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Class Information
Number: 585/856
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By addition of extraneous agent, e.g., solvent, etc. > S containing
Description: Subject matter wherein an agent contains sulfur in free or combined form.










Sub-classes under this class:

Class Number Class Name Patents
585/857 S dioxide, sulfolane, or sulfolene 82
585/858 Sulfuric acid 15


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8680358 Methods for removing heavy hydrocarbons from extractive solvents Mar. 25, 2014
8163967 Oxygenate conversion to olefins with enhanced carbonyl recovery Apr. 24, 2012
7968758 Process for the dissociation of MTBE Jun. 28, 2011
7910786 Process for the dissociation of MTBE Mar. 22, 2011
7411107 Alkene separation process Aug. 12, 2008
7202391 Process for inhibiting polymerization of an aromatic vinyl compound Apr. 10, 2007
6806398 Process for removing mercury from liquid hydrocarbon Oct. 19, 2004
6727398 Methods and systems for purifying styrene feedstock comprising use of low palladium catalyst Apr. 27, 2004
6660899 Methods for enhanced aromatic extraction employing sulfone-sulfoxide compositions Dec. 9, 2003
6623659 Separation of olefins from paraffins using ionic liquid solutions Sep. 23, 2003
6617483 Polyalkylene glycol compositions for enhanced aromatic extraction Sep. 9, 2003
6531103 Process for removing sulfur compounds from gas and liquid hydrocarbon streams Mar. 11, 2003
6399847 Method of purifying 1,3,5-triisopropylbenzene Jun. 4, 2002
6268543 Method of removing mercury in liquid hydrocarbon Jul. 31, 2001
6037516 Method for removal of oxygenate impurities from organic chemical streams Mar. 14, 2000
5985179 Corrosion inhibitor for alkanolamine units Nov. 16, 1999
5965784 Process and apparatus for extracting aromatic compounds contained in a hydrocarbon feedstock Oct. 12, 1999
5880325 Aromatics extraction from hydrocarbon oil using tetramethylene sulfoxide Mar. 9, 1999
5843299 Corrosion inhibitor for alkanolamine units Dec. 1, 1998
5777188 Thermal cracking process Jul. 7, 1998
5744685 Unsaturated hydrocarbon separation and recovery process Apr. 28, 1998
5463154 Arsine and phosphines as acetylene converter moderators Oct. 31, 1995
5446233 Ethylene plant caustic system emulsion breaking with salts of alkyl sulfonic acids Aug. 29, 1995
5430225 Methods of production of novel molybdenum-sulfide dimers and reactions of the same Jul. 4, 1995
5414194 Method of production of novel molybdenum-sulfide dimers and reactions of the same May. 9, 1995
5396022 Defluorination of alkane streams Mar. 7, 1995
5393385 Separation of hexane from vinyl acetate and methyl acrylate by extractive distillation Feb. 28, 1995
5262015 Separation of octene-1 from its isomers by azeotropic and extractive distillation Nov. 16, 1993
5245106 Method of eliminating mercury or arsenic from a fluid in the presence of a mercury and/or arsenic recovery mass Sep. 14, 1993
5228957 Separation of methyl T-butyl ether from close boiling C.sub.5 hydrocarbons by extractive distillation Jul. 20, 1993
5220105 Process for purifying d-limonene Jun. 15, 1993
5209913 Process for the production of natural gas condensate having a reduced amount of mercury from a mercury-containing natural gas wellstream May. 11, 1993
5202521 Monoolefin/paraffin separation by selective absorption Apr. 13, 1993
5191149 Method of refining liquified petroleum gases into aerosol propellants Mar. 2, 1993
5185391 Oxidation inhibited arylcyclobutene polymers Feb. 9, 1993
5177232 Method for chemically modifying a metal complex Jan. 5, 1993
5157203 Separation of organic sulfides from olefins Oct. 20, 1992
5157205 Process for removing aldehydes and/or vinyl esters from gaseous or liquid process streams Oct. 20, 1992
5135620 Separation of ethylbenzene from xylenes by extractive distillation Aug. 4, 1992
5130108 Process for the production of natural gas condensate having a reduced amount of mercury from a mercury-containing natural gas wellstream Jul. 14, 1992
5094723 Separation of m-xylene from p-xylene or o-xylene by extractive distillation with alcohols Mar. 10, 1992
5068011 Separation of monoolefins from paraffins Nov. 26, 1991
4983277 Process for the production of natural gas condensate having a reduced amount of mercury from a mercury-containing natural gas wellstream Jan. 8, 1991
4981577 Process for the production of natural gas condensate having a reduced amount of mercury from a mercury-containing natural gas wellstream Jan. 1, 1991
4915818 Use of dilute aqueous solutions of alkali polysulfides to remove trace amounts of mercury from liquid hydrocarbons Apr. 10, 1990
4877515 Use of polysulfide treated molecular sieves to remove mercury from liquefied hydrocarbons Oct. 31, 1989
4822947 Separation of m-xylene from o-xylene by extractive distillation with DMSO Apr. 18, 1989
4816139 Method for removing sulfur compounds from C.sub.6 and lower alkanes Mar. 28, 1989
4710273 Olefin purification process Dec. 1, 1987
4661209 Separation of methyl t-butyl ether from hydrocarbons by extractive distillation Apr. 28, 1987

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