天然气脱硫脱碳单元能耗分析与优化研究
Energy consumption analysis and optimization of the natural gas desulfurization and decarbonization unit
针对天然气净化厂脱硫脱碳单元能耗较高的问题,基于Aspen Hysys软件建立天然气净化厂脱硫脱碳单元流程模拟模型,模型计算误差小于10.22%。通过对甲基二乙醇胺(MDEA)溶液质量分数等参数以湿净化气H2S含量和工艺总能耗为目标函数进行单因素分析优化,优化结果表明,MDEA溶液质量分数为48%,MDEA溶液循环量为70 m3/h,MDEA贫液进入吸收塔温度为31℃,工艺总能耗较优化前下降了461.68 kW。对脱硫脱碳单元进行㶲分析,工艺流程总体㶲效率为15.29%,主要㶲损来源于MDEA再生塔再沸器耗能2 393.39 kW,占脱硫脱碳单元总能耗的61.37%。研究结果对天然气脱硫工艺的节能降耗和技术改进提供指导方向。
Aiming at the problem of high energy consumption in the desulfurization and decarbonization unit of natural gas purification plants,a process simulation model of the unit was established based on Aspen Hysys software,with the model calculation error controlled within 10.22%.Taking the H2S content in wet purified gas and the total process energy consumption as the objective functions,a single-factor analysis and optimization were conducted on parameters such as the MDEA solution concentration.The optimization results show that when the MDEA solution concentration is 48%,the MDEA solution circulation rate is 70 m3/h,and the temperature of the MDEA lean solution entering the absorber is 31℃,the total process energy consumption is reduced by 461.68 kW compared to that before optimization.Furthermore,an exergy analysis was carried out on the desulfurization and decarbonization unit,revealing an overall exergy efficiency of 15.29% for the process.The main exergy loss originates from the reboiler of the MDEA regenerator,which consumes 2393.39 kW,accounting for 61.37% of the total energy consumption of the unit.The research results provide a guiding direction for energy conservation,consumption reduction,and technological improvement of the natural gas desulfurization process.
天然气 / 流程模拟 / 热力学过程 / 优化设计 / 㶲分析
natural gas / process simulation / thermodynamic process / optimization design / exergy analysis
| [1] |
彭天瞳. 高含硫天然气醇胺法脱酸气工艺模拟及参数优化[D]. 西安: 西安石油大学, 2026. |
| [2] |
王靖毓. 基于醇胺法的天然气脱碳与CO2提纯模拟优化研究[D]. 西安: 西安石油大学, 2026. |
| [3] |
贾爱林, 王国亭, 李易隆. 中国天然气开发形势与远景展望[J]. 天然气工业, 2025, 45(5):31-42. |
| [4] |
王丹阳. 高酸性天然气脱硫脱碳装置能耗对比分析[D]. 成都: 西南石油大学, 2020. |
| [5] |
杜昌雄, 侯雅雯, 祝小虎, |
| [6] |
薛家烨, 姚芊羽, 宋瑜淼, |
| [7] |
周新. 天然气脱硫脱碳工艺综述[J]. 化工设计通讯, 2017, 43(3):11,32. |
| [8] |
张生安, 温欣, 陈星, |
| [9] |
肖俊, 高鑫, 熊运涛, |
| [10] |
肖荣鸽, 庄琦, 王栋, |
| [11] |
成庆林, 刘鹤皋, 孟岚, |
| [12] |
王开岳. 天然气脱硫脱碳工艺发展进程的回顾——甲基二乙醇胺现居一支独秀地位[J]. 天然气与石油, 2011, 29(1):15-21. |
| [13] |
肖荣鸽, 庄琦, 王梦霞, |
| [14] |
李奇, 姬忠礼, 段西欢, |
| [15] |
周生懂. 基于Hysys的天然气脱硫工艺模拟分析[J]. 石油工业技术监督, 2025, 41(7):47-51. |
| [16] |
尹晓云, 李静, 林冬, |
| [17] |
昌兴文, 刘统华, 刘欢, |
| [18] |
肖健, 文韵豪, 崔兰德, |
| [19] |
徐建新. 尿素生产低常压回收系统及解吸塔的模拟分析[D]. 天津: 河北工业大学, 2013. |
| [20] |
徐海, 王玲. 化工生产过程中的能耗分析与节能措施研究[J]. 化工管理, 2016(30):159. |
| [21] |
高建, 廖传华, 黄振仁. 化工生产过程中的能耗分析与节能[J]. 节能, 2003(1):27-29. |
| [22] |
冯梁俊, 彭星煜, 蒋炜, |
| [23] |
张扬. 天然气净化厂能量系统优化研究[D]. 北京: 中国石油大学(北京), 2026. |
| [24] |
|
| [25] |
|
| [26] |
蒋沁锟. 基于LNG冷能的精馏型碳捕集流程构建及其性能分析[D]. 杭州: 浙江大学, 2024. |
| [27] |
|
中国石油西南油气田分公司川中油气矿2025年度科技项目计划项目(2025JH-2)
/
| 〈 |
|
〉 |