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AssigneeRhone-Progil
InventorsJean-Raymond Costes, Jean-Claude Strini, Serge Hardouin
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An improved process for the production of 1,2-dichloroethane in which chlorine and ethylene are reacted in the liquid phase in the absence of light and in the presence of a Lewis acid catalyst wherein all of the chlorine used in the reaction and a fraction of the total ethylene within the range of 90 to 100 mole percent based upon the total chlorine are introduced to a first homogeneous agitated reaction zone, the products from the first zone are passed to a second homogeneous agitated reaction zone into which there is also introduced the remaining ethylene in countercurrent flow to the flow of the 1,2-dichloroethane, with the total amount of ethylene introduced not exceeding 102 mole percent of the total chlorine.
In a process for the production of 1,2-dichloroethane in which chlorine and ethylene are reacted at a temperature within the range of 20.degree. to 80.degree. C in the absence of light radiation and in the presence of a Lewis acid catalyst and liquid 1,2-dichloroethane, the improvement comprising continuously introducing to a first homogeneous agitated reaction zone of 1,2-dichloroethane all of the chlorine used in the reaction and a fraction of the total ethylene within the range of 90 to 100 mole percent based on the total amount of chlorine, immediately passing the resulting products from the first zone to a second homogeneous, agitated reaction zone, introducing to the second zone the remaining ethylene countercurrently to the flow of 1,2-dichloroethane, with the total amount of ethylene introduced to the first and second zones not exceeding 102 mole percent of the total chlorine used and with both reaction zones being included in a single vessel, and recovering 1,2-dichloroethane from the second zone while venting not more than 1 mole percent of the ethylene based upon the total amount of ethylene introduced.
In a process for the production of 1,2-dichloroethane in which chlorine and ethylene are reacted at a temperature within the range of 20.degree. to 80.degree. C in the absence of light and in the presence of a Lewis acid catalyst and in the presence of liquid 1,2-dichloroethane, the improvement comprising continuously introducing to a first homogeneous agitated reaction zone of 1,2-dichloroethane all of the chlorine used in the reaction, said chlorine containing impurities including at least one of carbon dioxide, oxygen, nitrogen, hydrogen and carbon monoxide, and a fraction of the total ethylene within the range of 90 to 100 mole percent based on the total amount of chlorine, immediately passing the resulting products from the first zone to a second homogeneous agitated reaction zone, introducing to the second zone the remaining ethylene countercurrently to the flow of 1,2-dichloroethane, with the total amount of ethylene introduced to the first and second zones not exceeding 102 mole percent of the total chlorine used and with both reaction zones being included in a single vessel, and recovering 1,2-dichloroethane while venting from the second zone a mixture of ethylene and the impurities in the chlorine, with the ethylene constituting not more than one mole percent of the total ethylene supplied to the reaction zones based upon the total amount of ethylene introduced.
In a process for the production of 1,2-dichloroethane in which chlorine and ethylene are reacted at a temperature within the range of 20.degree. to 80.degree. C in the absence of light radiation and in the presence of a Lewis acid catalyst and liquid 1,2-dichloroethane, the improvement comprising continuously introducing to a first homogeneous agitated reaction zone of 1,2-dichloroethane all of the chlorine used in the reaction and a fraction of the total ethylene within the range of 90 to 100 mole percent based on the total amount of chlorine, immediately passing the resulting products from the first zone through distributor means to a second homogeneous, agitated reaction zone, introducing to the second zone the remaining ethylene countercurrently to the flow of 1,2-dichloroethane, with the total amount of ethylene introduced to the first and second zones not exceeding 102 mole percent of the total chlorine used and with both reaction zones being included in a single vessel, and recovering 1,2-dichloroethane from the second zone while venting not more than 1 mole percent of the ethylene based upon the total amount of ethylene introduced.
In a process for the production of 1,2-dichloroethane in which chlorine and ethylene are reacted at a temperature within the range of 20.degree. to 80.degree. C in the absence of light and in the presence of a Lewis acid catalyst and in the presence of liquid 1,2-dichloroethane, the improvement comprising continuously introducing to a first homogeneous agitated reaction zone of 1,2-dichloroethane all of the chlorine used in the reaction, said chlorine containing impurities including at least one of carbon dioxide, oxygen, nitrogen, hydrogen and carbon monoxide, and a fraction of the total ethylene within the range of 90 to 100 mole percent based on the total amount of chlorine, immediately passing the resulting products from the first zone through distributor means to a second homogeneous agitated reaction zone, introducing to the second zone the remaining ethylene countercurrently to the flow of 1,2-dichloroethane, with the total amount of ethylene introduced to the first and second zones not exceeding 102 mole percent of the total chlorine used and with both reaction zones being included in a single vessel, and recovering 1,2-dichloroethane while venting from the second zone a mixture of ethylene and the impurities in the chlorine, with the ethylene constituting not more than one mole percent of the total ethylene supplied to the reaction zones based upon the total amount of ethylene introduced.
Dependencies are inferred from the claim text.