Process for the removal of ammonium sulphate from tarrich waste streams
from the production of (meth) acrylonitrile
    2.
    发明授权
    Process for the removal of ammonium sulphate from tarrich waste streams from the production of (meth) acrylonitrile 失效
    从生产(甲基)丙烯腈的焦油废物流中除去硫酸铵的方法

    公开(公告)号:US5141732A

    公开(公告)日:1992-08-25

    申请号:US683500

    申请日:1991-04-04

    CPC分类号: C01C1/24 C07C253/34

    摘要: The ammonium sulphate contained in tar-rich waste streams from the production of (meth)acrylonitrile can be precipitated out by adding 1 to 30 times the amount by weight of methanol, relative to the water content of the waste stream, and additionally 0.05 to 10% the amount by weight of ammonia, relative to methanol, to such a waste stream at 10.degree.-60.degree. C. and separating off the ammonium sulphate which precipitates out. The waste stream remaining after separating off the ammonium sulphate can, for example, be disposed of as low-sulphur waste-fuel in a combustion chamber.

    摘要翻译: 从生产(甲基)丙烯腈生成的富含焦油的废物流中含有的硫酸铵可以相对于废物流的水含量加入1至30倍的甲醇重量来析出,另外0.05至10 相对于甲醇的氨的重量百分数为10至60℃的这种废物流,并将析出的硫酸铵分离出来。 在分离出硫酸铵后残留的废物流可以例如在燃烧室中作为低硫废物处理。