CIESC Journal ›› 2021, Vol. 72 ›› Issue (S1): 413-420.DOI: 10.11949/0438-1157.20200441

• Separation engineering • Previous Articles     Next Articles

Aspen Plus simulation on selective separation of high concentration acid gas of H2S and CO2

GAO Shuaitao1(),LIU Xueke1,ZHANG Li1,LIU Fen1,YU Jiang1(),SHANG Jianfeng2,OU Tianxiong2,ZHOU Zheng3,CHEN Pingwen3   

  1. 1.Research Group of Environmental Catalysis & Separation Process, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
    2.Natural Gas Technology Management Department of Puguang Branch of Sinopec, Dazhou 635000, Sichuan, China
    3.Natural Gas Treatment Plant of Zhongyuan Oilfield Branch of Sinopec, Puyang 457000, Henan, China
  • Received:2020-04-29 Revised:2020-10-06 Online:2021-06-20 Published:2021-06-20
  • Contact: YU Jiang

Aspen Plus模拟高浓度H2S/CO2酸性气的选择性分离

高帅涛1(),刘雪珂1,张丽1,刘芬1,余江1(),商剑锋2,欧天雄2,周政3,陈平文3   

  1. 1.北京化工大学化学工程学院,能源环境催化北京市重点试验室环境催化与分离过程研究组,北京 100029
    2.中国石油化工有限公司普光分公司天然气技术管理部,四川 达州 635000
    3.中国石油化工有限公司中原油田分公司天然气处理厂,河南 濮阳 457000
  • 通讯作者: 余江
  • 作者简介:高帅涛(1994—),男,硕士研究生,2017310010@buct.edu.cn
  • 基金资助:
    国家科技部“十三五”重大专项项目(2016ZX05017-004)

Abstract:

In this paper, polyethylene glycol dimethyl ether (NHD) was used as absorbent to treat the tail gas with high concentration of H2S and CO2 from the coal to hydrogen process. The solubility parameters of H2S and CO2 in NHD were fitted with the PC-SAFT equation of state. A two-stage absorptive separation process was built with the application of Aspen Plus process simulation software to realize the high effective separation of H2S and CO2. The results show that the concentration of the separated H2S and CO2 could be reached from 30% to 98.7% and 55% to 99.4%, respectively. Hence, the acid gas pollution control can be done by high efficient separation of H2S and CO2 to get high single concentration for reuse and resource.

Key words: carbon dioxide, hydrogen sulfide, absorption separation, Aspen simulation, polyethylene glycol dimethyl ether

摘要:

以煤制氢尾气中的高浓度酸性气体H2S和CO2为对象,以聚乙二醇二甲醚(NHD)为吸收剂,使用PC-SAFT状态方程拟合了酸性气体CO2和H2S在聚乙二醇二甲醚(NHD)溶剂中溶解参数,运用Aspen Plus流程模拟软件,构建两级吸收分离工艺,实现H2S和CO2的高效分离,H2S浓度由30%提升至98.7%,CO2含量由55%提升至99.4%。由此,可以通过高效分离酸性气H2S和CO2,并以提浓后再资源化利用的方式实现酸性气的污染控制。

关键词: 二氧化碳, 硫化氢, 吸收分离, Aspen模拟, 聚乙二醇二甲醚

CLC Number: