XI Yanlong1, ZHOU Shuaishuai2, LU Chunxi2
(1. Sinopec Shijiazhuang Refining & Chemical Company, Shijiazhuang, 050099, China;2. China University of Petroleum (Beijing), College of Chemical Engineering and Environment, Beijing, 102249)
Abstract: In order to raise fluid catalytic cracking (FCC) regeneration efficiency and reduce the usage of fire accelerator, the Crosser baffles developed by China University of Petroleum (Beijing) is used. There are many parallel passageways on the Crosser baffles and each one has series of inclined guide vanes. The incline angles of these guide vanes are contrary in the adjacent passageways. By breaking the bubbles in the regenerator, the mass transfer between the bubbles and the catalysts is intensified. At the same time, the baffles suppressed the back mixing of the catalysts and optimized the catalysts residence time distribution, which raised the regeneration efficiency. The experiment was carried out in an commercial scale FCC regenerator with a capacity of 2,200,000 ton/year. The industrial data indicates that, by adopting the Crosser baffles, the regenerated catalysts carbon contention reduced from 0.103% to 0.059% (by weight for catalysts carbon contention all through the paper); the temperature difference in the dilute phase reduced from 28.6 ℃ to 17.6 ℃; the usage of fire accelerator reduced by 32.9% and the radial temperature difference is reduced by 50%.
Keywords: fluid catalytic cracking；regeneration process optimization；baffles
中图分类号：TE624 文献标志码：A
收稿日期： 2019-04-09， 修回日期：2019-05-06，在线出版时间：2019-06-25 16:28。
基金项目：国家自然科学基金项目，编号：91534111。
第一作者简介：郗艳龙(1976—)，男，高级技师，研究方向为石油化工。E-mail:xiyanlong.sjlh@sinopec.com。
通信作者简介：卢春喜(1963—)，男，博士，教授，博士生导师，研究方向为过程强化。E-mail：lcx725@sina.com。
文章编号：1008-5548(2019)05-0039-06
DOI:10.13732/j.issn.1008-5548.2019.05.007
