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

An adsorption recovery, high-sulfur technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems affecting the oxidation of sulfite, the effect is not significant, and it is in the laboratory stage, etc., to achieve low cost and strong Economical effect

Active Publication Date: 2020-11-17
锐智信息科技(滨州)有限公司
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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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  • A kind of adsorption and recovery of CO in flue gas with high sulfur content <sub>2</sub> Methods

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Embodiment Construction

[0034] The present invention is described in further detail now in conjunction with accompanying drawing and embodiment. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, so it only shows the constructions related to the present invention.

[0035] The device used in this example is figure 1 As shown, it includes a dissolution tank 1, a magnetic separator 2, a desulfurization tower 3, an adsorber 4, a decarbonization tower 5, a settling tank 6, a fine desulfurization tower 7, and a fine settling tank 8; wherein the desulfurization towers are arranged sequentially from top to bottom Demister 3-4, injection pipe 3-3, spray pipe 3-2, oxidation tank 3-1 in the tower, oxidation tank 3-1 in the tower through the external slurry circulation pipeline and injection pipe 3-3, spray The pipe 3-2 is connected, and the outlet pipe at the top of the desulfurization tower is divided into two, one of whi...

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Abstract

The invention discloses a method for absorbing and recycling CO2 in flue gas with high sulphur content. The method comprises the following steps: dissolving acetylene sludge in water to remove carbonand produce calcium carbonate, separating reducing substances in the calcium carbonate and acetylene sludge through the settlement action of a settling tank, and finally feeding the obtained acetylenesludge into a desulfurizing tower to perform desulfuration. The method realizes thickening of the content of carbon dioxide in flue gas to meet the requirement of recycling carbon dioxide through anadsorption device, and is high in economical efficiency.

Description

technical field [0001] The application relates to a method for absorbing and recovering CO2 in flue gas with high sulfur content, in particular to a method for desulfurizing and decarbonizing flue gas with high sulfur content using carbide slag as raw material and recovering CO2 therein. Background technique [0002] The country pays more and more attention to environmental protection, and the development of SO 2 The governance work has become an important task in many factories. The flue gas desulfurization work started relatively late in my country, and there are still relatively few mature desulfurization technologies, most of which are still in the stage of accumulating engineering experience. Whether using CaCO 3 , CaO or Ca(OH) 2 , the common principle is through chemical reaction to make calcium element Ca(OH) 2 Form and SO in flue gas 2 reaction to generate CaSO 3 and CaSO 4 . However, SO in the flue gas emitted by ordinary thermal power plants 2 The content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/75B01D53/78B01D53/62B01D53/80B01D53/50B01D53/02C01B32/50
CPCB01D53/02B01D53/502B01D53/62B01D53/75B01D53/78B01D53/80B01D2251/404B01D2251/604B01D2251/606B01D2257/504B01D2258/0283Y02C20/40Y02P20/151
Inventor 李雪琴
Owner 锐智信息科技(滨州)有限公司
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