CN107676772B

CN107676772B - Non-electric drive biomass combustion furnace

Info

Publication number: CN107676772B
Application number: CN201711095767.7A
Authority: CN
Inventors: 王自勇; 许兰贵; 王洁; 林叶繁
Original assignee: Henan Aolansite New Energy Technology Co ltd
Current assignee: Henan Aolansite New Energy Technology Co ltd
Priority date: 2017-11-09
Filing date: 2017-11-09
Publication date: 2023-08-01
Anticipated expiration: 2037-11-09
Also published as: CN107676772A

Abstract

The invention relates to a non-electric driving biomass combustion furnace, which comprises a bin and a furnace body, wherein the bin is arranged at the side part of the furnace body, a primary combustion chamber is arranged at the lower part of the bin, and an air inlet channel communicated with the outside is arranged in the primary combustion chamber; the bin comprises a bin at the upper part and a combustion frame at the lower part, the upper end of the bin is opened, and the lower end of the bin is connected with the combustion frame; the combustion frame is suspended in the primary combustion chamber; the furnace body is provided with a furnace chamber communicated with the primary combustion chamber, and the upper part of the furnace chamber is connected with a chimney. According to the biomass combustion furnace, electric power blowing is not needed, and external air is pumped into the primary combustion chamber and the secondary combustion chamber by the air inlet duct by fully utilizing the suction force of the chimney, so that complete combustion of biomass fuel is ensured. Can save energy, has wide application range and has the advantages of economy and environmental protection.

Description

Non-electric drive biomass combustion furnace

Technical Field

The invention relates to a non-electric driving biomass combustion furnace, and belongs to the technical field of biomass combustion equipment.

Background

The existing energy sources are mainly coal, petroleum, natural gas and the like, and the energy sources are increasingly scarce along with the massive consumption of the energy sources. In the case of shortage of energy, new energy is urgently needed to replace coal, oil, natural gas, etc. The new energy sources comprise wind energy, solar energy, biomass and the like, wherein the biomass energy sources mainly comprise crop straws and the like, and the crop straws have the advantages of large quantity, low cost and the like and are widely applied. Crop straws are processed into granular biomass fuel which is combusted in a combustion furnace to provide energy. When the biomass fuel is combusted, the requirement on oxygen supply is high, and the complete combustion of the biomass fuel in the combustion furnace can be ensured only under the condition of sufficient oxygen supply. The existing biomass combustion furnaces in the prior art are all forced air blasting in the combustion furnaces through electric-driven air blowers so as to ensure sufficient oxygen supply. On one hand, the biomass combustion furnace adopting electric blasting necessarily has the requirement on a power supply, so that the applicable place is greatly limited; on the other hand, the continuous use of electric power blast brings about a large electric power consumption, which increases the use cost.

Disclosure of Invention

The invention aims to provide a non-electric driving biomass combustion furnace, which solves the problems, and the specific scheme is as follows:

the non-electric driving biomass combustion furnace comprises a bin and a furnace body, wherein the bin is arranged at the side part of the furnace body, a primary combustion chamber is arranged at the lower part of the bin, and an air inlet channel communicated with the outside is arranged in the primary combustion chamber; the bin comprises a bin at the upper part and a combustion frame at the lower part, the upper end of the bin is opened, and the lower end of the bin is connected with the combustion frame; the combustion frame is suspended in the primary combustion chamber; the furnace body is provided with a furnace chamber communicated with the primary combustion chamber, and the upper part of the furnace chamber is connected with a chimney.

Further, the combustion frame is of a metal frame structure.

Furthermore, a space is reserved between the side part or the bottom of the combustion frame and the primary combustion chamber, and the space is communicated with the air inlet duct and the furnace chamber.

Further, a secondary combustion chamber is arranged at the lower part of the primary combustion chamber, and the secondary combustion chamber is communicated with the air inlet duct and the primary combustion chamber.

Further, the air inlet duct is located at the side part of the feed box.

Further, a transparent fire viewing bin is connected between the furnace chamber and the chimney.

Further, the transparent fire viewing bin is cylindrical or prismatic in shape.

Further, a secondary oxygen inlet is reserved at the joint of the transparent fire observation bin and the furnace chamber.

Furthermore, a third oxygen inlet is reserved at the joint of the transparent fire observation bin and the chimney.

Further, an ash settling chamber is arranged below the furnace chamber.

The biomass combustion furnace has the advantages that the biomass combustion furnace does not need to adopt electric power for blowing, and external air is pumped into the primary combustion chamber and the secondary combustion chamber by the air inlet duct by fully utilizing the suction force of the chimney, so that complete combustion of biomass fuel is ensured.

The draft of the chimney is determined by the height of the chimney, so that the application range of the biomass combustion furnace has a great limit on the height of the chimney, and the draft is limited. The traditional combustion furnace structure adopts electric forced air blowing, so that the influence of the air duct resistance on the air flow is not needed to be considered in the design of the air inlet duct. When the air supply is performed by only using limited chimney draft, the resistance directly determines whether the air supply quantity can meet the combustion requirement.

In the traditional combustion furnace, fuel directly enters a combustion chamber for combustion, and on one hand, a large amount of biomass fuel enters the combustion chamber, so that an airflow channel is necessarily blocked, and the air inlet quantity is influenced; on the other hand, when biomass fuel is directly combusted in the combustion chamber, the effective contact area between the biomass fuel and air is small, and sufficient combustion is difficult to ensure.

Aiming at the problems, the combustion frame structure suspended in the combustion chamber is adopted as a combustion chamber of biomass fuel, and the combustion chamber is provided with enough effective space as an air circulation channel, so that the chimney can generate enough suction force for external air; moreover, the combustion frame structure can ensure that the biomass fuel and the air flow have a plurality of contact surfaces. The combination of the designs can ensure the full combustion of biomass fuel.

The burning flame enters the transparent flame observing bin through the furnace chamber, so that the flame condition can be intuitively observed.

The combustion chamber is divided into a first-stage combustion chamber and a second-stage combustion chamber, so that fine fuel mixed in furnace ash after the first-stage combustion is completely combusted in the combustion chamber, and excessive nitrogen oxides are prevented from being generated.

The secondary oxygen inlet and the tertiary oxygen inlet are arranged at the upper and lower positions of the fire observation bin, so that the flue gas can be subjected to catalytic combustion for multiple times, and the combustion is more sufficient and the emission is more environment-friendly. Meanwhile, the smoke in the fire observing bin is guaranteed to be close to zero, flowing flames are better seen, and the fire observing purpose is achieved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The non-electric driving biomass combustion furnace shown in fig. 1 comprises a bin and a furnace body, wherein the bin is arranged at the side part of the furnace body, a primary combustion chamber 4 is arranged at the lower part of the bin, and an air inlet channel communicated with the outside is arranged in the primary combustion chamber 4; the bin comprises a bin 1 positioned at the upper part and a combustion frame 3 positioned at the lower part, the upper end of the bin 1 is provided with an opening, and the opening is provided with a bin cover; the lower end of the feed box 1 is connected with a combustion frame 3; the combustion frame 3 is suspended in the primary combustion chamber 4; the furnace body is provided with a furnace chamber 9 communicated with the primary combustion chamber 4, and the upper part of the furnace chamber 9 is connected with a chimney 14.

The combustion frame 3 is of a metal frame structure. A space is reserved between the side part or the bottom of the combustion frame 3 and the primary combustion chamber 4, and the space is communicated with the air inlet duct and the furnace chamber 9. The lower part of the primary combustion chamber 4 is provided with a secondary combustion chamber 5, and the secondary combustion chamber 5 is communicated with the air inlet duct and the primary combustion chamber 4. The air inlet channel is located at the side part of the material box 1, and can be selectively arranged at the rear side or the left side and the right side of the material box 1, in this embodiment, the air inlet channel is arranged at the rear side of the material box 1, the material box 1 is directly communicated with the secondary combustion chamber 5, a plurality of air inlets are formed in the side part and the bottom of the primary combustion chamber 4 arranged at the upper part of the secondary combustion chamber 5, and the primary combustion chamber 4 is communicated with the secondary combustion chamber 5 through the air inlets. A transparent fire observing bin 12 is connected between the furnace chamber 9 and the chimney 14. The transparent fire observation bin 12 is cylindrical or prismatic in shape. The junction of the transparent fire observing bin 12 and the furnace chamber 9 is provided with a secondary oxygen inlet 10. The joint of the transparent fire observation bin 12 and the chimney 14 is provided with a tertiary oxygen inlet 13. An ash settling chamber 77 is arranged below the furnace chamber 9.

The material box 1, the combustion frame 3, the primary combustion chamber 4, the secondary combustion chamber 5, the transparent fire observation bin 12 and the chimney 14 in the embodiment all adopt independently detachable structures, so that the material box is convenient to transport and assemble.

The biomass combustion furnace of the embodiment does not need to use electric power for blowing, but fully utilizes the suction force of the chimney 14 to pump the external air into the primary combustion chamber 4 and the secondary combustion chamber 5 through the air inlet duct so as to ensure complete combustion of biomass fuel.

When the biomass fuel ignition device is used, the ignition fine soft biomass materials are placed into the combustion frame 3, after the biomass fuel is ignited, the biomass fuel is gradually injected from the feed box 1, and as the temperature of the air at the bottom of the combustion chamber is increased, the density is reduced, the hot air is discharged out of the furnace along the furnace chamber 9, the fire observing bin 12 and the chimney 14 under the pressure of normal atmospheric pressure in the feed bin 1. And after the biomass fuel in the combustion frame 3 is completely burned, filling the feed box 1 with the biomass fuel, and feeding the feed box cover. Air enters the secondary combustion chamber 5 from three sides of the front, the back and the left of the secondary combustion chamber 5 from the rear air inlet channel of the feed box 1 respectively to be preheated to reach the primary combustion chamber 4 for mixed combustion with biomass. Flame is sprayed into the furnace chamber 9 through the combustion port of the furnace chamber 9 under the negative pressure effect of the chimney 14, the flame is catalytically combusted at the secondary oxygen inlet 10 when passing through the furnace chamber 9 and entering the fire observation bin 12, the combustible gas which is not completely combusted is subjected to secondary combustion, the flame is catalytically combusted at the tertiary oxygen inlet 13 when entering the chimney 14 after passing through the fire observation bin 12, and the combustible gas which is not completely combusted is subjected to tertiary combustion, so that the biomass fuel is ensured to be completely combusted, and the environmental protection requirement of smoke-free and harmless emission is met.

Claims

1. The utility model provides a non-electricity drive living beings fires burning furnace, includes feed bin and furnace body, its characterized in that: the bin is arranged at the side part of the furnace body, a primary combustion chamber is arranged at the lower part of the bin, and an air inlet channel communicated with the outside is arranged in the primary combustion chamber; the bin comprises a bin at the upper part and a combustion frame at the lower part, the upper end of the bin is opened, and the lower end of the bin is connected with the combustion frame; the combustion frame is suspended in the primary combustion chamber; the furnace body is provided with a furnace chamber communicated with the primary combustion chamber, and the upper part of the furnace chamber is connected with a chimney;

a space is reserved between the side part or the bottom of the combustion frame and the primary combustion chamber, and the space is communicated with the air inlet duct and the furnace chamber;

the lower part of the primary combustion chamber is provided with a secondary combustion chamber which is communicated with the air inlet duct and the primary combustion chamber.

2. A non-electrically driven biomass burner according to claim 1, wherein: the combustion frame is of a metal frame structure.

3. A non-electrically driven biomass burner according to claim 1, wherein: the air inlet channel is positioned at the side part of the feed box.

4. A non-electrically driven biomass burner according to any one of claims 1 to 3, characterized in that: a transparent fire viewing bin is connected between the furnace chamber and the chimney.

5. The non-electrically driven biomass burner of claim 4, wherein: the transparent fire observation bin is cylindrical or prismatic in shape.

6. The non-electrically driven biomass burner of claim 4, wherein: and a secondary oxygen inlet is reserved at the joint of the transparent fire observation bin and the furnace chamber.

7. The non-electrically driven biomass burner of claim 4, wherein: and a third oxygen inlet is reserved at the joint of the transparent fire observation bin and the chimney.

8. The non-electrically driven biomass burner of claim 4, wherein: an ash settling chamber is arranged below the furnace chamber.