Transport of liquid ammonia (from storage tanks to the plant)
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Could anyone provide some guidance on handshake? Thank you!
Is liquid ammonia needed or gas ammonia? If liquid ammonia is required, pumping can be used, although the requirements for pumps are quite strict (to prevent air erosion) ； If gaseous ammonia is used, it can be used directly after being vaporized by a vaporizer.
Is the area where liquid nitrogen is used under pressure? If not, the pressure from the liquid nitrogen tower can be used to apply pressure automatically through insulated pipes. Insulation with polyurethane foam in pipes, equipped with safety valves
A pump or a compressor can be used; a sliding vane pump is recommended for this purpose, as the vaporization of liquid ammonia is quite severe. Other pumps either cannot handle gas-liquid mixtures or offer poor cost-performance ratios； If a compressor is used, reciprocating types are commonly employed (I’ve heard that screw types are also used as well, but I’ve never purchased one). With a pump, the liquid phase at two points is connected; with a compressor, the gas phase at two points is connected.
It depends on what you intend to do with the liquid ammonia and what its purpose is. If ammonia is used for cooling, only an ammonia compressor is needed to recover the gaseous ammonia in the system, compress it, and cool it down to a liquid state. Hydraulic pressure can be delivered to the equipment area through the pressure in its own storage tank.
As long as the user applies a pressure lower than that of the ammonia tank, the pressure from the ammonia tank can be used directly