Pelletized immobilized amine sorbent for CO2 capture

Patent metadata

Field	Value
Publication number	US-10065174-B1
Application number	US-201615156773-A
Country	US
Kind code	B1
Filing date	May 17, 2016
Priority date	Sep 28, 2015
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

The disclosure describes a pelletized sorbent comprising a first component comprising Basic Immobilized Amine Sorbent, a second component comprising inorganic strength additive, and a third component comprising polymer binder, where the Basic Immobilized Amine Sorbent and solid inorganic strength additive are interconnected by the polymer binder. The pelletized sorbent is useful for removing CO2 from a gaseous mixture such as a post combustion gas stream.

First claim

We claim:

1. A pelletized sorbent for separation of CO 2 from a gaseous mixture, said pelletized sorbent comprising:
a first component comprising a Basic Immobilized Amine Sorbent;
a second component comprising fly ash; and
a third component comprising a polymer binder,
wherein the Basic Immobilized Amine Sorbent and fly ash are interconnected by the polymer binder.

2. The pelletized sorbent of claim 1 wherein the Basic Immobilized Amine Sorbent is present in the range from about 63% to about 92% of the total dry pelletized sorbent weight.

3. The pelletized sorbent of claim 1 wherein the polymer binder is selected from the group consisting of poly(vinyl chloride), poly(chloroprene), poly(vinyl alcohol), poly(vinyl acetate), and polystyrene.

4. The pelletized sorbent of claim 3 wherein the polymer binder is poly(vinyl chloride) or poly(chloroprene).

5. The pelletized sorbent of claim 1 wherein the pelletized sorbent is hydrophobic.

6. The pelletized sorbent of claim 1 further comprising:
a fourth component comprising a cross-linker having at least two functional groups, wherein the at least two functional groups are bound to the polymer binder.

7. The pelletized sorbent of claim 6 wherein the at least two functional groups are selected from the group consisting of aldehyde, amine, carboxylic acid, epoxy, aminosilane, alkoxysilane, cyanate, isocyanate, acrylate, cyanoacrylate, and combinations thereof.

8. The pelletized sorbent of claim 7 wherein the cross-linker is a polyamine.

9. The pelletized sorbent of claim 1 further comprising:
a crush strength equal to or greater than about 0.3 MPa.

10. The pelletized sorbent of claim 9 wherein the crush strength is equal to or greater than about 1.3 MPa.

11. The pelletized sorbent of claim 1 further comprising:
a CO 2 sorbent capacity equal to or greater than about 1.0 mmol/g.

12. The pelletized sorbent of claim 11 wherein the CO 2 sorbent capacity is equal to or greater than about 2.0 mmol/g.

13. The pelletized sorbent of claim 1 further comprising: a percentage of CO 2 capture retained (PCR) value equal to or greater than about 20%.

14. The pelletized sorbent of claim 13 wherein the PCR value is equal to or greater than about 50%.

15. The pelletized sorbent of claim 1 further comprising:
a CO 2 sorbent capacity equal to or greater than about 1.7 mmol/g; and
a percentage of CO 2 capture retained (PCR) value greater than 20%.

16. The pelletized sorbent of claim 1 further comprising:
a CO 2 sorbent capacity greater than 2.0 mmol/g; and
a percentage of CO 2 capture retained (PCR) value greater than 50%.

17. A pelletized sorbent for separation of CO 2 from a gas mixture, said pelletized sorbent comprising:
a first component comprising Basic Immobilized Amine Sorbent (BIAS),
wherein the Basic Immobilized Amine Sorbent is a Class 1, Class 2, or hybrid Class 1/Class 2 BIAS, and
wherein the Basic Immobilized Amine Sorbent is present in the range from about 68% to about 85% of the total dry pelletized sorbent weight;
a second component comprising inorganic strength additive, wherein the inorganic strength additive is fly ash,
wherein the inorganic strength additive is present in the range from about 5% to about 37% of the total dry pelletized sorbent weight; and
a third component comprising a polymer binder,
wherein the Basic Immobilized Amine Sorbent and the inorganic strength additive are interconnected by the polymer binder; and wherein the pelletized sorbent exhibits
a CO 2 sorbent capacity greater than 1.7 mmol/g;
a crush strength equal to or greater than 1.0 MPa or attrition value less than 1% after 24 hrs; and

a (PCR) value greater than 50%.

18. The pelletized sorbent of claim 17 wherein the polymer binder is hydrophobic.

19. The pelletized sorbent of claim 18 further comprising:
a fourth component comprising a cross-linker having at least two functional groups.

20. The pelletized sorbent of claim 19 where the cross-linker is a polyamine.

21. A pelletized sorbent for separation of CO 2 from a gaseous mixture, said pelletized sorbent comprising:
a first component comprising a Basic Immobilized Amine Sorbent;
a second component comprising an inorganic strength additive; and
a third component comprising a polymer binder comprising poly(vinyl chloride) or poly(chloroprene),
wherein the Basic Immobilized Amine Sorbent and inorganic strength additive are interconnected by the polymer binder.

22. A pelletized sorbent for separation of CO 2 from a gaseous mixture, said pelletized sorbent comprising:
a first component comprising a Basic Immobilized Amine Sorbent;
a second component comprising an inorganic strength additive; and
a third component comprising a polymer binder; and
a fourth component comprising a cross-linker having at least two functional groups, wherein the at least two functional groups are bound to the polymer binder, and
wherein the Basic Immobilized Amine Sorbent and solid inorganic strength additive are interconnected by the polymer binder.

Assignees

• The United States Dept Of Energy
• Us Dept Energy

Inventors

• Wifong Walter C
• Gray Mcmahan L
• Soong Yee
• Kail Brian W

Classifications

• B01J20/32

  Impregnating or coating {; Solid sorbent compositions obtained from processes involving impregnating or coating} · CPC title

• B01J20/3204

  Inorganic carriers, supports or substrates · CPC title

• B01J20/267 Primary

  Cross-linked polymers · CPC title

• B01J20/28016

  Particle form · CPC title

• B01J20/28011

  Other properties, e.g. density, crush strength · CPC title