Flue gas desulfurization degreasing defoaming agent and preparation method thereof

Abstract

The invention discloses a flue gas desulfurization degreasing defoaming agent and a preparation method thereof. The flue gas desulfurization degreasing defoaming agent comprises 10% to 20% of Tween 80; 10% to 20% of alkylphenol polyoxyethylene ether; and 60% to 80% of a non-ionic defoamer, the non-ionic defoamer is ethylene oxide block polymer polyether or propylene epoxide block polymer polyether. The flue gas desulfurization degreasing defoaming agent has the advantages of thorough degreasing, fast defoaming, long defoaming time, acid and alkali resistance, high temperature resistance, and integrated degreasing, defoaming and foam suppression functions, and can be widely applied to power plant limestone wet flue gas desulfurization systems.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a flue gas desulfurization, degreasing and defoaming agent and a preparation method thereof. Background technique [0002] Flue gas desulfurization refers to the removal of sulfur oxides from flue gas or other industrial waste gases produced during the combustion of coal and other fossil fuels. It is the most effective and main technical means to control acid rain and sulfur dioxide pollution. The soot, sulfur dioxide and nitrogen oxides produced during the production process of power plant flue gas have caused environmental pollution to surrounding areas. According to environmental protection requirements, polluted equipment, especially power plant flue gas, must be treated. At present, the flue gas desulfurization of domestic power plants is mainly based on the limestone wet FGD desulfurization process, but when the boiler coal combustion is insufficient or the bo...

AI Technical Summary

Problems solved by technology

At present, the flue gas desulfurization of domestic power plants is mainly based on the limestone wet FGD desulfurization process, but when the boiler coal combustion is insufficient or the boiler oil gun is put into operation, the slurry in the absorption tower during the operation of the desulfurization device will be polluted by oil, and Causing foaming and overflowing of the slurry, calcium carbonate particles are wrapped by oil film, which reduces the dissolution rate of calcium carbonate, resulting in low desulfurization efficiency and difficulty in dehydration of gypsum, etc.