CN203323115U - Co-combustion biomass chain furnace - Google Patents
Co-combustion biomass chain furnace Download PDFInfo
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- CN203323115U CN203323115U CN2013203038020U CN201320303802U CN203323115U CN 203323115 U CN203323115 U CN 203323115U CN 2013203038020 U CN2013203038020 U CN 2013203038020U CN 201320303802 U CN201320303802 U CN 201320303802U CN 203323115 U CN203323115 U CN 203323115U
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Abstract
The utility model discloses a co-combustion biomass chain furnace which comprises a coaling device, a chain grate, a slag discharge device, a heat exchange device, a furnace body and an air blast device, wherein the air blast outlets of the air blast device are correspondingly distributed below the chain of the chain grate; a furnace wall is internally provided with a combustible gas channel; the outlet of the combustible gas channel corresponds to the outlet of the furnace cavity of a combustion chamber or is positioned above the chain grate in a combustible area. According to the utility model, insufficiently combusted volatile matters positioned in the furnace cavity are sufficiently combusted by utilizing outside combustible gas introduced through the combustible gas channel, so that the combustion efficiency of biomass materials is increased, and the generation of a black smoke condition is prevented; in addition, a plurality of low-power air blast outlets are arranged below the chain, so that the requirement for combustion of massive biomass materials is met. The co-combustion biomass chain furnace disclosed by the utility model has the advantages of sufficiency in combustion, high heat efficiency and stability in property and extends the applicability of a chain furnace.
Description
Technical field
The utility model relates to a kind of chain grate furnace, and particularly a kind of mixed combustion type chain grate furnace that utilizes biomass fuel to be burnt, belong to the boiler plant field.
Background technology
The chain grate furnace is divided and is mainly comprised by structure: coaling gear, traveling-grate stoker, air-blast device, slag-draining device, heat-exchanger rig and boiler furnace six major parts.Wherein, be divided into again from bottom to top combustion chamber, heat-exchanging chamber and discharge flue in body of heater, traveling-grate stoker is corresponding in combustion chamber, coaling gear is positioned at the body of heater outside corresponding with chain fire-gate input and output respectively with slag-draining device, heat-exchanger rig is positioned at heat-exchanging chamber, and heat-exchanger rig completes heat absorption and the conversion of combustion process.Due to combustion process mobile carrying out on traveling-grate stoker, therefore usually also be provided with trimmer arch and stove rear arch in combustion chamber, between trimmer arch and traveling-grate stoker, form front furnace, form rear hearth between stove rear arch and traveling-grate stoker.Front furnace and rear hearth can form and hold together fiery effect in combustion chamber, make flare and heat energy form and gather at the combustor exit place, to improve utilization efficiency of heat energy.For guaranteeing the adequacy of fired coal combustion, air-blast device is separately positioned on the outer end of front furnace and rear hearth, air blast except the fire coal in movement carry out combustion-supporting, also can form motive force heat and flare are converged by two side direction stockhole places.
Concrete combustion process is: after the coal-fired coal bunker by coaling gear is sent on chain fire-gate input, through the traveling-grate stoker transmission, enter in combustion chamber, then, coal-fired on traveling-grate stoker through preheating and drying, burning, gradually extinguish three steps after, output to the body of heater outside by the traveling-grate stoker output, last, promote at any time, discharge through slag-draining device, once mobile combustion process completes, and with this process, back and forth carries out, and can form continuous burning and the use of chain grate furnace.Chain grate furnace sufficient combustion, the thermal efficiency is high, and it is convenient to control, but is only suitable for the fine coal that burns, and applicability is restricted.
In recent years, enhancing along with people's environmental protection, awareness of saving energy, utilize the various biomass fuels that agricultural stalk is made to occur in a large number, with biomass fuel, replace the use of burning of part low-quality, fine coal inferior, can reduce costs, can avoid the dependence to primary energy again, so, according to the characteristics of biomass fuel combustion, for chain grate furnace inner structure, improved, to improve the applicability of chain grate furnace, with regard to becoming the utility model, want the problem solved.
Summary of the invention
In view of above-mentioned existing situation, the utility model aims to provide a kind of mixed combustion type chain grate furnace of giving full play to block biomass fuel combustion performance, to improve biomass fuel combustion efficiency, guarantees burning quality.
The utility model is achieved through the following technical solutions:
A kind of mixed biomass-burning chain grate furnace, comprise coaling gear, traveling-grate stoker, slag-draining device, heat-exchanger rig and body of heater, be divided into from bottom to top combustion chamber in described body of heater, heat-exchanging chamber and discharge flue, traveling-grate stoker is corresponding in combustion chamber, position corresponding with the traveling-grate stoker front end in combustion chamber is provided with trimmer arch, position corresponding with the traveling-grate stoker rear end in combustion chamber is provided with the stove rear arch, be divided into successively preheating zone by input to output on traveling-grate stoker, combustion zone and dreg discharging area, also comprise air-blast device, the air blast outlet correspondence of air-blast device is distributed in chain fire-gate chain below, also be provided with the combustible gas passage in the furnace wall of body of heater, the outlet of combustible gas passage is positioned at the front end of trimmer arch and stove rear arch and corresponding to the furnace outlet place of combustion chamber, or the outlet of combustible gas passage is corresponding to chain fire-gate top, combustion zone, the entrance of combustible gas passage is connected with the feeder in the body of heater outside.
The outlet of described combustible gas passage is a plurality of, and a plurality of combustible gas channel outlet are even shape and arrange.
A kind of mixed biomass-burning chain grate furnace described in the utility model, by the combustible gas passage is set in furnace wall, and will export the corresponding traveling-grate stoker top that is distributed in stockhole place or combustion zone, make the extraneous fuel gas that the combustible gas passage is introduced form second-time burning at the stockhole place or directly carry out combustion-supporting in combustion zone, improved the efficiency of combustion of biomass fuel, make the sufficient fugitive constituent of unburned and particle carry out second-time burning or disposable abundant burning, avoid the generation of black smoke situation, guaranteed burning quality; Simultaneously, under chain, the auxiliary air blast that a plurality of small-power air-supplies are set exports, and has met the burning needs of block biomass fuel, has improved the burning reliability.Have sufficient combustion, the thermal efficiency is high, and the advantage of stable performance has formed energy-saving and environmental protection, the combination of biomass fuel and chain grate furnace advantage cheaply, has expanded the applicability of chain grate furnace, has enlarged the scope of application of biomass fuel.
The accompanying drawing explanation
Fig. 1 is structural representation one of the present utility model;
Fig. 2 is structural representation two of the present utility model.
The specific embodiment
Center of the present utility model is: for the burning feature of the block biomass fuel of a large amount of environment-friendly types in the chain grate furnace, biomass fuel is controlled and improved in the combustion process of combustion zone, or according to the second-time burning characteristics, at corresponding stockhole, place carries out auxiliary combustion, improve biomass fuel combustion efficiency to reach, the purpose of avoiding the black smoke situation to occur, guarantee the combustibility of block biomass fuel in the chain grate furnace.
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1, a kind of mixed biomass-burning chain grate furnace described in the utility model, comprise coaling gear 1, traveling-grate stoker 14, slag-draining device 12, heat-exchanger rig 11 and body of heater 2.Wherein, coaling gear 1 and slag-draining device 12 are corresponding to traveling-grate stoker input and the output in body of heater 2 outsides, coaling gear 1 and slag-draining device 12 complete respectively the external discharge of residue after the stacking of block biomass fuel and burning, have guaranteed that combustion process can carry out in order and uninterruptedly.Be divided into from bottom to top combustion chamber 9, heat-exchanging chamber 10 and discharge flue 3 three parts in body of heater 2, traveling-grate stoker 14 is corresponding to combustion chamber 9, again be divided into preheating zone, combustion zone and dreg discharging area to output by combustion process from traveling-grate stoker 14 inputs, biomass fuel is mainly burnt in combustion zone.Heat-exchanger rig 11 is positioned at heat-exchanging chamber 10.Trend for ease of control combustion process heat, position corresponding with traveling-grate stoker 14 front ends in combustion chamber 9 also is provided with trimmer arch 6, in combustion chamber 9, the position corresponding with traveling-grate stoker 14 rear ends is provided with stove rear arch 8, between trimmer arch 6 and stove rear arch 8, forms furnace outlet.
For meeting the burning needs of biomass fuel, avoid original impact on biomass fuel combustion at the larger air-blast device of traveling-grate stoker 14 two ends installation power, the utility model has been modified into the air-blast device at original two ends with a plurality of air blast and has exported the small-power air blast form that 13 correspondences are distributed in traveling-grate stoker 14 belows, the biomass fuel combustion process is carried out to slight wind-force transmission, with the biomass fuel that guarantees block structure can be fully, active combustion, performance biomass fuel combustibility is good, the advantage that combustibility is stable.
For further improving combustion efficiency; make not have fugitive constituent and the particle of burning in time fully to burn; also be provided with combustible gas passage 5 in the trimmer arch 6 of furnace wall and stove rear arch 8; the outlet 4 of combustible gas passage 5 is positioned at the front end of trimmer arch 6 and stove rear arch 8 and corresponding to the furnace outlet place of combustion chamber 9; the entrance of combustible gas passage 5 is communicated with the feeder 15 in body of heater 2 outsides; combustible gas passage 5 makes extraneous combustible gas can enter into smoothly the stockhole place; and forming second-time burning at the stockhole place, particle or fugitive constituent fully burn completely to drive unburned.In this example, for guaranteeing the uniformity of second-time burning, the outlet 4 of combustible gas passage 5 is provided with a plurality of, and is uniform row-like arrangement at trimmer arch 6 and stove rear arch 8 front ends, makes each position of stockhole can produce uniform second-time burning.
In work, block biomass fuel is along with the transmission of traveling-grate stoker 14 is sent constantly in combustion chamber 9, preheating premenstruum (premenstrua) artifact matter fuel takes fire, be subject to power under chain to export 13 corresponding brushing than side drum wind, biomass fuel fully burns and constantly has unburnt fugitive constituent to shoot, be subject to the effect of inner of the boiler chamber face arch 6 and stove rear arch 8, heat and the unburnt fugitive constituent that burn can enter into through stockhole the heat-exchanging chamber 10 on upper strata, now, extraneous combustible gas is introduced in the combustible gas outlet 4 that is positioned at the stockhole place, and in the formation second-time burning of stockhole place, unburnt fugitive constituent or particle are burnt again, completed the auxiliary combustion process, the generation of black smoke situation while having reduced chain grate furnace firing biomass fuel, guaranteed efficiency of combustion.
Certainly, as shown in Figure 2, for guaranteeing combustion process, can fully carry out, the zone of flammability of combustible gas passage outlet 16 also can be directly corresponding to the top of combustion zone traveling-grate stoker 14, like this, block biomass fuel just can fully burn in combustion zone under combustion-supporting gas auxiliary, has guaranteed combustion process.
Claims (2)
1. a mixed biomass-burning chain grate furnace, comprise coaling gear, traveling-grate stoker, slag-draining device, heat-exchanger rig and body of heater, be divided into from bottom to top combustion chamber in described body of heater, heat-exchanging chamber and discharge flue, traveling-grate stoker is corresponding in combustion chamber, position corresponding with the traveling-grate stoker front end in combustion chamber is provided with trimmer arch, position corresponding with the traveling-grate stoker rear end in combustion chamber is provided with the stove rear arch, be divided into successively preheating zone by input to output on traveling-grate stoker, combustion zone and dreg discharging area, it is characterized in that, also comprise air-blast device, the air blast outlet correspondence of described air-blast device is distributed in chain fire-gate chain below, also be provided with the combustible gas passage in the furnace wall of described body of heater, the outlet of described combustible gas passage is positioned at the front end of trimmer arch and stove rear arch and corresponding to the furnace outlet place of combustion chamber, or the outlet of combustible gas passage is corresponding to chain fire-gate top, combustion zone, the entrance of described combustible gas passage is connected with the feeder in the body of heater outside.
2. a kind of mixed biomass-burning chain grate furnace according to claim 1, is characterized in that, the outlet of described combustible gas passage is a plurality of, and a plurality of combustible gas channel outlet are even shape and arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203038020U CN203323115U (en) | 2013-05-30 | 2013-05-30 | Co-combustion biomass chain furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203038020U CN203323115U (en) | 2013-05-30 | 2013-05-30 | Co-combustion biomass chain furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203323115U true CN203323115U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203038020U Expired - Fee Related CN203323115U (en) | 2013-05-30 | 2013-05-30 | Co-combustion biomass chain furnace |
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| Country | Link |
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| CN (1) | CN203323115U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197316A (en) * | 2014-09-11 | 2014-12-10 | 衡阳衡锅锅炉有限公司 | Gas-solid dual-fuel boiler |
| CN107975939A (en) * | 2017-11-28 | 2018-05-01 | 湖南长宏南雁锅炉修理安装有限公司 | Fuel can clean-burning biomass water pipe boiler |
| CN108488780A (en) * | 2018-06-05 | 2018-09-04 | 胡光 | After burner |
-
2013
- 2013-05-30 CN CN2013203038020U patent/CN203323115U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197316A (en) * | 2014-09-11 | 2014-12-10 | 衡阳衡锅锅炉有限公司 | Gas-solid dual-fuel boiler |
| CN107975939A (en) * | 2017-11-28 | 2018-05-01 | 湖南长宏南雁锅炉修理安装有限公司 | Fuel can clean-burning biomass water pipe boiler |
| CN108488780A (en) * | 2018-06-05 | 2018-09-04 | 胡光 | After burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |