发明名称 |
Process for the treatment of hydrogen sulfide, hydrogen cyanide and ammonia containing aqueous solutions. |
摘要 |
Aqueous solutions, which are contaminated by hydrogen sulphide, hydrogen cyanide and ammonia, are adjusted to a pH of about 3 or less directly after their formation to remove the contaminants and are treated in a stripping column with an inert gas. Thereupon, the pH of the solution is increased to about 10 or more and it is treated again in a second stripping column with an inert gas.
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申请公布号 |
EP0492329(A1) |
申请公布日期 |
1992.07.01 |
申请号 |
EP19910121491 |
申请日期 |
1991.12.14 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
MUELLER, THOMAS;FISCHER, ROLF-DIETER;GERHARDUS, ULRICH;LEDER, NORBERT;POLOSZYK, KLAUS;SCHNELLER, PETER, DR.;BRUNKE, WOLFGANG |
分类号 |
B01D19/00;C02F1/20;C02F1/58;C02F1/66;C02F1/72;C02F9/00;C02F101/10;C02F101/16;C02F101/18 |
主分类号 |
B01D19/00 |
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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