Abstract: The wet desulfurization system of a 5 000t/d cement clinker production line operates poorly when the inlet sulfur dioxide concentration is high,in order to meet the local environmental emission standards for SO2 emissions at the outlet of the chimney outlet , the desulfurization system has been optimized and upgraded.This article analyzes the current situation and existing problems in parameter settings, system processes, production operations, etc. of slurry preparation systems, absorption tower systems, gypsum dewatering systems, etc.Proposed solutions include adding vibration devices to improve material blockage in the feeder, controlling the pH and density values of the slurry in the absorption tower slurry pool area, controlling excessive dust and low sealing pressure of the circulating pump, and adjusting the moisture content of gypsum.After the desulfurization system renovation, the SO2 emission concentration at the chimney outlet remained stable at <35mg/Nm3. At the same time, this article proposes precautions for shutdown of wet desulfurization systems and control strategies for system feed liquid balance and chemical reaction balance.
