发明名称 |
Treatment of sulphide contg. effluent waters with carbon dioxide - to give prod. with high hydrogen sulphide concn. suitable for sulphur recovery |
摘要 |
<p>Sulphide-contg. effluent water is treated with CO2 in counterflow in a multi-stage process whereby in a first stage the effluent is contacted with CO2 from the subsequent stage at a pressure of 2-7 atmos., the pressure is reduced to 0.3-1.5 atmos. and in a second stage the effluent is treated with a virtually stoichiometric amt. of CO2 from the subsequent stage (measured on total sulphide sulphur in the effluent), after which excess CO2, contg. small amts. H2S, is drawn off and in a third stage the effluent is treated with 1.5-5 times the stoichiometric amt. of fresh CO2. Provides a relatively cheap treatment with reduced energy consumption. The sulphide is recovered as gaseous H2S in high concns. allowing further processing to sulphur in a Clause unit. The sulphide concn. of the treated water is so low that it can be used directly without further treatment.</p> |
申请公布号 |
DE2610638(A1) |
申请公布日期 |
1976.11.04 |
申请号 |
DE19762610638 |
申请日期 |
1976.03.13 |
申请人 |
VEB CHEMIEANLAGENBAU STASSFURT |
发明人 |
ROLAND,KLAUS;GUENTHER,RAINER;PUSCH,HANS-JUERGEN |
分类号 |
C01B17/16;C02F1/66;(IPC1-7):C02C5/02 |
主分类号 |
C01B17/16 |
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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