CN109751616A - A kind of oxygenation combustion apparatus and technique reducing glass melter NOx emission - Google Patents
A kind of oxygenation combustion apparatus and technique reducing glass melter NOx emission Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims abstract description 124
- 238000006213 oxygenation reaction Methods 0.000 title claims abstract description 95
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000001301 oxygen Substances 0.000 claims abstract description 163
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 163
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 161
- 238000002844 melting Methods 0.000 claims abstract description 34
- 230000008018 melting Effects 0.000 claims abstract description 34
- 230000009467 reduction Effects 0.000 claims abstract description 26
- 239000000446 fuel Substances 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 42
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- 239000007921 spray Substances 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 230000000505 pernicious effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 18
- 239000010410 layer Substances 0.000 description 8
- 239000005329 float glass Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000005357 flat glass Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000006124 Pilkington process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005352 clarification Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical compound [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008395 clarifying agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 tempering Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
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- Glass Melting And Manufacturing (AREA)
- Glass Compositions (AREA)
Abstract
The present invention provides a kind of oxygenation combustion apparatus and technique for reducing glass melter NOx emission, feed inlet of glass smelting kiln position third oxygenation burner is passed into glass melter melting end, improve the flame base temperature of combustion side, make the fuel after-flame of flame combustion opposite side, combustion-supporting air quantity in port is reduced, NO is reducedxGenerate concentration；First oxygenation burner is passed into glass melter melting end, promotes melting end hotspot location temperature rapidly, reduces the combustion air volume of two sides port, reduces the NO of high-temp combustion processxIt generates；The second oxygenation burner is passed into glass melter after at foot couple port, adjusts the homogenizing parameter of glass melter glass, and oxygen and fuel combustion are complete rapidly, prevents flame space NOxIt generates；4th oxygenation burner is set at gable afterwards, adjusts fining end temperature, adjusts pressure and the external world above fining end glass metal and balances, the device structure is reasonable, and process system is stablized, and not only contributes to realize emission reduction pernicious gas, also acts as energy saving double action.
Description
Technical field
The present invention relates to a kind of reduction glass melter NOxThe oxygenation combustion apparatus and technique of discharge, belong to glass manufacture skill
Art field.
Background technique
Plate glass is also referred to as white glass or clear glass, and chemical component typically belongs to soda lime glass, due to
It has light transmission, transparent, heat preservation, sound insulation, and the performances such as wear-resisting, weatherability variation are generally used for civil buildings, shop, restaurant, do
Door and window, show window and mirror processed of the buildings such as public building, airport, station etc., it can also be used to fabricate the safe glass such as tempering, interlayer
Glass.
Oxygen content about 21% in air, nitrogen content about 78%, in combustion, only oxygen participates in combustion reaction,
Nitrogen is not involved in burning, the heat that a large amount of nitrogen adsorption combustion reaction is released, while nitrogen reacts production with oxygen at high temperature
Raw a large amount of nitrogen oxides, and with flue gas emission into atmosphere, both waste of energy, also led to the pollution of atmosphere.
Plate glass manufacture belongs to high energy consumption industry, and the above are the common float glasses that air is combustion-supporting medium for the country 98%
Melting furnaces.In high temperature preparation process, N in combustion air2It is oxidized and forms NOx, concentration of emission is up to 1800~3300mg/
Nm3；Float glass process requires to use Na2SO4As clarifying agent, decomposes release SO under the high temperature conditions2, discharge dense
Degree is up to 2000~6000mg/Nm3.By taking 600t/d floatation glass production line as an example, exhaust gas volumn 80000Nm3/ h is generated daily
NOx2500 mg/Nm are pressed for 4.8 tons3It calculates, SOx3000mg/Nm is pressed for 5.8 tons3It calculates, at present the float glass process glass of domestic operation
Glass production line is 240, the NO generated every yearxIt is 420,000 tons, SOxIt is 510,000 tons, domestic flat glass industry atmosphere pollution
Discharge standard GB26453-2011 requires glass furnace NOxDischarge standard 700mg/Nm3Hereinafter, SOxDischarge standard 400mg/Nm3
Hereinafter, desulphurization denitration tail end treatment cost accounting is high at present, business burden is heavier.
External glass manufacture enterprise develops pure oxygen combustion technology in the nineties in last century successively, and many countries are successively by float glass process
Glass production line is transformed into all-oxygen combustion kiln；Moreover, domestic also built several all-oxygen combustion floatation glass production lines successively,
But the production cost of total oxygen kiln glass manufacture is higher than common float glass smelting kiln, meanwhile, the glass quality fluctuation of production
Greatly, the glass cost of output is apparently higher than ordinary plate glass price, and total oxygen production line is caused generally to lose in this way.
Therefore, one kind can either reduce NO in flue gas of glass melting furnacexProcess yield, and can be realized the section of glass melter
The method and apparatus of energy effect is that this field needs.
Summary of the invention
A kind of reduction glass melter NO is provided the purpose of the present invention is to solve the above problemxThe oxygenation of discharge is fired
Burn equipment and technology；It is passed into glass melter melting end, is improved by feed inlet of glass smelting kiln position third oxygenation burner
The flame base temperature of combustion side, makes the fuel after-flame of flame combustion opposite side, reduces the combustion-supporting air quantity in port, empty
The nitrogen brought into gas also just reduces, NOxGeneration concentration also just reduce, improve efficiency of combustion；Moreover, the first oxygenation
Burner is passed into glass melter melting end, is promoted the hotspot location temperature of melting end rapidly, is proposed the burn-off rate of glass
It rises, reduces the combustion air volume of two sides port, reduce the NO of high-temp combustion processxGeneration；Meanwhile at foot couple port after second increase
Oxygen burner is passed into glass melter, adjusts the homogenizing parameter of glass melter glass, and oxygen and fuel combustion are complete rapidly, resistance
NO in flame space is stoppedxGeneration, and can be adjusted according to the temperature-viscosity curve actual conditions of glass metal；Also,
Oxygenation burner is passed into glass melter at gable afterwards, mainly adjusting fining end temperature, and imperfect combustion fuel is existed
Fining end burning, prevents flame from tilting to other positions, and scaling loss glass melter reduces the bulk life time of glass melter, adjusts clear
Pressure and extraneous balance above clear portion glass metal realize that energy-saving, acceleration promotes the mesh of the clarification and homogenization of glass metal
's；In addition, the device structure is reasonable, process system is stablized, and not only contributes to realize emission reduction NOxContent, moreover it is possible to play energy-efficient
Double action saves production cost, facilitates towards glass industry promotion and application.
In order to achieve the above object, the present invention is realized by following technological means:
The present invention provides a kind of reduction glass melter NOxThe oxygenation combustion apparatus of discharge, it is by melting end, port, first
Oxygenation burner, feed opening part composition, it is characterized in that: glass furnace front end is provided with feed opening, feed opening rear end is provided with
Melting end, feed opening both ends are provided with third oxygenation burner, and third oxygenation burner, the 4th oxygenation burner are located at glass metal
Above face, glass furnace two sides are respectively arranged with the first oxygenation burner, the second oxygenation burner, several pairs of ports, glass furnace
Furnace rear end is provided with rear gable, and the first oxygenation burner is provided in the middle part of port.
The second oxygenation burner is provided on rear side of the foot couple port, rear gable is equipped with the 4th oxygenation burner, the
One oxygenation burner, the second oxygenation burner, third oxygenation burner front end be provided with spray gun.
The first oxygenation burner, the second oxygenation burner, third oxygenation burner, the 4th oxygenation burner difference
It is connected by pipeline with Oxygen control valve group.
The oxygen total flow of the Oxygen control valve group: 1200-1800Nm3/h；Oxygen temperature: 5-20 DEG C；Oxygen pressure
Power: 0.01-0.15MPa；Oxygen purity: 91-95%；Bye-pass oxygen flow: 50-300Nm3/h；It is sprayed before the rifle of burning spray gun
Export oxygen pressure: 0.01-0.075MPa.
It is oxygen temperature that gable, which goes out the major parameter of oxygen, after described: 5-20 DEG C；The pressure of oxygen ejiction opening: 0.03-
0.06MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 100-200Nm3/h。
The major parameter of oxygen at the feed opening is oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening:
0.04-0.075MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 150-300Nm3/h。
The major parameter of oxygen in the middle part of the melting end at hot spot is oxygen temperature: 5-20 DEG C；Oxygen ejiction opening
Pressure: 0.02-0.03MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 60-260Nm3/h。
The major parameter of oxygen is oxygen temperature after at the foot couple port: 5-20 DEG C；The pressure of oxygen ejiction opening:
0.01-0.03MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 50-190Nm3/h。
It is a kind of to reduce glass melter NO using above equipmentxThe oxygenation burning process of discharge: increased using glass melter gradient
Oxygen burning realizes that the gradient of different location is burnt to flame space in combustion, in combustion to flame space
Upper, middle and lower layer realizes different gradient burnings, and upper layer is imperfect combustion, reduces temperature and reduces NOxDischarge amount, during middle part is
Property burning, make flame that there is certain temperature gradient, lower layer is oxidizing atmosphere completely burned, and oxygen and fuel combustion temperature are high,
The heat radiation to glass metal is increased, the temperature of melting end upper space is reduced, reduces flame to the scaling loss of the big arch of glass melter；
Oxygen control valve group is collected and be transported to the oxygen at nitrogen hydrogen station, further according to different port positions performance requirement carry out control and
It adjusts, realizes NO by adjusting burning spray gun parameterxProcess emission reduction.
Working principle: the profiled section of float glass smelting kiln needs to prevent molten tin bath as protective gas using nitrogen and hydrogen
In metallic tin be oxidized, the preparation method of general nitrogen is after compressing air, to pass through reduction using cryogenic air separation method
Temperature by air nitrogen and oxygen separate, in this way on the basis of nitrogen processed, at the same can prepare purity 90% with
On 500~1200 cubes ms/h of oxygen, this partial oxidation is introduced into glass melter to carry out partial oxygen combustion-supporting, it is real
Existing NOxThe comprehensive benefit of emission reduction and glass melter energy-saving.
Oxygenation burning process is to realize that different gradients is burnt to the upper, middle and lower layer of flame space in combustion,
Mouth-shaped and angle are sprayed by adjusting the purity of oxygen, temperature, pressure, flow and oxygen, realization is burnt stage by stage, is controlled
Glass melter transverse direction flame pre-mix zone O processed2、N2Concentration distribution, the CO concentration distribution of combustion zone temperature distribution and flame end, it is real
The NO of existing glass melterxProduction quantity control reduces NOx source head and generates concentration, reduces denitration load in last handling process.
Oxygenation burning process makes combustion reaction in the first stage and is the imperfect combustion of fuel-rich, due to flame temperature compared with
It is low, and O2、N2It measures on the low side, reduces NOxGeneration；Second stage is with O2Completely burned reaction based on combustion-supporting, flame temperature
Height, but due to lacking N2It participates in and burning time is short, NOxProduction quantity it is seldom.Oxygenation burning process makes fuel completely burned, fire
Flame bottom temp improves, and increases heat-transfer capability of the flame to batch or glass metal, and drops close to big arch flame upper temp
Low, the big outside dissipated heat of arch is reduced, and melting furnaces melting rate is improved while reducing heat loss, to realize glass melter
Energy conservation.
It is collected by oxygen, the oxygen that adjustment control valve group generates nitrogen hydrogen station is collected, purified, boosting and each branch
Control etc. require, the existing space division system equipment oxygen collecting and conveying system of float glass enterprise is transformed, is needed
Oxygen collected, purified and be boosted, and adjust temperature, the pressure, flow of oxygen by control valve group, realize accurate control
System is passed through the oxygen parameter of kiln every spray gun of each pair of port.Before oxygen valve group to the pipeline of kiln rifle front position and rifle only
Return control etc..By filtering, decompression, safety cut-off and the release control to oxygen, while pipe-line system is also required to for progress
It is suitble to the requirement of oxygen conveying to be handled, and is directed to requirement of the different location to melting furnaces performance parameter, adjusts different location
Oxygen flow and pressure realize the energy-saving and emission-reduction equipment in glass combustion process.
Meanwhile increasing 1500Nm3Under the Oxygen Condition of/h, combustion air volume 7500Nm can reduce3/ h or more, on melting furnaces
Portion space can decline 20-50 DEG C, NOx40% or more emission reduction.
The present invention mainly has the advantages that
1, third oxygenation burner in feed inlet of glass smelting kiln position is passed into glass melter melting end, improves combustion side
Flame base temperature, make the fuel after-flame of flame combustion opposite side, reduce the combustion-supporting air quantity in port, brought into air
Nitrogen also just reduce, NOxGeneration concentration also just reduce, improve efficiency of combustion.
2, the first oxygenation burner is passed into glass melter melting end, promotes the hotspot location temperature of melting end rapidly,
The burn-off rate of glass is promoted, the combustion air volume of two sides port is reduced, reduces the NO of high-temp combustion processxGeneration.
3, at foot couple port after the second oxygenation burner be passed into glass melter, adjust glass melter glass homogenizing ginseng
Number, oxygen and fuel combustion are complete rapidly, prevent NO in flame spacexGeneration, and can be according to viscosity-temperature of glass metal
Line actual conditions of writing music are adjusted.
4, oxygenation burner is passed into glass melter at rear gable, mainly adjusting fining end temperature, will not fired completely
The fuel of burning burns in fining end, prevents flame from tilting to other positions, scaling loss glass melter, to reduce the whole of glass melter
Body life time adjusts pressure and extraneous balance above fining end glass metal, realizes that energy-saving, acceleration promotes the clear of glass metal
The purpose of cleer and peaceful homogenizing.
5, the device structure is reasonable, and process system is stablized, and not only contributes to realize emission reduction pernicious gas, moreover it is possible to play energy conservation
Double action, save production cost, facilitate Industry-oriented promotion and application.
Detailed description of the invention
Fig. 1 is a kind of reduction glass melter NO of the present inventionxThe oxygenation combustion apparatus of discharge and the glass furnace structure of technique
Schematic diagram.
Main element symbol description:
1 melting end
2 ports
3 first oxygenation burners
4 second oxygenation burners
5 feed openings
6 third oxygenation burners
7 the 4th oxygenation burners
Gable after 8
Below with reference to embodiment and Figure of description, the present invention is described in further detail:
Specific embodiment
A kind of reduction glass melter NOxThe oxygenation combustion apparatus of discharge, it is burnt by melting end 1, port 2, the first oxygenation
Device 3,5 part of feed opening composition.
As shown in Figure 1, glass furnace front end is provided with feed opening 5,5 rear end of feed opening is provided with melting end 1, feed opening 5
Both ends are provided with third oxygenation burner 6, and third oxygenation burner 6, the 4th oxygenation burner 7 are located above metal level, glass
Glass kiln two sides are respectively arranged with the first oxygenation burner 3, the second oxygenation burner 4, several pairs of ports 2, glass furnace rear end
It is provided with rear gable 8, the first oxygenation burner 3 is provided in the middle part of port 2.
The second oxygenation burner 4 is provided on rear side of the foot couple port 2, rear gable 8 is equipped with the 4th oxygenation burner
7, the first oxygenation burner 3, the second oxygenation burner 4, third oxygenation burner 6 front end be provided with spray gun.
The first oxygenation burner 3, the second oxygenation burner 4, third oxygenation burner 6, the 4th oxygenation burner 7
It is connected respectively by pipeline with Oxygen control valve group.
The oxygen total flow of the Oxygen control valve group: 1200-1800Nm3/h；Oxygen temperature: 5-20 DEG C；Oxygen pressure
Power: 0.01-0.15MPa；Oxygen purity: 91-95%；Bye-pass oxygen flow: 50-300Nm3/h；It is sprayed before the rifle of burning spray gun
Export oxygen pressure: 0.01-0.075MPa.
The major parameter that gable 8 goes out oxygen after described is oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening: 0.03-
0.06MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 100-200Nm3/h。
The major parameter of oxygen at the feed opening 5 is oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening:
0.04-0.075MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 150-300Nm3/h。
The major parameter of oxygen at the 1 middle part hot spot of melting end is oxygen temperature: 5-20 DEG C；Oxygen ejiction opening
Pressure: 0.02-0.03MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 60-260Nm3/h。
The major parameter of oxygen is oxygen temperature after at the foot couple port 2: 5-20 DEG C；The pressure of oxygen ejiction opening:
0.01-0.03MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 50-190Nm3/h。
A kind of reduction glass melter NOxThe oxygenation burning process of discharge, it is characterized in that: being fired using glass melter gradient oxygenation
Burn, in combustion to flame space realize different location gradient burn, in combustion to flame space it is upper,
In, lower layer realize different gradient burnings, upper layer is imperfect combustion, reduces temperature and reduces NOxDischarge amount, middle part are neutral combustion
It burns, makes flame that there is certain temperature gradient, lower layer is oxidizing atmosphere completely burned, and oxygen and fuel combustion temperature are high, increase
Heat radiation to glass metal reduces the temperature of melting end 1 upper space, reduces flame to the scaling loss of the big arch of glass melter；It will
Oxygen control valve group is collected and be transported to the oxygen at nitrogen hydrogen station, further according to different 2 positions of port performance requirement carry out control and
It adjusts, realizes NO by adjusting burning spray gun parameterxProcess emission reduction.
The profiled section of float glass smelting kiln needs to prevent the metallic tin in molten tin bath as protective gas using nitrogen and hydrogen
It is oxidized, the preparation method of general nitrogen is after compressing air, to drop air by reducing temperature using cryogenic air separation method
In nitrogen and oxygen separated, in this way on the basis of nitrogen processed, while the oxygen 500 of 90% or more purity can be prepared
~1200 cubes ms/h, by this partial oxidation be introduced into glass melter carry out partial oxygen it is combustion-supporting, realize NOxEmission reduction and
The comprehensive benefit of glass melter energy-saving.
Oxygenation burning process is to realize that different gradients is burnt to the upper, middle and lower layer of flame space in combustion,
Mouth-shaped and angle are sprayed by adjusting the purity of oxygen, temperature, pressure, flow and oxygen, realization is burnt stage by stage, is controlled
Glass melter transverse direction flame pre-mix zone O processed2、N2Concentration distribution, the CO concentration distribution of combustion zone temperature distribution and flame end, it is real
The NO of existing glass melterxProduction quantity control reduces NOx source head and generates concentration, reduces denitration load in last handling process.
Oxygenation burning process makes combustion reaction in the first stage and is the imperfect combustion of fuel-rich, due to flame temperature compared with
It is low, and O2、N2It measures on the low side, reduces NOxGeneration；Second stage is with O2Completely burned reaction based on combustion-supporting, flame temperature
Height, but due to lacking N2It participates in and burning time is short, NOxProduction quantity it is seldom.Oxygenation burning process makes fuel completely burned, fire
Flame bottom temp improves, and increases heat-transfer capability of the flame to batch or glass metal, and drops close to big arch flame upper temp
Low, the big outside dissipated heat of arch is reduced, and melting furnaces melting rate is improved while reducing heat loss, to realize glass melter
Energy conservation.
It is collected by oxygen, the oxygen that adjustment control valve group generates nitrogen hydrogen station is collected, purified, boosting and each branch
Control etc. require, the existing space division system equipment oxygen collecting and conveying system of float glass enterprise is transformed, is needed
Oxygen collected, purified and be boosted, and adjust temperature, the pressure, flow of oxygen by control valve group, realize accurate control
System is passed through the oxygen parameter of the every spray gun of each pair of port of kiln 2.Before oxygen valve group to the pipeline of kiln rifle front position and rifle
Non-return control etc..By filtering to oxygen, decompression, safety cut-off and release control, at the same pipe-line system be also required to for into
The requirement of the suitable oxygen conveying of row is handled, and is directed to requirement of the different location to melting furnaces performance parameter, adjusts different location
Oxygen flow and pressure, realize in glass combustion process energy-saving and emission-reduction equipment.
The oxygen for making full use of nitrogen hydrogen station to generate uses oxygenation gradient combustion retrofit to glass melter, passes through pipeline valve group
Oxygen is transported to the different hot spots of glass melter by system, and by using valve set system, controls temperature, the pressure of oxygen
And flow, so that it is generated different effects of energy saving and emission reduction.
This partial oxidation is mainly passed into three positions of glass furnace, is respectively: at 5 position of feed opening, hot spot, end
To this four positions after at port 2 and at rear gable 8.
It is illustrated respectively below for this four positions:
It is passed through the major parameter of the oxygen of 5 position of feed opening: oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening:
0.04-0.075MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 150-300Nm3/h；This part
Oxygen is passed into glass melter melting end 1 by 5 position third oxygenation burner 6 of feed inlet of glass smelting kiln, and main function is
The flame base temperature of combustion side is improved, the fuel after-flame of flame combustion opposite side, helping in such glass melter port 2 are made
Combustion air capacity just reduces, and the nitrogen brought into air also just reduces, NOxGeneration concentration also just reduce, while should not
It enters in the port 2 of countermeasure and burns, improve efficiency of combustion, realize energy conservation.
The major parameter of oxygen at hot spot: oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening: 0.02-0.03MPa；Oxygen
Gas purity: 91-95%；Two bye-pass system oxygen flows: 60-260Nm3/h；The oxygen of this part passes through at hot spot first
Oxygenation burner 3 is passed into glass melter melting end 1, and main function is the hotspot location temperature for making glass melter melting end 1
It is promoted rapidly, because the effect of comburant oxygen is significantly more than the combustion-supporting effect of air, accelerates the clarification of glass melter to arrange and steeped
Journey promotes the burn-off rate of glass, while reducing the combustion air volume of two sides port 2, reduces the NO of high-temp combustion processxLife
At.
The major parameter of oxygen after at foot couple port 2: oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening: 0.01-
0.03MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 50-190Nm3/h；The oxygen of this part passes through
Second oxygenation burner 4 is passed into glass melter after at foot couple port 2, and main function is the homogenizing for adjusting glass melter glass
Parameter, the fuel of general foot couple port 2 former pairs of ports 2 relatively are few, this be using after combustion-assistance technology, realize oxygen and
Fuel combustion is complete rapidly, it is therefore prevented that a large amount of NO generated in flame space due to air and fuel combustionx, and being capable of basis
The temperature-viscosity curve actual conditions of glass metal are adjusted, and are advantageously implemented emission reduction and energy-efficient double action.Oxygenation burning
The application of equipment and technique will not influence the parameters of float glass smelting kiln, facilitate the promotion and application of this technology.
The major parameter of oxygen is oxygen temperature at gable 8 after described: 5-20 DEG C；The pressure of oxygen ejiction opening: 0.03-
0.06MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 100-200Nm3/h.After this partial oxidation passes through
The 4th oxygenation burner 7 is passed into glass melter at gable 8, mainly adjusting fining end temperature, by imperfect combustion combustion
Material burns in fining end, prevents flame from tilting to other positions, and scaling loss glass melter reduces the bulk life time of glass melter, adjusts
Pressure and extraneous balance above whole fining end glass metal realize clarification and homogenization that are energy-saving, accelerating promotion glass metal
Purpose.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (9)
1. a kind of reduction glass melter NOxThe oxygenation combustion apparatus of discharge, it is burnt by melting end (1), port (2), the first oxygenation
Device (3), feed opening (5) part form, it is characterized in that: glass furnace front end is provided with feed opening (5), feed opening (5) rear end is set
It is equipped with melting end (1), feed opening (5) both ends are provided with third oxygenation burner (6), third oxygenation burner (6), the 4th oxygenation
Burner (7) is located above metal level, and glass furnace two sides are respectively arranged with the first oxygenation burner (3), the second oxygenation combustion
Burner (4), several pairs of ports (2), glass furnace rear end are provided with rear gable (8), are provided with the first oxygenation in the middle part of port (2)
Burner (3).
2. a kind of reduction glass melter NO according to claim 1xThe oxygenation combustion apparatus of discharge, it is characterized in that: foot couple is small
The second oxygenation burner (4) is provided on rear side of furnace (2), rear gable (8) is equipped with the 4th oxygenation burner (7), the first oxygenation combustion
Burner (3), the second oxygenation burner (4), third oxygenation burner (6) front end be provided with spray gun.
3. a kind of reduction glass melter NO according to claim 1xThe oxygenation combustion apparatus of discharge, it is characterized in that: first increases
Oxygen burner (3), the second oxygenation burner (4), third oxygenation burner (6), the 4th oxygenation burner (7) pass through pipeline respectively
It is connected with Oxygen control valve group.
4. a kind of reduction glass melter NO according to claim 1xThe oxygenation combustion apparatus of discharge, it is characterized in that: oxygen control
The oxygen total flow of valve group processed: 1200-1800Nm3/h；Oxygen temperature: 5-20 DEG C；Oxygen pressure: 0.01-0.15MPa；Oxygen
Purity: 91-95%；Bye-pass oxygen flow: 50-300Nm3/h；Ejiction opening oxygen pressure before the rifle of burning spray gun: 0.01-
0.075MPa。
5. a kind of reduction glass melter NO according to claim 1xThe oxygenation combustion apparatus of discharge, it is characterized in that: rear gable
(8) major parameter for going out oxygen is oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening: 0.03-0.06MPa；Oxygen purity:
91-95%；Two bye-pass system oxygen flows: 100-200Nm3/h。
6. a kind of reduction glass melter NO according to claim 1xThe oxygenation combustion apparatus of discharge, it is characterized in that: feed opening
(5) major parameter of the oxygen at is oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening: 0.04-0.075MPa；Oxygen is pure
Degree: 91-95%；Two bye-pass system oxygen flows: 150-300Nm3/h。
7. a kind of reduction glass melter NO according to claim 1xThe oxygenation combustion apparatus of discharge, it is characterized in that: melting end
(1) major parameter of the oxygen at the hot spot of middle part is oxygen temperature: 5-20 DEG C；The pressure of oxygen ejiction opening: 0.02-
0.03MPa；Oxygen purity: 91-95%；Two bye-pass system oxygen flows: 60-260Nm3/h。
8. a kind of reduction glass melter NO according to claim 1xThe oxygenation combustion apparatus of discharge, it is characterized in that: foot couple is small
The major parameter of oxygen is oxygen temperature after at furnace (2): 5-20 DEG C；The pressure of oxygen ejiction opening: 0.01-0.03MPa；Oxygen
Purity: 91-95%；Two bye-pass system oxygen flows: 50-190Nm3/h。
9. a kind of equipment using described in claim 1 to 8 reduces glass melter NOxThe oxygenation burning process of discharge, feature
It is: is burnt using the oxygenation of glass melter gradient, the gradient of different location, which is burnt, is realized to flame space in combustion, is being fired
Different gradients, which is burnt, to be realized to the upper, middle and lower layer of flame space during burning, upper layer is imperfect combustion, reduces temperature and subtracts
Few NOxDischarge amount, middle part are neutral burning, so that flame is had certain temperature gradient, lower layer is oxidizing atmosphere completely burned, oxygen
Gas and fuel combustion temperature are high, increase the heat radiation to glass metal, reduce the temperature of melting end (1) upper space, reduce fire
Scaling loss of the flame to the big arch of glass melter；Oxygen control valve group is collected and be transported to the oxygen at nitrogen hydrogen station, further according to different ports
(2) performance requirement of position is controlled and is adjusted, and realizes NO by adjusting burning spray gun parameterxProcess emission reduction.
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| CN201711068092.7A CN109751616B (en) | 2017-11-03 | 2017-11-03 | Oxygenation combustion equipment and technology for reducing NOx emission of glass melting furnace |
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| CN113429116A (en) * | 2021-06-11 | 2021-09-24 | 秦皇岛玻璃工业研究设计院有限公司 | Gradient oxygen-increasing low-NOx combustion device and process for float glass melting furnace |
| CN113429114A (en) * | 2021-08-02 | 2021-09-24 | 上海源晗能源技术有限公司 | Glass kiln combustion process with non-catalytic converter |
| CN116143380A (en) * | 2022-12-08 | 2023-05-23 | 宜昌南玻光电玻璃有限公司 | Efficient combustion system and control method for ultrathin float glass melting furnace |
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| CN109751616B (en) | 2024-03-22 |
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