The lignite dryer mainly dries the material through the heat source, so the heat loss in the production process of the lignite dryer should not exceed 10%. Some large and medium-sized lignite dryer insulation work is in place, heat loss can be kept at about 5%, increase the inlet air temperature of the lignite dryer, reduce the dryer outlet waste problem, which can help the improvement of the thermal efficiency of the drying equipment, because the inlet temperature of the lignite dryer equipment is much higher than the allowable temperature of the product, reduce the outlet waste temperature to ensure the wet content of the product, the outlet waste temperature is too low and the product moisture content increases, can not meet the water content requirements of production.
Before the lignite material enters the dryer, it can be dehydrated by filtering centrifugation and evaporator, which can increase the ancient content of the material and reduce the additional load of the dryer。 Therefore, it is very important to ensure an optimal amount of exhaust gas circulation for our slime drying process.
1. Increase the temperature of the inlet air and reduce the temperature of the exhaust gas at the outlet.
Increase the temperature of the inlet air of the lignite dryer and reduce the temperature of the outlet exhaust gas at the same time, so as to increase the temperature inside the drying equipment, reduce the heat carried away by the exhaust gas, increase the temperature difference of the whole drying process, and help improve the thermal efficiency of the drying equipment. However, we need to pay attention to the fact that the inlet temperature of the slime drying equipment is much higher than the allowable temperature of the product, and the temperature of the exhaust gas at the outlet should be reduced to ensure the wet content of the product.
2. Thermal insulation measures.
For lignite dryer, the number of insulation layers in the drying system is as much as possible, to maintain a good heat energy for the lignite dryer, in order not to let the heat energy loss, the lignite dryer uses the induced draft fan and the blower, through the series use of the induced draft fan and the blower, the leakage of dry matter can be prevented, if the leakage will cause the loss of heat energy of the lignite dryer. In addition, thermal insulation materials can also be used to carry out comprehensive thermal insulation treatment on the lignite dryer system, which greatly reduces the ineffective heat dissipation, effectively improves the thermal energy utilization rate of the lignite dryer, reduces fuel consumption, and reduces the temperature in the drying workshop and plant.
3. Reduce the evaporation load of materials.
When the material enters the lignite dryer, it needs to be filtered first, and then the dehydration treatment of the material is carried out through the evaporator, which can increase the solidification of the material and reduce the load of the evaporated and dried material, which is the best way to save energy for the lignite dryer. It can not only solve problems for the user's enterprise, but also reduce the cost of production for the user's enterprise.