Class / Patent application number | Description | Number of patent applications / Date published |
044620000 | COAL TREATING PROCESS OR PRODUCT THEREOF | 72 |
20080256852 | Integrated process and apparatus for producing coal-based jet fuel, diesel fuel, and distillate fuels - Coal-based jet fuel, diesel fuel and/or distillate fuels are produced by selectively introducing a coal-based product directly into the petroleum refinery process flow to thereby create an integrated refinery process for producing the distillate fuels. | 10-23-2008 |
20090038213 | PRE-BURNING, DRY PROCESS METHODOLOGY AND SYSTEMS FOR ENHANCING METALLURGICAL SOLID FUEL PROPERTIES - Measurements are taken of moisture, BTU/lb (British Thermal Units per pound), ash, forms of sulfur, volatile material, grindability, and absorption properties of any of a wide variety of mine-run solid fuels. Using that information, a dry electromagnetic process technology has been developed that can be controlled and monitored to selectively alter and enhance metallurgical solid fuel properties. Specific changes include altering the mechanical structure and chemical composition of solid fuels such as coal, coal coke or petroleum coke, increasing the BTU/lb to optimum levels, decreasing all forms of sulfur, and decreasing ash, while maintaining the BTU/lb of the fuels. A new family of solid fuel designer coals not found in nature can be produced via these methods and apparatus. | 02-12-2009 |
20090193712 | PRETREATMENT OF COAL - The present invention is directed toward a method of solubilizing coal. The method includes providing coal and providing an oxoacid ester of phosphorus or a mixture of an oxoacid of phosphorus and an alcohol. A blend of the coal, the oxoacid ester of phosphorus or the mixture of the oxoacid of phosphorus and alcohol is formed. The blend is then treated under conditions effective to solubilize the coal. | 08-06-2009 |
20090277080 | COAL WITH IMPROVED COMBUSTION PROPERTIES - A method for improving the combustion properties of a coalcomprises treating said coal with a metal porphyrin. The invention also provides a coal having a metal porphyrin deposited thereon, and a method of producing heat, comprising combusting the coal. | 11-12-2009 |
20100037515 | FUEL SYSTEM AND PROCESS FOR ITS PRODUCTION - The present invention relates to a fuel system and to a process for the production of such a fuel system. The fuel system according to the present invention shows a content of fossil carbon which is clearly reduced compared to that of fossil fuels while the fuel-technological properties are the same. Thus the emission of the carbon dioxide based on fossil carbon is notably reduced during the use of the fuel system according to the invention. In one embodiment of the process according to the invention, the fuel system according to the invention is provided consisting of at least two different fossil regular fuels and at least one biogenic carbon donor, with biomasses serving as a biogenic carbon donor. | 02-18-2010 |
20110131874 | METHOD FOR IMPROVING THE EFFICIENCY OF HEAT TRANSFER IN A COAL FIRED FURNACE - An additive having as components, at least three metal oxides selected from iron, manganese, cobalt, and copper oxide, may be added to coal to reduce the brightness of ash produced therewith. Further, the additive serves to increase the heat transfer efficiency of furnaces. | 06-09-2011 |
20110138686 | METHOD FOR REFINING COAL ASH BY SEPARATING CARBONOUS PRODUCT AND REGENERATING SILICEOUS ASH PRODUCTS AND USE OF A CARBONOUS PRODUCT PRODUCED BY THE METHOD - Method for industrial processing of charcoal ash ( | 06-16-2011 |
20110173878 | APPARATUS AND METHOD FOR RECYCLING COAL ASH - The present invention relates to an apparatus and method for recycling coal ash, and more particularly to an apparatus and method for recycling coal ash, in which the apparatus for recycling coal ash comprises an unburned coal ash recovery unit and a lightweight aggregate manufacturing unit and is provided in an existing thermoelectric power plant and in which coal ash which is generated in the thermoelectric power plant is completely recycled for specific purposes using the coal ash recycling apparatus. According to the invention, the surrounding environment can be prevented from being contaminated during the transportation of waste to a recycling factory and transportation expenses can be reduced. Moreover, coal ash is completely recycled for specific uses, such that unburned carbon contained in the coal ash can be used. Also, coal ash can be recycled even as concrete admixtures having strict standards. In addition, the present invention can prevent environmental contamination caused by the landfilling of waste and recycle waste, thereby reducing the loss of land and the waste of resources. | 07-21-2011 |
20110314729 | Charcoal for Hookah Tobacco - One embodiment of the present disclosure is a piece of charcoal (also referred to as a charcoal body) that has been formed to create an air passageway on a lower surface. The air passageway may be formed as a notch defining an angle therein. In another embodiment, a plurality of feet are formed on the lower surface of the piece of charcoal. | 12-29-2011 |
20110314730 | ADVANCED COAL UPGRADING PROCESS FOR A POWER STATION - A coal or carbonaceous material upgrading process for power station use, the process comprising a number of steps. First comminuting the coal or carbonaceous to a comminuted material. Second pre-treating the comminuted coal with a pulsing single frequency microwave and vacuum to reduce its water and oxygen content; the pre-treating stage being carried out at a temperature of up to 180 C Third, treating the pre-treated comminuted material with a pulsing single frequency microwave energy under vacuum to optimize the volatile organic materials; the treatment stage being carried out at a temperature of up to 350 C. Next pyrolyzing the treated coal with a pulsing single frequency microwave and vacuum to produce a hot gas and a solid carbon residue; the pyrolyzing stage is carried out at a temperature of up to 720 C. The solid carbon residue can then be separated from the hot gas, the volatile organic materials condensed to produce a liquid hydrocarbon product and a gas product; and the solid material and the gas product fed to a power station to produce electricity therefrom. The microwave energy applied at each of the stages has a single frequency of 100 megahertz to 300 gigahertz, has circular polarisation, and is pulsed at a frequency of 2 to 50 kilohertz. The pre-treatment step, the treatment step, and the pyrolysis step can be done under vacuum. | 12-29-2011 |
20120030999 | PREPARATION AND USE METHOD OF COAL CARBON EFFICIENT ENERGY-SAVING DESULPHURIZATION ADDITIVE - A method of preparation for high-efficiency and energy-saving desulfuration additive of coal, which is characterized in that its components comprise the following materials by weight percentage: 30-40% ammonium perchlorate, 5-12% manganese carbonate, 5-12% zinc oxide, 10-23% sodium permanganate, 3-9% manganese dioxide, and 20-35% calcium phosphate primary. The above materials are mixed and broken up, and screened with sieve of 250-300 meshes. A method of application for high-efficiency and energy-saving desulfuration additive of coal in that the additive is fully mixed with coal for firing in furnace, wherein the weight ratio between the additive and the coal is between 3 to 1000 and 8 to 1000. While the coal is fired, the additive not only supports combustion to reduce coal consumption but more effectively decreases harmful gases in the furnace by firing, removing and defusing impurities and harmful substances in the coal so that no harmful substances are formed and discharged. | 02-09-2012 |
20120233915 | Solubilization of Coal and Bioconversion of Coal to Methane and Other Useful Products - Coal is contacted, or treated, with at least one aromatic alcohol and/or cycloaliphatic alcohol to solubilize at least a portion of the treated coal. The treated coal is optionally bioconverted to produce one or more hydrocarbons, such as methane. | 09-20-2012 |
20120247006 | CHEMICAL ADDITIVES TO INHIBIT THE AIR OXIDATION AND SPONTANEOUS COMBUSTION OF COAL - The invention is directed towards methods and compositions for treating piles of low-rank coal to inhibit its spontaneous combustion. The method involves applying to the low-rank coal a composition containing VAE and crude glycerin. The composition prevents water from evaporating out of the low-rank coal. This prevents the formation within the low-rank coal of hollow openings which are a huge factor in causing its spontaneous combustion. The composition has better performance than its ingredients do alone. In fact it is so effective that certain cumbersome low-rank coal-handling methods, such as FIFO recordkeeping and inventorying, not using pinch points, or only using elbow-free equipment can be disregarded when the composition is used. | 10-04-2012 |
20120304537 | COAL DECOMPOSITION METHOD AND EQUIPMENT IN CYCLE HEATING GAS STYLE - The invention discloses a coal decomposition method and equipment in cycle heating gas style. The coal decomposition equipment can avoid introducing impurity, ensure a pure decomposed gas and keep continuous heating without extrinsic heat source, which includes an airtight kiln body with coal inlet and coal outlet; a facility for impelling and decomposing coal set in the kiln body; a coal decomposed gas collecting pipe set in one end of the airtight kiln body, and a high temperature gas input pipe set in the other end of the airtight kiln body; wherein the coal decomposed gas collecting pipe is connected with a post-processing facility and communicates with the high temperature gas input pipe through a circle pipe, and the circle pipe and/or the high temperature gas input pipe comprises a heating device. | 12-06-2012 |
20130312321 | AUTOMATED SYSTEM FOR SORTING AND BLENDING COAL - A method and apparatus for automatically sorting and blending coal and other fuel stocks through a computer-controlled process in order to achieve a specified blend of materials. By sorting fuel stocks with different characteristics into different stacking points, an operator can then automatically combine and uniformly blend these sorted fuel stocks to create a variety of blended materials with different properties tailored to the specific needs of the operator or end user. The computer-controlled nature of the process allows for precise blending in an automated and more efficient and reproducible fashion. | 11-28-2013 |
20150033619 | Inhibition of Spontaneous Combustion in Low-Rank Coals - A method for treating coal to reduce spontaneous combustion by reducing an exothermic heat of adsorption after the coal has begun to dry and when the coal is subsequently exposed to a liquid water is described. A source of a fluid pressure of a diluted hydrocarbon mixture is provided. A hydrocarbon in the mixture is a hydrocarbon emulsion of mineral when the coal is subsequently exposed to a liquid water oil, fuel oil, asphalt, or coal tar emulsions. A volume of the diluted hydrocarbon mixture is applied to a stream of freshly-mined and undried coal to provide a water-proofing of the coal to prevent water uptake after exposure to precipitation or flooding during transport and storage of the coal. The treated coal is loaded into a bulk pile. A temperature change trend in the bulk pile is reversed wherein a temperature of the bulk pile trends towards an ambient temperature rather than trending to a temperature higher than the ambient temperature. | 02-05-2015 |
044621000 | Removal of undesirable | 56 |
20090172998 | System and method for refining carbonaceous material - A system for refining carbonaceous material including a carbonaceous material feedstock unit including a first vibratory screen unit for sizing the carbonaceous material; a digestion unit including a digestion unit in communication with the carbonaceous material feedstock unit; and an acid feedstock unit in communication with the digestion unit for providing an acid mixture solution to the digestion unit including a source of H | 07-09-2009 |
20090265978 | ROTARY REGENERATIVE CHEMICAL LOOPING COMBUSTION - Chemical looping combustion of coal utilizing a rotating regenerative assembly to expose coal particles to alternating conditions of oxidation and regeneration. | 10-29-2009 |
20100050504 | NORMAL AND ISO PARAFINES WITH LOW CONTENT OF AROMATICS, SULPHUR AND NITROGEN AS COLLECTOR FOR FROTH FLOTATION - The present invention relates to a flotation agent comprising a collector hydrocarbon composition comprising more than 80 wt % of iso and normal paraffins, less than 1 wt % aromatics, less than 5 ppm sulphur and less than 1 ppm nitrogen, and having a density of between 0.65 and 0.8 g/cm3 at 15° C., and at least one frothing agent, and to a process for the froth flotation of non-metal and metal ores and sludges. | 03-04-2010 |
20100281769 | HOT SOLIDS PROCESS SELECTIVELY OPERABLE BASED ON THE TYPE OF APPLICATION THAT IS INVOLVED - A hot solids process selectively operable for purposes of generating a predetermined output based on the nature of the specific application for which the predetermined output is being produced, and wherein such specific application is designed to be pre-selected from a group of specific applications that includes a new steam generator application, a retrofit steam generator application, a CO2 capture ready Hot Solids Combustion application, a CO2 capture ready hot solids gasification application, a CO2 capture hot solids combustion application, a CO2 capture hot solids gasification application, a partial CO2 capture hot solids combustion application, and a partial CO2 capture hot solids gasification application. | 11-11-2010 |
20100307054 | Development of a Techno-Economic Process for Organo Refining of Coal - An improved organo-refining process to produce low ash clean coal from high ash coal, comprising: mixing coal, solvent and a co-solvent to produce a slurry; feeding the slurry to a reactor by pumping; extracting a coal-solvent mixture from the reactor; feeding the extracted mixture to a flasher unit; recovering about 30% of the solvent from the flashing unit; feeding the remaining heavy material to an evaporator; extracting about 60% of solvent from the evaporator; discharging the residue from the evaporator to a precipitator having water which produces a coal slurry; filtering the slurry in a rotary drum; collecting the super clean coal as a residue and feeding the filtrate into a distillation unit; and separating the water and the organic material in the filtrate to recover at least 7 to 8% of the remaining solvent. | 12-09-2010 |
20110030270 | Methods for removing impurities from coal including neutralization of a leaching solution - A method for removing at least one impurity from coal is provided. The method comprises providing coal having a plurality of impurities and contacting the coal with a first leaching solution. The first leaching solution reacts with at least one of the impurities to produce one or more first products soluble in the first leaching solution. The method further comprises adding a neutralizing composition to the first leaching solution. The neutralizing composition reacts with the first leaching solution to form a precipitate. The method further comprises separating at least a portion of the first leaching solution from the coal and the precipitate and contacting the coal and the precipitate with a second leaching solution. The second leaching solution reacts with at least one of the impurities and the precipitate to form one or more second products and one or more third products, respectively, the second products and the third products being soluble in the second leaching solution. The method further comprises separating at least a portion of the second leaching solution from the coal. | 02-10-2011 |
20110179702 | Method of Recovery of Organic Solvents Required in Refining of Coal - A method of recovery of organic solvents required in the refining of coal comprising: mixing solvent, co-solvent and coal to form a slurry; thermally treating the slurry under pressure and high temperature to form a coal-extract; passing the coal-extract through a membrane under high pressure in an ultra filtration unit to achieve recovery of a major part of the solvent; contacting the remaining thick clarified liquid from the membrane with water to obtain precipitated coal in a slurry with a mixture of water and organic solvent; feeding the slurry to a filter to get clean coal of very low ash content as a residue and a mixture of water and organic solvent as a filtrate; distilling the filtrate to separate the balance of the organic solvent from the water. The application of a membrane for filtration minimizes the heat requirement to establish economy. | 07-28-2011 |
20110179703 | BIOMASS TO BIOCHAR CONVERSION IN SUBCRITICAL WATER - The present invention relates to a method for conversion of biomass to biochar in subcritical water at 230-350° C. and 500-3000 psi. Under subcritical water conditions, biomass readily converts into biochar, biocrude, and some gases. In this invention, yield of biochar is significantly improved by recycling of biocrude. The process can produce hydrophobic biochar that has at least 70 wt % (dry basis) carbon as opposed to ˜25 wt % carbon in hydrophilic biomass, and has a heating value of about 29 MJ/kg (HHV-dry basis) which is comparable to good quality coals. More than 90% energy of biomass is retained in the biochar. The invention provides an effective means to convert biomass into a high energy density fuel for use in a variety of applications. | 07-28-2011 |
20110192079 | METHOD FOR PRODUCING PULVERIZED COAL - Method for producing pulverized coal, the method comprising the steps of heating a drying gas, preferably an inert gas, in a hot gas generator ( | 08-11-2011 |
20110192080 | METHOD FOR PRODUCING PULVERIZED COAL - Method for producing pulverized coal, the method comprising the steps of heating a drying gas, preferably an inert gas, in a hot gas generator ( | 08-11-2011 |
20110225879 | SEPARATION SYSTEM AND METHOD - A separation system and method for separating one or more solid fossil fuels from a contaminated source in a liquid medium, the system including primary separation means and secondary separation means, the primary and secondary separation means being arranged to operate with liquid media of differing specific gravities. | 09-22-2011 |
20110252700 | HEAT INTEGRATED CHEMICAL COAL TREATING - Systems and methods are provided that include a heat integrated coal treating system having a two-stage coal treating process. In one embodiment, the two-stage treating process may include an HF reactor and an HNO | 10-20-2011 |
20110252701 | SYSTEMS AND METHODS FOR RECOVERING FINE PARTICLES FROM FLUID SUSPENSIONS FOR COMBUSTION - The present invention provides compositions, systems and methods for using coal from coal processing sources to remove coal fines from a mixture and form a coal-on-coal composite particle. | 10-20-2011 |
20120117864 | METHOD FOR REPROCESSING SOLID COMBUSTION PRODUCTS OF COAL - A method for reprocessing solid combustion products includes the combustion products first being mixed with a base before the mixture obtained is sintered, wherein the sintered mixture can be washed out with an acid solution after sintering. | 05-17-2012 |
20130133247 | Method and Process for Providing a Controlled Batch of Micrometer-Sized or Nanometer-Sized Coal Material - A printing ink includes a micrometer-sized or nanometer-sized coal material. The micrometer-sized or nanometer-sized coal material is produced using a method of providing a controlled batch of micrometer-sized or nanometer-sized coal material. This method includes the steps of: (a) specifying at least one desired physical and/or chemical parameter of the controlled batch of coal material; (b) specifying the desired range of the physical and/or chemical parameter in the controlled batch of coal material; (c) obtaining a feedstock batch of coal material; and (d) processing a feedstock batch of coal material to obtain the controlled batch of coal material having the at least one specified physical and/or chemical parameter in the specified range thereof. In a further step, the controlled batch of coal material can be activated. | 05-30-2013 |
20140047764 | COAL ENHANCEMENT PROCESS - The present process produces a clean burning coal from low grade coal and has a higher heating value per unit mass, as compared to the feed stock coal. The clean coal may be used in coal-fired power plants, industrial boilers, and homes since it produces fewer or none of the emissions commonly associated with coal burning devices. The process treats coal prior to its combustion and removes about 90 percent of the pollutants. These pollutants are removed within 6 to 18 minutes, many of which may be recycled into products such as roofing tar, chemical feed stocks, and light hydrocarbons that can be used as gaseous fuels. The final product is suitable for use in homes where coal is used for cooking and heating, and significantly improves the health of those who have previously been exposed to toxic fumes from burning uncleaned coal in their homes. The process is fueled by its own by-products, recycles heat, and reduces coal weight to save energy in transporting it to the user. | 02-20-2014 |
20140373435 | REFORMED COAL PRODUCTION EQUIPMENT, AND METHOD FOR CONTROLLING SAME - Reformed coal production equipment includes: a combustion furnace ( | 12-25-2014 |
20150075065 | METHOD FOR PROCESSING ORGANIC PHASE SUBSTANCE BY USINGHALOGEN-CONTAINING CHECICAL OR CHEMICALS AND/OR MIXTURECONTAINING OXYGEN-CONTAINING OXIDIZER OR OXIDIZERS ANDORGANIC CARBONYL ANALOGUE OR ANALOGUES, AND/ORMETHOD FOR EXTRACTING OR DEPOSITING HEAVY ELEMENT SPECIESAND/OR ORGANIC COMPONENTS OF ASPHALTENE AND/OR INORGANICSUBSTANCE FROM THE ORGANIC PHASE SUBSTANCE BY USINGHALOGEN-CONTAINING CHEMICAL OR CHEMICALS AND/OR MIXTURECONTAINING OXYGEN-CONTAINING OXIDIZER OR OXIDIZERS ANDORGANIC CARBONYL ANALOGUE OR ANALOGUES, ANDPLANT USING FOR THE METHOD, AND ORGANIC PHASE SUBSTANCE - The invention provides a processing method for upgrading an organic phase substance by removing heavy element species from the organic phase substance originating from a resource substance in mild environmental conditions, and further provides a method for collecting removed heavy element species and a method for collecting other substances. | 03-19-2015 |
044622000 | Sulfur | 8 |
20100005710 | Upgrading Carbonaceous Materials - Disclosed are methods for upgrading carbonaceous materials. Also disclosed are apparatuses for upgrading carbonaceous materials. Also disclosed are systems for upgrading carbonaceous materials. Also disclosed are upgraded carbonaceous materials. | 01-14-2010 |
20130167433 | SULFUR SOLVENT COMPOSITIONS, METHODS FOR REMOVING SULFUR DEPOSITS AND PROCESSES FOR MAKING SULFUR SOLVENT COMPOSITIONS - Sulfur solvent compositions are provided that have relatively low toxicity, low and not unpleasant odor, and a substantial capacity for rapidly dissolving elemental sulfur from deposits even at low temperatures and in the presence of water. The compositions comprise a reaction menstruum prepared using an amine component and a ketone component in the presence of alkanol. | 07-04-2013 |
044623000 | Using a transition metal-containing material | 2 |
20080250706 | COAL DESULPHURIZATION - A process for reducing the pyritic sulphur content of coal includes reacting the coal with a ferric ion solution to oxidise the pyritic sulphur to elemental sulphur, and separating the coal, which includes elemental sulphur from the ferric ion solution. The coal and the elemental sulphur are then reacted in an acidic solution with nitric acid to oxidize the elemental sulphur, forming sulphuric acid. The coal is separated from the acidic sulphuric acid containing solution to provide coal with a reduced pyritic sulphur content. | 10-16-2008 |
20100287827 | PROCESS FOR OBTAINING TREATED COAL AND SILICA FROM COAL CONTAINING FLY ASH - A process for treating mixtures of solid coal and fly ash containing metallic oxides, silicon dioxide and sulfur compounds in order to produce treated coal and substantially pure silicon dioxide comprising (1) reacting a mixture of the coal and fly ash with hydrogen fluoride in water to produce a liquid stream comprising silicon fluoride and metal fluorides and a solids stream comprising unreacted coal and sulfur compounds; (2) reacting the sulfur compounds with metallic nitrates dissolved in water to form an aqueous solution of nitrate, metallic and sulfur ions; (3) separating the aqueous solution of nitrate, sulfur and metallic ions from the solid coal; (4) washing the previously treated solid coal with water; (5) reacting the silicon fluorides and metal fluorides with metallic nitrates in an aqueous mixture to form solid silicon dioxide; and separating the solid silicon dioxide from the aqueous mixture. | 11-18-2010 |
044624000 | Using liquid aqueous material | 4 |
20100011658 | Method and apparatus for refining coal - A method of processing coal to remove sulfur and other contaminants by mixing coal in a solution of aqueous ammonia having a selected concentration range (preferred range of 3%-5%) of ammonia to water in a reaction vessel. The mixing causes the solution to be brought into contact with the surfaces and pores of the coal. The process is monitored to detect when the concentration of aqueous ammonia in the reaction vessel has fallen below the selected range, and aqueous ammonia with an ammonia concentration in or above the selected range is fed into the reaction vessel to return the solution to within the selected range. The cleaned coal may be rinsed and dried, or dried without rinsing to form an ammonia coating on the coal surfaces and pores. Several plant layouts to practice the method are described. | 01-21-2010 |
20110030271 | Method for removing impurities from coal in a reaction chamber - A method for removing at least one impurity from coal is described herein. The method includes providing coal comprising a plurality of impurities and contacting the coal with an acid solution in a reaction chamber. At least one of the impurities reacts with the acid solution to produce one or more first products soluble in the acid solution. The method further includes removing at least a portion of the acid solution including at least a portion of the first products from the reaction chamber and adding a nitrate composition to the reaction chamber to form a nitrate solution. At least one of the impurities, at least one of the first products, or combinations thereof react with the nitrate composition to produce one or more second products soluble in the nitrate solution. The method still further includes removing at least a portion of the nitrate solution including at least a portion of the second products from the reaction chamber. | 02-10-2011 |
20120110902 | SULPHUR-COMPOUND ADSORBING AGENT FOR SOLVENT EXTRACTION OF COAL, AND A SULPHUR-COMPOUND ADSORPTION METHOD AND COAL REFINING METHOD EMPLOYING THE SAME - A sulfur compound adsorbent for solvent extraction of coal and methods using the same to adsorb sulfur compounds and refine coal are provided. The adsorbent for solvent extraction of coal serves to remove sulfur compounds from an organic solvent containing a coal's combustible component resulting from solvent extraction of low-grade coal and is composed of any one or a mixture of two or more selected from among alkali earth metal oxide, alkali earth metal hydroxide, aluminum oxide and activated carbon. | 05-10-2012 |
20120279117 | Method and Apparatus for Refining Coal - A method of processing coal to remove contaminants by mixing coal in a solution of potassium permanganate in a selected concentration range, rinsing the coal, mixing the coal in a solution of ammonia hydroxide in a selected concentration range to cause the solution to be brought into contact with the surfaces and pores of the coal, discharging the processed coal from the second reaction vessel, monitoring the process to detect when the concentration of aqueous ammonia in the second reaction vessel has fallen below the selected range, and feeding aqueous ammonia solution with an ammonia concentration in or above the selected range to the second reaction vessel to return the solution to within the selected range. | 11-08-2012 |
044626000 | Water (e.g., drying, etc.) | 14 |
20100037516 | METHOD FOR THERMALLY UPGRADING CARBONACEOUS MATERIALS - Carbonaceous materials are thermally upgraded in a pressurized steam environment to remove moisture and other byproducts. A variety of water/solid separation devices may be employed in a process vessel to maximize moisture removal from the upgraded charge. Heating media inlet nozzles and process chamber vents are strategically positioned at the process vessel wall to minimize short circuiting of heating media to vessel outlet vents and to continuously separate hot water removed from the charge and condensed steam, such that the upgraded material removed from the process vessel is not discharged with accompanying free moisture. After upgrading, the charge may be rehydrated to improve its stability during shipping and storage. | 02-18-2010 |
20100077658 | METHOD AND APPARATUS FOR PRODUCING SOLID FUEL - (Problems) Providing a method and an apparatus for producing a solid fuel, capable of suppressing increase in dust coal concentration in circulating oil. | 04-01-2010 |
20100088952 | HIGH PRESSURE EXTRACTION - A reactor system comprising two or more subterranean reactors for high pressure treatment of materials. The reactors each comprise an inlet tube, a reaction region and an outlet tube and are deep enough for material in the inlet and outlet tubes to produce significant hydrostatic pressure. The reactors are adapted to exchange heat which may occur through a shared heat transferring wall or a heat exchanger including circulating liquid. The invention also extends to a method of simultaneously running two processes in the reactor system. The preferred processes are hydrothermal dewatering of coal, especially brown coal, and coal liquefaction wherein exothermic heat product of one process contributes to the heating requirements of the other process. The invention also extends to a method of hydrothermal dewatering of coal when conducted in a subterranean reactor in conditions of decreasing pressure. | 04-15-2010 |
20100287828 | BENEFICIATION OF COAL - This invention concerns the beneficiation of coal, in particular a process for improving mined coal. The invention is a commercial scale process for improving coal, comprising the steps of: Comminuting coal to a particle size at which individual Macerals are available. Extracting reactive Macerals from the comminuted coal as froth from the top of a deep-column flotation cell. And, dewatering the extracted Macerals. In another aspect the invention concerns a commercial scale processing plant for mined coal. | 11-18-2010 |
20110005126 | APPARATUS AND PROCESS FOR PRODUCING SOLID FUEL - A solid fuel producing apparatus that even when supply of raw coal (RC) and mixed oil (MO) and supply of slurry to subsequent steps are stopped because of troubling at evaporation step or later, etc., would prevent cloggings of heat exchanger and raw coal supply means. The solid fuel producing apparatus includes a mixing tank ( | 01-13-2011 |
20110041393 | INDIRECT HEAT-DRYING APPARATUS, INDIRECT HEAT-DRYING METHOD OF DRYING SUBSTANCE TO BE DRIED, AND METHOD AND APPARATUS FOR PRODUCING SOLID FUEL - The present invention provides an indirect heat-drying apparatus that is resistant to adhesion of the substance to be dried on heating pipes and gives a product having a desired and stabilized liquid content. | 02-24-2011 |
20110094150 | COAL ENHANCEMENT PROCESS - The present process produces a clean burning coal from low grade coal and has a higher heating value per unit mass, as compared to the feed stock coal. The clean coal may be used in coal-fired power plants, industrial boilers, and homes since it produces fewer or none of the emissions commonly associated with coal burning devices. The process treats coal prior to its combustion and removes about 90 percent of the pollutants. These pollutants are removed within 6 to 18 minutes, many of which may be recycled into products such as roofing tar, chemical feed stocks, and light hydrocarbons that can be used as gaseous fuels. The final product is suitable for use in homes where coal is used for cooking and heating, and significantly improves the health of those who have previously been exposed to toxic fumes from burning uncleaned coal in their homes. The process is fueled by its own by-products, recycles heat, and reduces coal weight to save energy in transporting it to the user. | 04-28-2011 |
20110138687 | Beneficiation Process to Produce Low Ash Clean Coal from High Ash Coals - An improved beneficiation process to produce low ash clean coal from high ash coals, comprising: preparing a coal slurry from fine coal and water and discharging it to a first reactor; preparing an alkali solution of NaOH and water and discharging it to a first reactor; carrying-out a leaching reaction between the coal and the alkali solution inside the first reactor; transferring the reaction mixture to a second reactor for filtration and washing to produce a filter cake; preparing a diluted acid solution in a second tank and delivering it to a second reactor; preparing a diluted alkali solution in a third tank and delivering it to a second reactor; feeding a coal slurry prepared from the filter cake into the second reactor for washing and transferring to a second filtration unit; transferring the product after filtration to a third reactor; carrying-out different leaching reaction sequences in the first, second, and third reactors; and transferring to a fifth tank the treated coal filter cake for drying. | 06-16-2011 |
20120272569 | Process for Drying Coal - A process for drying coal is provided in which coal is passed into a fluidized bed reactor and heated to a predetermined temperature. The dried coal is then fed to a cooler where the temperature of the product is reduced to approximately 200 degrees Fahrenheit and water is added to further passivate the coal. | 11-01-2012 |
20130133248 | APPARATUS FOR UPGRADING COAL AND METHOD OF USING SAME - A method for using an apparatus for upgrading coal comprising a baffle tower, inlet and exhaust plenums, and one or more cooling augers. The baffle tower comprises a plurality of alternating rows of inverted v-shaped inlet and outlet baffles. The inlet and outlet plenums are affixed to side walls of the baffle tower. Process gas enters the baffle tower from the inlet plenum via baffle holes in the side wall and dries the coal in the baffle tower. Process exhaust gas exits the baffle tower into the exhaust plenum via baffle holes in a different side wall of the baffle tower. Coal that outers the baffle tower descends by gravity downward through the baffle tower and enters a cooling auger, where the dried coal from the baffle tower is mixed with non-dried coal. | 05-30-2013 |
20130333280 | METHOD FOR GAS TREATMENT OF COAL - In a method for gas treatment of coal wherein coal ( | 12-19-2013 |
20140137466 | Methods and Compositions for Drying Coal - The present disclosure provides methods, compositions and systems for drying coal fines. | 05-22-2014 |
20140144072 | COAL DRYING METHOD AND SYSTEM - The present invention provides methods and systems for reducing moisture in coal, particularly coal fines and other coal streams comprising small diameter particles, using a granular drying material. The invention also relates to novel coal products and intermediates useful in connection with the process. The method and system reduced moisture by contacting the coal with the granular drying material. The granular drying material is selected to be readily separated from the coal fines using a size separation technique such as a sieve screen. The granular drying material is the regenerated, preferably using a process involving heat exchange and cross-flow air. The granular drying material is preferably capable of regeneration and recycling in a continuous process with minimal attrition. | 05-29-2014 |
20140250777 | COAL ENHANCEMENT PROCESS - The present process produces a clean burning coal from low grade coal and has a higher heating value per unit mass, as compared to the feed stock coal. The clean coal may be used in coal-fired power plants, industrial boilers, and homes since it produces fewer or none of the emissions commonly associated with coal burning devices. The process treats coal prior to its combustion and removes about 90 percent of the pollutants. These pollutants are removed within 6 to 18 minutes, many of which may be recycled into products such as roofing tar, chemical feed stocks, and light hydrocarbons that can be used as gaseous fuels. The final product is suitable for use in homes where coal is used for cooking and heating, and significantly improves the health of those who have previously been exposed to toxic fumes from burning uncleaned coal in their homes. The process is fueled by its own by-products, recycles heat, and reduces coal weight to save energy in transporting it to the user. | 09-11-2014 |
044627000 | Ash or ash-former | 16 |
20110078948 | ASH REMOVAL FROM COAL: PROCESS TO AVOID LARGE QUANTITIES OF HYDROGEN FLUORIDE ON-SITE - A method and system for treating coal with hydrogen fluoride to remove fly ash and thereafter regenerating substantially all of the hydrogen fluoride used during the process (thereby significantly reducing the amount of HF on site). An exemplary method includes the steps of charging at least one reaction vessel with coal containing fly ash; feeding hydrogen fluoride into the reaction vessel to form a first reaction mixture of soluble reaction products, insoluble fluoride compounds and initially clean coal; separating out the first soluble and insoluble reaction products; feeding nitric acid into the same reaction vessel to react with any remaining fly ash components and separating out those second reaction products; and regenerating substantially all of the hydrogen fluoride used in the first fluoride reaction. | 04-07-2011 |
20140115957 | GRAVITATIONAL SETTLING TANK AND METHOD FOR PRODUCING ASH-FREE COAL - A gravitational settling tank including a pressure vessel which precipitates solid content contained in slurry in which coal and solvent are blended, and separates the solid-content concentrated liquid from the supernatant liquid, and a supply pipe which supplies the pressure vessel with the slurry. A main body part and a nozzle part which is connected on the downstream side of the main body part and extends horizontally are provided in the supply pipe. A plurality of holes are provided in the nozzle part. By virtue of this, agitation of the solid-content concentrated liquid which has settled in the bottom is inhibited. | 05-01-2014 |
20140245659 | System and a Process to Produce Low Ash Clean Coal from High Ash Coal - An industrial process for treating coal in a system to lower ash content, the system comprising first and second water storage tanks, a diesel storage tank, a thermic fluid heater, a thermic fluid storage tank, a thermic fluid pump, a heat exchanger, a thermic fluid expansion tank, a N2 gas cylinder, a reactor, a water pump, and a reflux condenser, the process comprising (i) forming a slurry of coal fines in a N-Methyl-2-pyrrolidone (NMP) with Ethylenediamine (EDA) solution, (ii) maintaining said slurry in the reactor at a temperature of 150° C. to 220° C. and at a pressure of 1 to 4 gauge (kg/cm) for about 1 to 3 hours, (iii) separating a sample of the slurry by coarse filtration in a filter cloth to obtain a filtrate/extract and a residue, (iv) precipitating the coal in water by adding concentrated extract, and (v) separating the coal by filtration. | 09-04-2014 |
20140298715 | GRAVITATIONAL SETTLING TANK AND ASH-FREE COAL PRODUCTION METHOD USING THE SAME - Provided is a gravitational settling tank capable of detecting a boundary surface of a solids-enriched fluid. A pressure vessel | 10-09-2014 |
20140305034 | ASH-FREE COAL PRODUCTION METHOD - Provided is an ash-free coal production method that can produce an ash-free coal efficiently with a higher solvent recovery rate. The ash-free coal production method includes an extraction step of mixing coal with a solvent to give a slurry and heating the slurry to extract a solvent-soluble coal component; a separation step of separating a solution containing the coal component from the slurry containing the extracted coal component; and an ash-free coal obtaining step of separating and recovering the solvent from the separated solution to give an ash-free coal. The ash-free coal obtaining step includes a pressure-reducing substep of reducing a pressure to a level lower than the solvent vapor pressure to evaporatively separate the solvent from the solution to thereby give a solid ash-free coal; and a heating substep of heating the solid ash-free coal to evaporatively separate a residual solvent from the ash-free coal. | 10-16-2014 |
20140311024 | ASH-FREE COAL PRODUCTION METHOD - Provided is a meted that controls and uniformizes fluidity of ash-free coal. The method includes the steps of obtaining an ash-free coal by removing a solvent from a solution containing a coal component dissolved therein (ash-free coal obtaining step (solvent recovering unit | 10-23-2014 |
20140325901 | ASH-FREE COAL PRODUCTION METHOD - Provided is an ash-free coal production method without the need to once re-liquefy and form an ash-free coal. The ash-free coal production method includes an extraction step of mixing coal with a solvent to prepare a slurry and heating the slurry to extract a solvent-soluble coal component; a separation step of separating a solution containing the solvent-soluble coal component from the slurry obtained from the extraction step; an ash-free coal obtaining step of evaporatively separating the solvent from the solution separated in the separation step to obtain an ash-free coal. The ash-free coal obtaining step in the production method is performed so that the solvent is evaporatively separated from the solution to give a liquid ash-free coal, and the liquid ash-free coal is brought into contact with a solidifier (e.g., water) to solidify into a predetermined shape. | 11-06-2014 |
20140366432 | Process Flow Sheet for Pre-Treatment of High Ash Coal to Produce Clean Coal - A process for treating coal to obtain lower ash content coal including: (i) pretreating high ash coal in a pretreatment unit with ultrasonic waves or microwaves, (ii) forming a slurry of coal fines in a solvent solution including N-Methyl-2-pyrrolidone (NMP) and one of Ethylenediamine (EDA) or Monoethanolamine (MEA), (iii) maintaining said slurry in a refluxed condition at a temperature of about 170-190° C. for a period of about 15 minutes to 2 hours; (iv) separating the refluxed slurry into two parts consisting of extract and residue by coarse filtration, (v) recovering up to 85% of the solvent solution by evaporation of the extract to form a concentrated extract, (v) precipitating the coal by adding water to the concentrated extract, (vi) separating the coal from the water-extract solution by filtration, and (vii) recovering the rest of the solvent by distillation of the water-extract solution. | 12-18-2014 |
20150007494 | Process for Production of Low Ash Clean Coal from High Ash Coal with Total Solvent Recovery - A process to produce low ash clean coal from high ash coal with substantially complete solvent recovery, the process including: forming a slurry of coal fines in a N-Methyl-2-pyrrolidone (NMP) and Ethylenediamine (EDA) solution; maintaining said slurry in a reactor at a temperature range of 100° C. to 240° C. and a pressure range of 1 to 4 gauge (kg/cm2) for a period of about 15 minutes to 4 hours; separating the produced sample withdrawn from the reactor, one part being a filtrate and the other a reject; feeding the filtrate into an evaporator to recover 80-85% solvent; precipitating the concentrated filtrate material in an anti-solvent tank to separate coal from solvent; separating the coal by filtration, said separated coal having a reduced ash content; feeding the anti-solvent and solvent mixture into a distillation column to separate remaining solvent from the anti-solvent for reuse in the process. | 01-08-2015 |
20150013215 | SOLVENT SEPARATION METHOD - A method for separating solvent-containing water, which is generated in the process for producing an ashless coal, into a solvent and water readily without using any adsorbent or the like (a solvent separation method). The solvent separation method comprises: a solvent-containing water supply step of supplying the solvent-containing water into a pressure vessel for solvent separation purposes; and a temperature retention step of retaining the temperature of the solvent-containing water that has been supplied into the pressure vessel for solvent separation purposes at a predetermined temperature (e.g., 100 to 180 DEG C. inclusive). In the pressure vessel for solvent separation purposes, water in the liquid form moves downward and the solvent moves upward due to the difference between the density of water and the density of the solvent at the predetermined temperature. In this manner, the solvent-containing water can be separated into the solvent and water. | 01-15-2015 |
20150376528 | METHOD FOR PRODUCING RESIDUE COAL - In a method for producing residue coal according to the present invention, a solvent is separated by evaporation from a solid material concentrate, which has been separated in a gravity settling vessel ( | 12-31-2015 |
20160002551 | ASHLESS-COAL PRODUCTION DEVICE, AND ASHLESS-COAL PRODUCTION METHOD - A production apparatus of an ashless coal includes a preheater, an extraction tank, a feed pipe, a solid-liquid separator and a solvent separator. The preheater heats a solvent. The extraction tank extracts a coal component soluble in the solvent from a slurry including a mixture of a coal and the solvent heated by the preheater. The coal feeding unit feeds the coal to the feed pipe by pressuring a feed part to the feed pipe such that the solvent does not flow back. The solid-liquid separator separates a solution part containing the coal component from the slurry. The solvent separator evaporates and separates the solvent from the solution part to obtain an ashless coal. | 01-07-2016 |
20160010011 | METHOD FOR PRODUCING ASHLESS COAL | 01-14-2016 |
20160060558 | METHOD FOR PRODUCING ASH-FREE COAL - A method for producing an ashless coal which includes a slurry preparation step, an extraction step, a separation step, an ashless coal acquirement step, and a by-product acquirement step. The separation step is conducted under the state of being pressurized to a pressure equal to or higher than a vapor pressure of the solvent. In the by-product acquirement step, the solvent is evaporated and separated from the solid content-concentrated slurry by spraying the solid content-concentrated slurry into a flash tank in which a pressure is set to lower than a saturation pressure of the solid content-concentrated slurry from a spray nozzle while maintaining a pressure of the solid content-concentrated slurry in a nozzle orifice of the spray nozzle at a level equal to or higher than the vapor pressure of the solvent. | 03-03-2016 |
20160115411 | METHOD OF SEPARATING SOLIDS USING BIO-OILS - A process for separating a solid having two or more components, at least one of which is lyophobic and at least one of which is lyophilic. The process comprises, in a single step, comminuting a mixture of the solid in a first liquid to which one of the components is lyophilic and to which the other component is lyophobic and in a second liquid which is immiscible with the first liquid and which will wet the lyophobic component to form agglomerates or floes of the lyophobic component and the second liquid in a mill having positive transport capability such that the mill causes the mixture to be transported therethrough. The second liquid comprises a bio-oil, bio-diesel or combination thereof. The agglomerates are then separated from the mixture. This process may be used for beneficiating a coal containing ash. | 04-28-2016 |
20160137941 | METHODS AND SYSTEMS FOR TREATING CARBONACEOUS MATERIALS - A method for treating a carbonaceous material including heating a carbonaceous material to move at least a portion of tar through the carbonaceous material toward a surface of the carbonaceous material to form a tar coating on the surface. The method also includes cooling the carbonaceous material and the tar coating on the surface to form a tar-coated carbonaceous material, wherein at least the portion of tar that forms the tar coating on the surface remains in contact with the carbonaceous material while the carbonaceous material is heated to form the tar coating and while the carbonaceous material and the tar coating are cooled to form the tar-coated carbonaceous material. | 05-19-2016 |