Retrofitting summary of reactor internals in a liquid phase diesel hydrotreating unit

Petroleum Refinery Engineering ›› 2025, Vol. 55 ›› Issue (5): 16-20.

• PROCESS EQUIPMENT AND MACHINERY • Previous Articles Next Articles

Retrofitting summary of reactor internals in a liquid phase diesel hydrotreating unit

Yu Guanping, Qi Qingxuan, Wang Libo, Xu Xiao, Xu Kai

1.SINOPEC Shijiazhuang Refining & Chemical Company, Shijiazhuang, Hebei 050059; 2. School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237; 3. SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083

Online:2025-05-15 Published:2025-05-22

液相柴油加氢装置反应器内构件改造总结

于观平，齐庆轩，王立波，许萧，徐凯

1.中国石油化工股份有限公司石家庄炼化分公司，河北省石家庄市 050059；2. 华东理工大学机械与动力工程学院，上海市 200237；3. 中石化石油化工科学研究院有限公司，北京市 100083

作者简介:于观平，工程师，本科，从事加氢及制氢技术相关工作。E-mail：yugp.sjlh@ sinopec.com

Abstract

Abstract:

A refinery upgraded and improved the reactor in a liquid phase diesel hydrotreating unit, adopting the fractal bubble-enhanced internals. Under conditions that the key parameters remained basically unchanged, the effects of reducing operating pressure on total sulfur, reaction temperature rise, hydrogen consumption, and cetane number of the product were investigated. The results showed that, compared with traditional internals, the novel internals increased the gas holdup and hydrogen dissolution rate in the hydrotreating reactor, significantly improved the hydrogen replenishment mass transfer ability from gas phase to liquid phase, ensuring more uniform reactions. When the system pressure was reduced to 8.0 MPa, the sulfur content of the product diesel remained compliant at 7.5 μg/g, meeting the requirements of the indicators, and the hydrogen consumption decreased by about 20%. This retrofit involved minimal modifications, low workload, and low investment, without disrupting the normal production cycle of the unit. This will provide a model for energy-saving upgrades in similar hydrotreating units.

Key words: liquid phase diesel hydrotreating unit, reactor, fractal internals, momentum foam breaker, pressure drop, reaction pressure, chemical hydrogen consumption, reaction temperature rise

摘要：

某炼油厂对液相加氢装置反应器进行了升级改造，采用了分形气泡强化传质反应器内构件，在装置关键操作参数基本保持不变的条件下，考察了操作压力降低对产品总硫、反应温升、氢耗及十六烷值等指标的影响。结果表明，与传统内构件相比：新型强化传质反应器内构件提高了加氢反应器气含率与溶氢速率，由气相到液相的补氢传质能力大幅提高，反应更加均匀；在反应系统压力降至 8.0 MPa 的条件下，产品柴油硫质量分数为 7.5 μg/g，仍符合指标要求，并且可降低装置氢耗 20%左右。该技术改造对装置的改动小，工作量小、投资低，不影响装置正常生产周期，对同类加氢装置的节能改造起到了示范作用。

关键词: 液相柴油加氢装置, 反应器, 分形内构件, 动量消泡器, 压力降, 反应压力, 化学氢耗, 反应温升

Yu Guanping, Qi Qingxuan, Wang Libo, Xu Xiao, Xu Kai. Retrofitting summary of reactor internals in a liquid phase diesel hydrotreating unit[J]. Petroleum Refinery Engineering, 2025, 55(5): 16-20.

于观平, 齐庆轩, 王立波, 许萧, 徐凯. 液相柴油加氢装置反应器内构件改造总结[J]. 炼油技术与工程, 2025, 55(5): 16-20.

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Retrofitting summary of reactor internals in a liquid phase diesel hydrotreating unit

液相柴油加氢装置反应器内构件改造总结

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