The mass concentration of chloride ion in desulfurization slurry has always been an important controlled object for desulfurization system of thermal power plants. The experimental measurement of mass concentration of chloride ion in slurry is not only time-consuming and laborious

but also impossible to measure in real time. In this paper

according to the operation of slurry discharge pump and the DCS monitoring data of the power plant

based on the traditional material balance model and iterative algorithm

the calculation model for mass concentration of chloride ion in slurry is established

and the change of mass concentration of chloride ion in slurry is simulated and calculated based on the actual unit operating conditions. The study shows that

the calculation results of the model are basically consistent with the experimental measurements

with an average percentage error of 4.44%

which verifies the effectiveness of the model to some extent. Subsequently

combining with the actual operation of the power plant

the chlorine migration of the unit is analyzed and targeted Scenario analysis is carried out from two perspectives of the source and destination of chlorine in the absorption tower

and corresponding optimization operation suggestions are given. This model can realize real-time simulation of mass concentration of the chlorine ion in the slurry in the absorption tower

and has important engineering application value for timely replenishment and discharge of the desulfurization system of the power plant

as well as reducing the discharge of desulfurization wastewater

and ensuring the stable operation of the desulfurization system.