A cliff-type multi-stage biomass combustion device

Abstract

The invention discloses a cliff type multi-level biomass burning device. The cliff type multi-level biomass burning device comprises a plurality of burning chambers arranged in a stacked mode. Each burning chamber comprises a furnace body, a feeding device and a boiling burner. Each boiling burner comprises an inner shell, an outer shell and a first air blower, wherein the inner shell and the outer shell are arranged in the furnace body, an air cavity is formed between the inner shell and the outer shell, air holes are formed in the side wall of the inner shell, and the outer shell is provided with an ash discharge pipe and a first air inlet pipe for the air cavity and the first air blower to be connected. The ash discharge pipes are all communicated with an ash outlet in the furnace body of the burning chamber at the bottommost layer. The multiple burning chambers can make multiple biomass fuel be sufficiently burned, and the burning efficiency is maximal. The smoke enters the burning chamber at the upper layer for preheating, and sufficient burning of the fuel is guaranteed; energy saving and high efficiency are achieved, biomass ash is discharged in a centralized mode, and the problem that the ash is liable to be bridged and difficult to discharge is solved; air is supplied through the first air blowers to enable the biomass fuel to writhe, the biomass is sufficiently mixed with the air, and coking is avoided; sufficient burning of the biomass fuel is guaranteed, and the burning efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of biomass boiler equipment, in particular to a cliff-type multi-stage biomass combustion device. Background technique [0002] Coal-fired boilers consume a lot of coal and cause serious pollution, which is not in line with my country's sustainable development strategy. Therefore, replacing existing coal-fired boilers with clean energy boilers has become a research hotspot, and using agricultural and forestry residues as boiler fuel Due to its environmental friendliness and renewable characteristics, the biomass boiler has positive significance for saving conventional energy, optimizing my country's energy structure, and reducing environmental pollution, and because of its low price and low operating cost, it has been recognized by users and promoted. . [0003] In the prior art, the biomass combustion furnace is generally a horizontal single combustion chamber. Due to the wide variety of biomass, the ash mel...

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Problems solved by technology

[0003] In the prior art, the biomass combustion furnace is generally a horizontal single combustion chamber. Due to the wide variety of biomass, the ash melting point, ash content, moisture, combustion time and calorific value of different types of biomass are different. This single combustion chamber The combustion furnace can only burn a single type of biomass fuel, which has caused a huge obstacle to the large-scale use of biomass in the industry, and cannot effectively use biomass fuel. In addition, during the combustion process, the biomass fuel is static, and the biomass fuel at the bottom is difficult to In full contact with air, it is easy to burn insufficiently and eventually lead to coking

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