A kind of adsorption and recovery of CO in flue gas with high sulfur content 2 s installation

Abstract

The invention discloses a device for adsorbing recovery of CO2 from flue gas with high sulfur content. According to the device, carbide slag is dissolved in water and decarburized firstly, and calciumcarbonate is produced; calcium carbonate and reducing substances in the carbide slag are separated under the sedimentation action of a sedimentation pool, finally, the obtained carbide slag is introduced into a desulfurizing tower for desulfurization, concentration of CO2 in the flue gas is increased, so that the requirement of CO2 recovery by an adsorber is met, and the device has quite high economic efficiency.

Description

Technical field [0001] The present application relates to a carbide slag as the raw material for the high sulfur content of flue gas desulfurization and decarbonization wherein the CO2 recovering apparatus for recovering high sulfur adsorption apparatus CO2 from flue gas, and particularly to. Background technique [0002] Countries more and more attention to environmental protection, to carry out SO 2 The governance has become an important task for many factories. Our flue gas desulfurization work started late, mature desulfurization technology is still relatively small, the majority remain in the accumulation stage of engineering experience. Whether using CaCO 3 , CaO or Ca (OH) 2 , Which are common principle by a chemical reaction, so that calcium in a Ca (OH) 2 Morphology and flue gas SO 2 The reaction to produce CaSO 3 And CaSO 4 . However, flue gas emissions of an ordinary thermal power plants in SO 2 Content is generally less than 1%, while for some sulphide smelter flue ga...

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Problems solved by technology

[0004] Since the main component of carbide slag is Ca(OH) 2 Therefore, many enterprises and scientific research institutes have carried out research work on desulfurization using carbide slag as raw material, but generally speaking, this work is still in the laboratory stage

One of the main reasons is that calcium carbide slag contains a certain amount of reducing ions, especially S2-, which absorbs SO 2 Not much effect, but it seriously affects the oxidation of sulfite

In response to this problem, Hangzhou Tianlan Environmental Protection Equipment Co., Ltd. proposed a method of oxidation outside the tower, and some companies also proposed to add a strong oxidant to carbide slag to oxidize sulfide, but the effect of the above method in practice is not significant

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