| 摘要 |
<p>A stream 12 of liquid nitrogen is withdrawn at a controlled pressure from a storage tank 16 and a stream 10 of liquid oxygen is withdrawn from a storage tank 14. The two streams are passed cocurrently through a heat exchanger 20. The liquid oxygen is sub-cooled and the liquid nitrogen partially vaporised by indirect heat exchange therebetween within the heat exchanger 20. The resulting partially vaporised liquid nitrogen is separated into a liquid phase and a vapour phase within a phase separator 32. A stream of the liquid phase is withdrawn from the phase separator 32 and is mixed with the sub-cooled liquid oxygen, preferably in a mixing tee 38. <IMAGE></p> |
