炼油技术与工程 ›› 2021, Vol. 51 ›› Issue (1): 10-12.

• 加工工艺 • 上一篇    下一篇

器外预硫化加氢裂化催化剂开工技术应用总结

王仲义1, 闫作杰2, 单敏3, 陈平平4, 童健3   

  1. 1.中国石油化工股份有限公司大连石油化工研究院,辽宁省大连市 116045;
    2.中国石油天然气股份有限公司抚顺石化分公司,辽宁省抚顺市 113001;
    3.中国石化扬子石油化工有限公司,江苏省南京市 210048;
    4.福建联合石油化工有限公司,福建省泉州市 362800
  • 收稿日期:2020-05-15 修回日期:2020-10-26 出版日期:2021-01-15 发布日期:2021-07-16
  • 作者简介:王仲义,副研究员,本科,主要从事加氢裂化工艺研究工作。E-mail:wangzhongyi.fshy@sinopec.com。

Application summary of Start-up technology of ex-situ presulfiding Hydrocracking catalyst

Wang Zhongyi1, Yan zuojie2, Shan Min3, Chen Pingping4, Tong Jian3   

  1. 1. SINOPEC Dalian Research Institute of Petroleum and Petrochemicals, Dalian, Liaoning 116045;
    2. PetroChina Fushun Petrochemical Company, Fushun, Liaoning 113001;
    3. SINOPEC Yangzi Petrochemical Company Ltd., Nanjing, Jiangsu 210048;
    4. Fujian Refining & Petrochemical Co., Ltd., Quanzhou, Fujian 362800
  • Received:2020-05-15 Revised:2020-10-26 Online:2021-01-15 Published:2021-07-16

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摘要： 将器外预硫化技术应用于Ⅱ类活性中心催化剂中,通过试验确定了双技术耦合过程中存在的问题:在提温过程中存在160 ℃以及180 ℃的放热集中现象。提出了在低压条件下增设100,120,140 ℃的恒温过程以及在130 ℃条件下的升压过程,该“双恒”技术降低了工业应用时可能出现的风险。工业应用结果表明:对于要求在较高温度下进行高压提升操作的加氢裂化装置,在保证催化剂床层温度平稳的前提下,在系统压力为4.8 MPa时增加不同的恒温段,满足了升压过程中反应器器壁温度不低于120 ℃的要求,然后在130 ℃恒温条件下逐级升压,实现了装置的气密及催化剂的活化,彻底解决了开工过程热量叠加的问题,消除了安全隐患。

关键词: 器外预硫化, 加氢裂化, 催化剂, 气密方案, 开工技术, 活化过程

Abstract: The ex-situ presulfiding technology is applied to the type Ⅱ active center catalyst, and the problems in the coupling process of the two technologies are determined through the experimental process. There are 160 ℃ and 180 ℃ exothermic concentration phenomenon in the process of temperature rising. It is proposed to add 100, 120,140 ℃ constant temperature process under low pressure condition and pressure rise process under 130 ℃ . The “double constant” technology reduces the possible risks in industrial application. The results of commercial application show that for the hydrocracking unit which requiring high-pressure lifting operation at a higher temperature, different constant temperature sections are added when the system pressure is 4.8 MPa on the premise that the catalyst bed temperature is stable, which meet the requirement that the wall temperature is not less than 120 ℃.The step-by-step boosting pressure can be carried out under the constant temperature of 130 ℃. The air tightness of the device and activation of the catalyst is realized. The problem of heat superposition in the start-up process is thoroughly solved. The potential safety hazard is eliminated.

Key words: ex-situ presulfiding, hydrocracking, catalyst, air tightness scheme, start-up technique, activation process