Characteristics of multi-stage rake furnace and principle of activated carbon regeneration
1. The structure of multi-stage furnace is simple, strong, long service life, easy maintenance and repair.
2. Simple operation, most suitable for automation.
3. The operation of the furnace does not require special technology, and is automatically controlled by the automatic control system equipment, so the operation and management are easier.
4, high efficiency, low operating costs: due to the convection contact of combustion gas and combustion heat exchange, it becomes high efficiency, in addition to the need for less power, low operating costs.
5. Small installation area: Because of the strong vertical equipment, only a small installation area is required.
6. According to the end use of the product, through the temperature control of each layer of the furnace bed, flexible, flexible, "tailored" to manufacture different quality activated carbon products, precisely control the roasting of metallurgical metal concentrate.
7. Residence time of the material in the furnace: the residence time can be precisely controlled by adjusting the mechanical movement speed of the material on the furnace bed. The special requirements for the residence time of the material in each temperature zone can be realized, and the residence time in each hearth can be controlled.
8. Drying in the first and second stages of the multi-stage furnace, the water of activated carbon is evaporated and dried at the temperature of 100 ~ 300℃.
9. Baking in the third stage of the multi-stage furnace at 400 ~ 600℃ temperature, the activated carbon adsorbed in the fine pores of organic matter volatiles evaporation, carbonization.
10. Activating the 4th to 6th stage in the multi-stage furnace at 800-1000℃ and blowing steam, the carbonization in the activated carbon pores in the baking project is removed, so that the activated carbon is restored to activity.