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提出以椰壳预炭化料为骨料、酚醛树脂为黏结剂制备变压吸附空分制氮用炭分子筛的新工艺路线,包括成型、炭化、水蒸气活化、两步苯气相碳沉积调孔等主要工序;完善了炭分子筛的变压吸附空分评价手段,即以变压吸附空分为基本手段,结合变压吸附脱附尾气总量及其中O_2浓度等参数分析,准确表征炭分子筛制备过程中样品的微孔孔容和孔径变化,从而实现对炭分子筛制备工艺参数的精确控制.所得的椰壳基炭分子筛具有较高的抗压强度,其变压吸附空分性能接近商业炭分子筛产品.
Proposed a new coconut shell pre-carbonized material as aggregate, phenolic resin as binder for pressure swing adsorption of nitrogen molecular sieve nitrogen process, including forming, carbonization, water vapor activation, two-step benzene carbon deposition and other holes The main steps of this study are: to improve the evaluation method of pressure swing adsorption air separation of carbon molecular sieve, that is to say, the pressure swing adsorption air separation is the basic measure. Combining the parameters of pressure swing adsorption desorption tail gas and O_2 concentration, In order to control the preparation parameters of carbon molecular sieve.The obtained coconut shell-based carbon molecular sieve has higher compressive strength, and its pressure-swing adsorption air-separation performance is close to commercial carbon molecular sieve product .