Causes of dew point rise of product gas caused by low pressure of compressed air

The correct use of the freeze dryer is an important prerequisite for obtaining the required dew point compressed air, saving the energy consumption of regeneration and prolonging the service life of the equipment The cylinder of the freeze dryer is generally a pressure vessel, which shall be managed and used strictly according to the relevant regulations of the pressure vessel during the service period of the equipment According to the standard, the temperature of the air entering the normal temperature type air dryer should be below 45 ℃ In view of the fact that the exhaust temperature of the existing air compressor is difficult to reach this standard (especially in the high temperature season or under the bad ventilation conditions), it is necessary to set the rear cooler in front of the air dryer or select the high temperature type air dryer Under the rated operating conditions, the temperature and pressure of the gas burst have a great influence on the use effect of the cold dryer The negative impact of low pressure of compressed air on the dryer is reflected in two aspects: on the one hand, the saturated water content of low-pressure air is more than that of high-pressure air, which increases the working load of the dryer; on the other hand, due to the decrease of density, the actual flow of compressed air through the dryer increases, which is equal to the increase of the processing capacity of the dryer, which leads to the rise of dew point of the product gas Like all mechanical and power equipment, it is reasonable to control the actual capacity of the freeze dryer within 70% - 80% of the rated capacity It is uneconomical for refrigerated dryer to operate under low load for a long time, because it will increase energy consumption cost In addition to the feasible energy-saving measures for the cold dryer itself, when the system is designed, the parallel use of two or more small capacity cold dryers is more suitable for load dispatching than the single large capacity cold dryers, and the air intake temperature is higher and higher due to the higher technical economy and safety guarantee The saturated water content in the gas increases The compressed air dryer produced by ouliya company saves more than 30% of the conventional power, double its service life and more thorough water removal effect All parts of the whole machine are equipped with original Panasonic compressor.