Pelletized immobilized amine sorbent for CO2 capture

• US 10,603,654 B1
• Filed: 08/07/2018
• Issued: 03/31/2020
• Est. Priority Date: 09/28/2015
• Status: Active Grant

• Current Assignee: US Department of Energy (Government of the United States of America)
• Original Assignee: US Department of Energy (Government of the United States of America)
• Inventors: Wilfong, Walter C., Gray, McMahan L., Soong, Yee, Kail, Brian W.
• Primary Examiner(s): Lee, Rip A
• Application Number:
  US16/056,639
• Time in Patent Office: 602 Days
• CPC Class Codes: B01D 2253/106 Silica or silicates
• CPC Class Codes: B01D 2253/202 Polymeric adsorbents
• CPC Class Codes: B01D 2253/25 Coated, impregnated or composite adsorbents
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2258/0283 Flue gases
• CPC Class Codes: B01D 53/02 by adsorption, e.g. preparative gas chromatography solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01
• CPC Class Codes: B01D 53/62 Carbon oxides
• CPC Class Codes: B01D 53/82 with stationary reactants
• CPC Class Codes: B01J 20/043 Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
• CPC Class Codes: B01J 20/103 comprising silica
• CPC Class Codes: B01J 20/16 Alumino-silicates B01J20/12 takes precedence
• CPC Class Codes: B01J 20/22 comprising organic material
• CPC Class Codes: B01J 20/261 obtained by reactions only involving carbon to carbon unsaturated bonds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds per se C08F
• CPC Class Codes: B01J 20/262 obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds per se C08G
• CPC Class Codes: B01J 20/267 Cross-linked polymers
• CPC Class Codes: B01J 20/28011 Other properties, e.g. density, crush strength
• CPC Class Codes: B01J 20/28016 Particle form
• CPC Class Codes: B01J 20/2803 Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
• CPC Class Codes: B01J 20/3028 Granulating, agglomerating or aggregating
• CPC Class Codes: B01J 20/3042 Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent
• CPC Class Codes: Y02C 20/40 : of CO2

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.

Claims

1. A pelletized sorbent for separation of CO₂ 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 wherein the polymer binder is poly(vinyl chloride), poly(chloroprene), or poly(chloroprene) latex, and wherein the Basic Immobilized Amine Sorbent and inorganic strength additive are interconnected by the polymer binder.

2. A pelletized sorbent for separation of CO₂ from a gaseous mixture, said pelletized sorbent comprising:

a first component comprising a Basic Immobilized Amine Sorbent wherein the Basic Immobilized Amine Sorbent comprises an epoxy-based crosslinker;

a second component comprising an inorganic strength additive; and

a third component comprising a polymer binder,

wherein the Basic Immobilized Amine Sorbent and inorganic strength additive are interconnected by the polymer binder.

3. A pelletized sorbent for separation of CO₂ from a gaseous mixture, said pelletized sorbent comprising:

a first component comprising a Basic Immobilized Amine Sorbent wherein the Basic Immobilized Amine Sorbent comprises an antioxidant;

a second component comprising an inorganic strength additive; and

a third component comprising a polymer binder,

wherein the Basic Immobilized Amine Sorbent and inorganic strength additive are interconnected by the polymer binder.

4. The pelletized sorbent of claim 3 wherein the antioxidant is an inorganic antioxidant.

5. A pelletized sorbent for separation of CO₂ from a gas mixture, said pelletized sorbent comprising:

a first component comprising a 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 an 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;

a third component comprising a polymer binder wherein the polymer binder is poly(chloroprene) latex and wherein the Basic Immobilized Amine Sorbent and the inorganic strength additive are interconnected by the polymer binder and;

a CO₂ 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%.

6. A pelletized sorbent for separation of CO₂ from a gas mixture, said pelletized sorbent comprising:

a first component comprising a Basic Immobilized Amine Sorbent,

wherein the Basic Immobilized Amine Sorbent is a Class 1, Class 2, or hybrid Class 1/Class 2 BIAS,

wherein the BIAS comprises an antioxidant, 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;

a third component comprising a polymer binder,

wherein the Basic Immobilized Amine Sorbent and the inorganic strength additive are interconnected by the polymer binder;

a fourth component comprising an epoxy-based crosslinker,

a CO₂ 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%.

7. A pelletized sorbent for separation of CO₂ from a gas mixture, said pelletized sorbent comprising:

a first component comprising a Basic Immobilized Amine Sorbent (BIAS),

wherein the Basic Immobilized Amine Sorbent comprises an epoxy-based cross-linker,

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;

a third component comprising a polymer binder,

wherein the Basic Immobilized Amine Sorbent and the inorganic strength additive are interconnected by the polymer binder;

a CO₂ 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%.