发明名称 |
Process for producing methyl tertiary butyl ether |
摘要 |
A process for producing methyl tertiary butyl ether is disclosed, comprising reacting isobutylene and methanol using a hydrocarbon mixture of 4 carbon atoms containing isobutylene and methanol as starting materials in a reaction zone containing an acidic ion exchange resin and distilling the resulting reaction mixture in a distillation column connected to the reaction zone to separate methyl tertiary butyl ether from the unreacted hydrocarbon mixture of 4 carbon atoms, wherein a mixture of the hydrocarbon mixture of 4 carbon atoms as a distillate from a top of the distillation column and methanol as a distillate by azeotropy is contacted with water in a second extraction step to wash and extract methanol with water, and the water containing the extracted methanol is then contacted with said hdyrocarbon mixture of 4 carbon atoms containing isobutylene which is fed to the reaction zone in a first extraction step in an upstream of the reaction zone to thereby transfer a part or a large portion of the methanol in the methanol-containing water into a hydrocarbon mixture phase by reverse extraction. By the process, methanol in the reaction mixture can be recovered simply and at low cost. |
申请公布号 |
US4665237(A) |
申请公布日期 |
1987.05.12 |
申请号 |
US19860871215 |
申请日期 |
1986.06.05 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
ARAKAWA, SHINICHI;ARAKI, MASASHI;OKAMURA, MASAAKI |
分类号 |
C07C43/04;B01J31/08;C07B61/00;C07C29/86;C07C41/00;C07C41/06;C07C41/38;C07C41/42;C07C67/00;(IPC1-7):C07C41/06 |
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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