石油化工设计 ›› 2025, Vol. 42 ›› Issue (3): 39-43.

• 工程应用 • 上一篇    下一篇

丁二烯装置聚合物产生原因分析优化措施

姚首领 张瑞丽 王守勇   

  1. 浙江石油化工有限公司,浙江省舟山市,316000
  • 收稿日期:2024-12-28 出版日期:2025-08-25 发布日期:2025-08-25
  • 作者简介:姚首领,男,2021年毕业于中国石油大学(北京)化学工程与工艺专业,工程师,主要从事石油化工装置生产管理工作。联系电话:0580-8265318.

Cause Analysis of Polymer Generation in Butadiene Plants and the Optimization Measures

Yao Shouling , Zhang Ruili ,Wang Shouyong   

  1. Zhejiang Petrochemical Co., Ltd., Zhoushan, Zhejiang, 316000
  • Received:2024-12-28 Online:2025-08-25 Published:2025-08-25

摘要:

丁二烯系统中聚合物的生成是运行不可回避的难题,针对丁二烯装置循环溶剂中聚合物超标的问题,提出优化调整的方法,并针对丁二烯生产过程中再沸器堵塞和再沸器出口阀因聚合物聚集导致阀门压盖胀裂的现象,提出了相应的防聚合方案,首先,对辅助阻聚剂的注入点位置进行调整,使循环乙腈中辅助阻聚剂的分布更均匀,达到阻聚的目的,其次、过系统阀门形式进行技改,通过在阀门压盖处增加流通线减少死区的方式,减少了聚合物的产生,从而达到丁二烯装置长周期安全平稳运行的目的。

关键词: 丁二烯, 乙腈, 工艺优化改造, 聚合, 堵塞

Abstract:

The generation of polymers in butadiene plants is an inevitable challenge in operation. This paper proposes an optimization method to solve the problem of excessive polymers in the circulating solvent of butadiene plants, and proposes a corresponding anti-polymerization scheme for the blockage of reboiler during butadiene production and the expansion and cracking of the gland of reboiler outlet valve due to polymer aggregation. Firstly, the injection points of auxiliary polymerization inhibitor are repositioned to ensure a more uniform distribution of the auxiliary polymerization inhibitor in the circulating acetonitrile solvent, thus achieving the purpose of polymerization inhibition. Secondly, technical transformation is carried out for the valve form of the system by installing flow lines at the valve gland to reduce the dead zone, thus achieving the purposes of reducing polymer generation and ensuring long-term, safe and stable operation of butadiene plants.

Key words: butadiene, acetonitrile, process optimization and transformation, polymerization, blockage