Method for preparing nitrogen-producing carbon molecular sieve

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 ...

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