发明名称 |
Process for preparing ethers |
摘要 |
In the process for preparing methyl tert.-alkyl ether comprising the steps of (a) contacting and reacting in the liquid phase a reaction mixture formed by combining a stream consisting essentially of C4-C5 hydrocarbons and containing at least some proportion of isoalkylene and a stoichiometric excess of methanol, with respect to the isoalkylene, to form a reaction product comprising methyl tert.-alkyl ether, unreacted methanol and unreacted C4-C5 hydrocarbons; (b) isolating the methyl tert.-alkyl ether from the reaction product; and (c) recovering the unreacted methanol from the residual portion of the reaction product; the improvement which comprises selectively adsorbing the methanol constituent of said residual reaction product in a bed of crystalline molecular sieve adsorbent and recovering same by desorption using as a purge-desorption stream, the C4-C5 hydrocarbon stream used to prepare the initial reaction mixture. |
申请公布号 |
US4740631(A) |
申请公布日期 |
1988.04.26 |
申请号 |
US19840679213 |
申请日期 |
1984.12.07 |
申请人 |
UNION CARBIDE CORPORATION |
发明人 |
NAGJI, MOEZ M.;GARG, DESH R.;MILLER, WILLIAM C. |
分类号 |
C07C29/76;C07C41/06;C07C41/36;(IPC1-7):C07C41/06;C07C41/34 |
主分类号 |
C07C29/76 |
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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