Butadiene sequestration via sulfur dioxide charged zeolite beds

Patent metadata

Field	Value
Publication number	US-9895656-B2
Application number	US-201514832131-A
Country	US
Kind code	B2
Filing date	Aug 21, 2015
Priority date	Jun 24, 2015
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

In an example, a method of butadiene sequestration includes receiving an input stream that includes butadiene. The method includes directing the input stream to a first sulfur dioxide charged zeolite bed for butadiene sequestration via a first chemical reaction of butadiene and sulfur dioxide to form sulfolene.

First claim

The invention claimed is:

1. A method of butadiene sequestration, the method comprising:
receiving an input stream that comprises butadiene;
directing the input stream to a first sulfur dioxide charged zeolite bed for butadiene sequestration via a first chemical reaction of butadiene and sulfur dioxide to form sulfolene;
monitoring butadiene in an output stream of the first sulfur dioxide charged zeolite bed; and
in response to determining that butadiene detected in the output stream exceeds a butadiene threshold, directing the input stream to a second sulfur dioxide charged zeolite bed for butadiene sequestration.

2. The method of claim 1 , wherein the first chemical reaction comprises the butadiene undergoing a cheletropic, [4+1] cycloaddition with the sulfur dioxide to form the sulfolene.

3. The method of claim 1 , wherein the first sulfur dioxide charged zeolite bed comprises a plurality of sulfur dioxide molecules at a plurality of zeolite bed pore locations.

4. The method of claim 1 , wherein a first valve is configured to provide a first fluid path to the first sulfur dioxide charged zeolite bed in a first operating position and to provide a second fluid path to the second sulfur dioxide charged zeolite bed in a second operating position.

5. The method of claim 4 , wherein the first valve is configured to direct the input stream to the second sulfur dioxide charged zeolite bed via the second fluid path in response to receiving a first valve positioning signal from a control device.

6. The method of claim 1 , further comprising performing a first set of operations in response to determining that the butadiene detected in the output stream exceeds the butadiene threshold.

7. The method of claim 6 , wherein the first set of operations comprises a second chemical reaction to form butadiene and sulfur dioxide from the sulfolene that is formed via the first chemical reaction.

8. The method of claim 6 , wherein the first set of operations comprises utilizing one or more solvents to remove the sulfolene from the first sulfur dioxide charged zeolite bed.

9. The method of claim 6 , further comprising performing a second set of operations in response to determining that butadiene detected in the output stream exceeds the butadiene threshold.

10. The method of claim 9 , wherein:
the first set of operations comprises a second chemical reaction to form butadiene and sulfur dioxide from the sulfolene that is formed via the first chemical reaction; and
the second set of operations comprises providing the sulfur dioxide that is formed in the second chemical reaction as the additional sulfur dioxide.

11. The method of claim 9 , further comprising, after providing the additional sulfur dioxide, directing the input stream to the first sulfur dioxide charged zeolite bed for butadiene sequestration.

Assignees

• IBM

Inventors

• Boday Dylan J
• Kuczynski Joseph
• Mauldin Timothy C

Classifications

• C07D333/48 Primary

  by oxygen atoms · CPC title

• C07C7/17

  with acids or sulfur oxides · CPC title

• B01J19/24

  Stationary reactors without moving elements inside (B01J19/08, B01J19/26 take precedence; with stationary particles B01J8/02) · CPC title

• B01D2257/7022

  Aliphatic hydrocarbons · CPC title

• B01J2219/24

  Stationary reactors without moving elements inside · CPC title