4, use at refrigeration and aeriform depart
Gas is compressed through pneumatics machine, cooling, expand and liquefacient, use at artificial refrigeration. This kind of compressor calls ice machine or glacial machine normally. Below the circumstance that liquid gas is blender, can depart from inside separate unit each groups, acquire all sorts of gas of eligible purity, be like the depart of oil resolver, compress first, depart below different temperature next each groups.