Abstract:The smelting flue gas from the MAERZ refining furnace of Guixi Smelter of Jiangxi Copper Co., Ltd. is cooled and dusted, and the hydrogen peroxide desulfurization process is used to remove sulfur dioxide and meet the emission standard. The liquid level of Venturi tower and desulfurization tower is unstable, the desulfurization efficiency is low, and the industrial water consumption is large. In order to alleviate or even eliminate the above phenomena, the original process has been optimized and technologically improved by adding a gas-liquid separation tower and a gas distributor, adopting a frequency conversion control mode for the circulating pump of the desulfurization tower, optimizing the method of adding hydrogen peroxide, and improving the circulating pipeline to achieve serial and parallel control of the circulating liquid in the desulfurization tower. Through the above process optimization and technological improvement, the utilization rate of hydrogen peroxide has been improved, and the industrial water and electricity consumption, as well as the discharge of dilute and waste acids, have been reduced.