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Carbon dioxide capture system and method capable of inhibiting volatilization of absorbing agent

A carbon dioxide and liquid carbon dioxide technology, applied in the field of flue gas purification, can solve the problems of increasing equipment investment and operation and maintenance costs, and achieve the effects of reducing investment costs and operating costs, reducing losses, and simple structure

Pending Publication Date: 2019-08-13
HUANENG CLEAN ENERGY RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some measures are adopted in many methods, such as installing a washing section in the absorption tower to suppress the volatilization of the absorbent, but this increases the investment and operation and maintenance costs of the equipment

Method used

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  • Carbon dioxide capture system and method capable of inhibiting volatilization of absorbing agent
  • Carbon dioxide capture system and method capable of inhibiting volatilization of absorbing agent
  • Carbon dioxide capture system and method capable of inhibiting volatilization of absorbing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The flue gas passes through the flue gas inlet pipe 1 in the lower section of the absorption tower at a distance of 2.0m 3 The flow rate per hour is injected into the absorption tower 2, the volume concentration of carbon dioxide in the flue gas is adjusted to 14%, and the temperature is controlled at 40° C. after flowing out of the combustion chamber and passing through the condenser. Monoethanolamine is used as the carbon dioxide absorber, and its weight ratio is 30wt%, and the absorber circulation rate is set to 100ml / min, and the absorber temperature that goes out of the regeneration tower 4 and passes through the poor-rich heat exchanger 11 and enters the upper section of the absorption tower 2 is set to 40°C , the interior of the absorption tower 2 includes two layers of packed beds (IMTP#25 and Koch-glitsch, respectively) using annular bulk packing. The surface of the filler on the packing bed is coated with a layer of hydrophilic polyurethane-based polymer film,...

Embodiment 2

[0047] Except that the surface of the filler in the absorption tower 2 is coated with a hydrophilic polymethyl methacrylate polymer film with a thickness of 0.5 mm, all other conditions are the same as in Example 1.

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Abstract

The invention discloses a carbon dioxide capture system and method capable of inhibiting volatilization of an absorbing agent, and belongs to the technical field of flue gas purification. By arranginga hydrophilic filler assembly in an absorption tower, one the one hand, the contact area of the absorbing agent and flue gas can be increased, and therefore, the reaction activity of the absorbing agent and the flue gas is improved; on the other hand, the hydrophilic filler assembly can improve the effect of separating the carbon dioxide from other gases in the flue gas, and loss of water and theabsorbing agent on the upper section of the absorption tower is greatly reduced. Compared with a traditional carbon dioxide capture system, because a significant inhibition effect on the volatilization of the absorbing agent can be achieved, it is not required that a water wash section and a pump and other associated device are arranged in the absorption tower to recover water and absorbing agentsteam which are discharged along with decarburized flue gas, the investment cost and the running cost of the device are reduced, and the system construction is simplified.

Description

technical field [0001] The invention belongs to the technical field of flue gas purification, and in particular relates to a carbon dioxide capture system and method for suppressing volatilization of absorbents. Background technique [0002] Global warming due to industrial development activities and the continuing rise in the concentration of carbon dioxide in the atmosphere has become a growing problem. The main reason for the rise in atmospheric carbon dioxide concentrations is the energy industry's use of fossil fuels such as coal, oil and liquefied natural gas. Since the beginning of industrialization in the early nineteenth century, acid gases in the atmosphere, such as carbon dioxide (CO 2 ), methane (CH 4 ), hydrogen sulfide (H 2 S), carbonyl sulfide (COS), etc. have increased in concentration, and have risen rapidly since the middle of the twentieth century. As global warming intensifies due to rising concentrations of greenhouse gases, regulations on emissions ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18
CPCB01D53/18B01D53/1475B01D2258/0283
Inventor 郜时旺沈在球李知炫郭鲁尚吴东勋牛红伟王金意汪世清郭东方
Owner HUANENG CLEAN ENERGY RES INST
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