US 12,005,393 B2
Flue gas low-temperature adsorption denitration system and process
Shiqing Wang, Beijing (CN); Qixiang Fan, Beijing (CN); Shisen Xu, Beijing (CN); Shiwang Gao, Beijing (CN); Shaomin Wang, Beijing (CN); He Zhao, Beijing (CN); Minhua Jiang, Beijing (CN); Ping Xiao, Beijing (CN); Bin Huang, Beijing (CN); Hongwei Niu, Beijing (CN); Jinyi Wang, Beijing (CN); and Lianbo Liu, Beijing (CN)
Assigned to HUANENG CLEAN ENERGY RESEARCH INSTITUTE, Beijing (CN)
Filed by HUANENG CLEAN ENERGY RESEARCH INSTITUTE, Beijing (CN)
Filed on Apr. 25, 2021, as Appl. No. 17/239,662.
Application 17/239,662 is a continuation of application No. PCT/CN2020/076850, filed on Feb. 26, 2020.
Claims priority of application No. 201911039134.3 (CN), filed on Oct. 29, 2019.
Prior Publication US 2021/0245096 A1, Aug. 12, 2021
Int. Cl. B01D 53/56 (2006.01); B01D 53/04 (2006.01); B01D 53/26 (2006.01)
CPC B01D 53/56 (2013.01) [B01D 53/0462 (2013.01); B01D 53/265 (2013.01); B01D 2253/102 (2013.01); B01D 2257/404 (2013.01); B01D 2257/80 (2013.01); B01D 2258/0283 (2013.01); B01D 2259/40003 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A flue gas adsorption denitration system, comprising a booster fan (1), a cold energy recoverer (2), a flue gas cooling system (3), a flue gas switching valve (4), a first denitration adsorption tower (5), and a second denitration adsorption tower (6),
wherein the flue gas cooling system (3) cools flue gas to a temperature below 25° C., an inlet of the booster fan (1) is in communication with an inlet flue gas pipeline, an outlet of the booster fan (1) is in communication with a hot-side inlet of the cold energy recoverer (2), a hot-side outlet of the cold energy recoverer (2) is in communication with an inlet of the flue gas cooling system (3), a flue gas outlet of the flue gas cooling system (3) is in communication with an inlet of the flue gas switching valve (4), an outlet of the flue gas switching valve (4) is respectively in communication with a flue gas inlet of the first denitration adsorption tower (5) and a flue gas inlet of the second denitration adsorption tower (6), a flue gas manifold (7) is provided on a flue gas pipeline leading to the cold energy recoverer (2), a flue gas outlet of the first denitration adsorption tower (5) and a flue gas outlet of the second denitration adsorption tower (6) are in communication with an inlet of the flue gas manifold (7), and an outlet of the flue gas manifold (7) is in communication with a cold-side inlet of the cold energy recoverer (2),
wherein the flue gas cooling system (3) comprises a primary cooling system and a secondary cooling system; the primary cooling system is an air cooling system, a heat exchanger cooling system, or a water cooling system; the secondary cooling system is a compression refrigeration system or an absorption refrigeration system; and the flue gas cooling system (3) is provided with a flue gas condensate water outlet, and the flue gas condensate water outlet is in communication with a water inlet of a water treatment system.