Claims
- 1. A process for purifying a mixture of liquid carbonylation products formed in the carbonylation of methanol, methylacetate and/or dimethyl ether in the presence of iodides by removing methyl iodide from said products, which process comprises: passing a non-aromatic hydrocarbon of 4-14 carbon atoms in countercurrent direction through the liquid carbonylation mixture to extract methyl iodide from the mixture of carbonylation products in from 1 to 10 extraction stages and thus substantially lowering the amount of methyl iodide in such products.
- 2. The process of claim 1, wherein the extraction is carried out in the presence of from about 20 to 200% by weight of water based on the product to be extracted.
- 3. The process of claim 1, wherein the non-aromatic hydrocarbon is isopentane, 2,2,4-trimethylpentane, n-octane, n-nonane, n-decane, cyclopentane, cyclohexane or decahydronaphthalene.
- 4. The process of claim 1, wherein the non-aromatic hydrocarbon is a straight-chained or branched-chained C.sub.4 -C.sub.14 -alkane or a mono-, bi- or tricyclic cycloalkane having 5 or 6 carbon atoms per ring or mixtures of said non-aromatic hydrocarbons.
- 5. The process of claim 4, wherein the extraction is carried out in the presence of from about 20 to 200% by weight of water based on the product to be extracted.
Parent Case Info
This application is a continuation of application Ser. No. 348,199, filed on Feb. 12, 1982, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2940751 |
Apr 1980 |
DEX |
3045105 |
Jul 1982 |
DEX |
Non-Patent Literature Citations (2)
Entry |
Mellan, Ibert, Industrial Solvents, Second Edition, Book Division, Reinhold Publishing Corp., N.Y., 1950, p. 4. |
W. West et al, Journal Amer. Chem. Soc., 62, 3021-6, 1940 (CA. 35:3868). |
Continuations (1)
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Number |
Date |
Country |
Parent |
348199 |
Feb 1982 |
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