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Class Information
Number: 585/258
Name: Chemistry of hydrocarbon compounds > Adding hydrogen to unsaturated bond of hydrocarbon, i.e., hydrogenation > Hydrocarbon is contaminant in desired hydrocarbon
Description: Subject matter where the unsaturated hydrocarbon which is hydrogenated is an impurity or contaminant in a desired hydrocarbon, a substantial amount of which desired hydrocarbon is present in the feedstock to the process.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7381854 |
Selective hydrogenation of alpha-methyl-styrene to cumene |
Jun. 3, 2008 |
| 7368625 |
Catalysts with high cobalt surface area |
May. 6, 2008 |
| 7319176 |
Selective hydrogenation of acetylenes |
Jan. 15, 2008 |
| 7297824 |
Ni hydrogenation catalysts, manufacture and use |
Nov. 20, 2007 |
| 7199273 |
Selective hydrogenation of alkynes and/or diolefins |
Apr. 3, 2007 |
| 7173160 |
Processes for concentrating higher diamondoids |
Feb. 6, 2007 |
| 7045670 |
Process for liquid phase hydrogenation |
May. 16, 2006 |
| 7038097 |
Dual bed process using two different catalysts for selective hydrogenation of acetylene and dienes |
May. 2, 2006 |
| 7014750 |
System and process for pyrolysis gasoline hydrotreatment |
Mar. 21, 2006 |
| 6977317 |
Process for the selective hydrogenation of olefins |
Dec. 20, 2005 |
| 6908543 |
Method for retarding fouling of feed heaters in refinery processing |
Jun. 21, 2005 |
| 6855853 |
Process for the production of low benzene gasoline |
Feb. 15, 2005 |
| 6824687 |
Extraction of phenol from wastewater |
Nov. 30, 2004 |
| 6781023 |
Decreasing Br-reactive contaminants in aromatic streams |
Aug. 24, 2004 |
| 6759562 |
Olefin plant recovery system employing a combination of catalytic distillation and fixed bed catalytic steps |
Jul. 6, 2004 |
| 6747181 |
Process for the hydrogenation of phenyl acetylene in a styrene-containing medium with the aid of a catalyst |
Jun. 8, 2004 |
| 6693225 |
Process for hydrogenating cuts containing hydrocarbons, in particular unsaturated molecules containing at least two double bonds or at least one triple bond |
Feb. 17, 2004 |
| 6689926 |
Process for purifying styrene monomer feedstock prior to polymerization |
Feb. 10, 2004 |
| 6586647 |
Process for hydrogenating acetylenes |
Jul. 1, 2003 |
| 6512151 |
Process for the purification and production of a diolefin hydrocarbon stream |
Jan. 28, 2003 |
| 6486369 |
Process for selective hydrogenation of an olefinic feed stream containing acetylenic and diolefinic impurities |
Nov. 26, 2002 |
| 6476283 |
Hydrogenation of unsaturated polymers using divalent diene-containing bis-cyclopentadienyl group IV metal catalysts |
Nov. 5, 2002 |
| 6455746 |
Ultrafine polymetallic particles, preparation and use for hydrogenating olefins and for coupling halogenated aromatic derivatives |
Sep. 24, 2002 |
| 6437206 |
Catalyst and processes for the selective hydrogenation of unsaturated compounds in hydrocarbon streams |
Aug. 20, 2002 |
| 6417419 |
Process for hydrogenating acetylenes |
Jul. 9, 2002 |
| 6407300 |
Apparatus and process for hydrogenations |
Jun. 18, 2002 |
| 6388150 |
Selective hydrogenation process and catalyst therefor |
May. 14, 2002 |
| 6329561 |
Impurities removal |
Dec. 11, 2001 |
| 6284128 |
Reforming with selective reformate olefin saturation |
Sep. 4, 2001 |
| 6278033 |
Catalyst and process for purifying streams of materials |
Aug. 21, 2001 |
| 6271428 |
Process for the purification of a diolefin hydrocarbon stream |
Aug. 7, 2001 |
| 6239322 |
Selective hydrogenation catalysts containing palladium, also tin and/or lead, and the preparation and use thereof |
May. 29, 2001 |
| 6225515 |
Process for the purification of a diolefin hydrocarbon stream |
May. 1, 2001 |
| 6218589 |
Method for improving the operation of a propane-propylene splitter |
Apr. 17, 2001 |
| 6005156 |
Para-xylene separation process comprising pretreatment by selective hydrogenation and by activated clay |
Dec. 21, 1999 |
| 6002058 |
Process for the alkylation of benzene |
Dec. 14, 1999 |
| 5962755 |
Process for the isomerization of benzene containing feed streams |
Oct. 5, 1999 |
| 5955640 |
Integrated process for the production of butene-1 |
Sep. 21, 1999 |
| 5939596 |
Butadiene removal system for ethylene plants with front end hydrogenation systems |
Aug. 17, 1999 |
| 5905178 |
Removal of .alpha.-methyl styrene from cumene |
May. 18, 1999 |
| 5894076 |
Process for alkylation of benzene |
Apr. 13, 1999 |
| 5851383 |
Process for thioetherification and selective hydrogenation of light olefins |
Dec. 22, 1998 |
| 5821397 |
Process for the hydrogenation of diolefins in aromatic-rich hydrocarbons using metallic catalysts impregnated with organic sulphur-containing compounds |
Oct. 13, 1998 |
| 5763714 |
Process and apparatus for the production and recovery of p-xylene |
Jun. 9, 1998 |
| 5759386 |
Process for thioetherification and selective hydrogenation of light hydrocarbons |
Jun. 2, 1998 |
| 5698752 |
Selective hydrogenation process |
Dec. 16, 1997 |
| 5658453 |
Integrated aromatization/trace-olefin-reduction scheme |
Aug. 19, 1997 |
| 5583274 |
Alkyne hydrogenation process |
Dec. 10, 1996 |
| 5534658 |
Process for reducing the benzene content of petrols |
Jul. 9, 1996 |
| 5475173 |
Hydrogenation process and catalyst therefor |
Dec. 12, 1995 |
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