发明名称 |
PROCESS FOR PREPARING ALKYL ETHERS AND MIXTURES THEREOF |
摘要 |
The invention concerns a process for preparing a tertiary alkyl ether product. The process comprises reacting the isoolefins of an olefinic hydrocarbon feedstock in a reaction zone (1 - 3) with an alkanol to form a reaction mixture, which is subjected to distillation in a first distillation zone (4). The bottoms product of the first distillation contains the ether(s), whereas the overhead stream contains unreacted alkanol and a mixture of light hydrocarbons. The overhead stream is subjected to a second distillation in a second distillation zone (15). The overhead product of the second distillation mainly contains the lightest hydrocarbons and a small amount of alkanol, and the bottoms product contains an essentially oxygenate-free hydrocarbon stream which can be used as such for alkylation. In order to increase the conversion of the process, a side drawoff is withdrawn from the second distillation zone (15) and recirculated to the reaction zone (1 - 3). |
申请公布号 |
CA2197947(A1) |
申请公布日期 |
1997.08.22 |
申请号 |
CA19972197947 |
申请日期 |
1997.02.19 |
申请人 |
NESTE OY |
发明人 |
J RVELIN, HARRI;LINDQVIST, PETRI;AITTAMAA, JUHANI;KOSKINEN, MATTI |
分类号 |
C07C41/06;C07C41/42;C07C43/04;(IPC1-7):C07C43/04 |
主分类号 |
C07C41/06 |
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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