How much Shandong convection drying equipment manufacturers offer

Convection drying equipment Scope Ning Weidong drying plant Shandong professional wood dryer manufacturers, perennial engaged in timber dryer production and distribution, the company has extensive experience and knowledge reserves drying equipment. Today, Xiao Bian to share with you the convective heat drying equipment scope. Existing drying equipment, most are convection drying. Such as hot air drying, hot air drying of materials in contact and the heat exchange to evaporate the moisture. Common types of equipment convection dryer representative, such as fluidized bed dryer, flash dryer, flash dryer, spray ,, rotary dryer and the like. Practical application, there are stand-alone use, but also a combination of machine to use, as well as deformation models and so on. Air dryer, fluidized bed dryer, a spray dryer is hot air as the heat transfer medium, in the dry, but also completed the transfer of the material. The main feature of these dryers without drive components. Dried powder, grain, sheet materials, the most common way is hot air or gas flow is applied to the surface of the particles. Airflow through the material for heat, to evaporate water. After evaporation of water vapor directly into the air were taken away, there is an air, inert gas drying system commonly used in the drying medium, direct combustion gases or superheated steam. This method allows the hot air in direct contact with the material, while heating to remove moisture. The key is to increase the contact area of ??the material with hot air, hot air to prevent drift. The material temperature during almost constant rate of drying hot air wet bulb temperature the same, so the use of high-temperature hot air heat-sensitive material to be dried. This drying method of drying rate is high, less investment in equipment, but low thermal efficiency, the following is the basic situation of various types of convection drying equipment. ⑴ box-type dryer is one of the oldest dryer. Material with plate costumes, trays placed in the car frame layer by layer by discharge into, with steam or electricity as a heat source, hot air inside can be recycled and some emissions, so that a more uniform drying. Although the low thermal efficiency, but still a lot of use, but also continue to manufacture, because the structure is simple, operation is not often care for no obvious problems. But a lot of material to be overturned when dry, turn pink, heat-sensitive materials often easy to change, does not apply to dried with solvent materials. Due to material buildup, its inner heat and mass transfer is poor, and thus lower the drying rate. (2) net belt dryer can be used for drying corn, grain and vegetables. This machine is equipped with a belt made of stainless steel mesh, the material that comes with moving can be segmented heater. This means each 1.8 ~ 2m length of a unit can be connected up to 40m, the processing capacity per hour up to 4t. The constant rate drying stage hot air temperature up to 130 ℃, exhaust up to 85% relative humidity. (3) drum (or rotary kiln type) dryer dryer is a slightly angled horizontal cylinder, materials and hot air convection through the dryer, an earlier models appear. Although the structure is relatively simple, but high thermal efficiency, allowing high operating temperatures. Now mine or inorganic chemical industry applications still more. For several years, the improvement of the barrel lifting plate (copied board) structure, additional heating tube and the inner sleeve, etc., all make this dryer performance continues to improve, the application range is still expanding. (4) air-dryer system and hot air stream carrying particles, so that the heat drying. For the gas stream with the particles have a relatively high speed, increasing the heat transfer and mass transfer rate, based on the increase in straight pipe of adjustable, made of pulse air dryer, drying efficiency than the original pulse air dryer air dryer for a straight pipe higher. In addition there is a jacket made from the dried cylinder space, in the upper part of the tangent cylinder into the hot air and material from the center of the cyclone air dryer tubes exported to continue heating the air in the drying process and materials. There are a lot of improvements to extend the residence time, such as scroll, casing and so on. Such a dryer is mainly suitable granular, materials with surface water. (5) The material spray or suspension is atomized, the droplets with hot air directly into the device dry powder and granular products. Centrifugal spray atomization method, pressure spray, air spray. Drying room design, the influence of the hot air is introduced into the way of the drying process is very high. In addition, the temperature and the thermal efficiency of import has a lot of hot air, the higher the temperature, the thermal efficiency is also higher. Usually into the wind 150 ℃, the thermal efficiency of about 30%. (6) The flash dryer means lines at the bottom of the cone into the hot air, and let stirred to fall cake is dispersed by vigorous stirring. After drying powder can be supplied with the air cyclone or a bag filter collection. Adaptive processing dispersible cake or have a certain viscosity of the particulate material. (7) vibration fluidized drying machine this means adding lines to a fluid bed drier air distribution plate or a vibration source machine vibration function. Because you can reduce gas velocity, especially for the uneven distribution of material particle size, drying rate and can improve the thermal efficiency are now a large number of applications. (8) to fluidized bed granulation drier line will be placed in a fluidized bed of fine powdery material, when the material is injected into the stream of liquid and powder spread on the surface of the home early so that gradually dried. Adhesive droplet and particle powder gradually increased to the desired diameter, has industrial-scale application of this system in terms of urea granulation.