| Patent application number | Description | Published |
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| 20090105429 | PROCESS FOR THE PREPARATION OF AN OLEFIN - Process for the preparation of an olefin comprising reacting an oxygenate feed and an olefinic co-feed in a reactor in the presence of a zeolite to obtain a reaction product containing one or more olefins; wherein the olefinic co-feed is at least partially obtained ex-situ during a first phase and at least partially obtained in-situ during a subsequent second phase. | 04-23-2009 |
| 20090105434 | PROCESS FOR THE PREPARATION OF PROPYLENE - Process for the preparation of propylene, wherein a diluted olefinic hydrocarbon feed, comprising in the range of 1 to 99 vol % of olefinic hydrocarbon feed and 1-99 vol % of one or more diluents, is contacted with a solid zeolite catalyst at a Gas Hourly Space Velocity, as measured at standard temperature and pressure of 23° C. and 1 bar, of at least 15,000 ml diluted olefinic hydrocarbon feed/gram zeolite catalyst/hour. | 04-23-2009 |
| 20090118551 | Integrated Separation and Preparation Process - Integrated separation and preparation process comprising a gas separation process wherein a first component is separated from a mixture of components by diffusion of the first component through a porous partition into a stream of sweeping component; and a preparation process wherein the sweeping component is used as feed. Separation unit and device for use in such a process and industrial set-up for use in such a process. | 05-07-2009 |
| 20090126259 | PROCESS TO PREPARE METHANOL AND/OR DIMETHYLETHER - A process to prepare methanol and/or dimethylether from a solid carbonaceous feedstock comprising the steps of
| 05-21-2009 |
| 20090187056 | PROCESS FOR THE PREPARATION OF AN OLEFIN - Process for the preparation of an olefin comprising contacting a diluted olefinic hydrocarbon feed, containing an oxygenate feed, an olefinic co-feed and one or more diluents, with a solid zeolite catalyst to obtain a reaction product containing one or more olefins, and wherein the diluted feed is contacted with the solid zeolite catalyst at a Gas Hourly Space Velocity, as measured at standard temperature and pressure, of at least 10,000 ml diluted olefinic hydrocarbon feed/gram zeolite catalyst/hour. | 07-23-2009 |
| 20090187057 | PROCESS FOR THE PREPARATION OF C5 AND/OR C6 OLEFIN - Process for the preparation of C | 07-23-2009 |
| 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 |
| 20090259087 | PROCESS FOR THE PREPARATION OF PROPYLENE AND INDUSTRIAL PLANT THEREOF - The present invention provides a process for the preparation of propylene from a hydrocarbon feed containing one or more C | 10-15-2009 |
| 20090270669 | PROCESS FOR THE PREPARATION OF PROPYLENE FROM A HYDROCARBON FEED - Process for the preparation of propylene from a hydrocarbon feed, wherein the hydrocarbon feed is an essentially olefinic hydrocarbon feed comprising C6 olefins and wherein the hydrocarbon feed is contacted with a one-dimensional zeolite having 10-membered ring channels and a silica to alumina ratio (SAR) in the range from 10 to 200. | 10-29-2009 |
| 20100261943 | PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT - Process for the preparation of an olefinic product, which process comprises contacting a reaction mixture comprising an oxygenate feedstock and an olefinic component with an oxygenate conversion catalyst comprising a molecular sieve having one-dimensional 10-membered ring channels, in a flow-through reactor unit defining a flow trajectory for fluids towards a downstream outlet for an olefinic reaction effluent from the flow-through reactor unit, wherein an olefinic co-feed is added at an upstream olefin feed inlet of the flow-through reactor unit, and wherein oxygenate feedstock is admitted to the reactor such that it is added to the reaction mixture at a plurality of locations along the feed trajectory. | 10-14-2010 |
| 20100268007 | PROCESS FOR CONVERTING AN OXYGENATE INTO AN OLEFIN-CONTAINING PRODUCT, AND REACTOR SYSTEM - A process for converting an oxygenate to an olefin-containing product, wherein oxygenate is contacted with an oxygenate conversion catalyst in a reactor system comprising two or more serially arranged riser reactor stages to obtain a riser reactor effluent from each stage, wherein each riser reactor stage comprises a single riser reactor or a plurality of parallel riser reactors, such that at least part of the riser reactor effluent of a preceding riser reactor stage is fed into a subsequent riser reactor stage, and wherein oxygenate is added to a plurality of the riser reactor stages; and a reactor system comprising two or more serially arranged riser reactor stages wherein the first of the two or more serially arranged riser reactor stages has a smaller total cross-sectional area than at least one of the subsequent riser reactor stages. | 10-21-2010 |
| 20100268009 | CATALYST PARTICLES, PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT, AND PROCESS FOR THE PREPARATION OF AN OXYGENATE CONVERSION CATALYST - Catalyst particles comprising a first molecular sieve having one-dimensional 10-membered ring channels, and a second molecular sieve having more-dimensional channels; a process for the preparation of such catalyst particles; and a process for the preparation of an olefinic product, comprising reacting an oxygenate feedstock in a reaction zone in the presence of catalyst particles of the invention. | 10-21-2010 |
| 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 |
| 20100305375 | PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT - Process for the preparation of an olefinic product, which process comprises reacting an oxygenate feedstock and an olefinic co-feed in a reactor in the presence of an oxygenate conversion catalyst comprising a molecular sieve having one-dimensional 10-membered ring channels, and a further molecular sieve having more-dimensional channels, wherein the weight ratio between the one-dimensional molecular sieve and the further molecular sieve is in the range of from 1:1 to 100:1, to prepare an olefinic reaction effluent; separating the olefinic reaction effluent into at least a first olefinic fraction and a second olefinic fraction; recycling at least part of the second olefinic fraction; and recovering at least part of the first olefinic fraction as olefinic product. | 12-02-2010 |
| 20100305377 | PROCESS FOR THE PREPARATION OF AN OLEFIN - An olefin is prepared from an alkyl alcohol in a process, comprising the steps: a) converting the alkyl alcohol into a dialkylether over a first catalyst, to yield a dialkylether product stream containing alkyl alcohol, dialkylether and water; b) separating the dialkylether product stream into a vaporous dialkylether-rich stream and a liquid water-containing stream which water-containing stream comprises at most 5% wt of alkyl alcohol, based on the total weight of water and alkyl alcohol; and c) converting the vaporous dialkylether-rich stream to an olefin over a second catalyst, wherein the dialkylether product stream is enriched with a base. | 12-02-2010 |
| 20110112314 | PROCESS FOR PRODUCING OLEFINS - The present invention provides a process for producing olefins, comprising:
| 05-12-2011 |
| 20110112344 | PROCESS AND INTEGRATED SYSTEM FOR THE PREPARATION OF A LOWER OLEFIN PRODUCT - A process for the preparation of an olefin product comprising ethylene and/or propylene, which process comprises the steps of
| 05-12-2011 |
| 20110112345 | PROCESS FOR THE PREPARATION OF A LOWER OLEFIN PRODUCT - A process for the preparation of an olefin product comprising ethylene and/or propylene, which process comprises the steps of | 05-12-2011 |
| 20110137053 | PROCESS FOR PRODUCING ETHYLENE OXIDE - The present invention provides a process for producing ethylene oxide, comprising:
| 06-09-2011 |
| 20110137095 | PROCESS FOR PRODUCING OLEFINS - The present invention provides a process for producing olefins, comprising:
| 06-09-2011 |
| 20110160509 | PROCESS FOR THE PREPARATION OF AN OLEFIN - An olefin is prepared from an alkyl alcohol in a process which comprises the steps: a) converting the alkyl alcohol into a dialkylether over a first catalyst, to yield a hot dialkylether product stream containing alkyl alcohol, dialkylether and water; b) cooling the hot dialkylether product stream at least partly by indirect heat exchange with a cold dialkylether product stream to below the dew point of water at the prevailing conditions to obtain a gas-liquid mixture; c) separating the obtained mixture into a liquid water-containing stream and a vaporous dialkylether-rich stream; d) subjecting at least part of the vaporous dialkylether-rich stream, as the cold dialkylether product stream in step b), to heat exchange with the hot dialkylether product stream, to yield a heated dialkylether-rich feed; and e) converting the heated dialkylether-rich feed to an olefin over a second catalyst. | 06-30-2011 |
| 20110288357 | PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT - A process for the preparation of an olefinic product, the process comprising reacting an oxygenate feedstock in a reactor in the presence of catalyst comprising an aluminosilicate having one-dimensional 10 membered ring channels, to produce the olefinic product, wherein before reacting the oxygenate feedstock to produce the olefinic product, the acidity of the aluminosilicate has been increased by at least 5% by treating the aluminosilicate with an aqueous solution comprising at least one of a chelating agent and an acid, wherein the increase in acidity is based on the acidity of the aluminosilicate before treatment. | 11-24-2011 |
| 20110295049 | CATALYST RETURN APPARATUS, AND PROCESS FOR REACTING A FEEDSTOCK - A catalyst return apparatus is disclosed as well as a riser reactor system comprising the conduit apparatus and a riser reactor, the conduit apparatus comprising a catalyst return conduit and at least two flow control devices in series, each flow control device arranged to control the flow of fluid through the conduit, wherein the length of the catalyst return conduit is more than 20 m. A process for reacting a feedstock in a riser reactor system comprising a riser reactor, the catalyst return apparatus and, and a stage vessel, the process comprising: holding a fluid comprising the catalyst in the at least one stage vessel for a residence time of at least 10 seconds. | 12-01-2011 |
| 20110306814 | RISER REACTOR SYSTEM AND A PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT - A riser reactor system comprising a riser reactor and a catalyst feed device for fluidized catalyst, the riser reactor having a riser interior in which catalyst is flowing during normal operation, and the feed device comprising an annular trough surrounding the riser interior, the annular trough having an up-stream opening for receiving fluidized catalyst, and at least one substantially circumferential downstream opening providing fluid communication between the trough and the riser interior; and a process for the preparation of an olefinic product using a riser reactor system as claimed in any one of the preceding claims, the process comprising reacting an oxygenate feedstock in the presence of an oxygenate conversion catalyst under oxygenate-to-olefin conversion conditions in the riser reactor system, to obtain the olefinic product. | 12-15-2011 |
| 20110313224 | PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT AND AN OXYGENATE CONVERSION CATALYST - A process for the preparation of an olefinic product in the presence of a catalyst comprising an aluminosilicate having one-dimensional 10-membered ring channels and a silica-to-alumina-ratio of less than 170, and at least one Group IB metal at a metal loading of between 0.1 and 10 wt % of the aluminosilicate, the process comprising reacting an oxygenate feedstock under oxygenate conversion conditions to produce a reaction, product comprising ethylene and/or propylene. An oxygenate conversion catalyst is also claimed. | 12-22-2011 |
| 20120083640 | PROCESS FOR THE MANUFACTURE OF A FORMULATED OXYGENATE CONVERSION CATALYST, FORMULATED OXYGENATE CONVERSION CATALYST AND PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT - The present invention provides a process for the manufacture of a formulated oxygenate conversion catalyst, the process comprising: —treating with a phosphorus containing compound a first molecular sieve comprising aluminosilicate and a second molecular sieve, different from the first molecular sieve, the second molecular sieve having more-dimensional channels; and—combining the first molecular sieve, the second molecular sieve and a matrix material; wherein the catalyst is not treated with a phosphorus containing compound after combination of the molecular sieves with the matrix material. In a further aspect the invention provides a formulated oxygenate conversion catalyst and a process for the preparation of an olefinic product. | 04-05-2012 |
| 20120101322 | OXYGENATE CONVERSION CATALYST, PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT, AND PROCESS FOR THE PREPARATION OF AN OXYGENATE CONVERSION CATALYST - An oxygenate conversion catalyst comprising both a first molecular sieve having one-dimensional 10-membered ring channels, and a second molecular sieve having more-dimensional channels, wherein the second molecular sieve comprises MEL-type aluminosilicate; a process for the preparation of an olefinic product in the presence of the oxygenate conversion catalyst, and a process for the preparation of an oxygenate conversion catalyst. | 04-26-2012 |
| 20120142990 | PROCRESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT, PROCESS FOR THE MANUFACTURE OF AN OXYGENATE CONVERSION CATALYST AND AN OXYGENATE CONVERSION CATALYST - A process for the preparation of an olefinic product in the presence of an oxygenate conversion catalyst, the catalyst comprising a molecular sieve, wherein the molecular sieves comprises a SAPO-type silicoaluminophosphate, MFI-type aluminosilicate and/or MEL-type aluminosilicate, and a sulphur species at an elemental sulphur loading of at least 0.05 wt % based on total catalyst, the process comprising reacting an oxygenate feedstock under oxygenate conversion conditions to produce an olefinic reaction product. Further a process for the manufacture of an oxygenate conversion catalyst, and an oxygenate conversion catalyst comprising a molecular sieve having n-membered ring channels wherein n is 10 or less, and a sulphur species. | 06-07-2012 |
| 20120184791 | PROCESS FOR THE MANUFACTURE OF A FORMULATED OXYGENATE CONVERSION CATALYST, FORMULATED OXYGENATE CONVERSION CATALYST AND PROCESS FOR THE PREPARATION OF AN OLEFINIC PRODUCT - The present invention provides a process for the manufacture of a formulated oxygenate conversion catalyst, the process comprising combining a first molecular sieve comprising aluminosilicate, a second molecular sieve, different from the first molecular sieve, the second molecular sieve having more-dimensional channels, and a matrix material; and, treating the catalyst with a phosphorus containing compound after combination of the molecular sieves with the matrix material. In a further aspect the invention provides a formulated oxygenate conversion catalyst and a process for the preparation of an olefinic product. | 07-19-2012 |
| 20130066032 | PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE - The present invention provides a process for preparing ethylene and/or propylene, comprising providing a hydrocarbon stream, comprising C4+ normal and C4+ iso-olefins; subjecting the hydrocarbon stream to an etherification process wherein the iso-olefins are converted with alcohol to an tert-alkyl ether, and retrieving a first etherification product stream; separating the first etherification product stream into a first ether-enriched stream and an iso-olefin-depleted hydrocarbon stream; converting the normal olefins in the iso-olefin-depleted hydrocarbon stream to ethylene and/or propylene with a molecular sieve-comprising catalyst and retrieving an olefinic product; decomposing the tert-alkyl ether in the ether-enriched stream into alcohol and an iso-olefin; isomerising the obtained iso-olefins to normal-olefins and retrieving an normal-olefin-enriched hydrocarbon stream; and converting the normal olefins in the normal-olefin-enriched hydrocarbon stream to ethylene and/or propylene by contacting the normal-olefin-enriched hydrocarbon stream with a molecular sieve-comprising catalyst and retrieving an olefinic product. | 03-14-2013 |
| 20130096328 | PROCESS FOR PREPARING AN EPOXIDE FROM AN OXYGENATE - The invention relates to an integrated process for preparing an epoxide from an oxygenate, wherein the production of a lower olefin from the oxygenate and the subsequent epoxidation of the lower olefin is combined and wherein isobutene, a by-product of the lower olefin production, is converted into a hydroperoxide that is used for the conversion of the lower olefin into the corresponding epoxide. | 04-18-2013 |
| 20130096329 | PROCESS FOR PREPARING AN EPOXIDE FROM AN OXYGENATE - The invention relates to an integrated process for preparing an epoxide from an oxygenate, wherein the oxygenate is converted into a lower olefin and the lower olefin is subsequently epoxidised, and wherein isobutane obtained after hydrogenation and subsequent normal/iso separation of C4 hydrocarbons obtained as by-product of the oxygenate conversion, is converted into a hydroperoxide that is used for the conversion of the lower olefin into the corresponding epoxide. | 04-18-2013 |
| 20130096352 | PROCESS FOR CONVERTING AN ALKYL TERT-ALKYL ETHER INTO AN ALKANOL AND AN ISO-ALKANE - The invention relates to a process for converting an alkyl tert-alkyl ether into an alkanol and an iso-alkane wherein the alkyl tert-alkyl ether is contacted with a hydrocracking catalyst in the presence of hydrogen under hydrocracking process conditions. | 04-18-2013 |
| 20130165716 | INTEGRATED PROCESS FOR THE PREPARATION OF AN AROMATIC PRODUCT - A process preparing an aromatic product comprising xylene, the process comprising: a) cracking a feedstock to obtain a cracker effluent comprising olefins and aromatics; b) converting an oxygenate feedstock in an oxygenate-to-olefins conversion system, comprising a reaction zone in which an oxygenate feedstock is contacted with a catalyst to obtain a conversion effluent comprising benzene, toluene, xylene and olefins; c) combining at least part of the cracker effluent and at least part of the conversion effluent to obtain a combined effluent, the combined effluent comprising aromatics; d) separating at least a portion of the benzene and/or toluene from the combined effluent to form a benzene and/or toluene stream; e) separating the olefins from the combined effluent; f) separating xylene from the combined effluent to form a xylene stream; and g) recycling at least a part of the benzene and/or toluene streams as recycled aromatics to step b). | 06-27-2013 |
| 20130165725 | PROCESS FOR THE PREPARATION OF AN AROMATIC PRODUCT - A process for the preparation of an aromatic product comprising xylene, which process comprises the steps of: a) converting an oxygenate feedstock in an oxygenate-to-olefins conversion system, comprising a reaction zone in which an oxygenate feedstock is contacted with an oxygenate conversion catalyst under oxygenate conversion conditions, to obtain a conversion effluent comprising benzene, toluene, xylene and olefins; b) separating at least a portion of the benzene and toluene from the conversion effluent to form an aromatics containing stream; c) separating the olefins from the conversion effluent; d) separating xylene from the conversion effluent to produce a xylene product stream; and e) recycling at least a portion of the aromatics containing stream to step a). | 06-27-2013 |
| 20130172627 | PROCESS FOR PREPARING LOWER OLEFINS - The invention is a process for preparing lower olefins comprising: a) steam cracking a paraffinic feedstock to obtain a cracker effluent comprising olefins and saturated and unsaturated C4 hydrocarbons; b) contacting an oxygenate feedstock with a molecular sieve-comprising catalyst, at a temperature in the range of from 350 to 1000° C. to obtain an oxygenate conversion effluent comprising olefins and saturated and unsaturated C4 hydrocarbons; c) subjecting the cracker effluent and the oxygenate conversion effluent to one or more separation steps such that an olefin product stream comprising ethylene and/or propylene, and a stream comprising saturated and unsaturated C4 hydrocarbons are obtained; and d) subjecting part of the stream comprising C4 hydrocarbons from both the cracker effluent and the oxygenate conversion effluent to extractive distillation to obtain a stream enriched in unsaturated C4 hydrocarbons and a stream enriched in saturated C4 hydrocarbons. | 07-04-2013 |
| 20130172644 | PROCESS FOR PREPARING LOWER OLEFINS FROM AN OXYGENATE - The invention relates to a process for preparing lower olefins from an oxygenate, the process comprising: subjecting C4 hydrocarbons obtained in an oxygenate-to-olefins conversion step to extractive distillation to an etherification step to convert isobutene into an alkyl tertiary butyl ether to obtain an isobutene-depleted C4 hydrocarbon stream and alkyl tertiary-butyl ether; | 07-04-2013 |
| 20130172645 | PROCESS FOR PREPARING LOWER OLEFINS FROM AN OXYGENATE - The invention relates to a process for preparing lower olefins from an oxygenate, the process comprising subjecting C4 hydrocarbons obtained in an oxygenate-to-olefins conversion step to extractive distillation to obtain a stream enriched in unsaturated C4 hydrocarbons comprising isobutene and n-butenes, and a stream enriched in saturated C4 hydrocarbons; converting the isobutene in the stream enriched in unsaturated C4 hydrocarbons into an alkyl tertiary butyl ether to obtain an isobutene-depleted unsaturated C4 hydrocarbon stream and alkyl tertiary-butyl ether; and recycling at least part of the isobutene-depleted unsaturated C4 hydrocarbon stream and/or at least part of the alkyl tertiary-butyl ether, optionally after conversion into tertiary butanol and/or isobutene, to the oxygenate-to-olefins conversion step. | 07-04-2013 |
| 20130217934 | PROCESS FOR PRODUCING AROMATIC HYDROCARBONS AND ETHYLENE - The present invention provides a process for producing aromatic hydrocarbons and ethylene, comprising: a. contacting a lower alkane feed comprising at least one of ethane, propane and butane with an aromatic hydrocarbon conversion catalyst within an alkane-to-aromatic zone to obtain at least hydrogen and aromatic reaction products, including at least benzene; b. converting an oxygenate feedstock in an oxygenate-to-olefin zone to obtain olefins, including at least ethylene; wherein at least part of the oxygenate feedstock is obtained by providing at least part of the hydrogen obtained in step a) and a feed containing carbon monoxide and/or carbon dioxide to an oxygenate synthesis zone and synthesizing oxygenates. In another aspect the invention provides an integrated system for aromatic hydrocarbons and ethylene and the use of hydrogen obtained from a process to convert lower alkanes to benzene to produce an oxygenate feed for an oxygenate-to-olefin process. | 08-22-2013 |
| 20130225393 | PROCESS FOR THE REGENERATION OF A CATALYST - Process for the regeneration of an at least partially coked molecular sieve catalyst comprising introducing the at least partially coked catalyst into a regenerator; introducing into the regenerator an oxygen-containing gas to regenerate at least part of the at least partially coked catalyst, thereby producing a gaseous mixture and at least partially regenerated catalyst; separating at least partially regenerated catalyst and at least part of the gaseous mixture; and analysing the composition of the gaseous mixture to control the burning rate of the coke present on the at least partially coked catalyst in the regenerator by adjusting the mass flow rate of the oxygen-containing gas on the basis of the analysis of the gaseous mixture. | 08-29-2013 |
| 20130225394 | PROCESS FOR THE REGENERATION OF A CATALYST - Process for the regeneration of an at least partially coked molecular sieve catalyst comprising introducing the at least partially coked catalyst into a regenerator; introducing into the regenerator an oxygen-containing gas to regenerate at least part of the at least partially coked catalyst, thereby producing a gaseous mixture and at least partially regenerated catalyst; recovering part of the at least partially regenerated catalyst; analysing the at least partially regenerated catalyst to control the burning rate of the coke present on the at least partially coked catalyst in the regenerator by adjusting one or more conditions of the regeneration of the at least partially coked catalyst on the basis of the analysis of the at least partially regenerated catalyst; and separating at least partially regenerated catalyst and at least part of the gaseous mixture as obtained in step (b). | 08-29-2013 |
| 20130225893 | PROCESS FOR THE PREPARATION OF OLEFINS - Process for the preparation of olefins comprising introducing an oxygenate and/or olefinic feed into a reactor; reacting the oxygenate and/or olefinic feed in the reactor in the presence of a molecular sieve catalyst to form a mixture which comprises olefins and at least partially coked catalyst; separating olefins and at least partially coked catalyst; recovering olefins; and controlling the temperature of the oxygenate and/or olefinic feed to be introduced into the reactor on the basis of the temperature of the mixture formed in the reaction and/or the olefins obtained. | 08-29-2013 |
| 20130225894 | PROCESS FOR THE PREPARATION OF OLEFINS - Process for the preparation of olefins, which process comprising introducing an oxygenate and/or olefinic feed through introduction means into a reactor; reacting the oxygenate and/or olefinic feed in the reactor in the presence of a molecular sieve catalyst to form a mixture with a resulting gas superficial velocity which mixture comprises olefins and at least partially coked catalyst; separating olefins and at least partially coked catalyst; recovering olefins; and controlling the gas superficial velocity of the mixture at a predetermined level in the reactor on the basis of the inlet mass gas flow rate of the feed. | 08-29-2013 |
| 20130225896 | PROCESS FOR THE PREPARATION OF OLEFINS - Process for the preparation of olefins comprising reacting an oxygenate and/or olefinic feed in a reactor in the presence of a molecular sieve catalyst to form a mixture which comprises olefins and at least partially coked catalyst;
| 08-29-2013 |
| 20130237713 | PROCESS FOR PREPARING ETHYLENE AND PROPYLENE - The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of contacting a stream comprising C4+ olefins with a zeolite-comprising catalyst to retrieve an olefinic product stream comprising ethylene and/or propylene, and a C4+ hydrocarbon fraction, comprising paraffins, normal olefins and iso-olefins. The C4+ hydrocarbon fraction is subjected to an etherification process with wherein at least part of the iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether and an etherification product stream is retrieved and separated into an ether-enriched stream and an iso-olefin-depleted C4+ hydrocarbon stream. Part of the iso-olefin-depleted C4+ hydrocarbon stream from the process to purge part of the paraffinic C4+ hydrocarbons while another part of the iso-olefin-depleted C4+ hydrocarbon stream is recycled. The tert-alkyl ether in the ether-enriched stream is converted to ethylene and/or propylene by contacting at least part of the ether-enriched stream with a molecular sieve-comprising catalyst. | 09-12-2013 |
| 20130237715 | PROCESS FOR PREPARING ETHYLENE AND PROPYLENE - The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of:
| 09-12-2013 |
| 20130245221 | PROCESS FOR PREPARING ETHYLENE AND PROPYLENE - The present invention provides a process preparing ethylene and propylene, comprising the step of:
| 09-19-2013 |
| 20130245292 | PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE AND AN ISO-OLEFIN-DEPLETED OLEFINIC PRODUCT - The present invention provides a process for preparing ethylene and/or propylene and an iso-olefin-depleted olefinic product, comprising the steps of:
| 09-19-2013 |
| 20130245294 | METHOD FOR START-UP OF AN OXYGENATE-TO-OLEFIN PROCESS - The present invention provides a method for start-up of an Oxygenate-to-Olefins process, which process comprises the steps:
| 09-19-2013 |
| 20140148631 | PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE - The present invention provides a process for preparing ethylene and/or propylene, wherein an oxygenate feedstock is contacted with a zeolite-comprising catalyst at a temperature in the range of from 500 to 700° C. to obtain a reactor effluent comprising ethylene and/or propylene and the oxygenate feedstock is contacted with the catalyst in a riser reactor having a reactor wall defining a flow trajectory towards a downstream outlet for reactor effluent, wherein at least oxygenate feedstock and catalyst are provided at one or more upstream inlets of the riser reactor and wherein C5 olefins are admitted to the riser reactor at one or more of locations along the length of the flow trajectory. The invention further provides a reaction system suitable for preparing ethylene and propylene. | 05-29-2014 |
| 20140187833 | INTEGRATED PROCESS FOR THE PREPARATION OF OLEFINS - The invention provides a process for preparing olefins, comprising: (a) reacting an oxygenate and/or olefinic feed in a first reactor in the presence of a molecular sieve catalyst to form a first effluent comprising olefins; (b) fractionating at least part of the first effluent into an olefinic product fraction comprising ethylene and propylene and an olefinic product fraction comprising olefins containing 4 or more carbon atoms; (c) subjecting a paraffin-containing hydrocarbon feedstock in a second reactor to a steam cracking process to form a second effluent comprising olefins including butadiene; (d) fractionating the second effluent into an olefinic product fraction comprising ethylene and/or propylene and an olefinic product fraction comprising mono-olefins containing 4 or more carbon atoms; and (e) recycling the olefinic product fraction comprising at least part of the ethylene and/or propylene as obtained in step (d) to the reactor in step (a). | 07-03-2014 |
| 20140234178 | CATALYST RETURN APPARATUS AND PROCESS FOR REACTING A FEEDSTOCK - A catalyst return apparatus is disclosed as well as a riser reactor system comprising the conduit apparatus and a riser reactor, the conduit apparatus comprising a catalyst return conduit and at least two flow control devices in series, each flow control device arranged to control the flow of fluid through the conduit, wherein the length of the catalyst return conduit is more than 20 m. A process for reacting a feedstock in a riser reactor system comprising a riser reactor, the catalyst return apparatus and, and a stage vessel, the process comprising: holding a fluid comprising the catalyst in the at least one stage vessel for a residence time of at least 10 seconds. | 08-21-2014 |
| 20140343338 | CATALYST RETURN APPARATUS AND PROCESS FOR REACTING A FEEDSTOCK - A catalyst return apparatus is disclosed as well as a riser reactor system comprising the conduit apparatus and a riser reactor, the conduit apparatus comprising a catalyst return conduit and at least two flow control devices in series, each flow control device arranged to control the flow of fluid through the conduit, wherein the length of the catalyst return conduit is more than 20 m. A process for reacting a feedstock in a riser reactor system comprising a riser reactor, the catalyst return apparatus and, and a stage vessel, the process comprising: holding a fluid comprising the catalyst in the at least one stage vessel for a residence time of at least 10 seconds. | 11-20-2014 |
