CN102062391A - Automatic helical feeding combustion boiler - Google Patents
Automatic helical feeding combustion boiler Download PDFInfo
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- CN102062391A CN102062391A CN 201110034230 CN201110034230A CN102062391A CN 102062391 A CN102062391 A CN 102062391A CN 201110034230 CN201110034230 CN 201110034230 CN 201110034230 A CN201110034230 A CN 201110034230A CN 102062391 A CN102062391 A CN 102062391A
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Abstract
The invention discloses an automatic helical feeding combustion boiler which comprises a boiler body and a boiler wall. The automatic helical feeding combustion boiler is characterized in that a helical propeller is arranged at a boiler feeding hole, the outer end of the helical propeller is connected with a motor and a feeding device, the feeding device is arranged on the top surface of the helical propeller, the inner end of the helical propeller is arranged at a combustion chamber feeding hole, the bottom surface of a combustion chamber is provided with a fire grate, and fuel is arranged on the top surface of the fire grate. The invention has the advantages that the fuel directly combusts on the fire grate and stays for a long time, thus the ventilating combustion-supporting effect is good, the fuel is saved, boiled water and steam are rapidly obtained, and the temperature of a hearth reaches above 1150 DEG C; and the heat efficiency is high, emission of smoke, harmful gases SO2, NOx and the like is reduced, and various indexes and energy-saving indexes are greatly superior to the standard specified in China.
Description
Technical field
The present invention relates to boiler, particularly a kind of spiral self-feeding burning boiler.
Background technology
Mostly existing boiler is chain furnace, and the key factor that influences boiler thermal output is non-complete combustion of fuel and heat loss due to exhaust gas.This stove all is from the lower stokehold portion coal of temperature.Chain furnace is moving along with fire grate, coal is sent to the process of high-temperature region until burning from low-temperature space, because traveling-grate stoker continuity transmitting range is distant, from the very long rising of low temperature, actual in initial temperature, fire grate needs heat absorption again in this process, thereby whole fire box temperature decreases (falling about 100-150 ℃), its coal seam also can not get abundant burning, and a large amount of fugitive constituents are separated out and also be can not get abundant burning, form heat loss due to unburned gas, the chimney over-emitting black exhaust is the shortcoming that chain furnace is difficult to avoid.Boiler slag carbon content is higher to be reached more than 50%, along with the fire grate transmission, causes slag temperature height, and therefore, whole process causes non-complete combustion of fuel and heat loss due to exhaust gas more serious.
Summary of the invention
The object of the present invention is to provide a kind of combustion technology of auto-feeder, fuel combustion enters Pintsch process half gasification combustion chamber through automatic feeding system, also is coal is sent to the process of high-temperature region until burning from low-temperature space.But the auto-feeder stove is to select fixed grate for use, and therefore, under the normal combustion state, fire grate temperature height, stable reduce unnecessary loss, thereby whole fire box temperature is corresponding to more than the chain furnace height (100-150 ℃).Since automatic feeding system utilize auto-feeder with fuel on grate surface slowly at the uniform velocity by outer past interior propelling, the coal that newly adds is subjected to the thermal contact conductance of the convection current radiation heat release of high-temperature flue gas and hot coke, lime-ash, fire grate and heats up, moisture in the fuel is start vaporizer just, until oven dry fully.When reaching uniform temperature, the fugitive constituent in the fuel is just discharged in a large number, and the hydrocarbon that easily produces in the flammable fugitive constituent of black smoke is converted into fuel gas earlier, burns with the coke one of the sloughing fugitive constituent combustion chamber that coexists.Because chamber temperature is up to more than 1150 ℃, smog is able to abundant decomposition, with its reduction boiler slag carbon content, unburned carbon in flue dust.Putting into practice slag content can reduce to below 5% by 15%, even lower, has relatively also reduced more than 30% and go out the quantity of slag.Fly ash content and boiler slag carbon content are compared the reduction amplitude with chain furnace bigger, and therefore, the boiler thermal output of auto-feeder also has increased significantly.But also reduce the discharging of flue dust and pernicious gas SO2, NOX etc. as much as possible, and solved coal and directly burnt and produce the difficult problem of black smoke, reach the effect of smoke abatement and dust control, make every environmental protection of boiler and energy-saving index be better than national standard greatly.
Technical solution of the present invention is such: a kind of spiral self-feeding burning boiler, comprise boiler body, furnace wall, it is characterized in that spiral propeller is installed in the boiler feed mouth, the spiral propeller outer end connects motor and feeding device, and the combustion chamber is stretched in spiral propeller the inner.
The outer end face of spiral propeller inner port has lengthened plate.
There is the inclined-plane corner, combustion chamber.
Spiral propeller, feeding device, motor have more than one, and the fire grate end face is a fuel, and the fuel end face is the combustion chamber, and periphery is fire tube, fire tube water flowing case above the combustion chamber, and fire grate is packed in the bottom surface, combustion chamber.
The boiler outlet flue is connected logical with the air-introduced machine of chimney.
Feeding device is contained in the spiral propeller front end of the top surface.
Spiral propeller is contained in the horizontal boiler feeding mouth.
Spiral propeller is contained in the vertical boiler feeding mouth.
The present invention compares its beneficial effect with existing combustion furnace: have economy, material benefit, with respect to chain grate boiler direct economic benefit aspect, the economic benefit of this boiler is appreciable, chamber temperature is up to more than 1150 ℃, solved the problem that fiery direct burning produces black smoke, reduce the discharging of flue dust and pernicious gas SO2, NOX effectively, smoke abatement and dust control, make every environmental protection and energy saving index be far superior to national standard, save the about 20KW of electric energy above, save traveling-grate stoker be about whole stove cost 50%, easy to maintenance, the saving maintenance cost.After adopting new combustion technology, improved the economic benefit of boiler greatly.
Description of drawings
It is such that structure of the present invention constitutes:
Fig. 1 is the main cutaway view of looking of boiler general assembly of the present invention.
Fig. 2 is a boiler general assembly vertical view cutaway drawing of the present invention.
Fig. 3 looks cutaway view for the boiler general assembly of the present invention right side.
Fig. 4 looks cutaway view for boiler body master of the present invention.
Fig. 5 looks cutaway view for the boiler body of the present invention right side.
Fig. 6 is a boiler body vertical view cutaway drawing of the present invention.
Fig. 7 is that body of wall of the present invention is pressed D-D cutaway view among Fig. 9.
Fig. 8 is that body of wall of the present invention is pressed A-A cutaway view among Fig. 7.
Fig. 9 is that body of wall of the present invention is pressed B-B cutaway view among Fig. 7.
Figure 10 is that body of wall of the present invention is pressed C-C cutaway view among Fig. 7.
Among Fig. 1～Figure 10, boiler body (1), safety valve (2), hanger (3), inclined-plane (4), manhole (5), combustion chamber (6), fire door (7), main air valve (8), fire grate (9), stove hall (10), furnace wall (11), outlet flue (12), lengthened plate (13), feeding device (14), motor (15), spiral propeller (16), shoot door (17), nameplate (18), base (19), shell device (20), brace (21), Drag link (22), threaded flue (23), water screen tube (24), left side collection case (25), right collection case (26), front smoke box (27), heat-insulation layer (28), standard brick (29), blow-off pipe pillar brick (30), refractory concrete (31), water-cooling wall straight tube (32), rear cross beam (33), smoke passing port (34).
The specific embodiment:
Most preferred embodiment of the present invention is such:
The theory of combustion was divided into the next stage:
1, dehydration: the moisture in the fuel is heated and evaporates gasification, overflows from fuel.
2, separating out and burn of fugitive constituent: after fuel was heated, low-molecular-weight material at first decomposed gasification, promptly generated gas phase flame after arriving ignition temperature.
3, transition stage: this moment, cellulosic thermal decomposition rate descended, and the fugitive constituent material still can keep combustion flame.
4, coke surface burning: all carbonizations of the lignin in the fuel, the surface generates hot flame.Burning enters the theory of combustion that Pintsch process half gasification combustion chamber has thoroughly changed conventional boiler through automatic feeding system, utilize auto-feeder with fuel on grate surface at the uniform velocity by outside toward interior propelling, make fuel one warm at first arranged at the fuel that the combustion process middle front part divides, when reaching uniform temperature, the hydrocarbon that fugitive constituent in the fuel is just discharged in a large number and easily produced in the flammable fugitive constituent of black smoke is converted into fuel gas earlier, burns with the coke one of the sloughing fugitive constituent combustion chamber that coexists.Because chamber temperature is up to more than 1150 ℃, smog is able to abundant decomposition, has solved coal and has directly burnt and produce the difficult problem of black smoke.This theory of combustion makes fuel completing combustion as much as possible and efficient the utilization, the higher thermal efficiency is arranged, but also reduce the discharging of flue dust and pernicious gas SO2, NOX etc. as much as possible, and reach the effect of smoke abatement and dust control, make every environmental protection of boiler and energy-saving index be better than national standard greatly.
Concrete structure is: the part-structure of the chain furnace of the former existing use of structure reference of boiler body and body of wall, but transformed the feeding structure of modification in feed system and combustion chamber periphery.Its periphery had the corner to pile up easily agglomerating formation dead angle when fuel entered the combustion chamber, was unfavorable for abundant burning, so be built into inclined-plane (4) in the corner, allowed the fuel smoothness.Establish lengthened plate (13) at the inlet that enters combustion chamber (6) in addition, be beneficial to a fuel can directly deliver to fire grate inner chamber high-temperature region enter sooner the burning role.Fire grate (9) end face is a fuel, and the fuel end face is combustion chamber (6), and fire grate (9) is packed in boiler furnace (6) bottom surface, the fuel coal grain, or faggot tangerine bar is done and is granulated.For this reason, fuel is in the burning of relative fixed position, and formation is slowly solidified agglomerating, and the sustained combustion time is long, is difficult for the loss heat, fully burning, and it is few to slag tap, the utilization rate height.Fire grate (9) uses original fire grate structure, but what directly enter on fire grate (9) face is the coal seam, and be combustion chamber (6) above the coal seam, rather than be the coal seam on the chain furnace structure chain face of former use, on the grate surface chain.The coal seam is pulled away from the combustion zone continuously under chain drives, cause most of fuel and be not fully burned promptly to be pulled away and cause waste.
Motor (15) connects spiral propeller (16), and spiral propeller (16) is installed in charging aperture, and fuel is (6) bottom surface in the combustion chamber, and combustion chamber (6) end face periphery is a fire tube, fire tube water flowing case.Feeding device (14) is contained in above the spiral propeller (16), it under the discharging opening of fuel-feed bucket spiral propeller (16), fuel is delivered to spiral propeller (16) through feeding device (14), and screw-in combustion chamber (6), fuel is directly burning on fire grate (9), and constantly push fuel by spiral propeller (16) and burn, fuel advances while burning on fire grate (9), the slag that burns completely from discharging to shoot door (17) under the fire grate gap.Be the discharging opening of spiral propeller (16) under the lengthened plate (13), make it discharging and can prolong row along lengthening section, result in blockage to periphery and promptly loose after being unlikely fuel and coming out from discharging opening, so fuel can directly enter combustion process, combustion efficiency is very desirable, the thermal efficiency also is greatly improved, purifying exhaust air, waste residue.
Claims (8)
1. spiral self-feeding burning boiler, comprise boiler body, furnace wall, it is characterized in that spiral propeller (16) is installed in the boiler feed mouth, spiral propeller (16) outer end connects motor (15) and feeding device (14), and combustion chamber (6) is stretched in spiral propeller (16) the inner.
2. according to the described spiral self-feeding of claim 1 burning boiler, it is characterized in that the outer end face of spiral propeller (16) inner port has lengthened plate (13).
3. according to the described spiral self-feeding of claim 1 burning boiler, it is characterized in that there is inclined-plane (4) corner, combustion chamber (6).
4. according to the described spiral self-feeding of claim 1 burning boiler, it is characterized in that spiral propeller (16), feeding device (14), motor (15) have more than one, fire grate (9) end face is a fuel, the fuel end face is combustion chamber (6), periphery is fire tube, fire tube water flowing case above the combustion chamber (6), and fire grate (9) is packed in the bottom surface, combustion chamber.
5. according to the described spiral self-feeding of claim 1 burning boiler, it is logical to it is characterized in that boiler outlet flue (12) is connected with the air-introduced machine of chimney.
6. according to the described spiral self-feeding of claim 1 burning boiler, it is characterized in that feeding device (14) is contained in spiral propeller (16) front end of the top surface.
7. according to the described spiral self-feeding of claim 1 burning boiler, it is characterized in that spiral propeller (16) is contained in the horizontal boiler feeding mouth.
8. according to the described spiral self-feeding of claim 1 burning boiler, it is characterized in that spiral propeller (16) is contained in the vertical boiler feeding mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110034230 CN102062391A (en) | 2011-02-01 | 2011-02-01 | Automatic helical feeding combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110034230 CN102062391A (en) | 2011-02-01 | 2011-02-01 | Automatic helical feeding combustion boiler |
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|---|---|
| CN102062391A true CN102062391A (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110034230 Pending CN102062391A (en) | 2011-02-01 | 2011-02-01 | Automatic helical feeding combustion boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471087A (en) * | 2013-09-10 | 2013-12-25 | 张纯勇 | Integrated biomass particle burner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072488A (en) * | 1991-11-16 | 1993-05-26 | 戴瑞乐 | Coal burning stove |
| CN201262396Y (en) * | 2008-08-12 | 2009-06-24 | 郑州锅炉有限责任公司 | Coal feeder of circulating fluidized bed boiler |
| CN201339949Y (en) * | 2008-08-15 | 2009-11-04 | 苏州工业设备安装集团有限公司 | Biomass boiler |
| CN201954527U (en) * | 2011-02-01 | 2011-08-31 | 何忠海 | Spiral automatic feed combustion boiler |
-
2011
- 2011-02-01 CN CN 201110034230 patent/CN102062391A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072488A (en) * | 1991-11-16 | 1993-05-26 | 戴瑞乐 | Coal burning stove |
| CN201262396Y (en) * | 2008-08-12 | 2009-06-24 | 郑州锅炉有限责任公司 | Coal feeder of circulating fluidized bed boiler |
| CN201339949Y (en) * | 2008-08-15 | 2009-11-04 | 苏州工业设备安装集团有限公司 | Biomass boiler |
| CN201954527U (en) * | 2011-02-01 | 2011-08-31 | 何忠海 | Spiral automatic feed combustion boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471087A (en) * | 2013-09-10 | 2013-12-25 | 张纯勇 | Integrated biomass particle burner |
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Application publication date: 20110518 |