【作者】 王涛；

【导师】 崔璐； 刘长庆；

【作者基本信息】 西安石油大学 ， 动力工程（专业学位）， 2015， 硕士

【摘要】 延安石油化工厂20万吨/年聚丙烯装置压缩机目前运行周期较短,每年都需要停工进行检修,不定期抢修,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。通过系统的分析研究结果表明,影响压缩机装置长期平稳运行的主要因素有:1)循环冷却水水质较差,冷换设备换热效果不好;2)气阀故障;3)压缩机分液罐效果差;3)工艺介质带油带粉严重;5)丙烯流量波动;6)助催化剂等化工原料注入量过大7)其它设备故障引起压缩机停机。论文通过对影响聚丙烯压缩机长周期运行的几个重要因素进行深入研究,在分析总结出原因的基础上,对各个因素针对性地提出了优化改进措施:1)改变局部水质,并增加冷换面积较大的换热器;2)选用双缓冲结构气阀及抗油粘滞气阀;3)增加过滤器;4)调整洗涤塔循环量,控制洗涤塔中铝含量(质量分数);5)化工原料加入比例的调节;6)装置重要设备的参数优化和改造。通过改进,使得聚丙烯装置运行周期明显延长,设备故障检修频次降低,机组非计划停机及装置非计划停工次数明显减少,生产维护成本显著降低,创造了巨大的经济效益和社会效益,研究结果对国内同类企业具有一定的借鉴和参考作用。更多还原

【Abstract】 200kt/a polypropylene unit compressor in Yan,an petrochemical plant has a short running period, and it needs to be stopped for maintenance and repair. The main factors affecting the long-term running of the compressor are: 1) Poor water quality of circulating cooling water; 2) Technology medium with oil and powder; 3) Propylene flow fluctuation; 4) Valve malfunction; 5) The effect difference of the compressor is poor; 6) Other equipment failure causes the compressor to stop.Through the research of several important factors affecting the operation of the pilot period, the paper analyzes the reasons and puts forward the optimized improvement measures: 1) Changing the local water quality, increasing the heat exchanger with large cooling area; 2) Enhance washing, reduce the fine powder and oil carried in propylene gas; 3) Adjustment of the proportion of chemical raw materials; 4) Control of aluminum content(mass fraction) in the washing tower; 5) Increase filter; 6) Parameter optimization and transformation of the device.This through the improvement, the operation period of polypropylene plant is obviously prolonged, the frequency of equipment maintenance is reduced, the number of unplanned shutdown and non-planned shutdown of the unit is reduced significantly, and the maintenance cost is reduced significantly.更多还原