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液化气体铁路罐车由于它具有运输能力大、运费低廉,且适用于远程输送的优点,因而在工业生产和人们生活中得到了广泛的应用。液化气体铁路罐车盛装的介质种类较多,且绝大多数都是具有易燃、易爆、有毒等特点的化工原料及产品,一般常遇到的主要有液氨、液氯、液态二氧化硫、液化石油气等。由于这些介质的物理、化学性质各不相同,其清洗、置换的方法及要求也不相同。液化石油气在常温下容易气化,故可采用蒸汽加热的方法,将残留在罐体内的液化石油气清除干
Liquefied gas rail tankers have been widely used in industrial production and people’s lives because of their advantages of large transportation capacity, low freight cost and long-distance transportation. Liquefied gas tanker car contains more types of media, and the vast majority are with flammable, explosive, toxic and other characteristics of chemical raw materials and products are generally encountered mainly liquid ammonia, liquid chlorine, liquid sulfur dioxide, liquefied LPG and so on. Due to the different physical and chemical properties of these media, their cleaning and replacement methods and requirements are not the same. Liquefied petroleum gas easily vaporized at room temperature, it can be used steam heating method, will remain in the tank of liquefied petroleum gas to remove dry