METHOD FOR LOW TEMPERATURE ADSORPTION AND DESULFURIZATION OF FLUE GAS

WIPO Patent Application WO/2021/232692

A1

A method for low temperature adsorption and desulfurization of flue gas. The method comprises the following steps: flue gas containing SO 2 entering into a flue gas cooling system (1), cooling the flue gas to below room temperature by means of the flue gas cooling system (1), then removing moisture from the flue gas by means of a dehumidification system, then feeding same into an adsorption and desulfurization system (2), adsorbing SO 2 from the flue gas by means of activated carbon, active coke or a molecular sieve in the adsorption and desulfurization system (2) and then removing same, and finally, after the cooling capacity recovery of the flue gas, discharging same via a chimney or same entering an external flue gas purification system for a further purification treatment. The method has a higher adsorption capacity for SO 2, and a higher safety, while also having lower consumption of an adsorbent.

WANG SHIQING (CN)
FAN QIXIANG (CN)
XU SHISEN (CN)
GAO SHIWANG (CN)
WANG SHAOMIN (CN)
ZHAO HE (CN)
JIANG MINHUA (CN)
XIAO PING (CN)
HUANG BIN (CN)
NIU HONGWEI (CN)
WANG JINYI (CN)
LIU LIANBO (CN)

PCT/CN2020/126258

November 25, 2021

November 03, 2020

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CHINA HUANENG GROUP CO LTD (CN)
HUANENG CLEAN ENERGY RES INST (CN)

B01D53/04; B01D53/26

CN111569604A	2020-08-25
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CN111495111A	2020-08-07
CN111495118A	2020-08-07
CN109513341A	2019-03-26
JPS524477A	1977-01-13
CN101370564A	2009-02-18
CN110743313A	2020-02-04
JP2013188649A	2013-09-26

XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)

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