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Class Information
Number: 585/831
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By contact with solid sorbent > Cyclic sorbate
Description: Subject matter in which an aromatic or alicyclic hydrocarbon is a material retained by the sorbent.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8530367 Agglomerated zeolitic adsorbents, their method of preparation and their uses Sep. 10, 2013
8431763 Separation method of aromatic compounds comprising simulated moving bed xylene mixture pre-treatment process and additional xylene isomerization process Apr. 30, 2013
8431764 Para-xylene-separation with aluminosilicate X-type zeolite compositions with low LTA-type zeolite Apr. 30, 2013
8404916 Process for separating and/or introducing a flush material in an adsorption separation system Mar. 26, 2013
8053620 Guard bed for removing contaminants from feedstock to a normal paraffin extraction unit Nov. 8, 2011
7638677 Mixed matrix adsorbent for para-xylene separation Dec. 29, 2009
7141631 Non-conjugated cyclic diene, non-conjugated cyclic diene composition and method of producing polymer based on non-conjugated cyclic diene Nov. 28, 2006
6924406 Process for separating mixtures of hydrocarbon isomers in gas phase on molecular sieves Aug. 2, 2005
6784334 Process for separating multibranched paraffins using a zeolitic adsorbent with a mixed structure Aug. 31, 2004
6696615 Method of separating polycyclic aromatic hydrocarbons by means of chromatography Feb. 24, 2004
6673979 Process for separating alkylaromatic hydrocarbons Jan. 6, 2004
6483002 Integrated fractional distillation for adsorptive separation process Nov. 19, 2002
6410815 Agglomerated zeolite adsorbents, process for their preparation, and their use for adsorbing paraxylene from aromatic C8 fractions Jun. 25, 2002
6403856 Process for separating alkylaromatic hydrocarbons Jun. 11, 2002
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
6348637 Multifunction fractionation column for adsorptive separation processes Feb. 19, 2002
6329562 Separation process for separating cycloalkenes having at least 2 double bonds from a reaction mixture Dec. 11, 2001
6281406 Adsorption process for paraxylene purifacation using Cs SSZ-25 adsorbent with benzene desorbent Aug. 28, 2001
6274784 Process for separating alkylaromatic hydrocarbons Aug. 14, 2001
5900523 Process for adsorptive separation of metaxylene from xylene mixtures May. 4, 1999
5849981 Adsorptive separation of para-xylene using isopropylbenzene desorbent Dec. 15, 1998
5643442 Membrane process for enhanced distillate or hydrotreated distillate aromatics reduction Jul. 1, 1997
5629467 Process and apparatus for the separation of p-xylene in C.sub.8 aromatic hydrocarbons with a simulated moving bed adsorption and a crystallization May. 13, 1997
5453560 Process for adsorptive separation of ethylbenzene from aromatic hydrocarbons Sep. 26, 1995
5414191 Method of removing alkyltetralins from an alkylbenzene mixture May. 9, 1995
5382747 Process for the adsorptive separation of metaxylene from aromatic hydrocarbons Jan. 17, 1995
5336837 Separation of diethylbenzene isomers on silicalite in the presence of high pressure carbon dioxide and propane Aug. 9, 1994
5329060 Integrated selective adsorption and crystallization process for para-xylene recovery Jul. 12, 1994
5300721 Method for separating 2,6-diethylnaphthalene Apr. 5, 1994
5294334 Benzene removal and conversion from gasoline boiling range streams Mar. 15, 1994
5284992 Process and apparatus for the separation of p-xylene in C.sub.8 aromatic hydrocarbons with a simulated moving bed absorption and a crystallization Feb. 8, 1994
5278344 Integrated catalytic reforming and hydrodealkylation process for maximum recovery of benzene Jan. 11, 1994
5268523 Selective sorption of dialkylated multinuclear aromatic compounds Dec. 7, 1993
5245108 Cycloolefin purification method Sep. 14, 1993
5223589 Process for separating durene from substituted benzene hydrocarbons Jun. 29, 1993
5220099 Purification of a hydrocarbon feedstock using a zeolite adsorbent Jun. 15, 1993
5210333 Benzene removal from hydrocarbon streams May. 11, 1993
5202516 Process of recovering monoalkylbenzene and pure 1,3,5-trialkylbenzene from a mixture of dialkyl- and trialkylbenzenes Apr. 13, 1993
5146040 Process for separating dimethylnaphthalene isomers with zeolite L agglomerates Sep. 8, 1992
5019667 Process for purification of hydrocarbons May. 28, 1991
5004853 Continuous process for the production of 2,6-dimethylnaphthalene Apr. 2, 1991
4962273 Purification of alpha naphthol-containing feedstock by adsorption Oct. 9, 1990
4835334 Two-stage adsorptive separation process for purifying 2,6 Dimethylnaphthalene May. 30, 1989
4791235 Process for separating 2,6-dimethylnaphthalene Dec. 13, 1988
4567315 Process for purification of liquid paraffins Jan. 28, 1986
4440634 Organic salt compositions in extraction processes Apr. 3, 1984
4336410 Process for absorptive separation of cyclohexene Jun. 22, 1982
4175099 Separation and recovery of ethylbenzene from C.sub.8 aromatic mixtures using rubidium-X sieves Nov. 20, 1979
4128593 Production and recovery of para-cymene Dec. 5, 1978

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