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| Number | Title | Issue Date |
| 7309804 | Process for purifying 1,2-dichloroethane A process for the preparation of 1,2-dichloroethane that is very pure with respect to chloral or/and chloral hydrate and carbon dioxide is described herein. The process comprises oxychlorination of ethylene, using hydrogen chloride and an oxygen-containing gas, and ... | 12/18/2007 |
| 7141708 | Hollow pellet suitable as carrier of catalysts for selective exothermic reactions A hollow catalyst pellet for use in selective gas phase exothermic reactions in a tubular fixed bed reactor, having a parallelogram shaped external cross-section. ... | 11/28/2006 |
| 6933417 | Process for vinyl chloride manufacture from ethane and ethylene with partial CHl recovery from reactor effluent A process for producing vinyl chloride monomer from ethylene and ethane having input of significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is only partially recovered from the... | 08/23/2005 |
| 6909024 | Process for the conversion of ethylene to vinyl chloride and novel catalyst compositions useful for such process This invention is a process for producing vinyl chloride from an ethylene-containing feed, oxygen, and a chlorine source in the presence of a catalyst. The process permits direct production of vinyl chloride in a single reactor system, and further permits ethane to ... | 06/21/2005 |
| 6900363 | Method for the production of 1,2-dichloroethane A process for preparing 1,2-dichloroethane which comprises (A) feeding an ethane-containing feed gas stream into a dehydrogenation zone and dehydrogenating ethane to ethane to give a product gas stream comprising ethane, ethane and... | 05/31/2005 |
| 6872684 | Catalysts for oxychlorination of ethylene to 1,2-dichloroethane Catalysts for oxychlorination of ethylene to 1,2-dichloroethane, comprising compounds of copper and magnesium supported on alumina, in which the copper, expressed as metal, is present in an amount of 7 to 12% by weight and the Mg/Cu ratio is 0.05 to 1, and wherein t... | 03/29/2005 |
| 6821924 | Oxyhalogenation process using catalyst having porous rare earth halide support An oxidative halogenation process involving contacting a hydrocarbon, for example, ethylene, or a halogenated hydrocarbon with a source of halogen, such as hydrogen chloride, and a source of oxygen in the presence of a catalyst so as to form a halocarbon, preferably... | 11/23/2004 |
| 6803342 | Catalytic composition and process for the oxychlorination of ethylene using such a composition Catalytic composition comprising copper chloride, magnesium chloride and potassium chloride deposited on an alumina, which may be used in particular for the oxychlorination of ethylene into 1,2-dichloroethane. In the processes for the oxychlorination of ethylene in ... | 10/12/2004 |
| 6680415 | Oxyhalogenation process using catalyst having porous rare earth halide support An oxidative halogenation process involving contacting a hydrocarbon, for example, ethylene, or a halogenated hydrocarbon with a source of halogen, such as hydrogen chloride, and a source of oxygen in the presence of a catalyst so as to form a halocarbon,... | 01/20/2004 |
| 6680416 | Supported catalyst containing pseudo-boehmite and γ-Al2O3, production of same and its use for producing 1,2-dichloroethane A process for preparing 1,2-dichloroethane by reacting about 2 mols of ethylene, about 4 mols of hydrogen chloride and about 1 mol of oxygen in the presence of a fixed bed of supported catalyst based on copper(II) chloride in only one reaction zone at a p... | 01/20/2004 |
| 6593269 | Catalysts for exothermic reactions on a fixed bed Catalysts for exothermic reactions conducted in a fixed bed, comprising an inert diluent constituted by metal granules in which the metal has a thermal conductivity of more than 0.5 W/cm/K, particularly catalysts for the oxychlorination of ethylene to 1,2... | 07/15/2003 |
| 6465701 | Catalyst and oxychlorination process using it The present invention provides a cylindrical hollow moulded catalyst having an outer diameter ranging from about 4 mm to about 7 mm, an inner diameter ranging from about 2 mm to about 2.8 mm, length ranging from about 6.1 mm to about 6.9 mm, and the ratio... | 10/15/2002 |
| 6452058 | Oxidative halogenation of C1 hydrocarbons to halogenated C1 hydrocarbons and integrated processes related thereto An oxidative halogenation process involving contacting a reactant hydrocarbon selected from methane, a halogenated C1 hydrocarbon, or a mixture thereof with a source of halogen and, preferably, a source of oxygen in the presence of a rare earth... | 09/17/2002 |
| 6452059 | Catalysts for the oxi-chlorination of ethylene to 1,2-dichloroethane A catalyst for the oxi-chlorination of ethylene to 1,2-dichloroethane which comprises cupric oxychloride (CuOHCl) as an active component. CuOHCl is preferably supported on a porous support such as alumina and used in fixed-bed oxi-chlorination processes.... | 09/17/2002 |
| 6191329 | Process for specific energy saving, especially in the oxychlorination of ethylene A process for specific energy saving, especially in processes involving the oxychlorination of ethylene, facilitates recovery of as much sensible heat to be used for other purposes. In the process the gas mixture leaving the oxychlorination reactor is coo... | 02/20/2001 |
| 6177599 | Method for reducing formation of polychlorinated aromatic compounds during oxychlorination of C1-C3 hydrocarbons An improved process is disclosed for manufacturing chlorinated hydrocarbon by way of oxychlorination which yields reduced levels of environmental toxins such as, chlorobenzenes, polychlorinated biphenyls, polychlorinated dibenzodioxins and polychlorinated... | 01/23/2001 |
| 5905054 | Catalysts for the oxichlorination of ethylene, method for preparing them, and oxichlorination method using the same Catalysts for the oxichlorination of ethylene to 1,2-dichlorethane, comprising copper chloride as a main component, in the form of hollow cylindrical granules having at least three through holes, obtained by compression forming by using, for lubrication, ... | 05/18/1999 |
| 5905177 | Method for producing 1,2-dichloroethane In a method for producing 1,2-dichloroethane by an oxychlorination reaction of ethylene, hydrogen chloride and oxygen, a continuous method for producing 1,2-dichloroethane, which comprises cooling a gas discharged from an oxychlorination reactor to conden... | 05/18/1999 |
| 5841009 | Oxychlorination of ethylene in two stage fixed-bed reactor In the oxychlorination of ethylene to produce 1,2-dichloroethane (EDC), in which ethylene, a chlorine source and an oxygen source are reacted in a fixed-bed oxychlorination reactor in the presence of a catalyst, a twin reactor system is used and the catal... | 11/24/1998 |
| 5750812 | Method for reducing formation of polychlorinated aromatic compounds during air oxychlorination of C1 -C3 Hydrocarbons An improved process is disclosed for manufacturing chlorinated hydrocarbon by way of a once-through air-based oxychlorination process which yields reduced levels of environmental toxins such as chlorobenzenes, polychlorinated biphenyls, polychlorinated di... | 05/12/1998 |
| 5600043 | Oxychlorination process The subject invention relates to a process for oxychlorination of ethylene to produce 1,2-dichloroethane. The process comprises contacting a mixture of ethylene, oxygen or oxygen containing gas and hydrogen chloride with a fixed or fluidized catalyst comp... | 02/04/1997 |
| 5527754 | Catalytic composition and process for the oxychlorination of ethylene using such a composition Catalytic composition comprising copper chloride, magnesium chloride and caesium chloride deposited on an alumina, which may be used in particular for the oxychlorination of ethylene into 1,2-dichloroethane. In the processes for the oxychlorination of eth... | 06/18/1996 |
| 5382726 | Catalyst and process for oxychlorination of ethylene to EDC The subject invention relates to catalyst compositions for oxychlorination of ethylene to produce 1,2-dichloroethane. The catalysts comprise copper chloride, at least one alkali metal, at least one rare earth metal, and at least one Group IIA metal on a h... | 01/17/1995 |
| 5315051 | Process for the oxychlorination of ethylene and catalyst compositions for the oxychlorination The invention relates to a process for the oxychlorination of ethylene by means of a catalyst composition comprising an alumina support impregnated with cupric chloride, magnesium chloride and a chloride of an alkali metal chosen from sodium and lithium. ... | 05/24/1994 |
| 5227548 | Oxychlorination of ethylene to 1,2-dichloroethane A process for the oxychlorination of ethylene to 1,2-dichloroethane using an oxychlorination catalyst composition comprising a mixture of copper chloride, magnesium chloride and potassium chloride carried on a support therefor.... | 07/13/1993 |
| 5202511 | Catalyst diluent for oxychlorination process Alumina is used as a support for the CuCl2 catalyst and as a diluent in the oxychlorination of ethylene. When a low surface area alumina, e.g. high purity alpha-alumina, is used as diluent for the reaction, reduced oxidation and less chlorinated by-produc... | 04/13/1993 |
| 5175382 | Preparation of 1,2-Dichloroethane 1,2-Dichloroethane is prepared by reacting ethylene, hydrogen chloride and oxygen or an oxygen-containing gas in the presence of a copper-containing catalyst by a process in which first hydrogen chloride and oxygen or an oxygen-containing gas are reacted ... | 12/29/1992 |
| 5157174 | Ternary molybdenum chalcogenide oxychlorination catalysts Hydrocarbons are oxychlorinated by reaction with gaseous HCl and an oxygen-containing gas, in the presence of a catalytically effective amount of a ternary copper/molybdenum chalcogenide having the formula: Cux Mo6 Ch8 wherein ... | 10/20/1992 |
| 5099085 | Chlorination reactions and oxychlorination reactions in the presence of honeycomb monolithic catalyst supports The use of hitherto known supported catalysts in chlorination processes and oxychlorination processes leads to high pressure drops and to the formation of hot spot temperatures in the reactor. When honeycomb monolithic catalyst supports provided with a mu... | 03/24/1992 |
| 5087779 | Hydrocarbon halogenation A method for halogenating hydrocarbons wherein a reaction mixture including a hydrocarbon-containing feed, a hydrogen halide and an oxygen-containing gas is contacted at appropriate reaction conditions with a catalyst of copper aluminum borate to form hal... | 02/11/1992 |
| 4910354 | Process for the oxychlorination of ethylene and catalyst compositions for the oxychlorination The invention relates to a process for the oxychlorination of ethylene by means of a catalyst composition comprising an alumina support impregnated with cupric chloride, magnesium chloride and a chloride of an alkali metal chosen from sodium and lithium. ... | 03/20/1990 |
| 4849562 | Process for producing ethylene dichloride The oxychlorination process for producing ethylene dichloride is carried out by reacting ethylene with hydrogen chloride and oxygen in an oxychlorination reactor. Thereby, ethyl chloride and perhaps vinyl chloride are produced as by-products. The effluent... | 07/18/1989 |
| 4814527 | Catalytic process for ethylene dichloride Monosubstituted saturated lower hydrocarbons are oxyhalogenated selectively to saturated dihalohydrocarbons at 180°-350° C. in the presence of a catalyst which is formed by depositing a variable valence metal compound on a zeolitic support in such a man... | 03/21/1989 |
| 4788359 | Process and apparatus for recovering 1,2-dichloroethane from off-gas 1,2-dichloroethane is continuously and completely removed and recovered from the off-gas obtained during the production of 1,2-dichloroethane by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and oxygen. The off-gas is initially... | 11/29/1988 |
| 4760207 | Recovery of ethylene, chlorine and HCl from vented waste gas from direct chlorination reactor In a process for producing 1,2-dichloroethane or ethylene dichloride ("EDC") in a high temperature direct chlorination ("HTDC") reactor in which ethylene is reacted with wet chlorine having a water content more than 100 ppm but no more than 1% by wt of th... | 07/26/1988 |
| 4754088 | Process for oxychlorination of ethylene In a process for preparation of 1,2-dichloroethane by chlorination of ethylene-containing reaction vent gases from the oxychlorination of ethylene in the presence of a catalyst carrier impregnated with metal compounds wherein the waste from the oxychlorin... | 06/28/1988 |
| 4740644 | Preparation of 1,2-dichloroethane by oxychlorination of ethylene over a copper-containing supported catalyst 1,2-Dichloroethane is prepared by oxychlorination of ethylene in the presence of a catalyst which contains, on a conventional carrier, copper(II) chloride in a concentration such that the amount of copper ions is from 1 to 20% by weight, based on the tota... | 04/26/1988 |
| 4584123 | Process for upgrading hydrogen chloride containing chlorine, iron-III-chloride, ethylene and/or acetylene A process of upgrading hydrogen chloride which contains chlorine, iron-III-chloride, acetylene and/or ethylene, for use in an oxichlorination process, wherein water in a gaseous state is added to the hydrogen chloride at temperatures between 120° and 180... | 04/22/1986 |
| 4467127 | Process for the oxychlorination of an alkane using a solid solution catalyst containing iron cations An alkane is reacted with oxygen and available chlorine in the presence of a solid solution catalyst containing iron cations to yield unsaturated hydrocarbons and chlorinated saturated and unsaturated hydrocarbons. In a preferred embodiment of the process... | 08/21/1984 |
| 4461919 | Process for the oxychlorination of an alkane using a solid solution catalyst containing iron cations An alkane is reacted with oxygen and available chlorine in the presence of a solid solution catalyst containing iron cations to yield unsaturated hydrocarbons and chlorinated saturated and unsaturated hydrocarbons. In a preferred embodiment of the process... | 07/24/1984 |
