CN201322439Y - Pulverized-coal burnt horizontal-type hot fume generating furnace - Google Patents
Pulverized-coal burnt horizontal-type hot fume generating furnace Download PDFInfo
- Publication number
- CN201322439Y CN201322439Y CNU2008202336591U CN200820233659U CN201322439Y CN 201322439 Y CN201322439 Y CN 201322439Y CN U2008202336591 U CNU2008202336591 U CN U2008202336591U CN 200820233659 U CN200820233659 U CN 200820233659U CN 201322439 Y CN201322439 Y CN 201322439Y
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- CN
- China
- Prior art keywords
- flue gas
- hot flue
- gas producer
- hot
- front wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a pulverized-coal burnt horizontal-type hot fume generating furnace which comprises a front wall (11), a rear wall (12), a side wall (13) and at least one pulverized coal burner (2). The pulverized coal burner is used for burning pulverized coal which enters the furnace, and each wall is connected with a top part (15). The generating furnace is characterized in that the generating furnace further comprises at least one air preheater (9) which heats combustion air by utilizing hot fume generated by the hot fume generating furnace, the air preheater comprises a combustion air inlet (8) and a combustion air outlet (10), and the combustion air which comes out from the combustion air outlet (10) enters the fume generating furnace by the pulverized coal burner (2).
Description
Technical field
The utility model relates to a kind of hot flue gas generating means, particularly relates to a kind of horizontal hot flue gas producer of combusting coal fines, and this hot flue gas producer is generally used for producing hot flue gas with dried material, for example low-order coal etc.
Background technology
Dry materials is the technical process that generally adopts in numerous industrial circles such as chemical industry, mining industry, metallurgy, adopts hot fluid as the heat drying medium usually, for example hot flue gas or hot-air.At present, the thermal source of generation high-temperature gas heat drying medium is the calory burning that adopts gas combustion or liquid burning substantially in the related process process.Adopt gaseous fuel or liquid fuel because shortage of resources and costing an arm and a leg, it is higher that hot fluid produces cost.China is one of relatively abundant country of coal resources in the world, coal reserves is much larger than the reserves of oil and natural gas, therefore, adopt coal-fired hot flue gas generating means to produce the hot flue gas that is used for dry materials more, for example use grate stove or the fluid bed raw coal that directly burns.But mechanical imperfect combustion heat loss and chemical imperfect combustion heat loss are bigger in the combustion process of the raw coal that directly burns, and wayward.Therefore the hot flue gas producer that adopts coal-fired powder is also arranged, and promptly is that the very thin coal dust that meets size is sent into the combustion chamber with combustion air through coal burner, burns under suspended state, can increase the surface area that pulverized coal particle contacts with air, overheavy firing.This burning makes that the interior temperature of stove is higher, and ratio of combustion is more complete, and efficiency of combustion is higher.But when using coal dust to act as a fuel, mainly there is following problem in the hot flue gas producer of existing coal-fired powder:
(1) carrying breeze airflow secretly directly adopts cold air combustion-supporting, this for volatile matter content lower do not allow fire-hazardous fuel, cause the difficulty of catching fire, combustion instability and efficiency of combustion to descend easily, even in process of coal combustion, need to throw the steady combustion of oil, cause hot flue gas producer operating cost to raise;
(2) use external thermal source warm-up combustion-supporting air, increased the operating cost of hot flue gas producer;
(3) directly adopt cold air as hot flue gas temperature adjustment wind, flue gas loss is big, greatly reduces the thermal efficiency of hot flue gas producer, and simultaneously, Fuel Consumption increases;
(4) adopt cold air as hot flue gas temperature adjustment wind, can improve the oxygen content in the flue gas, for the dry heat poor stability, there is potential safety hazard in easily spontaneous combustion or during to the more sensitive material of oxygen composition;
(5) this coal-fired powder hot-blast stove mostly is approximate adiabatic furnace, the slagging scorification phenomenon that ubiquity is serious.
The utility model content
The purpose of this utility model provides a kind of horizontal hot flue gas producer of combusting coal fines, and wherein coal dust and air-flow can catch fire rapidly in entering stove, the stability and high efficiency burning.
The utility model provides a kind of horizontal hot flue gas producer of combusting coal fines, comprise front wall, back wall and side wall, and be used at least one coal burner that coal dust enters the stove internal combustion, each wall is connected with the top, it is characterized in that, at least one air preheater that also comprises the hot flue gas heating combustion air that produces with hot flue gas producer, described air preheater comprises combustion air inlet and combustion air outlet, exports from combustion air) combustion air that comes out enters described flue gas producer by coal burner.According to further disclosed coal burner of the present utility model is vortex burner, and is arranged on the front wall of hot flue gas producer.
In addition, a plurality of flue gas spouts are set also, are used to admit at least a portion flue gas of discharging to turn back to described hot flue gas producer from drier.Described a plurality of flue gas spout can comprise front wall flue gas spout, and these front wall flue gas spouts are arranged on the front wall of hot flue gas producer, is positioned at the front wall of hot flue gas producer and near the position of intersection at top, and arranges along the parallel lines of this intersection.The arrangement of this front wall flue gas spout is the slagging scorification for the top that prevents the stove inwall.In order to make anti-slag better effects if, form the slope that tilts to front wall at the back wall of the hot flue gas producer of embodiment of the present utility model.In addition, the flue gas spout also comprises furnace bottom flue gas spout and/or side wall flue gas spout.
According to an example of the present utility model, also comprise the hearth deslagging mouth that is used to deposit the ash bucket of flying dust and is arranged on the flue gas producer.Further, described ash bucket is arranged on the below of air preheater.In addition, air preheater also is furnished with the compressed air soot-blowing device, to remove the flying dust in the flue gas better.
Hot flue gas producer of the present utility model has improved efficiency of combustion, has reduced fume emission loss and Fuel Consumption, thereby improves the overall thermal efficient of hot flue gas producer.
Description of drawings
Below, describe embodiment of the present utility model in conjunction with the accompanying drawings in detail, wherein:
Fig. 1 is the side view of horizontal hot flue gas producer of the present utility model;
Fig. 2 is the front view of the hot flue gas producer of Fig. 1;
Fig. 3 is the cutaway view of the hot flue gas producer A-A along the line of Fig. 1.
Reference numeral
1. furnace bottom flue gas spout
2. coal burner
3. front wall flue gas spout
4. side wall flue gas spout
5. drier
6. ash bucket
7. hearth deslagging mouth
8. combustion air enters the mouth
9. air preheater
10. combustion air outlet
11. front wall
12. back wall
13. side wall
14. furnace bottom
15. top
The specific embodiment
For the utility model is described better, further specify the utility model below by concrete example.
Refer now to Fig. 1, show the embodiment of hot flue gas producer of the present utility model.Described hot flue gas producer is horizontal layout, and the stove inwall can be laid for the corrosion-proof fire-resistant brick, and outer wall is laid insulating brick and steel panel; The top structure of hot flue gas producer is an arch, and box hat supports; Burner and accident breast hole (not shown) are seen in the sidewall of combustion chamber setting, and the top 15 or the side wall 13 of hot flue gas producer can design explosion proof door.
With reference to figure 1, hot flue gas producer of the present utility model comprises at least one coal burner 2.Coal dust enters hot flue gas producer by described coal burner 2 and burns under the carrying of a wind.Coal burner 2 can be a spiral coal powder burner.Each spiral coal powder burner is that wind-force is adjustable.One time wind carries the wind air duct of coal dust by described burner, arranges central tube in the wind air duct, arranges torch oil gun in the central tube, and one time vane shape channel outer wall is arranged guiding device, and for example the spiral raised line is weak eddy flow; Secondary wind is tangential or the caused eddy flow of axial blade, the swirl vane adjustable angle, and outlet is designed to the fine jade mouth.Ignition phase torch oil gun firing coal-dust, oil-break after the burner hearth preheating, it is combustion-supporting to need not to throw oil when normally moving.Fig. 2 shows 4 coal burners 2 and is arranged on alignedly on the front wall of hot flue gas producer in twos, and opposite in the eddy flow rotation direction with the coal burner in the delegation 2, and is identical in the eddy flow rotation direction of the same coal burner that lists 2.The type, quantity and the arrangement that should be appreciated that described coal burner all can change.
Coal dust that enters from burner and combustion air are in the burner hearth internal combustion of hot flue gas producer, and the hot flue gas that burning produces will be used to heat combustion air through air preheater 9 after temperature adjustment.Air preheater 9 can be a tubular air preheater.As shown in Figure 3, cold air enters air preheater 9 from the combustion air inlet 8 of air preheater 9, and hot flue gas adds hot-air through air preheater 9.In order to obtain the temperature information of combustion air, can combustion air enter the mouth 8 and outlet 10 temperature point is set respectively.Combustion air after heating enters in the hot flue gas producer combustion-supporting by coal burner.Usually the combustion air through heating will be divided into two strands, and one is as a wind that carries coal dust, and one is as secondary wind.
Be sent through the hot flue gas of air preheater 9 and be used for various uses, for example be sent to and treat dry matter in the drier 5 and carry out drying.At least a portion flue gas that drier 5 is discharged can turn back in the hot flue gas producer by the flue gas spout.Adjust the position and the air inducing direction of flue gas spout, can be used for preventing taking place in the stove slagging scorification and/or be used to regulate the flue-gas temperature that hot flue gas producer produces.Fig. 2 shows an embodiment of the position of flue gas spout, five front wall flue gas spouts 3 are arranged on the front wall of hot flue gas producer, and near the position that is positioned at the intersection of the top of hot flue gas producer and front wall is arranged along the parallel lines of described intersection, make the flue gas that sprays into from these 5 front wall flue gas spouts 3 can be ejected into the back wall always, thereby formed gas-barrier layer between the wall portion of burning in stove and furnace roof, thereby stoped the slagging scorification of the wall portion of hot flue gas producer furnace roof effectively.As shown in Figure 2, more preferably, the back wall one-tenth of hot flue gas producer makes the flue gas that is ejected into the back wall in the downward hot flue gas mixing temperature adjustment that produces with burning of back wall deflection to the slope that the front wall direction tilts, and does not weaken gas-barrier layer and effect of combustion and can directly not reflect.The flue gas spout can be arranged on each correct position of hot flue gas producer, and for example, as shown in Figure 1, the flue gas spout comprises and also comprises furnace bottom flue gas spout 1 and side wall flue gas spout 4.
As shown in Figure 1, at furnace bottom slag-drip opening 7 is set and is used for the residue that burning generates is discharged out of the furnace, ash bucket 6 can also be set be used to deposit flying dust.Ash bucket 6 preferably can be arranged on the below of air preheater 9.In addition, in air preheater, the compressed air soot-blowing device can also be set, blow down the dust stratification that influences conductive thermal exchange, to increase the heat exchange effect.
Claims (10)
1. the horizontal hot flue gas producer of a combusting coal fines, comprise front wall (11), back wall (12) and side wall (13), and be used at least one coal burner (2) that coal dust enters the stove internal combustion, each wall is connected with top (15), it is characterized in that, at least one air preheater (9) that also comprises the hot flue gas heating combustion air that produces with hot flue gas producer, described air preheater comprises combustion air inlet (8) and combustion air outlet (10), and the combustion air that comes out from combustion air outlet (10) enters described flue gas producer by coal burner (2).
2. hot flue gas producer according to claim 1 is characterized in that described coal burner (2) is a vortex burner.
3. hot flue gas producer according to claim 1 and 2 is characterized in that, described coal burner (2) is arranged on the front wall (11) of hot flue gas producer.
4. hot flue gas producer according to claim 1 is characterized in that, also comprises a plurality of flue gas spouts, is used for admitting at least a portion flue gas of discharging from drier (5) to turn back to described hot flue gas producer.
5. hot flue gas producer according to claim 4, it is characterized in that, described flue gas spout comprises front wall flue gas spout (3), described front wall flue gas spout (3) is arranged on the front wall (11) of hot flue gas producer, be positioned near front wall (11) position of hot flue gas producer, and arrange along the parallel lines of described intersection with the intersection at top (15).
6. hot flue gas producer according to claim 1 is characterized in that, the back wall (12) of described hot flue gas producer forms the slope to front wall (11) inclination.
7. hot flue gas producer according to claim 4 is characterized in that, described flue gas spout comprises furnace bottom flue gas spout (1) and/or side wall flue gas spout (4).
8. hot flue gas producer according to claim 1 is characterized in that, also comprises ash bucket (6) that is used to deposit flying dust and the hearth deslagging mouth (7) that is arranged on the flue gas producer.
9. hot flue gas producer according to claim 8 is characterized in that described ash bucket (6) is arranged on the below of air preheater.
10. hot flue gas producer according to claim 1 is characterized in that described air preheater (9) is provided with the compressed air soot-blowing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202336591U CN201322439Y (en) | 2008-12-24 | 2008-12-24 | Pulverized-coal burnt horizontal-type hot fume generating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202336591U CN201322439Y (en) | 2008-12-24 | 2008-12-24 | Pulverized-coal burnt horizontal-type hot fume generating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201322439Y true CN201322439Y (en) | 2009-10-07 |
Family
ID=41159820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202336591U Expired - Fee Related CN201322439Y (en) | 2008-12-24 | 2008-12-24 | Pulverized-coal burnt horizontal-type hot fume generating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201322439Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425786A (en) * | 2011-11-24 | 2012-04-25 | 舒瑞 | Combustion method and device for pulverized coal fired boiler |
| CN102901213A (en) * | 2012-10-31 | 2013-01-30 | 山西蓝天环保设备有限公司 | Superfine pulverized-coal combustion hot water boiler |
| CN103322677A (en) * | 2013-07-16 | 2013-09-25 | 鸡西市星光热风炉制造有限公司 | Energy-saving environment-friendly coal-fueled hot air furnace |
| CN103791608A (en) * | 2012-10-31 | 2014-05-14 | 辽宁绿地能源煤业有限公司 | Special hot flue gas generator for pulverized lignite |
| CN104197320A (en) * | 2014-09-05 | 2014-12-10 | 中冶京诚工程技术有限公司 | Pulverized coal combustion and warming furnace |
-
2008
- 2008-12-24 CN CNU2008202336591U patent/CN201322439Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425786A (en) * | 2011-11-24 | 2012-04-25 | 舒瑞 | Combustion method and device for pulverized coal fired boiler |
| CN102901213A (en) * | 2012-10-31 | 2013-01-30 | 山西蓝天环保设备有限公司 | Superfine pulverized-coal combustion hot water boiler |
| CN103791608A (en) * | 2012-10-31 | 2014-05-14 | 辽宁绿地能源煤业有限公司 | Special hot flue gas generator for pulverized lignite |
| CN103791608B (en) * | 2012-10-31 | 2016-11-23 | 辽宁绿地能源煤业有限公司 | The special heat smoke producer of brown coal coal dust |
| CN103322677A (en) * | 2013-07-16 | 2013-09-25 | 鸡西市星光热风炉制造有限公司 | Energy-saving environment-friendly coal-fueled hot air furnace |
| CN103322677B (en) * | 2013-07-16 | 2016-04-20 | 鸡西市星光热风炉制造有限公司 | Energy saving and environment friendly coal-fired hot-blast stove |
| CN104197320A (en) * | 2014-09-05 | 2014-12-10 | 中冶京诚工程技术有限公司 | Pulverized coal combustion and warming furnace |
| CN104197320B (en) * | 2014-09-05 | 2016-08-24 | 中冶京诚工程技术有限公司 | Coal dust firing heating furnace |
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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: 20091007 Termination date: 20171224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |