Lignite drying and quality and the country is also a need to overcome the problem of coal drying expert Dongding dry in many years engaged in the slime, clean coal and coal dewatering drying accumulated a wealth of experience and theory and practice. Engineering and technical personnel of the Division I for the characteristics and use of lignite point to address a range of safety, environmental issues, the successful development of a large drum anaerobic lignite drying device, the system is in the Division I development slime dryer device vertical dry field and a major breakthrough, greatly expanding the use of lignite ways. Division I a brown drum anaerobic lignite dryer system in Inner Mongolia, Liaoning, Yunnan rapid promotion used to solve the practical problems of customers, won praise welcome owners friends come to visit our company exchange. Division I the lignite dryer system installed for customers in Dandong area, the system configuration Division I newly developed the lignite drying dedicated large burner stove, completely solve the problem of lignite drying heat source selection troubled. Dongding drum anaerobic lignite dryer to mention quality technical characteristics: (1) dry lignite do not get damp absorbent: dried lignite larger physical and chemical changes in the pores collapse, the cross-linking reaction and tar migration pores formation seal results montanic becomes more and more hydrophobic, and also be able to observe the hardening of the lignite, which also led to the formation of the rigid structure of the lignite. As a result, lignite from soft coal is converted to hard coal, is hydrophobic and hydrophilic conversion to stamp out lignite dry damp absorbent, which can achieve the long-distance transport of lignite. 
 (2) dry lignite volatiles can be effectively protected: the humidity content of the carrier wet medium, without volatile release conditions; 
 (3) a high degree of automation, simple manipulation: a high degree of system integration, and with automatic intelligent monitoring system, the hot stove furnace, the inlet of the dryer, the dryer outlet and induced draft fan entrance of the main parts of the temperature, pressure, flame, smoke real-time monitoring of oxygen and other parameters, to achieve automatic control and regulation system running, the parameter continuous automatic acquisition, fault alarm and safety interlock protection. Vibrating feeder, dryer, cited devices such as fans, blowers, spiral feeder with frequency control, according to the needs of production and operating parameters, using the appropriate speed, not only can easily control the final moisture indicators but also save a lot of power. 
 (4) Energy efficient: dry heat loss (drying) machine, high thermal efficiency; heat source coal burnout rate of pulverized coal up to 99% of the hot stove, the effect of heat transfer efficiency than traditional coal-fired hot air furnace section Coal 30 --- 50%; lignite powder produced by the drying process can be used as a fuel, which greatly reduces the cost of fuel. 
 (5) Safety: seamless wind phenomenon unique sealing structure to discharge completely solve the sealing difficulty to achieve full oxidation negative pressure operation to eliminate the possibility of lignite combustion and explosion, safe and reliable operation.