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Method for preparing nitrogen-producing carbon molecular sieve

A manufacturing method and molecular sieve technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as imperfect combination of process parameters and unsatisfactory compressive strength performance, and achieve low cost, long service life and high strength Effect

Active Publication Date: 2011-06-15
湖州强大分子筛科技有限公司
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Problems solved by technology

After searching, the existing publicly disclosed manufacturing process of carbon molecular sieves for nitrogen production has imperfections in raw material selection, raw material ratio, and combination of process parameters, etc., resulting in the existing carbon molecular sieves for nitrogen production. , recovery rate, compressive strength and many other aspects of performance are not ideal

Method used

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  • Method for preparing nitrogen-producing carbon molecular sieve
  • Method for preparing nitrogen-producing carbon molecular sieve

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Embodiment Construction

[0022] Example. The manufacture method of nitrogen carbon molecular sieve comprises following production steps:

[0023] a. Raw material ratio: fully mix 50 parts of flower mud, 20 parts of coal, and 5 parts of phenolic resin to obtain product A;

[0024] b. Finely pulverize, place the blocky product A in a pulverizer to fully pulverize it, and then place it in a ball mill to grind it to 2 microns to obtain product B;

[0025] c. Extrusion molding, with 50 parts of product B, 20 parts of tar, 2 parts of pitch and 0.1 part of Fe 2 o 3 , fully mixed and put into a kneader, after being kneaded by the kneader, it is formed into a granular material, that is, the so-called extrusion molding. After 20 minutes of kneading, the extrusion is formed into granules, and the diameter of the extruded particles is 1.5 mm. C product;

[0026] d. High-temperature nitrogen-based carbonization, place product C in the furnace, heat it while feeding nitrogen gas, and raise the temperature to 75...

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Abstract

The invention discloses a method for preparing a nitrogen-producing carbon molecular sieve, which comprises the following steps: a. material proportion; b. fine pulverizing; c. extruding and moulding; d. high-temperature nitrogenous-base carbonizing; e. and high-temperature nitrogenous-base pore-forming treatment. Since the material selection, the material proportioning, the process parameter combination and the like of the invention are repeatedly tested, compared, concluded and summarized by the applicant, although the production method is not changed greatly, the obtained nitrogen-producing carbon molecular sieve has very prominent effect and has superior performance in several aspects such as the concentration of the produced nitrogen, the nitrogen yield, the recovery rate, the compressive strength and the like.

Description

technical field [0001] The invention relates to a production method of nitrogen-producing carbon molecular sieves, in particular to a production method of nitrogen-producing carbon molecular sieves. Background technique [0002] Nitrogen-making carbon molecular sieve is a new type of activated carbon that almost only contains uniform micropores with a diameter of several angstroms. This pore characteristic can endow nitrogen-making carbon molecular sieve with selective adsorption performance according to its pore size and the molecular size and shape of the gas to be adsorbed. Taking advantage of this feature, nitrogen-producing carbon molecular sieves are widely used in various gas separation processes. After searching, the existing publicly available manufacturing process of carbon molecular sieves for nitrogen production has imperfections in raw material selection, raw material ratio, and combination of process parameters, etc. , recovery rate, compressive strength and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/20
Inventor 吴会荣
Owner 湖州强大分子筛科技有限公司
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