发明名称 |
Process for preparing saturated carboxylic acids having from 1 to 4 carbon atoms from butenes and butanes |
摘要 |
A process for preparing saturated carboxylic acids having from 1 to 4 carbon atoms at a reaction temperature of from 100° C. to 400° C. and pressures of from 1.2x105 Pa to 51x105 Pa by gas phase oxidation of saturated and/or unsaturated C4-hydrocarbons, with an oxygen-containing gas and water vapor in the presence of at least one catalyst. The gas leaving the reactor is partly recirculated in a reaction gas circuit. This reaction gas circuit is configured such that part of the organic acids formed in the gas-phase oxidation is taken from the gas leaving the reactor so that the acid content of the recirculated part of the gas leaving the reactor is from 0.01% to 6.0% by volume.
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申请公布号 |
US6429331(B1) |
申请公布日期 |
2002.08.06 |
申请号 |
US19990313400 |
申请日期 |
1999.05.18 |
申请人 |
CONSORTIUM FUER ELEKTROCHEMISCHE INDUSTRIE GMBH |
发明人 |
RUEDINGER CHRISTOPH;EBERLE HANS-JUERGEN;BOGNER RAGNAR;KOHLMANN WOLFGANG |
分类号 |
B01J23/22;B01J23/28;C07B61/00;C07C27/12;C07C51/215;C07C51/25;C07C53/02;C07C53/08;(IPC1-7):C07C51/21 |
主分类号 |
B01J23/22 |
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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