发明名称 |
Process for producing para-xylene |
摘要 |
A process for producing a PX-rich product comprises (a) separating a feedstock containing C<SUB>8 </SUB>hydrocarbons to produce a C<SUB>8 </SUB>hydrocarbons rich stream; (b) separating at least a first portion of the C<SUB>8 </SUB>hydrocarbons rich stream to produce a first PX-rich stream and a first PX-depleted stream; (c) isomerizing at least a portion of the first PX-depleted stream to produce a first isomerized stream having a higher PX concentration than the first PX-depleted stream; (d) separating a second portion of the C<SUB>8 </SUB>hydrocarbons rich stream and/or at least a portion of the first isomerized stream to produce a second PX-rich stream and a second PX-depleted stream; (e) isomerizing at least a portion of the second PX-depleted stream to produce a second isomerized stream having a higher PX concentration than the second PX-depleted stream; (f) recovering at least a portion of at least one of the first and second PX-rich streams as PX-rich product; and (g) supplying at least a portion of at least one of the first isomerized stream, the second isomerized stream, the first PX-rich stream, and the second PX-rich stream to the separating (a).
|
申请公布号 |
US7439412(B2) |
申请公布日期 |
2008.10.21 |
申请号 |
US20070784981 |
申请日期 |
2007.04.10 |
申请人 |
EXXONMOBIL CHEMICAL PATENTS INC. |
发明人 |
OU JOHN DI-YI;HELMKE, JR. HAROLD W.;PORTER JOHN R. |
分类号 |
C07C5/27 |
主分类号 |
C07C5/27 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|