摘要
往复压缩机多组分混合气体注气增压过程中,级间冷却发生的介质凝析对压缩机的运行效率和可靠性影响极大。为了揭示多组分混合气体的增压机理及多级增压级间冷却过程介质凝析特性,基于变质量系统热力学基本原理及实际气体状态参数方程,构建了混合气体增压、冷却过程数值计算模型,得到了各组分的多级增压过程压力曲线;在此基础上,研究了混合气体增压过程级间冷却凝析特性和确保不发生凝析的最适级间冷却温度。研究结果表明:混合气体注气增压过程中,水蒸气更易发生凝析,且不同压比工况下,压比为2∶4∶8∶25时,水蒸气和二氧化碳的凝析量最小;随着压缩机级数的增加,最适级间冷却温度逐渐升高;水蒸气的最适级间冷却温度恒大于二氧化碳。
The medium condensation during interstage cooling has a significant impact on the operational efficiency and reliability of the compressor during the process of multi-component gas injection pressurization in reciprocating compressors.In order to reveal the pressurization mechanism of multi-component mixed gas and the condensate characteristics of the medium in the multi-stage pressurization interstage cooling process,based on the basic principles of variable mass system thermodynamics and the parametric equation of real gas state,a numerical calculation model for the pressurization and cooling process of mixed gas was constructed,and the pressure curves of each component in the multi-stage pressurization process were obtained.On this basis,the characteristics of interstage cooling condensation during mixed gas pressurization process and the optimal interstage cooling temperature to ensure that condensation does not occur were studied.The research results indicate that water vapor is more prone to condensation during the process of mixed gas injection pressurization,and the condensation amount of water vapor and carbon dioxide is the smallest under different pressure ratio conditions and the pressure ratio is 2:4:8:25.As the number of compressor stages increases,the optimal interstage cooling temperature gradually increases.The optimal interstage cooling temperature of water vapor is always greater than that of carbon dioxide.
作者
代泽宇
邵华
王增丽
肖刚
DAI Ze-yu;SHAO Hua;WANG Zeng-li;XIAO Gang(College of New Energy,China University of Petroleum(East China),Qingdao 266580,China;Gas Injection Technology Service Center,Shengli Oil Field Branch,Dongying 257000,China)
出处
《压缩机技术》
2023年第4期16-23,共8页
Compressor Technology
基金
压缩机技术国家重点实验室(压缩机技术安徽省实验室)开发(SKL-YSJ202005)。
关键词
混合气体
增压机理
凝析特性
级间冷却温度
mixed gas
pressurization mechanism
condensate characteristics
interstage cooling temperature
作者简介
代泽宇(2000-),男,硕士,主要研究方向为容积式泵和压缩机。E-mail:wangzengli25@upc.edu.cn。
