Entries |
Document | Title | Date |
20080207973 | Purge Gas Streams to Stagnant Zones within Oxygenate-to-Olefin Reactor - The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor the oxygenates with a catalyst to produce light olefins and wherein the reactor comprises at least two zones, a first zone wherein gas circulates at a faster rate than a second zone wherein a gas circulates at a slower rate; and inserting a quantity of inert gas into the second zone to increase circulation of any materials located in said second zone. The invention prevents accumulation of undesirable by-products within stagnant zones within the reactor and reduces the amount of coke deposited on catalyst or on surfaces within these zones. | 08-28-2008 |
20080242909 | Process for the Production of High-Octane Hydrocarbon Compounds by the Selective Dimerization of Isobutene Contained in a Stream Which Also Contains C5 Hydrocarbons - A process is described for the production of high-octane hydrocarbon compounds by means of the selective dimerization of isobutene, in the presence of C | 10-02-2008 |
20080275283 | Reactive Distillation for the Dehydration of Mixed Alcohols - The present invention relates to a process for the production of alkene(s) from a feedstock comprising of at least one monohydric aliphatic paraffinic alcohol by using a reactive distillation reactor for the dehydration of mixed alcohols. | 11-06-2008 |
20080287722 | Method for Dehydrating Fatty Alcohols - A process for the production of hydrocarbons by dehydrating primary alcohols with a dehydration catalyst of trifluoromethansulfonic acid is disclosed. The hydrocarbons so produced have fewer undesired secondary reactions. Accordingly, cosmetic and cleaning compositions incorporating the hydrocarbons produced by way of the process are also disclosed. | 11-20-2008 |
20080300439 | Process for the Separation of C5 Hydrocarbons Present in Streams Prevalently Containing C4 Products Used for the Production of Highoctane Hydrocarbon Compounds By the Se-Lective Dimerization of Isobutene - A process is described for the separation of C | 12-04-2008 |
20090005624 | Integrated Processing of Methanol to Olefins - Processing schemes and arrangements for the production of olefins and, more particularly, for the production of light olefins from a methanol feedstock are provided. Such processing schemes and arrangements integrate oxygenate conversion at higher pressures and with subsequent heavy olefins conversion processing to produce additional light olefin products. In particular, this invention provides an efficient method for removal of heavy oxygenate materials such as aldehydes and ketones through the recirculation of a mixed water/methanol solvent from a reactor in which methanol is converted into dimethyl ether and water. | 01-01-2009 |
20090018378 | Oxygenate To Olefins Process Involving Supercritcal Conditions - This invention, in one embodiment, is drawn to a process for forming olefin product by contacting an oxygenate with an olefin-forming catalyst under supercritical conditions to form an olefin product. This invention also relates to methods for activating molecular sieve catalyst, regenerating molecular sieve catalyst, and forming and/or disposing a co-catalyst within a molecular sieve catalyst, each under supercritical conditions. | 01-15-2009 |
20090018379 | Synthesis Of Chabazite Structure-Containing Molecular Sieves And Their Use In The Conversion Of Oxygenates To Olefins - In a method of synthesizing a silicoaluminophosphate or aluminophosphate molecular sieve comprising a CHA framework-type material, a synthesis mixture is provided comprising a source of aluminum, a source of phosphorus, optionally a source of silicon and at least one organic template of formula (I): | 01-15-2009 |
20090069615 | METHOD AND EQUIPMENT FOR PREPARING ISOBUTYLENE USING TERTIARY BUTYL ALCOHOL - This invention discloses a method and equipment for preparing isobutylene using tertiary butyl alcohol. The equipment comprises a reaction vessel and a separating column. The upper portion of the separating column is fitted with a column top condenser, and the bottom of the column is fitted with a heater. The reaction vessel and the separating column are connected to each other by means of a pipe. One end of the dehydration column is connected to the heater at the bottom of the separating column, and the other end, after passing through a cooling unit, is connected to a distributor at the top of the separating column. A condenser with an outlet is connected to the outside of the said column top condenser. Isobutylene gas, which is generated as the solid superacid catalyst continuously reacts with and splits the tertiary butyl alcohol being introduced into the reaction vessel, flows together with boiling tertiary butyl alcohol gas into the separating column and is conducted by the distributor to the dehydrated extractant. Isobutylene gas flows out of the top of the column and passes through the condenser whereby it is cooled to become liquid isobutylene finished product. Unreacted tertiary butyl alcohol is condensed by the column top condenser to form liquid condensate, part of which is refluxed within the column and part of which flows out, returning to the reaction vessel. The dehydrated extractant passes through the distributor and enters the separating column from the top of the column. After the moisture in the rising gas is extracted and separated, it flows to the bottom of the column. After the dehydrated extractant has absorbed water, it is sent to the dehydration column where it is heated, the steam is separated from it, and the product is obtained. | 03-12-2009 |
20090082605 | Process for Producing Ethylene - The present invention relates to a process for the production of ethylene from a feedstock comprising ethanol. | 03-26-2009 |
20090099401 | Process for making isooctenes from aqueous isobutanol - The present invention relates to a catalytic process for making isooctenes using a reactant comprising isobutanol and water. The isooctenes so produced are useful for the production of fuel additives. | 04-16-2009 |
20090118558 | Dehydration Process - A process for producing an olefin and/or an ether is described, which comprises heating an alcohol in the presence of an acidic ionic compound which exists in a liquid state at a temperature of below 150° C. | 05-07-2009 |
20090124841 | Process and Plant for Producing C2-C4 Olefins from Methanol and/or Dimethyl Ether - In producing C | 05-14-2009 |
20090137856 | METHOD AND DEVICE FOR PRODUCING LOWER OLEFINS FROM OXYGENATES - Method and device for manufacturing at least one low olefin from an oxygenate-containing first reaction mixture ( | 05-28-2009 |
20090187058 | PROCESS FOR THE PREPARATION OF AN OLEFIN - Process for the preparation of an olefin comprising a) reacting a combination of an oxygenate feed selected from the group consisting of alcohols and ethers, and an olefinic co-feed in a reactor in the presence of a one-dimensional zeolite having 10-membered ring channels to prepare an olefinic reaction mixture; b) separating the olefinic reaction mixture into at least a first olefinic product fraction and a second olefinic fraction containing olefins with 4 or more carbon atoms; and c) recycling at least part of the second olefinic fraction obtained in step b) to step a) as olefinic co-feed. | 07-23-2009 |
20090187059 | PROCESS FOR THE PREPARATION OF AN OLEFIN - Process for the preparation of ethylene and/or propylene comprising reacting an oxygenate feed and an olefinic co-feed in a reactor in the presence of a zeolite catalyst to prepare an olefinic reaction mixture; wherein the olefinic co-feed is partially obtained from an olefinic refinery stream and partially obtained from a olefinic recycle stream. | 07-23-2009 |
20090203949 | Process for the production of hydrocarbons - A process for the production of a hydrocarbon comprises reacting methanol, dimethyl ether, methyl acetate or mixtures thereof, with an olefin in the presence of methyl halide and/or hydrogen halide and at least one compound selected from the group consisting of ruthenium carbonyl halides, osmium carbonyl halides and mixtures thereof. | 08-13-2009 |
20090259086 | Process for Producing Olefins - The present invention relates to a process for the production of mono-olefin(s) from a feedstock comprising of at least one monohydric aliphatic paraffinic alcohol. | 10-15-2009 |
20090270668 | Process for Producing Olefins - The present invention relates to a process for the co-production of ethylene and propylene from an ethanol feedstock and a propanol feedstock. | 10-29-2009 |
20090281362 | Process for Producing Propylene - The present invention relates to a process for the production of propylene from a feedstock comprising propanol. | 11-12-2009 |
20090299117 | Diisobutylene process - This invention is a process for producing diisobutylene from isobutylene. The process comprises first contacting a sulfonic acid resin with a reaction feed comprising isobutylene and tertiary butyl alcohol to produce a product stream comprising diisobutylene, isobutylene, tertiary butyl alcohol, and water. The product stream is distilled to produce a first overhead stream comprising water and isobutylene and a first bottoms stream comprising diisobutylene and tertiary butyl alcohol. Water is separated from the first overhead stream, and the resulting isobutylene-enriched stream is recycled back to the reaction step. The first bottoms stream is distilled to produce a second overhead stream comprising tertiary butyl alcohol and a bottoms product stream comprising diisobutylene. | 12-03-2009 |
20090326298 | INTEGRATION OF OTO PROCESS WITH DIRECT DME SYNTHESIS - Processes and systems for utilizing products from DME synthesis in converting oxygenates to olefins are provided that include removing a DME-reactor effluent from a DME reactor, wherein the DME effluent includes DME, water, and methanol; separating carbon dioxide gas from the DME reactor effluent in a liquid gas separator to produce a degassed effluent stream. The processes and systems can include feeding the degassed effluent stream to an oxygenate to olefin reactor to produce an olefin containing effluent, wherein the olefin containing effluent further includes oxygenates. Alternatively, the processes and systems can include providing the degassed effluent stream to a DME column to produce a DME feedstock and a solvent stream, wherein the solvent stream includes methanol and water; feeding the DME feedstock to an oxygenate to olefin reactor to produce an olefin containing effluent, wherein the olefin containing effluent further includes oxygenates; and contacting at least a portion of the olefin containing effluent with the solvent stream in a solvent contacting zone to produce an olefin containing raffinate stream and an oxygenate containing extract. | 12-31-2009 |
20100016648 | METHOD FOR INCREASING YIELDS OF ETHYLENE AND PROPYLENE IN MTO PROCESS - The present invention discloses a method for enhancing yields of ethylene and propylene in MTO process, comprising: i) feeding a feedstock comprising C | 01-21-2010 |
20100056838 | DEHYDRATION OF ALCOHOLS OVER TUNGSTOSILICIC ACID SUPPORTED ON SILICA - The present invention relates to a process for the dehydration of one or more alcohols, which process comprises contacting one or more alcohols in the presence of one or more ethers with a supported heteropolyacid catalyst, characterised in that: (i) the heteropolyacid is tungstosilicic acid in the form of the free acid and supported on a silica support, (ii) said supported heteropolyacid catalyst has a heteropolyacid loading of from 0.5 to 0.9 mg/m | 03-04-2010 |
20100105973 | ABSORBER DEMETHANIZER FOR METHANOL TO OLEFINS PROCESS - A process for conversion of methanol to olefins (MTO), including: contacting methanol and air in a methanol-to-olefins reactor; recovering an effluent from the methanol-to-olefins reactor comprising methanol, ethylene, and nitrogen oxides; separating the effluent via one or more reactive distillation and/or distillation stages using a hydrocarbon absorbent to recover a first fraction comprising ethylene and a second fraction comprising methane; wherein the separating comprises operating the one or more extractive distillation and/or distillation stages at temperatures and pressures sufficient to prevent any substantial conversion of nitrogen oxides to N | 04-29-2010 |
20100145125 | PROCESS OF PRODUCING LIGHT OLEFINS THROUGH THE CONVERSION OF METHANOL AND ETHANOL - The present invention discloses a process of producing light olefins through the conversion of methanol and ethanol. The process comprises: feeding a first portion of a feed via a distributor at the bottom of a fluidized-bed reactor to a reaction zone containing a catalyst; feeding a second portion of the feed from at least one location above the distributor to the reaction zone; contacting the feed with the catalyst and allowing it to react, to give a stream containing ethylene and propylene; and withdrawing the stream containing ethylene and propylene from the top of the reactor, and passing it to a separation system to separate ethylene and propylene, wherein the first portion of the feed and the second portion of the feed comprises each independently methanol or ethanol or the both, with a proviso that the total feed comprises both methanol and ethanol, and a weight ratio of methanol to ethanol in the total feed is in a range of from 99:1 to 0.1:1. | 06-10-2010 |
20100168491 | CATALYST AND METHOD OF PRODUCING OLEFINS USING THE CATALYST - Novel catalyst obtained by supporting one or two or more kinds of those selected from the group consisting of nickel, aluminum, manganese, iron and copper on regular meso-porous material or comprising the regular meso-porous material, and working to form one or two or more kinds of olefins by using one or two or more kinds of alcohols as starting materials. A main component of the wall constituting the regular meso-porous material is silica. The regular meso-porous material has a pore diameter in a range of 1.4 to 10 nm. One or two or more kinds of those selected from the group consisting of nickel, aluminum, manganese, iron and copper are supported on the regular meso-porous material by a template ion-exchange method. The alcohol has carbon atoms in a number in a range of 2 to 10. | 07-01-2010 |
20100168492 | ALKALINE EARTH METAL COMPOUND-CONTAINING ZEOLITE CATALYST, PREPARATION METHOD AND REGENERATION METHOD THEREOF, AND METHOD FOR PRODUCING LOWER HYDROCARBON - An alkaline-earth metal compound-containing zeolite catalyst composed of a composite material comprising at least a first component, a second component, and a third component, wherein the first component is composed of at least one of zeolites selected from a group consisting of proton-type zeolites and ammonium type zeolites, the second component is composed of at least one of alkaline-earth metal compounds, and the third component is composed of at least one selected from a group consisting of aluminum oxides, aluminum hydroxides, silicon oxides, silicon hydroxides, and clay minerals. The first component has a molar ratio of Si/Al of 10 or more and 300 or less. Content of the second component relative to the first component defined is 0.3 mass % or more and less than 10 mass % as alkaline-earth metal. Content of the third component relative to the first component is 15 mass % or more and 200 mass % or less. | 07-01-2010 |
20100179363 | Oxygenate Conversion Catalyst System And Processes For Making And Using Same - The invention includes a method for impregnating a molecular sieve primary catalyst with an aromatic co-catalyst, the method comprising contacting the small pore molecular sieve primary catalyst having a porous framework structure with a combination of from at least 50 wt % to about 99.9 wt % of an aromatic co-catalyst and from about 0.1 wt % to less than 50 wt % of a polar impregnation agent containing one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, phosphorus, and boron, under conditions sufficient to impregnate the porous framework structure of the primary catalyst with the aromatic co-catalyst (and optionally also with the polar impregnation agent), thus forming an integrated catalyst system. Methods for converting oxygenates to olefins using said integrated catalyst system are also described herein. | 07-15-2010 |
20100179364 | Process for the Production of a Hydrocarbon - A process for the production of a hydrocarbon which comprises contacting, in a reactor, methanol and/or dimethyl ether with a catalyst comprising a metal halide, such as a zinc halide, in which the methanol and/or dimethyl ether is contacted with the catalyst in the presence of at least one phosphorus compound having at least one P—H bond. | 07-15-2010 |
20100179365 | METHOD AND APPARATUS FOR PRODUCING PROPYLENE - A method for producing propylene including: transferring a feed gas including dimethyl ether and/or methanol and C4 and/or C5 olefins into a reactor, and reacting the feed gas in the presence of a catalyst, the feed gas prior to transferring into the reactor having a (supplied C4 and/or C5 olefins)/(supplied dimethyl ether and methanol) ratio of 0.25 to 7.5, in terms of the molar ratio based on the number of carbon atoms, and the feed gas being contacted with the catalyst at 350° C. to 600° C.; and an apparatus for producing propylene including: a hydrogenation reactor in which alkynes and/or dienes contained in C4 and/or C5 hydrocarbons is partially hydrogenated to be converted into an olefin having one double bond; a reactor in which C4 and/or C5 hydrocarbons is reacted with dimethyl ether and/or methanol in the presence of a catalyst; and a separator for separating propylene from the reaction product. | 07-15-2010 |
20100179366 | PROCESS AND APPARATUS FOR PRODUCING PROPYLENE - A process for producing propylene, which including feeding at least one of dimethyl ether and methanol to a reactor to be reacted in the presence of a catalyst; supplying an obtained reaction product to a separator by which low-boiling compounds having a boiling point of −50° C. or lower at atmospheric pressure among the reaction product are separated; and recycling a proportion of at least 70% of a total amount of the separated low-boiling compounds to said reactor. | 07-15-2010 |
20100234659 | METHOD FOR PREPARING POLYMER GRADE LOW-CARBON OLEFIN THROUGH SEPARATION OF METHANOL PYROLYSIS GAS - The present invention provides a method for preparing the polymer grade low-carbon olefin through separation of the methanol pyrolysis gas, including steps of the compression, impurity removal, and absorption and separation. In the absorption and separation step, the pyrolysis gas is sent to the front-end ethylene removing column, and then is, with the C4 absorbent, further absorbed and separated to produce polymer grade ethylene products, polymer grade propylene products, and C4 and C5 products. The moderate-temperature and moderate-pressure separation without a cold box according to the present invention provides safer production process, less investment in the equipment, as well as easier separation and lower energy consumption as a result of the front-end ethylene removing and C4 absorption and separation process. | 09-16-2010 |
20100249481 | PROCESS FOR PREPARING ETHENE - A process for the production of ethene by the vapour phased chemical dehydration of a feed comprising ethanol, water and ethoxyethane in a reactor at elevated temperature and pressure in the presence of a bed of catalyst comprising a supported heteropolytungstic acid characterised in that the reactor is maintained or configured so that it operates in a regime which satisfies the following parameters: 0.05<(P | 09-30-2010 |
20100280301 | PROCESS FOR REDUCING THE OXYGEN CONTENT OF HIGH-OXYGEN FEEDSTOCKS - A process is disclosed for reducing the oxygen content of a high-oxygen feedstock. The process is particularly suitable for biomass-based feedstocks. The process comprises contacting the feedstock with carbon monoxide and/or coke in the presence of a catalyst. Conveniently, the coke may be present in the form of a deposit on the catalyst. Carbon monoxide may be generated in a regeneration step of the catalyst. | 11-04-2010 |
20100298619 | PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT - Process for the preparation of an olefinic product, comprising reacting an oxygenate feedstock comprising oxygenate species having an oxygen-bonded methyl group and an olefinic co-feed, in the presence of an oxygenate conversion catalyst comprising a molecular sieve having one-dimensional 10-membered ring channels, to prepare an olefinic reaction effluent, wherein the olefinic co-feed comprises less than 10 wt % of C5+ hydrocarbon species; fractionating the olefinic reaction effluent to obtain at least a light olefinic fraction comprising ethylene, and a heavier olefinic fraction comprising C4 olefins and less than 10 wt % of C5+ hydrocarbon species; recycling at least part of the heavier olefinic fraction; and withdrawing at least part of the light olefinic fraction as olefinic product. | 11-25-2010 |
20100331596 | PROCESS FOR INCREASING ETHYLENE AND/OR PROPYLENE YIELD DURING CONVERSION OF OXYGENATES - The present invention provides a process for increasing ethylene and/or propylene yield during conversion of oxygenates using a system comprising a reactor and a regenerator, wherein the reactor comprises a fluidized bed reactor and a riser reactor, which process increases ethylene and/or propylene yield by using a mixture of the deactivated catalyst from the fluidized bed reactor and the regenerated catalyst from the regenerator in the riser reactor for further cracking the C | 12-30-2010 |
20110112349 | Metathesis Catalyst and Process for Use Thereof - This invention relates to a catalyst compound for the metathesis of olefins represented by the formula: | 05-12-2011 |
20110124939 | Dehydration of Alcohols on Crystalline Silicates - The present invention relates to a process for the dehydration of at least an alcohol to make at least an olefin, comprising: | 05-26-2011 |
20110144404 | MTO Feed Purification - A process is presented for improving the quality of an oxygenate feedstream to an oxygenate to olefins conversion reactor. The process includes passing the feedstream to a fractionation column having a sufficient number of trays to remove the sodium in the form of sodium hydroxide. The fractionation column is also sized to have a sufficient number of trays to minimize the amount of oxygenates being passed out with the removed sodium hydroxide. | 06-16-2011 |
20110190564 | PROCESS FOR PRODUCTION OF OLEFIN - The present invention provides a process for producing an olefin from a carboxylic acid having a β-hydrogen atom or a derivative thereof using the compound containing iodine and at least one metal elements selected from the group consisting of Groups 6, 7, 8, 9, 10 and 11 metals as a catalyst. | 08-04-2011 |
20110237854 | METHOD FOR EXTRACTING GASEOUS HYDROCARBONS FROM BIOGENIC RAW MATERIALS - The invention relates to a method for extracting gaseous hydrocarbons, in particular liquid gas and/or a gas mixture resembling natural gas or one or more components contained in liquid gas or in the gas mixture resembling natural gas. The starting material used contains oxygen-containing hydrocarbons. The method comprises the following steps: providing the starting material—contacting the starting material with a porous catalyst in the absence of oxygen at a temperature of 300-850° C. in a converting reactor, resulting in a hydrocarbon-containing product gas mixture, in which the proportion by weight of the gaseous hydrocarbons is greater than that of the liquid hydrocarbons, —collecting the hydrocarbon-containing product gas stream and supplying the product gas stream to a separating device, where product separation is performed. | 09-29-2011 |
20110288358 | METHOD FOR PRODUCING A PRODUCT CONTAINING C3H6 AND C2H4 - A process for producing a product containing C3H6 and C2H4 includes simultaneous conversion of MeOH and EtOH in an adiabatic sequentially operated reactor containing a plurality of reaction stages. Each of the plurality of reaction stages of the reactor is provided with a fixed bed of a form-selective catalyst. A gaseous feed stream including MeOH, DME and H2O is charged to at least a first of the reaction stages of the reactor with a temperature in a range of 300 to 600° C. at a pressure in a range of 0.1 to 20 bar[a]. EtOH is fed into at least, one of the reaction stages of the reactor. | 11-24-2011 |
20110313226 | Zeolitic Materials of the LEV-Type Structure And Methods For Their Production - Described is a process for the production of a zeolitic material having an LEV-type framework structure comprising YO | 12-22-2011 |
20120116143 | LOWER OLEFINS PRODUCING CATALYST AND METHOD FOR PRODUCING LOWER OLEFINS USING SAME - A lower olefin producing catalyst which has high olefin production efficiency and maintains its activity for a long period of time when lower olefins are produced from an oxygen-containing compound, which is a solid catalyst used in producing lower olefins from an oxygen-containing compound, includes a solid-state catalyst component containing an MFI-type zeolite, in which, at a position where the shortest distance to the outer surface is maximum among all positions inside a structure of the solid catalyst, the thickness defined as a distance twice the shortest distance from the point to the outer surface is in a range of from 0.1 to 2.0 mm, and a method for producing lower olefins. | 05-10-2012 |
20120123179 | PROCESSES FOR PRODUCING LIGHT OLEFINS - A process for producing light olefins. A feedstock enters a pre-reaction zone and contacts a catalyst comprising at least one silicon-aluminophosphate molecular sieve and produces a gas-phase stream and a catalyst to be regenerated; the gas-phase stream and catalyst to be regenerated enter at least one riser, and the gas-phase stream and catalyst to be regenerated pass from an outlet of the at least one riser and enter a gas-solid rapid separation zone; the separated gas-phase stream enters a separation section; a first portion of the separated catalyst returns to the pre-reaction zone, and a second portion is regenerated in a regenerator; wherein an inlet of the at least one riser extends into the pre-reaction zone, about 60% to about 90% of the height of the at least one riser passes through a heat exchange zone, and the outlet extends into the gas-solid rapid separation zone. | 05-17-2012 |
20120157740 | QUENCH TOWER CATALYST RECOVERY - A process and apparatus is presented for the removal of solid particles from a gas stream. The process and apparatus includes adding a second stream of liquid that is sprayed over the openings in trays in a quench tower. The second spray stream provides for a veil of liquid to wash out solid particles from the vapor stream. | 06-21-2012 |
20120165589 | A PROCESS FOR THE DEHYDRATION OF ETHANOL TO PRODUCE ETHENE - The present invention relates to a process for the production of ethylene, from a feedstock comprising ethanol, in the presence of a phosphotungstic acid catalyst. | 06-28-2012 |
20120203047 | PROCESS AND CATALYST FOR CRACKING OF ETHERS AND ALCOHOLS - A process for the production of olefins from at least one of an alcohol and ether, the process including: contacting at least one alcohol or ether with a hydrofluoric acid-treated amorphous synthetic alumina-silica catalyst under decomposition conditions to produce an olefin. Also disclosed is a process for the production of isobutylene from methyl tertiary butyl ether, the process including: feeding methyl tertiary butyl ether (MTBE) to a reactor having at least one reaction zone containing a hydrofluoric acid-treated amorphous synthetic alumina-silica catalyst; contacting the MTBE with the hydrofluoric acid-treated amorphous synthetic alumina-silica catalyst under decomposition conditions to produce a reactor effluent comprising isobutylene, unreacted MTBE, heavies, and methanol; feeding the reactor effluent to a first distillation column; separating the isobutylene from the unreacted MTBE, heavies, and the methanol in the first distillation column to recover a first bottoms fraction comprising heavies, unreacted MTBE, and methanol and an isobutylene-rich overheads fraction. | 08-09-2012 |
20120209049 | Method and System For the Selective Oxidative Decarboxylation of Fatty Acids - Selective, radically initiated oxidative decarboxylation may produce low viscosity renewable fuels from biologically derived fats and oils. Fatty acids and triglycerides may be decarboxylated using oxidants at a water/oil interface. The oxidants may be produced using photo-Fenton reagents. The reaction advantageously can be carried out at room temperature and pressure and has fewer unwanted byproducts than traditional decarboxylation techniques. | 08-16-2012 |
20120220808 | METHOD FOR MANUFACTURING OLEFINS - The present invention relates to a process for producing an olefin, including the step of subjecting an aliphatic primary alcohol having 12 to 24 carbon atoms to liquid phase dehydration reaction in the presence of a solid acid catalyst, wherein among a total acid content of the solid acid catalyst as measured by an ammonia temperature-programmed desorption (NH | 08-30-2012 |
20120226085 | METHOD FOR PRODUCING OLEFIN - The present invention provides a method for producing an olefin from a carboxylic acid having a β-hydrogen atom or an anhydride thereof in the presene of a catalyst containing at least one metal element selected from metals of Group 8, Group 9 and Group 10 and bromine element at a reaction temperature of 120° C. to 270° C. | 09-06-2012 |
20120253090 | SPHERICAL ZEOLITIC CATALYST FOR CONVERTING METHANOL INTO OLEFINS - A catalyst containing a pentasil-type alumosilicates and a binder, in the form of spheres having an average diameter between 0.3 and 7 mm, wherein the BET surface area of the catalyst ranges from 300 to 600 m | 10-04-2012 |
20120271088 | PROCESS FOR PRODUCING LOWER ALKENES WITH METHANOL OR DIMETHYL ETHER - Disclosed is a process for producing light olefins from methanol or dimethyl ether. In the process, the fresh catalyst or the regenerated catalyst is pretreated to deposit a certain amount of coke onto its interior pore surface in advance, to reduce the generation of alkane and heavy olefins, so as to increase the selectivities to ethylene and propylene; and during the production of the light olefins, the pretreated catalyst is used for catalyzing the methanol or the dimethyl ether to produce light olefins. The process can achieve higher yields of ethylene and propylene. | 10-25-2012 |
20120277513 | CATALYTIC COMPOSITION FOR PRODUCTION OF ALPHA-OLEFINS - Catalytic composition for producing an alpha-olefin and methods of making same. The catalytic composition includes a gamma-alumina substrate dopes with at least one element consisting of bismuth, copper, gallium, phosphorus, tin, and zinc, an amount of each element being within a range of from 150 parts per million to 1000 parts per million relative to a total doped weight of the gamma-alumina substrate. Additionally, at least one element is combined with at least one element consisting of cesium, lithium, and magnesium, an amount of each element being within the range of from 150 parts per million to 1000 parts per million relative to the total doped weight of the gamma-alumina substrate. | 11-01-2012 |
20120302810 | PROCESS FOR PREPARING AN ALKENE - A process for the preparation of an alkene from an oxygenate comprising contacting a reactant feedstream comprising at least one oxygenate reactant and water with a supported heteropolyacid catalyst at a temperature of at least 170° C., wherein the process is initiated using a start-up procedure comprising the following steps: (i) heating the supported heteropolyacid catalyst to a temperature of at least 220° C.; (ii) maintaining the heat-treated supported heteropolyacid catalyst of step (i) at a temperature of at least 220° C. for a time sufficient to remove bound water from the heteropolyacid component of the supported heteropolyacid catalyst; and (iii) whilst maintaining the supported heteropolyacid catalyst of step (ii) at a temperature of at least 220° C., contacting the supported heteropolyacid catalyst with the reactant feedstream having a temperature of at least 220° C. | 11-29-2012 |
20120310026 | PROCESS FOR PREPARING AN ALKENE - A process for the preparation of an alkene from an oxygenate comprising contacting a reactant feedstream comprising at least one oxygenate reactant and water with a supported heteropolyacid catalyst at a temperature of at least 170° C., wherein the process is initiated using a start-up procedure comprising the following steps: (i) heating the supported heteropolyacid catalyst to a temperature of at least 220° C.; (ii) maintaining the heat-treated supported heteropolyacid catalyst of step (i) at a temperature of at least 220° C. for a time sufficient to remove bound water from the heteropolyacid component of the supported heteropolyacid catalyst; (iii) under an anhydrous atmosphere, reducing the temperature of the heat-treated supported heteropolyacid catalyst of step (ii) to a temperature below 220° C.; and (iv) contacting the supported heteropolyacid catalyst of step (iii) with the reactant feedstream at a temperature of at least 170° C. | 12-06-2012 |
20130012748 | PROCESS TO INCREASE SELECTIVITY TO ETHYLENE IN OXYGENATES-TO-OLEFINS CONVERSIONS - A process for converting an oxygenate-containing feedstock to a product comprising olefins comprises including in the oxygenate-containing feedstock an amount of ammonia. The presence of the ammonia increases the product's ratio of ethylene to propylene. | 01-10-2013 |
20130023710 | FCC CATALYST ADDITIVE AND A METHOD FOR ITS PREPARATION - The present invention relates to a Fluid Catalytic Cracking (FCC) additive preparation process and composition, which has high efficiency in the production of light olefins C2, C3 and C4 hydrocarbons, specifically propylene. The present invention discloses the stabilization of medium pore zeolite specifically ZSM-5 using optimum phosphate salts at a pH in the range 7-9 with synergetic combination of silica rich binder to produce FCC additive having excellent stability under severe hydrothermal conditions. | 01-24-2013 |
20130035532 | SYNTHESIS OF TERMINAL ALKENES FROM INTERNAL ALKENES VIA OLEFIN METATHESIS - This disclosure relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by an olefin metathesis catalyst. According to one aspect, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting, in the presence of a ruthenium alkylidene metathesis catalyst, an olefinic substrate comprised of at least one internal olefin with a cross metathesis partner comprised of an alpha olefinic reactant, under reaction conditions effective to allow cross-metathesis to occur, wherein the reaction conditions include a reaction temperature of at least 35° C. The methods, compositions, reactions and reaction systems herein disclosed have utility in the fields of catalysis, organic synthesis, and industrial chemistry. | 02-07-2013 |
20130041196 | DEHYDRATION OF ALCOHOLS ON A CRYSTALLINE SILICATE OF LOW Si/Al RATIO - The present invention (in a first embodiment) relates to a process for the dehydration of an alcohol having at least 2 carbon atoms to make the corresponding olefin, comprising:
| 02-14-2013 |
20130041197 | METHOD OF PREPARING ALKENE COMPOUND - Disclosed is a method of preparing an alkene compound including introducing an acidic catalyst and a solvent into a reactor, increasing a temperature the reactor, and continuously removing water from the reactor while continuously supplying an alcohol into the reactor and continuously collecting an alkene compound. | 02-14-2013 |
20130060073 | METHOD AND SYSTEM FOR PRODUCING LOW-OXYGENATE OLEFIN FLOWS - A process and a plant for producing an olefin stream from a hydrocarbon mixture feed stream, wherein the olefin stream is depleted as regards its content of oxygen-containing organic compounds (oxygenates) as compared to the feed stream. The hydrocarbon mixture feed stream is charged to a separation column operated by a thermal separation process, for example to a distillation column, wherein a material stream enriched in oxygenates is withdrawn via a side outlet and removed from the process. The process according to the invention is particularly useful for processing the product streams obtained in the olefin synthesis by an OTO process. | 03-07-2013 |
20130190547 | PROCESS FOR DEHYDRATION OF ETHANOL INTO ETHYLENE WITH LOW ENERGY CONSUMPTION - A process for dehydration of an ethanol feedstock into ethylene, comprising the vaporization of said ethanol feedstock in a mixture with at least a portion of the recycled purified water stream from heat exchange with the effluent that is obtained from the last reactor. | 07-25-2013 |
20130303819 | Membrane Technology for Use in a Methanol-to-Propylene Conversion Process - Disclosed herein is a methanol-to-propylene (MTP) conversion process that utilizes a membrane separation step to increase the recycle of C | 11-14-2013 |
20130324781 | METHOD FOR PREPARING HIGH PURITY ISOBUTENE USING GLYCOLETHER - Disclosed is a method of preparing isobutene in which high-purity isobutene is separated (prepared) from a C | 12-05-2013 |
20140018593 | PROCESS AND PLANT FOR THE PRODUCTION OF LOW-MOLECULAR OLEFINS - In the production of low-molecular olefins, in particular of ethylene and propylene, an educt stream (O) containing at least one oxygenate and an educt stream (C) containing at least one C | 01-16-2014 |
20140121434 | FLUIDIZED BED REACTOR AND PROCESS FOR PRODUCING OLEFINS FROM OXYGENATES - The present invention provides a fluidized bed reactor and its use for producing olefins from oxygenates, the fluidized bed reactor comprises: a reaction zone located in the lower portion of the fluidized bed reactor and comprising a lower dense phase zone and an upper riser, wherein the dense phase zone and the riser are connected with each other transitionally; a separation zone located in the upper portion of the fluidized bed reactor and comprising a settling chamber, a fast gas-solid separation means, a cyclone and a gas collecting chamber, wherein the riser extends upwardly into the separation zone and is connected at its outlet with the inlet of the fast gas-solid separation means, the fast gas-solid separation means is connected at its outlet with the inlet of the cyclone via a fast gas passage, the cyclone is connected at its outlet with the gas collecting chamber, and the gas collecting chamber is located below the reactor outlet and connected therewith; and a catalyst recycle line for recycling the catalyst from the settling chamber back to the dense phase zone, a catalyst withdrawl line for withdrawing the deactivated catalyst from the settling chamber and/or the dense phase zone to the catalyst regeneration means, and a catalyst return line for returning the regenerated catalyst from the catalyst regeneration means to the dense phase zone. | 05-01-2014 |
20140155669 | ADSORBENT CATALYTIC NANOPARTICLES AND METHODS OF USING THE SAME - The present invention provides an adsorbent catalytic nanoparticle including a mesoporous silica nanoparticle having at least one adsorbent functional group bound thereto. The adsorbent catalytic nanoparticle also includes at least one catalytic material. In various embodiments, the present invention provides methods of using and making the adsorbent catalytic nanoparticles. In some examples, the adsorbent catalytic nanoparticles can be used to selectively remove fatty acids from feedstocks for biodiesel, and to hydrotreat the separated fatty acids. | 06-05-2014 |
20140179971 | CATALYST FOR THE CONVERSION OF OXYGENATES TO OLEFINS AND A PROCESS FOR PREPARING SAID CATALYST - A catalyst for the conversion of oxygenates, such as alcohols or ethers, to olefins consists essentially of a selected SUZ-4 zeolite that has a Si/Al ratio of at least 20, preferably between 20 and 500, especially between 20 and 100. The basic SUZ-4 zeolite is prepared in a manner known per se, whereafter the Si/Al ratio is increased to the desired value. The selected SUZ-4 zeolite catalyst of the invention has a longer life time and a better product selectivity than the conventional/standard SUZ-4 zeolite catalysts. | 06-26-2014 |
20140343339 | METHOD FOR OBTAINING OLEFINS FROM FURNACE GASES OF STEEL WORKS - The invention relates to a method for processing furnace gas ( | 11-20-2014 |
20140343340 | DEHYDROXYLATION OF POLYETHER POLYOLS AND THEIR DERIVATIVES USING A HALOGEN-BASED CATALYST - Polyether polyols, derivatives and combinations thereof are converted to olefins under reductive or non-reductive dehydroxylation conditions, in the presence of a halogen-based catalyst. Derivatives include polyether polyols incorporated in polyurethanes. The process includes gas pressure from 1 psig (˜6.89 KPa) to 2000 psig (˜13.79 MPa), a temperature from 50° C. to 250° C., a liquid reaction medium, and a molar ratio of the starting material to halogen atoms from 1:10 to 100:1. | 11-20-2014 |
20140357920 | IODINE-BASED CATALYST FOR REDUCTIVE DEHYDROXYLATION OF VICINAL POLYOLS TO OLEFINS - Olefins are produced by the reductive dehydroxylation of vicinal polyols or esters thereof, or a combination thereof, in a liquid reaction medium, under a hydrogen atmosphere, at a temperature from 50° C. to 250° C., in the presence of a halogen-based, preferably iodine-based, catalyst. Examples of the catalyst, which may be included independently or generated in situ, are iodine (I | 12-04-2014 |
20140357921 | DEHYDROXYLATION OF CRUDE ALCOHOL STREAMS USING A HALOGEN-BASED CATALYST - Crude alcohol streams are converted to olefins under reductive or non-reductive dehydroxylation conditions, in the presence of a halogen-based catalyst. The process includes autogenous gas pressure or a gas pressure from 1 psig (˜6.89 KPa) to 2000 psig (˜13.79 MPa), a temperature from 50° C. to 250° C., a liquid reaction medium, and a molar ratio of alcohol to halogen from 1:10 to 100:1. | 12-04-2014 |
20140371502 | OLEFIN PRODUCTION METHOD - The invention has objects of providing an olefin production method which can produce an olefin with high efficiency by the dehydration reaction of an alcohol even in the presence of a ketone without the occurrence of side reactions such as the Aldol condensation of the ketone, as well as providing an olefin production method which can produce an olefin with high activity and high selectivity in a single reaction step by directly reacting a corresponding ketone and hydrogen. The former olefin production method of the invention produces an olefin from an alcohol using a silica gel (A) as a dehydration catalyst which is obtained by bringing a silica gel (X) prepared from an alkyl orthosilicate into contact with a water-soluble aluminum compound and calcining the contact product or is obtained from a wet-process silica gel (Y) prepared from an alkali silicate and which contains an aluminum compound at 10 to 1000 ppm in terms of aluminum element as well as an alkali metal and an alkaline earth metal at a total of 0 to 350 ppm. The latter olefin production method produces an olefin from a ketone and hydrogen in a single reaction step in the presence of the silica gel (A) and a silver-containing inorganic substance (B). | 12-18-2014 |
20140378729 | REDUCTIVE DEHYDROXYLATION OF VICINAL POLYOLS TO OLEFINS USING AN IODINE-BASED CATALYST HAVING ENHANCED SOLUBILITY - Olefins may be produced by the reductive dehydroxylation of vicinal polyols and/or their respective esters, in an aqueous reaction medium, under a hydrogen atmosphere, under suitable conditions, and in the presence of a halogen-based, preferably iodine-based, catalyst, wherein a solubility enhancing agent is employed to increase the solubility of the iodine-based catalyst in the aqueous reaction medium. | 12-25-2014 |
20140378730 | NON-REDUCTIVE DEHYDROXYLATION OF VICINAL COMPOUNDS TO OLEFINS USING A HALOGEN-BASED CATALYST - Olefms may be produced by the non-reductive dehydroxylation of vicinal polyols and/or their respective esters, in a liquid reaction medium, under a substantially non- reductive atmosphere, in the presence of a halogen-based, preferably iodine-based, catalyst. The reaction medium may be aqueous, non- aqueous, or a combination thereof, and may in some embodiments include a solubility enhancing agent. | 12-25-2014 |
20150018591 | Method of Converting Oxygenates to Olefins - A method of converting an oxygenate comprising feedstock to olefins comprising: feeding an oxygenate comprising feedstock into a reactor containing an oxygenate to olefins conversion catalyst; contacting the feedstock with the catalyst at oxygenate conversion conditions to produce olefins; removing an effluent comprising the olefins from the reactor; passing the effluent through a compression section to form a compressed effluent; and adding methane to the compression section. | 01-15-2015 |
20150018592 | DIRECT SYNTHESIS OF DME AT EQUILIBRIUM - The invention relates to a process for production of DME ( | 01-15-2015 |
20150025288 | Process for the Dehydration of Aqueous Bio-Derived Terminal Alcohols to Terminal Alkenes - A method and apparatus for dehydrating bio-1-alcohols to bio-1-alkenes with high selectivity. The bio-1-alkenes are useful in preparing high flashpoint diesel and jet biofuels which are useful to civilian and military applications. Furthermore, the bio-1-alkenes may be converted to biolubricants useful in the transporation sector and other areas requiring high purity/thermally stable lubricants. | 01-22-2015 |
20150353440 | PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT FROM AN OXYGENATE - The invention relates to process for the preparation of an olefinic product comprising ethylene and/or propylene from an oxygenate, the process comprising the following steps: a) an oxygenate conversion step wherein a gaseous effluent comprising olefins and a water-soluble oxygenate is obtained; b) separation of water from the effluent; c) compression of the effluent; d) acid gas removal from the compressed gaseous effluent obtained in step c), wherein the compressed gaseous effluent is treated with a caustic solution in a caustic tower; and e) separating the olefinic product from the gaseous effluent treated in step d), wherein, in a final stage in the caustic tower, water-depleted compressed gaseous effluent is treated with a water stream that is essentially free of water-soluble oxygenate and a spent water stream comprising caustic and water-soluble oxygenate is obtained, which spent water stream is withdrawn from the process. | 12-10-2015 |
20150353443 | PROCESS FOR PURIFICATION OF CO2 IN AN ETHYLENE STREAM OBTAINED FROM THE DEHYDRATION OF ETHANOL - Process for the production of ethylene from an ethanol feedstock that comprises these stages:
| 12-10-2015 |
20160039725 | Process for Starting Up a Fluidized Catalytic Reaction Apparatus Used for Producing Lower Olefins - Disclosed is a process for starting up fluidized reaction apparatus which are used for producing lower olefins from methanol or/and dimethyl ether. Said process includes after heating the catalyst bed of circulating fluidized catalytic reaction apparatus to above 200° C. or 300° C. by using a starting-up auxiliary heat source, feeding methanol or dimethyl ether raw materials to a reactor, whereby heat released by the reaction makes the temperature of the reaction system apparatus increase quickly to a designed temperature, consequently making the system reach the normal operation state rapidly. Said process is suitable for starting up an exothermic fluidized catalytic reaction apparatus and can simplify the apparatus and operation, accordingly lowering the cost. | 02-11-2016 |
20160168044 | CONVERTING GLYCEROL TO PROPYLENE | 06-16-2016 |