发明名称 |
Process for the preparation of butanediol, butyrolactone and tetrahydrofuran |
摘要 |
Butane-1,4-diol, gamma-butyrolactone or tetrahydrofuran are prepared by vapor phase hydrogenation of a C4-dicarboxylic acid derivative. A maleic anhydride containing vapor stream is contacted in an absorption zone with a first high boiling solvent. A waste gas stream is passed to a scrubbing zone containing a second, higher boiling solvent. The waste gas is purged and the first and second solvents are recovered and recycled. Maleic anhydride is obtained from the absorption zone and converted to a maleic acid diester, which is stripped from the first solvent with hydrogen. The desired products are obtained by hydrogenation.
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申请公布号 |
US6274743(B1) |
申请公布日期 |
2001.08.14 |
申请号 |
US20000555015 |
申请日期 |
2000.06.29 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
TUCK MICHAEL W. M.;EASTLAND PHILIP H. D.;HILES ANDREW G.;REED GRAHAM |
分类号 |
C07B61/00;C07C29/149;C07C29/17;C07C31/20;C07C67/08;C07C69/60;C07D307/08;C07D307/20;(IPC1-7):C07D307/02 |
主分类号 |
C07B61/00 |
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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