Solid fuel combustion method and combustion device

Abstract

A solid fuel combustion method and combustion device (100). The combustion device (100) comprises a furnace (10). The side of a fuel stack layer (1) close to a combustion cavity (3) forms a combustion side (102), and the other side opposite the combustion side (102) forms an air inlet side (101). The air inlet side (101) is provided with a side wall (6) that provides air only to the upper portion of the fuel stack layer (1).

Description

technical field [0001] The invention relates to the field of solid fuel combustion, in particular to a solid fuel combustion method and a combustion device. Background technique [0002] From the perspective of fuel classification, solid fuel is the most widely used combustion material for modern humans because of its rich resources and safe use, especially coal. In addition, with the increase of demand for mineral solid fuel represented by coal, the reduction of resources, and the development of the global new energy movement, renewable biomass combustion materials, such as straw, straw, wood, sawdust, Dead branches etc. are highly valued by people. [0003] At present, the main method of using biomass combustion materials is to directly ignite and burn, which has a very low combustion efficiency and produces a large amount of black smoke, causing environmental pollution. [0004] For a long time, many people have tried to use existing coal-fired stoves to burn biomass fu...

AI Technical Summary

Problems solved by technology

[0008] 1) Low combustion efficiency

During combustion, since the precipitation temperature of volatile components is lower than the ignition point of volatile components, volatile components are first precipitated and discharged into the air in the form of black smoke, and the remaining fixed carbon is burned again, so that only the fixed carbon in it is used for combustion The heat generated not only has relatively low combustion efficiency, but also has emission pollution.

[0009] 2) can not continue to burn

However, because the high-temperature flame is located at the position of the grate, the temperature at the position of the grate is also very high. In a high-temperature environment, the ash after burning is in a viscous molten state, which will stick to the grate and block the grate. If the air flow channel is not enough, the grate will be smeared soon, making the burner unable to continue to work

[0012] In addition, because the volatile matter precipitation temperature of the fuel is lower than the ignition point of the fuel, when the existing forward combustion and reverse combustion devices are ignited, the fuel first reaches the volatile matter precipitation temperature and then enters the combustion state, and the volatile matter precipitated first is black. In the air discharged in the form of smoke, black smoke is formed during ignition, which not only causes serious environmental pollution, but also because it is only ignited by the gradual combustion of fixed carbon fuel, it is not only difficult to ignite, but also the temperature rises slowly and the ignition time is long.

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