Feature
The drum dryer/cooler can dry and cool the solid to a very low temperature, making it close to the ambient temperature or cooling air temperature. By combining the heat recovery during the drying process with evaporative cooling (re-evaporation of the residual moisture in the solid during the cooling process), it is highly fascinated and can save up to 20% of the heating energy.
Features
Drying/cooling to a particularly low material temperature can be achieved by the single-shell design of the drum and an independent dry-cold cavity. Therefore, in contrast to the double-shell drying/cooling drum, the drum dryer has no contact point between the cooling drying material in the inlet area of the dryer and the hot inner drum. By using previously cooled air instead of ambient air, for special products, solids can even be cooled to temperatures as high as 10°C. Through the two-part structure of the central chamber, the exhaust gas flow from the drying zone and the cooling zone can be extracted and dried separately. When the moisture-filled dryer exhaust gas is dedusted and released into the atmosphere, the warm, dry and dedusted cooling exhaust gas can be returned to the process as preheated drying air, thereby recovering heat from the dryer, warming the solids. The combination of heat recovery in the drying process and evaporative cooling in the cooling process reduces the energy consumption of the drum dryer by as much as 20%. In addition, the separate supply and discharge of gas streams allows for different process control between solids and gas (air). In particular, a countercurrent flow route using dry air and solids flow is a particularly effective high-temperature process, and the calcination of the solids is followed by cooling. Drum dryers are especially suitable for minerals, building materials and raw materials industries. The separate supply and discharge of air flow allows for different process control between solids and gas (air). In particular, a countercurrent flow route using dry air and solids flow is a particularly effective high-temperature process, and the calcination of the solids is followed by cooling. Drum dryers are especially suitable for minerals, building materials and raw materials industries. The separate supply and discharge of air flow allows for different process control between solids and gas (air). In particular, a countercurrent flow route using dry air and solids flow is a particularly effective high-temperature process, and the calcination of the solids is followed by cooling. Drum dryers are especially suitable for minerals, building materials and raw materials industries.
advantage
Cool the dry solid to a very low temperature, close to the ambient temperature or close to the temperature of the cooling air used. High energy efficiency is achieved through heat recovery in the drying process and evaporative cooling in the cooling process
Can be used for subsequent cooling and calcination. Single housing design, easy to maintain and durable
It is easy to use in combination with different heating systems and different fuels.
