发明名称 |
Production of 1,2-dichloroethane |
摘要 |
1,2-dichloroethane is made by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and a gas containing molecular oxygen in gas phase, at elevated temperature and in contact with a fluidized bed copper-II-chloride catalyst on a carrier, wherein the reaction gases are cooled under pressure in two condensation stages, condensed 1,2-dichloroethane and water are removed and the bulk of unreacted starting gas and inert gas are recycled. More specifically the reaction gases are delivered to a third condensation stage and cooled therein under pressure down to a temperature within the range 5 DEG to 18 DEG C. and to the extent necessary for the recycle gas to contain 0.5 to 3 volume % of 1,2-dichloroethane. Next, the recycle gas is directly admixed upstream of the reactor, with a quantity of pure oxygen necessary to replace consumed oxygen and re-establish an oxygen content of 12 to 25 volume % therein.
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申请公布号 |
US4310713(A) |
申请公布日期 |
1982.01.12 |
申请号 |
US19780898711 |
申请日期 |
1978.04.24 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
LEGUTKE, GUENTER;RECHMEIER, GERHARD H.;SCHOLZ, HARALD;SCHUCHARDT, KURT;HOELLER, ERNST;LIESENFELDER, GUENTHER |
分类号 |
B01J27/00;C07B61/00;C07C17/00;C07C17/156;C07C19/045;C07C67/00;(IPC1-7):C07C17/15 |
主分类号 |
B01J27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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