乙烯工业 ›› 2025, Vol. 37 ›› Issue (2): 30-33.

• 工业技术 • 上一篇    下一篇

乙腈法丁二烯抽提装置溶剂再生新工艺

杨光耀   

  1. 中国石化工程建设有限公司,北京,100101
  • 收稿日期:2024-09-10 修回日期:2024-11-26 出版日期:2025-06-25 发布日期:2025-06-25

New Solvent Regeneration Process for Butadiene Extraction Unit by Acetonitrile Process

Yang Guangyao.    

  1. SINOPEC Engineering Incorporation, Beijing, P,C.100101

  • Received:2024-09-10 Revised:2024-11-26 Online:2025-06-25 Published:2025-06-25
  • About author:杨光耀,男,2018年毕业于清华大学化学工程与技术专业,获工学硕士学位,现从事石油化工工艺的设计工作,工程师,已发表论文4篇。

摘要:

乙腈法丁二烯抽提装置中,循环乙腈溶剂需要连续再生来维持品质。现有工艺溶剂再生量受限,无法有效脱除大量杂质。文中开发了一种溶剂再生技术,在不改变现有工艺流程基础上,脱除醇、酮类有机物及丁二烯聚合物等杂质,得到一股乙腈含量(质量分数)94.6%的溶剂,解决溶剂再生量受限的问题,改善溶剂品质,延长装置生产周期。采用ProⅡ流程模拟,确定再生工艺精馏塔的主要工艺参数。该装置乙腈损失量低于1%,综合能耗(标油)76.25 kg/t产品乙腈。

关键词: 丁二烯, 乙腈法, 溶剂再生, 流程模拟

Abstract:

In butadiene extraction units by acetonitrile process, acetonitrile solvent needs to be continuously regenerated to maintain its quality. Solvent regeneration is limited for the existing process, and large amounts of impurities cannot be removed effectively. A solvent regeneration technology is developed. Without changing the existing process, the impurities such as alcohols, ketones and butadiene polymer can be removed to obtain a solvent with an acetonitrile content of 94.6% (mass fraction), thus solving the problem of limited solvent regeneration, improving the solvent quality and prolonging the production cycle of the unit. Pro II software is used to simulate the regeneration process and determine the main process parameters of distillation tower. Less than 1% acetonitrile is lost in this unit, and the comprehensive energy consumption per ton of acetonitrile product is 76.25 kg.

Key words: butadiene, acetonitrile process, solvent regeneration, process simulation.