Nitrogen Nitrogen cooling device will generate the high-temperature nitrogen gas fell 0 ~ 30 ℃ or lower temperature devices can be used for coal mine fire prevention, fire fighting, chemical industry, high-temperature high-pressure gas cooling conveyor.
    In the coal mine, general inhibition of nitrogen can not be effectively floating coal gob oxidation, and even there has injected nitrogen Gob spontaneous combustion phenomenon. To do this required the use of nitrogen should have mine lower temperature, low temperature nitrogen gas into the fire zone in the flow range, on the mined-out area has obvious cooling effect, to fire prevention, fire fighting purposes.
    Nitrogen cooling device for the first time the refrigeration technology for underground coal mine single-screw refrigeration equipment, changing the past for the low temperature of liquid nitrogen, nitrogen complex process backward way.