替代气垫技术在盐穴储气中的应用

The Discussion of Practical Use of Alternative Cushion Gas in Salt CavityStorage

阐述了替代气垫技术的基本原理,分析了替代气垫技术在实际应用中的选材、实施、工艺、故障防护等问题,例举了替代气垫技术相对于传统技术在经济和工程方面的优点。对比分析结果表明,如果将替代气垫技术的进一步研究成果早日应用于我国的盐穴储气库中,可以达到节省工程投资、方便储气库运营管理的目的。

Designing and developing more underground salt cavity storage projects are one of the trends of the natural gas storage in 21 century. Because the present technology is that 40% to 50% of total amount of gas stored must stay in the cavity to provide the pressure necessary to deliver the rest,which will result in more cost and the increasing of difficulty and complexity in operation. However the alternative cushion gas technology can overcome the shortcomings of the older technology. In this article, firstly the theory of the new technology are described,then the practical use of alternative cushion gas in salt cavity storage specially, such as selection of materials, and practicing the technology, and technology process and study of failsafe requirements,are discussed. At last,the advantages of the new technology in contrast of the older one in technology and engineering aspects are illustrated. By contrasting and analysis,the paper considered that it is very necessary to develop more study in the technology,if this technology put into application in China as soon as possible,it will reduce the project cost and convenient to the operation of the salt cavity storage.