Integration of a dehydrogenation unit and an alkylation unit

Patent metadata

Field	Value
Publication number	US-10294173-B2
Application number	US-201815994996-A
Country	US
Kind code	B2
Filing date	May 31, 2018
Priority date	Jun 30, 2017
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

The present invention relates to the integration of an alkylation unit for use in a hydrocarbon conversion process. More specifically, the present invention relates to the integration of a dehydrogenation unit and an alkylation unit and the placement of different isomerization units located off the deisobutanizer and the debutanizer.

First claim

The invention claimed is:

1. A process for dehydrogenation and alkylation, comprising:
passing a field butane stream comprising about 38% isobutane and about 58% n-butane directly to a dehydrogenation unit to generate a process stream comprising isobutane, isobutene, n-butane and n-butenes;
passing the process stream to a selective hydrogenation unit to generate a selective hydrogenation unit product stream comprising isobutane, isobutene, n-butane and n-butenes;
passing the selective hydrogenation unit product stream to a dehydrogenation fractionation unit to generate a light stream, a heavies stream, and a dehydrogenation fractionation product stream;
passing the dehydrogenation fractionation product stream to an alkylation unit to produce an alkylation unit product stream comprising alkylate;
passing the alkylation unit product stream to a deisobutanizer to generate a deisobutanizer overhead stream and a deisobutanizer bottoms stream;
passing the deisobutanizer bottoms stream to a debutanizer to generate a debutanizer overhead stream and a debutanizer alkylate products stream;
passing a deisobutanizer side cut to a first isomerization unit to generate a first isomerization unit product stream with an increase of isobutane which is passed to the deisobutanizer;
passing a portion of the debutanizer overhead stream to a second isomerization unit to generate a second isomerization unit product stream with an increase of isobutane which is passed to the deisobutanizer; and
passing a portion of the debutanizer overhead stream to the dehydrogenation unit.

2. The process of claim 1 , wherein the alkylation unit is a sulfuric acid alkylation unit.

3. The process of claim 1 , wherein the alkylation unit is an HF alkylation unit.

4. The process of claim 1 , wherein the alkylation unit is an ionic liquid alkylation unit.

5. The process of claim 1 , further comprising at least one of:
sensing at least one parameter of the process and generating a signal or data from the sensing;
generating and transmitting a signal; or
generating and transmitting data.

Assignees

• Uop Llc

Inventors

• Luebke Charles P
• Zavala Raul
• Digiulio Christopher D

Classifications

• C07C9/16

  Branched-chain hydrocarbons · CPC title

• C07C5/52

  with a hydrocarbon as an acceptor, e.g. hydrocarbon disproportionation, i.e. 2CnHp -> CnHp+q + CnHp-q · CPC title

• C07C2527/1206

  Hydrogen fluoride · CPC title

• C07C5/05

  Partial hydrogenation · CPC title

• C07C5/2729 Primary

  Changing the branching point of an open chain or the point of substitution on a ring · CPC title