Carbon dioxide compressor (co2 compressor), refers to the compressor used to pressurize and transport carbon dioxide gas.
The carbon dioxide compressor(co2 compressor) pressurizes the carbon dioxide gas through the reciprocating piston movement. After reaching a certain pressure, the pressurized carbon dioxide gas is transported out by the exhaust system.
The small and medium-sized carbon dioxide compressor can recover the CO2 gas volatilized from the dry ice factory or the gaseous CO2 gas after drug extraction, compress and pressurize it, and recover it into the CO2 cylinder to avoid being directly discharged into the atmosphere
It is mainly used in urea synthesis unit. During design and use, attention shall be paid to:
(1) The critical temperature of carbon dioxide is high, and it can be liquefied at 31.3 ℃ and 7.14mpa. When used in winter, the interstage cooling temperature cannot be too low;
(2) When carbon dioxide is below 60MPa, it is conducive to gas compression;
(3) Due to the relatively high density of carbon dioxide gas, it is not suitable to use too large average speed of piston, otherwise the resistance of gas valve is large;
(4)Carbon dioxide gas contains a small amount of water and is highly corrosive, so the gas valve, cooler and buffer tank should be made of stainless steel.
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