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Class Information
Number: 585/827
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By contact with solid sorbent > With specified sorbent rehabilitation procedure or agent, e.g., desorbent, etc. > Cyclic sorbate
Description: Subject matter in which an aromatic or alicyclic hydrocarbon is a material retained by the sorbent during the sorption cycle.










Sub-classes under this class:

Class Number Class Name Patents
585/828 Aromatic separated from other aromatic 194


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8658848 Highly flexible process and apparatus for the simulated counter-current production of para-xylene Feb. 25, 2014
8609925 Adsorbents with improved mass transfer properties and their use in the adsorptive separation of para-xylene Dec. 17, 2013
8586816 Recycling flush streams in adsorption separation process for energy savings Nov. 19, 2013
8580120 Reduction in flushing volume in an adsorptive separation system Nov. 12, 2013
8569564 Separation system Oct. 29, 2013
8552247 Aromatics recovery by extractive distillation Oct. 8, 2013
8354019 Process for reducing benzene content of hydrocarbon stream using microporous carbon adsorbent Jan. 15, 2013
8273938 Heavy olefin production process Sep. 25, 2012
8168845 Separation process May. 1, 2012
8158843 Deep desulfurization of hydrocarbon fuels Apr. 17, 2012
8138369 Removal of branched dibenzothiophenes from hydrocarbon mixtures via charge transfer complexes with a TAPA-functionalized adsorbent Mar. 20, 2012
8049055 Process and device for separation in a simulated moving bed with a bypass fluid flow rate that is not regulated automatically Nov. 1, 2011
7977526 Simulated countercurrent adsorptive separation process Jul. 12, 2011
7960601 Heavy paraffin adsorption separation process Jun. 14, 2011
7897829 Olefinic feedstock treatment processes Mar. 1, 2011
7838714 Process and device for improved separation of metaxylene in a simulated moving bed Nov. 23, 2010
7820869 Binderless adsorbents and their use in the adsorptive separation of para-xylene Oct. 26, 2010
7812208 Binderless adsorbents with improved mass transfer properties and their use in the adsorptive separation of para-xylene Oct. 12, 2010
7763767 Adsorption process with on-line adsorbent removal Jul. 27, 2010
7759534 Process and device for improved separation of paraxylene in a simulated moving bed Jul. 20, 2010
7750198 Olefinic feedstock treatment processes Jul. 6, 2010
7728187 Adsorbent and process for the separation of meta-xylene from aromatic hydrocarbons Jun. 1, 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
7683233 Process for producing para-xylene Mar. 23, 2010
7208651 Product recovery from simulated-moving-bed adsorption Apr. 24, 2007
6924406 Process for separating mixtures of hydrocarbon isomers in gas phase on molecular sieves Aug. 2, 2005
6884918 Agglomerated zeolitic adsorbents, method for obtaining same uses thereof Apr. 26, 2005
6784334 Process for separating multibranched paraffins using a zeolitic adsorbent with a mixed structure Aug. 31, 2004
6706939 Method for concentrating 2,6-dimethylnaphthalene Mar. 16, 2004
6706938 Adsorptive separation process for recovery of para-xylene Mar. 16, 2004
6696616 Process for co-production of metaxylene and paraxylene Feb. 24, 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
6573418 Process for production of para-xylene incorporating pressure swing adsorption and simulated moving bed adsorption Jun. 3, 2003
6395951 Adsorptive separation product recovery by fractional distillation May. 28, 2002
6348636 Purification of polymeric dispersions by stripping in the presence of adsorbent materials Feb. 19, 2002
6329562 Separation process for separating cycloalkenes having at least 2 double bonds from a reaction mixture Dec. 11, 2001
6225518 Olefinic hydrocarbon separation process May. 1, 2001
6106702 Olefinic hydrocarbon separation process Aug. 22, 2000
6090993 Process for the preparation of aromatic solvent from a dioxane contaminated aromatic stream Jul. 18, 2000
5948950 Process for separating para-xylene, comprising an adsorption step with injection of water and a crystallization step Sep. 7, 1999
5912395 Raffinate line flush in simulated continuous moving bed adsorptive separation process Jun. 15, 1999
5792898 Process for the management of mononuclear and polynuclear aromatic compounds produced in a hydrocarbon dehydrogenation reaction zone Aug. 11, 1998
5792899 Process for the management of polynuclear aromatic compounds produced in a hydrocarbon dehydrogenation reaction zone Aug. 11, 1998
5643442 Membrane process for enhanced distillate or hydrotreated distillate aromatics reduction Jul. 1, 1997
5510564 N-paraffin purification process with removal of aromatics Apr. 23, 1996
5294334 Benzene removal and conversion from gasoline boiling range streams Mar. 15, 1994
5220099 Purification of a hydrocarbon feedstock using a zeolite adsorbent Jun. 15, 1993
5210333 Benzene removal from hydrocarbon streams May. 11, 1993
5198102 Benzene removal from a heartcut fraction of gasoline boiling range streams Mar. 30, 1993

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