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AssigneeVinnolit Technologie GmbH & Co. KG
InventorsJürgen Eichler, Reinhard Krumböck, Wenzel Kühn, Peter Schwarzmaier, Thomas Wild, Rudolf Spielmannleitner, Manfred Stöger, Ingolf Mielke
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Process and apparatus for preparing 1,2-Dichloroethane by direct chlorination If in the reaction of ethylene with chlorine to form 1,2-dichloroethane (EDC) the catalyst components sodium chloride and iron(III) chloride are used in a molar ratio of below 0.5, then the EDC is obtained in sufficiently high purity to allow direct conversion to vinyl chloride. With maintenance of the stated molar ratio the reaction can be carried out very advantageously in terms of equipment and energy consumption, for example by vaporizing some of the EDC in an expansion vessel.
A process for preparing 1,2-dichloroethane by reaction of ethylene with chlorine in the presence of a sodium chloride-iron(III) chloride catalyst, which comprises maintaining the molar ratio of sodium chloride to iron(III) chloride from 0.1 to below 0.5 during the whole reaction, wherein the reaction is carried out at a pressure of up to 1 bar gauge pressure and said gauge pressure is set by inert gas blanketing.
Dependencies are inferred from the claim text.