Preparation method for integral molecular sieve adsorbent for deep gas dehydration

A technology of deep dehydration and molecular sieve, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, etc. It can solve the problem that molecular sieve adsorbents cannot fully meet the requirements of deep gas dehydration, so as to improve the depth of dehydration and adsorption capacity and reduce dust. Yield, the effect of ensuring stability

Inactive Publication Date: 2016-09-21
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing a molecular sieve monolithic adsorbent for gas deep dehydration, mainly to solve the problem that existing molecular sieve adsorbents are difficult to fully meet the requirements of gas deep dehydration

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  • Preparation method for integral molecular sieve adsorbent for deep gas dehydration
  • Preparation method for integral molecular sieve adsorbent for deep gas dehydration
  • Preparation method for integral molecular sieve adsorbent for deep gas dehydration

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Embodiment Construction

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the mode of the present invention includes but not limited to the following embodiments.

[0038] The invention provides a method for preparing a molecular sieve monolithic adsorbent, and the prepared adsorbent can be used for deep removal of trace moisture in the air. Such as figure 1 As shown, the present invention mainly includes several major processes of raw material mixing, aging, compression molding, drying and roasting.

[0039] 1. Raw material mixing

[0040] The active molecular sieve with a particle size of less than 60 mesh, aluminum acid (for binding), extrusion aid, drying additive and inorganic fiber are uniformly mixed in a mixer to obtain a mixed dry powder. The mass percentages of active molecular sieve and alumina acid, extrusion aid, drying additive and inorganic fiber are: active molecular sieve 40%-90%, alumina acid 10%-60%, extr...

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Abstract

The invention discloses a preparation method for an integral molecular sieve adsorbent for deep gas dehydration. The problem of difficulty of a molecular sieve adsorbent in meeting a deep gas dehydration requirement is solved. The preparation method comprises the following steps: (1) uniformly mixing an active molecular sieve, aluminic acid, an extrusion assistant, a drying additive and inorganic fibers; (2) mixing mixed dry powder and water, and kneading a green body; (3) aging the green body to obtain a prepared body; (4) performing compression molding on the prepared body to obtain a cellular blank; (5) shaping, drying and aging the cellular blank; (6) performing secondary drying on the shaped, dried and aged cellular blank; (7) performing calcination and furnace cooling on the secondarily dried cellular blank to obtain the adsorbent. The adsorbent has the characteristics of strong compressive strength, high abrasion resistance, low gas passing pressure drop and high dehydration depth, and is low in cost and suitable for popularization and application, and the preparation method is simple.

Description

technical field [0001] The invention relates to an adsorbent, in particular to a method for preparing a molecular sieve monolithic adsorbent used for gas deep dehydration. Background technique [0002] With the continuous development of industrial production and technology, various gas raw materials or products often need to be deeply dehydrated to obtain highly dry gas, so as to meet the production and use requirements. For example, in the electronics industry, high-purity ammonia with a purity of more than 99.999% (5N) is an important source of nitrogen, and because water and ammonia have similar physical and chemical properties and hydrogen bonds between them, the two have high affinity. , so it is the most difficult to remove; another example is the reducing gas used to produce ultra-pure metals, the protective gas in the metal processing process, and the raw material gas for cryogenic separation of petroleum gas, etc., which also require reducing the water content as mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/30B01D53/28
CPCB01D53/261B01D53/28B01J20/16
Inventor 郑振华蒋炜黄志勇罗文华梁斌巫泉文邵正峰周丽凤
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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