| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 08/11/2004 | CN1520387A Process for purificaton and prodn. of diolefin hydrocarbon stream |
| 08/11/2004 | CN1161308C Ethylene plant refrigeration system |
| 08/10/2004 | US6774273 Disproportionation of toluene to produce mixed xylenes containing a high concentration of p-xylene, and disproportionation and transalkylation of c9+ aromatics and toluene to produce benzene and the mixed xylenes |
| 08/05/2004 | WO2004065338A1 Method for producing butene oligomers and tert-butyl ethers from c4 flows containing isobutene |
| 08/05/2004 | WO2004065337A2 Olefin plant refrigeration system |
| 08/05/2004 | WO2004065003A1 Esterification catalyst and process for the esterification of acids in a hydrocarbons containing feed |
| 08/05/2004 | WO2004039757A3 Method for producing oligomers derived from butenes |
| 08/05/2004 | US20040152938 such as dimethyl ether via higher boiling points; comprises hydrorefining/hydrogenation catalysts; molecular sieves |
| 08/05/2004 | US20040152793 High purity olefinic naphthas for the production of ethylene and propylene |
| 08/05/2004 | US20040152792 Production of stable olefinic fischer tropsch fuels with minimum hydrogen consumption |
| 08/05/2004 | US20040148964 Lean reflux-high hydrocarbon recovery process |
| 08/05/2004 | DE10303233A1 Adsorptive separation of ethane and higher hydrocarbons, useful for removing condensible components from natural gas, involves using activated alumina as adsorbent |
| 08/04/2004 | EP1443035A1 Process and apparatus for separation and purification of conjugated diene |
| 08/04/2004 | EP1442001A2 Method for eliminating polarizable impurities from hydrocarbons and hydrocarbon mixtures |
| 08/04/2004 | EP1080056B1 Olefin purification by adsorption of acetylenics and regeneration of adsorbent |
| 08/04/2004 | CN1160284C Process for the hydrogenation of phenyl acetylene in styrene-containing medium with the aid of catalyst |
| 08/04/2004 | CN1160283C Method for separating C4 hydrocarbon mixture |
| 08/03/2004 | US6770222 Polymerization-inhibiting composition, polymerization inhibitor and method for inhibiting polymerization |
| 07/29/2004 | US20040147797 Method of inhibiting polymerization of aromatic vinyl |
| 07/29/2004 | US20040147796 Method of separating olefins from mixtures with paraffins |
| 07/29/2004 | DE69912203T2 Verfahren zur inhibierung der polymerisierung von vinylverbindungen A method for inhibiting the polymerization of vinyl compounds |
| 07/28/2004 | EP1181321B1 Method for isolating olefins from polyolefin plants |
| 07/28/2004 | CN1159271C Method of preparing high-purity xanthohumic acid using supercritical CO2 |
| 07/28/2004 | CN1159220C Process for purifying and recovering ammonia gas |
| 07/22/2004 | WO2004060840A2 Multicomponent sorption bed for the desulfurization of hydrocarbons |
| 07/22/2004 | WO2004045767A3 Methods for preparing catalysts |
| 07/22/2004 | US20040143146 Transalkylation of aromatic fluids |
| 07/22/2004 | CA2509200A1 Multicomponent sorption bed for the desulfurization of hydrocarbons |
| 07/21/2004 | EP1438277A2 Recycle of nitroxyl-containing streams at low temperature |
| 07/21/2004 | CN1513818A Rectification and extraction crossing and combining separation process of carbon 9 arene |
| 07/21/2004 | CN1158232C Process for purifying naphthalene by selective hydrotreatment followed by separation |
| 07/21/2004 | CN1158231C Method for purifying norbornene by distillation |
| 07/21/2004 | CN1158230C Process for separating liner internal olefins from branched internal olefins |
| 07/21/2004 | CN1158228C Productive process for isoalkene and/or tertiary alkyl ether |
| 07/20/2004 | US6764602 Process of removing oxygenated contaminants from an olefin composition |
| 07/15/2004 | WO2004058665A2 Method for the hydration of hydrocarbon compounds |
| 07/15/2004 | US20040138513 Using onium polymer complexes; forming high octane gasoline and alkaryl detergent additives |
| 07/14/2004 | EP1437336A1 Method of separating/purifying conjugated diene and separation/purification apparatus |
| 07/14/2004 | EP1436242A1 Method of removing dimethyl ether from an olefin stream |
| 07/14/2004 | EP1436241A1 Low pressure separation of dimethyl ether from an olefin stream |
| 07/14/2004 | CN1512973A process for improved yields of high molecular weight olefins form lower molecular weight olefines |
| 07/14/2004 | CN1511928A Reasonably utilizing method for hydrogen in small refinery enterprise |
| 07/14/2004 | CN1511811A Oxygen removing method of butadiene refining device |
| 07/13/2004 | US6761833 Stabilization of monomers by compositions based on alkylhydroxylamines |
| 07/08/2004 | WO2004057253A2 Lean reflux-high hydrocarbon recovery process |
| 07/08/2004 | WO2004056730A1 Process for separating linear alpha olefins from saturated hydrocarbons |
| 07/08/2004 | WO2004056729A1 Purification process of aromatics |
| 07/08/2004 | WO2004056728A1 Olefinic metathesis in the presence of phenolic compounds |
| 07/08/2004 | WO2003024605A3 Underwater scrubbing of co2 from co2-containing hydrocarbon resources |
| 07/08/2004 | US20040133058 Ionic liquids as selective additives for separation of close-boiling or azeotropic mixtures |
| 07/08/2004 | US20040133055 Disproportionation of methanol and/or dimethyl ether in the presence of catalysts in chemical reactors to form 2,2,3-trimethylbutane and 2,2,3-trimethylbut-1-ene, used as fuel additives; high octane number |
| 07/08/2004 | DE10259858A1 Verfahren zur Hydrierung von Kohlenwasserstoffverbindungen A process for the hydrogenation of hydrocarbon compounds |
| 07/07/2004 | CN1510029A Improvement method and product for preparing surface active agent by adsorption stripping |
| 07/07/2004 | CN1510013A Inhibitor |
| 07/07/2004 | CN1156494C Production of bulylene polymer |
| 07/06/2004 | US6759563 Liquid phase adsorptive separation with hexane desorbent and paraffin isomerization |
| 07/06/2004 | US6759562 Catalytic hydrogenation, catalytic cracking a mixture of the C2 to C5 and heavier acetylenes and dienes, without hydrogenating ethylene and propylene |
| 07/01/2004 | DE10257577A1 Processing of decomposable gases, especially acetylene, by countercurrent scrubbing with a liquid in a packed column comprises cooling the liquid during recycle |
| 06/30/2004 | CN1509262A Method for ethane recorery, using refrigeration cycle with a mixture of at least two coolants, gases obtained by said method and instalation thereof |
| 06/30/2004 | CN1509208A Catalyst containing copper and zinc for purifying ethylene |
| 06/30/2004 | CN1508126A Improved process for making surfactants via adsorption separation and products thereof |
| 06/30/2004 | CN1508106A Negative pressure adiabatic flash tank and adiabatic flash vaporizaiton method for tar phenylethylene recovery |
| 06/29/2004 | US6756516 Treatment of acid catalysts |
| 06/29/2004 | US6755979 Peroxide impurities removal |
| 06/29/2004 | US6755965 Ethane extraction process for a hydrocarbon gas stream |
| 06/24/2004 | WO2004052812A1 Methane recovery process |
| 06/24/2004 | WO2004052808A2 Separation of tertiary butyl alcohol from diisobutylene |
| 06/24/2004 | WO2004052492A1 Method and device for extractive distillation |
| 06/24/2004 | US20040122277 Atomized polysulfide used ethylene steam cracker |
| 06/24/2004 | US20040122275 Process for removing aldehydes and/or ketones from an olefinic stream |
| 06/24/2004 | US20040122268 of propylene and butylene; by two step fractionation; avoids the use of a hydrogenation reactor and makes the methyl acetylene and/or propadiene recoverable; making polypropylene from natural gas |
| 06/24/2004 | US20040118751 at least two catalysts having different sulfur compound affinities and/or specificities thereby improving the overall amount of sulfur compound removal; reduces sulfur content to 300 - less than 500 ppb |
| 06/24/2004 | DE10258160A1 Separation of hydrocarbon mixtures by extractive distillation with solvent comprises carrying out the process in partition wall column having partition wall that extends to the upper end of the column with lower common region |
| 06/23/2004 | EP1165473B1 Process for preparing 2,6-dialkylnaphtalene |
| 06/23/2004 | CN1154829C Rectified reflux deethanizer |
| 06/23/2004 | CA2415064A1 Selective chemical binding for olefins/paraffins separation |
| 06/22/2004 | US6753452 Removal of polar contaminants from aromatic feedstocks |
| 06/22/2004 | US6753286 Supported catalyst regeneration |
| 06/22/2004 | CA2093272C Catalyst containing a group viii metal and a group iiia metal deposited on a substrat |
| 06/17/2004 | WO2004050590A1 Method of separating olefins from mixtures with paraffins |
| 06/17/2004 | WO2004050549A1 Method of desulfurizing a hydrocarbon by partial oxidation |
| 06/17/2004 | US20040116756 Dehydrogenation, alkylation; using silicalite adsorber |
| 06/17/2004 | US20040113126 Regeneration of a phosphorus-containing sorbent |
| 06/17/2004 | CA2501145A1 Method of separating olefins from mixtures with paraffins |
| 06/16/2004 | EP1428568A1 Laminated zeolite composite and method for preparation thereof |
| 06/16/2004 | EP1427840A2 Enzymatic method for the enantiomeric resolution of amino acids |
| 06/16/2004 | CN1505599A Method of inhibiting polymerization of aromatic vinyl |
| 06/15/2004 | US6751527 Heat and material balance method of process control for petrochemical plants and oil refineries |
| 06/10/2004 | WO2003099961A3 Portable gas-to-liquids unit and method for capturing natural gas at remote locations |
| 06/09/2004 | CN1502595A Aromatics separation process and method of retrofitting existing equipment for same |
| 06/08/2004 | US6747181 Process for the hydrogenation of phenyl acetylene in a styrene-containing medium with the aid of a catalyst |
| 06/03/2004 | WO2004045767A2 Methods for preparing catalysts |
| 06/03/2004 | WO2004045745A1 Membrane separation process |
| 06/03/2004 | US20040106838 Use of ionic liquids to separate diolefins |
| 06/03/2004 | US20040106837 Method of desulfurizing a hydrocarbon |
| 06/03/2004 | US20040106834 reducing formation of polymers; alkali metal catalyst on an inorganic support is mechanically separated from the reaction mixture after the reaction and before distillation |
| 06/03/2004 | US20040106753 C-nitrosoaniline compounds and their blends as polymerization inhibitors |
| 06/03/2004 | US20040104146 C-nitrosoaniline compounds and their blends as polymerization inhibitors |
| 06/03/2004 | US20040103782 comprises pressure swing adsorber unit to remove volatile organic compounds from the crude feed gas mixture followed by membrane separation unit operation; for solid waste lanfillls |
| 06/02/2004 | CN1501900A Processes for the purification of higher diamondoids and compositions comprising such diamondoids |