Nowadays, from household clothes drying to dishwashing drying, to industrial drying, the application of dryer is more and more extensive, but the controversy is also constant, many people have doubts about the dryer, but undeniably, the industrial dryer batch production is irreplaceable, such as the following applications of dryer
Nowadays, from household clothes drying to dishwashing drying, to industrial drying, the application of dryer is more and more extensive, but the controversy is also constant, many people have doubts about the dryer, but undeniably, the industrial dryer batch production is irreplaceable, such as the following applications of dryer。
A beer sludge drying of beer sludge drying equipment is used for drying slag beer, beer sludge contains rich protein and trace elements, has high nutritional value, so its general drying method to dry feed higher value after drying after beer sludge, uneven drying after finished dry wet or dry wet, nutrient loss is big, poor quality, and high cost of drying Beer production of clean hot air dryers with efficient furnace slag as the drying medium, high moisture content of beer sludge into the rotary drum dryer, directly by the feeder is the special copied material in the drum plate and the feed plate with scattered, with a good contact with high temperature hot air, quickly remove most of the water, then the material moisture content is reduced, special air-conditioning units, air distribution according to the size of the moisture content of materials, material under the action of induced draft fan, slowly moving towards the feed end, and then by air, the moisture content of materials has reached around 12%, baked out of good color, material protein loss rate is low, deeply users love。
Two general drying corn drying is slow, the output is very low, if the dryer drying is faster, will be very good for moisture control, many people say the dryer for temperature control is not good, as the deterioration of the baking temperature, starch content slightly down especially when the temperature more than 55 degrees, higher viscosity of corn starch gelatinization degeneration, with the longer the time, even will lose using coking value but for poultry or pigs with corn enough, large quantities of want to dry, or in the dryer。、
Three wood drying in order to guarantee the quality of being dried wood, must control the drying medium, such as current usually adopt wet air humidity, in order to obtain the effect of fast high quality dry wood, this process is called wood drying wood contains a certain amount of moisture in the wood moisture much vary with tree species and cut down season in order to guarantee the quality of wood and wood products and prolong the service life, proper measures must be taken to make the moisture in wood (moisture content) reduced to a certain extent To reduce the moisture content of lumber, must raise the temperature of the wood, the wood moisture evaporation and moving outward, to a certain flow velocity in the air, the moisture quickly leave the wood, achieve the purpose of drying in order to guarantee the quality of being dried wood, also have to control the drying medium, such as current usually adopt wet air humidity, in order to obtain the effect of fast high quality dry wood, this process is called wood drying wood drying is the guarantee and improvement of wood quality to reduce wood etc important link to improve the utilization ratio of timber。
Four chicken manure drying chicken manure dryer is the purpose of drying chicken manure, will dry chicken manure to add fertilizer materials: fish feed, fruit trees such as sales of chicken manure dryer feed the biggest characteristics is the dust cleaning and deodorization, variable pig feed, fresh chicken manure waste is organic manure, chicken manure dryer can be as high as 70% 80% water content of manure drying to 13% moisture content of waste, energy conservation and environmental protection free from contamination。
Five dryer work step 1. Preheat phase when the material come into contact with hot air, hot transfer heat to the surface of a material at this point, the unit time to heat than evaporation of surface water on the surface of the material needed for the heat, the material surface temperature rising rapidly when hot air wet bulb temperature is reached, the unit time smuggled to the material on the surface of the heat is equal to the surface water evaporation heat balance in the preheat phase, moisture content of materials is reduced, the surface temperature of dryer drying speed in increasing preheat phase time is short, out of the water is not much. 2. Constant speed drying stage in the constant speed drying stage of dryer, due to the moisture content of materials, material internal moisture easily spread to the surface, material internal moisture migration to the surface can be adapted to the evaporation rate of the material surface moisture makes the surface of the material was wet, not combined with water and heat transfer rate and speed of evaporation of water surface is always remain the same whose character is moist material temperature does not rise, and eliminate material combined with water。
Reduce the dryer drying stage when the material moisture content down to the critical moisture content, the drying rate decreases with the decreasing of water content of the drying rate of material dryer decreased as the moisture content is reduced, shows that the internal moisture migration to the surface of the rate is lower than the material surface moisture evaporation rate, as well as the surface of the materials, especially highlighting part, will become dry, water evaporation in the area of the unit time decrease as a result, the surface evaporation heat to reduce, the surface temperature of the material increased, the drying rate of dryer As the drying process of the dryer goes on, the moisture content in the material decreases gradually, but the decreasing rate becomes smaller. The drying rate of the dryer gradually decreases and then decreases。
