Importance of Water Chiller in the Operation of Air Separation Unit
Refrigeration unit is an indispensable key equipment for large air separation unit,which can reduce the air temperature at the outlet of the air cooling tower and ensure the adsorption effect of the purifier.When the water chiller suddenly fails,the air temperature rises,the adsorption load of the purifier increases,and the processing time is too long,it will cause the serious consequences such as breakdown of molecular sieve bed in the purifier,unqualified air entering the cold box and forced shutdown and return temperature of the frozen plate heat exchanger.Through the accident analysis and theoretical calculation of a water chiller,the time of adsorption and saturation of water and carbon dioxide in the purifier under the accident condition is calculated.Finally,it is concluded that the importance of refrigeration unit to the long cycle operation of air separation unit and the necessity of adding standby unit.
air separation unitrefrigeration unitfault handlingtheoretical calculationlong period operation
万方数据
维普
