石油化工高等学校学报 ›› 2025, Vol. 38 ›› Issue (4): 18-24.DOI: 10.12422/j.issn.1006-396X.2025.04.003

• 石油化工 • 上一篇    下一篇

炼厂气体分馏流程的模拟优化

赵丹1(), 王彦娟1, 潘显良2, 张健1(), 叶昊天3   

  1. 1.辽宁石油化工大学 石油化工学院,辽宁 抚顺 113001
    2.中国石油辽河石化分公司,辽宁 盘锦 124000
    3.大连理工大学 化工学院,辽宁 大连 116033
  • 收稿日期:2024-12-12 修回日期:2025-01-25 出版日期:2025-08-25 发布日期:2025-07-24
  • 通讯作者: 张健
  • 作者简介:赵丹(2001⁃),女,硕士研究生,从事流程模拟与优化方面的研究;E⁃mail:2042155900@qq.com
  • 基金资助:
    教育部产学合作协同育人项目(221004650123048)

Simulation and Optimization of Gas Fractionation Process in Refinery

Dan ZHAO1(), Yanjuan WANG1, Xianliang PAN2, Jian ZHANG1(), Haotian YE3   

  1. 1.School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
    2.PetroChina Liaohe Petrochemical Company,Panjin Liaoning 124000,China
    3.School of Chemical Engineering,Dalian University of Technology,Dalian Liaoning 116033,China
  • Received:2024-12-12 Revised:2025-01-25 Published:2025-08-25 Online:2025-07-24
  • Contact: Jian ZHANG

摘要:

针对炼厂气体三塔分馏工艺中脱丙烷塔蒸汽消耗量较大的问题,提出使用高低压双塔脱丙烷工艺代替原流程中的单塔脱丙烷工艺。利用Unisim Design流程模拟软件对该工艺进行稳态模拟,分析了高压脱丙烷塔的蒸汽热负荷变化与脱乙烷塔的热水热负荷变化,并优化了主要操作参数。结果表明,在高压脱丙烷塔的n(塔顶C3采出量)/n(进料C3总量)=0.6、塔顶压力为1.81 MPa、进料位置为第10块塔板,且脱乙烷塔塔底与低压脱丙烷塔塔顶进入丙烯精馏塔的进料位置分别为第114、126块塔板的操作条件下,与原流程相比,使用高低压双塔脱丙烷工艺可以节约56.12%的蒸汽热负荷,脱乙烷塔比优化前节约了49.83%的热水热负荷,总耗能减少了235.4 kW,每小时可节省热公用工程费用约339.71元。

关键词: 气体分馏, 高低压双塔分离, 节能降耗, 优化设计, 流程模拟

Abstract:

To address the issue of high steam consumption in the propane removal tower of the three tower gas fractionation process in refineries, it is proposed to use a high and low pressure dual tower propane removal process instead of the single tower propane removal process in the original process. The process was simulated under steady?state conditions using Unisim Design process simulation software. The steam load of the high?pressure depropanizer and the hot water load of the deethanizer were analyzed, and the main operating parameters were optimized. The results showed that under the operating conditions of n(top C3 production)/n(total feed C3)=0.6, top pressure of 1.81 MPa, feed tray position of the 10th plate, and feed positions of the 114th and 126th plates at the top of the propane removal tower and low?pressure propane removal tower respectively, using the high and low?pressure double tower propane removal process can save 56.12% of steam load compared to the original process, save 49.83% of hot water load in the ethane removal tower compared to before optimization, reduce total energy consumption by 235.4 kW, and save about 339.71 yuan in thermal utility costs per hour.

Key words: Gas fractionation, Separation of high and low pressure twin towers, Energy conservation and consumption reduction, Optimize the design, Process simulation

中图分类号: 

引用本文

赵丹, 王彦娟, 潘显良, 张健, 叶昊天. 炼厂气体分馏流程的模拟优化[J]. 石油化工高等学校学报, 2025, 38(4): 18-24.

Dan ZHAO, Yanjuan WANG, Xianliang PAN, Jian ZHANG, Haotian YE. Simulation and Optimization of Gas Fractionation Process in Refinery[J]. Journal of Petrochemical Universities, 2025, 38(4): 18-24.

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