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Device and method for capturing carbon dioxide in flue gas

A carbon dioxide and flue gas technology, applied in chemical instruments and methods, separation methods, chemical separation, etc., can solve problems such as secondary pollution, complex process, ammonia gas generation, etc., achieve enhanced mass transfer and heat transfer, and ensure degassing The effect of removing efficiency and increasing bed density

Active Publication Date: 2012-10-10
FUJIAN LONGKING DSDN ENGINEERING CO LTD
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  • Abstract
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Problems solved by technology

The patent process is complicated, the cost is uneconomical, and ammonia gas is generated in the intermediate link, which is easy to cause secondary pollution

Method used

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  • Device and method for capturing carbon dioxide in flue gas

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Embodiment Construction

[0022] see figure 1 , the embodiment of the processing device for capturing flue gas carbon dioxide according to the present invention is provided with a circulating fluidized reaction absorption tower 2, an absorbent warehouse 5, a bag filter 4, a material circulation chute 6 and a warehouse pump 7, and the circulating fluidized The reaction absorption tower 2 is respectively provided with a mixing zone 21, a Venturi acceleration zone 22 and a circulating fluidized reaction absorption zone 23 from bottom to top. It is connected to the circulating fluidized reaction absorption zone 23 through the Venturi acceleration zone 22; the outlet of the absorbent bin 5 is connected to the absorbent inlet of the mixing zone 21, and the flue gas outlet of the circulating fluidized reaction absorption zone 23 is absorbed by the circulating fluidized reaction The outlet flue 3 of the tower 1 is connected to the flue gas inlet of the bag filter 4, and the material outlet of the ash hopper 41...

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Abstract

The invention discloses a device and a method for capturing carbon dioxide in flue gas, and relates to flue gas treatment. The device is provided with a circulating fluidization reaction absorption tower, a bag-type dust collector, an absorbent bin, a material circulating chute and a bin pump; the tower is provided with a mixing area, a venturi acceleration area and a circulating fluidization reaction absorption area; the inlet of the mixing area is connected with an inlet flue of the tower; the mixing area is connected with the absorption area through the venturi acceleration area; the outlet of the absorbent bin is connected with an absorbent inlet of the mixing area; a flue gas outlet of the absorption area is connected with the bag-type dust collector through an outlet flue of the tower; a material outlet of an ash hopper arranged on the lower part of the bag-type dust collector is connected with the mixing area through the material circulating chute; and a purified gas outlet of the bag-type dust collector is connected with a chimney. The flue gas enters the tower through the inlet flue of the tower, is premixed with an absorbent from the absorbent bin and materials circulating back from the material circulating chute in the mixing area, and is primarily decarbonized; the flue gas passes through the venturi acceleration area and enters the absorption area; and the flue gas enters the bag-type dust collector through the outlet flue of the tower to become clean flue gas, and the clean flue gas enters the chimney through a draught fan.

Description

technical field [0001] The invention relates to flue gas treatment, in particular to a treatment device and method for capturing carbon dioxide by utilizing a circulating fluidized bed and using carbide slag. Background technique [0002] With the process of industrialization and the development of economy and society, the air pollution and greenhouse effect caused by the burning of fossil fuels have seriously threatened the earth environment on which human beings depend. Global warming and greenhouse effect are common challenges to the sustainable development of all countries. Among the greenhouse gases in the atmosphere, carbon dioxide occupies the first place, reaching more than 75%. Therefore, the solution is to find low-cost and effective solutions to reduce carbon dioxide emissions. [0003] In recent years, research work on carbon dioxide emission reduction at home and abroad can be summarized into the following four aspects: [0004] 1) Source control, to achieve e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/83B01D53/62
CPCY02C10/04Y02A50/20Y02C20/40
Inventor 商旺火林驰前张原郑进朗詹威全王建春
Owner FUJIAN LONGKING DSDN ENGINEERING CO LTD
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