CO_2管内节流实验装置设计及实验研究  

Research on design and experiment of CO_2 in-pipe throttling experimental device

作　　者：胡其会[1,2] 滕霖[1,2] 王财林 张大同 叶晓[1,2] 顾帅威[1,2] 李玉星 Hu Qihui;Teng Lin;Wang Cailin;Zhang Datong;Ye Xiao;Gu Shuaiwei;Li Yuxing(College of Storage, Transportation and Architectural Engineering, China University of Petroleum Qingdao 266580, China;Shandong Provincial Key Laboratory of Oil and Gas Storage and Transportation Safety, China University of Petroleum, Qingdao 266580, China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [2]中国石油大学(华东)山东省油气储运安全省级重点实验室,山东青岛266580

出　　处：《实验技术与管理》2018年第5期84-88,共5页Experimental Technology and Management

基　　金：国家自然基金项目(51374231);国家科技重大专项(2016ZX05016-002);中央高校基本科研业务费专项资金项目(16CX06005A)

摘　　要：设计了一套高压CO_2管内节流实验装置,能够将气态CO_2加压稳定至不同相态。节流过程中可以对实验环道不同位置处的压力、温度参数进行实时数据记录。实验研究分析了气态和超临界态CO_2节流过程中管内压力、温度的变化规律。实验结果表明,不同相态下的管内节流压降、温降规律不同,气态CO_2的节流效应明显强于超临界CO_2,在节流过程更容易使游离水结冰,从而出现冻堵现象;超临界CO_2节流后会发生相变,出现气液两相流动。实验结果对CO_2管道节流安全控制和管道冻堵防治具有借鉴意义。A set of high pressure CO2 in-pipe throttling experimental device is designed,which can pressurize and stabilize the gaseous CO2 to the different phase states.In the process of throttling,the real time data record of the pressure and temperature parameters at different locations of the experimental loop can be carried out.The variation of the in-pipe pressure and temperature during the CO2 throttling process of gaseous and supercritical states is experimentally studied.The experimental results show that the in-pipe pressure drop and temperature drop under different phases are different,and the throttling effect of the gaseous CO2 is stronger than that of the supercritical CO2,which is easier to freeze the free water in the throttling process.Thus,the phenomenon of the freezing blockage appears.The phase transition happens after the supercritical CO2 throttling,and the gas-liquid two phase flow occurs.The experimental results have guiding significance for the safe control of CO2 pipeline throttling and for the prevention and control of pipeline freezing blockage.

关 键 词：CO2管道 C捕集及埋存 管内节流 实验装置 

分 类 号：TE832[石油与天然气工程—油气储运工程]