| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423243010 | Utilizing aqueous reactant to remove or modify sulfur or sulfur containing component | 51 |
| 20080199378 | Process for disposing waste gas comprising sulfur oxides and apparatus thereof - A method for enlarging the particle diameters of sulfuric acid mists in waste gas and collecting the sulfuric acid mists in high efficiency is provided. A process for disposing waste gas containing sulfur oxides that introduces the waste gas in dry type electrostatic precipitator to remove dusts and then introduces the waste gas in a wet desulfurization apparatus to carry out desulfurization, wherein outside air with a flow rate at which the waste gas introduced in the wet desulfurization apparatus is the dew point of acid is taken in from an introducing tube to mix the outside air in the waste gas. | 08-21-2008 |
| 20080199379 | Method and Device For Removing Sulphur Dioxide From a Dry Gas Stream - The invention relates to a method for removing sulfur dioxide from a dry gas stream which comprises following steps:
| 08-21-2008 |
| 20080241036 | METHOD AND DEVICE FOR SEPARATION OF SULPHUR DIOXIDE FROM A GAS - A system for separating sulfur dioxide from a gas using an aqueous absorption liquid. The system includes a housing, an apertured plate, an outlet box, a distribution mechanism, a container, and a pump. The housing has an inlet and an outlet. The apertured plate is positioned between the inlet and the outlet and includes a lower side, an upper side, and apertures fluidly connecting the lower and upper sides. The outlet box includes a distribution mechanism that is arranged so that the absorption liquid draining from the outlet box contacts the gas from the inlet before the gas passes through the apertures in the apertured plate. The container contains the absorption liquid and is fluidly connected with the housing. The pump draws the absorption liquid from the container through the pump and through a conduit to the upper side of the apertured plate. | 10-02-2008 |
| 20080311016 | Process for disposing waste gas comprising sulfur oxides and apparatus thereof - A method for enlarging the particle diameters of sulfuric acid mists in waste gas and collecting the sulfuric acid mists in high efficiency is provided. A process for disposing waste gas containing sulfur oxides that introduces the waste gas in dry type electrostatic precipitator to remove dusts and then introduces the waste gas in a wet desulfurization apparatus to carry out desulfurization, wherein the waste gas temperature of a smoke channel at a more upstream side than the wet desulfurization apparatus is measured, the flow channel length is variable based on the measurement value of the waste gas temperature, the waste gas is flown to a flow channel means that is adjusted at a channel length capable of cooling the waste gas to the dew point of acid by heat release and then, the waste gas is introduced into the wet desulfurization apparatus. | 12-18-2008 |
| 20100111797 | ADDITIVE-CONTAINING ANIONIC CLAYS FOR REDUCING SOX EMISSIONS FROM AN FCC REGENERATOR AND PROCESS FOR MAKING THEM - A process is disclosed for the preparation of an additive-containing anionic clay generally comprising the steps of: a) milling a physical mixture of a divalent metal compound and a trivalent metal compound, b) calcining the milled physical mixture at a temperature in the range of about 200 to about 8000 C, and c) rehydrating the calcined mixture in aqueous suspension to form the additive-containing anionic clay, wherein an additive is optionally present in the physical mixture of step (a) and present in the aqueous suspension of step (c), and the additive is essentially free of vanadium. | 05-06-2010 |
| 20100266472 | Ship Flue Gas Scrubbing Equipment And Method - This invention involves a marine ship flue gas scrubbing equipment and scrubbing method. The equipment includes a shell with an upper scrubbing section and a water tank in the lower section. A smoke pipe leads in exhaust gas to an area between the scrubbing section and water tank. Scrubbing seawater is injected through an inlet above the scrubbing section, and a cooler is located along the pathway of the exhaust gas. The method of scrubbing includes leading-in exhaust gas, cooling the exhaust gas, injecting scrubbing seawater, performing scrubbing operation, and discharging clean gas. Embodiments of the invention provide a highly efficient scrubbing equipment and method suitable for high-temperature exhaust gas within a limited usable space. The methods and equipment are highly effective for emission reduction, has low energy consumption, small size, and long life performance. | 10-21-2010 |
| 20120189522 | Method of Desulfurizing Flue Gas, an Arrangement for Desulfurizing Flue Gas, and a Method of Modernizing a Desulfurization Arrangement - A method of desulfurizing flue gas in connection with oxy-combustion. A sulfur containing gas flow is introduced to a flue gas desulfurization arrangement having a spray tower at its top part and a reaction tank at its bottom part, in which the reaction tank contains liquid slurry having a surface level L. Sorbent-containing liquid slurry is sprayed to the sulfur containing gas flow. Sulfur-containing molecules are allowed to be absorbed into liquid slurry droplets. The liquid slurry droplets are allowed to enter the liquid slurry in the reaction tank. Oxygen containing gas is bubbled in the liquid slurry from a gas inlet header and nozzles in the reaction tank, in which the nozzles are arranged at a certain level in the reaction tank. Sulfur-containing particulates settle in the reaction tank. The sulfur-containing particulates are removed as a slurry from the reaction tank, and the bubbled gas that has left the liquid slurry is discharged separately from the flue gas from the flue gas desulfurization arrangement. | 07-26-2012 |
| 20120321539 | METHOD FOR PREVENTING RE-EMISSION OF MERCURY FROM A FLUE GAS DESULFURIZATION SYSTEM - An improvement in the method for preventing re-emissions of mercury from a wet flue gas desulfurization (FGD) system by addition of an additive to the FGD scrubber liquor which interacts in the system scrubber with mercury present in the flue gas to curtail the mercury re-emissions; the mercury re-emissions are reduced to substantially zero by use of an additive selected from one or more members of the group consisting of a dithiol, a dithiolane, and a thiol having a single thiol group and either an oxygen or a hydroxyl group. | 12-20-2012 |
| 20130202514 | METHOD AND DEVICE FOR TREATING CHLORINE BYPASS DUST AND DISCHARGE GAS - In accordance with the present invention, there is provide and device and method to facilitate the treatment of chlorine bypass dust while preventing increases in chemical cost and concentrations of heavy metals in clinker, and ensuring stability in quality of cement, and to treat chlorine bypass exhaust gas while avoiding coating troubles in a cement kiln etc., and preventing heat losses in a preheater etc., without degradation of clinker production amount. | 08-08-2013 |
| 20130280156 | CARBON NANOCOMPOSITE SORBENT AND METHODS OF USING THE SAME FOR SEPARATION OF ONE OR MORE MATERIALS FROM A GAS STREAM - The present invention relates to carbon nanocomposite sorbents. The present invention provides carbon nanocomposite sorbents, methods for making the same, and methods for separation of a pollutant from a gas that includes that pollutant. Various embodiments provide a method for reducing the mercury content of a mercury-containing gas. | 10-24-2013 |
| 20130336869 | SYSTEM & METHOD FOR PREVENTING SCALING IN A FLUE GAS DESULPHURIZATION SYSTEM - A system & Method for Preventing Scaling in a Flue Gas Desulphurization System is provided. The system includes an injector configured to direct a barrier fluid toward a surface that is otherwise susceptible to scaling when it comes in contact with super-saturated alkaline solutions such as slurry used to capture CO2 from a flue gas stream. | 12-19-2013 |
| 20140065046 | DESULPHURIZATION AND COOLING OF PROCESS GAS - The present invention relates to a method of cleaning a process gas containing sulphur dioxide the method including removing sulphur dioxide from the process gas by contacting the process gas with seawater to generate an at least partly cleaned process gas in a first gas cleaning device. In a second gas cleaning device, being arranged in direct fluid connection with the first gas cleaning device, the at least partly cleaned process gas having passed through the first gas cleaning device is cooled to condense water there from, thereby generating a process gas having a reduced content of water vapour. At least a part of the condensed water generated in the second gas cleaning device is passed to the first gas cleaning device. The present invention moreover relates to a gas cleaning system for cleaning of a process gas containing sulphur dioxide. | 03-06-2014 |
| 20140212351 | AIR POLLUTION CONTROL SYSTEM, AIR POLLUTION CONTROL METHOD, SPRAY DRYING DEVICE OF DEWATERING FILTRATION FLUID FROM DESULFURIZATION DISCHARGED WATER, AND METHOD THEREOF - To include a boiler | 07-31-2014 |
| 20160030883 | METHOD AND APPARATUS FOR TREATING ACIDIC TAIL GAS BY USING AMMONIA PROCESS FLUE GAS - A flue gas-treating method for treating acid tail gas by using an ammonia process, comprising the following steps of: 1) controlling the concentration of sulfur dioxide in an acid tail gas entering an absorber to be ≦30,000 mg/Nm | 02-04-2016 |
| 423243020 | And addition of gaseous reactant | 4 |
| 20090148373 | Process to remove hydrogen-sulfide from gas by reflux recycle from sour water stripper - A process for reducing hydrogen sulfide from a gas comprising contacting the gas with an aqueous scrubbing liquid recycled from a sour water stripper. The aqueous scrubbing liquid comprises ammonia. The contacting of the gas with the aqueous scrubbing liquid thereby produces a semi-sweet gas with reduced concentration of hydrogen sulfide and a rich liquid solution. | 06-11-2009 |
| 20100061909 | EXHAUST GAS TREATING METHOD - An exhaust gas treating method removes sulfur dioxide from exhaust gas containing at least sulfur dioxide and mercury by bringing the exhaust gas into contact with absorption liquid. Persulfate is added into the absorption liquid or alternatively, iodine gas is added to the exhaust gas before the exhaust gas is brought into contact with the absorption liquid. A high removal rate for both sulfur dioxide and mercury is stably maintained if the load of power generation and the composition of exhaust gas fluctuate. | 03-11-2010 |
| 20130078174 | DECOMPOSITION/ELIMINATION METHOD USING A PHOTOCATALYTIC MATERIAL - The present invention provides a new method for decomposing and/or removing hazardous substances using a photocatalytic material. The method of the present invention is sufficiently useful in fields requiring quick decomposition and/or removal of hazardous substances in gas and/or liquid phases. The decomposition method of the present invention using a photocatalytic material enables significantly efficient and rapid decomposition of hazardous substances in gas and/or liquid phases by causing a photocatalytic material to coexist with a dilute hydrogen peroxide solution. | 03-28-2013 |
| 423243030 | Oxygen | 1 |
| 20150352486 | FLUE GAS-TREATING METHOD AND APPARATUS FOR TREATING ACIDIC TAIL GAS BY USING AMMONIA PROCESS - A flue gas-treating method for treating acid tail gas by using an ammonia process, comprising the following steps of: 1) controlling the concentration of sulfur dioxide in an acid tail gas entering an absorber to be ≦30,000 mg/Nm | 12-10-2015 |
| 423243050 | With component added to inhibit corrosion or scaling of processing apparatus | 3 |
| 20120177554 | CORROSION CONTROL IN AND SELENIUM REMOVAL FROM FLUE GAS WET SCRUBBER SYSTEMS - A method and composition for the reduction of the emission of selenium into the environment from the burning of fossil fuels with the use of two chemistries, either individually or in combination with each other. The method uses polydithiocarbamic compounds, including polydithiocarbamic compounds derived from a polymer produced from acrylic-x and alkylamine in conjunction with a scrubber process to capture selenium and reduce its emission in aqueous phase blowdown. The method and composition also helps reduce corrosion in the scrubber process. | 07-12-2012 |
| 20120177555 | CORROSION CONTROL IN AND SELENIUM REMOVAL FROM FLUE GAS WET SCRUBBER SYSTEMS - A method and composition for the reduction of the emission of selenium into the environment from the burning of fossil fuels with the use of two chemistries, either individually or in combination with each other. The method uses polydithiocarbamic compounds, including polydithiocarbamic compounds derived from a polymer produced from acrylic-x and alkylamine in conjunction with a scrubber process to capture selenium and reduce its emission in aqueous phase blowdown. The method and composition also helps reduce corrosion in the scrubber process. | 07-12-2012 |
| 20150375167 | METHOD AND APPARATUS FOR PREVENTING CORROSION OF COMPRESSOR IMPURITY SEPARATION MECHANISM - An alkalinity control agent is sprayed upstream of a compressor in a first impurity separator to discharge impurities containing at least sulfur oxides in exhaust gas together with drain from an aftercooler in the first impurity separator. | 12-31-2015 |
| 423243060 | Ammonium compound reactant | 4 |
| 20100296993 | METHOD FOR THE CLEANING OF OFF-GAS - The present invention relates to a method for cleaning off-gas comprising the following steps: 1. sulphur dioxide is separated from the off-gas by way of at least one first scrubber stage (c) by means of ammonia or ammonium compounds, 2. the off-gas is transferred into a second scrubber stage (d) and 3. in the second scrubber stage the sulphur dioxide not separated in the first scrubber stage (c), is oxidised to sulphuric acid and separated in at least one scrubber (d) and simultaneously, the ammonia released in the first scrubber stage (d) is separated by means of the formed sulphuric acid, whereby ammonium sulphate is formed, 4. the separated stream of the second scrubber stage (d) is transferred into the first scrubber stage (c). | 11-25-2010 |
| 20110044875 | ATS TAIL GAS TREATING PROCESS FOR SRU AND SWS OFF GASES - The present invention relates to a system and process utilizing ammonium thio sulfate solution (ATS) as the primary liquid absorption agent that is re-circulated through an SO2 Contactor/Absorber for high efficiency contacting and absorption of sulfur dioxide, SO | 02-24-2011 |
| 20110150733 | DESULFURIZATION OF, AND REMOVAL OF CARBON DIOXIDE FROM, GAS MIXTURES - A method of heating a used absorption liquid resulting from a carbon dioxide absorption stage in which a CO | 06-23-2011 |
| 20130004400 | CHILLED AMMONIA BASED CO2 CAPTURE SYSTEM WITH AMMONIA RECOVERY AND PROCESSES OF USE - Processes for recovering ammonia from an ammonium sulfate stream include reacting the ammonia sulfate stream with a lime slurry to form a slurry comprising calcium sulfate and ammonia; providing the slurry comprising calcium sulfate and ammonia to a stripper configured to recover the ammonia from the slurry; utilizing a heat source from a chilled ammonia process to the stripper; and extracting an ammonia vapor stream from the stripper. Also disclosed are systems for performing the processes. | 01-03-2013 |
| 423243070 | Transition metal or compound thereof reactant | 2 |
| 20160023162 | SYSTEMS AND METHODS FOR REMOVING SULFUR DIOXIDE FROM A GAS STREAM - Methods for removing sulfur dioxide front a gas stream are disclosed. A method may include passing a gas stream comprising SO | 01-28-2016 |
| 20160193565 | METHOD FOR REMOVING DUST AND SULPHUR OXIDES FROM PROCESS GASES | 07-07-2016 |
| 423243080 | Alkali or alkali earth compound reactant | 22 |
| 20080241037 | METHOD AND SYSTEM OF CONTROLLING SULFUR OXIDES IN FLUE GAS FROM COAL OR OIL-FIRED BOILERS - A method of removing SO | 10-02-2008 |
| 20090317316 | AUTOMATED SULFUR RECOVERY LOOP - A method operable to remove contaminants from a contaminated fluid stream is provided. The process includes receiving the fluid stream containing contaminants. A first portion of the contaminants are removed from the fluid stream with a first scrubbing vessel. A first base solution reacts with the contaminants such that the contaminants enter a contaminant solution. A remaining portion of the contaminants from the fluid stream is then removed with a at least one additional scrubbing vessel, wherein a second base solution reacts with the contaminants such that part of the remaining portion of the contaminants enter a second solution. Water content is then removed from the fluid stream with a desiccating module, wherein the desiccating module outputs a clean fluid stream. | 12-24-2009 |
| 20100055015 | Low temperature mercury control process - The Low Temperature Mercury Control, or LTMC, process is a technology developed by us for controlling mercury emissions from coal-fired power plants. In the LTMC process, mercury emissions are controlled by cooling the exhaust flue gases with an air heater (or water spray) beyond the typical 300° F. to about 200-220° F., thereby promoting mercury absorption on the coal fly ash. The fly ash containing the absorbed mercury is then captured in the power plant's existing particulate collection device. An alkaline material, magnesium hydroxide slurry in our tests, is injected to eliminate sulfur trioxide (sulfuric acid) which could otherwise condense at the cool temperature and corrode or foul the power plant's air heater and ductwork. | 03-04-2010 |
| 20100119428 | EXHAUST-GAS TREATMENT APPARATUS AND EXHAUST-GAS TREATMENT METHOD - An object is to provide an exhaust-gas treatment apparatus capable of realizing a dissolved-salt spray method easily and at low cost. An exhaust-gas treatment apparatus that removes SO | 05-13-2010 |
| 20100329957 | EXHAUST-GAS TREATMENT APPARATUS AND EXHAUST-GAS TREATMENT METHOD - An object is to provide an exhaust-gas treatment apparatus capable of realizing a dissolved-salt spray method easily and at low cost. An exhaust-gas treatment apparatus that removes SO | 12-30-2010 |
| 20110052470 | AIR POLLUTION CONTROL SYSTEM AND METHOD FOR COAL COMBUSTION BOILER - An air pollution control system for a coal combustion boiler according to the present invention includes: a NOx removing apparatus ( | 03-03-2011 |
| 20120087852 | METHOD AND SYSTEM FOR REDUCING LIME CONSUMPTION IN DRY FLUE GAS DESULFURIZATION SYSTEMS - In a method for reducing lime consumption in DFGD systems, a slaker is provided wherein lime and water is introduced to produce a slaked lime slurry. The slurry is introduced into a spray dryer wherein the slurry is atomized. A flue gas stream is also introduced into the spray dryer and reacts with the atomized slurry, causing calcium sulfate and sulfite, as well as unreacted lime particulate to form. A portion of the particulate is filtered and sent back in a substantially dry form to the slaker to form part of the slurry. | 04-12-2012 |
| 20120148467 | METHOD FOR WET FLUE GAS DESULFURIZATION - A wet flue gas desulfurization process uses byproduct polyester streams such as those from the production of PLA and/or PGA consisting of hydroxy acids and other organic acids to catalyse the solubilization of calcium from limestone and to further catalyse the reaction of calcium with SO | 06-14-2012 |
| 20120275980 | MEANS AND METHODS FOR UTILIZING SODIUM HYDROXIDE - A method and apparatus for diluting a solution of an alkali metal hydroxide (MOH) by using seawater or any other aqueous solution are disclosed, in which a concentrated MOH solution and seawater contact opposite sides of a membrane adapted to transmit water but not other molecules, thus creating a diluted solution of MOH and concentrated brine. Additional embodiments include means for limiting fouling of the system by removing Ca and Mg from the seawater by precipitation or reaction with a flocculant. Means and methods for adapting the method and apparatus for use in a flue gas desulfurization system are also disclosed. | 11-01-2012 |
| 20130064748 | METHOD AND APPARATUS FOR CAPTURING SOx IN A FLUE GAS PROCESSING SYSTEM - Systems and processes for treating a flue gas for removing sulfur oxides (SOx) entrained in the flue gas generally includes contacting the gas stream with an aqueous alkali and/or alkaline earth metal hydroxide solution such as sodium hydroxide and reacting SOx entrained in the gas stream to form an aqueous alkali and/or alkaline earth metal sulfur-containing salt solution such as sodium sulfate. The aqueous alkali and/or alkaline earth metal sulfur-containing salt solution can be introduced into an electrodialysis apparatus configured to electrolyze water to form hydrogen and hydroxyl ions that selectively combine with alkali and/or alkaline earth metal ions and sulfur containing ions from the aqueous alkali and/or alkaline earth metal sulfur containing salt feedstream to form a regenerated alkali and/or alkaline earth metal hydroxide feedstream and an acid containing feedstream. | 03-14-2013 |
| 20130108535 | FLUE GAS DESULFURIZATION | 05-02-2013 |
| 20130156673 | AIR POLLUTION CONTROL SYSTEM AND METHOD - An air pollution control system comprises a SOx removal equipment for reducing sulfur oxides from flue gas from a boiler, a cooler for reducing the sulfur oxides that remain in the flue gas and for decreasing a gas temperature, CO | 06-20-2013 |
| 20130315811 | SHIP FLUE GAS SCRUBBING APPARATUS AND METHOD - A ship flue gas scrubbing apparatus and scrubbing method are provided. The apparatus includes a housing, an upper scrubbing layer at the upper side inside the housing, and a liquid collecting pool in the lower side inside the housing, a flue gas leading-in port between the scrubbing layer and the liquid collecting pool, a scrubbing seawater inlet above the scrubbing layer, and a cooler located at a flue gas passage between the flue gas inlet outside the housing and the scrubbing layer. The method includes leading flue gas, cooling, injecting scrubbing seawater, scrubbing and other steps. | 11-28-2013 |
| 20140170047 | METHOD FOR REMOVING IMPURITIES FROM FLUE GAS CONDENSATE - The present invention relates to a method for treating flue gas and/or condensates thereof suitable for removal of sulphur-containing compounds. The invention also relates to the purified flue gas and to a system for conducting the method according to the invention. | 06-19-2014 |
| 20140241971 | OXIDATION SYSTEM AND METHOD FOR CLEANING WASTE COMBUSTION FLUE GAS - Methods and systems for the removal of SO2 from waste combustion flue gas are described herein. The subject methods and systems entail one step, two steps or three steps to produce cleaned flue gas for release to the atmosphere. | 08-28-2014 |
| 20150139881 | WET TYPE FLUE-GAS DESULFUIZATION APPARATUS AND METHOD FOR ADJUSTING OXIDATION REDUCTION POTENTIAL OF ABSORBENT THEREFOR - A wet type flue-gas desulfurization apparatus includes a desulfurization apparatus main body; a gas introducing unit that is disposed on a side wall of the desulfurization apparatus main body and that introduces a flue gas; an absorbent accumulating unit that accumulates an absorbent which has absorbed the sulfur oxide present in the flue gas; a circulation line that circulates the absorbent from the absorbent circulating unit; a spray pipe that is disposed in the vicinity of the middle portion of the desulfurization apparatus main body and that sprays the absorbent, which is circulated in the circulation line, as a spray liquid from a nozzle; an ORP meter that measures the oxidation reduction potential of the absorbent; and an oxidation resistant pipe group that, in the vicinity of the interface of the absorbent present in the absorbent accumulating unit, cushions a falling liquid falling from an absorber of the absorbent. | 05-21-2015 |
| 20150352490 | AIR POLLUTION CONTROL SYSTEM AND AIR POLLUTION CONTROL METHOD - Provided is an air pollution control system including: a boiler, a denitration apparatus; an air heater; a precipitator; a desulfurization apparatus; a dehydrator; a concentration apparatus that is configured to remove some of water of dehydrated filtrate from the dehydrator; a spray drying apparatus provided with a spray unit that is configured to spray concentrated/dehydrated filtrate concentrated by the concentration apparatus; and a flue gas introduction line through which branch gas branched from the flue gas is introduced to the spray drying apparatus. | 12-10-2015 |
| 20160016109 | MARINE EXHAUST GAS SCRUBBER - A vertical scrubber ( | 01-21-2016 |
| 20160096130 | DUST SEPARATOR USEFUL WITH DRY SCRUBBER SYSTEM - An air quality control system (AQCS) | 04-07-2016 |
| 20160250587 | METHOD AND APPARATUS FOR WET DESULFURIZATION SPRAY TOWERS | 09-01-2016 |
| 20220134279 | SOx CAPTURE USING CARBONATE ABSORBENT - A desulfurization gas process includes water vapor, CO | 05-05-2022 |
| 423243100 | And additional ionic reactant | 1 |
| 20160082385 | High-Efficiency Method For Removing Sulfur And Mercury Of Coal-Fired Flue Gas, And Apparatus Thereof - A high-efficiency method for removing sulfur and mercury of coal-fired flue gas, and an apparatus thereof. The method comprises: activating, by using water vapor, lime or Ca(OH) | 03-24-2016 |
| 423243110 | And subsequent reactive treatment to remove sulfur from spent reactant | 2 |
| 20140322118 | REGENERATIVE RECOVERY OF CONTAMINANTS FROM EFFLUENT GASES - A contaminant gas is removed from a feed gas in two absorption and stripping circuits operated in tandem. The gas is first passed through a rich gas absorber producing a rich absorption liquor from which contaminant gas is stripped in a rich liquor stripper. A lean gas exiting the rich gas absorber is passed through a lean gas absorber, producing a lean absorption liquor from which contaminant gas is stripper in a lean liquor stripper. Regenerated absorption media exiting the respective strippers are recirculated to the respective absorbers. | 10-30-2014 |
| 423243120 | Gaseous treatment | 1 |
| 20090324473 | PROCESS FOR DISPOSAL OF MERCAPTANS - The invention provides a process for disposal of mercaptans, the process comprising the steps of: (a) contacting a feed gas stream comprising mercaptans with liquid sulphur in a sulphide producing zone at elevated pressure and at a temperature in the range of from 300 to 450° C. to obtain a liquid stream comprising sulphur and sulphide compounds; (b) optionally separating the liquid stream obtained in step (a) into a first liquid phase enriched in liquid sulphur and a second liquid phase enriched in sulphide compounds; (c) combusting at least part of the sulphide compounds at elevated temperature in the presence of an oxygen-containing gas in a sulphur dioxide generation zone using a sulphide burner to which burner oxygen-containing gas is supplied, whereby at least part of the sulphide compounds is converted to sulphur dioxide to obtain a gas stream comprising sulphur dioxide. | 12-31-2009 |
