天然气的储存

On Natural Gas's Storage

随着天然气消费量的逐年增加,储存环节的调峰作用与供气的可靠性亦显重要。阐述了天然气的两种储存方式(气态与液态)、建造储存容器的基本准则(安全与经济)和储存容积的确定方法。介绍了气态天然气的地下与地上式储存容器的特点及适用条件。指出液化天然气(UNG)储存容器的材料必须具有较好的低温(—162℃左右)韧性和较小的热膨胀系数,这种容器应具有良好的热绝缘性和周全的安全保护措施,概述了各种LNG储罐的情况,最后对天然气储存容器的建造与发展提出了建议。

The peak shaving function for the links in storage chain and the gas supply reliability become more and more important with the increment of gas consumption year by year. It describes the two storage methods of natural gas (gaseous form and liquid form) ,the basic guidline in tank construction (safety and economy) and the decision method of storage volume;it introduces the features and applicable conditions for underground and/or aboveground tanks in handling the natural gas with gaseous form. It points out that the metal of LNG tank has to provide a low-temperature toughness (around -162℃)and a smaller thermal coefficient of expansion,and this kind of tank should provide a perfect thermal insulation and thorough protective measures. The paper describes all kinds of LNG tanks and puts forward some suggestions for the construction and development of these tanks.