Search International and National Patent Collections

1. (WO2018080266) GAS TREATMENT METHOD AND GAS TREATMENT APPARATUS

Pub. No.:    WO/2018/080266    International Application No.:    PCT/KR2017/012100
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Tue Oct 31 00:59:59 CET 2017
IPC: B01D 53/52
B01D 53/62
B01D 53/58
B01D 53/14
Applicants: POSCO
주식회사 포스코
Inventors: CHO, Moon Kyung
조문경
PARK, Ju Yong
박주용
CHOI, Hye Ji
최혜지
SIM, Hyung Do
심형도
KWON, Woo Taeck
권우택
CHANG, Sea Duck
장세득
CHOI, Han Young
최한영
Title: GAS TREATMENT METHOD AND GAS TREATMENT APPARATUS
Abstract:
According to the present invention, a gas treatment method comprises the steps of: supplying, to a carbon dioxide collector, a mixture gas in which a gas to be treated and ammonia gas are mixed, and cooling the mixture gas so as to generate carbon dioxide-captured ammonium carbonate, thereby separating the carbon dioxide from the gas to be treated; and capturing hydrogen sulfide from the gas to be treated, which was discharged from the carbon dioxide collector after carbon dioxide was separated therefrom, separating the hydrogen sulfide and ammonia, and generating sodium hydrogen sulfide. Therefore, according to an embodiment of the present invention, a gas treatment apparatus can improve a hydrogen sulfide capture rate by selectively capturing carbon dioxide before capturing hydrogen sulfide, and thus the quality of sodium hydrogen sulfide to be produced can be improved.