Method for producing 1, 2-dichloroethane by direct chlorination
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United States of America Patent
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Mar 7, 2006
Grant Date -
Aug 11, 2005
app pub date -
Feb 1, 2003
filing date -
Feb 21, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method for producing high purity 1,2-dichloroethane using a liquid reaction medium that is circulated and that is essentially composed of 1,2-dichloroethane and a catalyst. At least ethylene and chlorine are added to the reaction medium and a mainly chlorine-containing gas flow is dissolved in a part of the reaction medium which is essentially devoid of dissolved ethylene. The gaseous components not dissolved in this solution are removed from the solution by means of a gas-separation device and the solution from which the undissolved gas components were removed is contacted with ethylene which is present in dissolved form.
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