Impact and preventive measures for total loss of oxidizing air on main desulfurization tower of a coalfired power plant

Abstract

Abstract:

Limestonegypsum wet flue gas desulfurization process is taken by 2×330MW subcritical coalfired units in a heatsupply power plant. After ultraclean transformation taking singletower doublecirculation technology, the absorption tower sets up two oxidation fans(one for normal operation and one for backup). During the normal operation of the unit, the oxidizing air is totally lost, which causes the increase of slurry pH in the absorption tower and the increase of SO2 mass concentration at the unit outlet. The hazards of total loss of oxidizing air in the absorption tower are analyzed, and preventive measures during operation are proposed, to ensure the safe, reliable and economical operation of the desulfurization system.

Key words:

YANG Junqiang，YANG Xiaofei.

Impact and preventive measures for total loss of oxidizing air on main desulfurization tower of a coalfired power plant [J]. Huadian Technology, 2019, 41(12): 78-80.

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Impact and preventive measures for total loss of oxidizing air on main desulfurization tower of a coalfired power plant

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