Operating principle

 MBL coal-burning hot air furnace consists of MBL coal burner, hot gas purifying chamber, and air mixing chamber. Coal burner supplies the primary heat. Raw (soft) coal is fed into the coal hopper through the coal feeder. The coal at a certain height is delivered by chain grate into the burning chamber of coal burner. With the help of combustion fan, hot semi-coal gas produced by burning coal erupts from fire outlet of coal burner and enters in hot gas purifying chamber. The chamber is built of fire resistant materials; hot semi-coal gas begins secondary combustion in purifying chamber. The dusts impact, aggregate and drop in the purifying chamber. Clean hot air from purifying chamber at about 1000℃ then mixes into a certain amount of cool air, the mixture at about 400℃ flows into spray tower for drying. Temperature of hot air can be adjustable according to the demand. When hot air is supplied continuously, its temperature fluctuates between ±5℃. Cinder is discharged from the other side of coal burner by tapping machine.

Advantages

（1）、Hot air is very clean, dust content is between 50 to 80 mg/Nm³

（2）、Cost of heat supply is low, which is one fifth of that by burning diesel fuel, One third of that by burning heavy oil, Per ton of powder detergent consumes 80~110kg of coal. Comparing with burning generator gas, energy is cut down by 30~40%.

（3）、Temperature of hot air can be easily adjustable between 300 to 500℃. When hot air is supplied continuously, its temperature fluctuates between ±5℃.

（4）、Meet the demand of environmental protection. No secondary pollution, good operating conditions.

（5）、Operate simply, adjust easily.

（6）、High security, there is no danger of explosion.

（7）、Equipment is durable, low cost of operation, easy maintenance. 

Applications

powder detergent, detergent additives

Relevant customers

Zhejiang Nice Group      Nafine Group    German Henkel Detergent Co., Ltd.     Guangzhou Liby Group    Nanjing Jiahe Daily-use Chemical Co., Ltd.     Hangzhou Kao Transfar Co., Ltd.   Dongguan Weiliang Industrial Co., Ltd and so on

Specifications of hot air furnace