CN203517770U - Water-cooled grate biomass boiler - Google Patents
Water-cooled grate biomass boiler Download PDFInfo
- Publication number
- CN203517770U CN203517770U CN201320690319.2U CN201320690319U CN203517770U CN 203517770 U CN203517770 U CN 203517770U CN 201320690319 U CN201320690319 U CN 201320690319U CN 203517770 U CN203517770 U CN 203517770U
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- water
- smoke
- combustion
- boiler
- chamber
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- Expired - Lifetime
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- 239000002028 Biomass Substances 0.000 title claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 claims abstract description 30
- 239000000779 smoke Substances 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- 239000003546 flue gas Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- 239000003818 cinder Substances 0.000 claims description 4
- 239000003517 fume Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000002309 gasification Methods 0.000 abstract description 4
- 238000000197 pyrolysis Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Solid-Fuel Combustion (AREA)
Abstract
The utility model discloses a water-cooled grate biomass boiler which is characterized in that a hearth of the boiler body comprises a combustion chamber and a burnout chamber communicated through a smoke throat port, wherein a grate consisting of heat exchange water pipes is arranged at the bottom of the combustion chamber; a smoke outlet of the burnout chamber is connected with a smoke discharge device through a first return heat exchange smoke pipe and a second return smoke pipe arranged in a drum. According to the water-cooled grate biomass boiler disclosed by the utility model, the combustion flame is more stable and reliable by changing the combustion structure into water-cooled fixed grate combustion, arranging a heat insulating hearth and increasing the air distribution temperature; a biomass fuel layer is subjected to preheating, dry distillation, gasification and combustion; after that, the granular biomass fuel is subjected to suspension combustion in the hearth through proper air distribution; a settling chamber is arranged in a burnout area to reduce the dust concentration of the smoke and improve the environmental protection effect. The smoke is subjected to heat exchange through a multi-pass large-diameter threaded smoke pipe, and the smoke resistance is reduced and the dust accumulation in the pipe is avoided while guaranteeing the heat exchange conditions; since an air preheater is arranged at the tail part, an air preheating effect is realized while the heat efficiency of the boiler is improved.
Description
Technical field
The utility model patent relates to a kind of middle-size and small-size biomass fuel boiler, belongs to new forms of energy, energy-conserving and environment-protective technical field.
Background technology
Biomass fuel boiler tool conventional on existing market has following problem: 1, owing to can not forming the ash bed of similar fire coal in biomass fuel combustion process, the flame of high-temp combustion often directly acts on fire grate, easily scaling loss casting furnace grate, increases later period maintenance and replacement cost.2, biomass fuel is decomposed into volatile matter in combustion process 80%, only have 20% fixed carbon to burn on fire grate, and lightweight, easily form suspended state, this characteristic makes the existing boiler can not be by the abundant after-flame of biomass fuel, not only reduce the utilization rate of biomass fuel, and increased the flue dust in discharge flue gas, caused environmental pollution.3, the high temperature resistant casting furnace grate of the common employing micropore of existing boiler coordinate air blast from fire grate bottom to wind, then at boiler tail, be equipped with air-introduced machine exhausting and burn, this kind of method power consumption is larger, operating cost is too high; And the micropore of casting furnace grate (ventilation) is very easily blocked, is not suitable for moisture content and uses at 40%～50% wet biomass fuel.4, existing boiler adopts the smoke pipe of thinner diameter as the heat-transfer surface in boiler, and easy dust stratification stops up, heat exchange efficiency is lower.5, existing boiler smoke flow process is single, the easily direct entered environment of the flying dust in combustion process.
Summary of the invention
The weak point existing for fear of prior art, the utility model provides a kind of water-cooled grate biomass boiler,
The utility model technical solution problem adopts following scheme:
The burner hearth of boiler body comprises combustion chamber and the secondary furnace communicating by flue gas aditus laryngis, and the bottom of described combustion chamber is provided with the fire grate being rearranged by heat exchanging water pipe; The exhanst gas outlet of described secondary furnace is connected with fume extractor with the second backhaul smoke pipe by the first backhaul heat exchange smoke pipe being located in drum.
The utility model design feature is also:
The exhanst gas outlet of described the second backhaul smoke pipe is connected with air preheater, and described air preheater outlet one is connected with chimney, and outlet two is connected with the cinder chamber's air outlet that is located at bottom, combustion chamber.
Described air preheater and chimney connectivity part are provided with the air-introduced machine that guiding flue gas is discharged from chimney.
Described combustion chamber is provided with mechanical loading mouth and hand stock mouth simultaneously.
The bottom of described secondary furnace is provided with dust chamber.
Compared with the prior art, the utility model beneficial effect is embodied in:
It is the burning of water-cooled fixed grate that the utility model changes burning structure, set up adiabatic furnace, improve air distribution temperature makes combustion flame more reliable and more stable, first allows the preheating of biomass fuel fuel bed, destructive distillation, gasification, burning;
By suitable air distribution, particulate biomass fuel fuel is burnt at burner hearth inner suspension; At burning-out zone, set up expansion chamber, minute multistage dedusting, reduce Yan Qi Han dust concentration, improve the effect of environmental protection.Flue gas, by the heat exchange of multipass major diameter threaded flue, reduces flue gas resistance, avoids managing interior dust stratification under assurance heat transfer boundary condition; At afterbody, air preheater is set, when improving boiler thermal output, reaches the effect of preheated air.
Accompanying drawing explanation
Fig. 1 is the utility model structure of boiler body schematic diagram.
Fig. 2 is the utility model boiler overall structure schematic diagram.
Number in the figure: 1 combustion chamber, 2 secondary furnaces, 3 drums, 4 mechanical loading mouths, 5 hand stock mouths, 6 headers, 7 first backhaul heat exchange smoke pipes, 8 second backhaul heat exchange smoke pipes, 9 air preheaters, 10 chimneys, 11 cinder chamber's air outlets, 12 air-introduced machines, 13 fire grates, 14 expansion chambers.
Below in conjunction with accompanying drawing, by the specific embodiment, technical solutions of the utility model are further explained to explanation.
The specific embodiment
As shown in Figure 1, the secondary furnace 2 that the burner hearth of boiler body comprises combustion chamber 1 and communicates by flue gas aditus laryngis, is provided with drum 3 in combustion chamber, is provided with mechanical loading mouth 4 and hand stock mouth 5 simultaneously, and the bottom of secondary furnace is provided with dust chamber 14.In combustion chamber, be provided with the fire grate 13 being rearranged by heat exchanging water pipe, fire grate 13 comprises bottom level fire grate and is tilted to upper fire-grating along both sides, hearth wall front and back; Heat exchanging water pipe one end of fire grate 13 is communicated with header 6, one end with communicate with drum 3, the exhanst gas outlet of secondary furnace is connected with fume extractor with the second backhaul heat exchange smoke pipe 8 by the first backhaul heat exchange smoke pipe 7 being located in drum.
As shown in Figure 2, the exhanst gas outlet of the second backhaul heat exchange smoke pipe is connected with air preheater 9, and air preheater 9 outlets one are connected with chimney 10, and outlet two is connected with the cinder chamber's air outlet 11 that is located at bottom, combustion chamber.Air preheater and chimney connectivity part are provided with the air-introduced machine 12 that guiding flue gas is discharged from chimney.
When boiler for producing is manufactured, water-cooled grate is manufactured by seamless steel pipe, and the ventilation rate of water-cooled grate setting is controlled at 40% left and right, and fire grate gap is not more than 20mm in order to avoid granular fuel comes off; Grate area is pressed the evaporation capacity of boiler and is determined.Burner hearth is used adiabatic high-temperature refractory to make, thereby keep flue gas temperature of hearth outlet to be not less than 950 ℃ and reach the burning of wet biomass fuel, the effect of after-flame, the first backhaul heat exchange smoke pipe 7 and the second backhaul heat exchange smoke pipe 8 employing seamless steel pipes to the heavy caliber deep trouth round thread pipe being rolled into, are avoided manage-style dust stratification by three rollers when guaranteeing heat-transfer effect.During use, on fire grate, lay in advance flammable high firewood, then lay moisture content in the above at 40%～50% wet biomass fuel, pass into high temperature air, make the preheating in high-temperature heat insulation burner hearth of wet biomass fuel, destructive distillation, gasification, burning.
The utility model is according to the special status of the physical characteristic of biological quality fuel and combustion characteristics, the special boiler manufacturing and designing, utilize the stable heat dissipation characteristics of water-cooled grate, make very easily the biomass fuel combustion of roasting bad fixed cast-iron fire grate in combustion process obtain after stable operation; The adiabatic furnace arranging and hot blast burning are kept moisture content in the smooth combustion operation of 40%～50% wet biomass fuel.The preheating of biomass fuel of the present utility model, destructive distillation, gasification, burning, after-flame, sedimentation dedusting, heat conversion all processes complete in self body of heater, be different from other fuel steam stove and have middle radiation loss, thereby in the process of biological quality fuel combustion, heat is all absorbed by the heating surface of boiler, exhaust gas temperature is very low, and its thermal efficiency reaches more than 88% after tested.
The utility model boiler matching is used digital control system, and in stove coolant-temperature gage, stove, burning and feedwater, water outlet have all realized computer control, as long as input data can complete the requirements such as burning, feedwater, water outlet.This boiler is equipped with atmospheric communicating pipe, and boiler moves under passive state, without according to the strict restrictive condition operation of special equipment, can in all case use.This boiler design jumbo burner hearth, can continuous burning after once reinforced, be also provided with auto feed mouth simultaneously, can carry out and manually feed in raw material with machine automatization, the very big labour intensity that reduced.
Claims (5)
1. a water-cooled grate biomass boiler, is characterized in that, the burner hearth of boiler body comprises combustion chamber and the secondary furnace communicating by flue gas aditus laryngis, and the bottom of described combustion chamber is provided with the fire grate being rearranged by heat exchanging water pipe; The exhanst gas outlet of described secondary furnace is connected with fume extractor with the second backhaul smoke pipe by the first backhaul heat exchange smoke pipe being located in drum.
2. a kind of water-cooled grate biomass boiler according to claim 1, it is characterized in that, the exhanst gas outlet of described the second backhaul smoke pipe is connected with air preheater, and described air preheater outlet one is connected with chimney, and outlet two is connected with the cinder chamber's air outlet that is located at bottom, combustion chamber.
3. a kind of water-cooled grate biomass boiler according to claim 2, is characterized in that, described air preheater and chimney connectivity part are provided with the air-introduced machine that guiding flue gas is discharged from chimney.
4. a kind of water-cooled grate biomass boiler according to claim 1 and 2, is characterized in that, described combustion chamber is provided with mechanical loading mouth and hand stock mouth simultaneously.
5. a kind of water-cooled grate biomass boiler according to claim 1 and 2, is characterized in that, the bottom of described secondary furnace is provided with dust chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690319.2U CN203517770U (en) | 2013-11-04 | 2013-11-04 | Water-cooled grate biomass boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690319.2U CN203517770U (en) | 2013-11-04 | 2013-11-04 | Water-cooled grate biomass boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203517770U true CN203517770U (en) | 2014-04-02 |
Family
ID=50376699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320690319.2U Expired - Lifetime CN203517770U (en) | 2013-11-04 | 2013-11-04 | Water-cooled grate biomass boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203517770U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329662A (en) * | 2014-10-29 | 2015-02-04 | 惠州市拓丰实业有限公司 | Horizontal type biomass fluidized bed heat pipe boiler |
| CN107166716A (en) * | 2017-07-19 | 2017-09-15 | 长春鸿鑫热能有限公司 | The dust removal integrated small-sized biomass normal-pressure hot-water boiler of combustion heat-exchange |
| CN109268811A (en) * | 2018-10-12 | 2019-01-25 | 扬州正宇锅炉有限公司 | A kind of step-by-step movement combined fire grate boiler |
-
2013
- 2013-11-04 CN CN201320690319.2U patent/CN203517770U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329662A (en) * | 2014-10-29 | 2015-02-04 | 惠州市拓丰实业有限公司 | Horizontal type biomass fluidized bed heat pipe boiler |
| CN107166716A (en) * | 2017-07-19 | 2017-09-15 | 长春鸿鑫热能有限公司 | The dust removal integrated small-sized biomass normal-pressure hot-water boiler of combustion heat-exchange |
| CN109268811A (en) * | 2018-10-12 | 2019-01-25 | 扬州正宇锅炉有限公司 | A kind of step-by-step movement combined fire grate boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 242000 Industrial Zone, Xuanzhou District, Anhui, Xuancheng Patentee after: BRIGHT THERMAL ENERGY EQUIPMENT CO.,LTD. Address before: 242000 No. 2 Kaiyuan Road, Xuanzhou Industrial Zone, Xuanzhou District, Anhui, Xuancheng Patentee before: ANHUI BRIGHT THERMAL EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |