【摘要】 近年来,针对催化裂化装置结焦问题开展了多种形式的技术攻关,取得了较好的成果,目前油浆循环系统和反应油气管道及分馏塔底的结焦问题得到了有效解决,但沉降器旋风分离系统和沉降器顶部的结焦问题依然比较突出,影响催化裂化装置的长周期运行。文章以多家企业催化裂化装置沉降器结焦现象和特点为研究对象,结合沉降器结焦机理和结焦防治技术的改造应用进行探索和攻关,为解决沉降器结焦问题提供技术支持和指导,为催化裂化装置的长周期运行提供帮助。更多还原

【Abstract】 In recent years,a variety of technical breakthroughs have been carried out to solve the coking problem in FCC unit,and good results have been achieved. At present, coking problems in slurry circulation system,fractionator bottom and reaction oil and gas pipeline have been solved effectively,yet coking problems in the top of settler and cyclone separation system of settler have not been fundamentally solved,which affects the longterm operation of catalytic cracking unit.This paper takes the coking phenomenon and characteristics of the settler of a number of enterprises in the catalytic cracking unit as the research object.Combining with the coking mechanism of the settler and the modification and application of the coking prevention technology,it explores and tackles the key problems.This provides technical support and guidance for solving the coking problem of settlers,and it also provides help for the long-term operation of the catalytic cracking units.更多还原