摘 要：本文介紹了膜技術(shù)的發(fā)展現(xiàn)狀、應(yīng)用前景和炭膜的制備、應(yīng)用、氣體分離機理研究進展，并詳細闡述了以熱塑性酚醛樹脂為原料，利用炭化法制備非對稱氣體分離炭膜，的過程以及機理模擬研究的基本方法，考察了制備條件對氣體分離炭膜性能的影響。

　　　論文中討論了涂膜次數(shù)、涂膜時間、支撐體等影響條件對氣體分離炭膜的制備及分離效果的影響，確定了最合適的制膜條件和工藝路線，并制得了具有一定分離能力的氣體分離炭膜。實驗結(jié)果表明：由于膜表面針眼或缺陷存在的影響，只有少部分制備的膜樣品表現(xiàn)出了分子篩分機理，但只要進一步研究，改進制備方法，是能夠制備出氣體分離性能良好的氣體分離炭膜的。論文還同時對影響氣體分離因子的一些因素進行了討論，并探討了膜材料的炭化機理。

　　　炭膜氣體分離機理主要包括努森擴散、毛細冷凝、表面擴散、分子篩分四種方法，論文對H2、02、N2、C02五種氣體在膜孔內(nèi)的吸附和傳遞過程進行了分析，利用浸漬法涂膜，制備管狀氣體分離炭膜，考察了涂膜液次數(shù)、涂膜時間對炭膜氣體透過性的影響。實驗結(jié)果表明:隨著涂膜液次數(shù)和涂膜時間的增加 N2、H2、O2、CO2、Ar的滲透速率下降 H2 /N2的分離系數(shù)明顯增加。氣體在分離炭膜內(nèi)主要以分子篩分方式通過。結(jié)論：適宜的涂膜時間和次數(shù)可以提高氣體分離炭膜的分離效果。

關(guān)鍵詞： 炭膜  氣體分離  炭化條件

Abstract:This article describes the development status of membrane technologies and the application prospect and the carbon membrane preparation, application of gas separation mechanism of progress, and elaborated on the process of thermoplastic phenolic resin as a raw material, the use of the carbonization Preparation of asymmetric gas separation carbon membrane, as well asthe basic mechanism simulation study investigated the influence of preparation conditions on gas separation carbon membrane performance.

　　　Investigated the impact of the coating time, coating number of factors on the preparation of carbon membrane and gas separation, determine the appropriate membrane process route and conditions, and with some gas separation carbon membrane.The experimental results show that: exist due to the membrane surface defects or the eye of a needle, only part of the film samples showed the molecular sieving effect, to further improve the preparation method, can be prepared by the gas separation performance of carbon membranes for gas separation. The paper also a number of factors affect the gas separation factor is discussed, and explore the mechanism of carbonization of the membrane material.

　　　Carbon membrane gas separation mechanism of Knudsen diffusion, capillary condensation, surface diffusion, molecular sieving four methods, papers H2, 02, N2, C02 five kinds of gas adsorption and transfer processes in the membrane pores was analyzed, the use of impregnatedprepared by the gas separation membrane of tubular carbon investigated the time of the coating liquid, coating the number of carbon membrane gas permeability and selectivity. The results show that: with the time of the coating liquid and coating the increase in the number of H2, N2, of CO2, O2 permeation rate of decline in H2 / N2 separation factor increases. Carbon membrane supported by the porous structure of the body and on the cover of dense separation layer, the gas mainly by molecular sieving carbon membrane. The results showed that: a suitable coating time and frequency can improve the gas separation carbon membrane separation. 

Key Words：carbon membrane  Gas Separation  Carbonization conditions