How to Choose the Heat Source for the Rotary Dryer？
Rotary dryer is an important equipment in modern industrial production. In order to reduce the energy consumption of the drying equipment, the selection of the heat source is very important. The main factors that users consider when choosing the heat source are usage cost, labor volume, and labor intensity. The main heat sources include natural gas, boiler flue gas, coal, oil, biogas, biomass particles, steam, etc. Before drying, it is necessary to choose a suitable heat source to maximize its advantages.
Firstly, it is necessary to understand the physical and chemical properties of the material and the drying requirements of the finished product, such as whether the drying process of the material can withstand high temperatures, whether by-products will be generated, and whether the material will be contaminated. In addition, the calorific value of the fuel should also be considered. Whether it is convenient, whether it is environmentally friendly, whether the price is economical, etc.
If you want the dried product to be purer, with less or no impurities, you can choose to use biomass fuel. Natural gas, steam and biogas can also be used for indirect heating if possible. The drying process will not pollute materials and has good environmental protection.
Materials with high moisture content, high production capacity, and no requirements for cleanliness can be fueled with coal, diesel or other fuels for direct heating and drying, which can not only achieve higher thermal energy temperature, improve thermal energy utilization, shorten drying time, but also make fuel price more economical.
Boiler waste heat can also be used as heat source to supply heat to rotary dryer, which not only greatly reduces heating costs and effectively realizes waste heat utilization, but also reduces waste gas treatment costs. The control of flue gas heating is very simple and can largely evaporate the moisture of the material.
