CN104792157A - Low-emission ceramic roller kiln - Google Patents
Low-emission ceramic roller kiln Download PDFInfo
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- CN104792157A CN104792157A CN201510150538.5A CN201510150538A CN104792157A CN 104792157 A CN104792157 A CN 104792157A CN 201510150538 A CN201510150538 A CN 201510150538A CN 104792157 A CN104792157 A CN 104792157A
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- Prior art keywords
- roller kiln
- ceramic roller
- denitrfying agent
- low emission
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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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- 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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- Tunnel Furnaces (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a low-emission ceramic roller kiln which comprises a preheat area, a high-temperature area and a cooling area which are sequentially distributed. The low-emission ceramic roller kiln is characterized in that a denitrifying agent adding area is arranged on the tail portion of the preheat area, and a denitrifying agent sprayer is arranged on the upper side and/or the lower side of the denitrifying agent adding area. Compared with the prior art, the sprayer spraying denitrifying agents is additionally arranged in the preheat area, so that when ceramic enters the high-temperature area and is burnt, the denitrifying agents react with oxynitride, the oxynitride is reduced to nitrogen or water, and emission of pollutants is effectively reduced. Meanwhile, a waste heat recycling pipeline is arranged to be used for recycling waste heat generated after product burning, energy consumption is reduced, and practicality is good.
Description
Technical field
The present invention relates to ceramic production device technical field, particularly relate to a kind of ceramic roller kiln of low emission.
Background technology
Roller kilns, also known as kiln at the bottom of roller, are mainly used in the production of the ceramic building materials such as ceramic tile.Roller kilns are kilns of continuous burnt, the tunnel cave using the roller rotated as base substrate delivery vehicle.Ceramic product is placed in the very close horizontal refractory roll in many bar intervals, and the rotation of roller rest makes pottery be sent to kiln tail from kiln hood.
The combustion chamber of roller kilns is in the below of roller, and be atomized the fuel such as heavy oil, diesel oil, kerosene with compressed air and carry out burning generation high temperature, the fuel such as heavy oil, diesel oil, kerosene can produce oxynitrides (NO in combustion
x) etc. atmosphere pollution.Along with the enhancing gradually of environmental consciousness, Production of Ceramics industry it is also proposed the discharge capacity of pollutant and explicitly calls for, that is, discharge capacity is not more than 240mg/Nm
3.Therefore, the roller kilns relating to a kind of pollutant low emission are significant.
Summary of the invention
The object of the present invention is to provide a kind of ceramic roller kiln with denitration function, to reduce the discharge of nitrogen oxide in Production of Ceramics process.
For reaching above object, the present invention adopts following technical scheme.
A ceramic roller kiln for low emission, comprising: the preheating zone of arranging successively, high-temperature region and cooling zone, is characterized in that, the afterbody of described preheating zone is that denitrfying agent adds district, adds the upside in district and/or downside is provided with denitrfying agent nozzle at denitrfying agent.
As with improvement, between cooling zone and preheating zone, be connected with waste heat recovery pipeline.
As with improvement, the spray angle of described denitrfying agent nozzle is 15-150 °.
As with improvement, the operating temperature of described high-temperature region is between 750-1150 DEG C.
As with improvement, described denitrfying agent is by being with NH
xthe reducing agent of base, alcohol compound, aldehyde compound, ester type compound and aminated compounds are composited.
As with improvement, described denitrfying agent is by ammonium sulfate, and ammonium chloride, dicyandiamide, absolute ethyl alcohol, melamine is composited.
As with improvement, described denitrfying agent is by ammonium carbonate, and ammonium chloride, dicyandiamide, alcohols, aldehydes, ester class, azanol, melamine is composited.
As with improvement, described denitrfying agent is urea, ammonium carbonate, ammonium carbonate, ammonium chloride, dicyandiamide, alcohols, aldehydes, ester class, and azanol, melamine is composited.
The ceramic roller kiln of a kind of low emission provided by the invention, by increasing the nozzle spraying denitrfying agent in preheating zone, when pottery enters high-temperature region calcination, denitrfying agent and nitrogen oxide react, reduction of nitrogen oxide is become nitrogen or water, effectively lower the discharge of pollutant.Meanwhile, by arranging waste heat recovery pipeline, be used for reclaim product fire after remaining temperature, save energy consumption, practicality is good.
Accompanying drawing explanation
Figure 1 shows that ceramic roller kiln structural representation provided by the invention.
Detailed description of the invention
Understand essence of the present invention better for convenience of those of ordinary skill in the art, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described as follows.
Embodiment one
As shown in Figure 1, a kind of ceramic roller kiln of low emission, comprising: preheating zone 1, high-temperature region 2, cooling zone 3, waste heat recovery pipeline 4 and denitrfying agent nozzle 5.
During real work, product to be sintered from preheating zone 1 injection kiln, successively through high-temperature region 2, cooling zone 3 fired.Described waste heat recovery pipeline 4 is connected between cooling zone 3 and preheating zone 1, be used for reclaim product fire after remaining temperature, to save energy consumption.Described denitrfying agent nozzle 5 is arranged on the rear of preheating zone 1.
In the present embodiment, the spray angle of described denitrfying agent nozzle 5 is 45 °, and the temperature of described high-temperature region is 800 DEG C, and described denitrfying agent is ammonium sulfate, ammonium chloride, dicyandiamide, and absolute ethyl alcohol, melamine is composited.
Compared with prior art, ceramic roller kiln provided by the invention, adds denitrfying agent by the afterbody in preheating zone, and when product introduction high-temperature region is fired, denitrfying agent and fuel combustion products react, and effectively removes the oxynitrides in tail gas.Especially, described denitrfying agent adopts multiple reducing compound to mix, and compared with traditional ammonia or urea class reducing agent, does not have an impact to fuel, the denitration rate of energy free adjustment ceramic roller kiln, and avoids ammonia escape phenomenon, and practicality is good.
Embodiment two
The ceramic roller kiln that the present embodiment provides and embodiment one basically identical, difference is, described denitrfying agent nozzle is arranged on above and below the afterbody of cooling zone, its spray angle is 150 °, the temperature of described high-temperature region is 1150 DEG C, and described denitrfying agent is ammonium carbonate, ammonium chloride, dicyandiamide, alcohols, aldehydes, ester class, azanol, melamine is composited.
Embodiment two
The ceramic roller kiln that the present embodiment provides and embodiment one basically identical, difference is, described denitrfying agent nozzle is only arranged on the top of cooling zone afterbody, the spray angle of described denitrfying agent nozzle 5 is 15 °, and the temperature of described high-temperature region is 750 DEG C, and described denitrfying agent is urea, ammonium carbonate, ammonium carbonate, ammonium chloride, dicyandiamide, alcohols, aldehydes, ester class, azanol, melamine is composited.
Above detailed description of the invention has been described in detail essence of the present invention, but can not limit protection scope of the present invention with this.Apparently, under the enlightenment of essence of the present invention, the art those of ordinary skill also can carry out many improvement and modification, it should be noted that these improve and modify and all drops within claims of the present invention.
Claims (8)
1. a ceramic roller kiln for low emission, comprising: the preheating zone of arranging successively, high-temperature region and cooling zone, is characterized in that, the afterbody of described preheating zone is that denitrfying agent adds district, adds the upside in district and/or downside is provided with denitrfying agent nozzle at denitrfying agent.
2. the ceramic roller kiln of a kind of low emission according to claim 1, is characterized in that, is connected with waste heat recovery pipeline between cooling zone and preheating zone.
3. the ceramic roller kiln of a kind of low emission according to claim 1, is characterized in that, the spray angle of described denitrfying agent nozzle is 15-150 °.
4. the ceramic roller kiln of a kind of low emission according to claim 1, is characterized in that, the operating temperature of described high-temperature region is between 750-1150 DEG C.
5. the ceramic roller kiln of a kind of low emission according to claim 1, is characterized in that, described denitrfying agent is by being with NH
xthe reducing agent of base, alcohol compound, aldehyde compound, ester type compound and aminated compounds are composited.
6. the ceramic roller kiln of a kind of low emission according to claim 1, is characterized in that, described denitrfying agent is by ammonium sulfate, and ammonium chloride, dicyandiamide, absolute ethyl alcohol, melamine is composited.
7. the ceramic roller kiln of a kind of low emission according to claim 1, is characterized in that, described denitrfying agent is by ammonium carbonate, and ammonium chloride, dicyandiamide, alcohols, aldehydes, ester class, azanol, melamine is composited.
8. the ceramic roller kiln of a kind of low emission according to claim 1, is characterized in that, described denitrfying agent is urea, ammonium carbonate, ammonium carbonate, ammonium chloride, dicyandiamide, alcohols, aldehydes, ester class, and azanol, melamine is composited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150538.5A CN104792157A (en) | 2015-03-31 | 2015-03-31 | Low-emission ceramic roller kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150538.5A CN104792157A (en) | 2015-03-31 | 2015-03-31 | Low-emission ceramic roller kiln |
Publications (1)
| Publication Number | Publication Date |
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| CN104792157A true CN104792157A (en) | 2015-07-22 |
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ID=53557168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510150538.5A Pending CN104792157A (en) | 2015-03-31 | 2015-03-31 | Low-emission ceramic roller kiln |
Country Status (1)
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| CN (1) | CN104792157A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166969A (en) * | 2017-05-21 | 2017-09-15 | 南昌安润科技有限公司 | A kind of energy-saving rare earth firing device |
| CN107202492A (en) * | 2017-07-03 | 2017-09-26 | 广州绿华环保科技有限公司 | A kind of roller kilns exhaust gas denitration device and its exhaust gas denitration method |
| CN108744853A (en) * | 2018-06-26 | 2018-11-06 | 广东新翔星科技股份有限公司 | A kind of NO_x Reduction by Effective desulfurizing agent and preparation method thereof |
| CN109764674A (en) * | 2019-01-27 | 2019-05-17 | 天津大学 | High temperature tunnel furnace for powder body material sinter molding |
| CN112833678A (en) * | 2021-01-07 | 2021-05-25 | 河南工学院 | Brick and tile manufacturing tail gas purification process and device based on uniform distribution combustion and material temperature control |
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2015
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| CN101182217A (en) * | 2007-12-06 | 2008-05-21 | 武汉理工大学 | Rich-oxygen and pure oxygen burning roller-way kiln |
| CN201285040Y (en) * | 2008-05-23 | 2009-08-05 | 王文庭 | Premixed gas burner of pottery kiln |
| CN101474565A (en) * | 2009-01-06 | 2009-07-08 | 上海瀛正科技有限公司 | Honeycomb type SCR denitration catalyst as well as preparation method thereof and equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166969A (en) * | 2017-05-21 | 2017-09-15 | 南昌安润科技有限公司 | A kind of energy-saving rare earth firing device |
| CN107166969B (en) * | 2017-05-21 | 2018-12-07 | 江苏恒祥宇新材料有限公司 | A kind of energy-saving rare earth firing device |
| CN107202492A (en) * | 2017-07-03 | 2017-09-26 | 广州绿华环保科技有限公司 | A kind of roller kilns exhaust gas denitration device and its exhaust gas denitration method |
| CN108744853A (en) * | 2018-06-26 | 2018-11-06 | 广东新翔星科技股份有限公司 | A kind of NO_x Reduction by Effective desulfurizing agent and preparation method thereof |
| CN108744853B (en) * | 2018-06-26 | 2020-06-23 | 广东新翔星科技股份有限公司 | Efficient denitration desulfurizer and preparation method thereof |
| CN109764674A (en) * | 2019-01-27 | 2019-05-17 | 天津大学 | High temperature tunnel furnace for powder body material sinter molding |
| CN109764674B (en) * | 2019-01-27 | 2021-01-05 | 安徽华淮澄膜科技有限公司 | High-temperature tunnel furnace for sintering and forming powder material |
| CN112833678A (en) * | 2021-01-07 | 2021-05-25 | 河南工学院 | Brick and tile manufacturing tail gas purification process and device based on uniform distribution combustion and material temperature control |
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Application publication date: 20150722 |
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