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bao he qian shui zhong hai qi hui shou ji shu
Author(s): 
Pages: 49-52
Year: Issue:  4
Journal: Ocean Technology

Keyword:  饱和潜水回收技术膜式压缩机氦气回收天然气低压容器氦氮氧回收装置储气罐高压容器;
Abstract: <正> 一、前言氦气是一种无色无味的惰性气体,化学符号He,分子量为4,比氢气重,比空气轻得多,在大气中含量极少,大约只有0.01%游离的氦。在我国富产天然气的四川,其天然气中的含量为0.2%,由于我国氦气资源较少,因此价格昂贵,每立方米为200~250元人民币。氦气不但在超导及国防工业上用途较广,在饱和潜水、科研等方面也大量应用。我院这
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