CO_2作天然气地下储气库垫层气的可行性分析

Feasibility Analysis about Carbon Dioxide as Cushion Gas for Natural Gas Storage

用CO2作地下储气库垫层气,可以节省沉积资金,实现碳隔离储存及减少温室效应, 是解决天然气工业发展和火力发电等产生环保问题的一个双赢研究项目。通过研究CO2的热力性质及其来源,提出了CO2作储库垫层气的可行性,确定了CO2作为垫层气的最佳热力学条件,为今后我国碳隔离储存和储气库建设运行提供了理论依据。

Using carbon dioxide as cushion gas for natural gas storage can not only save the deposition capital, but also realize carbon sequestration storage and reduce greenhouse effect. It is a choice that can'hit two hawks with one stone' for the development of natural gas industry and the environment problem as the result of generating electricity by firepower in China. According to the research on reduce the discharge rate of carbon dioxide to atmosphere and the thermo-property of carbon dioxide,this paper gave the feasibility of using carbon dioxide as cushion gas for natural gas storage and the best thermodynamic conditions of using carbon dioxide as cushion gas. Therefore, it provides the theoretic basis for realizing carbon sequestration storage and establishment and running of gas storage in China.