CIESC Journal ›› 2021, Vol. 72 ›› Issue (3): 1473-1479.DOI: 10.11949/0438-1157.20201877

• Process system engineering • Previous Articles     Next Articles

Simulation and retrofit of desulfurization system in refinery

LI Zhendong1(),YANG Minbo1(),FENG Xiao1,WANG Yufei2   

  1. 1.School of Chemical Engineering & Technology, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
    2.State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
  • Received:2020-12-15 Revised:2020-12-21 Online:2021-03-05 Published:2021-03-05
  • Contact: YANG Minbo

炼厂脱硫系统的模拟和改造

李振东1(),杨敏博1(),冯霄1,王彧斐2   

  1. 1.西安交通大学化学工程与技术学院,陕西 西安 710049
    2.中国石油大学(北京)重质油国家重点实验室,北京 102249
  • 通讯作者: 杨敏博
  • 作者简介:李振东(1996—),男,硕士研究生,zhendonglixjtu@163.com
  • 基金资助:
    中国博士后科学基金项目(2019M663732)

Abstract:

With the trend of processing sulfur-containing crude oil, the circulation of desulfurization solvent is increasing in refineries, which raises the energy consumption for solvent regeneration dramatically. In this paper, Aspen HYSYS is used to simulate a group of desulfurization units, and the minimum desulfurization solvent circulation of each unit is obtained. On this basis, two retrofitting methods, cascaded operation and cascaded-parallel operation, are put forward and used to retrofit the desulfurization system. The results show that the desulfurization solvent circulation can be reduced by 8.82% and 10.01% through the two methods, respectively, and have achieved good economic benefits. Finally, the advantages and disadvantages of the two methods are analyzed and discussed, which provides directions and suggestions for the optimization of refinery desulfurization system.

Key words: desulfurization system, simulation, retrofit, economic, systems engineering

摘要:

随着世界原油含硫化,炼厂脱硫溶剂的循环量不断增加,导致溶剂再生部分能耗剧增。使用Aspen HYSYS对一组脱硫单元进行了模拟,得出该脱硫系统最小的脱硫溶剂循环量。在此基础上,提出了串联操作和串并联操作两种改造方法,并分别使用这两种方法对现行的脱硫系统进行了改造。结果表明,两种改造方法可以使贫胺液的循环量分别减少8.82%和10.01%,取得了良好的经济效益。最后,分析和讨论这两种方法的优缺点,为炼厂脱硫系统的优化提供方向和建议。

关键词: 脱硫系统, 模拟, 改造, 经济, 系统工程

CLC Number: