乙烯工业 ›› 2026, Vol. 38 ›› Issue (2): 53-59.

• 优化控制 • 上一篇    下一篇

溴化锂吸收式制冷机组在聚丙烯装置中的应用和运行优化

李秀军   

  1. 中石化宁波镇海炼化有限公司,浙江 宁波 315207
  • 收稿日期:2025-10-28 修回日期:2026-01-21 出版日期:2026-06-25 发布日期:2026-06-25
  • 作者简介:李秀军,男,2001年毕业于抚顺石油学院化学工程专业,现从事聚烯烃生产技术管理、新产品开发和技术服务工作,高级工程师。

Application and Operational Optimization of Lithium Bromide Absorption Chillers in Polypropylene Plants

Li Xiujun.    

  1. Sinopec Zhenhai Refining & Chemical Company, Ningbo, Zhejiang, P.C. 315207

  • Received:2025-10-28 Revised:2026-01-21 Online:2026-06-25 Published:2026-06-25

摘要: 溴化锂吸收式制冷机组以低品位余热为热源制备符合要求的低温冷源,适用于大型化工厂进行余热回收利用,以实现整体优化、节能降耗。文中介绍了某炼化公司供3套聚丙烯装置共用的溴化锂吸收式制冷机组的应用和运行优化,对不同条件下溴化锂机组运行工况进行讨论,分析了机组结晶、制冷效果差的原因,并提出防止结晶、提高制冷效率、节能降耗的操作方法。

关键词: 聚丙烯, 溴化锂, 制冷, 结晶, 运行优化

Abstract:

Lithium bromide absorption chillers utilize low-grade waste heat as the thermal source to generate low-temperature cooling source that meets industrial requirements, making them suitable for comprehensive waste heat recovery and utilization in large-scale chemical plants to achieve overall optimization, energy saving, and consumption reduction. This paper presents the application and operational optimization of a lithium bromide absorption chiller shared by three polypropylene units in a petrochemical company, discusses the operating conditions of the chiller, analyzes the causes of crystallization and poor cooling performance, and proposes some operation methods to prevent crystallization, enhance cooling efficiency, save energy, and reduce consumption.

Key words: polyproplene;lithium bromide, chiller, crystallization, operation optimization