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Carbon dioxide adsorbent, carbon dioxide adsorption tower and carbon dioxide recovery system

A carbon dioxide and adsorbent technology, applied in other chemical processes, chemical instruments and methods, gas treatment, etc., can solve the problems of poor adsorption capacity and unable to meet the needs of carbon dioxide recovery and utilization in the cement industry, and achieve strong adsorption capacity and promote harmony Good development and stability

Active Publication Date: 2017-09-01
BEIJING LIULIHE CEMENT +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a carbon dioxide adsorbent to alleviate the technical problems that existing solid carbon dioxide adsorbents have poor adsorption capacity and cannot meet the needs of cement industry carbon dioxide recovery and utilization

Method used

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  • Carbon dioxide adsorbent, carbon dioxide adsorption tower and carbon dioxide recovery system
  • Carbon dioxide adsorbent, carbon dioxide adsorption tower and carbon dioxide recovery system
  • Carbon dioxide adsorbent, carbon dioxide adsorption tower and carbon dioxide recovery system

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preparation example Construction

[0049] In a preferred embodiment of the present invention, the preparation method of the above-mentioned carbon dioxide adsorbent comprises the following steps:

[0050] (a) subjecting alumina, silica, analcime, calcium zeolite, carbon molecular sieves and carbon nanotubes to plasma treatment;

[0051] (b) putting the plasma-treated alumina, silicon oxide, analcime, calcium zeolite, carbon molecular sieve and carbon nanotubes into the alkali metal compound solution for pre-soaking;

[0052] (c) Baking and drying the pre-soaked product so that the alkali metal compound is attached to the surface of alumina, silicon oxide, analcime, calcium zeolite, carbon molecular sieve and carbon nanotubes to obtain a carbon dioxide adsorbent precursor ;

[0053] (d) Calcining the precursor of the carbon dioxide adsorbent to obtain the carbon dioxide adsorbent.

[0054] In step (a), the surface area of ​​aluminum oxide, silicon oxide, analcime, calcium zeolite, carbon molecular sieve and ca...

Embodiment 1

[0075] figure 1 For the carbon dioxide adsorption tower provided in this embodiment 1; as figure 1 As shown, the carbon dioxide adsorption tower provided in this embodiment includes a tower body 401, the top of the tower body 401 is provided with an exhaust port 402, the bottom of the tower body 401 is provided with an air inlet 403, and the bottom of the tower body 401 is provided with an air inlet port 403, the inside of the tower body 401 is provided with an air inlet 403, the inside of the tower body 401 is provided with a carbon dioxide adsorbent 404, the bottom of the tower body 401 is provided with a gas distributor 405, and the gas distributor 405 communicates with the air inlet 403, The top of the tower body 401 is also provided with a gas collector 406, the gas collector 406 is connected with the exhaust port 402, and the inside of the tower body 401 is also provided with a baffle plate 407 for supporting the carbon dioxide adsorbent 404, and the baffle plate 407 is ...

Embodiment 2

[0077] This embodiment provides a carbon dioxide adsorption tower. The difference between this embodiment and Embodiment 1 is that the carbon dioxide adsorbent filled in the carbon dioxide adsorption tower is mainly made of the following raw materials in parts by mass: 20 parts of alumina, 15 parts of silicon, 10 parts of analcite, 10 parts of calcium zeolite, 20 parts of carbon molecular sieve, 15 parts of carbon nanotube, 10 parts of alkali metal compound, the alkali metal compound is a mixture of lithium silicate, sodium sulfate and potassium aluminate, and three The molar ratio of the latter is 2:1:1.

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Abstract

The invention provides a carbon dioxide adsorbent, a carbon dioxide adsorption tower and a carbon dioxide recovery system and relates to the technical field of gas adsorption. The carbon dioxide adsorbent is mainly prepared from the following raw materials in parts by mass: 15-20 parts of aluminum oxide, 15-20 parts of silicon oxide, 10-15 parts of analcite, 10-15 parts of scolecite, 10-15 parts of a carbon nanotube, 10-15 parts of a carbon molecular sieve and 10-20 parts of an alkali metal compound. The carbon dioxide adsorbent alleviates the technical problem that an existing solid carbon dioxide adsorbent is poor in adsorption capacity and high in regenerating difficulty and cannot meet the demand of recycling cement industrial carbon dioxide, and the technical effects that a lot of carbon dioxide can be quickly adsorbed, the demand of recycling cement industrial carbon dioxide is met, no harmful and toxic substances in the adsorption process are discharged, and harmonious development of environment and society can be effectively promoted are achieved.

Description

technical field [0001] The invention relates to the technical field of gas adsorption, in particular to a carbon dioxide adsorbent, a carbon dioxide adsorption tower and a carbon dioxide recovery system. Background technique [0002] Carbon dioxide is one of the main components of greenhouse gases that cause global warming, contributing 55% to the greenhouse effect. my country is the world's largest cement producer, and the carbon dioxide emitted by the cement industry accounts for about 20% of the total carbon dioxide emissions from industrial production in my country. Therefore, the cement industry is facing great pressure to reduce carbon dioxide emissions. [0003] At present, the most direct and effective measure to reduce carbon dioxide emissions in the cement industry is to capture and recycle carbon dioxide in cement kiln flue gas. Solution absorption is the most commonly used capture method, that is, by using solvents (organic amines or cold ammonia) to convert carb...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01D53/02B01D2253/102B01D2253/104B01D2253/106B01D2253/108B01D2253/112B01D2253/116B01D2257/504B01J20/04B01J20/045B01J20/08B01J20/10B01J20/103B01J20/16B01J20/165B01J20/20Y02C20/40
Inventor 张国亮黄岚朱延臣张伟顾军吴存根李衍位百勇刘宾
Owner BEIJING LIULIHE CEMENT
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