CN104341088A - Spray nozzle brick for oxy-fuel combustion spray gun, manufacturing method and spray gun and melting furnace with spray nozzle brick - Google Patents
Spray nozzle brick for oxy-fuel combustion spray gun, manufacturing method and spray gun and melting furnace with spray nozzle brick Download PDFInfo
- Publication number
- CN104341088A CN104341088A CN201410648648.XA CN201410648648A CN104341088A CN 104341088 A CN104341088 A CN 104341088A CN 201410648648 A CN201410648648 A CN 201410648648A CN 104341088 A CN104341088 A CN 104341088A
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- China
- Prior art keywords
- oxygen
- fuel
- channel
- glass
- spray gun
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2211/00—Heating processes for glass melting in glass melting furnaces
- C03B2211/40—Heating processes for glass melting in glass melting furnaces using oxy-fuel burners
-
- 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
Abstract
The invention discloses a spray nozzle brick for an oxy-fuel combustion spray gun, a manufacturing method, the oxy-fuel combustion spray gun and a glass melting furnace with the spray nozzle brick, glass and a firing method of the glass. The spray nozzle brick has the beneficial effect that a spraying opening has the advantages of wide fuel use range (capable of using natural gas, coke stove gas, heavy oil, coal tar and petroleum tar powder), sufficient combustion, large flame coverage surface, high flame blackness, less NOx generation amount, gradient combustion, adjusting of oxidizing and reduction atmospheres according to types of melting glasses and the like, the melting atmosphere of the glass melting furnace can be adjusted, and the oxy-fuel combustion and oxy-fuel combustion supporting technologies are favorable for being popularized and applied in the glass melting furnace.
Description
Technical field
The present invention relates to glassmaking art, particularly relate to the method for cooking of a kind of full-oxygen combustion nozzle for spray gun brick, making method and the full-oxygen combustion spray gun be made up of it, glass melter, the glass be made up of this glass melter and glass.
Background technology
China is faced with increasingly serious power supply shortage and environmental pollution prevention and control situation, and glass industry is energy consumption rich and influential family, is also NO
xdeng the rich and influential family of noxious gas emission, high quality high-quality float glass also requires to adopt more advanced burning process and glass melting simultaneously.
The energy-saving and cost-reducing of glass melter is the key subjects paid close attention in the industry always, and along with energy dilemma increases the weight of day by day, glass melter depends on to the high-quality energy development constraining glass industry unduly.In glass melter combustion processes, air participates in burning as combustion-supporting gas, but the nitrogen accounting for 78% in air composition does not participate in combustion reactions, after a large amount of nitrogen is unnecessarily heated, at high temperature enters air, cause a large amount of calorific losss; In addition, nitrogen at high temperature also can generate oxynitride NO with oxygen reaction
x, NO
xgas enters atmospheric layer and very easily forms acid rain and cause environmental pollution.Therefore, along with the development of high-tech and economic society, manufacture various low cost, requirement that high-quality glass becomes the epoch, and pure oxygen combustion technology solves the effective means of energy-saving and environmental protection and high refining quality problem just, is described as the second revolution of glass smelting technology.
Pure oxygen combustion technology, becomes oxygen-fuel combustion system air-oxy-fuel burner system exactly, utilize purity be 90% ~ 100% oxygen in lieu of air and fuel burn, only have CO in products of combustion
2and H
2o.Oxy-fuel combustion melting furnace is capable of saving fuel, reduces NO
xdischarge, reduces the pollution to environment, improves glass quality, improves flame temperature, melting furnaces melting capacity and melting furnaces output, suitably reduces melting furnaces construction cost, improves melting furnaces work-ing life.Pure Oxygen Combustion Technology in Glass opens up new approach by for environmental protection, energy-saving and cost-reducing and production high-quality glass.Glass melter adopts pure oxygen combustion technology can realize energy-conservation 30%, improves melting rate 10%, NO
xquantity discharged is from 2200mg/Nm
3be reduced to 500mg/Nm
3, dust discharge reduces by 80%, SO
2quantity discharged reduces 30%.Therefore, oxy-fuel combustion melting furnace technology maturation and apply and will bring considerable economic benefit and social benefit for glass production industry.
The fuel that oxy-fuel combustion melting furnace adopts mainly contains Sweet natural gas, coke-oven gas, heavy oil, coal tar and petroleum coke powder etc.; Wherein, full-oxygen combustion spray gun is the key equipment of oxy-fuel combustion melting furnace, and nozzle brick is again one of important accessory of full-oxygen combustion spray gun, and it all plays a part very important to the life-span length of flame situation, temperature distribution, heat-transfer effect, furnace refractory.Because the temperature of full-oxygen combustion is high, after adopting full-oxygen combustion, the refractory materials (especially full-oxygen combustion nozzle brick) of building burning melting furnaces by laying bricks or stones can be subject to the serious erosion (H in products of combustion
2o can generate OH with particle reactions such as the alkaline dust of melting furnaces
-, thus accelerate the erosion to furnace refractory), the oxy-fuel combustion melting furnace life-span can be made like this to fall sharply.The softening temperature of existing nozzle brick and the performance of flushing of resistance to oxygen fuel flame can not meet the long-time service requirements of oxy-fuel combustion melting furnace, and (a kiln phase of general oxy-fuel combustion melting furnace is about 10 years, nozzle brick is generally do not need to change during this period), be burnt soon, need to change, the working cost of oxy-fuel combustion melting furnace will increase, the operation stability of melting furnaces also reduces simultaneously, and the quality of molten glass also can decrease.
Summary of the invention
The object of the invention is the technological deficiency for existing in prior art, there is provided one can make fuel combustion sufficient full-oxygen combustion nozzle for spray gun brick, described nozzle brick is rectangular parallelepiped, middle part is provided with in the inner little outer oxygen of typhon mouth shape and the hybrid channel of fuel, the top of the hybrid channel of described oxygen and fuel, left side and right side are distributed with columned upper oxygen channel, left oxygen channel and right oxygen channel respectively, and an oxygen in cylindric or oval column or fuel gas passage are arranged at the bottom of the hybrid channel of described oxygen and fuel.
In the hybrid channel of described oxygen and fuel and oxygen or fuel gas passage, be equipped with the fuel channel for providing solid or liquid fuel, described fuel channel stretches in passage corresponding to described nozzle brick, but does not run through.
Described solid or liquid fuel are heavy oil, coal tar, petroleum coke powder etc.
Described upper oxygen channel, left oxygen channel, right oxygen channel, oxygen or fuel gas passage and fuel channel can use separately or simultaneously.
A further object of the invention is the preparation method providing a kind of said nozzle brick, it is the mixing of 30-36% zircon, 52-60% aluminum oxide and 5-18% kaolin by mass percentage, then dry-pressing becomes base, again through calcining, pulverizing, batching, mixing, mechanical pressing, eventually pass and burn till, obtain the nozzle brick of finished product; Described batching, for press mass percentage, adds the chromic oxide of 5-12% after 88-95% calcining is pulverized in mixture.
The present invention also has an object to be, there is provided one can make the sufficient full-oxygen combustion spray gun of fuel combustion, comprise rifle body, connection metal part and said nozzle brick, described rifle body and described nozzle brick are joined together to form described full-oxygen combustion spray gun by described connection metal part.
Another object of the present invention is to provide one can make the sufficient glass melter of fuel combustion, spray gun wherein and nozzle brick are above-mentioned full-oxygen combustion spray gun and above-mentioned full-oxygen combustion nozzle for spray gun brick.
Another object of the present invention is to provide a kind of glass, uses above-mentioned full-oxygen combustion spray gun and above-mentioned full-oxygen combustion nozzle for spray gun brick to fire and form in above-mentioned glass melter.
Of the present invention also have an object to be to provide a kind of method firing above-mentioned glass,
When described glass needs reductibility flame, open the hybrid channel of oxygen and fuel and upper oxygen channel, or open geseous fuel and the fuel channel wherein of oxygen or fuel gas passage;
When described glass needs neutral flame, open oxygen and the hybrid channel of fuel, left oxygen channel and right oxygen channel simultaneously;
When described glass needs oxidizing flame, open oxygen and the hybrid channel of fuel, left oxygen channel, right oxygen channel and oxygen or fuel gas passage;
When described glass is high melting glass, opening oxygen and the hybrid channel of fuel, left oxygen channel, right oxygen channel and oxygen or fuel gas passage, is now oxygen in described oxygen or fuel gas passage.
Full-oxygen combustion nozzle for spray gun brick provided by the invention with the addition of chromic oxide on material, the service requirements after glass melter employing full-oxygen combustion can be met, structure can be applicable to by multi-passage design the feature that all kinds of different purposes requires glass kind, extensively (Sweet natural gas can be used because its ejiction opening has fuel use range, coke-oven gas, heavy oil, coal tar and petroleum coke powder), sufficient combustion, flame wide coverage, flame blackness is large, NOx generates few, can gradient burn, and the series of advantages such as redox condition adjustment can be carried out according to fusion cast glass kind, be conducive to full-oxygen combustion and the promotion and application of total oxygen combustion supporting technology on burning melting furnaces.The flame of the full-oxygen combustion spray gun ejection be made up of it has the longer feature of low speed, low momentum, flame, the life-time service requirement of glass melter can be met, the glass melter with full-oxygen combustion spray gun of the present invention and nozzle brick also can reach energy conservation object, and can melt and make high-quality glass.
Accompanying drawing explanation
Figure 1 shows that the structural representation of full-oxygen combustion nozzle for spray gun brick of the present invention;
Figure 2 shows that the A-A sectional view of Fig. 1;
Figure 3 shows that the B-B sectional view of Fig. 1;
Figure 4 shows that the C-C sectional view of Fig. 1.
Embodiment
The change of firing system, causes the change of glass melter structure, and oxy-fuel combustion melting furnace, as unit kiln, eliminates regenerator, port and changes ignition system, but needs the refractory materials adopting high-quality.Full-oxygen combustion oxygen rifle is arranged in the side wall of molten bath superstructure, so that across glass metal surface combustion; Spray gun is arranged and is wanted rationally on kiln, according to the heat needed for subregion supply molten glass, guarantee kiln wide on temperature homogeneity.Products of combustion, by melting furnaces, leaves melting furnaces at the other end, by waste gas flue, enters smoke stack emission.
Full-oxygen combustion spray gun and nozzle brick are one of marks having pure oxygen combustion technology, and the Performance and quality of full-oxygen combustion spray gun and nozzle brick determines whether melting furnaces can reach energy conservation object and melt the leading indicator of high-quality glass simultaneously.
Full-oxygen combustion spray gun is made up of rifle body, nozzle brick and connection metal part, and rifle body and nozzle brick are joined together to form full-oxygen combustion spray gun by connection metal part.Wherein, the material of rifle body and connection metal part is refractory alloy, and nozzle brick material is zirconia corundum refractory.Full-oxygen combustion spray gun is one of key equipment of glass melter, and it plays a part very important to the life-span length of flame situation, temperature distribution, heat-transfer effect, furnace refractory.
Below in conjunction with the drawings and specific embodiments, further illustrate content of the present invention, and the present invention is further elaborated, but these embodiments there is any restriction to the present invention absolutely not.Those skilled in the art under the enlightenment of this specification sheets to the embodiment of the present invention in any variation of doing all will belong in the scope of claims of the present invention.
Full-oxygen combustion nozzle for spray gun brick provided by the invention, structure as Figure 1-4, in rectangular parallelepiped.The middle part of nozzle brick is provided with the hybrid channel 1 of oxygen and fuel, and this passage is inner little outer large bell mouth shape; Above nozzle brick inside, left side and right side (namely the top of the hybrid channel 1 of oxygen and fuel, left side and right side) be distributed with columned upper oxygen channel 2, left oxygen channel 3 and right oxygen channel 4 respectively; One oxygen in cylindric or oval column or fuel gas passage 5 are arranged at the bottom (namely the below of the hybrid channel 1 of oxygen and fuel) of nozzle brick; If fuel be the solids such as heavy oil, coal tar, petroleum coke powder or liquid fuel time, need to add fuel channel 6 in the hybrid channel 1 of oxygen and fuel and oxygen or fuel gas passage 5.Fuel channel 6 stretches in passage corresponding to nozzle brick, but does not run through.
The sintering zircon corundum brick (sintered AZS bricks) of doping chromic oxide selected by nozzle brick of the present invention, major advantage is: difficulty of processing is little, thermal shock resistance is good, the requirement that nozzle brick is changed can be met better, be applicable to the nozzle brick of full-oxygen combustion spray gun, because nozzle brick with the addition of chromic oxide in material, the service requirements after glass melter employing full-oxygen combustion can be met, by the multi-passage design of ejiction opening in structure, the feature that all kinds of different purposes requires glass kind can be applicable to.
Full-oxygen combustion nozzle for spray gun brick provided by the invention can carry out the adjustment of founding atmosphere of glass melter, the different glass required can be fired according to practical situation, its method for cooking is: when the glass founded needs reductibility flame, open hybrid channel 1 and the upper oxygen channel 2 of oxygen and fuel, such flame overhead temperature is high, sufficient combustion is complete, and bottom is rich fuel flame, can ensure that flame base is in reductibility state like this; Or geseous fuel and the fuel channel 6 wherein of opening oxygen or fuel gas passage 5 also can reach above-mentioned effect, are applicable to the coloured glass founding needs reducing atmosphere; When the glass founded needs neutral flame, open the hybrid channel 1 of oxygen and fuel, left oxygen channel 3 and right oxygen channel 4 simultaneously, the rich fuel flame that the hybrid channel 1 of oxygen and fuel sprays is in nozzle brick during pre-burning, temperature is lower, such one side protects connection metal part and the nozzle brick of full-oxygen combustion spray gun, can increase the burning length of flame on the other hand, reduce the generation of NOx simultaneously, now flame can cover larger melting furnaces area, is applicable to large glass melting furnaces; When the glass founded needs oxidizing flame, just need to strengthen the heat trnasfer to glass metal, now open the hybrid channel 1 of oxygen and fuel, left oxygen channel 3, right oxygen channel 4 and oxygen or fuel gas passage 5, when wherein oxygen or fuel gas passage 5 are oxygen, bottom is oxygen enriched flame, sufficient combustion is complete, this contributes to the temperature improving glass metal near surface, and bottom is that oxygen enriched flame blackness is large, and heat-transfer effect is good, be applicable to founding high melting glass, as high-boron-silicon glass and high aluminosilicate glass.More than go up oxygen channel 2, left oxygen channel 3, right oxygen channel 4, oxygen or fuel gas passage 5 and fuel channel 6 can use separately or simultaneously according to different service requirements.
Nozzle brick process for making provided by the invention is as follows:
Raw material (mass percentage is: 30-36% zircon, 52-60% aluminum oxide and 5-18% kaolin) is mixed, then dry-pressing becomes base, (chromic oxide is allocated into again through calcining, pulverizing (being crushed to granularity is about 2mm), batching, wherein, the mass percentage that rear mixture is pulverized in calcining is 88-95%, the mass percentage of chromic oxide is 5-12%), mixing, mechanical pressing, eventually pass and burn till, obtain the nozzle brick of finished product.
The sintered zirconia-mullite materials of nozzle brick material selection doping chromic oxide, be because the micro-structural feature of sintering zircon corundum brick of doping chromic oxide be tiny (generally below 10 μm) baddeleyite particulate homogenous be dispersed in principal crystalline phase mullite, between corundum and chromic oxide crystal, form fine and close crystalline network, few containing glassy phase, it has a certain amount of pore (void content is less than 20%), but do not have liquid phase to ooze out phenomenon, therefore the nozzle brick difficulty of processing be made into by this material is little, thermal shock resistance is good, the requirement that nozzle brick is changed can be met better, full-oxygen combustion spray gun is jetted out flames softer, low speed, low momentum, flame is long, heat-shock resistance is better.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a full-oxygen combustion nozzle for spray gun brick, it is characterized in that, described nozzle brick is rectangular parallelepiped, middle part is provided with in the inner little outer oxygen of typhon mouth shape and the hybrid channel of fuel, the top of the hybrid channel of described oxygen and fuel, left side and right side are distributed with columned upper oxygen channel, left oxygen channel and right oxygen channel respectively, and an oxygen in cylindric or oval column or fuel gas passage are arranged at the bottom of the hybrid channel of described oxygen and fuel.
2. nozzle brick according to claim 1, it is characterized in that, in the hybrid channel of described oxygen and fuel and oxygen or fuel gas passage, be equipped with the fuel channel for providing solid or liquid fuel, described fuel channel stretches in passage corresponding to described nozzle brick, but does not run through.
3. nozzle brick according to claim 2, it is characterized in that, described solid or liquid fuel are heavy oil, coal tar, petroleum coke powder etc.
4. according to the arbitrary described nozzle brick of claim 1-3, it is characterized in that, described upper oxygen channel, left oxygen channel, right oxygen channel, oxygen or fuel gas passage and fuel channel can use separately or simultaneously.
5. the preparation method of the arbitrary described nozzle brick of claim 1-4, it is characterized in that, it is the mixing of 30-36% zircon, 52-60% aluminum oxide and 5-18% kaolin by mass percentage, then dry-pressing becomes base, again through calcining, pulverizing, batching, mixing, mechanical pressing, eventually pass and burn till, obtain the nozzle brick of finished product; Described batching, for press mass percentage, adds the chromic oxide of 5-12% after 88-95% calcining is pulverized in mixture.
6. a full-oxygen combustion spray gun, comprise the arbitrary described nozzle brick of rifle body, connection metal part and claim 1-4, described rifle body and described nozzle brick are joined together to form described full-oxygen combustion spray gun by described connection metal part.
7. a glass melter, is characterized in that, spray gun wherein and nozzle brick are full-oxygen combustion spray gun described in claim 6 and the arbitrary described full-oxygen combustion nozzle for spray gun brick of claim 1-4.
8. a glass, is characterized in that, uses full-oxygen combustion spray gun described in claim 6 and the arbitrary described full-oxygen combustion nozzle for spray gun brick of claim 1-4 to fire and form in glass melter described in claim 7.
9. fire a method for glass described in claim 8, it is characterized in that,
When described glass needs reductibility flame, open the hybrid channel of oxygen and fuel and upper oxygen channel, or open geseous fuel and the fuel channel wherein of oxygen or fuel gas passage;
When described glass needs neutral flame, open oxygen and the hybrid channel of fuel, left oxygen channel and right oxygen channel simultaneously;
When described glass needs oxidizing flame, open oxygen and the hybrid channel of fuel, left oxygen channel, right oxygen channel and oxygen or fuel gas passage;
When described glass is high melting glass, opening oxygen and the hybrid channel of fuel, left oxygen channel, right oxygen channel and oxygen or fuel gas passage, is now oxygen in described oxygen or fuel gas passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648648.XA CN104341088B (en) | 2014-11-14 | 2014-11-14 | Spray nozzle brick for oxy-fuel combustion spray gun, manufacturing method and spray gun and melting furnace with spray nozzle brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410648648.XA CN104341088B (en) | 2014-11-14 | 2014-11-14 | Spray nozzle brick for oxy-fuel combustion spray gun, manufacturing method and spray gun and melting furnace with spray nozzle brick |
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| CN104341088A true CN104341088A (en) | 2015-02-11 |
| CN104341088B CN104341088B (en) | 2017-04-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179970A (en) * | 2018-11-12 | 2019-01-11 | 东台中玻特种玻璃有限公司 | Coke-stove gas nozzle brick and its hot repair installation method |
| CN110642501A (en) * | 2019-09-29 | 2020-01-03 | 彩虹（合肥）液晶玻璃有限公司 | Burning gun for melting furnace |
| CN113477915A (en) * | 2021-06-30 | 2021-10-08 | 沈阳工业大学 | Energy-saving temperature raising device for baking steel ladle |
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| CN109179970A (en) * | 2018-11-12 | 2019-01-11 | 东台中玻特种玻璃有限公司 | Coke-stove gas nozzle brick and its hot repair installation method |
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| CN113477915A (en) * | 2021-06-30 | 2021-10-08 | 沈阳工业大学 | Energy-saving temperature raising device for baking steel ladle |
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| Publication number | Publication date |
|---|---|
| CN104341088B (en) | 2017-04-26 |
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Address after: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 91 Patentee after: Qinhuangdao glass industry research and Design Institute Co., Ltd. Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 91 Patentee before: Qinhuangdao Glass Industry Research and Design Inst. |