发明名称 |
Process for the removal of ammonium sulphate from tarrich waste streams from the production of (meth) acrylonitrile |
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 DEG -60 DEG 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.
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申请公布号 |
US5141732(A) |
申请公布日期 |
1992.08.25 |
申请号 |
US19910683500 |
申请日期 |
1991.04.04 |
申请人 |
EC ERDOLCHEMIE GMBH |
发明人 |
HAARDT, HANS-JUERGEN;HERWIG, JENS;NEEB, ERNST-FRIEDRICH |
分类号 |
C01C1/24;C07C253/34;C07C255/08;C10C1/20 |
主分类号 |
C01C1/24 |
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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