CN207112804U - A kind of flame temperature control low nitrogen burning system for ceramic roller kiln - Google Patents
A kind of flame temperature control low nitrogen burning system for ceramic roller kiln Download PDFInfo
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- CN207112804U CN207112804U CN201720824832.4U CN201720824832U CN207112804U CN 207112804 U CN207112804 U CN 207112804U CN 201720824832 U CN201720824832 U CN 201720824832U CN 207112804 U CN207112804 U CN 207112804U
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- ceramic roller
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- temperature control
- gas
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Abstract
The utility model discloses a kind of flame temperature control low nitrogen burning system for ceramic roller kiln, including low NO and its blowing system, by NO in industry spot detection ceramic roller kiln kilnXIt is mostly thermal NO caused by direct combustionX, the utility model installation low NO simultaneously reduces flame temperature by pre- blowing system, so as to reduce thermal NOXYield, to reach NOXThe purpose of emission reduction.The utility model combination Production of Ceramics Wiring technology and NOXGeneration feature, NO is carried out using low nitrogen burnerXEmission reduction, transformation process is simple, no operating cost, is a kind of new ceramic flue gas pollutant Treatment process.
Description
Technical field
The utility model belongs to technical field of ceramic production, and more particularly to a kind of flame temperature control for ceramic roller kiln is low
Nitrogen combustion system.
Background technology
With the fast development of China ceramic industry, the nitrogen oxides total amount discharged during Production of Ceramics is increasingly
Greatly, ceramic industry is made to turn into the another discharged nitrous oxides rich and influential family outside thermal power generation, vehicle exhaust, cement industry.Greatly
The discharged nitrous oxides of amount cause great adverse effect to atmosphere quality and earth ecology, progressively turn into ceramic row
Industry could sustainable development one of main restricting factor.Ripe denitrating technique has two kinds of SNCR and SCR at present.
SNCR denitration technical operation temperature window is 850~1100 DEG C, is to use from the point of view of the burning process of stove
The technique may have large effect after being put into operation in view of denitration technology as denitration technology to Production of Ceramics quality.
There is no enterprise to be ready to attempt, therefore, there is presently no operational performance in ceramics factory for this technology.
SCR technology be furnace flue gas discharge after, using flue gas reheating equipment, it is necessary to flue gas to 330 DEG C~
380 DEG C, the SCR reactors for having catalyst subsequently into device carry out denitration process, after flue gas can be exchanged heat after processing or enter
Entering the discharge of original flue after other PROCESS FOR TREATMENTs of row.Because ceramic kiln flue gas is purer, dustiness is low, and catalyst can
With smaller, the big cellular catalyst of specific surface area from aperture.Denitrification reducing agent selection is similar with SNCR technologies.This technical staff
Skill is ripe, and denitration efficiency is guaranteed, but quantities is huge, and investment and use cost are larger.
It is mostly producer gas that ceramic roller kiln is fuel used at present, by NO in on-the-spot test producer gasxContent
Relatively low about 30~50mg/Nm3, and enter NO after ceramic roller kiln burningxContent once rises to 300~350mg/Nm3, through dividing
Analysis thinks that current furnace uses the direct combustion mode without First air more, and flame temperature is higher, a large amount of to produce burning type NOX, cause
NO in roller kilnXDischarge is higher.
The content of the invention
The shortcomings that in order to overcome above-mentioned prior art, the purpose of this utility model are that providing one kind is used for ceramic roller kiln
Flame temperature control low nitrogen burning system, there is the characteristics of reduced investment, transformation is convenient, without operating cost.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of flame temperature control low nitrogen burning method for ceramic roller kiln, comprise the following steps：
The first step：Low NO is installed in ceramic roller kiln；
Second step：By primary air fan air distribution to low NO, and staged air distribution is used, reduce the temperature of combustion flame
Supplied with oxygen amount so that flame burns in reducing atmosphere, so as to reduce NOx generation；
3rd step：Carry out mixing with gas after burning in blowing system by overfire air fan and spray wind so that gas turns into
Oxidizing atmosphere, prevent influence of the reducing atmosphere to Low fire ceramic；
4th step：Pass through gas temperature after temperature monitoring system detection mixing；
5th step：System for detecting temperature is by institute's detected temperature feedback to DCS system；
6th step：DCS system controls air distribution blower fan, system is reached preset temperature, ensures roller kilns sintering process.
The utility model low NO supports more level air-distributions, carries out air distribution by primary air fan, it can be automatically adjusted
Total blast volume size can also automatically adjust each level air-distribution ratio, realize that the temperature for reducing combustion flame and oxygen amount are supplied so that fire
Flame burns in reducing atmosphere, so as to reduce NOx growing amount.
Temperature monitoring system is detected in real time to gas after gas after burning and Secondary Air mixing, and is transferred data to
DCS system, DCS system receive temperature monitoring system data and are compared with preset value, and secondary match somebody with somebody is controlled by comparing result
Wind system air door size, to realize the real-time monitoring of temperature.
A kind of flame temperature control low nitrogen burning system for ceramic roller kiln of the utility model, including it is arranged in ceramic roller
Some low NOs 4 of kiln, each low NO 4 is docked by branch gas tube with the gas main from gas station, each low
Nitrogen burner 4 is docked by First air branch pipe and First air house steward with primary air fan 1 respectively, the burning gases of low NO 4
Outlet connects mixing chamber 7, and mixing chamber 7 connects overfire air fan 5.
Electrically operated valve 1 for controlling gas flow is installed on the branch gas tube, pacified on the First air branch pipe
Equipped with the 2-1 of electrically operated valve two and the 2-2 of electrically operated valve three for adjusting total blast volume and air quantity ratio at different levels, reach reduction burning temperature
Degree, which forms local reduction atmosphere, finally reduces the purpose of NOx generation amount.
The quantity of the mixing chamber 7 is consistent with low NO 4, corresponds, each mixing chamber 7 respectively by passing through respectively
Secondary Air branch pipe and Secondary Air house steward are docked with overfire air fan 5, electrically operated valve 6 are provided with each Secondary Air branch pipe, by electronic
Valve 6 adjusts air quantity and burning wind mixing reaches system requirements temperature.
Tthe utility model system may also include the temp measuring system for being used to monitor mixing air temperature for being arranged on the rear end of mixing chamber 7
8, the monitoring data Real-time Feedback of the temp measuring system 8 is to DCS system 9, and DCS system 9 is by contrasting preset value to blower fan and valve
Door is regulated and controled, and realizes automatically adjusting for system.
Compared with prior art, the beneficial effects of the utility model are：
1) transformation is easy.
2) without operating cost.
3) it is simple to operate.
To sum up, the utility model denitration efficiency can reach more than 50%, and control is simple, invest small, no operating cost.
Brief description of the drawings
Fig. 1 is flue gas flue-gas denitration process FB(flow block) of the present utility model.
Fig. 2 is the structural representation of flue gas denitrification system form one of the present utility model.
Embodiment
Describe embodiment of the present utility model in detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of method of flame temperature control low-NO_x combustion technology for ceramic roller kiln, including following step
Suddenly：
The first step：Low NO is installed in ceramic roller kiln；
Second step：By primary air fan air distribution to low NO, and staged air distribution is used, reduce the temperature of combustion flame
Supplied with oxygen amount so that flame burns in reducing atmosphere, so as to reduce NOx generation；
3rd step：Carry out mixing with gas after burning in blowing system by overfire air fan and spray wind so that gas turns into
Oxidizing atmosphere, prevent influence of the reducing atmosphere to Low fire ceramic；
4th step：Pass through gas temperature after temperature monitoring system detection mixing；
5th step：System for detecting temperature is by institute's detected temperature feedback to DCS system；
6th step：DCS controls air distribution blower fan, system is reached preset temperature, ensures roller kilns sintering process.
Institute's installation burner is the low NO of more level air-distributions, carries out air distribution by primary air fan, it can be adjusted automatically
Section total blast volume size can also automatically adjust each level air-distribution ratio, realize that the temperature for reducing combustion flame and oxygen amount are supplied so that
Flame burns in reducing atmosphere, so as to reduce NOx growing amount.
Temperature monitoring system is detected in real time to gas after gas after burning and Secondary Air mixing, and is transferred data to
DCS system, DCS system receive temperature monitoring system data and are compared with preset value, and secondary match somebody with somebody is controlled by comparing result
Wind system air door size, to realize the real-time monitoring of temperature.
The utility model provides corresponding system, including following form simultaneously.
As shown in Fig. 2 one of form for Tthe utility model system：
Coal gas from gas station through pipeline to roller kilns by, docked by branch gas tube and low NO 4, coal gas
Electrically operated valve 1 is installed, for controlling gas flow on branch pipe；Primary air fan 1 passes through total pipeline and First air branch pipe and low nitrogen
Burner 4 is docked, and electrically operated valve two 2-1, the 2-2 of electrically operated valve three are installed on First air branch pipe, for adjusting total blast volume and at different levels
Air quantity ratio, reaching, which reduces ignition temperature formation local reduction atmosphere, finally reduces the purpose of NOx generation amount.
Gas after burning enters mixing chamber 7, and overfire air fan 5 is docked by total pipeline and branch pipe(tube) and mixing chamber 7, branch pipe
On set electrically operated valve 46, for adjusting air quantity and wind mixing of burning reaches the purpose of system requirements temperature.
Mixing chamber rear end sets temp measuring system 8, and DCS systems are given for mixing the monitoring of air temperature, and by data Real-time Feedback
System 9, DCS system is regulated and controled by contrasting preset value to blower fan and valve, to realize automatically adjusting for system.
Claims (4)
1. a kind of flame temperature control low nitrogen burning system for ceramic roller kiln, it is characterised in that including being arranged in ceramic roller
Some low NOs (4) of kiln, each low NO (4) are docked by branch gas tube with the gas main from gas station,
Each low NO (4) is docked by First air branch pipe and First air house steward with primary air fan (1) respectively, low NO (4)
Burned gas outlet connect mixing chamber (7), mixing chamber (7) connects overfire air fan (5).
2. it is used for the flame temperature control low nitrogen burning system of ceramic roller kiln according to claim 1, it is characterised in that the coal
Electrically operated valve one (3) for controlling gas flow is installed on gas branch pipe, is provided with the First air branch pipe for adjusting
The electrically operated valve two (2-1) and electrically operated valve three (2-2) of total blast volume and air quantity ratio at different levels, reaching reduces ignition temperature formation office
Portion's reducing atmosphere finally reduces the purpose of NOx generation amount.
3. it is used for the flame temperature control low nitrogen burning system of ceramic roller kiln according to claim 1, it is characterised in that described mixed
The quantity of conjunction room (7) unanimously, corresponds, each mixing chamber (7) respectively by passing through Secondary Air branch respectively with low NO (4)
Pipe and Secondary Air house steward are docked with overfire air fan (5), and electrically operated valve (6) is provided with each Secondary Air branch pipe, passes through electrically operated valve
(6) adjust air quantity and burning wind mixing reaches system requirements temperature.
4. it is used for the flame temperature control low nitrogen burning system of ceramic roller kiln according to claim 1, it is characterised in that also include
It is arranged on the temp measuring system (8) for being used to monitor mixing air temperature of mixing chamber (7) rear end, the monitoring number of the temp measuring system (8)
DCS system (9) is fed back to when factually, DCS system (9) regulates and controls by contrasting preset value to blower fan and valve, realizes system
Automatically adjust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720824832.4U CN207112804U (en) | 2017-07-07 | 2017-07-07 | A kind of flame temperature control low nitrogen burning system for ceramic roller kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720824832.4U CN207112804U (en) | 2017-07-07 | 2017-07-07 | A kind of flame temperature control low nitrogen burning system for ceramic roller kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207112804U true CN207112804U (en) | 2018-03-16 |
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ID=61575622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720824832.4U Expired - Fee Related CN207112804U (en) | 2017-07-07 | 2017-07-07 | A kind of flame temperature control low nitrogen burning system for ceramic roller kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207112804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218601A (en) * | 2017-07-07 | 2017-09-29 | 西安建筑科技大学 | A kind of flame temperature control low nitrogen burning method and system for ceramic roller kiln |
-
2017
- 2017-07-07 CN CN201720824832.4U patent/CN207112804U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218601A (en) * | 2017-07-07 | 2017-09-29 | 西安建筑科技大学 | A kind of flame temperature control low nitrogen burning method and system for ceramic roller kiln |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20200707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |