发明名称 |
PROCESS FOR THE CONTINUOUS PREPARATION OF AN ANHYDROUS MIXTURE OF METHYL ACETATE AND METHANOL |
摘要 |
<p>The anhydrous methyl acetate/methanol mixture is prepared by esterification of acetic acid with methanol in the presence of an acid esterification catalyst, in which the esterification is carried out in a distillation column in which n 20 to 50 distillation trays and in which… a) the acetic acid is fed in together with a catalyst to a distillation tray which is at a distance of 0.5 n to 0.8 n, relative to the still pot,… b) 50 to 80% by weight of the entire methanol is fed into the still pot and the remaining methanol to a distillation tray which is 2 to 10 trays above the tray at which acetic acid is fed in,… c) methanol and acetic acid are fed into the distillation column at a molar ratio of (1.5 to 3) : 1,… d) the reflux ratio is set to (0.75 to 1.5) : 1,… e) the anhydrous methyl acetate/methanol mixture is removed at the top of the column and… f) a bottom product comprising water/methanol/acetic acid is discharged together with the catalyst from the still pot.</p> |
申请公布号 |
EP0387674(B1) |
申请公布日期 |
1993.06.09 |
申请号 |
EP19900104314 |
申请日期 |
1990.03.07 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
ERPENBACH, HEINZ, DR.;GUENTHER, KLAUS, DR.;KOHL, GEORG |
分类号 |
B01J27/02;B01D3/14;B01J27/16;C07B61/00;C07C;C07C27/00;C07C67/03;C07C67/08;C07C67/54;C07C69/12;C07C69/14 |
主分类号 |
B01J27/02 |
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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