Large stove and application method thereof

Abstract

The invention discloses a large stove and an application method thereof. The large stove comprises a hearth encircled by the side wall of a stove body and used for combusting fuels, wherein a fire hole capable of being positioned at the bottom of a pot is arranged above the hearth; a flue outlet for leading out combustion tail gas is formed in the side wall of the stove body; a feed port and an ash cleaning port leading to the insideof the hearth are formed in the side wall of the furnace body; the feed port is higher than the ash cleaning port; a grate is arranged in the hearth corresponding to the feed port, and is provided with a stacking area for concentrating particle-shaped biomass fuels; the area of the stacking area is smaller than the area of the fire hole; and an air supply grille is formed below the grate. The large stove and the application method thereof are suitable for concentrated combustion of the particular-shaped biomass fuels, prevent the atmospheric pollution, and improve the combustion efficiency.

Description

technical field [0001] The invention relates to a combustion device, in particular to a large stove using renewable biomass granular solid fuel and a method for using the same. Background technique [0002] Dazao stove is the most widely used civilian stove in the rural areas of northern China. It mainly burns biomass fuels such as straw and wood, and adopts a relatively primitive direct combustion method. Existing large stove comprises a hearth, is generally formed by masonry of building materials such as brick or billet, and embeds a large firewood pot in the upper mouth of fire of the hearth. Usually, the large firewood pot is fixed relative to the hearth in use; there is a feeding port under the hearth, and the smoke outlet of the hearth is generally connected to the heated kang, and the end of the heated kang is connected to a flue; the method of using this large stove is to put straw, wood One end of the biomass fuel is inserted into the furnace from the feed port, an...

AI Technical Summary

Problems solved by technology

[0003] As we all know, the original straw direct combustion method has the following insurmountable defects: First, emission pollution: when straw and other fuels are directly fired, the volatile matter in the straw will directly It is discharged into the atmosphere in the form of black smoke, which inevitably pollutes the atmosphere; second, the combustion efficiency is very low. Experiments have proved that the combustion efficiency of straw direct combustion is less than 23%. The reason is that the volatile matter in straw accounts for 70%. It does not participate in combustion, so a large amount of fuel is required to obtain heat through straw direct combustion. Generally, a household in northern rural areas needs to burn 18-20 tons of straw per year; third, it is inconvenient to use. The continuation of combustion needs to continuously add fuels such as straw and firewood to the stove, which usually requires both hands and feet, which is very inconvenient to operate; fourth, it is not clean, and the feeding port of the existing large stove is open, so when burning straw When cooking or heating, the flame and smoke in the hearth often return from the feeding port, blackening the stove and even the walls or furniture in the kitchen, so it is difficult to keep the kitchen clean and hygienic when using large direct-fired stoves in rural areas; Fifth, it is easy to generate redundant combustion and waste fuel. As a civilian stove (for example, for household cooking), it usually only takes about half an hour to an hour, and it is difficult to extinguish the burning straw, wood and other fuels after use. , can only burn all the fuel, resulting in redundant combustion

However, precisely because of the small size and high density of this granular biomass fuel, when it is used in a large stove with a large furnace, it is difficult to gather the greatly reduced granular fuel to form an effective combustion. , so granular biomass fuel cannot be directly extended to existing large stoves

Images