CN210241545U - Biomass combustion boiler - Google Patents
Biomass combustion boiler Download PDFInfo
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- CN210241545U CN210241545U CN201921217260.9U CN201921217260U CN210241545U CN 210241545 U CN210241545 U CN 210241545U CN 201921217260 U CN201921217260 U CN 201921217260U CN 210241545 U CN210241545 U CN 210241545U
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Abstract
The utility model discloses a biomass combustion boiler belongs to and relates to boiler technical field. The furnace body is internally provided with a combustion chamber; the grate firing furnace grate is arranged at the lower part in the furnace body and is positioned below the lower opening of the combustion chamber; a plurality of gas caps are uniformly distributed on one side of the grate firing layer facing the combustion chamber, the gas caps are communicated with a gas chamber in the grate firing layer, and the lower part of the grate firing layer is rotatably connected with the furnace body; the rotating mechanism is arranged on one side of the grate firing grate and is used for driving the grate firing grate to rotate; the air supply device is positioned on one side of the furnace body and communicated with the air chamber in the grate-fired furnace; and one end of the secondary air pipe is communicated with the air supply device, the other end of the secondary air pipe is arranged at the joint of the combustion chamber and the grate layer combustion chamber, and annular air inlet can be formed along the joint. The utility model discloses can be through the secondary air inlet for the grate air supply effect is better, plays the auxiliary seal effect, reduces the inside non-regional deposition of ash of row of boiler, influences equipment operation effect.
Description
Technical Field
The utility model relates to the technical field of boilers, especially a biomass combustion boiler.
Background
The fire grate is a part used for stacking and effectively burning fuel in combustion equipment, the traditional fire grate bears blocky fuel, a strip-shaped grid is usually arranged on the fire grate to conveniently discharge coal slag and provide oxygen for fuel combustion, and the traditional fire grate cannot bear powder fuel or biomass energy.
Patent CN 103542400B discloses a combustion apparatus for combusting biomass fuel and a combustion method of the apparatus. The biomass fuel combustion equipment comprises a combustion furnace and an air supply device, wherein a rotatable grate and a grate rotation driving device are arranged in the combustion furnace, and the grate comprises a circular rotating bottom plate, a plurality of groups of hood groups arranged above the rotating bottom plate, a refractory mud layer laid on the hoods, an ash falling pipe connected to the circle center of the rotating bottom plate and a sealing plate fixed on the outer edge of the rotating bottom plate.
However, the rotary air-cooled grate system can uniformly distribute powder above the grate to burn to a certain extent, but has the following disadvantages: 1. only one time of air supply is carried out, if the air blown in by the excessive air supply pressure blows out the originally suspended and combusted biomass or ash from gaps between the grate and the combustion chamber, or the air overflows from the gaps, so that ash deposition is formed in the equipment or the effect of air blowing in is reduced. 2. The fire grate is only provided with a refractory mud layer, so that a good heat insulation effect cannot be achieved, and a large amount of heat is lost from the fire grate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide a biomass combustion boiler, can pass through the secondary air for the grate air supply effect is better, plays supplementary sealed effect, reduces the inside non-ash discharge area deposition of boiler, influences equipment operation effect.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a biomass combustion boiler, which is characterized in that,
the furnace body is internally provided with a combustion chamber;
the grate firing furnace grate is arranged at the lower part in the furnace body and is positioned below the lower opening of the combustion chamber; a plurality of gas caps are uniformly distributed on one side of the grate firing layer facing the combustion chamber, the gas caps are communicated with a gas chamber in the grate firing layer, and the lower part of the grate firing layer is rotatably connected with the furnace body;
the rotating mechanism is arranged on one side of the grate firing grate and is used for driving the grate firing grate to rotate;
the air supply device is positioned on one side of the furnace body and communicated with the air chamber in the grate-fired furnace; and
one end of the secondary air pipe is communicated with the air supply device, the other end of the secondary air pipe is arranged at the joint of the combustion chamber and the grate layer combustion chamber, and annular air inlet can be formed along the joint.
Preferably, the grate firing furnace also comprises a furnace grate body, a heat-resistant material layer, a heat-insulating layer and an ash discharge pipe; the fire grate body is internally provided with a sealed air chamber, the upper end face of the fire grate body is provided with the heat-resistant material layer, and the heat-insulating layer is arranged between the heat-resistant material layer and the upper end face of the fire grate body; one side of the heat-resistant material layer facing the combustion chamber forms a funnel-shaped structure, and the diameter of the funnel-shaped structure is larger than that of the lower opening of the combustion chamber; the ash discharge pipe is arranged in the middle of the fire grate body, one end of the ash discharge pipe is positioned at the bottom of the funnel-shaped structure of the heat-resistant material layer, and the other end of the ash discharge pipe penetrates through the fire grate body and is positioned at the bottom of the furnace body; the air caps are uniformly distributed on the upper end face of the fire grate body, one end of each air cap is positioned above the heat-resistant material layer, and the other end of each air cap is positioned below the upper end face of the fire grate body and in the air chamber.
Preferably, the funnel-shaped structure of the layer of heat resistant material is inclined at an angle of 10-45 ° to the horizontal.
Preferably, the upper end surface of the fire grate body is further provided with a horizontal support plate along the edge of the upper end surface, one end, relatively far away from the center of the fire grate body, of the horizontal support plate is provided with a plurality of first annular partition plates, a second annular partition plate is arranged between two adjacent first annular partition plates of the furnace body, and the first annular partition plates and the second annular partition plates form a zigzag channel.
Preferably, one end of the secondary air pipe is arranged on a second annular partition plate close to the combustion chamber.
Preferably, one end of the heat-resistant material layer is disposed above the horizontal support plate.
Preferably, an annular sealing plate is arranged at the lower opening of the combustion chamber along the circumference of the lower opening, and one end of the heat-resistant material layer is attached to and flush with a first annular partition plate close to the center of the fire grate body; the annular closing plate, the first annular partition plate and the second annular partition plate form the zigzag channel.
Preferably, the secondary air pipe is provided with a valve.
Preferably, the upper part of the furnace body is connected with a steam generating component.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
1. the utility model discloses a set up the secondary air pipe in the junction of combustion chamber and layer combustion grate for can form annular air inlet along the junction of combustion chamber and layer combustion grate, the atmospheric pressure of combustion chamber and junction is balanced like this, and high-pressure gas can not discharge from the junction of combustion chamber and layer combustion grate, makes the living beings or the ashes of suspension burning can not blow off from the gap or the junction between layer combustion grate, the combustion chamber simultaneously; ensuring normal operation of equipment; and energy consumption is saved.
2. The utility model discloses a set up the grate and set up can fine prevention combustion chamber heat loss, can fine protection grate work simultaneously, heat-resisting material layer forms the infundibulate structure and can be in isolated combustion chamber with the recovery of concentrating to the lime-ash, and the clearance is convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the attached drawing, 1-furnace body, 2-layer combustion furnace grate, 21-furnace grate body, 22-gas cap, 23-heat-resistant material layer, 24-heat-insulating layer, 25-ash discharge pipe, 26-first annular partition plate, 3-rotating mechanism, 4-air supply device, 5-secondary air pipe, 51-valve, 6-annular seal plate, 7-second annular partition plate and 8-zigzag channel.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, in the embodiment, a biomass combustion boiler is disclosed, and further, a steam boiler for performing combustion treatment on biomass such as wood and generating steam is disclosed, and the whole steam boiler can be divided into a combustion part, a steam generation part, a feeding part and an air intake and exhaust gas treatment part. Wherein, burning boiler or burning part are that this scheme protects the place, and other parts can refer to prior art and realize.
The combustion boiler and the steam generating part can be of a combined structure, and the steam generating part is arranged at the upper end of the combustion boiler. The combustion boiler specifically comprises a boiler body 1, a grate firing layer 2, a rotating mechanism 3, an air supply device 4 and a secondary air pipe 5.
The installation of furnace body 1 sets up on ground, is provided with ash discharge groove and the ash discharge device who is used for arranging the ash under furnace body 1, and the ash discharge device specifically can adopt ash discharge dolly and drive structure, and the ash discharge dolly is used for collecting 1 discharge slag of furnace body, and drive structure is used for pulling out the ash dolly from ash discharge groove. The furnace body 1 is internally provided with a combustion chamber which is built by refractory bricks.
The grate-fired furnace 2 is arranged at the lower part in the furnace body 1 and is positioned below the lower opening of the combustion chamber; a plurality of air caps 22 are uniformly distributed on one side of the grate 2 facing the combustion chamber, the air caps 22 are communicated with an air chamber in the grate 2, and the lower part of the grate 2 is rotatably connected with the furnace body 1. The rotating mechanism 3 is arranged on one side of the grate 2 and is used for driving the grate 2 to rotate. The air supply device 4 is positioned at one side of the furnace body 1 and is communicated with the air chamber in the grate-fired furnace 2. Therefore, high-pressure air is input into the grate 2 through the air supply device 4, the grate 2 rotates simultaneously, and the high-pressure air is discharged from a plurality of air outlets on the side surface of the upper end of the air cap 22, so that the biomass is subjected to suspension combustion in the combustion chamber.
One end of the secondary air pipe 5 is communicated with the air supply device 4, and the other end is arranged at the joint of the combustion chamber and the grate-fired layer 2 and can form annular air inlet along the joint; meanwhile, a valve 51 is arranged on the secondary air pipe 5. The biomass or ash which is subjected to suspension combustion due to the difference of internal pressure and external pressure is prevented from being blown out from the joint between the grate 2 and the combustion chamber by forming annular air inlet. The annular air inlet can be realized by arranging an annular air inlet pipe at the joint of the combustion chamber and the grate-fired furnace 2 or arranging an annular air inlet groove or an air inlet at the joint of the combustion chamber and the grate-fired furnace 2.
Specifically, the grate 2 further comprises a grate body 21, a heat-resistant material layer 23, a heat-insulating layer 24 and an ash discharge pipe 25. The interior of the fire grate body 21 is a sealed air chamber, the upper end face of the fire grate body 21 is provided with the heat-resistant material layer 23, and the heat-insulating layer 24 is arranged between the heat-resistant material layer 23 and the upper end face of the fire grate body 21. The side of the heat-resistant material layer 23 facing the combustion chamber is formed in a funnel-shaped configuration and has a diameter larger than that of the lower opening of the combustion chamber. The ash discharge pipe 25 is arranged in the middle of the fire grate body 21, one end of the ash discharge pipe 25 is positioned at the bottom of the funnel-shaped structure of the heat-resisting material layer 23, and the other end of the ash discharge pipe passes through the fire grate body 21 and is positioned at the bottom of the furnace body 1. The air caps 22 are uniformly distributed on the upper end surface of the fire grate body 21, one end of each air cap 22 is positioned above the heat-resistant material layer 23, and the other end of each air cap 22 is positioned below the upper end surface of the fire grate body 21 and is positioned in the air chamber. The upper end surface of the fire grate body 21 is also provided with a horizontal support plate along the edge thereof, one end of the horizontal support plate relatively far away from the center of the fire grate body 21 is provided with a plurality of first annular partition plates 26, and a second annular partition plate 7 is arranged between two adjacent first annular partition plates 26 of the furnace body 1. An annular sealing plate 6 is arranged at the lower opening of the combustion chamber along the circumference of the lower opening. One end of the layer of refractory material 23 is positioned above the horizontal support plate and is flush with and flush with a first annular partition 26 near the center of the grate body 21. The annular closing plate 6, the first annular partition 26 and the second annular partition 7 form said zigzag-shaped passage 8. Here, the heat-resistant material layer 23 is a refractory mortar material or a refractory brick material.
As a technical preference, the funnel-shaped structure of the heat-resistant material layer 23 is inclined at an angle of 20 ° to the horizontal plane. The funnel-shaped structural layer can be smooth and have a larger angle, so that dust collection is facilitated, for example, the inclined angle of 40 degrees is set.
In order to better realize the function of the secondary air pipe 5, one end of the secondary air pipe 5 is arranged on a second annular clapboard 7 which is close to the combustion chamber. Therefore, the secondary air pipe 5 can form annular air outlet in the zigzag channel 8, balance the internal and external pressure, play a role in auxiliary sealing and better prevent heat loss.
The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.
Claims (9)
1. A biomass combustion boiler is characterized in that:
the furnace body is internally provided with a combustion chamber;
the grate firing furnace grate is arranged at the lower part in the furnace body and is positioned below the lower opening of the combustion chamber; a plurality of gas caps are uniformly distributed on one side of the grate firing layer facing the combustion chamber, the gas caps are communicated with a gas chamber in the grate firing layer, and the lower part of the grate firing layer is rotatably connected with the furnace body;
the rotating mechanism is arranged on one side of the grate firing grate and is used for driving the grate firing grate to rotate;
the air supply device is positioned on one side of the furnace body and communicated with the air chamber in the grate-fired furnace; and
one end of the secondary air pipe is communicated with the air supply device, the other end of the secondary air pipe is arranged at the joint of the combustion chamber and the grate layer combustion chamber, and annular air inlet can be formed along the joint.
2. A biomass burning boiler according to claim 1, characterized in that: the grate firing furnace also comprises a furnace grate body, a heat-resistant material layer, a heat-insulating layer and an ash discharge pipe; the fire grate body is internally provided with a sealed air chamber, the upper end face of the fire grate body is provided with the heat-resistant material layer, and the heat-insulating layer is arranged between the heat-resistant material layer and the upper end face of the fire grate body; one side of the heat-resistant material layer facing the combustion chamber forms a funnel-shaped structure, and the diameter of the funnel-shaped structure is larger than that of the lower opening of the combustion chamber; the ash discharge pipe is arranged in the middle of the fire grate body, one end of the ash discharge pipe is positioned at the bottom of the funnel-shaped structure of the heat-resistant material layer, and the other end of the ash discharge pipe penetrates through the fire grate body and is positioned at the bottom of the furnace body; the air caps are uniformly distributed on the upper end face of the fire grate body, one end of each air cap is positioned above the heat-resistant material layer, and the other end of each air cap is positioned below the upper end face of the fire grate body and in the air chamber.
3. A biomass burning boiler according to claim 2, characterized in that: the funnel-shaped structure of the layer of heat resistant material is inclined at an angle of 10-45 deg. to the horizontal.
4. A biomass burning boiler according to claim 2, characterized in that: the furnace body is characterized in that a horizontal support plate is further arranged on the upper end face of the furnace body along the edge of the upper end face, one end, far away from the center of the furnace body, of the horizontal support plate is provided with a plurality of first annular partition plates, a second annular partition plate is arranged between every two adjacent first annular partition plates of the furnace body, and the first annular partition plates and the second annular partition plates form a zigzag channel.
5. A biomass burning boiler according to claim 1, characterized in that: one end of the secondary air pipe is arranged on a second annular partition plate close to the combustion chamber.
6. A biomass combustion boiler according to claim 4, characterized in that: one end of the heat-resistant material layer is arranged above the horizontal support plate.
7. A biomass combustion boiler according to claim 6, characterized in that: an annular sealing plate is arranged at the lower opening of the combustion chamber along the circumference of the lower opening, and one end of the heat-resistant material layer is attached to and flush with a first annular partition plate close to the center of the fire grate body; the annular closing plate, the first annular partition plate and the second annular partition plate form the zigzag channel.
8. A biomass burning boiler according to claim 1, characterized in that: and a valve is arranged on the secondary air pipe.
9. A biomass burning boiler according to claim 1, characterized in that: the upper part of the furnace body is connected with a steam generating component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921217260.9U CN210241545U (en) | 2019-07-30 | 2019-07-30 | Biomass combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921217260.9U CN210241545U (en) | 2019-07-30 | 2019-07-30 | Biomass combustion boiler |
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| Publication Number | Publication Date |
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| CN210241545U true CN210241545U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921217260.9U Active CN210241545U (en) | 2019-07-30 | 2019-07-30 | Biomass combustion boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050193A (en) * | 2020-08-27 | 2020-12-08 | 衡阳衡锅锅炉有限公司 | Biomass burner |
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- 2019-07-30 CN CN201921217260.9U patent/CN210241545U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050193A (en) * | 2020-08-27 | 2020-12-08 | 衡阳衡锅锅炉有限公司 | Biomass burner |
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