Furnace nozzle, combustion furnace and heating equipment in a biomass combustion furnace

Abstract

The invention provides a furnace nozzle in a biomass combustion furnace. The furnace nozzle comprises a horizontally arranged cylindrical inner furnace nozzle and a circular truncated cone outer furnace nozzle, wherein a hollow ventilation zone is formed between the inner furnace nozzle and the outer furnace nozzle; the interior of the inner furnace nozzle mainly forms a hearth of the combustion furnace; ventilation holes used for providing air for biomass particle fuel combustion are formed in the bottom of the horizontal cylindrical inner furnace nozzle; one end, in the axial direction, of the inner furnace nozzle is connected with the bottom of a combustion feeding pipe; the other end, in the axial direction, of the inner furnace nozzle is inserted in a heat exchanger connected with the combustion furnace; the end which is in the axial direction of the outer furnace nozzle and is inserted in the heat exchanger is a small-diameter end; the end, which is in the axial direction of the outer furnace nozzle and is near the combustion feeding pipe is a large-diameter end; and the radial distance, namely, the width d of a circular seam on the periphery of a fire nozzle, from the inner wall of the small-diameter end of the outer furnace nozzle to the outer wall of the inner furnace nozzle is 0.8 to 5 mm. Through the adoption of the corresponding combustion furnace of the furnace nozzle, the combustion efficiency is high, the tail gas detection situation is good, and safety and environmental protection are achieved. The invention further correspondingly provides the combustion furnace and a heating device.

Description

technical field [0001] The invention relates to the technical field of combustion equipment, in particular to a burner nozzle in a biomass combustion furnace, a combustion furnace and heating equipment. Background technique [0002] In the more than 100 years since the production and promotion of flue-cured tobacco, coal-cured tobacco leaves have a history of more than 50 years. Coal-cured instead of the original wood-cured is a great progress in the history of tobacco curing. To protect forest resources and ecological environment have made important contributions. In recent years, the tobacco industry has absorbed foreign experience and technology and successfully developed and promoted intensive curing rooms. From traditional curing rooms to intensive curing rooms, this is another major progress in the history of tobacco curing, which has significantly improved energy utilization and effectively reduced Baking costs. However, intensive barns have not fundamentally solved...

AI Technical Summary

Problems solved by technology

[0007] In addition, specific to the combustion furnace, the existing biomass pellet combustion furnaces often cause coking during combustion in the furnace due to the quality of the particles, which affects the combustion efficiency, and even causes the combustion furnace to be blocked and flamed out in severe cases.

In addition, many existing combustion furnaces require manual and regular cleaning of the furnace before they can be used, which affects efficiency and causes waste of resources

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