催化裂化装置长周期运行的研究

发布时间：2018-10-22 12:30

【摘要】：大庆炼化公司1.0Mt/aARGG装置目前运行周期较短,存在不定期停工抢修的问题,在长周期运行方面与国内外同行业比较还存在很大的差距。论文针对一套ARGG装置的运行情况,对影响长周期运行的因素和原因进行了较为深入的分析和研究,结果表明,主要因素包括:(1)反应系统中提升管和沉降器的结焦;(2)油浆系统中油浆蒸汽发生器管束内的结焦堵塞及CRC改造后设备不匹配加重了系统结焦;(3)催化剂跑损;(4)设备管线中余锅系统结垢,再生器衬里脱落,中压内取热管线泄露及三旋单管结垢等设备腐蚀和结垢;(5)机组设备中烟机结垢引起的故障。为了达到使装置长期平稳运行的目的,本文对针对以上各个主要因素提出了优化改进措施,具体包括:(1)通过原料优化和操作优化来减缓反应系统和分馏系统结焦;(2)从加强旋风分离器回收效率和防止催化剂热崩等措施防止催化剂跑损;(3)采取优化原料、优化反再系统的操作条件、优化催化剂品种以及严格控制烟机和三旋的运行工况等措施,全面的改善烟机结垢的问题;(4)通过采取优化操作,材料升级等措施,解决了因腐蚀导致管线泄漏堵塞等问题;(5)通过完善管理措施,尤其强调加强对装置的日常监控和科学的管理工作,延长设备使用寿命,挺高装置运行周期。通过改进,ARGG装置运行中存在的问题得到明显的改善,设备故障率大大降低,机组非计划停机和装置非计划停工次数明显减少,生产维护成本显著降低,经济效益和社会效益显著。
[Abstract]:The operation period of 1.0Mt/aARGG plant in Daqing Refinery and Chemical Company is relatively short at present, and there is a problem of stoppage and rush repair, and there is still a big gap between the long period operation of the plant and that of the same industry at home and abroad. In this paper, according to the operation of a set of ARGG equipment, the factors and reasons that affect the long-period operation are analyzed and studied in depth. The results show that, The main factors include: (1) coking of riser and settler in reaction system; (2) coking blockage in pipe bundle of slurry steam generator in slurry system and equipment mismatch after CRC modification aggravated coking of system; (3) loss of catalyst; (4) pipe of equipment. Fouling of waste pot system in line, Regenerator lining falling off, medium pressure internal heat pipe leakage, tri-rotating single pipe scaling and other equipment corrosion and scaling; (5) the fault caused by smoke machine scaling in unit equipment. In order to make the device run smoothly for a long time, this paper puts forward the optimization and improvement measures aiming at the above main factors. These include: (1) reducing coking in reaction and fractionation systems through feedstock optimization and operational optimization; (2) preventing catalyst loss by enhancing cyclone separator recovery efficiency and preventing catalyst thermal collapse; and (3) optimizing raw materials, Optimizing the operating conditions of the reverse resystem, optimizing the type of catalyst and strictly controlling the operating conditions of the smoke machine and the tri-rotating system, and so on, to comprehensively improve the scaling problem of the smoke machine; (4) by taking measures such as optimizing operation, upgrading the material, etc. The problems such as pipeline leakage and blockage caused by corrosion are solved. (5) through perfecting management measures, it is especially emphasized to strengthen the daily monitoring and scientific management of the equipment, to prolong the service life of the equipment and to have a high operating period. Through the improvement, the problems existing in the operation of the ARGG plant are obviously improved, the failure rate of the equipment is greatly reduced, the number of unplanned outages of the unit and the unplanned shutdown of the unit are obviously reduced, and the cost of production and maintenance is significantly reduced. Economic and social benefits are remarkable.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE96

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