CN201764524U - Air distribution system of biomass molding fuel boiler - Google Patents
Air distribution system of biomass molding fuel boiler Download PDFInfo
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- CN201764524U CN201764524U CN2010202434229U CN201020243422U CN201764524U CN 201764524 U CN201764524 U CN 201764524U CN 2010202434229 U CN2010202434229 U CN 2010202434229U CN 201020243422 U CN201020243422 U CN 201020243422U CN 201764524 U CN201764524 U CN 201764524U
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- airduct
- boiler
- biomass molding
- molding fuel
- air outlet
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Abstract
The utility model discloses an air distribution system of a biomass molding fuel boiler, which comprises a boiler front air duct arranged on the front wall of the boiler, a bottom air duct arranged on the side wall of the boiler and a rotational flow air duct arranged above the bottom air duct. In the utility model, the boiler front air duct is added, so that biomass molding fuel entering the boiler from a feed opening of the boiler is quickly dried, separates out volatilizing components and further can be quickly combusted; the biomass molding fuel is combusted sufficiently under the supplemented air flow of the bottom air duct on the side of the boiler; and the rotational flow air duct is arranged above the bottom air duct, so that BMF (Biomass Molding Fuel) can be further combusted sufficiently on one hand and powdered ash residue falls on a fire grate under the action of rotational flow on the other hand to reduce the content entering a radiation area along with high-temperature smoke gas.
Description
Technical field
The utility model relates to the air distribution of boiler, relates in particular to a kind of blowing system of biomass shaping fuel-combustion boiler.
Background technology
The air distribution mode of coal-burning boiler mainly contains at present: waisted type air distribution, the air distribution of falling the pagoda, positive pagoda air distribution.These several air distribution modes have characteristics separately, and positive pagoda air distribution can simply be regarded secondary wind air quantity as and be reduced successively to the upper strata by lower floor, and the air distribution of falling the pagoda then increases from down to up successively, and waisting shape air distribution is in the middle of the two.
For adopting which kind of air distribution mode mainly by which kind of coal of burning, and situation decisions such as the temperature of boiler, pressure, carbon content of fly ash, positive pagoda air distribution helps improving steam temperature, the air distribution of falling the pagoda is then opposite, the air distribution of falling the pagoda can simply be interpreted as fractional combustion, helps lower meager coal of volatile matter and anthracitic burning.
Chinese patent ZL86200461 discloses a kind of air distribution device for chain-grate boiler, belong to a kind of heat power equipment air distribution device of making fuel with coal, be used in particular for the air distribution device of medium and small chain-grate boiler, it comprises five air compartments, seal between each air compartment, each air compartment is divided into three zones that ventilation is different again, and trizonal percent opening is proportional, five air compartment import sectional areas are proportional again, and the air compartment both side ends is provided with square ash leakage hole.It is unreasonable for air distribution that this air distribution device for chain-grate boiler has solved existing air distribution device for chain-grate boiler, and the burner hearth fuel combustion is incomplete, the many problems of discharging flue dust, have fuel and air good mixing, do not have tiltedly fire in the burner hearth, fiery partially phenomenon, boiler heat supplying efficient height, the few advantage of discharging flue dust.
Chinese patent 200320131248 discloses a kind of fire grate air distribution adjusting device, and longitudinal baffle and lateral partitions are set below the burner of fire grate, forms the grid-shaped air compartment, and each air compartment all is furnished with independently bellows and the air quantity governor motion is set.Each little air compartment of this fire grate air distribution adjusting device can be regulated air quantity separately, guaranteed that in combustion process the stoker surface any part can both have sufficient air quantity, satisfied the requirement of fuel combustion to air quantity, making fuel burn the back fully discharges, improved the efficiency of combustion of fuel greatly, save the energy, can be widely used in various boilers.
Chinese patent 200420013970 discloses a kind of blowing system of vertical boiler gasification, and combustion, it is made up of interior wind box, exogenous wind box, secondary air channel, tertiary air mouth, its exogenous wind box that is located at the band control valve of boiler outside is connected with interior wind box by air main, and be connected with annular wind band in the outer bag box by inferior airduct simultaneously, annular wind band is connected with several secondary air channels, tertiary air mouth by several semicircle vertical airducts.Utilize air blast by air main through interior wind box, fire grate coal seam air feed to burning; Simultaneously by ventilation shafts such as time airduct, annular wind band, semicircle vertical airducts through secondary air channel and tertiary air mouth different parts air feed to the middle and upper part of burner hearth, can guarantee that so the abundant burning of combustible in the stove can satisfy the needs of smoke abatement and dust control again.
Chinese patent 200520141959 discloses a kind of environment friendly energy-saving ordinary pressure water-boiling boiler air distribution device, adopt primary air intake pipe and secondary air intake pipe and spiral blower structure, primary air intake pipe is blown into the coal seam with air by the wind basin, with coal seam mixing after-combustion, the secondary air channel air port is flat slot, therefore the penetration power of wind increases, fuel gas and the fuel fines that floats in the combustion chamber fully can be mixed with air by its spiral wind that blows out, be fully burned, row and every row more than secondary air channel can be established simultaneously establish a plurality of, have improved the thermal efficiency of boiler greatly; Blow out wind along the flue spiral and on, the flue dust in the flue is thrown toward the flue outer wall under its effect, thereby sinks in the flue bottom, can be outside dedust port be removed stove, the spiral blower is provided with many rows and every row and establishes a plurality ofly simultaneously, efficiency of dust collection is higher.
Boiler is the new boiler that is different from coal-burning boiler to biomass molding fuel (be bio-mass fuels, be called for short BMF), and BMF density is big, the fugitive constituent height, and easy firing adopts the air distribution mode of above-mentioned traditional coal-burning boiler can not reach good combustion efficiency.
Summary of the invention
At the shortcoming of prior art, the purpose of this utility model provides a kind of biomass molding fuel boiler wind speed adjustment system, and good dedusting effect also can make biomass molding fuel fully burn.
To achieve these goals, the utility model provides a kind of biomass molding fuel boiler wind speed adjustment system, and wherein, it comprises the stokehold airduct that is arranged at the boiler front wall, is arranged at the bottom airduct of boiler side wall, and the eddy flow airduct that is arranged at airduct top, bottom.
Preferably, the stokehold airduct is arranged on the fuel material inlet below of boiler, and the air outlet of stokehold airduct is tilted to the blanking direction of aiming at material inlet is set; The stokehold airduct also can be arranged on the fuel material inlet top of boiler, and the air outlet of stokehold airduct is tilted to down the blanking direction of aiming at feed is set.
Preferably, the stokehold airduct comprises more than one air outlet, can be four to ten, and its caliber and air outlet quantity can change according to the capacity of boiler.
Further, the stokehold airduct comprises to be responsible for and to be in charge of, and is responsible for horizontally set, and it is provided with by seven is in charge of the air outlet that forms, and respectively is in charge of to be spaced, and is in charge of outlet and is tilted to down layout.
Preferably, the bottom airduct is symmetrical arranged respectively in the boiler both sides and more than one air outlet is arranged, and can be three to 12
Preferably, a plurality of air outlet rotation directions of the both sides eddy flow airduct of bottom airduct top are provided with, and make the wind that blows out form the eddy flow district at burner hearth.
Preferably, the air outlet of both sides eddy flow airduct is symmetrically distributed, and it is the tangent line of the round both sides in the center of circle that the extended line of both sides air outlet direction is with the burner hearth center.
Preferably, the bottom airduct is direct-firing (is arranged in the furnace wall, do not put in burner hearth).
Compared with prior art, the utility model has increased the stokehold airduct, makes the biomass molding fuel that enters boiler by the boiler material inlet dry rapidly, separates out fugitive constituent, and then burning rapidly; Under the additional air quantity of bottom, furnace side airduct, biomass molding fuel fully burns; Airduct top, bottom is provided with the eddy flow airduct, makes the further abundant after-flame of BMF on the one hand, can make the powdery lime-ash on the other hand under cyclonic action, falls on the fire grate, reduces the content that enters radiation area with high-temperature flue gas.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation that the utility model is overlooked direction.
Fig. 2 is the side-looking direction schematic diagram of Fig. 1.
The specific embodiment
See also Fig. 1 and Fig. 2, the biomass molding fuel boiler wind speed adjustment system of present embodiment comprises the stokehold airduct 2 that is arranged at boiler front wall 1, is arranged at the bottom airduct 4 of boiler side wall 3, and the eddy flow airduct 5 that is arranged at airduct 4 tops, bottom; Stokehold airduct 2 is arranged on the fuel material inlet 6 of boiler
Below, stokehold airduct 2 comprise is responsible for 7 and be in charge of 8, is responsible for 7 horizontally sets, is spaced on it to be provided with by seven to be in charge of 8 air outlets that form, respectively is in charge of 8 perpendicular to the person in charge 7 and be tilted to down discharging direction to reference standard fuel material inlet 6; Bottom airduct 4 is symmetrical arranged respectively in the boiler both sides, and bottom airduct 4 is the direct-firing grate surface of going forward side by side, and each side all has nine air outlets 9; The air outlet 10 rotation direction settings of the both sides eddy flow airduct 5 of airduct 4 tops, bottom, make the wind that blows out form the eddy flow district at burner hearth 11, the air outlet 10 that is both sides eddy flow airduct 5 respectively has three and symmetrical distribution, and it is the tangent line of the round both sides in the center of circle that the extended line of both sides air outlet direction is with the burner hearth center.The caliber of stokehold airduct 2, bottom airduct 4 and eddy flow airduct 5 and air outlet quantity can change according to the capacity of boiler.
After biomass molding fuel enters boiler by the boiler material inlet, dry rapidly behind the capacity air that the stokehold airduct replenishes, separate out fugitive constituent, and then burning rapidly, and under the promotion of fire grate, evenly passed the burner hearth center; Under the additional air quantity of the bottom of furnace side airduct, fully burning; Under the air quantity of eddy flow airduct, biomass molding fuel burns fully substantially, fraction powdery lime-ash enters the radiation area heat exchange with high-temperature flue gas, most of powdery lime-ash is under cyclonic action, fall on the fire grate to be pushed in the deslagging device and discharge by fire grate, minimizing enters the content of radiation area with high-temperature flue gas, makes the few dust stratification of boiler.
Though the utility model discloses as above with preferred embodiment, be not in order to limit the scope that the utility model is implemented.Any those of ordinary skill in the art, in not breaking away from invention scope of the present utility model, when doing a little improvement, promptly every equal improvement of doing according to the utility model should be invention scope of the present utility model and contains.
Claims (9)
1. a biomass molding fuel boiler wind speed adjustment system is characterized in that, it comprises the stokehold airduct that is arranged at the boiler front wall, is arranged at the bottom airduct of boiler side wall, and the eddy flow airduct that is arranged at airduct top, described bottom.
2. biomass molding fuel boiler wind speed adjustment according to claim 1 system is characterized in that, described stokehold airduct is arranged on the fuel material inlet below of boiler, and the air outlet of stokehold airduct is tilted to setting.
3. biomass molding fuel boiler wind speed adjustment according to claim 1 system is characterized in that, described stokehold airduct is arranged on the fuel material inlet top of boiler, and the air outlet of stokehold airduct is tilted to down setting.
4. according to the described biomass molding fuel boiler wind speed adjustment of one of claim 1-3 system, it is characterized in that described stokehold airduct comprises an above air outlet.
5. biomass molding fuel boiler wind speed adjustment according to claim 4 system is characterized in that, described stokehold airduct comprises to be responsible for and to be in charge of, and is responsible for horizontally set, and it is provided with by many is in charge of the air outlet that forms, and respectively is in charge of to be spaced.
6. biomass molding fuel boiler wind speed adjustment according to claim 1 system is characterized in that, described bottom airduct is symmetrical arranged respectively in the boiler both sides and more than one air outlet arranged.
7. biomass molding fuel boiler wind speed adjustment according to claim 6 system is characterized in that, a plurality of air outlet rotation directions of the both sides eddy flow airduct of described bottom airduct top are provided with, and makes the wind that blows out form the eddy flow district at burner hearth.
8. biomass molding fuel boiler wind speed adjustment according to claim 7 system is characterized in that, the air outlet of described both sides eddy flow airduct is symmetrically distributed, and it is the tangent line of the round both sides in the center of circle that the extended line of both sides air outlet direction is with the burner hearth center.
9. biomass molding fuel boiler wind speed adjustment according to claim 1 system is characterized in that described bottom airduct is the direct-firing grate surface of going forward side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202434229U CN201764524U (en) | 2010-06-30 | 2010-06-30 | Air distribution system of biomass molding fuel boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202434229U CN201764524U (en) | 2010-06-30 | 2010-06-30 | Air distribution system of biomass molding fuel boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201764524U true CN201764524U (en) | 2011-03-16 |
Family
ID=43717132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202434229U Expired - Lifetime CN201764524U (en) | 2010-06-30 | 2010-06-30 | Air distribution system of biomass molding fuel boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201764524U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012038A (en) * | 2010-06-30 | 2011-04-13 | 广州迪森热能技术股份有限公司 | Air distribution system of biomass moulding fuel boiler |
| CN105423756A (en) * | 2015-11-25 | 2016-03-23 | 苏州汇科机电设备有限公司 | Kiln chamber combustion air arrangement structure for battery powder material firing furnace |
-
2010
- 2010-06-30 CN CN2010202434229U patent/CN201764524U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012038A (en) * | 2010-06-30 | 2011-04-13 | 广州迪森热能技术股份有限公司 | Air distribution system of biomass moulding fuel boiler |
| CN105423756A (en) * | 2015-11-25 | 2016-03-23 | 苏州汇科机电设备有限公司 | Kiln chamber combustion air arrangement structure for battery powder material firing furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
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| CX01 | Expiry of patent term |