Abstract:
The present invention relates to process for obtaining a catalyst composition that catalyzes a one-step synthesis of vinyl chloride from ethylene, wherein the catalyst composition comprises at least one rare earth metal. The invention relates also to a catalyst bed comprising said catalyst composition and a one-step process for the synthesis of vinyl chloride from ethylene.
Abstract:
The present invention provides an improved process for producing 1,1,2, 3-tetrachloropropene. By using a first reactive distillation column for HCC-250fb dehydrochlorination, and a second reactive distillation column for HCC-240db dehydrochlorination/HCC-1230xf isomerization, the 1,1,2, 3-tetrachloropropene manufacturing process can be greatly simplified, resulting in reduced equipment use, energy use, as well as increased productivity.
Abstract:
Process for the manufacture of EDC or Ethylene Di-Chloride by chlorination and/or oxychlorination of ethylene, said process comprising the purification of an EDC stream according to the following steps : - eventually removing the lower boiling impurities from the EDC stream so as to generate a stream of EDC substantially free from lower boiling impurities; - feeding this EDC stream to a heavy ends distillation column so as to get a top stream of substantially pure EDC and a bottom stream comprising higher boiling impurities and EDC, wherein the EDC stream fed to the heavy ends distillation column is at least partly heated up by a heater using waste heat available in the EDC manufacturing process itself or in a subsequent pyrolysis step of said EDC into vinyl chloride monomer or VCM or in an oxychlorination unit of ethylene to EDC.
Abstract:
Process for the hydrohalogenation of an unsaturated hydrocarbon and for the manufacture of vinyl chloride by hydrochlorination of acetylene Process for the hydrohalogenation of an unsaturated hydrocarbon using a catalyst comprising at least one ionic liquid (IL) and at least one metal, according to which said IL and metal are supported on a solid carrier, said process being a continuous industrial process wherein the overall unsaturated hydrocarbon conversion is of at least 60 % during at least 500 hours.
Abstract:
Process for the manufacture of at least one ethylene derivative compound starting from a low value residual gas, preferably a ROG, according to which : a) the low value residual gas is subjected to a series of treatment steps in a low value residual gas recovery unit in order to remove the undesirable components present therein and to obtain a mixture of products containing ethylene and other constituents; b) the said mixture of products is separated into a fraction enriched with compounds which are lighter than ethylene, containing part of the ethylene (fraction A), into a fraction enriched with ethylene (fraction B) and into a heavy fraction (fraction C); c) fraction A and fraction B are separately conveyed to the manufacture of at least one ethylene derivative compound.
Abstract:
Process for the manufacture of 1,2-dichloroethane starting with a hydrocarbon source according to which: a) the hydrocarbon source is subjected to cracking which produces a mixture of products containing ethylene and other constituents; b) the said mixture of products is separated into at least one fraction containing ethylene and into a heavy fraction (fraction C); c) the fraction or fractions containing ethylene are conveyed to a chlorination reactor and/or to an oxychlorination reactor, in which reactors most of the ethylene present is converted to 1,2-dichloroethane; d) the 1,2-dichloroethane obtained is separated from the streams of products derived from the chlorination and oxychlorination reactors and it is conveyed to the pyrolysis oven; and e) the fraction C is conveyed to cracking or to the oven for pyrolysis of 1,2-dichloroethane as fuel.
Abstract:
Process for the manufacture of 1,2-dichloroethane starting with a hydrocarbon source according to which : a) the hydrocarbon source is subjected to a first cracking step, namely a pyrolysis step carried out in a cracking oven, thus producing a mixture of cracking products; b) the said mixture of cracking products is subjected to a succession of treatment steps which make it possible to obtain a mixture of products containing ethylene and other constituents, among which an aqueous quenching step, an alkaline washing step aimed at removing at least most of the carbon dioxide generating an alkaline solution and an oxidation step aimed at removing the hydrogen sulphide contained in the mixture of cracking products; c) the mixture of products containing ethylene derived from step b) is separated into at least one fraction containing ethylene and into a heavy fraction; d) the fraction(s) containing ethylene is (are) conveyed to a chlorination reactor and/or an oxychlorination reactor, in which reactors most of the ethylene present is converted to 1,2-dichloroethane; e) the 1,2-dichloroethane obtained is separated from the streams of products derived from the chlorination and oxychlorination reactors.