乙烯工业 ›› 2021, Vol. 33 ›› Issue (1): 62-64.

• 三剂 • 上一篇    

混合碳四全加氢催化剂第一次再生过程分析

董万军   

  1. 中国石油四川石化有限责任公司,四川 成都 611930
  • 收稿日期:2019-11-20 修回日期:2020-10-25 出版日期:2021-03-25 发布日期:2021-03-24
  • 作者简介:董万军,男,2010年毕业于大连理工大学化学工程专业,主要从事技术生产工作

Analysis of the First Regeneration Process of Mixed C4 Hydrogenation Catalyst

Dong Wanjun   

  1. PetroChina Sichuan Petrochemical Company Limited, Chengdu, Sichuan, P.C.611930

  • Received:2019-11-20 Revised:2020-10-25 Online:2021-03-25 Published:2021-03-24

摘要:

混合碳四来自由丁二烯抽提装置、MTBE装置生产的含炔碳四、炼厂轻烃回收装置生产的重碳四组成,该部分碳四经过全加氢饱和后,其中的烯烃和炔烃后可作为裂解原料。混合碳四中烯烃含量(摩尔分数)较高,通常占65%以上。随着装置运行,烯烃在反应器中聚合、结焦,长时间累积会堵塞催化剂孔道,造成催化剂活性下降,床层压差升高,影响产品质量和装置运行,需要停车再生催化剂。分析了再生过程,评价再生结果,为装置后续运行提供理论基础。

关键词: 混合碳四 , 全加氢 , 再生过程 , 分析与评价

Abstract:

Mixed C4 is mainly composed of the acetylene-containing C4 from butadiene extraction plant and MTBE plant and the heavy C4 from light hydrocarbon recovery unit in refinery. This part of C4 components can be used as cracking materials after removing the olefins and alkynes by full hydrogenation. The olefins content of mixed C4 is relatively high, generally accounting for more than 65 mol%. With the operation of the plant, the olefins will be polymerized and coking in the reactor, and then block the pore channel of the catalysts over time, resulting in the decrease of catalyst activity and the increase of bed pressure difference, which will affect the product quality and the operation of the plant. Therefore, the plant has to be shut down for catalyst regeneration. The regeneration process is analyzed, and the regeneration results are evaluated, providing theoretical basis for the subsequent operation of the plant.

Key words: mixed C4, hydrogenation, regeneration process, analysis and evaluation