CN201487939U - Dual-drum pulverized anthracite burning device - Google Patents
Dual-drum pulverized anthracite burning device Download PDFInfo
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- CN201487939U CN201487939U CN2009200606853U CN200920060685U CN201487939U CN 201487939 U CN201487939 U CN 201487939U CN 2009200606853 U CN2009200606853 U CN 2009200606853U CN 200920060685 U CN200920060685 U CN 200920060685U CN 201487939 U CN201487939 U CN 201487939U
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Abstract
The utility model relates to a dual-drum pulverized anthracite burning device comprising a boiler press body and an auxiliary burning device, wherein the auxiliary burning device comprises a cyclone burning chamber and a burnout chamber, one side of the burnout chamber is communicated with the cyclone burning chamber, the other side of the burnout chamber is connected with a boiler furnace interface of the boiler press body, and both sides of the boiler press body are respectively connected with the auxiliary burning device. The dual-drum pulverized anthracite burning device has high burning efficiency and low operation fee, increases the utilization rate of the boiler press body, reduces operation cost, can use coal blocks and coal powder, has no need to change the original structure of a boiler, has no any reforming risks, can not influence production, is environment-friendly and can greatly reduce the discharge of major pollutants.
Description
Technical field
The utility model belongs to the boiler technology field, particularly a kind of bitubular anchracite duff burner.
Background technology
China is energy resource consumption big country, and in the wastage in bulk or weight of the national energy, coal occupies very big proportion, reaches more than 75%.Energy restructuring is all being carried out in countries in the world, saving the utilization of the existing energy to greatest extent, and alleviates the environmental pollution that increases the weight of day by day.The energy-saving and emission-reduction situation is quite severe for China, and country also addresses the above problem trying every possible means by every possible means.
In Industrial Boiler, still adopt grate furnace in a large number at present, grate furnace burns lump coal (bituminous coal), and broken coal, particularly anchracite duff can't burn.Because the price comparison costliness of lump coal (bituminous coal), and on the chain furnace grate furnace, be difficult to grill thoroughly, the boiler heat loss due to incomplete combustion is more serious, therefore, grate furnace is carried out the coal displacement and substitutes energy-conservation significant.
Anthracite is the highest special coal of degree of metamorphism, and the characteristics that with respect to other coals, have fixed carbon content height (more than 80%), fugitive constituent are low, hardness is big, burning the time is not smoldered and burning-point is high have higher caloric value.Limited by the powder manufacturing apparatus cost, coal dust firing only is used for station boiler, but present breakthrough along with powder-making technique, cost descends significantly, makes coal dust firing also can be applicable to Industrial Boiler, replaces coal cinder with anchracite duff on Industrial Boiler, low price not only, efficiency of combustion also improves greatly, can save operating cost more than 30%, produces tangible economic benefit.
Therefore, design a kind ofly under former boiler pressurized body part is not done to change, realize that the auxiliary device that anchracite duff replaces original lump coal to act as a fuel is most important.
The utility model content
The purpose of this utility model is the deficiency at existing industry boiler energy-conservation reduction of discharging aspect, being provided at former Industrial Boiler pressurized body part does not do to change down, realize that anchracite duff replaces original lump coal to act as a fuel, can further optimize a kind of bitubular anchracite duff burner of the efficiency of combustion of boiler simultaneously.
The utility model is achieved in that a kind of bitubular anchracite duff burner, comprise boiler pressurized body and assisted combustion device, described assisted combustion device comprises whirlwind tube combustion chamber and secondary furnace, secondary furnace one side is connected with whirlwind tube combustion chamber and communicates, and the opposite side of secondary furnace is connected with the burner hearth interface of boiler pressurized body; Both sides at boiler pressurized body are connected with assisted combustion device respectively.
The top of described whirlwind tube combustion chamber is provided with pulverized coal gun, sidewall above the whirlwind tube combustion chamber is provided with tangent air inlet, the inwall place of the corresponding secondary furnace port in whirlwind tube combustion chamber is provided with downward-sloping flue gas guide plate, guide plate makes whirlwind tube combustion chamber and secondary furnace form exhaust gases passes, and the bottom of whirlwind tube combustion chamber is provided with the sediment outlet.
Described tangent air inlet comprises tangent air inlet and secondary tangent air inlet, and tangent air inlet and secondary tangent air inlet are to arrange successively from top to bottom in the both sides of combustion chamber wall surface.
It is conical that the bottom of described combustion chamber is, and the below of sediment outlet is provided with detritus tank.
Be provided with skimming device in described secondary furnace and the import department that whirlwind tube combustion chamber is connected.
Described skimming device is the pushing off the slag pipe, and the pushing off the slag pipe links to each other with the soft water pond of outside by water circulating pump and forms circulation.
The downward-sloping angle of described flue gas guide plate is 60 °.
The anchracite duff input pipe of described pulverized coal gun is connected with air and powder mixer.Air and powder mixer mixes anchracite duff with air, so that fully burning.
The utlity model has following beneficial effect: 1. efficiency of combustion height: the efficiency of combustion that anchracite duff mixes with air can reach more than 95%, make the thermal efficiency of no coal pulverized-coal fired boiler can reach 85%, with fired coal combustion efficient less than 85%, the thermal efficiency is compared less than 70%, efficient improves greatly; 2. operating cost is low: the anchracite duff price is lower than the bituminous coal coal cinder, and coal-fired powder boiler efficiency will be higher than coal-fired piece boiler, adopts anchracite duff to replace the bituminous coal coal cinder, can save operating cost more than 30%; 3. adopt two combustion systems of bispin air duct combustion chamber, overcome the deficiency that there is stove pressurized body utilization rate in single whirlwind tube combustion chamber only is set, improve the utilization rate of boiler pressurized body, reduce operating cost; 4. coal cinder and coal dust are dual-purpose, need not to change the original structure of boiler, can realize that coal cinder and coal dust are dual-purpose, do not have any transformation risk, provide multiple choices to the user, need not blowing out in the time of repacking and install, and do not influence production; During the transformation, keep original combustion apparatus, traveling-grate stoker and coal bunker are not done change, and during the precombustion chamber fabrication and installation, former boiler is work as usual, does not influence production; 5. environmental protection is good: compare with burning smoke coal coal cinder, fire the discharging that smokeless bituminous coal can reduce dust greatly, because the raising of efficient, discharge of major pollutant also greatly reduces.
Description of drawings
Fig. 1 is a kind of structural representation of bitubular anchracite duff burner.
Fig. 2 is a kind of whirlwind tube combustion chamber cross-sectional structure schematic diagram of bitubular anchracite duff burner.
Wherein, 1 is pulverized coal gun; 2 are tangential air port once; 3 is the tangential air port of secondary; 4 is whirlwind tube combustion chamber; 5 is the flue gas guide plate; 6 are the pushing off the slag pipe; 7 is secondary furnace; 8 is detritus tank; 9 is circulating pump; 10 is the soft water pond; 11 are the sediment outlet; 12 is boiler pressurized body; 13 for removing cinder notch; 14 is the anchracite duff input pipe; 15 is air and powder mixer.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
A kind of bitubular anchracite duff burner, as depicted in figs. 1 and 2, comprise boiler pressurized body 12 and assisted combustion device, described assisted combustion device comprises whirlwind tube combustion chamber 4 and secondary furnace 7, secondary furnace 7 one sides are connected with whirlwind tube combustion chamber 4 and communicate, and the opposite side of secondary furnace 7 is connected with the burner hearth interface of boiler pressurized body 12; Both sides at boiler pressurized body 12 are connected with assisted combustion device respectively.Whirlwind tube combustion chamber 4 can adopt vertical structure to place, and secondary furnace 7 adopts horizontal type structure to place.The top of whirlwind tube combustion chamber 4 is provided with pulverized coal gun 1, and the anchracite duff input pipe 14 of pulverized coal gun 1 is connected with air and powder mixer 15.Air and powder mixer 15 is that anchracite duff on the funnel on it is fully mixed with air, and then is transported to pulverized coal gun 1 and spurts in the whirlwind tube combustion chamber 4 and burn.On whirlwind tube combustion chamber 4, connect with secondary furnace 7 and to be respectively equipped with tangent air inlet 2 and secondary tangent air inlet 3 on the sidewall of the top of port mutually, tangent air inlet 2 and secondary tangent air inlet 3 be for arranging successively from top to bottom, and be arranged in the both sides of combustion chamber wall surface.The inwall of whirlwind tube combustion chamber 4 corresponding secondary furnace 7 ports is provided with downward-sloping flue gas guide plate 5, and flue gas guide plate 5 angles of inclination are generally about 60 °, and flue gas guide plate 5 forms exhaust gases passes with secondary furnace 7.The bottom of whirlwind tube combustion chamber 4 is conical, and its bottom is provided with sediment outlet 11, and the below of sediment outlet 11 is provided with detritus tank 8.Import department in secondary furnace 7 is provided with skimming device 6, and skimming device 6 can be the pushing off the slag pipe, and the pushing off the slag pipe links to each other with the soft water pond 10 of outside by water circulating pump 9 and forms water circulation system; The secondary furnace tail end is provided with the boiler furnace interface, is connected with boiler 12 burner hearths by the boiler furnace interface, and is provided with except that cinder notch 11 below the secondary furnace afterbody.The boiler pressurized body 12 that is suitable for can be the grate firing type boiler.
Ruuning situation of the present utility model is as follows: anchracite duff is rotated at a high speed by pulverized coal gun 1 by air and powder mixer 15 and sprays in the whirlwind tube combustion chamber 4, and its combustion space is the fireball that rotates at a high speed, and burning velocity is tens times of plain cylindrical furnace.The burning anchracite duff needed air that burns, be divided into the tangential wind of several parts, the tangential wind of secondary that once tangential wind that promptly once tangential air port 2 enters and the tangential air port 3 of secondary enter, the burning anchracite duff needed portion of air of burning tangentially enters whirlwind tube combustion chamber 4 by tangential air port 1 once, does rotation at a high speed.Once tangential air port 2 is in a distance, anchracite duff spray gun downstream; At a high speed the air-flow of rotation entrainments whirlwind tube combustion chamber 4 front ends with high-temperature flue gas in the whirlwind tube combustion chamber, has guaranteed that whirlwind tube combustion chamber 4 front ends can keep sufficiently high temperature, makes anchracite duff be able to Fast Heating, the stable ignition burning; Anchracite duff after catching fire 3 places, the tangential air port of needed another part air secondary of fully burning, tangentially enter whirlwind tube combustion chamber from furnace wall, whirlwind tube combustion chamber, rotation makes and forms strong vorticla motion and complicated axial flow in the whirlwind tube combustion chamber 4 at a high speed, as shown in Figure 2, combustion process is more red-hot, the high-temperature flue gas that the anchracite duff burning produces is turned back under the effect of flue gas guide plate 5 in the bottom of whirlwind tube combustion chamber 4 and is entered the 7 further afterburnts of burning chamber, enter the burner hearth of boiler, the time of staying reached more than 10 seconds in burning chamber 7 and boiler furnace, and the burnout rate of guaranteeing anchracite duff is more than 95%.Because cyclone combustion chamber 4 is not arranged heating surface, so ignition temperature is high, far surpass ash fusion point.A large amount of ash contents are molten into liquid state, flow into detritus tank 8 along combustion chamber wall surface, it can not be entered in the boiler, in order to avoid the serious dust stratification of boiler heating surface influences boiler output.This kind caught the slag mode can remove ash content more than 80%.Remaining tiny flying dust can directly be taken away with flue gas, does not deposit in the boiler again, therefore can not influence boiler output; Simultaneously, water-cooling pattern can be adopted in whirlwind tube combustion chamber 4, is equivalent to increase the boiler evaporating heating surface, and boiler output is further improved.
The porch of secondary furnace 7 is provided with pushing off the slag pipe 6, and the slag in the secondary furnace is discharged by removing cinder notch 11.The pushing off the slag pipe adopts independent water circulation system, circulate between pushing off the slag pipe and softened water tank with the water of water circulating pump 9 the softening pond 10 of boiler, like this under the prerequisite of not destroying former water supply system, effectively utilized the heat energy of slagging-off, behind the pushing off the slag pipe, the content of dust reduces greatly in the high-temperature flue gas that burning produces, and can satisfy the normal operation of existing boiler.
The cooling water that detritus tank is 8 li cools off lime-ash on the one hand, has also played the effect of sealed combustion chamber on the other hand, and the combustion position in the combustion chamber is little negative-pressure firing like this, thereby has guaranteed efficiency of combustion.Whirlwind tube combustion chamber lower space is intended adopting and is built ground by laying bricks or stones, and is provided with breast hole, access door, conveniently clears up and keeps in repair.
Claims (8)
1. bitubular anchracite duff burner, comprise boiler pressurized body and assisted combustion device, described assisted combustion device comprises whirlwind tube combustion chamber and secondary furnace, and secondary furnace one side is connected with whirlwind tube combustion chamber and communicates, and the opposite side of secondary furnace is connected with the burner hearth interface of boiler pressurized body; It is characterized in that: the both sides at boiler pressurized body are connected with assisted combustion device respectively.
2. according to the described a kind of bitubular anchracite duff burner of claim 1, it is characterized in that: the top of described whirlwind tube combustion chamber is provided with pulverized coal gun, sidewall above the whirlwind tube combustion chamber is provided with tangent air inlet, the inwall place of the corresponding secondary furnace port in whirlwind tube combustion chamber is provided with downward-sloping flue gas guide plate, guide plate makes whirlwind tube combustion chamber and secondary furnace form exhaust gases passes, and the bottom of whirlwind tube combustion chamber is provided with the sediment outlet.
3. according to the described a kind of bitubular anchracite duff burner of claim 2, it is characterized in that: described tangent air inlet comprises tangent air inlet and secondary tangent air inlet, and tangent air inlet and secondary tangent air inlet are to arrange successively from top to bottom in the both sides of combustion chamber wall surface.
4. according to the described a kind of bitubular anchracite duff burner of claim 2, it is characterized in that: the bottom of described combustion chamber is conical, and the below of sediment outlet is provided with detritus tank.
5. according to the described a kind of bitubular anchracite duff burner of claim 2, it is characterized in that: be provided with skimming device in described secondary furnace and the import department that whirlwind tube combustion chamber is connected.
6. according to the described a kind of bitubular anchracite duff burner of claim 5, it is characterized in that: described skimming device is the pushing off the slag pipe, and the pushing off the slag pipe links to each other with the soft water pond of outside by water circulating pump and forms circulation.
7. according to the described a kind of bitubular anchracite duff burner of claim 2, it is characterized in that: the downward-sloping angle of described flue gas guide plate is 60 °.
8. according to the described a kind of bitubular anchracite duff burner of claim 2, it is characterized in that: the anchracite duff input pipe of described pulverized coal gun is connected with air and powder mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200606853U CN201487939U (en) | 2009-07-17 | 2009-07-17 | Dual-drum pulverized anthracite burning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200606853U CN201487939U (en) | 2009-07-17 | 2009-07-17 | Dual-drum pulverized anthracite burning device |
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| CN201487939U true CN201487939U (en) | 2010-05-26 |
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| CN2009200606853U Expired - Fee Related CN201487939U (en) | 2009-07-17 | 2009-07-17 | Dual-drum pulverized anthracite burning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017156824A1 (en) * | 2016-03-17 | 2017-09-21 | 西安交通大学 | Lignite semi-coke oxygen deficient combustion boiler |
-
2009
- 2009-07-17 CN CN2009200606853U patent/CN201487939U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017156824A1 (en) * | 2016-03-17 | 2017-09-21 | 西安交通大学 | Lignite semi-coke oxygen deficient combustion boiler |
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| 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: 20100526 Termination date: 20120717 |