发明名称 |
Process for purifying waste water containing ammonium sulfate |
摘要 |
This process for purifying waste-water containing ammonium sulfate comprises reacting said waste-water with calcium oxide, calcium sulfide and ammonium sulfite; roasting the resulting precipitate to regenerate calcium oxide and calcium sulfide; and reacting sulfur dioxide with hydrogen sulfide obtained in a prior step to yield sulfur.
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申请公布号 |
US4058591(A) |
申请公布日期 |
1977.11.15 |
申请号 |
US19750607802 |
申请日期 |
1975.08.26 |
申请人 |
INSTITUT FRANCAIS DU PETROLE |
发明人 |
BUSSON, CHRISTIAN;ALAGY, JACQUES;CESSOU, MAURICE |
分类号 |
C01B17/02;C01B17/05;C01B17/06;C02F1/58;(IPC1-7):C01B17/02;C02B1/34;C02C5/06 |
主分类号 |
C01B17/02 |
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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