公开(公告)号：US20150141706A1

公开(公告)日：2015-05-21

申请号：US14548500

申请日：2014-11-20

Applicant: Lummus Technology Inc.

Inventor： Sukwon Choi ,  Bala Ramachandran

IPC: C07C6/04 ,  B01J8/04 ,  C07C5/27 ,  C07C5/05 ,  C07C41/05 ,  B01J8/00 ,  C07C5/25

CPC classification number: C07C6/04 ,  B01J8/001 ,  B01J8/04 ,  B01J2208/027 ,  C07C5/2512 ,  C07C5/277 ,  C07C7/04 ,  C07C41/05 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2521/08 ,  C07C2521/10 ,  C07C2523/02 ,  C07C2523/30 ,  C07C2529/06 ,  Y02P20/127 ,  C07C11/10 ,  C07C11/08 ,  C07C11/09 ,  C07C11/06

Abstract: A process for the production of C4 olefins, which may include: contacting a hydrocarbon mixture comprising alpha-pentenes with an isomerization catalyst to form an isomerization product comprising beta-pentenes; contacting ethylene and the beta-pentenes with a first metathesis catalyst to form a first metathesis product comprising butenes and propylene, as well as any unreacted ethylene and C5 olefins; and fractionating the first metathesis product to for an ethylene fraction, a propylene fraction, a butene fraction, and a C5 fraction.

Abstract translation: 一种用于生产C4烯烃的方法，其可以包括：将包含α-戊烯的烃混合物与异构化催化剂接触以形成包含β-戊烯的异构化产物; 使乙烯和β-戊烯与第一复分解催化剂接触以形成包含丁烯和丙烯的第一复分解产物，以及任何未反应的乙烯和C5烯烃; 并将第一复分解产物分馏成乙烯馏分，丙烯馏分，丁烯馏分和C5馏分。

公开(公告)号：US20140142359A1

公开(公告)日：2014-05-22

申请号：US14069737

申请日：2013-11-01

Applicant: Lummus Technology Inc.

Inventor： Bala Ramachandran ,  Sukwon Choi

IPC: C07C6/04

CPC classification number: C07C6/04 ,  B01J19/245 ,  C07C1/20 ,  C07C5/2767 ,  C07C7/14891 ,  C07C41/06 ,  Y02P20/127 ,  C07C11/10 ,  C07C11/06 ,  C07C43/046

Abstract: Mixed pentenes may be converted to propylene by feeding an alcohol, linear pentenes, and isopentenes to an etherification reactor. The alcohol and isopentenes may be reacted in the etherification reactor to convert isopentenes to tertiary amyl alkyl ether, which may be separated from the linear pentenes, recovered as a linear pentene fraction. The tertiary amyl alkyl ether may be fed to a decomposition reactor to convert at least a portion of the tertiary amyl alkyl ether to alcohol and isopentenes. The alcohol and isopentenes may then be separated to recover an isopentene fraction and an alcohol fraction. The isopentene fraction is then fed to a skeletal isomerization reactor to convert at least a portion of the isopentenes to linear pentenes, the effluent from which may be recycled to the etherification reactor. Ethylene and the linear pentene fraction may then be to a metathesis reactor to produce propylene.

Abstract translation: 混合的戊烯可以通过将醇，线性戊烯和异戊烯加入到醚化反应器中而转化成丙烯。 醇和异戊烯可以在醚化反应器中反应，以将异戊烯转化成叔戊基烷基醚，其可与线性戊烯分离，作为线性戊烯馏分回收。 叔戊基烷基醚可以进料到分解反应器中以将至少一部分叔戊基烷基醚转化为醇和异戊烯。 然后可以分离醇和异戊烯以回收异戊烯馏分和醇馏分。 然后将异戊烯级分进料到骨架异构化反应器中以将至少一部分异戊烯转化为线性戊烯，其中可将其流出物再循环至醚化反应器。 然后可以将乙烯和线性戊烯馏分转移到复分解反应器以产生丙烯。