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Class Information
Number: 585/834
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By addition of extraneous agent, e.g., solvent, etc. > With contact procedure involving particular apparatus or more than two moving streams
Description: Subject matter wherein contact of the feedstock with the agent is specified as taking place in an apparatus of defined structure or involves specified movement of three or more streams of material.

Patents under this class:

Patent Number Title Of Patent Date Issued
8455709 Heavy hydrocarbon removal systems and methods Jun. 4, 2013
8058498 Device for removing oxygen-containing organic compounds from mixtures of various hydrocarbon compounds Nov. 15, 2011
7972496 Process oil, process for production of deasphalted oil, process for production of extract, and process for production of process oil Jul. 5, 2011
7879225 Energy efficient and throughput enhancing extractive process for aromatics recovery Feb. 1, 2011
7795488 Process for the removal of oxygenates from a gaseous stream Sep. 14, 2010
7737318 Process for fine purification of 1-butenic streams Jun. 15, 2010
7718841 Extractive distillation May. 18, 2010
7713489 Experimental device for the study and the extrapolation of processes in a reactive simulated moving bed May. 11, 2010
7619126 Method for obtaining crude 1,3-butadiene from a C.sub.4 fraction Nov. 17, 2009
7465846 Extraction of oxygenates from a hydrocarbon stream Dec. 16, 2008
6676830 Process for the desulfurization of a light FCC naphtha Jan. 13, 2004
6483003 Removal of impurities from a hydrocarbon component or fraction Nov. 19, 2002
6459009 Two-stage quench tower for use with oxygenate conversion process Oct. 1, 2002
6303019 Treatment of refinery feedstreams to remove peroxides and prevent subsequent refinery fouling using an electrochemical reduction method (Law890) Oct. 16, 2001
6197163 Process for removing impurities from petroleum products Mar. 6, 2001
6030588 Zone refiner apparatus and method for purifying organic substances Feb. 29, 2000
5965784 Process and apparatus for extracting aromatic compounds contained in a hydrocarbon feedstock Oct. 12, 1999
5942654 Process for the removal of corrosive compounds from a fluid stream Aug. 24, 1999
5863420 Unsaturated hydrocarbon separation and recovery process Jan. 26, 1999
5849982 Recovery of styrene from pyrolysis gasoline by extractive distillation Dec. 15, 1998
5659109 Method for removing mercaptans from LNG Aug. 19, 1997
5549814 FCC stripper with spoke arrangement for bi-directional catalyst stripping Aug. 27, 1996
5510568 Process for the removal of mercaptans and hydrogen sulfide from hydrocarbon streams Apr. 23, 1996
5461184 Method for diamondoid extraction using a solvent system Oct. 24, 1995
5336841 Oxygenate removal in MTBE process Aug. 9, 1994
5336840 Process for the separation of aromatic hydrocarbons with energy redistribution Aug. 9, 1994
5191152 Process for the separation of aromatic hydrocarbons with energy redistribution Mar. 2, 1993
5131993 Low power density plasma excitation microwave energy induced chemical reactions Jul. 21, 1992
5107055 Method for simultaneous recovery of pure benzene and pure toluene Apr. 21, 1992
5015349 Low power density microwave discharge plasma excitation energy induced chemical reactions May. 14, 1991
4962275 Method and apparatus for supercritical fluid extraction solution separation Oct. 9, 1990
4822948 Self-cooled process for extracting heavy hydrocarbon fractions Apr. 18, 1989
4788379 Production of acetylene Nov. 29, 1988
4597768 Method for treatment in counter current of suspended particles with a liquid Jul. 1, 1986
4423248 Process for zone refining with a helical solution zone Dec. 27, 1983
4367363 Production of acetylene Jan. 4, 1983
4266086 Process for removing .alpha.-acetylenes from diolefins May. 5, 1981
4260847 Process and apparatus for the continuous removal of residual hydrocarbons from polyolefins Apr. 7, 1981
4168209 Process for purifying benzene and toluene by extractive azeotropic distillation Sep. 18, 1979
4125568 Removal of carbonyl impurities Nov. 14, 1978
4081354 Liquid-liquid extraction process Mar. 28, 1978
4076595 Extractive distillation of C.sub.4 hydrocarbons with an extractant mixture Feb. 28, 1978
4048062 Aromatic extraction with solvent recovery and regeneration Sep. 13, 1977
4046676 Aromatic hydrocarbon separation via solvent extraction Sep. 6, 1977
4046675 Aromatic hydrocarbon separation via solvent extraction Sep. 6, 1977
4041102 Caustic treatment of alkylate-containing hydrocarbon Aug. 9, 1977

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