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液化石油气(以下简称液化气)是以丙烷、丙烯、丁烷、丁烯等低炭氢化合物为主要成份的混合物,通常以液态形式在密闭容器中储存。液化气是易燃易爆物质,其主要特性如下: (1)当采用常温压力储存时,其容器内的液化气饱和蒸气压随环境温度的升高而增加。例如:丙烷在O℃时,其饱和蒸气压为4.66Kgf/cm~2(457kPa);+40℃时为13.82Kgf/cm~2(1355.28kPa)。 (2)液态液化气的体积膨胀系数比水大十倍以上。例如:液态丙烷的体积膨胀系数为0.0025～0.0045,当液态丙烷温度从
Liquefied petroleum gas (hereinafter referred to as liquefied gas) is a mixture mainly composed of low-hydrocarbon compounds such as propane, propylene, butane, butylene, and is usually stored in a closed container in a liquid state. Liquefied petroleum gas is flammable and explosive material, its main characteristics are as follows: (1) When the pressure is stored at room temperature, the saturated vapor pressure of liquefied gas in the container increases with the increase of ambient temperature. For example, when propane is at O°C, its saturated vapor pressure is 4.66 Kgf/cm 2 (457 kPa); at +40°C, it is 13.82 Kgf/cm 2 (1355.28 kPa). (2) The volumetric expansion coefficient of liquid liquefied gas is more than ten times larger than that of water. For example: The volume expansion coefficient of liquid propane is 0.0025 to 0.0045 when the temperature of liquid propane is from