隔壁精馏塔分离天然气中杂质模拟
Simulation for impurity separation in natural gas using dividing wall column technology
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- 引用格式:
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刘祎飞,胡玲,高鑫,张庆宇,韩淑怡,刘文亮,张津,刘辉,陈运强.隔壁精馏塔分离天然气中杂质模拟[J].天然气与石油,2026,44(3):12-17.doi:10.3969/j.issn.1006-5539.2026.03.002
Liu Yifei, Hu Ling, Gao Xin, Zhang Qingyu, Han Shuyi, Liu Wenliang, Zhang Jin, Liu Hui, Chen Yunqiang.Simulation for impurity separation in natural gas using dividing wall column technology[J].Natural Gas and Oil,2026,44(3):12-17.doi:10.3969/j.issn.1006-5539.2026.03.002
- DOI:
- 10.3969/j.issn.1006-5539.2026.03.002
- 作者:
- 刘祎飞1 胡玲1 高鑫1 张庆宇2 韩淑怡1 刘文亮1 张津1 刘辉2 陈运强1
Liu Yifei1, Hu Ling1, Gao Xin1, Zhang Qingyu2, Han Shuyi1, Liu Wenliang1, Zhang Jin1, Liu Hui2, Chen Yunqiang1
- 作者单位:
- 1. 中国石油工程建设有限公司西南分公司, 四川 成都 610041; 2. 天津大学化工学院, 天津 30007
1. CPECC Southwest Company, Chengdu, Sichuan, 610041, China; 2. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- 关键词:
- 天然气;隔壁精馏塔;气液分配比;能耗;总年度成本
Natural gas; Dividing wall column; Vapor-liquid split ratio; Energy consumption; Total annual cost
- 摘要:
- 天然气是重要的优质清洁能源。隔壁精馏塔可脱除天然气中的杂质,且能耗小、分离效能突出,能够兼顾经济效益与社会效益,对行业及社会发展具有重要现实意义。深入探讨了隔壁精馏塔技术在天然气处理中的应用,利用Aspen Plus软件,结合其中的PSRK物性模型和RadFrac模块,构建了四塔模型进行模拟分析。通过模拟分析不同CO2侧采位置与气液相分配,优化处理了CO2质量分数、再沸器能耗和冷凝器能耗,从而确定隔壁精馏塔最佳操作参数。对整个设备的投资成本进行了全面估算,通过调整气相分配比成功降低了总年度成本,为天然气提纯工艺提供了更经济可行的解决方案。
Natural gas is an important high-quality clean energy source. Dividing wall columns effectively remove impurities from natural gas with low energy consumption and excellent separation performance, balancing economic and social benefits. This technology holds significant practical value for both industry and societal development. This paper presents an in-depth study on the application of dividing wall column technology in natural gas treatment. A four-column simulation model was constructed in Aspen Plus using the PSRK thermodynamic property method and the RadFrac rigorous distillation module. The effects of different CO2 side-draw locations and vapor-liquid split ratios were analyzed. Based on simulation results, the CO2 mass fraction and the energy consumption of reboilers and condensers were optimized to determine the optimal operating parameters of the dividing wall column. A comprehensive capital cost estimation of the entire facility was also conducted. By adjusting the vapor split ratio, the total annual cost was significantly reduced, providing a more economical and feasible technical solution for natural gas purification.
