ABSORBENT FOR SEPARATING CARBON DIOXIDE FROM GAS MIXTURE

• Main Authors: SONG, HO JUN, JEONG, HONG GI, LEE, MAN SIG
• Format: Patent
• Language: English; Korean
• Published: 23.01.2019
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The present invention provides a method for separating carbon dioxide from a gas mixture, comprising the steps of: (a) bringing an absorbent in contact with carbon dioxide (CO_2) to manufacture a final absorbent that has absorbed CO_2; (b) separating a part or all of the CO_2 from the final absorbent to manufacture a recycled absorbent; (c) bringing the recycled absorbent in contact with a gas mixture containing CO_2 to manufacture a saturated absorbent in which CO_2 is reabsorbed; and (d) separating the CO_2 from the saturated absorbent and regenerating the saturated absorbent. The method of the present invention can more efficiently perform the carbon dioxide removal than the conventional absorbent when the carbon dioxide is separated from the gas mixture. 본 발명은 (a) 흡수제에 이산화탄소(CO)를 접촉시켜 CO가 흡수된 최종흡수제를 제조하는 단계; (b) 상기 최종흡수제에서 CO의 일부 또는 전부를 분리하여 재순환흡수제를 제조하는 단계; (c) 상기 재순환흡수제를 CO가 포함된 혼합가스와 접촉시켜 CO가 재흡수된 포화흡수제를 제조하는 단계; 및 (d) 상기 포화흡수제에서 CO를 분리하고 포화흡수제를 재생하는 단계;를 포함하는 혼합가스에서 이산화탄소를 분리하는 방법이 제공된다.