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化学危险品由于具有易燃易爆的特点,因此在接卸及仓储过程中,需要与空气隔绝。而使用惰性气体进行管线吹扫及罐体上部空间置换是较好的方法,氮气是惰性气体,且具有易制取,经济方便的优点,故广泛地应用于危险品仓储行业。通常氮气的供给方工有4种:1.使用液氮经气化后供给。2.使用瓶装氮气。3.使用现场深冷空分法制氮。4.使用变压吸附法制氮。使用前两种方法,具有简单方便的优点,但使用成本很高。深冷空分法的设备投资额大,能耗
Because of the characteristics of inflammable and explosive chemical dangerous goods, so in the process of unloading and storage, need to be isolated from the air. The use of inert gas for pipeline cleaning and tank top space replacement is a better method, nitrogen is inert gas, and has easy preparation, economical and convenient advantages, it is widely used in hazardous materials storage industry. Nitrogen gas supply workers are usually four kinds: 1. The use of liquid nitrogen after gasification supply. 2. Use bottled nitrogen. 3. The use of site cryogenic air separation nitrogen. 4. The use of pressure swing adsorption nitrogen. The first two methods, with the advantages of simple and convenient, but the use of high cost. Cryogenic airspace separation equipment investment, energy consumption