CAJ | 학술논문

随着常规石油资源日趋紧张和原油重质化，重油加氢处理过程越来越受到重视。由于重油分子在催化剂孔道中的受限扩散阻力影响着催化加氢反应速率和催化剂的利用率，因此研究重油分子在催化剂孔道中的内扩散行为及规律对指导加氢催化剂优化设计和加氢催化剂有效利用具有重大意义。本文介绍了重油分子孔内受限扩散研究的膜池法、吸附-扩散法和扩散-反应动力学法，指出相较于膜池法和吸附-扩散法，由扩散-反应动力学法研究所得结果更能反映在反应条件下重油孔内的受限扩散行为及规律，具有更广泛的应用价值；并简述了重油分子孔内扩散受限因子的研究进展，分析了用于重油孔内扩散行为及规律研究的多孔材料，指出孔结构均一的模型催化剂是一种利于扩散研究的理想多孔材料。
수착상규석유자원일추긴장화원유중질화，중유가경처리과정월래월수도중시。유우중유분자재최화제공도중적수한확산조력영향착최화가경반응속솔화최화제적이용솔，인차연구중유분자재최화제공도중적내확산행위급규률대지도가경최화제우화설계화가경최화제유효이용구유중대의의。본문개소료중유분자공내수한확산연구적막지법、흡부-확산법화확산-반응동역학법，지출상교우막지법화흡부-확산법，유확산-반응동역학법연구소득결과경능반영재반응조건하중유공내적수한확산행위급규률，구유경엄범적응용개치；병간술료중유분자공내확산수한인자적연구진전，분석료용우중유공내확산행위급규률연구적다공재료，지출공결구균일적모형최화제시일충리우확산연구적이상다공재료。
Because the diffusion resistance of residual oil in the catalyst pore influences the catalytic reaction rate and the utilization of the catalysts,research on diffusion of residual oil in the catalyst pore is of great importance for guiding the hydrogenation catalyst design and improving the utilization of hydrogenation catalyst. This paper summarized the main research methods for studying the restricted diffusion of heavy oil in catalyst pore. The reaction-diffusion kinetic method using under reaction conditions is more practical than the diaphragm cell and adsorptive methods using under non-reaction conditions. The advances of the restrictive factor of heavy oil are also briefly discussed. The analysis of the materials used in diffusion showed that the Well-Defined and Uniform Pore-structure(WDUPS) model catalyst is an ideal porous material in the diffusion study.