炼油技术与工程 ›› 2021, Vol. 51 ›› Issue (2): 26-29.

• 加工工艺 • 上一篇    下一篇

S Zorb装置低负荷运行出现的问题及对策

李永强, 史元杰, 冯建华   

  1. 中国石化青岛炼油化工有限责任公司,山东省青岛市 266500
  • 收稿日期:2020-11-08 出版日期:2021-02-15 发布日期:2021-07-16
  • 作者简介:李永强,工程师,本科,2013年毕业于兰州石化职业技术学院炼油技术专业,从事S Zorb装置生产工作。联系电话:13310664436,E-mail:779739622@qq.com。

Problems and countermeasures of low load operation of S Zorb unit

Li Yongqiang, Shi Yuanjie, Feng Jianhua   

  1. SINOPEC Qingdao Refining & Chemical Co., Ltd., Qingdao, Shandong 266500
  • Received:2020-11-08 Online:2021-02-15 Published:2021-07-16

PDF

摘要： S Zorb装置在长期低负荷运行中出现进料换热器偏流、反应器底部分配盘泡罩磨损严重、精制汽油产品带水、吸附剂循环故障等问题,不能满足装置在特殊情况下需要长期维持低负荷运行的需求。对S Zorb装置在长期低负荷运行中出现的问题进行了分析,并通过控制氢油比,控制吸附剂硫、碳含量,控制稳定塔汽提效果等措施,使装置能够在65%的低负荷下控制辛烷值损失小于0.5单位,烯烃损失小于1.0%,并维持长期稳定运行。

关键词: S Zorb装置, 低负荷运行, 换热器偏流, 泡罩磨损

Abstract: During the long-term low-load operation of S Zorb unit, many problems such as the feed heat exchanger bias flow, serious wear of bubble cap at the bottom plate of the reactor, water entrainment in refined gasoline products, adsorbent circulation failure occurrs, which affect the demand of equipment keeping long-term low-load operation under special circumstance. The problems of S Zorb unit in the long-term low-load operation are analyzed.By controlling hydrogen oil ratio, sulfur and carbon content of adsorbent and stripping effect of stabilizer, the unit can control the octane loss less than 0.5, olefin loss less than 1.0% under 65% low load, and maintain long-term stable operation.

Key words: S Zorb unit, low load operation, heat exchanger bias flow, blister wear