CN221005512U - Organic heat carrier furnace for burning biomass - Google Patents
Organic heat carrier furnace for burning biomass Download PDFInfo
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- CN221005512U CN221005512U CN202322549001.9U CN202322549001U CN221005512U CN 221005512 U CN221005512 U CN 221005512U CN 202322549001 U CN202322549001 U CN 202322549001U CN 221005512 U CN221005512 U CN 221005512U
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- Prior art keywords
- combustion chamber
- boiler barrel
- biomass
- boiler
- heat carrier
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- 239000002028 Biomass Substances 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 60
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 230000005855 radiation Effects 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003546 flue gas Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 238000004321 preservation Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The utility model relates to the technical field of boilers, in particular to an organic heat carrier furnace for combusting biomass, which comprises a boiler barrel, wherein a combustion chamber is arranged below the boiler barrel, a chain grate is arranged at the bottom of the combustion chamber, a front arch is arranged at the front end of the combustion chamber, a rear arch is arranged at the rear end of the combustion chamber, a plurality of radiation heat-receiving pipes are transversely arranged on the inner wall of the boiler barrel, a plurality of convection heat-receiving pipes are longitudinally arranged in the boiler barrel, a smoke outlet is arranged on one side of the top of the boiler barrel, an upper collecting box is arranged on the upper part of the boiler barrel, a lower collecting box is arranged on the lower part of the boiler barrel, a transverse secondary air distribution pipe is arranged above the inner part of the combustion chamber, and a plurality of secondary air openings are arranged at the bottom of the secondary air distribution pipe. In the biomass-fired organic heat carrier furnace, the radiation heat receiving pipe and the convection heat receiving pipe can ensure that the flue gas and the medium exchange heat fully, ensure the heat exchange fully and improve the working efficiency of the boiler. The air inlet quantity inside the combustion chamber can be controlled through the secondary air distribution pipe, so that the full combustion of internal materials is ensured, and the combustion efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of boilers, in particular to an organic heat carrier furnace for combusting biomass.
Background
The biomass fuel boiler adopts high-density compression molding biomass as the fuel of the boiler, and the compression compaction of the fuel limits the overflow speed of volatile matters, so the combustion of the biomass fuel is mainly controlled by the following conditions: a certain temperature; a certain amount of air (oxygen); the degree of mixing of fuel with air (oxygen); the combustibles in the fuel and the oxygen in the air undergo a severe chemical reaction time. Since the ignition point of the biomass fuel is 250 ℃, the temperature increase thereof is supplied by ignition heat. The combustion process of biomass fuel is a process in which the combustible components in the fuel are vigorously combined with oxygen in the air and emit heat. Thus, the oxygen supply amount determines the combustion reaction process, and the combustion reaction can be controlled well by controlling the oxygen supply amount.
In addition, the biomass fuel has certain moisture, and is compression-molded, so that the compression of the biomass fuel is compact, the volatile component overflow speed is limited, yellow and bright flame is formed and is difficult to ignite and burn, and black smoke is easy to emit. Therefore, the structure of the running life and industrial boiler is not suitable for directly using biomass granular fuel, and if the biomass granular fuel is directly used without modification, the boiler can emit black smoke, has low efficiency, has dust pollution and the like. Therefore, the biomass pellet fuel burning boiler needs to be additionally provided with a special air supply facility, and the air inlet quantity of the boiler can be adjusted under the requirement of fully ensuring the oxygen supply quantity of biomass pellet burning.
In the prior art, if the air quantity is too small, the combustible components cannot be fully combusted, so that incomplete combustion is lost, if the air quantity is too large, the temperature of a combustion chamber can be reduced, the degree of complete combustion is affected, in addition, the flue gas quantity can be large, the thermal efficiency of a boiler is reduced, the fuel combustion has a certain speed, and the maximum combustion degree is reached, so that the combustion completely needs a certain time. The greatest problem of combustion adjustment is to maintain the residence time of combustion in the furnace as much as possible, and to have enough combustion time to achieve complete combustion.
Disclosure of utility model
The utility model aims to provide an organic heat carrier furnace for combusting biomass, which solves the problems that if the air quantity is too small, combustible components cannot be fully combusted, incomplete combustion is lost, if the air quantity is too large, the temperature of a combustion chamber is reduced, the complete combustion degree is affected, the flue gas quantity is large, and the thermal efficiency of a boiler is reduced.
In order to achieve the above purpose, the utility model provides an organic heat carrier furnace for combusting biomass, which comprises a boiler barrel, wherein a combustion chamber is arranged below the boiler barrel, a chain grate is arranged at the bottom of the combustion chamber, a front arch is arranged at the front end of the combustion chamber, a rear arch is arranged at the rear end of the combustion chamber, a plurality of radiation heat-receiving pipes are transversely arranged on the inner wall of the boiler barrel, a plurality of convection heat-receiving pipes are longitudinally arranged in the boiler barrel, a smoke outlet is formed in one side of the top of the boiler barrel, an upper header is arranged at the upper part of the boiler barrel, a lower header is arranged at the lower part of the boiler barrel, a transverse secondary air distribution pipe is arranged above the interior of the combustion chamber, and a plurality of secondary air openings are arranged at the bottom of the secondary air distribution pipe.
Preferably, a feeding port is formed in the top of one end of the chain grate, and an ash falling port is formed in the bottom of one end of the chain grate.
Preferably, a slag hole is formed in the bottom of one end of the combustion chamber, and a fire pulling door is arranged on one side of the combustion chamber.
Preferably, an insulating layer is arranged on the outer wall of the boiler barrel.
Preferably, a smoke folding wall is arranged inside the boiler barrel and between the convection heating pipes.
Preferably, the top of the boiler barrel is provided with an ash removal door.
Preferably, an oil outlet is arranged at the outer end of the upper header, and an oil return port is arranged at the outer end of the lower header.
Compared with the prior art, the utility model has the beneficial effects that:
1. In the biomass-fired organic heat carrier furnace, the radiation heat receiving pipe and the convection heat receiving pipe arranged in the biomass-fired organic heat carrier furnace can ensure that the flue gas and the medium exchange heat fully, ensure the heat exchange fully and improve the working efficiency of the boiler.
2. In this fire organic heat carrier stove of living beings, can control the inside intake of combustion chamber through overgrate air distribution pipe to guarantee the abundant burning of inside material, improve combustion efficiency, guarantee the heat of material and fully release.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic top view of the present utility model;
Fig. 3 is a schematic side view of the present utility model.
The meaning of each reference sign in the figure is:
1. A drum; 11. a heat preservation layer; 12. a smoke folding wall; 13. a smoke outlet; 14. a radiation heat receiving pipe; 15. an ash removal door; 16. an oil return port; 17. an oil outlet; 18. convection heat receiving tubes; 2. a chain grate; 21. a feeding port; 22. an ash falling port; 3. a combustion chamber; 31. a front arch; 32. a rear arch; 33. a slag outlet; 34. pulling out the fire door; 35. a secondary air port; 4. a lower header; 5. a header is arranged; 6. secondary air distribution pipes; 7. an escalator.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides an organic heat carrier furnace for combusting biomass, which is shown in fig. 1-3, and comprises a boiler barrel 1, wherein an escalator 7 is arranged at the outer side of the boiler barrel 1 and used for daily maintenance and detection, a combustion chamber 3 is arranged below the boiler barrel 1 and used for generating smoke, a chain grate 2 is arranged at the bottom of the combustion chamber 3 and used for material combustion, a front arch 31 is arranged at the front end of the combustion chamber 3, a rear arch 32 is arranged at the rear end of the combustion chamber 3, the smoke moves upwards along the channels of the front arch 31 and the rear arch 32, a plurality of radiation heat-receiving pipes 14 are transversely arranged on the inner wall of the boiler barrel 1, and the smoke exchanges heat with a medium in the radiation heat-receiving pipes 14 after passing through the outside of the radiation heat-receiving pipes 14 so as to ensure heat exchange;
The inside of the boiler barrel 1 is longitudinally provided with a plurality of convection heat-receiving pipes 18, flue gas exchanges heat with medium in the boiler barrel 1 after passing through the convection heat-receiving pipes 18, one side of the top of the boiler barrel 1 is provided with a flue gas outlet 13 for discharging flue gas, the upper part of the boiler barrel 1 is provided with an upper header 5, the lower part of the boiler barrel 1 is provided with a lower header 4 which is respectively used for storing medium, a transverse secondary air distribution pipe 6 is arranged above the inside of the combustion chamber 3, the bottom of the secondary air distribution pipe 6 is provided with a plurality of secondary air outlets 35 for introducing a certain amount of air into the combustion chamber 3, so that secondary air is an important factor in free space gas phase combustion optimization, and the secondary air is fully combusted through hedging and stirring so as to realize full burnout of volatile matters and carried solid particles. The overgrate air arrangement is particularly important for biomass fuels with high volatile content. The proportion of the secondary air, the speed, the flow direction and the arrangement position of the secondary air have great influence on reducing the heat loss of incomplete combustion and stabilizing the combustion layer on the fire grate. For fire grate combustion, the total excess air system of most biomass fuels is 30%, the ratio of primary air to secondary air is generally 4:6 and 5:5, and the secondary air is generally arranged in a bidirectional opposite-impact manner by adopting a downward inclination angle, so that strong disturbance of jet flow is formed, and combustion of a fire facing surface is enhanced.
In this embodiment, a feeding port 21 is disposed at the top of one end of the chain grate 2 for feeding, an ash dropping port 22 is disposed at the bottom of one end of the chain grate 2 for dropping the burned dust, and a primary air inlet is disposed at the outer side of the chain grate 2 for air intake during operation of the chain grate 2.
Specifically, a slag hole 33 is formed in the bottom of one end of the combustion chamber 3 and used for slag after combustion, and a fire pulling door 34 is arranged on one side of the combustion chamber 3 and used for opening and pulling fire.
Further, the heat preservation layer 11 is arranged on the outer wall of the boiler barrel 1, so that a good heat preservation effect is achieved.
Further, a smoke folding wall 12 is arranged in the boiler barrel 1 between the convection heat-receiving pipes 18 and used for folding back smoke, so that the stroke of the smoke is ensured to be increased, and the time for heat exchange of the smoke is prolonged.
Further, an ash removal door 15 is arranged at the top of the boiler barrel 1 and is used for removing ash in the boiler barrel 1.
Further, an oil outlet 17 is arranged at the outer end of the upper header 5, and an oil return port 16 is arranged at the outer end of the lower header 4 for medium in and out.
When the biomass-fired organic heat carrier furnace is used, firstly, materials are fed from a feed port 21, combustion is realized on a chain grate 2 through an air blower and induced draft fan, the burnt fuel rotates at constant and uniform speed through the chain grate 2, the fuel combusts in a combustion chamber 3 (a hearth), generated high-temperature flue gas rises from the combustion chamber 3, upwards along the part, close to a radiation heat receiving pipe 14, of the inside of the boiler barrel 1, turns to the outside from the top of the boiler barrel 1 downwards, enters between front serpentine-shaped convection heat receiving pipes 18, downwards along a gap between the convection heat receiving pipes 18, upwards reaches the bottom 180-degree turn of the convection heat receiving pipes 18, enters the outside of the rear convection heat receiving pipes 18, upwards along the gap between the convection heat receiving pipes 18, is discharged to an upper smoke outlet 13, and a medium requiring heat exchange enters a lower header 4 through an oil return port 16, flows along the convection heat receiving pipes 18 and the radiation heat receiving pipes 14, enters the upper header 5 after heat exchange, and is discharged from an oil outlet 17.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. An organic heat carrier furnace for burning biomass, comprising a drum (1), characterized in that: the boiler is characterized in that a combustion chamber (3) is arranged below the boiler barrel (1), a chain grate (2) is arranged at the bottom of the combustion chamber (3), a front arch (31) is arranged at the front end of the combustion chamber (3), a rear arch (32) is arranged at the rear end of the combustion chamber (3), a plurality of radiation heat-receiving pipes (14) are transversely arranged on the inner wall of the boiler barrel (1), a plurality of convection heat-receiving pipes (18) are longitudinally arranged inside the boiler barrel (1), a smoke outlet (13) is formed in one side of the top of the boiler barrel (1), an upper header (5) is arranged on the upper portion of the boiler barrel (1), a lower header (4) is arranged at the lower portion of the boiler barrel (1), and a plurality of secondary air distribution pipes (35) are transversely arranged above the inner portion of the combustion chamber (3), and a plurality of secondary air distribution pipes (6) are longitudinally arranged at the bottom of the secondary air distribution pipes.
2. The biomass-fired organic heat carrier furnace of claim 1, wherein: the top of one end of the chain grate (2) is provided with a feeding hole (21), and the bottom of one end of the chain grate (2) is provided with an ash dropping hole (22).
3. The biomass-fired organic heat carrier furnace of claim 1, wherein: the bottom of one end of the combustion chamber (3) is provided with a slag outlet (33), and one side of the combustion chamber (3) is provided with a fire pulling door (34).
4. The biomass-fired organic heat carrier furnace of claim 1, wherein: an insulating layer (11) is arranged on the outer wall of the boiler barrel (1).
5. The biomass-fired organic heat carrier furnace of claim 1, wherein: a smoke folding wall (12) is arranged between the convection heat-receiving pipes (18) in the boiler barrel (1).
6. The biomass-fired organic heat carrier furnace of claim 1, wherein: the top of the boiler barrel (1) is provided with an ash removal door (15).
7. The biomass-fired organic heat carrier furnace of claim 1, wherein: an oil outlet (17) is formed in the outer end of the upper header (5), and an oil return port (16) is formed in the outer end of the lower header (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549001.9U CN221005512U (en) | 2023-09-20 | 2023-09-20 | Organic heat carrier furnace for burning biomass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549001.9U CN221005512U (en) | 2023-09-20 | 2023-09-20 | Organic heat carrier furnace for burning biomass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221005512U true CN221005512U (en) | 2024-05-24 |
Family
ID=91112100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322549001.9U Active CN221005512U (en) | 2023-09-20 | 2023-09-20 | Organic heat carrier furnace for burning biomass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221005512U (en) |
-
2023
- 2023-09-20 CN CN202322549001.9U patent/CN221005512U/en active Active
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