CN102494543A - Tunnel kiln waste heat recovery device and method - Google Patents
Tunnel kiln waste heat recovery device and method Download PDFInfo
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- CN102494543A CN102494543A CN2011104104788A CN201110410478A CN102494543A CN 102494543 A CN102494543 A CN 102494543A CN 2011104104788 A CN2011104104788 A CN 2011104104788A CN 201110410478 A CN201110410478 A CN 201110410478A CN 102494543 A CN102494543 A CN 102494543A
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- waste heat
- pipeline
- flue gas
- temperature flue
- tunnel kiln
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention provides a tunnel kiln waste heat recovery device, which comprises a waste heat boiler, a low-temperature flue gas pipeline, a high-temperature flue gas pipeline and a circulating fan, wherein one end of the low-temperature flue gas pipeline is connected with a cooling area kiln vehicle; one end of the high-temperature flue gas pipeline is connected with the cooling area kiln vehicle and the other end of the high-temperature flue gas pipeline is connected with the waste heat boiler; and the circulating fan is connected with the other end of the low-temperature flue gas pipeline and is connected with the waste heat boiler. The invention also provides a tunnel kiln waste heat recovery method. By the tunnel kiln waste heat recovery device, latent heat of a sintered product in the cooling area is recovered, and the sintered product is prevented from being subjected to water spray cooling; therefore, the product quality is improved, and water consumption and environmental pollution are reduced; meanwhile, steam or hot water generated by the waste heat boiler can be used for power generation, heating or technical heat, and the waste heat recovery device is energy-saving and emission-reducing.
Description
Technical field
The present invention relates to a kind of using residual heat from kiln furnace and reclaim the field, relate in particular to a kind of device for recovering waste heat of tunnel kiln and recovery method thereof.
Background technology
At present; Tunnel cave needs combustion fuel in process of production; In this process, can produce a large amount of waste heat flue gases, the flue-gas temperature of discharging the kiln body in the existing tunnel kiln after the fuel combustion can reach 400 ℃～500 ℃, and this waste heat does not obtain good use in process of production; Be discharged in vain in the air, caused a large amount of wastes of heat; In addition, the product that the process of passing through tunnel klining becomes has very high temperature and need cool off, and adopts the water spray cooling to make usually and burns till the product cooling, and this type of cooling not only has influence on the quality of product, has consumed great amount of water resources simultaneously, has produced large amount of sewage.
Summary of the invention
Technical problem to be solved by this invention has provided a kind of device for recovering waste heat of tunnel kiln and recovery method thereof, to solve that residual heat of tunnel kiln does not obtain fine utilization and the product type of cooling that tunnel cave is burnt till problem improperly.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of device for recovering waste heat of tunnel kiln is provided, has comprised: waste heat boiler; The low-temperature flue gas pipeline, an end of said low-temperature flue gas pipeline is connected with the cooling zone kiln car; The high-temperature flue gas pipeline, an end of said high-temperature flue gas pipeline is connected with said cooling zone kiln car, and the other end of said high-temperature flue gas pipeline is connected with said waste heat boiler; Circulating fan is connected with the other end of said low-temperature flue gas pipeline, and is connected with said waste heat boiler.
Further, device for recovering waste heat of tunnel kiln also comprises chimney, and said chimney is connected with said circulating fan.
Further, device for recovering waste heat of tunnel kiln also comprises first pipeline, and an end of said first pipeline is connected with the top of thermal treatment zone kiln car, and the other end of said first pipeline is connected with the combustion chamber of said thermal treatment zone kiln car; Air-introduced machine connects said waste heat boiler; Second pipeline, an end of said second pipeline is connected with said combustion chamber, and the other end of said second pipeline is connected with said waste heat boiler.
Further, device for recovering waste heat of tunnel kiln also comprises the combustion-supporting gas pipeline, is connected with said combustion chamber.
Further, device for recovering waste heat of tunnel kiln also comprises discharge duct, and said discharge duct is connected with said air-introduced machine.
The present invention also provides a kind of residual heat of tunnel kiln recovery method, comprising: inert gas is sent in the kiln car of cooling zone through the low-temperature flue gas pipeline under the effect of circulating fan; Said inert gas absorbs the heat of the material in the kiln car of said cooling zone; Said inert gas gets into waste heat boiler through the high-temperature flue gas pipeline; Getting into said circulating fan after said inert gas comes out from said waste heat boiler circulates.
Further, said inert gas under the effect of said circulating fan through smoke stack emission in air.
Further, said residual heat of tunnel kiln recovery method also comprises: accumulate in the combustion chamber that the fuel gas at the top of thermal treatment zone kiln car introduces said thermal treatment zone kiln car through first pipeline and burn; Gas fume after burning is introduced waste heat boiler through second pipeline; Said flue gas is discharged from said waste heat boiler through air-introduced machine.
Further, said residual heat of tunnel kiln recovery method also comprises toward the interior combustion air that feeds of combustion-supporting gas pipeline.
Further, said residual heat of tunnel kiln recovery method also comprises the discharge duct discharge of said flue gas from being connected with said air-introduced machine.
Device for recovering waste heat of tunnel kiln provided by the invention; Through being provided with of low-temperature flue gas pipeline, high-temperature flue gas pipeline, waste heat boiler and circulating fan the latent heat that burns till product in the cooling zone is reclaimed; Avoided burning till the product cooling of spraying water, thereby improved the quality of product, reduced water consumption and the pollution of environment; The steam or the hot water of waste heat boiler generation simultaneously can be used for generating, heating or Process heat, promptly energy-conservation reduction of discharging again.
Further, first pipeline that device for recovering waste heat of tunnel kiln comprises, air-introduced machine and second pipeline can utilize tunnel cave thermal treatment zone discharged flue gas waste heat, neither influence the production of tunnel kiln owner's technology, have also improved the utilization ratio of fuel.
Residual heat of tunnel kiln recovery method provided by the invention; Circulate between circulating fan, low-temperature flue gas pipeline, high-temperature flue gas pipeline and waste heat boiler through inert gas; And the latent heat that burns till product in the cooling zone is reclaimed; The latent heat rate of recovery of burning till product is high, and recovery method is simple, in the process that reclaims, has promptly accomplished burning till the cooling requirement of product; Improve the cooling effectiveness of tunnel cave system, again the heat that reclaims has been used for other purposes such as generating, heating through waste heat boiler simultaneously.
Further, in the residual heat of tunnel kiln recovery method, also comprise, the high-temperature flue gas that the thermal treatment zone produces is drawn the heat in the flue gas through waste heat boiler, produce hot water or steam, be used for generating, refrigeration, heating and technical process with heat etc.
Description of drawings
Fig. 1 is the cross-sectional view of the device for recovering waste heat of tunnel kiln that provides of the embodiment of the invention one;
Fig. 2 is the cross-sectional view of the device for recovering waste heat of tunnel kiln that provides of the embodiment of the invention two;
Fig. 3 is the flow chart of steps of the residual heat of tunnel kiln recovery method that provides of the embodiment of the invention one;
Fig. 4 is the flow chart of steps of the residual heat of tunnel kiln recovery method that provides of the embodiment of the invention two;
Fig. 5 is the cross-sectional view of the tunnel cave system that provides of the embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment a kind of device for recovering waste heat of tunnel kiln and recovery method thereof that the present invention proposes are done further explain.According to following explanation and claims, advantage of the present invention and characteristic will be clearer.What need explanation is, accompanying drawing all adopts the form of simplifying very much and all uses non-ratio accurately, only is used for conveniently, the purpose of the aid illustration embodiment of the invention lucidly.
Core concept of the present invention is; Device for recovering waste heat of tunnel kiln provided by the invention reclaims the latent heat that burns till product in the cooling zone through being provided with of low-temperature flue gas pipeline, high-temperature flue gas pipeline, waste heat boiler and circulating fan, has avoided burning till the product cooling of spraying water; Thereby improved the quality of product; Reduced water consumption and to the pollution of environment, the steam or the hot water that produce of waste heat boiler can be used for generating, heating or Process heat simultaneously, promptly energy-conservationly reduces discharging again.And residual heat of tunnel kiln recovery method provided by the invention; Circulate between circulating fan, low-temperature flue gas pipeline, high-temperature flue gas pipeline and waste heat boiler through inert gas; And the latent heat that burns till product in the cooling zone is reclaimed; The latent heat rate of recovery of burning till product is high, and recovery method is simple, in the process that reclaims, has promptly accomplished burning till the cooling requirement of product; Improve the cooling effectiveness of tunnel cave system, again the heat that reclaims has been used for other purposes such as generating, heating through waste heat boiler simultaneously
Fig. 1 is the cross-sectional view of the device for recovering waste heat of tunnel kiln that provides of the embodiment of the invention one, and the device for recovering waste heat of tunnel kiln that provides comprises: waste heat boiler 11; Low-temperature flue gas pipeline 12, an end of said low-temperature flue gas pipeline 12 is connected with cooling zone kiln car 13; High-temperature flue gas pipeline 14, an end of said high-temperature flue gas pipeline 14 is connected with said cooling zone kiln car 13, and the other end of said high-temperature flue gas pipeline 14 is connected with said waste heat boiler 11; Circulating fan 15 is connected with the other end of said low-temperature flue gas pipeline 12, and is connected with said waste heat boiler 11.
Further, device for recovering waste heat of tunnel kiln also comprises chimney 16, and said chimney 16 is connected with said circulating fan 15.
Fig. 3 is the flow chart of steps of the residual heat of tunnel kiln recovery method that provides of the embodiment of the invention one.With reference to Fig. 3, the residual heat of tunnel kiln recovery method comprises:
S21, inert gas is sent in the kiln car of cooling zone through the low-temperature flue gas pipeline under the effect of circulating fan;
S22, said inert gas absorb the heat of the material in the kiln car of said cooling zone;
S23, said inert gas get into waste heat boiler through the high-temperature flue gas pipeline;
Getting into said circulating fan after S24, said inert gas come out from said waste heat boiler circulates.
Fig. 5 is the cross-sectional view of the tunnel cave system that provides of the embodiment of the invention.With reference to Fig. 5; Kiln car 31 was filled material and is got into preheating zone 33 in the kiln bodies through first wicket, 32 backs when the tunnel cave system moved; Get into the thermal treatment zone 35 through the kiln car after the preheating 31 through second wicket, 34 backs; Heating finishes back kiln car 31 through the dried cooling zone 37 of putting out of the 3rd wicket 36 entering, and cooled kiln car 31 removes tunnel cave through the 4th wicket 38.Kiln car 31 passes through the process of preheating, heating and cooling respectively in this process; The trizonal separation of tunnel cave system is through first wicket 32, second wicket 34, the 3rd wicket 36, the 4th wicket 38 open and close controlling, thereby realizes the difference in functionality of zones of different.
Kiln car 31 gets into the dried cooling zone 37 of putting out; Be mainly used in the material on the cooling cooling zone kiln car 13; This moment, the 3rd wicket 36 and the 4th wicket 38 were closed; The dried system of putting out a relative closure of cooling zone 37 formation; The inert gas that is used for cooled materials is sent in the cooling zone kiln car 13 through low-temperature flue gas pipeline 12 under the effect of circulating fan 15, and said inert gas absorbs the heat of the material in the said cooling zone kiln car 13 and heats up, and the inert gas after temperature raises gets into waste heat boiler 11 through high-temperature flue gas pipeline 14; Produce hot water or steam behind the heat of waste heat boiler 11 absorption inert gases, said inert gas cooling back gets into said circulating fan 15 again after said waste heat boiler 11 comes out, so circulate.In case of emergency inert gas also can be discharged in the air through chimney 16 under the effect of circulating fan 15.
Embodiment two
Fig. 2 is the cross-sectional view of the device for recovering waste heat of tunnel kiln that provides of the embodiment of the invention two.With reference to Fig. 2, device for recovering waste heat of tunnel kiln comprises first pipeline 41, and an end of said first pipeline 41 is connected with the top of thermal treatment zone kiln car 42, and the other end of said first pipeline 41 is connected with the combustion chamber 43 of said thermal treatment zone kiln car 42; Air-introduced machine 44 connects said waste heat boiler 45; Second pipeline 46, an end of said second pipeline 46 is connected with said combustion chamber 43, and the other end of said second pipeline 46 is connected with said waste heat boiler 45.
Further, device for recovering waste heat of tunnel kiln also comprises combustion-supporting gas pipeline 47, is connected with said combustion chamber 43.Device for recovering waste heat of tunnel kiln also comprises discharge duct 48, and said discharge duct 48 is connected with said air-introduced machine 44.
Fig. 4 is the flow chart of steps of the residual heat of tunnel kiln recovery method that provides of the embodiment of the invention two.With reference to Fig. 4, the residual heat of tunnel kiln recovery method comprises:
S51, accumulate in the combustion chamber that the fuel gas at the top of thermal treatment zone kiln car introduces said thermal treatment zone kiln car through first pipeline and burn;
S52, gas fume after burning are introduced waste heat boiler through second pipeline;
S53, said flue gas are discharged from said waste heat boiler through air-introduced machine.
Particularly; Material on the thermal treatment zone kiln car 42 produces fuel gas volatile, that accumulate in kiln body top under high temperature action; Fuel gas burns through the combustion chamber 43 that first pipeline 41 is introduced into thermal treatment zone kiln car 42; The heat that produces is used to heat the material on the thermal treatment zone kiln car 42, and combustion air delivers into combustion chamber 43 through combustion-supporting gas pipeline 47, and gas fume after burning is introduced waste heat boiler 45 through second pipeline 46; Produce hot water or steam behind the heat of waste heat boiler 45 absorption flue gases, the flue gas after the cooling discharges through discharge duct 48 under the effect of air-introduced machine 44.
Obviously, those skilled in the art can carry out various changes and modification to invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a device for recovering waste heat of tunnel kiln is characterized in that, comprising:
Waste heat boiler;
The low-temperature flue gas pipeline, an end of said low-temperature flue gas pipeline is connected with the cooling zone kiln car;
The high-temperature flue gas pipeline, an end of said high-temperature flue gas pipeline is connected with said cooling zone kiln car, and the other end of said high-temperature flue gas pipeline is connected with said waste heat boiler;
Circulating fan is connected with the other end of said low-temperature flue gas pipeline, and is connected with said waste heat boiler.
2. device for recovering waste heat of tunnel kiln according to claim 1 is characterized in that, also comprises chimney, and said chimney is connected with said circulating fan.
3. device for recovering waste heat of tunnel kiln according to claim 1 is characterized in that, also comprises:
First pipeline, an end of said first pipeline is connected with the top of thermal treatment zone kiln car, and the other end of said first pipeline is connected with the combustion chamber of said thermal treatment zone kiln car;
Air-introduced machine connects said waste heat boiler;
Second pipeline, an end of said second pipeline is connected with said combustion chamber, and the other end of said second pipeline is connected with said waste heat boiler.
4. device for recovering waste heat of tunnel kiln according to claim 3 is characterized in that, also comprises the combustion-supporting gas pipeline, is connected with said combustion chamber.
5. device for recovering waste heat of tunnel kiln according to claim 3 is characterized in that, also comprises discharge duct, and said discharge duct is connected with said air-introduced machine.
6. a residual heat of tunnel kiln recovery method is characterized in that, comprising:
Inert gas is sent in the kiln car of cooling zone through the low-temperature flue gas pipeline under the effect of circulating fan;
Said inert gas absorbs the heat of the material in the kiln car of said cooling zone;
Said inert gas gets into waste heat boiler through the high-temperature flue gas pipeline;
Getting into said circulating fan after said inert gas comes out from said waste heat boiler circulates.
7. residual heat of tunnel kiln recovery method according to claim 6 is characterized in that, said inert gas under the effect of said circulating fan through smoke stack emission in air.
8. residual heat of tunnel kiln recovery method according to claim 6 is characterized in that, comprising:
Accumulating in the combustion chamber that the fuel gas at the top of thermal treatment zone kiln car introduces said thermal treatment zone kiln car through first pipeline burns;
Gas fume after burning is introduced waste heat boiler through second pipeline;
Said flue gas is discharged from said waste heat boiler through air-introduced machine.
9. residual heat of tunnel kiln recovery method according to claim 8 is characterized in that, also comprises in the combustion-supporting gas pipeline feeding combustion air.
10. residual heat of tunnel kiln recovery method according to claim 8 is characterized in that, also comprises the discharge duct discharge of said flue gas from being connected with said air-introduced machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104104788A CN102494543A (en) | 2011-12-09 | 2011-12-09 | Tunnel kiln waste heat recovery device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104104788A CN102494543A (en) | 2011-12-09 | 2011-12-09 | Tunnel kiln waste heat recovery device and method |
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| CN102494543A true CN102494543A (en) | 2012-06-13 |
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| CN2011104104788A Pending CN102494543A (en) | 2011-12-09 | 2011-12-09 | Tunnel kiln waste heat recovery device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910620A (en) * | 2012-10-18 | 2013-02-06 | 中钢集团鞍山热能研究院有限公司 | Method and device for recycling waste heat of graphitized furnace |
| CN103759543A (en) * | 2013-12-30 | 2014-04-30 | 湖南省醴陵市科发窑炉热工设备有限公司 | Waste heat utilization structure for tunnel kiln cooling area |
| CN107014203A (en) * | 2017-05-30 | 2017-08-04 | 大石桥市宝鼎耐火材料有限公司 | Environment friendly magnesium carbon brick heat treatment kiln and its processing method |
| CN113418388A (en) * | 2021-07-01 | 2021-09-21 | 深圳东忠窑炉有限公司 | High-temperature glaze firing process sintering gas tunnel kiln |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946980Y (en) * | 2006-08-11 | 2007-09-12 | 高维岩 | External combustion-type rebaking tunnel kiln |
| CN101598502A (en) * | 2009-07-03 | 2009-12-09 | 霍镰泉 | Waste heat recovery system of kiln |
-
2011
- 2011-12-09 CN CN2011104104788A patent/CN102494543A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946980Y (en) * | 2006-08-11 | 2007-09-12 | 高维岩 | External combustion-type rebaking tunnel kiln |
| CN101598502A (en) * | 2009-07-03 | 2009-12-09 | 霍镰泉 | Waste heat recovery system of kiln |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910620A (en) * | 2012-10-18 | 2013-02-06 | 中钢集团鞍山热能研究院有限公司 | Method and device for recycling waste heat of graphitized furnace |
| CN102910620B (en) * | 2012-10-18 | 2014-10-08 | 中钢集团鞍山热能研究院有限公司 | Method and device for recycling waste heat of graphitized furnace |
| CN103759543A (en) * | 2013-12-30 | 2014-04-30 | 湖南省醴陵市科发窑炉热工设备有限公司 | Waste heat utilization structure for tunnel kiln cooling area |
| CN107014203A (en) * | 2017-05-30 | 2017-08-04 | 大石桥市宝鼎耐火材料有限公司 | Environment friendly magnesium carbon brick heat treatment kiln and its processing method |
| CN113418388A (en) * | 2021-07-01 | 2021-09-21 | 深圳东忠窑炉有限公司 | High-temperature glaze firing process sintering gas tunnel kiln |
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Application publication date: 20120613 |