What's the difference between a hot air dryer and a temperature removing dryer?
Dew point temperature (Dew point) is the temperature at which a gas cools to the moisture it contains. It is a unit for measuring the dryness (humidity) of a gas. The less moisture in the gas, the lower the dew point temperature. The dew point of a good desiccant dryer should be up to the dew point temperature at -40.The use of desiccant dryer can be divided into single and centralized type, stand-alone dehumidifier dryer, usually including dryer mainframe, drying bucket, suction machine. The use of single type suitable for a variety of drying, the utility model has the advantages of high efficiency and fast drying, convenient refueling. The dryer includes a centralized dryer host and a plurality of drying barrels, each drying barrel heating controller independently, can also dry a number of different materials, and with the air flow control valve to control the volume of each drying barrel.
How do you achieve the highest drying efficiency?A good drying efficiency is determined by the following four factors: drying temperature (Drying, Temperature), drying time (Residence, time), air volume (Air, flow), dew point (Dew, point). These four factors are linked together, and any change in conditions will affect the drying effect.Drying temperature (Drying Temperature) refers to the temperature of the air drying barrel, each kind of raw materials because of its physical properties, such as molecular structure, density, specific heat, moisture and other factors, there is a certain limit when the drying temperature, the temperature is too high will make some additives in the raw materials of volatile deterioration or caking, too low make some crystalline materials can not achieve the desired drying conditions, such as: PC/120 degrees, ABS/80 to 95 DEG C. In addition, insulation and insulation are required in the selection of the dry drum to avoid drying temperature leakage, resulting in insufficient drying temperature or waste of energy.
With the widespread use of engineering plastics, desiccant dryers have gradually taken over from the traditional hot air dryers (ovens). The use of desiccant dryer has the following four benefits:1, the water in the plastic raw material can be taken away to eliminate the generation of the bubbles, so that the products can achieve the ideal mechanical, electrical, dimensional stability and smooth appearance.2, to prevent the production of defective products and return losses, greatly reducing waste production.3, because dehumidification dryer uses very dry air for dehumidification work, so it can shorten the drying time and save working hours.4. The air lines of the desiccant dryer adopt sealed circulating system and are equipped with filters, so they are free from the influence of the outside climate, and can prevent dust from polluting in the factory and improve the working environment.
