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Title: Isomerization of C[sub 4] alkenes

Abstract

A method is described for isomerizing isobutene or n-butene to produce a mixture of isobutene and normal butene, and polymerizing at least a portion thereof to produce isobutene/n-butene co-dimer, which comprises feeding at least 80 weight % of either the isobutene or n-butene to a catalytic distillation reactor containing a fixed bed acidic cation exchange resin catalyst packing which provides both the catalyst sites and distillation sites for the reaction products, isomerizing a portion of the isobutene or n-butene to produce a mixture of isobutene and n-butene and reacting at least a portion of the isobutene and n-butene to form co-dimer of isobutene and n-butene, whereby an overhead fraction containing any unreacted isobutene and n-butene and a bottoms fraction containing co-dimer is produced. The result of the reaction is substantially the same regardless whether the feed is isobutene or n-butene. Other aspects of the invention, include combinations of procedures to produce high purity isobutene and n-butene. Either isobutene or n-butene product (depending on the desired product) can be recycled as feed, thus substantially carrying out the isomerization to extinction and total conversion to the desired product. 1 fig.

Inventors:
Issue Date:
OSTI Identifier:
7259909
Patent Number(s):
4482775 A
Application Number:
PPN: US 6-421588
Assignee:
Chemical Research Licensing Co., Houston, TX (United States) PTO; EDB-94-121437
DOE Contract Number:  
FC07-80CS40454
Resource Type:
Patent
Resource Relation:
Patent File Date: 22 Sep 1982
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 2-METHYLPROPANE; ISOMERIZATION; POLYMERIZATION; BUTENES; CATALYSTS; DISTILLATION EQUIPMENT; ION EXCHANGE MATERIALS; ALKANES; ALKENES; CHEMICAL REACTIONS; EQUIPMENT; HYDROCARBONS; MATERIALS; ORGANIC COMPOUNDS; 020500* - Petroleum- Products & By-Products

Citation Formats

Smith, L.A. Jr. Isomerization of C[sub 4] alkenes. United States: N. p., 1984. Web.
Smith, L.A. Jr. Isomerization of C[sub 4] alkenes. United States.
Smith, L.A. Jr. Tue . "Isomerization of C[sub 4] alkenes". United States.
@article{osti_7259909,
title = {Isomerization of C[sub 4] alkenes},
author = {Smith, L.A. Jr.},
abstractNote = {A method is described for isomerizing isobutene or n-butene to produce a mixture of isobutene and normal butene, and polymerizing at least a portion thereof to produce isobutene/n-butene co-dimer, which comprises feeding at least 80 weight % of either the isobutene or n-butene to a catalytic distillation reactor containing a fixed bed acidic cation exchange resin catalyst packing which provides both the catalyst sites and distillation sites for the reaction products, isomerizing a portion of the isobutene or n-butene to produce a mixture of isobutene and n-butene and reacting at least a portion of the isobutene and n-butene to form co-dimer of isobutene and n-butene, whereby an overhead fraction containing any unreacted isobutene and n-butene and a bottoms fraction containing co-dimer is produced. The result of the reaction is substantially the same regardless whether the feed is isobutene or n-butene. Other aspects of the invention, include combinations of procedures to produce high purity isobutene and n-butene. Either isobutene or n-butene product (depending on the desired product) can be recycled as feed, thus substantially carrying out the isomerization to extinction and total conversion to the desired product. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {11}
}