Layer combustion boiler for combusting bundled straw

Abstract

The invention discloses a layer combustion boiler for combusting bundle straw. The layer combustion boiler comprises a feed mechanism, a combustion chamber and an air supply mechanism, wherein the combustion chamber is provided with a front arch and a rear arch, a feed inlet is formed below the front arch, a chain fire grate is arranged at the lower part of the combustion chamber, and the lower part, corresponding to the tail end of the chain fire grate, of the rear arch is provided with a slag baffle; and the air supply mechanism comprises a primary air supply mechanism and a secondary air supply mechanism, the first air supply mechanism comprises a primary fan and a primary air chamber which is arranged below the chain fire grate, and the second air supply mechanism comprises a secondary fan, front-row secondary air nozzles arranged at the front arch and rear-row secondary air nozzles arranged on the rear arch. When the structure is in use, the layer combustion boiler for combustingthe bundle straw overcomes the shortcomings of the prior art, so that the problem of unstable combustion caused by other over-humid boiler fuel which continuously combusts the whole fuel bundle can be solved, tar and dirt generated by oxygen-poor combustion of the fuel bundle also can be avoided; moreover, a combustible carbon content of discharged slag can be greatly reduced and boiler efficiency can be improved.

Description

Technical field [0001] The invention relates to a boiler equipment, in particular to a layer-fired boiler that burns bundles of straw. Background technique [0002] While fossil energy such as coal, oil and natural gas provides energy for the development of human society, it also causes great harm to the human living environment, such as the greenhouse effect, NO x Emissions, SO 2 Emissions and dust pollution, etc. At the same time, human society is also facing the problem of the exhaustion of fossil energy. Therefore, seeking to develop new energy sources and realize the sustainable development of society has attracted increasing attention from all over the world. [0003] As a renewable clean energy, biomass energy has a good development prospect. The National Academy of Sciences clearly stated in the "Energy Conversion 1985-2010": "By 2010, the energy obtained from large-scale biomass conversion will be 20 times the total energy demand in 1985." my country has also proposed a ...

AI Technical Summary

Problems solved by technology

Due to the strong gasification reaction, the pre-combustion chamber will soon be polluted by tar and pollute the convection heating surface, which will affect the long-term stable and safe operation of the system

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