CN201954527U - Spiral automatic feed combustion boiler - Google Patents
Spiral automatic feed combustion boiler Download PDFInfo
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- CN201954527U CN201954527U CN2011200342829U CN201120034282U CN201954527U CN 201954527 U CN201954527 U CN 201954527U CN 2011200342829 U CN2011200342829 U CN 2011200342829U CN 201120034282 U CN201120034282 U CN 201120034282U CN 201954527 U CN201954527 U CN 201954527U
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- spiral propeller
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Abstract
The utility model discloses a spiral automatic feed combustion boiler, which comprises a boiler body and a boiler wall. The spiral automatic feed combustion boiler is characterized in that: a spiral propeller is arranged at a feed port of the boiler; the outer end of the spiral propeller is connected with a motor and a feeding device; the feeding device is arranged on the top surface of the spiral propeller; the inner end of the spiral propeller is positioned at a feeding port of a combustion chamber; a fire grate is arranged on the bottom surface of the combustion chamber; and fuel is positioned on the top surface of the fire grate. The spiral automatic feed combustion boiler has the advantages that: the fuel is combusted on the surface of the fire grate directly, the retention time is prolonged, the ventilating and combustion-supporting effect is good, the fuel is saved, boiling water and steam are heated quickly, the temperature of a hearth is up to more than 1,150 DEG C, the heat efficiency is high, discharge of smoke dust and harmful gases such as SO2, NOX and the like are reduced, and various indexes and energy-saving indexes are superior to the standard of a national regulation greatly.
Description
Technical field
The utility model 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 purpose of this utility model is to provide a kind of combustion technology of auto-feeder, and 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 utility model 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 utility model is compared 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
Fig. 1 is the main cutaway view of looking of boiler general assembly of the present utility model.
Fig. 2 is a boiler general assembly vertical view cutaway drawing of the present utility model.
Fig. 3 looks cutaway view for the boiler general assembly of the present utility model right side.
Fig. 4 looks cutaway view for boiler body master of the present utility model.
Fig. 5 looks cutaway view for the boiler body of the present utility model right side.
Fig. 6 is a boiler body vertical view cutaway drawing of the present utility model.
Fig. 7 is that body of wall of the present utility model is pressed D-D cutaway view among Fig. 9.
Fig. 8 is that body of wall of the present utility model is pressed A-A cutaway view among Fig. 7.
Fig. 9 is that body of wall of the present utility model is pressed B-B cutaway view among Fig. 7.
Figure 10 is that body of wall of the present utility model 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 utility model is such:
Embodiment 1, with reference to accompanying drawing 1～Figure 10, boiler is sent on the inner of the boiler chamber row by the screw rod of stokehold with fuel (adopting fine granularity moulded coal and biological particles usually), motor passes through VFC, can control the speed and the inlet amount of charging in good time, we make fuel carry out fully fire burns in stove by regulating the air-supply of fire grate bottom.Produce sensible heat and intermediate product H2, CH4, flammable compositions such as CnHm, Co in this process; Directly enter high temperature combustors completing combustion by the air-supply of fire grate bottom, emit heat.
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) 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.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.Fuel is made of Paniculate coal or faggot tangerine bar 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 heat utilization efficiency height.
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 the space is arranged, it is combustion-supporting to obtain more air.Combustion efficiency is very desirable, and the thermal efficiency also is greatly improved, the purifying exhaust air waste residue.
Embodiment 2, with reference to accompanying drawing 1～Figure 10, spiral self-feeding boiler of the present invention, when being applied in vertical boiler, the discharging port of spiral propeller (16) is directly facing to the boiler feeding mouth, corner, the combustion chamber of boiler (6) is without lengthened plate (13), inclined-plane (4) need not be built in the corner, spiral propeller (16) outer end connects motor (15), and the end face of spiral propeller (16) is feeding device (14), and structure at this moment is to be fuel on fire grate (9) face, above the fuel combustion chamber (6), be burner hearth and fire tube above the combustion chamber (6), fire tube connects water tank, and water tank connects steam port and hot-water outlet.Burning is done and is granulated with coal, faggot, tangerine bar.(6) are the burnings that almost remains static to fuel in the combustion chamber, allowing sufficient combustion burn remaining a small amount of lime-ash also can be slowly agglomerating, after ashing, just fall down from fire grate (9) space, discharge from shoot door (17), this combustion process also is to prolong the fuel time of staying, improve heat utilization efficiency, reduce useless cigarette, waste gas, waste residue, purify air, play the purpose of environment-friendly and energy-saving emission-reduction, so its heat utilization efficiency is than the boiler improve about 30% of common traveling-grate stoker structure, and it is simple in structure, easy to manufacture, easy to use, safe and reliable.
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 bottom surface, combustion chamber (6).
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 |
|---|---|---|---|
| CN2011200342829U CN201954527U (en) | 2011-02-01 | 2011-02-01 | Spiral automatic feed combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200342829U CN201954527U (en) | 2011-02-01 | 2011-02-01 | Spiral automatic feed combustion boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201954527U true CN201954527U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200342829U Expired - Fee Related CN201954527U (en) | 2011-02-01 | 2011-02-01 | Spiral automatic feed combustion boiler |
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| CN (1) | CN201954527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062391A (en) * | 2011-02-01 | 2011-05-18 | 何忠海 | Automatic helical feeding combustion boiler |
-
2011
- 2011-02-01 CN CN2011200342829U patent/CN201954527U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062391A (en) * | 2011-02-01 | 2011-05-18 | 何忠海 | Automatic helical feeding combustion boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20140201 |