Removal of SO 2  in Semi‐Dry Flue Gas Desulfurization Process with a Powder‐Particle Spouted Bed | Zendy

Nakazato Tsutomu | Zendy; Liu Yunyi | Zendy; Kato Kunio | Zendy

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Removal of SO 2 in Semi‐Dry Flue Gas Desulfurization Process with a Powder‐Particle Spouted Bed

Author(s) -

Nakazato Tsutomu,

Liu Yunyi,

Kato Kunio

Publication year - 2004

Publication title -

the canadian journal of chemical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 67

eISSN - 1939-019X

pISSN - 0008-4034

DOI - 10.1002/cjce.5450820114

Subject(s) - flue gas desulfurization , sorbent , slurry , lime , inert , particle size , chemical engineering , particle (ecology) , saturation (graph theory) , flue gas , materials science , waste management , chemistry , metallurgy , adsorption , composite material , organic chemistry , engineering , oceanography , mathematics , combinatorics , geology

Semi‐dry flue gas desulfurization was investigated with several kinds of SO 2 sorbents, such as slaked lime, limestone, Mg(OH) 2 and concrete pile sludge, in a powder‐particle spouted bed. Slurry droplets including sorbent fine particles were fed to a spouted bed of coarse inert particles spouted with hot gas containing SO 2 . SO 2 removal efficiency was strongly affected by the approach to saturation temperature, Ca/S molar ratio and particle size of sorbent. Slaked lime showed the highest desulfurization efficiency. In this process, despite very short gas residence time, more than 90% SO 2 removal was easily achieved by choosing appropriate conditions.

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