Integration of an organic chloride decomposition reactor on the isomerization/deisobutanizer C5 drag stream

Patent metadata

Field	Value
Publication number	US-10815166-B2
Application number	US-201916368461-A
Country	US
Kind code	B2
Filing date	Mar 28, 2019
Priority date	Jun 28, 2018
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

A process for producing an isomerized product comprises sending a feed stream comprising butanes, hydrogen and an organic chloride to a butane isomerization reactor containing an isomerization catalyst to convert a portion of normal butanes in said feed stream to iso-butanes in an isomerized stream. The isomerized stream to a stabilizer column to produce a butane stream containing normal, iso-butanes and C5 hydrocarbons; the butane stream is sent to a column to produce an isomerized upper stream and a bottoms stream comprising a mixture of butanes, C5 hydrocarbons and organic chloride. The bottoms stream is sent to an organic chloride decomposition reactor to produce a mixture of HCl, hydrogen and hydrocarbons.

First claim

The invention claimed is:

1. A process for producing i-butane comprising:
sending a feed stream comprising butanes, hydrogen and an organic chloride to a butane isomerization reactor containing an isomerization catalyst to convert a portion of normal butanes in said feed stream to iso-butanes in an isomerized stream;
sending said isomerized stream to a stabilizer column to produce a butane stream containing normal, iso-butanes and C5 hydrocarbons; and
sending said butane stream to a deisobutanizer column to produce an isomerized upper stream comprising iso-butanes, an NC4 rich side draw stream, and a bottoms stream comprising a mixture of butanes, C5 hydrocarbons and said organic chloride; and
sending said bottoms stream to an organic chloride decomposition reactor to produce an organic chloride decomposition stream comprising hydrogen and HCl.

2. The process of claim 1 wherein said organic chloride is perchloroethylene.

3. The process of claim 2 wherein said organic chloride decomposition stream further comprises ethylene, ethylene chloride and ethane.

4. The process of claim 1 further comprising sending said organic chloride decomposition stream through a chloride guard bed to remove HCl.

5. The process of claim 1 further comprising sending said organic chloride decomposition stream through a flash drum to recycle hydrogen and HCl.

6. The process of claim 1 wherein said mixture of butanes, C5 hydrocarbons and organic chloride comprises 20-100 wppm perchloroethylene.

7. The process of claim 1 wherein hydrogen is added to said bottoms stream before said bottoms stream enters said organic chloride decomposition reactor.

8. The process of claim 1 wherein said organic chloride decomposition reactor contains a Pd or a Pt containing catalyst.

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

Assignees

• Uop Llc

Inventors

• Krupa Steven L
• Shecterle David J

Classifications

• C07C5/2206

  Catalytic processes not covered by C07C5/23 - C07C5/31 · CPC title

• C07C2523/44

  Palladium · CPC title

• C07C2523/42

  Platinum · CPC title

• B01J23/42 Primary

  Platinum · CPC title

• C07C2521/12

  Silica and alumina · CPC title