Class / Patent application number | Description | Number of patent applications / Date published |
585826000 | With specified sorbent rehabilitation procedure or agent, e.g., desorbent, etc. | 27 |
20090149688 | Purging of regenerated adsorbent from an oxygenate removal unit - The processes and systems disclosed herein relate to the removal of contaminants from the effluent of an oxygenate removal unit (ORU). More particularly, the processes and systems disclosed herein relate to the removal of contaminants resulting from the regeneration of adsorbers in an ORU. Processes and systems are provided for regeneration of an adsorber in an oxygenate removal unit comprising: (a) providing an oxygenate removal unit comprising at least one adsorber, wherein the at least one adsorber comprises a feed end and an effluent end; (b) passing a liquid hydrocarbon feedstock to the feed end of the at least one adsorber and removing an effluent stream from the effluent end of the adsorber; (c) isolating the at least one adsorber for regeneration by terminating passage of the liquid hydrocarbon feedstock to the feed end of the adsorber; (d) removing substantially all of the effluent stream from the adsorber; (e) regenerating the adsorber with a regeneration gas; (f) refilling the adsorber with an inventory liquid; and (g) purging the regenerated adsorber with a slipstream of liquid hydrocarbon feedstock to displace the inventory liquid. | 06-11-2009 |
20100056840 | Process for Hydrocarbon Conversion With On-Line Solid Particulate Material Removal - This invention relates to a process for converting a hydrocarbon feedstock, comprising the steps of (A) feeding the feedstock to a reactor or adsorption unit; (B) contacting the feedstock in the reactor or adsorption unit with a solid particulate material useful for converting the feedstock under conversion conditions; (C) withdrawing converted feedstock from the reactor; and (D) removing, under the conversion conditions for a fractional time of step (B), at least a portion of the solid particulate material while the feedstock is being fed to the reactor or adsorption unit, wherein the portion is more than 0.1 wt. % of the solid particulate material in the reactor or adsorption unit and wherein the fractional time is less than 95% of the time of step (B). | 03-04-2010 |
20100069696 | PROCESS FOR SEPARATING PROPYLENE MIXED WITH PROPANE BY ADSORPTION IN A SIMULATED MOVING BED - A process for separating propylene mixed with propane by adsorption in a simulated moving bed is described. The process operates in the gaseous phase or in the liquid phase, and it uses a 13X faujasite-type zeolite as adsorbent solid and butene-1 or isobutane or any mixture of these 2 components as desorbent. | 03-18-2010 |
20100305381 | Parex Unit Feed - A process for separating a product from a multicomponent feedstream to an adsorption apparatus or system. The apparatus or system may comprise a moving-bed or a simulated moving-bed adsorption means. The product comprises at least one organic compound, such as an aryl compound with alkyl substitutes. In embodiments the conduits used to supply the feedstream to the apparatus or system are flushed with media of multiple grades. In embodiments the process achieves improvements in one or more of efficiency of adsorption separation, capacity of adsorption apparatus systems, and purity of product attainable by adsorption process. | 12-02-2010 |
20110077448 | Energy Efficiency in Adsorptive Separation - The present process comprises a means for energy savings in a process pump by combining the pump with a power-recovery turbine. The invention is particularly useful in the separation of a desired product from a mixture of components using simulated-moving-bed adsorption associated with a large circulating stream with a power-recovery turbine feature for conservation of energy relative to the known art. The improvement is particularly applicable to a process for the separation of para-xylene from mixed C | 03-31-2011 |
20140179975 | SPLIT-SHELL RAFFINATE COLUMNS AND METHODS FOR USE IN CONTINUOUS ADSORPTIVE SEPARATION PROCESSES - A split-shell column includes a raffinate column portion for separating a raffinate material from a desorbent material and a desorbent rerun column portion for separating heavy contaminants from the desorbent material. A feed to the desorbent rerun column portion is provided from the desorbent material in the raffinate column. The desorbent rerun column portion occupies a portion of a lower end of the split-shell column and is thermally separated from the raffinate column portion. | 06-26-2014 |
20160122671 | METHOD FOR EXTRACTING NATURAL GAS LIQUIDS FROM NATURAL GAS USING AN ADSORBENT MEDIA COMPRISING A PARTIALLY PYROLIZED MACROPOROUS POLYMER - A method is disclosed for the separation of ethane and heavier hydrocarbons or propane and heavier hydrocarbons from natural gas to provide a methane-rich natural gas stream and less volatile natural gas liquids (NGLs). This method provides for passing a natural gas feedstream though a regenerable adsorbent media which adsorbs the NGLs to provides the methane rich natural gas product. The regenerable adsorbent media of the present invention is a pyrolized macroporous polymer adsorbent media. | 05-05-2016 |
20160136614 | METHOD COMPRISING A MICROWAVE HEATING SYSTEM FOR REGENERATING ADSORBENT MEDIA USED FOR EXTRACTING NATURAL GAS LIQUIDS FROM NATURAL GAS - A method is disclosed for the separation of ethane and heavier hydrocarbons or propane and heavier hydrocarbons from natural gas to provide a methane-rich natural gas stream and less volatile natural gas liquids (NGLs). This method provides for the use of a regenerable adsorbent media which is regenerated by a microwave heating system. Said regeneration step may be operated as a batch process, a semi-continuous process, or a continuous process. | 05-19-2016 |
20160145517 | METHOD FOR EXTRACTING NATURAL GAS LIQUIDS FROM NATURAL GAS USING AN ADSORBENT MEDIA COMPRISING A CROSS-LINKED MACROPOROUS POLYMER - A method is disclosed for the separation of ethane and heavier hydrocarbons or propane and heavier hydrocarbons from natural gas to provide a methane-rich natural gas stream and less volatile natural gas liquids (NGLs). This method provides for passing a natural gas feedstream though a regenerable adsorbent media which adsorbs the NGLs to provides the methane rich natural gas product. The regenerable adsorbent media of the present invention is a cross-linked macroporous polymeric adsorbent media. | 05-26-2016 |
20170233669 | TEMPERATURE CONTROLLED ADSORPTION PROCESS FOR RECOVERING CONDENSABLE COMPONENTS FROM A GAS STREAM | 08-17-2017 |
585827000 | Cyclic sorbate | 16 |
20090247806 | Simulated Countercurrent Adsorptive Separation Process - A process is described for the separation of a first chemical compound from a liquid feed stream comprising at least first and second chemical compounds by simulated countercurrent adsorptive separation. In the process, the feed stream and a liquid desorbent stream are passed into at least one multi-bed adsorbent chamber at two different points via different transfer lines and an extract stream rich in the first chemical compound and a raffinate stream depleted in the first chemical compound are removed from the adsorbent chamber at two different points by two additional transfer lines. In addition, the contents of the transfer line which has just been used to supply the desorbent stream are flushed into the adsorbent chamber at a point along the chamber between the transfer line just used to supply the desorbent stream and the transfer line just used to withdraw the raffinate. | 10-01-2009 |
585828000 | Aromatic separated from other aromatic | 15 |
20090326310 | ADSORBENT AND PROCESS FOR THE SEPARATION OF META-XYLENE FROM AROMATIC HYDROCARBONS - Adsorbents and methods for the adsorptive separation of meta-xylene from a mixture containing at least one other C | 12-31-2009 |
20090326311 | ADSORBENTS WITH IMPROVED MASS TRANSFER PROPERTIES AND THEIR USE IN THE ADSORPTIVE SEPARATION OF PARA-XYLENE - Adsorbents and methods for the adsorptive separation of para-xylene from a mixture containing at least one other C | 12-31-2009 |
20100113854 | AGGLOMERATED ZEOLITIC ADSORBENTS, THEIR METHOD OF PREPARATION AND THEIR USES - The present invention relates to agglomerated zeolitic adsorbents based on zeolite X with an Si/Al ratio such that 1.1505-06-2010 | |
20120004491 | Adsorptive Process for Separation of C8 Aromatic Hydrocarbons - A method for separating a xylene from a feed mixture by contacting the feed mixture with a bed of adsorbent comprising metal organic framework crystals selective to the xylene. | 01-05-2012 |
20130158335 | SYSTEM AND PROCESS FOR RECOVERING PRODUCTS USING SIMULATED-MOVING-BED ADSORPTION - A process according to various approaches includes flushing residual fluid within an intermediate transfer line of a purification zone between a feed stream transfer line and the extract stream transfer line away from the adsorptive separation chamber to remove at least a portion of the residual fluid from the intermediate transfer line. The process may include directing the residual fluid flushed from the intermediate transfer line to another intermediate transfer line of the purification zone to flush residual fluid of the other transfer line into the purification zone for separation of the preferentially adsorbed component from the non-preferentially adsorbed component present in the other transfer line residual fluid. | 06-20-2013 |
20130331633 | Parex Unit Feed - A process for separating a product from a multicomponent feedstream to an adsorption apparatus or system. The apparatus or system may comprise a moving-bed or a simulated moving-bed adsorption means. The product comprises at least one organic compound, such as an aryl compound with alkyl substitutes. In embodiments the conduits used to supply the feedstream to the apparatus or system are flushed with media of multiple grades. In embodiments the process achieves improvements in one or more of efficiency of adsorption separation, capacity of adsorption apparatus systems, and purity of product attainable by adsorption process. | 12-12-2013 |
20140155672 | PROCESS AND APPARATUS FOR SIMULATED COUNTER-CURRENT CHROMATOGRAPHIC SEPARATION FOR HIGH-PRODUCTIVITY PRODUCTION OF PARAXYLENE - The present invention describes a process for the separation of xylenes in simulated counter-current utilising at least one adsorber with a limited cumulated total height (Hcu) of adsorbent and a superficial velocity (Vsl) of less than 2 cm/s. | 06-05-2014 |
20140155673 | PROCESS AND DEVICE FOR SIMULATED-COUNTERCURRENT CHROMATOGRAPHIC SEPARATION FOR THE PRODUCTION OF METAXYLENE WITH HIGH YIELD - This invention describes a process for separation of xylenes for the purpose of the production of high-purity metaxylene, a simulated countercurrent process using at least one adsorber with a limited cumulative total level (Hcu) of adsorbent at a surface velocity (Vsl) that is less than 2 cm/s. | 06-05-2014 |
20140155674 | PROCESS AND DEVICE FOR SEPARATION BY SIMULATED MOVING BED ADSORPTION - The present invention relates to a process for separating isomers by simulated moving bed (SMB) adsorption, comprising separating the raw materials comprising isomers by SMB adsorption, said SMB comprising many adsorption beds each of which is equipped with grids, each of the grids being equipped with the feedstock inlet and outlet pipeline of the bed, the feedstock charged into and discharged from SMB at least comprising feedstocks, desorbent, extract, and raffinate, the extract being enriched with the target product, characterized in that the extract is used as a flushing liquid and respectively charged to first or second bed at the upstream of the feedstock charging position and to one of second to fourth beds at the downstream of the extract withdrawing position. Such process is used for separation of C | 06-05-2014 |
20140288345 | System and Process for Flushing Residual Fluid from Transfer Lines in Simulated Moving Bed Adsorption - A process according to various approaches includes flushing an intermediate transfer line between a raffinate stream transfer line and a desorbent stream transfer line away from the adsorptive separation chamber to remove residual fluid including desorbent from intermediate transfer line. The process may include directing the residual fluid flushed from the intermediate transfer line to a recycle stream to introduce the residual fluid into the adsorptive separation chamber. | 09-25-2014 |
20140371510 | PRODUCT RECOVERY FROM ADSORPTION-SEPARATION PURGE FLUIDS - Purge fluid from a vessel head in an adsorption process is distributed to recovery processes according to the purity of product contained in the fluid. Extract-rich fluid thus is routed directly to recovery of the extract product. Distribution preferably is determined by internal positioning of feed, desorbent and product streams in the adsorption vessel. | 12-18-2014 |
20150105600 | ADSORBENTS FOR THE SEPARATION OF PARA-XYLENE FROM C8 ALKYL AROMATIC HYDROCARBON MIXTURES, METHODS FOR SEPARATING PARA-XYLENE USING THE ADSORBENTS AND METHODS FOR MAKING THE ADSORBENTS - Embodiments of adsorbents for separating para-xylene from a mixture of C | 04-16-2015 |
20150376093 | SIMULATED MOVING BED SEPARATORS AND METHODS FOR ISOLATING A DESIRED COMPONENT - A simulated moving bed separator and methods for isolating a desired component are provided. A method includes removing an extract from an extract bed of the simulated moving bed separator, where the extract includes the desired component, and where the simulated moving bed separator includes a plurality of adsorbent beds circularly coupled together. The simulated moving bed separator also includes a distributor and a plurality of conduits fluidly coupling the distributor to the adsorbent beds. The adsorbent beds include the extract bed and a secondary flush bed downstream from the extract bed. A secondary flush conduit is flushed with a secondary flush fluid while removing extract from the extract bed, where the secondary flush conduit fluidly couples the secondary flush bed with the distributor. The flush fluid includes the extract. | 12-31-2015 |
20160009614 | METHOD FOR SEPARATING XYLENES IN A SIMULATED MOVING BED BY MEANS OF A ZEOLITIC ADSORBENT SOLID HAVING A PARTICLE SIZE OF BETWEEN 150 AND 500 MICRONS | 01-14-2016 |
20160145174 | Xylene Separation Process and Apparatus - A simulated moving bed process using dual, parallel rotary valves configured or plumbed to be operated independently in which the step times of the rotary valves are staggered. In embodiments, the second rotary valve is programmed to step about halfway through the step time of the first rotary valve. Staggering the step time of the parallel rotary valves, rather than utilizing simultaneous stepping, results in increased net composite paraxylene concentration of the extract stream, allowing for increased capacity of the simulated moving bed process and/or reduced energy consumption. | 05-26-2016 |
585829000 | Unsaturated sorbate | 1 |
20140148634 | METHOD AND APPARATUS FOR RECOVERING ETHYLENE FROM FLUIDIZED CATALYTIC CRACKING (FCC) OFF-GAS - A method and apparatus for concentrating and recovering ethylene from the off-gas from an apparatus which produces gasoline, propylene and the like by fluidized catalytic cracking (FCC) of heavy oils such as atmospheric residue, generated in a crude oil refining process, is provided. The method and apparatus can reduce the amount of ethylene rinse in the subsequent ethylene displacement desorption process by increasing the ethylene purity of a raw material gas and reducing the concentration of weakly adsorbing components in the raw material gas and can reduce the loss of a desorbent during a distillation process for separating the desorbent from the weakly adsorbing components. Thus, ethylene can be recovered from the off-gas from fluidized catalytic cracking of heavy oils at high concentration and low cost. | 05-29-2014 |