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Class Information
Number: 585/264
Name: Chemistry of hydrocarbon compounds > Adding hydrogen to unsaturated bond of hydrocarbon, i.e., hydrogenation > With preliminary treatment of feed or plural separation procedures
Description: Subject matter wherein a reactant to the process is treated, e.g., by heating, purification, etc., before the hydrogenation reaction or wherein more than one separation procedure is applied to the hydrogenerator effluent.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7393993 |
Method for removal of acetylenes from hydrocarbon streams |
Jul. 1, 2008 |
| 7368618 |
Process for removal of oxygenates from a paraffin stream |
May. 6, 2008 |
| 7351327 |
Process for the selective desulfurization of a mid range gasoline cut |
Apr. 1, 2008 |
| 7329787 |
Process for transforming hydrocarbons into a fraction having an improved octane number and a fraction with a high cetane index |
Feb. 12, 2008 |
| 7250106 |
Flexible process for the production of oil bases and middle distillates with a converting pretreatment stage followed by a catalytic dewaxing stage |
Jul. 31, 2007 |
| 7223894 |
Process for total hydrogenation using a catalytic reactor with a hydrogen-selective membrane |
May. 29, 2007 |
| 7175754 |
Process for the production of low benzene gasoline |
Feb. 13, 2007 |
| 7090766 |
Process for ultra low sulfur gasoline |
Aug. 15, 2006 |
| 7074971 |
Recovery of ethylene and propylene from a methanol to olefin reaction system |
Jul. 11, 2006 |
| 7060865 |
Recovery of C4 olefins from a product stream comprising C4 olefins, dimethyl ether and C5+ hydrocarbons |
Jun. 13, 2006 |
| 6855853 |
Process for the production of low benzene gasoline |
Feb. 15, 2005 |
| 6835301 |
Production of low sulfur/low aromatics distillates |
Dec. 28, 2004 |
| 6830678 |
Process of desulphurizing gasoline comprising desulphurization of the heavy and intermediate fractions resulting from fractionation into at least three cuts |
Dec. 14, 2004 |
| 6824676 |
Process for the selective desulfurization of a mid range gasoline cut |
Nov. 30, 2004 |
| 6781023 |
Decreasing Br-reactive contaminants in aromatic streams |
Aug. 24, 2004 |
| 6740787 |
Process for treatment of C4 hydrocarbons that comprise butadiene and acetylene compounds that comprise stages for distillation and selective hydrogenation |
May. 25, 2004 |
| 6632414 |
Mini-structured catalyst beds for three-phase chemical processing |
Oct. 14, 2003 |
| 6620982 |
Method of producing purified cyclopentane |
Sep. 16, 2003 |
| 6495030 |
Process for the desulfurization of FCC naphtha |
Dec. 17, 2002 |
| 6486369 |
Process for selective hydrogenation of an olefinic feed stream containing acetylenic and diolefinic impurities |
Nov. 26, 2002 |
| 6468399 |
Process for isolating cyclopentane and/or cyclopentene |
Oct. 22, 2002 |
| 6451198 |
Process for transforming a gas oil cut to produce a dearomatized and desulphurized fuel with a high cetane number |
Sep. 17, 2002 |
| 6444118 |
Process for sulfur reduction in naphtha streams |
Sep. 3, 2002 |
| 6414205 |
Process for the removal of MAPD from hydrocarbon streams |
Jul. 2, 2002 |
| 6410811 |
Selective hydrogenation process comprising partial separation of hydrogen by a membrane upstream of a reactive column |
Jun. 25, 2002 |
| 6376735 |
Process to remove reaction by-products from a selective hydrogenation effluent stream |
Apr. 23, 2002 |
| 6365791 |
Process for converting hydrocarbons by treatment in a distillation zone comprising extracting a hydrocarbon cut as a side stream, associated with a reaction zone, and its use for hydrogenating |
Apr. 2, 2002 |
| 6316646 |
Process for the continuous catalytic transformation of organic compounds |
Nov. 13, 2001 |
| 6264799 |
Process for isolating cyclopentane and/or cyclopentene |
Jul. 24, 2001 |
| 6261442 |
Process for converting hydrocarbons by treatment in a distillation zone comprising withdrawing a stabilized distillate, associated with a reaction zone, and its use for hydrogenating benzene |
Jul. 17, 2001 |
| 6221239 |
Process for transforming a gas oil cut to produce a dearomatised and desulphurised fuel with a high cetane number |
Apr. 24, 2001 |
| 6217749 |
Process for hydrotreating a hydrocarbon feedstock and apparatus for carrying out same |
Apr. 17, 2001 |
| 6210561 |
Steam cracking of hydrotreated and hydrogenated hydrocarbon feeds |
Apr. 3, 2001 |
| 6194626 |
Process for the purification of a diolefin hydrocarbon stream from a naphtha steam cracker |
Feb. 27, 2001 |
| 6156946 |
Biological activation of aromatics for chemical processing and/or upgrading of aromatic compounds, petroleum, coal, resid, bitumen and other petrochemical streams |
Dec. 5, 2000 |
| 6156933 |
Supercritical hydrogenation |
Dec. 5, 2000 |
| 6153804 |
Production of cyclopentane and/or cyclopentene from partially hydrogenated pyrolysis gasoline |
Nov. 28, 2000 |
| 6124514 |
Process for generating pure benzene from reformed gasoline |
Sep. 26, 2000 |
| 6118034 |
Process for the selective hydrogenation of dienes in reformate flows |
Sep. 12, 2000 |
| 6107533 |
Foulant reducing upstream hydrogenation unit systems |
Aug. 22, 2000 |
| 6072091 |
Process for selective hydrogenation of a hydrocarbon cut containing at least three carbon atoms |
Jun. 6, 2000 |
| 6042716 |
Process for transforming a gas oil cut to produce a dearomatised and desulphurised fuel with a high cetane number |
Mar. 28, 2000 |
| 6040489 |
1,3-Butadiene separation from a crude C.sub.4 stream using catalytic extractive distillation |
Mar. 21, 2000 |
| 6015933 |
Process for removing polymeric by-products from acetylene hydrogenation product |
Jan. 18, 2000 |
| 6002058 |
Process for the alkylation of benzene |
Dec. 14, 1999 |
| 5939596 |
Butadiene removal system for ethylene plants with front end hydrogenation systems |
Aug. 17, 1999 |
| 5925799 |
Catalytic distillation and hydrogenation of heavy unsaturates in an olefins plant |
Jul. 20, 1999 |
| 5905178 |
Removal of .alpha.-methyl styrene from cumene |
May. 18, 1999 |
| 5817227 |
Process for the selective reduction to the content of benzene and light unsaturated compounds in a hydrocarbon cut |
Oct. 6, 1998 |
| 5807477 |
Process for the treatment of light naphtha hydrocarbon streams |
Sep. 15, 1998 |
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