Process of removing and recovering CO2 from fume

A flue gas removal technology, applied in chemical instruments and methods, separation methods, through absorption, etc., can solve problems such as high consumption of absorbents and equipment corrosion

Inactive Publication Date: 2007-01-03
HUAXI CHEM INST CHENGDU CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has a certain effect, from the perspective of industrial application, there are disadvantages such as high absorbent consumption and equipment corrosion, especially in the flue gas O 2 This is especially true when the impurity content is high

Method used

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  • Process of removing and recovering CO2 from fume
  • Process of removing and recovering CO2 from fume
  • Process of removing and recovering CO2 from fume

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] components

[0024] Under the same operating conditions, the figure 1 and Figure 4 A comparative experiment was carried out with the shown technological process. Experimental results show that compared with the conventional technology, the invention reduces the consumption of absorbent by 80%, and the corrosion rate of the carbon steel by the absorption liquid is reduced by 90%.

Embodiment 2

[0026] The gas source is the same as in Example 1.

[0027] Under the same operating conditions, the figure 2 and Figure 4 A comparative experiment was carried out with the shown technological process. Experimental results show that the present invention reduces the consumption of absorbent by 80% compared with the conventional process, and the corrosion rate of carbon steel by the absorption liquid is reduced by 90%, and the product CO 2 CO, SO in air 2 , NOx, O 2 The total content was reduced by 83%.

Embodiment 3

[0029] components

[0030] Under the same operating conditions, the image 3 and Figure 4 A comparative experiment was carried out with the shown technological process. Experimental results show that compared with the conventional technology, the invention reduces the consumption of absorbent by 78%, and the corrosion rate of the carbon steel by the absorption liquid is reduced by 85%.

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PUM

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Abstract

The present invention is process of removing and recovering CO2 from fume. The process includes dedusting and cooling fume in a water washing tower, counter current contacting fume with absorbent in an absorption tower for absorbing CO2 from the fume, making the absorbent with CO2 absorbed enter a flash tower or a stripping tower to separate O2, SO2, NOx, CO and other impurity from the rich liquid, heat exchange of the rich liquid in a heat exchanger, making the rich liquid enter a regeneration tower to obtain high purity CO2 and regenerate absorbent in the tower bottom, heat exchange of the regenerated absorbent and returning the regenerated absorbent to the absorption tower for reuse.

Description

Technical field: [0001] The present invention relates to a method for removing and recovering carbon dioxide from flue gas. Background technique: [0002] Flue gases from boilers, gas turbines, and lime kilns contain large amounts of CO 2 , CO 2 It is a greenhouse effect gas with a wide range of uses, such as food preservation, puffed tobacco, and the production of methanol and urea. Therefore, it is urgent to develop new processes and methods for removing and recovering carbon dioxide from flue gas. At present, the industry usually adopts alcohol amine method to remove and recover CO 2 . [0003] O contained in the flue gas 2 , SO 2 , NOx, CO and other impurities, these impurities will irreversibly react with the alcohol amine component in the absorbent, which will increase the consumption of alcohol amine and increase the corrosion of the absorbent to the equipment. The existing main method to solve this problem is to add antioxidants, corrosion inhibitors, etc. to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/62
CPCY02C10/06Y02A50/20Y02C20/40
Inventor 肖九高王俊昌汪志和曾轲
Owner HUAXI CHEM INST CHENGDU CITY
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