欢迎访问过程工程学报, 今天是

过程工程学报 ›› 2018, Vol. 18 ›› Issue (4): 879-885.DOI: 10.12034/j.issn.1009-606X.218136

• 环境与能源 • 上一篇    下一篇

耦合酸气提浓的脱硫脱碳工艺

刘慧敏1,诸林2,郁辰阳3,曹文浩1,陈建良1   

  1. 1. 西南石油大学化学化工学院，四川成都 610500
    2. 中国石油工程建设北京分公司，北京 100089
    3. 中国石油工程建设西南分公司，四川成都 61004
  • 收稿日期:2018-02-06 修回日期:2018-04-16 出版日期:2018-08-22 发布日期:2018-08-15
  • 通讯作者: 刘慧敏 liuhuimin@cnpc.com.cn

Desulfuration and decarbonization coupling acid gas enrichment process

Huimin LIU1*, Lin ZHU1, Chenyang YU2, Wenhao CAO3, Jianliang CHEN3   

  1. 1. School of Chemical and Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
    2. China Petroleum Engineering & Construction Beijing Company, Beijing 100089, China
    3. China Petroleum Engineering & Construction Southwest Company, Chengdu, Sichuan 610041, China
  • Received:2018-02-06 Revised:2018-04-16 Online:2018-08-22 Published:2018-08-15

PDF

摘要： 针对高碳硫比的酸性天然气的净化，提出了一种耦合酸气提浓的脱硫脱碳新工艺. 以某高碳硫比原料气为例，采用PROMAX和AMSIM模拟软件进行工艺模拟和参数分析. 结果表明，二级闪蒸压力为300 kPa、闪蒸温度为118℃时，闪蒸气量和二次吸收塔顶的尾气量均较大，再生后的酸气浓度较高，能耗比常规工艺低. 该工艺在满足产品质量要求的同时能将再生后的酸气浓度由20.65vol%提升至30.16vol%，提高了天然气处理单元操作的稳定性，降低了一次性投资和操作运行成本.

关键词: 碳硫比, 脱硫脱碳, 酸气提浓, 二级闪蒸, 二次吸收, 节能降耗

Abstract: Desulfuration and decarburization coupling acid gas enrichment was posed an advancing and promising process for sour natural gas with high carbon/sulfur ratio. Though an example of high carbon/sulfur ratio sour natural gas, the PROMAX and AMISIM were used to simulate the process and analyze the parameters. The results showed that the flow rate of flash gas, tail gas from 2nd absorber and the H2S concentration of acid gas was higher and the energy consumption was lower than traditional process at the flash pressure of 300 kPa and the temperature of 118℃. Also, the new process not only was satisfied with the specification of sales gas but also enriched the H2S concentration of acid gas from 20.65vol% to 30.16vol%, which can enhance the stability operation, decrease the investment and the operating cost.

Key words: Carbon-sulfur ratio, Desulfuration &, Decarbonization, Acid gas enrichment, The 2nd stage flash, The 2nd stage absorption, Energy efficiency