发明名称 |
IMPROVED COMPOSITION AND METHOD FOR REMOVAL OF CARBONYL SULFIDE FROM ACID GAS CONTAINING SAME |
摘要 |
<p>Novel solvent composition for selective removal of COS from a gas stream containing same, said composition comprising a) at least one polyalkylene glycol alkyl ether of the formula (I) or 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone or a mixture of N-formylmorpholine and N-acetylmorpholine Wherein R1 is an alkyl group having from 1 to 6 carbon atoms; R2 is hydrogen or an alkyl group having from 1 to 4 carbon atoms; Alk is an alkylene group, branced or unbranced, having from 2 to 4 carbon atoms, and n is from 1 to 10; and b) at least one alkanolamine compound of the formula (II) or at least one piperazine compound of formula (III) wherein R3 is hydrogen, an alkyl group having from 1 to 6 carbon atoms, or the R4OH group; R4 is a branched or unbranched alkylene group having from 1 to 6 carbon atoms; R5, independently in each occurrence, is hydrogen or an hydroxyalkyl group having from 1 to 4 carbon atoms; and R6 is hydrogen, an alkyl group having from 1 to 6 carbon atoms or an hydroxyalkyl group having from 1 to 4 carbon atoms. </p> |
申请公布号 |
WO2004085033(A2) |
申请公布日期 |
2004.10.07 |
申请号 |
WO2004US07453 |
申请日期 |
2004.03.11 |
申请人 |
DOW GLOBAL TECHNOLOGIES INC.;SCHUBERT, CRAIG, N.;ASHCRAFT, ARNOLD, C. |
发明人 |
SCHUBERT, CRAIG, N.;ASHCRAFT, ARNOLD, C. |
分类号 |
B01D53/14;B01D53/48;(IPC1-7):B01D53/00 |
主分类号 |
B01D53/14 |
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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