·This skid mounted nitrogen pumper is mainly used for assisting the hydraulic fracturing spread to mix, inject and make the liquid nitrogen fracture. The skid with the independent liquid pump and the vaporization system is equipped with liquid nitrogen tank, high pressure triplex pump, heat recovery vaporize system .

·Liquid nitrogen pump and vaporization system completely adopt the heat recovery system of indirectly burnt diesel engine to vaporize liquid nitrogen. All the heat for vaporizing the liquid nitrogen is acquired from the power of driving the engine. The exhaust-heat of the engine and other systems are all transformed into the useful heat for vaporizing liquid nitrogen.

·The system mainly includes diesel power unit, reciprocating triplex liquid nitrogen pump, centrifugal irrigating pump, liquid nitrogen evaporator and various operation control
switches.

·In normal operating conditions, liquid nitrogen flows into the triplex pump from the storage tank through centrifugal irrigating pump and is pressurized to the working pressure by the reciprocating pistons, then, the high pressure liquid nitrogen flows into the evaporator and absorbs enough heat from the power unit to become high pressure gas. While the temperature of the gas reaches 60F-70F(15℃-21℃), it will discharge through discharge valve at the flow rate of 360,000 SCFH.

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