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收稿日期:
2024-03-29
修回日期:
2024-07-03
出版日期:
2024-07-10
通讯作者:
王增丽
作者简介:
邵明成(1999—),男,硕士研究生,shaomc371518@163.com
基金资助:
Mingcheng SHAO1(), Yugui PAN2, Zengli WANG1(), Qiang ZHAO1
Received:
2024-03-29
Revised:
2024-07-03
Online:
2024-07-10
Contact:
Zengli WANG
摘要:
伴生气增压回注驱油是油气开采中实现碳减排的重要措施,但伴生气主成分为CO2/CH4混合物,组分波动剧烈,且CO2在临界点附近性质极不稳定,这对注气压缩机的稳定性提出了严峻挑战。为厘清CO2/CH4混合物跨临界增压特性,构建了混合物物性PR方程,计算了混合物物性及相态变化规律,明确了安全增压路径。据此构建了CO2/CH4混合物理论跨临界增压热力学模型,得到了混合物跨临界增压过程p-V图、阀片运动规律及指示功率,并对比分析了组分浓度对物性特征及压缩机热力性能的影响机理。研究结果表明:随着CO2浓度升高,饱和气相线向高温区移动,临界温度升高,增压过程中进排气压力损失增大,CO2浓度从20%增加到100%过程中压缩机功耗降低22.93%。相关研究结果可为CO2/CH4混合物跨临界增压压缩机的设计和可靠运行提供理论依据。
中图分类号:
邵明成, 潘玉贵, 王增丽, 赵强. CO2/CH4混合物理论跨临界增压过程的热力性能研究[J]. 化工学报, DOI: 10.11949/0438-1157.20240349.
Mingcheng SHAO, Yugui PAN, Zengli WANG, Qiang ZHAO. Study on the thermal properties of CO2/CH4 mixtures in the theoretical trans-critical pressurization process[J]. CIESC Journal, DOI: 10.11949/0438-1157.20240349.
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