Process for purifying hydrogen chloride from pyrolysis of
1,2-dichloroethane
    1.
    发明授权
    Process for purifying hydrogen chloride from pyrolysis of 1,2-dichloroethane 失效
    从1,2-二氯乙烷热解纯化氯化氢的方法

    公开(公告)号:US4986975A

    公开(公告)日:1991-01-22

    申请号:US348283

    申请日:1989-05-05

    摘要: The invention is a multi-stage process for purifying hydrogen chloride containing acetylene and ethylene, from pyrolysis of 1,2-dichloroethane to provide highly pure hydrogen chloride for use in the preparation of silicon compounds. In the first stage, unsaturated by-products are chlorinated by reaction with an excess of chlorine gas. In the second stage, the unreacted chlorine gas remaining in the hydrogen chloride is reacted with an excess of defined olefins or chloroolefins and the hydrogen chloride is separated from the chlorination products and the excess olefins or chloroolefins by low-temperature rectification under pressure.

    摘要翻译: 本发明是用于从1,2-二氯乙烷的热解纯化含乙炔和乙烯的氯化氢的多阶段方法,以提供用于制备硅化合物的高纯度氯化氢。 在第一阶段,通过与过量的氯气反应来使不饱和副产物氯化。 在第二阶段中,残留在氯化氢中的未反应氯气与过量的定义的烯烃或氯代烯烃反应,并通过低压精馏在压力下将氯化氢与氯化产物和过量的烯烃或氯代烯烃分离。