发明名称 |
Removal of sulfur from waste gas streams |
摘要 |
Preferential sulfur dioxide absorption solvents may be buffered with suitable agents, such as alkanolaminium carboxylates, to substantially retard or eliminate the tendency of such solvents to degrade or accumulate non-regenerable salts, particularly sulfates, when loaded with absorbed sulfur dioxide. A method for employing the buffer as an immiscible aqueous phase as a separate trimming solvent to selectively absorb residual sulfur dioxide from a gas stream from which the bulk amount of sulfur dioxide is first removed by contact with a trialkyl phosphate solvent is disclosed. The method permits the trialkyl phosphate solvent to be regenerated and purged of salts at lower energy requirements.
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申请公布号 |
US4320101(A) |
申请公布日期 |
1982.03.16 |
申请号 |
US19800209719 |
申请日期 |
1980.11.24 |
申请人 |
TRENTHAM CORPORATION |
发明人 |
TRENTHAM, H. LEE;CROW, JOHN H.;BOSTON, FARWELL C. |
分类号 |
B01D53/50;C01B17/60;(IPC1-7):C01B17/00 |
主分类号 |
B01D53/50 |
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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