Combustion chamber

Abstract

The invention provides a combustion chamber. The combustion chamber comprises a casing, wherein a fire grate is arranged in the casing, primary air inlets and two secondary air inlet short pipes are arranged on the fire grate, a secondary air pipe is assembled on each secondary air inlet short pipe in an inserted manner and comprises horizontal air pipes, each horizontal air pipe can rotate around the own central axis for adjustment, and multiple secondary air holes are evenly distributed in the horizontal air pipes of the two secondary air pipes, face the center of an inner cavity of the combustion chamber and are located above the fire grate in the vertical direction. The secondary air inlet short pipes and the secondary air pipes are assembled in an inserted manner, the fire grate can be placed in the combustion chamber firstly, then the secondary air pipes are assembled on the fire grate in an inserted manner, and mounting is quick and convenient. The direction of the secondary air holes can also be adjusted by rotating the horizontal air pipes according to actual requirements, and effective disturbance caused by secondary air to suspended carbon granules and combustible gas in the combustion chamber is intensified. The combustion chamber is applicable to transformation of combustion chambers of small air heaters, and effects of saving fuel and reducing pollutant discharge can be realized.

Description

technical field [0001] The invention relates to a combustion chamber suitable for high volatile solid fuels, in particular to a combustion chamber that can be matched with a small hot blast stove for drying agricultural products and is suitable for fragmented or granular wood coal, lignite or biomass briquettes. Energy-saving and environment-friendly combustion chamber. Background technique [0002] In the past ten years, small hot blast stoves have been widely used in the drying of agricultural products. The combustion chamber of small hot blast stoves is mainly composed of traditional strip grate and shell. The shell can be cylindrical or rectangular, and the air passes through the grate. The gap enters the inner cavity of the shell upwards, the fuel on the grate burns in the inner cavity of the shell, and the hot flue gas generated by the combustion flows upwards and exits the furnace body, passes through the heat exchanger, and then is discharged from the chimney. In th...

AI Technical Summary

Problems solved by technology

In the combustion chamber of a small hot blast stove, the air from the strip grate is generally used to support the combustion. The fuel and air are not mixed uniformly, and the combustion is not sufficient, which is easy to waste fuel.

Especially when burning coal, lignite and biomass fuels with high volatile content, more combustible gases will be precipitated. Due to the lack of secondary air to support combustion, some suspended carbon particles and combustible gases will be released without complete combustion. Along with the flue gas, it is discharged from the combustion chamber, and thick dust and yellow smoke are often discharged from the chimney, which not only wastes fuel, but also seriously pollutes the atmosphere, which obviously does not meet the requirements of energy conservation and environmental protection.

[0003] Although the shells of a few combustion chambers are equipped with air ducts for introducing secondary air into the combustion chambers, these air ducts are generally directly integrated in the shells, and cannot directly support the old combustion chambers that do not have secondary air. chambers, and if all the combustion chambers are replaced with new ones, the old combustion chambers will all be discarded, and the waste is serious

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