Petroleum Refinery Engineering ›› 2025, Vol. 55 ›› Issue (2): 20-23.

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Exploration and practice summary of long-term operation of fixed bed residue hydrogenation unit

Long You¹, Yu Jinghu¹, Chen Bo¹, Wang Luyao²   

  1. 1.SINOPEC Maoming Petrochemical Company； 2.SINOPEC (Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd.
  • Online:2025-02-15 Published:2025-02-25

固定床渣油加氢装置长周期运行探索与实践总结

龙有¹，余镜湖¹，陈波¹，王璐瑶²   

  1. 1.中国石油化工股份有限公司茂名分公司； 2.中石化（大连）石油化工研究院有限公司
  • 作者简介:龙有，高级工程师，2009年毕业于广东工业大学，从事石油炼制装置管理优化工作，获得多项省部级科技进步奖。联系电话：13828695455，E-mail: longyou.mmmsh@sinopec.com。

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Abstract:

In order to extend the operation period of the fixed bed residue hydrogenation unit, SINOPEC Maoming Petrochemical Company adopted a complete set of fixed bed residue hydrogenation reactor internals technology to carry out technical upgrading of the fixed bed residue hydrogenation unit and installed deposit inhibiting flow equalizing plate and new distributor disk in the head space of the hydrogenation reactor. Under the quality of feedstock is similar, during a longer operation period after the upgrading, the first reactor pressure drop of the residue hydrogenation unit is 0.13 MPa, which is much lower than the operation period before the upgrading; the total pressure drop is 1.2 MPa, which is also lower than before the upgrading. By comparing the pressure drop trend of different reactors before and after the transformation, the increase in pressure drop of the first and second reactors is greatly delayed, making the total pressure drop of the system stable. Deposits with heights of about 320 mm and 120 mm are found in the deposit inhibiting flow equalizing plate of the first and second reactors. It is verified that this technology can effectively intercept deposits, delay the rise of reactor pressure drop, and prolong the operation cycle of the unit.

Key words: fixed bed, residue hydrogenation unit, long-term operation, accumulated dirt, deposit inhibiting flow equalizing plate, new distribution disk, total pressure drop, pressure drop of the first reactor

摘要：

为延长固定床渣油加氢装置的运行周期，中国石油化工股份有限公司茂名分公司采用成套固定床渣油加氢反应器内件技术对固定床渣油加氢装置进行了技术改造，在加氢反应器封头空间安装了阻垢均流盘和新型分配器。在原料性质相近的情况下，改造后渣油加氢装置第一反应器（一反）压力降为0.13 MPa，远低于改造前，总压力降为1.2 MPa，也低于改造前。改造后一反、第二反应器（二反）压力降的上升趋势被大大延缓，系统总压力降整体平稳。在一反、二反的阻垢均流盘中分别发现了厚度约320、120 mm的沉积垢物，验证了该技术能有效拦截垢物，延缓反应器压力降上升，延长装置运行周期。

关键词: 固定床, 渣油加氢装置, 长周期运行, 积垢物, 阻垢均流盘, 新型分配盘, 总压力降, 一反压力降