发明名称 |
Process for the preparation of an olefin |
摘要 |
An olefin is prepared from an alkyl alcohol in a process which comprises the steps: a) converting the alkyl alcohol into a dialkylether over a first catalyst, to yield a hot dialkylether product stream containing alkyl alcohol, dialkylether and water; b) cooling the hot dialkylether product stream at least partly by indirect heat exchange with a cold dialkylether product stream to below the dew point of water at the prevailing conditions to obtain a gas-liquid mixture; c) separating the obtained mixture into a liquid water-containing stream and a vaporous dialkylether-rich stream; d) subjecting at least part of the vaporous dialkylether-rich stream, as the cold dialkylether product stream in step b), to heat exchange with the hot dialkylether product stream, to yield a heated dialkylether-rich feed; and e) converting the heated dialkylether-rich feed to an olefin over a second catalyst. |
申请公布号 |
US8884090(B2) |
申请公布日期 |
2014.11.11 |
申请号 |
US200812743276 |
申请日期 |
2008.11.19 |
申请人 |
shell Oil Company |
发明人 |
Van Westrenen Jeroen;Chewter Leslie Andrew;Winter Ferry |
分类号 |
C07C1/20;C07C1/24;C07C1/00;B01J8/04;B01J8/26;C07C11/02 |
主分类号 |
C07C1/20 |
代理机构 |
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代理人 |
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主权项 |
1. A process for the preparation of an olefin from an alkyl alcohol which process comprises:
a) converting the alkyl alcohol into a dialkylether over a first catalyst, to yield a hot dialkylether product stream containing alkyl alcohol, dialkylether and water; b) cooling the hot dialkylether product stream at least partly by indirect heat exchange with a cold dialkylether product stream to below the dew point of water at the prevailing conditions to obtain a gas-liquid mixture; c) separating the obtained gas-liquid mixture into a liquid water-containing stream and a vaporous dialkylether-rich stream; d) subjecting at least part of the vaporous dialkylether-rich stream, as the cold dialkylether product stream in step b), to indirect heat exchange with the hot dialkylether product stream, to yield a heated dialkylether-rich feed; and e) converting the heated dialkylether-rich feed to an olefin over a second catalyst. |
地址 |
Houston TX US |