![制备二甲苯的方法](/CN/2015/8/6/images/201580031558.jpg)
基本信息:
- 专利标题: 制备二甲苯的方法
- 专利标题(英):Process for the production of para-xyxlene
- 申请号:CN201580031558.9 申请日:2015-06-10
- 公开(公告)号:CN106458788A 公开(公告)日:2017-02-22
- 发明人: R·G·廷格 , J·L·安德鲁斯 , M·莫立尼尔
- 申请人: 埃克森美孚化学专利公司
- 申请人地址: 美国得克萨斯
- 专利权人: 埃克森美孚化学专利公司
- 当前专利权人: 埃克森美孚化学专利公司
- 当前专利权人地址: 美国得克萨斯
- 代理机构: 中国国际贸易促进委员会专利商标事务所
- 代理人: 夏正东
- 优先权: 62/018,724 2014.06.30 EP 62/018,726 2014.06.30 US
- 国际申请: PCT/US2015/035062 2015.06.10
- 国际公布: WO2016/003611 EN 2016.01.07
- 进入国家日期: 2016-12-13
- 主分类号: C07C2/66
- IPC分类号: C07C2/66 ; C07C7/00 ; C07C6/12 ; C07C5/27 ; C07C7/13 ; C07C4/12 ; C07C4/24 ; C07C6/06 ; C07C7/14 ; C07C2/86 ; C07C7/04 ; C07C1/24 ; C07C15/08 ; B01J19/24
In a process for producing para-xylem, a feed stream comprising C6+ aromatic hydrocarbons is separated into a C7- aromatic hydrocarbon-containing stream, a C8 aromatic hydrocarbon-containing stream, and a C9+ aromatic hydrocarbon-containing stream. The C7- aromatic hydrocarbon-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Ethylbenzene is removed from the C8 aromatic hydrocarbon-containing stream, para-xylene is recovered from the ethylbenzene-depleted C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream. The C9+-containing stream with a transalkylation catalyst under conditions effective to convert C9+-aromatics to C8--aromatics and produce a transalkylated stream, which is recycled together with the isomerized stream to the para- xylene recovery section.
公开/授权文献:
- CN106458788B 制备二甲苯的方法 公开/授权日:2019-11-26