炼油技术与工程 ›› 2024, Vol. 54 ›› Issue (7): 17-20.

• 加工工艺 • 上一篇    下一篇

延迟焦化装置液化石油气降低总硫技术改造总结

周翔   

  1. 中国石油化工股份有限公司镇海炼化分公司
  • 收稿日期:2024-03-09 出版日期:2024-07-15 发布日期:2024-07-15
  • 作者简介:周翔,工程师,本科,2011年毕业于常州大学化学工程与工艺专业,从事工艺技术管理工作。联系电话:15088860660,E-mail: zhouxiang.zhlh@sinopec.com

Summary of Technical Transformation for Reducing Total Sulfur in Liquefied Petroleum Gas of Delayed Coking Unit

Zhou Xiang   

  1. Sinopec Zhenhai Refining & Chemical Company
  • Received:2024-03-09 Online:2024-07-15 Published:2024-07-15

摘要: 中国石油化工股份有限公司镇海炼化分公司1号产品精制装置焦化液化石油气脱硫脱硫醇系统,通过使用脱羰基硫溶剂UDS、纤维膜替代、投用碱液再生系统,解决了精制焦化液化石油气羰基硫高、脱硫醇效果差、碱渣外排量高等问题,使得焦化液化石油气羰基硫脱除率达到90%以上,精制焦化液化石油气产品羰基硫的质量浓度由999 mg/m³降至10 mg/m³以内,远低于去气分装置回收丙烯的质量要求(质量浓度不大于60 mg/m³)。自投入使用运行以来,回收焦化液化石油气中丙烯,每年可增加经济效益约4063万元。为同类型装置焦化液化石油气降低总硫工艺优化提供了参考借鉴。

关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">延迟焦化装置, 液化石油气, 总硫, 羰基硫, 硫醇, UDS溶剂, 纤维膜反应器, 碱液再生

Abstract: The desulfurization and mercaptan removal system of the cooking liquefied petroleum gas in the No. 1 product refining unit of SINOPEC Zhenhai Refining & Chemical Company has solved the problems of high carbonyl sulfide, poor desulfurization efficiency, and high alkali residue discharge in the refined cooking liquefied petroleum gas by using decaboxylate sulfur solvent UDS, fiber membrane replacement, and alkali regeneration system. The carbonyl sulfide removal rate in the cooking liquefied petroleum gas has reached over 90%, and the mass concentration of carbonyl sulfur in the refined product has decreased from 999 mg/m³ to within 10 mg/m³, which is far below the quality requirements for propylene recovery in the degassing unit (the mass concentration should not exceed 60 mg/m³). Since its commissioning, the recovery of propylene from the cooking liquefied petroleum gas can increase economic benefits by approximately 40.63 million yuan per year, providing a reference for optimizing the total sulfur reduction process of cooking liquefied petroleum gas in similar units.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">delayed coking unit, LPG, total sulfur, carbonyl sulfide, mercaptan, UDS solvent, fiber membrane reactor, alkali regeneration