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Removal of SO 2 from flue gas using a new semidry flue gas desulfurization process with a powder‐particle spouted bed
Author(s) -
Ma Xiaoxun,
Kaneko Takao,
Guo Qimin,
Xu Guangwen,
Kato Kunio
Publication year - 1999
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.5450770222
Subject(s) - flue gas desulfurization , flue gas , waste management , environmental science , particle (ecology) , materials science , engineering , geology , oceanography
A spouted bed of binary particle mixture was applied to a low temperature desulfurization process in order to develop a new type of semidry flue gas desulfurization (FGD) technology. We investigated the effects of operating parameters, such as type of SO 2 sorbent, diameter of SO 2 sorbent particles, apparent residence time of gas in the bed, approach to saturation temperature and Ca/S molar ratio, on SO 2 removal in a bench‐scale powder‐particle spouted bed. We also investigated the utilization rate of SO 2 sorbent and ways to enhance the efficiency of SO 2 removal and SO 2 sorbent utilization. The experimental results showed that SO 2 removal is significantly affected by the approach to saturation temperature and Ca/S molar ratio, and that a high SO 2 removal efficiency and effective sorbent utilization can be obtained under appropriate operating conditions. Thus, this new simple process of flue gas desulfurization is highly efficient and has little impact on the environment.