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Regular structure adsorbent and application thereof

A technology of regular structure and adsorbent, which is applied in the field of regular structure adsorbent and its preparation, can solve the problems of large volume of adsorption tower, low efficiency, complex molding of the overall structure adsorbent, etc., and achieve low preparation cost and simple and convenient preparation process Effect

Active Publication Date: 2017-05-17
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical problems of the current pressure swing adsorption process, such as large volume, low efficiency, high investment, complex and difficult molding of the overall structure adsorbent, etc., and provides a regular structure adsorbent that can be used in the rapid adsorption and separation process The molding method involved in this method is simple and efficient, and the prepared monolithic adsorbent can be used in pressure swing adsorption separation processes with short cycle periods, such as air purification and separation, hydrogen separation, methane separation and purification , carbon dioxide separation and other processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 240g of aramid fiber with a diameter of about 10μm and a length of 1mm, 620g of aramid fiber with a specific surface area of ​​600m 2 The carbon molecular sieve of / g, the polyurethane emulsion 200g of content 40%, join in 1.2L water and stir and mix, then transfer to high-speed disperser and disperse, form uniform mixed slurry;

[0034] (2) Put the mixed slurry on the paper machine for paper forming to form a paper-like material with a thickness of 0.3mm, and then roll it into a columnar monolithic structure adsorption material, dry it at 100°C for 8 hours, and vacuum activate it at 130°C for 3 hours to form a whole Structural Adsorbent.

[0035] The obtained regular structure adsorbent, Langmuir method N 2 The specific surface area is 400m 2 / g.

Embodiment 2

[0037] 200g of aramid fibers with a diameter of about 10μm and a length of 1mm have a specific surface area of ​​1500m in 700g 2 Add Cu-BTC metal-organic framework / g, 250g of polycarbonate emulsion with a content of 40%, 15g of hydroxyethyl cellulose, stir and mix in 1L of water, and then disperse in a high-speed disperser to form a uniform mixed slurry;

[0038] (2) Put the mixed slurry on the paper machine for paper forming to form a paper-like material with a thickness of 0.3mm, and then roll it into a column-shaped integral structure adsorption material, dry it at 80°C for 8 hours, and vacuum activate it at 130°C for 6 hours to form a whole Structural Adsorbent.

[0039] The obtained regular structure adsorbent, Langmuir method N 2 The specific surface area is 1000m 2 / g.

Embodiment 3

[0041] 240g of glass filaments with a diameter of about 100μm and a length of 1-2cm, 620g of a specific surface area of ​​630m 2 / g of SAPO-34 molecular sieve, 200g of sol with 40% Si / Al atomic ratio of 1, and 10g of polyacrylamide were added to 1L of water and stirred and mixed, and then transferred to a high-speed disperser to disperse to form a uniform mixed slurry ;

[0042] (2) Put the mixed slurry on the paper machine for paper forming to form a paper-like material with a thickness of 0.3mm, and then roll it into a columnar overall structure adsorption material, dry it at 100°C for 8 hours, and bake it at 500°C to form an overall structure Adsorbent.

[0043] The obtained regular structure adsorbent, Langmuir method N 2 The specific surface area is 400m 2 / g.

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Abstract

The invention discloses a regular structure adsorbent and a preparation method to greatly improve the diffusion efficiency of the adsorbent. The regular structure adsorbent is prepared from a support, an adsorbent material, a binder and other additives. The fibrous support, the powdery adsorbent material, the binder and other additives are mixed and dispersed in a solvent, a catalyst precursor is prepared firstly and then dried and activated to form the adsorbent. The regular structure adsorbent is applicable to purification separation processes of multiple gases, such as air separation, hydrogen separation, carbon dioxide separation, methane separation and the like, and the synthesis method is simple, good in repeatability and prone to industrialization.

Description

technical field [0001] The invention relates to the design and preparation of novel adsorbents and the technical field of adsorption and separation engineering of mixed gases, in particular to an adsorbent with a regular structure and a preparation method thereof. Background technique [0002] In 1960, Skarstrom proposed the PSA patent, using 5A zeolite molecular sieve as an adsorbent to separate oxygen-enriched air from the air, and it was put into industrial production in the 1960s. With the improvement of molecular sieve performance and quality, and the continuous improvement of pressure swing adsorption process, the product purity and recovery rate are continuously improved, which promotes the realization of pressure swing adsorption industrialization. In the 1980s, breakthroughs were made in the industrial application of pressure swing adsorption technology. As a chemical unit technology, it has been widely used in the separation and purification of mixed gases, mainly ...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/30B01D53/047
CPCY02C20/40
Inventor 王树东孙天军李德伏赵生生
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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