发明授权
- 专利标题: Process for producing para-xylene
- 专利标题(中): 生产对二甲苯的方法
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申请号: US11894187申请日: 2007-08-20
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公开(公告)号: US07683233B2公开(公告)日: 2010-03-23
- 发明人: John Di-Yi Ou , Sebastian C. Reyes , Bal K. Kaul , Wenyih Frank Lai , Brenda A. Raich , Charanjit S. Paur
- 申请人: John Di-Yi Ou , Sebastian C. Reyes , Bal K. Kaul , Wenyih Frank Lai , Brenda A. Raich , Charanjit S. Paur
- 申请人地址: US TX Houston
- 专利权人: ExxonMobil Chemical Patents Inc.
- 当前专利权人: ExxonMobil Chemical Patents Inc.
- 当前专利权人地址: US TX Houston
- 主分类号: C07C7/13
- IPC分类号: C07C7/13
摘要:
In a process for producing a para-xylene enriched product from a gaseous mixture comprising at least para-xylene, meta-xylene and ortho-xylene, the gaseous mixture is contacted with an adsorbent capable of selectively adsorbing para-xylene and comprising a crystalline molecular sieve having an average crystal size between about 0.5 micron and about 20 microns. The contacting is conducted at a temperature and pressure such that at least part of the para-xylene in the mixture is adsorbed by the adsorbent to produce a para-xylene-depleted effluent stream. The para-xylene is then desorbed from said adsorbent and collected to form a para-xylene enriched stream. The adsorption and desorption steps are repeated for a plurality of cycles, such that the time between successive contacting steps is no more than 10 seconds.
公开/授权文献
- US20080071126A1 Process for producing para-xylene 公开/授权日:2008-03-20