Features for Heavy Metal Control System of Rotary Kiln

Using the rotary fluidized incineration technology combining with flue gas purification device can effectively control the secondary pollution to reach the national emission standards. When the waste fuel is used, the heavy metal along with the waste fuel will enter the furnace film for combustion. In the combustion process, the heavy metal with different characteristics transforms into two directions in the furnace. Most of the heavy metal coagulates in the ash and reacts with the sulfur and chlorine for consolidation. Part of the metal in gaseous phase enters the gas. The test has proven that the concentration for the emission of the heavy metal is not high. In a summary, the control system of the rotary kiln for the heavy metal has the following advantages.

First, the special design is used to in the rotary kiln which can process the wastes with high calorific value waste. In the kiln, the wastes with calorific value are dried, mixed, homogenized and incinerated partially. The rotary kiln runs without stop. If the temperature of the rotary kiln is too high, it is very unfavorable for the maintenance cost, service life for the kiln body, the working environment on the site and the heat efficiency. Controlling the temperature of the rotary kiln can solve the problems very well.

Second, according to the time, temperature and the turbulivity principles, the fluidized bed is the ideal equipment. The fluidized bed itself is particularly adapted to the fuel with low calorific value. The requirements for the waste water are not high, which can avoid the blocking of the impurities. The fluidized bed can achieve the deacidification in the furnace, which can remove most of the acidic materials in the furnace.

Third, the fluidized bed tubular wind distribution device with the special design is integrated with the wind distribution, slag cooling and the automatic deslagging as a whole. The operation is convenient with very high technology content. 

Forth, the adaptability for the system waste is very board. The system has the characteristics of compact structure, small footprint and high combustion efficiency, which is suitable for the long-term operation.