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Class Information
Number: 585/804
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By plural serial diverse separations > To recover aromatic
Description: Subject matter in which an aromatic hydrocarbon is purified or separated out from a mixture.










Sub-classes under this class:

Class Number Class Name Patents
585/806 Having unsaturated or one-c side-chain 24
585/807 Including steps of distillation and agent addition 77
585/805 Xylene or ethylbenzene 114


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8680358 Methods for removing heavy hydrocarbons from extractive solvents Mar. 25, 2014
8648227 Method for extracting pure styrene from a pyrolysis benzine fraction Feb. 11, 2014
8558046 Aromatic alkylation process Oct. 15, 2013
8536397 Recovery of benzene and benzene derivatives from gasoline fraction and refinery streams Sep. 17, 2013
8492604 Method for preparing linear alpha-olefins with removal of aromatic by-products and reactor system therefor Jul. 23, 2013
8481797 Processes for maximizing high-value aromatics production utilizing stabilized crude benzene withdrawal Jul. 9, 2013
8395002 Use of catalytic distillation for benzene separation and purification Mar. 12, 2013
8344200 Start up procedure in a process for purifying aromatic streams Jan. 1, 2013
8258363 Separation of aromatics with pervaporation membrane Sep. 4, 2012
8227654 Aromatic hydrocarbon purification method Jul. 24, 2012
8222474 Fractional extraction of butadiene Jul. 17, 2012
8123913 Process for separating diisopropylbenzene (DIPB) and triisoproplybenzene (TIPB) from a feed comprising DIPB, TIBP, and polyalkylate heavies Feb. 28, 2012
8057664 Process for reducing bromine index of hydrocarbon feedstocks Nov. 15, 2011
8048295 Process for decreasing bromine-reactive contaminants in hydrocarbon feeds Nov. 1, 2011
8048294 Process for reducing bromine index of hydrocarbon feedstocks Nov. 1, 2011
7989669 Recycle of DME in an oxygenate-to-olefin reaction system Aug. 2, 2011
7960599 Method for making industrial chemicals Jun. 14, 2011
7956157 Processes using dividing wall distillation column Jun. 7, 2011
7935650 Neutralization of quench stream in a process for handling catalyst from an oxygenate-to-olefin reaction May. 3, 2011
7893310 Method of separating condensed liquid from an olefin stream Feb. 22, 2011
7879920 Oxygenate to olefin manufacture and recovery process Feb. 1, 2011
7815793 Process for reducing bromine index of hydrocarbon feedstock Oct. 19, 2010
7790943 Integrated process for removing benzene from gasoline and producing cyclohexane Sep. 7, 2010
7741528 Method of separating condensed liquid from an olefin stream Jun. 22, 2010
7731839 Process for reducing bromine index of hydrocarbon feedstocks Jun. 8, 2010
7709693 Toluene production May. 4, 2010
7687677 Process for recovering thermal energy from a reactor effluent stream Mar. 30, 2010
7678958 Method of removing dimethyl ether from an olefin stream Mar. 16, 2010
7626069 Method for cleaning tar-bearing waste water and apparatus for performing said method Dec. 1, 2009
7556717 Method and device for extractive distillation Jul. 7, 2009
7501549 Benzene removal from FCC naphtha Mar. 10, 2009
7494584 Energy efficient method for exothermic reactions Feb. 24, 2009
7339088 Alkylbenzene refining process and apparatus Mar. 4, 2008
7326823 Aromatic compound recovery Feb. 5, 2008
7320745 Energy efficient method for exothermic reactions Jan. 22, 2008
7255792 Method for modifying an organic composition Aug. 14, 2007
7186876 Process to prepare a process oil Mar. 6, 2007
7125483 Corrosion control in olefin production plants Oct. 24, 2006
7094937 Compositions comprising cyclohexamantane Aug. 22, 2006
6987208 Process for removing oxygenates from an olefinic stream Jan. 17, 2006
6863779 Distillation of styrene Mar. 8, 2005
6800253 Apparatus and process for improved aromatic extraction from gasoline Oct. 5, 2004
6781023 Decreasing Br-reactive contaminants in aromatic streams Aug. 24, 2004
6727399 Process for separating linear alpha olefins from saturated hydrocarbons Apr. 27, 2004
6717025 Process for removing oxygenates from an olefinic stream Apr. 6, 2004
6559349 Process for separating internal and alpha olefins from saturated compounds May. 6, 2003
6500996 Process for BTX purification Dec. 31, 2002
6472578 Isomerization with adsorptive separation and dividing wall fractional distillation Oct. 29, 2002
6410815 Agglomerated zeolite adsorbents, process for their preparation, and their use for adsorbing paraxylene from aromatic C8 fractions Jun. 25, 2002
6410816 Processing oil and method for producing the same Jun. 25, 2002

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