发明名称 |
Recovery of C4 olefins from a product stream comprising C4 olefins, dimethyl ether and C5+ hydrocarbons |
摘要 |
Disclosed is a process for removing DME from a stream containing C4 olefins. The process includes providing a first stream comprising C4 olefins, C5+ hydrocarbons, DME, and methanol. The first stream is separated into a second stream comprising the C4 olefins and the DME and a third stream comprising the C5+ hydrocarbons and the methanol. The second stream is directed to a DME absorption unit, wherein the second stream contacts water under conditions effective to separate the C4 olefins from the DME. Also disclosed is a process including contacting the first stream with water in a methanol removal unit under conditions effective to separate remove the methanol therefrom; distilling the methanol-depleted stream to remove C5+ hydrocarbon components, and contacting the stream with water in a DME removal unit under conditions effective to form an overhead stream comprising the C4 olefins and a bottoms stream comprising the DME.
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申请公布号 |
US7060865(B2) |
申请公布日期 |
2006.06.13 |
申请号 |
US20020292232 |
申请日期 |
2002.11.12 |
申请人 |
EXXONMOBIL CHEMICAL PATENTS INC. |
发明人 |
DING ZHONG YI;LATTNER JAMES RICHARDSON |
分类号 |
C07C7/04;C07C7/11;C07C41/38;C07C41/42 |
主分类号 |
C07C7/04 |
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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