Biomass Furnace Dust Recovery and Utilization System

Abstract

The invention discloses a recycling system of biomass stokehole dust. A primary fan is arranged at the bottom of a fire grate of a hot blast stove; a hot blast stove fuel blanking port is formed before the hot blast stove; a biomass fuel blanking port is formed before a drum screen; a secondary fan is arranged in the middle of a hearth of the hot blast stove; a wind pipe is connected between the secondary fan and a stokehole bin; and wind pipes are connected between the biomass fuel blanking port and a drying stove and between the hot blast stove fuel blanking port and the drying stove. The secondary fan sends dust generated by the stokehole bin into the hot blast stove for combustion after the dust is recovered, so that the concentration of the dust of the stokehole bin can be decreased to prevent the dust explosion, and the fuel can be fed when secondary wind is fed to the hot blast stove; and meanwhile, the dust generated by the blanking port is fed in a drying machine through the wind pipe under the effect of negative pressure, so that the dust can be effectively recovered and recycled to prevent the environmental pollution and the waste of biomass combustion.

Description

technical field [0001] The invention belongs to a material processing system, and in particular relates to a biomass furnace dust recycling system. Background technique [0002] In order to improve the combustion efficiency of biomass fuel, before entering the boiler or gasification reactor for combustion, the biomass fuel needs to be dried by a dryer to become a dry material, and then separated by a separator and then stored in a silo in front of the furnace. [0003] Biomass fuel is first fed at the discharge port, and then the impurities are removed through the drum sieve, and the pure biomass fuel enters the dryer. When the feed port is blanking, it is inevitable that there will be dust and pollute the environment, and a small amount of biomass fuel will be wasted. At the same time, the hot stove fuel (such as bark, sheet material, etc.) required by the hot blast stove that provides hot air for the dryer is first fed into another blanking port, and then enters the hot b...

AI Technical Summary

Problems solved by technology

When the material is dropped at the feeding port, it is inevitable that there will be dust and pollute the environment, and a small amount of biomass fuel will be wasted

At the same time, the hot stove fuel (such as bark, sheet material, etc.) required by the hot blast stove that provides hot air for the dryer is first fed into another blanking port, and then enters the hot blast stove for combustion. When blanking, there is also dust phenomenon, pollute the environment

[0004] Dust will always be generated when feeding materials in the silo in front of the furnace. In order to protect the environment, the dust is sealed in the silo and settles naturally. If the concentration of dust accumulation exceeds the limit, if it encounters a high temperature environment, it will cause a dust explosion and cause a dangerous accident.

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