	US 12,434,185 B2
	Process for capturing CO2 and process for continuously regenerating solvent
Jadson Claudio Belchior, Belo Horizonte (BR); Geison Voga Pereira, Belo Horizonte (BR); Plinio Cesar De Carvalho Pinto, Sao Mateus (BR); Thais Vieira Batista, Belo Horizonte (BR); Pedro Caffaro Vicentini, Rio de Janeiro (BR); and Luciana Neves Loureiro, Rio de Janeiro (BR)
Appl. No. 17/414,647
Filed by UNIVERSIDADE FEDERAL DE MINAS GERAIS, Belo Horizonte (BR); PETROLEO BRASILEIRO S.A.-PETROBRAS, Rio de Janeiro (BR); FUNDACAO DE AMPARO A PESQUISA DO ESTADO DE MINAS GERAIS-FAPEMIG, Belo Horizonte (BR); and FCA FIAT CHRYSLER AUTOMOVEIS BRASIL LTDA, Betim (BR)
PCT Filed Dec. 17, 2019, PCT No. PCT/BR2019/050543 § 371(c)(1), (2) Date Nov. 24, 2021, PCT Pub. No. WO2020/124184, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 102018076758-5 (BR), filed on Dec. 20, 2018.
Prior Publication US 2023/0302400 A1, Sep. 28, 2023
Int. Cl. B01D 53/62 (2006.01); B01D 53/14 (2006.01); B01D 53/78 (2006.01); B01D 53/96 (2006.01)

CPC B01D 53/1493 (2013.01) [B01D 53/1425 (2013.01); B01D 53/1475 (2013.01); B01D 53/62 (2013.01); B01D 53/78 (2013.01); B01D 53/96 (2013.01); B01D 2251/306 (2013.01); B01D 2251/604 (2013.01); B01D 2252/103 (2013.01); B01D 2252/202 (2013.01); B01D 2252/504 (2013.01); B01D 2257/504 (2013.01)]

7 Claims

1. A process for capturing CO₂, characterized by using alkaline chemical solvent, water, and alcohols, comprising the following steps:

(a) preparing a hydroalcoholic solution consisting of water and at least one alcohol at a concentration of 2.5%-75% v/v;

(b) preparing a mixture consisting of the hydroalcoholic solution obtained in step (a) and at least one alkali hydroxide, wherein the concentration of alkali hydroxide in the mixture is 0.5 mol/L to 2 mol/L;

(c) placing the mixture obtained in step (b) in direct contact with a gas mixture containing CO₂, thus promoting the separation of CO₂from the gas mixture containing CO₂.