Sulfinol-X desulfurization process for deep removal of organic sulfur from high-sulfur natural gas

被引：0
|
作者：
Ma M. [1 ]
Lyu Y. [2 ]
Wan S. [1 ]
Liu Z. [1 ]
机构：
[1] Northeast Sichuan Operation Branch, PetroChina Southwest Oil & Gasfield Company, Chengdu
[2] Natural Gas Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu
来源：
Natural Gas Industry | 2021年 / 41卷 / 10期
关键词：
Deep removal; High sulfur content; Natural gas; Organic sulfur; Piperazine; Proprietary formulation; Sulfinol-X desulfurization process;
D O I：
10.3787/j.issn.1000-0976.2021.10.014
中图分类号：
学科分类号：
摘要：
Deep removal of organic sulfur from high-sulfur natural gas is a severe challenge to high-sulfur natural gas purification plants as the state requires for higher quality of natural gas entering into long-distance transmission pipelines. To investigate the quality upgrading of product gas and meet related national standards, Sulfinol-X desulfurization process was applied in a certain domestic high-sulfur natural gas purification plant. The influence of piperazine concentration in Sulfinol-X desulfurization solution on commercial gas quality, flash gas composition, acid gas composition and tail gas SO2 emission concentration was evaluated. Sulfinol-X desulfurization solution efficiently removed sulfocompounds, i.e., H2S, COS, mercaptan and CS2 from natural gas, to meet the requirement that the total sulfur content of commercial natural gas shall not be higher than 20 mg/m3. Sulfinol-X solution was not CO2 selective, as it removes CO2 completely in the process of deep organic sulfur removal. Sulfinol-X solution reduced CO2 content and total sulfur content of flash gas, to significantly improve the quality of flash gas. When Sulfinol-X desulfurization process and standard SCOT tail gas treatment process were applied in a high-sulfur natural gas purification plant, the SO2 emission concentration of tail gas was not higher than 400 mg/m3, satisfying the latest environmental requirements.
引用
收藏
页码：127 / 132
页数：5
相关论文
共 19 条
  • [1] Natural gas: GB 17820-2018, (2018)
  • [2] Quality requirements for gases entering long-distance transportation gas pipeline: GB/T 37124-2018, (2018)
  • [3] YANG Chaoyue, CHANG Honggang, HE Jinlong, Et al., Discussion on the purification process of natural gas based on GB 17820-2018, Chemical Engineering of Oil & Gas, 48, 1, pp. 1-6, (2019)
  • [4] CAI Li, ZHOU Daibing, XIE Yu, Et al., An explanation of new national standard Quality Requirements for Gases Entering Long-distance Transportation Gas Pipeline, Chemical Engineering of Oil & Gas, 48, 2, pp. 95-98, (2019)
  • [5] LI Yan, CAI Li, WU Hai, Et al., Influence of GB 17820 on the preparation of sulfur compounds reference gas, Chemical Engineering of Oil & Gas, 48, 6, pp. 88-92, (2019)
  • [6] LIANG Ping, LU Haidong, ZHANG Zhe, Et al., Process scheme study on the realization of GB 17820-2018 standardization in a natural gas purification plant of Changqing Oilfield, Chemical Engineering of Oil & Gas, 49, 1, pp. 1-7, (2020)
  • [7] ZHANG Qian, LU Haidong, ZHANG Bibo, Et al., Discussion on tail gas SO<sub>2</sub> emission reduction measures of a high-sulfur natural gas purification plant, Chemical Engineering of Oil & Gas, 49, 1, pp. 8-13, (2020)
  • [8] LIU Ke, WANG Xianglin, YUAN Qinghong, Et al., Research on desulfurization and decarbonization process of highly sour natural gas, Chemical Engineering of Oil & Gas, 49, 1, pp. 14-20, (2020)
  • [9] ZHAO Guoxing, ZHU Wenzhao, YANG Wei, Removal of mercaptan from natural gas by molecular sieve, Chemical Engineering of Oil & Gas, 49, 4, pp. 1-7, (2020)
  • [10] LIU Zongshe, LI Jinjin, CHEN Changjie, Et al., Study on fixed bed conversion catalyst for organic sulfur in natural gas, Chemical Engineering of Oil & Gas, 49, 4, pp. 14-21, (2020)
12