Solid carbon dioxide absorbent including amine or a compound thereof for use in the capturing process of dry carbon dioxide, and method for manufacturing same

• US 10,456,772 B2
• Filed: 11/10/2017
• Issued: 10/29/2019
• Est. Priority Date: 10/31/2011
• Status: Active Grant

• Current Assignee: Korea Electric Power Corporation (Government of South Korea), Korea Midland Power Company Limited (Government of South Korea), Korea South-East Power Co., Ltd. (Government of South Korea), Korea Western Power Company Limited (Government of South Korea), Korea South Power Company Limited
• Original Assignee: Korea Electric Power Corporation (Government of South Korea)
• Inventors: Eom, Tae Hyoung, Lee, Joong Beom, Ryu, Chong Kul, Kim, Kyeong Sook
• Primary Examiner(s): Godenschwager, Peter F
• Application Number:
  US15/809,614
• Publication Number:
  US 20180078920A1
• Time in Patent Office: 718 Days
• CPC Class Codes: B01D 2253/20 Organic adsorbents
• CPC Class Codes: B01D 2253/25 Coated, impregnated or composite adsorbents
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• 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: B01J 20/22 comprising organic material
• CPC Class Codes: B01J 20/28011 Other properties, e.g. density, crush strength
• CPC Class Codes: B01J 20/2803 Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
• CPC Class Codes: B01J 20/28061 being in the range 100-500 m2/g
• CPC Class Codes: B01J 20/3078 Thermal treatment, e.g. calcining or pyrolizing
• CPC Class Codes: B01J 20/3085 Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
• CPC Class Codes: B01J 20/3204 Inorganic carriers, supports or substrates
• CPC Class Codes: B01J 20/3248 the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
• CPC Class Codes: B01J 20/3272 Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
• CPC Class Codes: B01J 20/3295 Coatings made of particles, nanoparticles, fibers, nanofibers
• CPC Class Codes: B01J 20/3425 of sorbents or filter aids comprising organic materials
• CPC Class Codes: Y02C 20/40 of CO2

Abstract

The present invention relates to a method for manufacturing a carbon dioxide absorbent and to the absorbent manufactured by the method. The method comprises: (A) a step of preparing a slurry composition including a carrier composition containing a support, an inorganic binder, and a solvent; (B) a step of preparing solid particles by spray drying the thus-prepared slurry composition; (C) a step of manufacturing a carrier by dry calcining the thus-prepared solid particles; and (D) a step of receiving an amine compound into the pores of the thus-manufactured carrier. According to the absorbent of the present invention, an absorbing reaction and a regenerating reaction at a low temperature range (less than or equal to 100° C. may be conducted, and therefore, the cost for capturing CO₂ in a dry capturing process may be expected to decrease.

Claims

1. A carbon dioxide absorbent manufactured by a method, the method comprising the steps of:

(A) preparing a slurry composition including a carrier composition containing a support and an inorganic binder, and a solvent;

(B) preparing solid particles by spray drying the prepared slurry composition;

(C) manufacturing a carrier by dry calcining the solid particles at a temperature between about 350°

C. and about 1,000°

C. and under an atmosphere of one of air, nitrogen, helium, and a reducing gas, wherein the carrier has a specific surface area of between 50 m²/g and 500 m²/g; and

(D) receiving an amine compound into pores of the manufactured carrier.

2. The carbon dioxide absorbent of claim 1, wherein the carrier has a specific surface area of between 150 m²/g and 400 m²/g.