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What are the requirements for reducing the dew point of the freeze dryer?
There are two traditional methods for the treatment of moisture in the gas source. One is that the adsorbent absorbs the water in the gas source, and the resulting equipment is an adsorption dryer; the other is by lowering the gas temperature to below the dew point temperature. The water in the air is condensed into a liquid and then separated to reduce the water content in the gas source, and the resulting equipment is a freeze dryer. By these two treatment methods, two kinds of processing equipment are produced, and most of the enterprises on the market currently use the freeze dryer therein.
The freeze dryer has a pressure dew point of up to 3 ° C. Generally speaking, it can be understood as the extreme pressure dew point of the freeze dryer. But we often come across the pressure dew point measured by the customer is 20 ° C to 30 ° C, why? How to reduce the dew point of the freeze dryer? It is believed that the manufacturers of freeze dryers have mentioned to the users that the dry compressed air provided is still watery, so it is not suitable for all industries. Many users have blindly used the freeze dryer as a separate drying device for the purpose of saving initial cost. Not only that, but also careless maintenance. As a result, the back end dew point does not reach the rated value. To reduce the dew point of the freeze dryer, it is necessary to meet the optimal operating conditions of the freeze dryer: ambient temperature: the ambient temperature is mainly ventilation, and the air compressor has too much heat generation, so ventilation is very important, otherwise the intake air temperature is high. At 38 ° C, the freeze dryer was overloaded. Inlet pressure: The intake pressure is generally too low or too high. Of course, when selecting this type, most users will notice that the air compressor encounters some conditions that need to be adjusted during operation, which causes the dew point of the freeze dryer to deteriorate. Processing traffic: Similarly, processing traffic is also a problem to consider when selecting a model; to be reminded, generally we need to choose a larger device to cope with some harsh conditions. If the above three points can be satisfied, in fact, the freeze dryer can easily reach the pressure dew point below 10 °C.
