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Browse by Category: Main > Chemistry
Class Information
Number: 585/822
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By contact with solid sorbent > Plural serial sorptions
Description: Subject matter in which an effluent from a sorption step or zone is passed through another sorption zone.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8702974 Desulphurisation process Apr. 22, 2014
8692047 Method of purifying 8-isoprostane Apr. 8, 2014
8685146 Processes and apparatuses for preparing liquified natural gas Apr. 1, 2014
8641906 Method and system for distributing and collecting fluids in a multi-stage column Feb. 4, 2014
8609922 Energy conservation in heavy-hydrocarbon distillation Dec. 17, 2013
8586816 Recycling flush streams in adsorption separation process for energy savings Nov. 19, 2013
8546630 Methods for removing unsaturated aliphatic hydrocarbons from a hydrocarbon stream using clay Oct. 1, 2013
8546631 Methods for removing unsaturated aliphatic hydrocarbons from a hydrocarbon stream using activated carbon Oct. 1, 2013
8546632 Methods for removing unsaturated aliphatic hydrocarbons from a hydrocarbon stream using an acidic molecular sieve Oct. 1, 2013
8436223 Separation of olefins from olefins/paraffins mixed gas May. 7, 2013
8431762 Production of high purity butene-1 from C4 olefins/paraffins mixed gas Apr. 30, 2013
8404916 Process for separating and/or introducing a flush material in an adsorption separation system Mar. 26, 2013
8329975 Elimination of residual transfer line raffinate from feed to increase normal paraffin separation unit capacity Dec. 11, 2012
8273938 Heavy olefin production process Sep. 25, 2012
8198502 Process for separating para-xylene from a mixture of C8 and C9 aromatic hydrocarbons Jun. 12, 2012
8158843 Deep desulfurization of hydrocarbon fuels Apr. 17, 2012
8124825 Method of purifying 2,7-dimethylnaphthalene Feb. 28, 2012
8062599 Oxygenate conversion reactor catalyst coolers Nov. 22, 2011
8008536 Simulated moving bed adsorptive separation process for handling multiple feedstocks Aug. 30, 2011
7960601 Heavy paraffin adsorption separation process Jun. 14, 2011
7906088 Method of removing impurities from gas or liquid streams using copper oxide and halide salt Mar. 15, 2011
7897827 Propylene recovery during regeneration of an oxygenate removal unit Mar. 1, 2011
7855312 Method for processing an olefin-containing product stream Dec. 21, 2010
7838713 Process for separating para-xylene from a mixture of C8 and C9 aromatic hydrocarbons Nov. 23, 2010
7837862 Method for removing sulfur or other contaminant species from hydrocarbon fuels or other fuels Nov. 23, 2010
7803215 Adsorber for pretreatment of natural gas containing bulk hydrogen sulfide Sep. 28, 2010
7718842 Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption using tetraline as a desorbant May. 18, 2010
7649124 Simulated moving bed adsorptive separation process using a plurality of adsorption chambers in parallel and crystallizer and device used therein Jan. 19, 2010
7635795 Simulated moving bed adsorptive separation process comprising preparation of feed by using single adsorption chamber and device used therein Dec. 22, 2009
7592499 Process for co-producing para-xylene and styrene Sep. 22, 2009
7576253 Method of separating dimethylnaphthalene isomers Aug. 18, 2009
7449049 Method of purifying a natural gas by mercaptan adsorption Nov. 11, 2008
7435865 Method for separating hydrocarbons and use of a zeolite therefor Oct. 14, 2008
7396973 Simulated moving bed adsorptive separation process for handling multiple feedstocks Jul. 8, 2008
7342145 Process for refining liquefied petroleum gas in a commercial scale Mar. 11, 2008
7205448 Process for the removal of nitrogen compounds from a fluid stream Apr. 17, 2007
7148392 Separation of 1-butene from C.sub.4 feed streams Dec. 12, 2006
7087156 Process for removal of nitrogen containing contaminants from gas oil feedstreams Aug. 8, 2006
7063732 High-capacity sulfur adsorbent bed and gas desulfurization method Jun. 20, 2006
6960700 Adsorbent beds for removal of hydrides from hydrocarbons Nov. 1, 2005
6924406 Process for separating mixtures of hydrocarbon isomers in gas phase on molecular sieves Aug. 2, 2005
6870073 Process for separating normal paraffins from hydrocarbons and applications for the separated hydrocarbons Mar. 22, 2005
6841714 Process for co-production of paraxylene, metaxylene and/or orthoxylene Jan. 11, 2005
6838588 Process for co-producing para-xylene and metaxylene, comprising two separation steps Jan. 4, 2005
6828470 Coproduction process for para-xylene and ortho-xylene comprising two separation steps Dec. 7, 2004
6797854 Process for drying a gaseous or liquid mixture with the aid of an adsorber composed of alumina and of a molecular sieve Sep. 28, 2004
6784334 Process for separating multibranched paraffins using a zeolitic adsorbent with a mixed structure Aug. 31, 2004
6689929 Process for the production of para-xylene using toluene feeds and pressure swing adsorption Feb. 10, 2004
6627783 Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed C8 aromatics Sep. 30, 2003
6486375 Process for recovering hydrocarbons from inert gas-hydrocarbon vapor mixtures Nov. 26, 2002

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