The invention relates to an efficient
drying and quality-improving device and method for
brown coal. In the prior art, no efficient
drying and quality-improving device or method for
brown coal, which is used for improving the utilization value of the
brown coal, exists. The efficient
drying and quality-improving device is characterized by comprising a
coal storage bin, a fuel bin, a
hot blast stove, a cylinder-type dryer, a product bin, a
cyclone dust collector, an electrical
dust collector and a plurality of pipelines, wherein both the product bin and the
coal storage bin are connected with the cylinder-type dryer; the cylinder-type dryer is connected with the
cyclone dust collector; and the
cyclone dust collector, the electrical dust collector, the fuel bin are all connected with the
hot blast stove. The method is characterized in that the
raw material of the brown
coal is conveyed into the cylinder-type dryer from the
coal storage bin; the
hot blast stove generates high-temperature
flue gas at the temperature of 700-900 DEG C, and the
flue gas is conveyed into the cylinder-type dryer; the
raw material of the brown coal is dried by the high-temperature
flue gas and conveyed into the product bin from the cylinder-type dryer for sealing and cooling, so that the finished product of the brown coal is obtained after cooling. According to the device and the method, the
moisture in the brown coal can be reduced substantially, and a part of ash content in the brown coal can also be reduced, so that the utilization value of the brown coal can be improved.