A new type of condenser-evaporator safely operated in large air separation plant

摘要

A new condenser-evaporator for 30000 m~3/hr air separation plant is developed. Its heat transfer coefficient is increased by 50%. Both its volume and weight are reduced by 1/3 compared with the traditional one. Its total temperature difference for heat transfer is only 0.57K. According to the theoretical analysis, the flow velocity of oxygen gas is increased to 6.74m/s. Thus the oxygen gas could carry the heaviest particles of N_2O of 0.4mm in diameter out of the flow channel in comparison with the traditional products in which the particles of greater than 0.2mm in diameter could not be carried away from the channel.