Abstract: Abstract:Along with the environmental requirement becomes more and more strict, to dismantle the flue gas bypass becomes a new research topic. Taking the Luohe Power Generation Company Limited as example, the significance of demolition of flue gas bypass in limestonegypsum wet desulphurization system was analyzed. The feasibility of the desulphurization system logical control scheme before and after demolition of the bypass was expounded. The result in this paper can be used as reference for handling with similar problems.

Key words: Keywords:desulphurization system, flue gas bypass, operation practice, logical scheme