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A high-efficiency separation of CO in moisture 2 Adsorbent and preparation method thereof

An adsorbent and moisture technology, which is applied in the field of adsorbents for efficient separation of CO2 in wet gas and its preparation field, can solve problems such as low efficiency of adsorbents, and achieve the effects of low cost of raw materials, improved hydrophobicity, and low operation difficulty.

Active Publication Date: 2019-10-08
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the fact that most of the flue gas produced by fossil fuel combustion in industrial production contains water vapor, the purpose of the present invention is to provide a method for efficiently separating CO in wet gas. 2 Sorbent and preparation method thereof to solve the problem of inefficiency of existing sorbents in wet gas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In this example, the adsorbent is a composite material with 13X zeolite molecular sieve as the core phase and polypyrrole as the shell phase. The preparation process is as follows:

[0021] First, mix 0.75g of powdery cetyltrimethylammonium bromide (CTAB), 2g of zeolite 13X and 50g of water, stir at room temperature for 30min, and then separate the solid from the liquid to obtain a solid; then measure 400ml of pH=0.8 Nitric acid solution, add the separated solid into the nitric acid solution, stir at 65°C for 15 minutes to obtain a suspension; then add 0.2ml of pyrrole monomer to the suspension, and stir at room temperature for 30 minutes; finally 10ml of 1mol / L ferric chloride solution was added dropwise to the mixed solution, stirred at room temperature for 1h, aged at room temperature for 24h, centrifuged, washed and dried to obtain CO 2 Sorbent samples.

[0022] The results of the examples show that the present invention can be used for adsorption and separation of...

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PUM

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Abstract

This invention belongs to CO 2 In the field of adsorption, it involves a method that can efficiently separate CO from moisture 2 Adsorbent and preparation method thereof, used for adsorption and separation of CO in moisture under industrial conditions 2 . Polypyrrole (PPy) is used to hydrophobically modify 13X zeolite molecular sieve. 13X zeolite molecular sieve is used as the core phase and polypyrrole (PPy) is used as the shell phase to form the core-shell material zeolite13X@PPy to achieve CO in moisture. 2 adsorption separation. The invention uses low raw material cost and simple process, fully utilizes the physical and chemical properties of 13X zeolite molecular sieve and polypyrrole, and maintains good CO 2 While increasing the adsorption capacity, it also improves the hydrophobicity of 13X zeolite molecular sieve. CO of the present invention 2 The adsorbent meets the requirements of CO in the moisture produced after the combustion of fossil fuels in industrial production. 2 Separation conditions, so there is no need to dry the flue gas, reducing the corresponding equipment costs.

Description

technical field [0001] The invention belongs to CO 2 In the field of adsorption, it involves a kind of high-efficiency separation of CO in moisture 2 Adsorbent and preparation method thereof for adsorption and separation of CO in wet gas under industrial conditions 2 . Background technique [0002] Since the industrial revolution, the use of fossil fuels has been increasing, and the environmental problems brought about by people have gradually been paid attention to. CO 2 As one of the exhaust gases in industrial production, it is also an important part of greenhouse gases. Its large emissions lead to global warming, rising temperatures, and damage to ecosystems. Therefore, the separation of CO from industrial waste gas 2 appears to be crucial. [0003] In the separation of industrial waste gas CO 2 Among the various processes, adsorption separation is a mature and widely used technology, and activated carbon and zeolite are the most commonly used CO 2 the adsorbent. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCB01D53/02B01D2257/504B01J20/18B01J20/26Y02C20/40
Inventor 刘丽影杜涛周立峰孟达
Owner NORTHEASTERN UNIV LIAONING