| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 06/02/2004 | CN1501840A Process for selective hydrogenation of alkynes and catalyst therefor |
| 06/02/2004 | CA2450169A1 Use of ionic liquids to separate diolefins |
| 06/01/2004 | US6743290 Compositions comprising undecamantanes and processes for their separation |
| 06/01/2004 | CA2094187C Process for purifying phenol |
| 05/27/2004 | WO2004043888A1 Process for the selective hydrogenation of alkynes |
| 05/27/2004 | US20040102666 Saturation of vinyl acetylene, ethyl acetylene, propyl acetylene or acetylene in crude butadiene streams in the hydrogenation catalyst, then distilling and recovering the effluents |
| 05/27/2004 | US20040099138 Extraction of methane from crude gases comprising carbon dioxide and volatile organic compounds, using gas apparatus having permselective separators |
| 05/26/2004 | EP1421313A2 Dewatering device and method for gas hydrate slurrys |
| 05/26/2004 | EP1421146A1 Molecular tags for organic solvent systems |
| 05/26/2004 | EP1421049A1 Process of removing contaminants from an olefin stream using extractive distillation |
| 05/26/2004 | EP1421048A1 Process for producing branched olefins from linear olefin / paraffin feed |
| 05/26/2004 | EP1421047A1 A process for the production of triptane |
| 05/26/2004 | EP1421044A1 Inhibiting catalyst coke formation in the manufacture of an olefin |
| 05/26/2004 | CN1151114C Process for recovery and comprehensive utilization of by-product oil from hydration method synthesis of camphor |
| 05/26/2004 | CN1150966C Variable adsorption process for separating methane/nitrogen gas mixture with large-surface activated carbon |
| 05/25/2004 | US6740787 Process for treatment of C4 hydrocarbons that comprise butadiene and acetylene compounds that comprise stages for distillation and selective hydrogenation |
| 05/20/2004 | US20040097773 Using a solid acidic ion exchange resin containing, for example, sulfonic acid groups, some of whose protons have been exchanged for metal ions. |
| 05/20/2004 | US20040097760 Olefin streams are purified by converting ethers such as ethyl methyl ether to other oxygenates and optionally hydrogenating alkynes and/or alkadienes present to form olefins |
| 05/19/2004 | EP1419141A1 Stabilisation of ethylenically-unsaturated compounds with amidoximes |
| 05/19/2004 | DE10250468A1 Verfahren zur Herstellung von Oligomeren abgeleitet von Butenen A process for the preparation of oligomers derived from butenes |
| 05/19/2004 | CN1496760A Purification device and method |
| 05/18/2004 | US6737558 Adding solvent to crystallize and cooling of the mixture to a temperature higher than the formation value of the first eutectic, removal of the mother liquor by repeated washings, dissolving solid obtained, cooling to crystallize, filtration |
| 05/13/2004 | WO2004039757A2 Method for producing oligomers derived from butenes |
| 05/13/2004 | US20040092783 Process for the selective hydrogenation of alkynes |
| 05/13/2004 | US20040089586 C-nitrosoaniline compounds and their blends as polymerization inhibitors |
| 05/13/2004 | CA2504406A1 Method for producing oligomers derived from butenes |
| 05/12/2004 | CN1495149A Coproduction method of paraxylene and styrene |
| 05/11/2004 | US6734333 Dimerization of isobutene via acid catalyst; debutanizers |
| 05/11/2004 | US6734332 Contacting polyaromatic compound with mixed olefins to form adduct; separation; dissociation |
| 05/11/2004 | US6734328 Process for the selective hydrogenation of alkynes |
| 05/11/2004 | US6734130 Hydrocarbon hydrogenation catalyst composition, a process of treating such catalyst composition, and a process of using such catalyst composition |
| 05/11/2004 | US6733573 Catalyst allowing conversion of natural gas hydrate and liquid CO2 to CO2 hydrate and natural gas |
| 05/11/2004 | US6733572 Adsorbent comprising a porous crystalline material having differentdiffusion time constants for dimethylether and propylene |
| 05/11/2004 | CA2043075C Dicyclopentadiene activation method and polymerization composition |
| 05/06/2004 | WO2004037754A2 Stabilization of olefin metathesis product mixtures |
| 05/06/2004 | WO2002010100A3 Recycle of nitroxyl-containing streams at low temperature |
| 05/06/2004 | EP1414872A2 Optimization of heat removal in a gas-phase fluidized-bed process |
| 05/06/2004 | CA2814266A1 Stabilization of olefin metathesis product mixtures |
| 05/06/2004 | CA2501627A1 Stabilization of olefin metathesis product mixtures |
| 05/05/2004 | CN1494520A Compositions comprising higher diamondoids and processes for their separation |
| 04/29/2004 | US20040082823 Method of hydrocarbon stabilization |
| 04/27/2004 | US6727399 Contacting feedstock with linear polyaromatic compound to form adduct with linear alpha olefin; dissociating |
| 04/27/2004 | US6727398 Methods and systems for purifying styrene feedstock comprising use of low palladium catalyst |
| 04/22/2004 | WO2004033697A2 Method of removing entrained sulfuric acid from alkylate |
| 04/22/2004 | WO2004033598A1 Process for the removal of oxygen from olefin-containing process streams |
| 04/22/2004 | WO2004033400A1 Method for separating butenes and butanes by extractive distillation provided with a polar extraction agent |
| 04/22/2004 | WO2004033399A1 Process for the manufacture of a gasoline blending component |
| 04/22/2004 | US20040077910 Process for the utilization of refinery C4 streams |
| 04/22/2004 | US20040077502 Stable ethylene inhibiting compounds and methods for their preparation |
| 04/22/2004 | DE10296268T5 Entfernung von Verunreinigungen aus Kohlenwasserstoffströmen Removal of contaminants from hydrocarbon streams |
| 04/22/2004 | DE10247417A1 Crosslinkable copolyimide consisting mainly of repeating units derived from dianhydrides useful as membranes for separating various materials at high feed pressures with high selectivity and high permeability |
| 04/22/2004 | CA2501305A1 Method of removing entrained sulfuric acid from alkylate |
| 04/21/2004 | CN1491196A Method for recovering crude 1,3-butadiene by extracting distillation from C4 cut |
| 04/21/2004 | CN1491194A Para-xylene and ethylbenzene separation from mixed C8 aromatics |
| 04/21/2004 | CN1490286A Separating method for cracking C5-fraction |
| 04/20/2004 | US6723888 Humidification of hydrocarbon mixtures for use in polymer synthesis |
| 04/15/2004 | WO2004031107A1 Method for the production of at least one partial propylene oxidation and/or ammoxidation product |
| 04/15/2004 | WO2004031106A1 Method for the production of at least one partial propylene oxidation and/or ammoxidation product |
| 04/15/2004 | US20040073076 Integrated olefin recovery and hydrogen production from refinery off-gases |
| 04/15/2004 | US20040073035 Removal by salt formation |
| 04/15/2004 | US20040069609 Purification apparatus and method |
| 04/15/2004 | US20040069015 Method for ethane recovery, using a refrigeration cycle with a mixture of at least two coolants, gases obtained by said method, and installation therefor |
| 04/15/2004 | DE10246220A1 Separation of a 2C rich fraction from a hydrocarbon rich fraction comprises acid-gas washes in which identical washing agents are used with regeneration in a common regeneration unit |
| 04/14/2004 | CN1145599C Technological process and apparatus for preparing enriched methane gas by utilizing refuse marsh gas |
| 04/13/2004 | US6720468 By reacting with a diels-alder dienophile to provide a fluid comprising a diels-alder adduct and monoolefins; and recovering a resulting monoolefin-containing fluid |
| 04/08/2004 | WO2004028665A1 Method and system for separating a component from a multi-component gas |
| 04/08/2004 | WO2004020068A3 Method of optimising the operation of a xylene separation unit using simulated countercurrent |
| 04/08/2004 | WO2003020671A9 High pressure separation of dimethyl ether from an olefin stream |
| 04/08/2004 | US20040068155 Obtaining anthracene and carbazole by melt-crystallization |
| 04/08/2004 | US20040067550 Method for the production of beta-carotene |
| 04/08/2004 | US20040065538 Method for recovering crude 1,3-butadiene by extractive distillation from a c4 cut |
| 04/08/2004 | DE10245585A1 Preparation of partial oxidation or ammoxidation product of propylene, e.g. acrolein, involves subjecting dehydrogenated crude propane in the presence of unconverted propane to heterogeneously catalyzed gas phase partial reaction |
| 04/08/2004 | CA2497317A1 Method and system for separating a component from a multi-component gas |
| 04/07/2004 | CN1487910A Obtaining anthracene and carbazole by melt-crystallization |
| 04/07/2004 | CN1486966A Light benzol producing process in four serially connected towers |
| 04/06/2004 | US6717025 Process for removing oxygenates from an olefinic stream |
| 04/06/2004 | US6717022 Process for selective hydrogenation of alkynes and catalyst therefor |
| 04/01/2004 | US20040064009 Method for separating dimethyl ether from an olefin-containing product stream |
| 04/01/2004 | US20040063989 Preparation of at least one partial oxidation and/or ammoxidation product of propylene |
| 04/01/2004 | US20040063988 Preparation of at least one partial oxidation and/or ammoxidation product of propylene |
| 04/01/2004 | US20040063932 Stable free nitroxyl radicals as oxidation catalysts and process for oxidation |
| 04/01/2004 | US20040060438 Strongly water soluble reagent (e.g., SO3 that may be formed from SO2 and H2O2) dissolves some of the methane hydrate to form a layer of dilute aqueous solution between methane hydrate and liquid CO2, releasing surface methane gas |
| 03/31/2004 | EP1402932A1 Purification apparatus and method |
| 03/31/2004 | EP1401793A1 Environmentally safe alkylation of aliphatic and aromatic hydrocarbons with olefins using solid hf-equivalent catalysts |
| 03/31/2004 | EP1280749B1 Removal of phosphorus-containing impurities from an olefin feedstock |
| 03/31/2004 | CN1143841C Process for preparing high-purity butylene-1 from sulfur-contained c4 fraction |
| 03/25/2004 | US20040059175 Method and devices for producing naphthalene from coke produced from coke oven crude gas |
| 03/25/2004 | US20040059172 Method of removing entrained sulfuric acid from alkylate |
| 03/25/2004 | US20040058799 Process for the preparation of a thin zeolite membrane |
| 03/24/2004 | EP1332414A4 Heat and material balance method of process control for petrochemical plants and oil refineries |
| 03/24/2004 | EP1154845B1 Use of ethoxylated glyceride mixtures as emulsifiers for producing paraffin hydrocarbon emulsions |
| 03/24/2004 | EP1137616B1 Low temperature separation of hydrocarbon gas |
| 03/18/2004 | WO2003016249A8 Process for producing branched olefins from linear olefin / paraffin feed |
| 03/18/2004 | US20040054243 Processes for concentrating higher diamondoids |
| 03/18/2004 | DE10242923A1 Separation of butenes and butanes by extractive distillation with a polar extractant comprises extractive distillation of a butene and butane containing stream with a polar extractant with recycle of the polar extractant |
| 03/17/2004 | EP1398311A1 Recovery of phytonutrients from palm oil |
| 03/17/2004 | EP1398070A1 Separation by membrane processes with thermal conditioning of the feed mixture |
| 03/17/2004 | EP1397209A1 Catalysts containing copper and zinc for the purification of ethylene |
| 03/17/2004 | EP1397203A1 Method for the production of adsorption agent granules based on acid-activated laminar silicates and use thereof as catalyst |
| 03/17/2004 | EP0850209B1 Method for inhibiting hydrate formation |