发明名称 |
FREMGANGSMAATE TIL SAMTIDIG FREMSTILLING AV REN METYLTERT.BUTYLETER OG VIDTGAAENDE ISOBUTENFRI C4-HYDROKARBONBLANDING |
摘要 |
A process for the simultaneous manufacture of pure methyl tertiary butyl ether (MTBE) and a substantially isotubene-free mixture of C4-hydrocarbons, by reacting the isobutene contained in the mixture of C4-hydrocarbons with excess methanol in the liquid phase at elevated temperatures on strongly acid, macroporous, organic ion exchange resins. The process has the following steps: (a) methanol and isobutene are reacted in a molar ratio of 2:1 to 5:1 at temperatures between 30 DEG and 100 DEG C.; (b) the unconverted hydrocarbons are then removed as the top product under a pressure of 2 to 10 bars from a first rectification column; (c) the bottom product from this first column is rectified in a second column under normal pressure or under a slight excess pressure of up to 2 bars at the top of the column, the bottom product of this rectification is recycled to reaction zone (a), if necessary, after separating off a portion of the tertiary butanol formed and the C8-olefins; and (d) the distillate from this second column is rectified in a third rectification column under a pressure of 5 to 30 bars, the distillate thus obtained is recycled into the feed to the second column and pure methyl tertiary butyl ether is withdrawn from the bottom of the third column. |
申请公布号 |
NO793925(A) |
申请公布日期 |
1980.06.16 |
申请号 |
NO19790003925 |
申请日期 |
1979.12.03 |
申请人 |
CHEMISCHE WERKE HUELS AG, |
发明人 |
DROSTE, WILHELM,;OBENAUS, FRITZ, |
分类号 |
C07C43/04;B01J31/00;C07B61/00;C07C1/00;C07C7/148;C07C11/08;C07C41/00;C07C41/06;C07C67/00;(IPC1-7):C07C/ |
主分类号 |
C07C43/04 |
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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