CN103542721A - Method for utilizing ceramic heat exchanger in sludge brick burning through tunnel kiln - Google Patents
Method for utilizing ceramic heat exchanger in sludge brick burning through tunnel kiln Download PDFInfo
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- CN103542721A CN103542721A CN201310550772.8A CN201310550772A CN103542721A CN 103542721 A CN103542721 A CN 103542721A CN 201310550772 A CN201310550772 A CN 201310550772A CN 103542721 A CN103542721 A CN 103542721A
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- fresh air
- temperature
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- heat exchanger
- pyrolysis
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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
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Treatment Of Sludge (AREA)
Abstract
A main induced draft fan is utilized to pump high temperature smoke produced by a tunnel kiln burning zone from a front cooling zone into a ceramic heat exchanger to conduct heat exchange with fresh air blown from a blower to enable the temperature of the high temperature smoke to be reduced and the temperature of the fresh air to be increased. The heated fresh air enters a drying zone and a pyrolysis zone to dry brick blanks and conduct pyrolysis on sludge components with the flow adjusted by a valve. By means of the ceramic heat exchanger, the highest use temperature limit of the induced draft fan is not required to be considered, heat energy of high temperature smoke can be recycled as much as possible, the temperature of the fresh air entering the drying zone and the pyrolysis zone is increased as high as possible, oxygen content of combustion air is increased, and heat efficiency is improved.
Description
Technical field
The invention belongs to Solid Waste Treatment technical field.The mud concept of mentioning in the present invention contains mud that mud, garbage crushing or boiling that sewage treatment plant produces produce, human and animal excreta, septic tank excrement slag, riverway sludge etc.
Background technology
Mud can be mixed and made into mud adobe for baking red bricks with major ingredient, the auxiliary material such as clay, shale, slag, flyash after dehydration, both can utilize its calorific value, also can save major ingredient, supplementary product consumption, is a kind of disposal of resources mode.
Accompanying drawing 1 is shown in the existing technological process that utilizes tunnel cave to fire sludge brick.
The greatest problem of this technological process is exactly high fume temperature, cause thermal waste: the high-temperature flue-gas that in tunnel cave, clinkering zone produces is up to 1100 ℃, need to pump back dry zone and pyrolysis band for brick bat drying and organic matter pyrolysis with air-introduced machine, but common air-introduced machine maximum operating temperature can only reach 300 ℃, so need to sneak in a large number the fresh air of introducing from salband, lower the temperature; Meanwhile, in order to recycle as much as possible heat energy, the mixed flue gas temperature that inevitable requirement enters air-introduced machine approaches 300 ℃ as far as possible; Like this, just cause that exhaust smoke level is very large, exhaust gas temperature is very high, causes a large amount of thermal waste.Some brick fields are sent into independent hothouse for dry brick by this high-temperature flue gas, but sludge components can decompose a large amount of foul smell of generation and methane when dry, do not purify and will cause air pollution, and it is very high to purify cost, so cause mud to be baked bricks, is difficult to promote.
Summary of the invention
In order to address the above problem, the present invention proposes following technological process: (seeing accompanying drawing 2)
The principle and advantage of the inventive method technological process: ceramic heat exchanger is more high temperature resistant, corrosion-resistant compared with metallic recuperator, its good heat conductivity, elevated temperature strength is high, anti-oxidant, thermal shock resistance good, life-span is long, a little repair, and dependable performance is stable, easy and simple to handle, be the optimum device that reclaims at present high-temperature flue gas waste heat.Utilize ceramic heat exchanger just can not be subject to the restriction of air-introduced machine maximum operation (service) temperature, reclaim as much as possible the heat energy of high-temperature flue gas, the temperature of fresh air that makes to enter dry zone and pyrolysis band is high as much as possible, compared with prior art, both increase the oxygen content of combustion air, also improved the thermal efficiency.
Accompanying drawing explanation
As shown in Figure 1, in this technological process, the hot blast water capacity of drawing from rear salband is very little, temperature is lower, for the preheating of adobe, can prevent its moisture regain; Hot blast water capacity that in the past salband is drawn is very high, temperature is also very high, can be used for the pyrolysis of dry, the sludge components of adobe; Water vapour, foul smell, fuel gas dry, that pyrolysis produces all flow into clinkering zone and thoroughly burn, and can guarantee in smoke evacuation not containing foul smell and fuel gas.
As shown in Figure 2, in the technological process of the inventive method, the high-temperature flue gas the past salband suction ceramic heat exchanger that utilizes main induced draft fan that sintering zone of tunnel furnace is produced, the fresh air being blown into air blast carries out heat exchange, and high-temperature flue-gas reduction, fresh air temperature are improved; Fresh air after intensification enters respectively dry zone and pyrolysis band for the pyrolysis of dry, the sludge components of adobe by valve regulated flow.
The specific embodiment
In an embodiment of the inventive method, the flow process of the inventive method is: mud adobe is piled up and on kiln car, is pushed in tunnel cave, successively through preheating zone, dry zone, pyrolysis band, clinkering zone, front salband, after salband be just fired into common brick.Wherein the temperature of clinkering zone is 1100 ℃, in the past the high-temperature flue-gas that salband is extracted out is 1000 ℃, in ceramic heat exchanger with fresh air heat exchange after temperature be down to 150 ℃, fresh air is also heated to 800 ℃ from environment temperature, dry zone and pyrolysis band are respectively equipped with a plurality of fresh air inlets of being furnished with air-quantity adjusting valve, by adjusting, pass through the air quantity of these valves, just can control the temperature of relevant position in dry zone and pyrolysis band to meet the requirement of baking bricks.
Claims (1)
1. ceramic heat exchanger is fired to the method for sludge brick for tunnel cave for one kind, it is characterized in that: in the technological process of the inventive method, the high-temperature flue gas the past salband suction ceramic heat exchanger that utilizes main induced draft fan that sintering zone of tunnel furnace is produced, the fresh air being blown into air blast carries out heat exchange, and high-temperature flue-gas reduction, fresh air temperature are improved; Fresh air after intensification enters respectively dry zone and pyrolysis band for the pyrolysis of dry, the sludge components of adobe by valve regulated flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550772.8A CN103542721A (en) | 2013-11-09 | 2013-11-09 | Method for utilizing ceramic heat exchanger in sludge brick burning through tunnel kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550772.8A CN103542721A (en) | 2013-11-09 | 2013-11-09 | Method for utilizing ceramic heat exchanger in sludge brick burning through tunnel kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103542721A true CN103542721A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310550772.8A Pending CN103542721A (en) | 2013-11-09 | 2013-11-09 | Method for utilizing ceramic heat exchanger in sludge brick burning through tunnel kiln |
Country Status (1)
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| CN (1) | CN103542721A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588433A (en) * | 2016-03-01 | 2016-05-18 | 河南利刚王磨料磨具有限公司 | Three-section tunnel kiln with ventilation device |
| CN105588430A (en) * | 2016-03-01 | 2016-05-18 | 河南利刚王磨料磨具有限公司 | Double-section tunnel kiln with ventilation and cooling device |
| CN105588431A (en) * | 2016-03-01 | 2016-05-18 | 河南利刚王磨料磨具有限公司 | Energy-saving three-section tunnel kiln with ventilation device |
| CN105588432A (en) * | 2016-03-01 | 2016-05-18 | 河南利刚王磨料磨具有限公司 | Energy-saving double-section tunnel kiln with ventilation and cooling device |
| CN113340100A (en) * | 2021-07-06 | 2021-09-03 | 曹国强 | System and method for cooperatively treating municipal sludge/oil sludge by using baked brick tunnel kiln |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3632918A1 (en) * | 1986-09-27 | 1988-06-09 | Haessler Andreas | Tunnel kiln with bypass afterburning |
| US4773851A (en) * | 1986-08-09 | 1988-09-27 | Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. Kg | Tunnel kiln adapted for firing frost-resistant bricks in a reducing atmosphere |
| CN2779071Y (en) * | 2005-04-06 | 2006-05-10 | 王文君 | Roller way kiln residual heat electricity generating device |
| CN102778126A (en) * | 2012-07-27 | 2012-11-14 | 山东恒祥机械有限公司 | One-time palletizing-burning tunnel kiln |
-
2013
- 2013-11-09 CN CN201310550772.8A patent/CN103542721A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4773851A (en) * | 1986-08-09 | 1988-09-27 | Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. Kg | Tunnel kiln adapted for firing frost-resistant bricks in a reducing atmosphere |
| DE3632918A1 (en) * | 1986-09-27 | 1988-06-09 | Haessler Andreas | Tunnel kiln with bypass afterburning |
| CN2779071Y (en) * | 2005-04-06 | 2006-05-10 | 王文君 | Roller way kiln residual heat electricity generating device |
| CN102778126A (en) * | 2012-07-27 | 2012-11-14 | 山东恒祥机械有限公司 | One-time palletizing-burning tunnel kiln |
Non-Patent Citations (2)
| Title |
|---|
| 肖山: "隧道窑的余热利用", 《陶瓷研究》 * |
| 邹晓宝，曹嘉莉: "隧道窑烟气废热回收利用技术", 《陶瓷工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588433A (en) * | 2016-03-01 | 2016-05-18 | 河南利刚王磨料磨具有限公司 | Three-section tunnel kiln with ventilation device |
| CN105588430A (en) * | 2016-03-01 | 2016-05-18 | 河南利刚王磨料磨具有限公司 | Double-section tunnel kiln with ventilation and cooling device |
| CN105588431A (en) * | 2016-03-01 | 2016-05-18 | 河南利刚王磨料磨具有限公司 | Energy-saving three-section tunnel kiln with ventilation device |
| CN105588432A (en) * | 2016-03-01 | 2016-05-18 | 河南利刚王磨料磨具有限公司 | Energy-saving double-section tunnel kiln with ventilation and cooling device |
| CN113340100A (en) * | 2021-07-06 | 2021-09-03 | 曹国强 | System and method for cooperatively treating municipal sludge/oil sludge by using baked brick tunnel kiln |
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Application publication date: 20140129 |