Chloride ion is the key operating index in desulfurization system of power plants. Rapid and accurate monitoring of chloride ion content in desulfurization slurry is of great significance for anti-corrosion of desulfurization equipment

optimization and adjustment of operation process

as well as desulfurization waste water discharge and water saving. By studying the pretreatment method of sample

a high-efficiency composite medium filter is developed

and the method suitable for the desulfurization system sample pretreatment is studied

and the laboratory test is carried out. At the same time

by studying the principle of online measurement method of chloride ion in desulfurization system

a solid polymer membrane chloride selective electrode is developed

and on-line monitoring technology of chloride ion in desulfurization system of power plant is developed

and the accuracy test in laboratory and field industrial application test are carried out. The results show that

the technology can realize continuous and accurate online monitoring of chloride ion content in desulfurization slurry

reduce the workload of laboratory personnel greatly

and improve the accuracy of chloride ion measurement. It is of great significance to realize the economic and intelligent operation of desulfurization system equipment.