化工进展2013，Vol.32Issue(3)：712-716,5.DOI:10.3969/j.issn.1000-6613.2013.03.040
化学汽提新工艺
Research on new chemical stripping technology
董群 1李楠 1刘乙兴 1赵玲伶 1刘沙 1白树梁 1武可新1
作者信息
摘要
Abstract
A study on chemical stripping technology was carried out in a small fixed-fluidized bed, using Daqing crude oil mixed with vacuum residue or FCC slurry as feedstock. Relative gas yield, relative coke decrement and coke content were used to evaluate stripping efficiency. Product components and stripping efficiency of chemical stripping technology and vapor stripping technology were experimentally compared. The influence of temperature, ratio of adding regenerant, reaction temperature, catalyst-oil ratio on stripping efficiency and stripping temperature were also investigated. The results showed stripping efficiency increased first, then stayed steady with the increase of catalyst-oil ratio and temperature of adding regenerant. It increased with the increase of catalyst-oil ratio, decreased with the increase of reaction temperature. The stripping temperature growth of heavy feedstock is lower than that of the light one, when increasing the temperature and ratio of adding regenerant. With chemical stripping technology, the stripping efficiency increased by 20%, coke content of regenerated catalyst decreased by not less than 7%.关键词
催化裂化/化学汽提/再生剂/水蒸气汽提/汽提效率Key words
catalytic cracking/ chemical stripping/ regenerated catalyst/ vapor stripping/ stripping efficiency分类
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董群,李楠,刘乙兴,赵玲伶,刘沙,白树梁,武可新..化学汽提新工艺[J].化工进展,2013,32(3):712-716,5.
