液化天然气小常识--杨远锋的博客

液化天然气小常识

[ 2011-1-9 9:48:00 | By: 杨远锋 ]

天然瓦斯 (或称都市瓦斯) 即液化天然气，其英文缩写为 LNG (liquified natural gas)，是远古时代的动植物死亡后，与泥沙等物质依起沈积在海底，经过几百万年的温度、压力及地层的变化与细菌的分解，渐渐伴随石油而形成主要成份为甲烷，一般已管线供应用户。不仅使用上较方便，且着火温度较高，比重又较空气轻，会向上方逸散，不容易集聚成灾，因此安全性较高。
　　LNG 与 LPG 的比较
　　项目 LNG(液化天然气) LPG(液化石油气) 制程天然气经低温冷冻制成原油炼制产品之一主要成分甲烷丙烷(C3)及丁烷(C4)混合温度 -160°C 丙烷(C3):-42°C 丁烷(C4):-4°C 比重 450 kg/m3 579kg/m3 着火点温度 595°C 470°C 安全性较高较低一般计量／价单位热值公吨数输、储设备要求条件、投资金额较高要求条件、投资金额较低使用便利性一般以管线供应用户，较便利一般以桶装供应用户，较不便利。

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原创

[ 2016-9-6 17:19:47 | By: 原创(游客) ]

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原创

[ 2016-9-28 16:53:34 | By: 原创(游客) ]

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原创

[ 2016-9-30 11:30:53 | By: 原创(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-12 10:10:33 | By: gcrvx(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-17 7:09:08 | By: kfxbg(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

[ 2016-10-21 15:51:03 | By: brtwa(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-22 23:44:40 | By: ljbdg(游客) ]

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Re:在漫画中识别身边的违章

[ 2017-2-20 17:26:50 | By: qmdhk(游客) ]

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