Cooling and drying device for biomass briquette fuel and method thereof

Abstract

The invention discloses a cooling and drying device for biomass briquette fuel and a method thereof, and belongs to the field of energy technicalization. The cooling and drying device comprises a box body and a material conveyor arranged below the box body. Holes are formed in a conveyer belt of the material conveyor. An input opening and an output opening are formed in the two ends of the box body. The box body is separated into at least two cooling and drying chambers through partition plates. The upper portions of the cooling and drying chambers are communicated through an air exhausting pipe and an induced draft fan. The method comprises the steps that 1, the fuel is conveyed into a first cooling and drying chamber through the material conveyor, drying air enters the first cooling and drying chamber from the lower portion of a fuel bed, and after the drying air penetrates through the fuel bed, the drying air is exhausted out through the upper portion of the fuel bed; and 2, the primary cooled fuel is conveyed into a second cooling and drying chamber, fuel of which the temperature is close to the room temperature is obtained, and finally the fuel is packed. According to the cooling and drying device for the biomass briquette fuel, the structure is simple and practical; relative movement between the fuel is avoided in the conveying process of the fuel, and thus the broken rate of the fuel is reduced; the drying rate of the fuel can be adjusted according to the actual operational needs, so that energy consumption is reduced; the device is especially suitable for lower-density biomass briquette fuel with the diameter being greater than 20 mm.

Description

technical field [0001] The invention belongs to the field of energy technology, and in particular relates to a biomass briquette fuel cooling and drying device and a method thereof. Background technique [0002] Biomass briquette fuel refers to agricultural and forestry residues and processing wastes (such as crop straw, peanut shells, branches, wood chips, etc.) quality-extrusion-drying-cooling-quality inspection-packaging and other processes, and finally make biomass fuel with a certain shape and higher density. Compared with biomass raw materials, biomass briquette fuel has the characteristics of high bulk density, convenient storage and transportation, and stable combustion. It can be directly used as high-quality clean energy and has good social and economic benefits. [0003] In the production process of biomass briquette fuel, the moisture content of biomass raw materials is usually kept at 18-22%. The moisture in biomass raw materials reduces the hardness of biomass...

AI Technical Summary

Problems solved by technology

At present, countercurrent drying coolers are usually used for cooling and drying. The disadvantages are that due to the high moisture content and low hardness of the fuel, the breakage rate is high during cooling and drying, the resistance of the material layer is large, and the power consumption of the induced draft fan is high.

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