CN1205139C - Cooling mode for prolonging service life of glass pool furnace and reducing glass defect - Google Patents
Cooling mode for prolonging service life of glass pool furnace and reducing glass defect Download PDFInfo
- Publication number
- CN1205139C CN1205139C CNB031197337A CN03119733A CN1205139C CN 1205139 C CN1205139 C CN 1205139C CN B031197337 A CNB031197337 A CN B031197337A CN 03119733 A CN03119733 A CN 03119733A CN 1205139 C CN1205139 C CN 1205139C
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- Prior art keywords
- glass
- cooling
- tank furnace
- tank
- furnace
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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
- C03B5/44—Cooling arrangements for furnace walls
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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
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
The present invention relates to a cooling mode for prolonging the service life of a glass tank furnace and reducing glass defects, which belongs to the field of glass melting and comprises a traditional wind cooling system arranged on the outside of a tank wall of the existing glass tank furnace. Forced and controlled wind cooling is implemented along the whole circumference of the contact surface between glass metal and tank wall bricks at the height of a liquid level line; outlets and inlets of cooling wind are periodically arranged along the external circumference of the wall of the tank furnace, so that the forced and controlled wind can flow through the outlets and the inlets to act on the contact surface directly and effectively. By adopting the forced and controlled cooling mode, the direct and forced wind cooling can be implemented on the three-phase boundary surface of the liquid level line, and the temperature near the three-phase boundary surface can be decreased effectively, so that the rate of the erosion of the glass metal on the tank wall bricks can be reduced largely to prolong the service life of the tank furnace and reduce various glass defects caused by erosion.
Description
Technical field
The invention belongs to the glass melting field, specially refer to a kind of type of cooling that prolongs glass melting furnace work-ing life and reduce glass defect.
Background technology
In the production of teletron with glass bulb and all sized glass goods (as float glass), the most key equipment is glass melting furnace in the televisor.In tank furnace,, generally after 5～7 years, repair stove again with regard to having to and stop production because glass metal is to the erosion action of pool wall refractory brick.If newly-built tank furnace not only causes a large amount of direct expensess, and because of blowing out, build by laying bricks or stones again, heating-up furnace heats up until returning to stably manufactured, at least also needs the cycle about 1 to 2 months.For enterprise, the production and operation loss that causes is surprising especially.In addition, at tank furnace liquid level line place,, also cause a large amount of production losses as calculus, plethora, striped and bubble etc. by the defective of the glass quality that refractory corrosion brought.Because can aggravating pool wall, high temperature corrodes, the glass defect that causes the tank furnace lost of life and refractory materials to form, thus greatly limited the potentiality that improve fusion, clear quality, increase load and fusing by intensification.How to provide a kind of technical scheme, when can reducing the glass defect that refractory materials causes, can prolong tank furnace work-ing life again, this is that world glass industry expert and technician thirst for the problem that solves again making great efforts to inquire into.Our company's development group is not being done any change to existing tank furnace operating procedure, fusion quality to glass does not produce any disadvantageous effect, the firing system of tank furnace, the Hardware configuration of Controlling System etc. are not done under the situation of any change, by a large amount of tests and improvement repeatedly, summed up a kind of type of cooling, make investment little, scheme is easy to implement.
For present tank furnace structure, generally all from the pool wall outside pool wall is implemented the air-cooled of maximum strength at the liquid level line place.This method is for the new tank furnace of firm operation, because pool wall is thicker, thermal conductivity is little, and actual air cooling effect is very poor, can't contain the erosion of pool wall in time, effectively.Therefore, this cooling performance is only in the later stage in tank furnace life-span, and when the liquid level line place was etched 5～10mm left and right sides by original thickness, outside air-cooled ability had corroded obviously effect to slowing down tank block.And pool wall situation at this moment generally have to begin the tank furnace cold repair because collapsing etc. of the crackle that causes of the temperature difference and top brick body is very dangerous.During according to actual behaviour in service of tank furnace and cold repair tank furnace to the actual observation of tank block, the three phase boundary place of glass metal bit line, be gas phase (tank furnace internal-combustion space), liquid phase (the high temp glass liquid of tank furnace inside) and solid phase (contacting the pool wall refractory brick of glass metal), be that pool wall corrodes the most serious part, the erosion of the tank block body that liquid level line is following is then much smaller, therefore, the erosion of liquid level line is to cause pool wall must carry out the major cause that cold repair is changed after 5～7 years.Simultaneously, this place's erosion is again the main source that causes occurring on the glasswork defectives such as calculus, dross, striped and bubble.
According to the erosion mechanism of refractory materials, when the temperature of glass metal of contact refractory materials more than 1200C, the every rising 50C of temperature of glass liquid, then the erosive velocity at three phase boundary place just almost increases to original 2 times.Therefore, if the temperature of the glass metal of this place contact directly can be reduced 50C, then glass metal also will be reduced to originally 1/2 to the erosive velocity of refractory materials, and the work-ing life of tank block just can corresponding prolongation 1 times; When this place's temperature reduces 100C, then will can reach 20～28 years near original 4 times the work-ing life of pool wall.If the temperature that should locate is below 1200C, then glass metal will be almost 0 to the erosive velocity of refractory materials, the theoretical service life of tank block will be more than 30～40 years, not only can not become the factor in restriction tank furnace life-span again, and follow slowing down or stopping of refractory corrosion speed, above-mentioned defective contained in the glass metal of then founding also will reduce significantly, prolongs the tank furnace life-span and reduces by two important goals of glass defect thereby fundamentally reach.To general glass, when 1450～1500C, temperature improves 1C, and then melting rate can improve 1%.Because of worrying the erosion of high temperature again to pool wall, thereby temperature of fusion is further improved, this will greatly help to eliminate fusion and clarify bad, improve the melting rate and the load of tank furnace, thereby can drive whole glass smelting quality and found increasing substantially and the tank furnace life-time dilatation of efficient.
Summary of the invention
The technical issues that need to address of the present invention are, corresponding liquid level line place pool wall outside air cooling effect is very poor in tank furnace, can't pool wall be corroded timely and effective containment glass, and this place's refractory corrosion causes many unfavorable factors such as glass quality defective, and adopt a kind of type of cooling again, overcome above-mentioned essential defect, prolonging glass melting furnace work-ing life, and reduce the glass quality defective.The objective of the invention is to adopt following technical proposals to realize, a kind of method of cooling that prolongs glass melting furnace work-ing life and reduce glass defect, comprise and be built up in the outside traditional air cooling system of pool wall in the glass melting furnace, it is characterized in that, along liquid level line height place's glass metal and tank block contact surface entire circumference, it is controlled air-cooled to implement pressure, periodically is provided with the cooling air entry and exit along tank furnace wall neighboring, makes to force controlled wind to pass through the direct effective function in this aperture in described contact surface.This programme adopts air gas as cooling medium.The cooling position is positioned at the three phase boundary place, promptly by tank furnace internal-combustion space as gas phase, tank furnace internal high temperature glass metal as liquid phase and the pool wall refractory brick that contacts glass metal as the formed three phase boundary of solid phase place.
The controlled air-cooled passage of described pressure is directly to paste the tuckstone of ining succession by the tank furnace wall outside to penetrate the tank furnace pars intramuralis.Present technique has fundamentally broken through the drawback of existing tank furnace structure, promptly uses the initial stage by the outer common cooling system of tank furnace wall is existing at tank furnace in the past, and pool wall is thick, and inner liquid level line place cooling performance is poor, and the pool wall erosive velocity is very fast; And tank furnace uses the later stage, because pool wall constantly is etched attenuation, and causes unmanageable influence such as inner liquid level line place cooling performance increase.The present invention adopts the direct wind cooling method of simple and safe pressure, just can effectively reduce the three phase boundary temperature when tank furnace is just brought into use, and the cooling position is positioned at the inner described three phase boundary of tank furnace place, described three phase boundary, and its implication is liquid phase--glass metal; Solid phase--refractory brick; Gas phase--with the gas of glass metal and refractory brick touching position.Thereby reduce the erosive velocity of tank furnace nogging.Keep original thickness of tank furnace wall and intensity, prolong the tank furnace life-span, reduce because the various glass defects that the erosion action of tank furnace nogging causes.The invention has the beneficial effects as follows, the controlled type of cooling of this pressure makes cooling air directly contact the pool wall inboard of glass metal, rather than the outside of pool wall, three phase boundary place to liquid level line implements direct air blast cooling, can reduce near the temperature of three phase boundary effectively, thereby can bigger reduction herein glass metal the erosive velocity of tank block is prolonged the tank furnace life-span, reduce because the various glass defects that erosion action causes.It is cooling medium that the manner adopts air gas.
Description of drawings
Fig. 1 is the erosion results of general tank furnace tank block
Fig. 2 is the inboard direct air-cooled front schematic view in liquid level line place in the tank furnace
Fig. 3 A is the AA schematic cross-section of Fig. 2
Fig. 3 B is the BB schematic cross-section of Fig. 2
Embodiment
The erosion results of representing conventional tank furnace tank block with reference to Fig. 1.Liquid level line will be fallen in the pond with the upper part in the later stage in furnace life, and pool wall almost will be penetrated fully, wherein arch top 1 is the tank furnace top cover, there are two steel columns 2 of symmetry both sides, the tank furnace top is a breastwork 3, coupled is tuckstone 4, the stove outside is provided with cooling air system 5, pool wall is 7 all around, represents to have cooling air gangway 6 in the method for cooling of the present invention on pool wall with reference to Fig. 2, with reference to Fig. 3 A, 3B, the view of two cross section BB, AA in the presentation graphs 2, BB cross section are to cut along position, cooling air gangway, and the AA plane is to cut along all the other planes.
Claims (4)
1. method of cooling that prolongs glass melting furnace work-ing life and reduce glass defect, comprise and be built up in the outside traditional air cooling system of pool wall in the glass melting furnace, it is characterized in that, along liquid level line height place's glass metal and tank block contact surface entire circumference, implement to force controlled air-cooled, periodically be provided with the cooling air entry and exit along tank furnace wall neighboring, make and force controlled wind to pass through the direct effective function in this aperture in described contact surface.
2. method of cooling according to claim 1 is characterized in that, adopts air gas, as cooling medium.
3. method of cooling according to claim 1, it is characterized in that the cooling position is positioned at by tank furnace internal-combustion space as gas phase, tank furnace internal high temperature glass metal as liquid phase and the pool wall refractory brick that contacts glass metal as the formed three phase boundary of solid phase place.
4. method of cooling according to claim 1 is characterized in that, the controlled air-cooled passage of described pressure is directly to paste the tuckstone of ining succession by the tank furnace wall outside to penetrate the tank furnace pars intramuralis.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031197337A CN1205139C (en) | 2003-03-10 | 2003-03-10 | Cooling mode for prolonging service life of glass pool furnace and reducing glass defect |
| PCT/CN2004/000191 WO2004080904A1 (en) | 2003-03-10 | 2004-03-10 | A cooling method for prolonging service life of glass tank furnace and decreasing glass defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031197337A CN1205139C (en) | 2003-03-10 | 2003-03-10 | Cooling mode for prolonging service life of glass pool furnace and reducing glass defect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1473779A CN1473779A (en) | 2004-02-11 |
| CN1205139C true CN1205139C (en) | 2005-06-08 |
Family
ID=31195063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031197337A Expired - Fee Related CN1205139C (en) | 2003-03-10 | 2003-03-10 | Cooling mode for prolonging service life of glass pool furnace and reducing glass defect |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1205139C (en) |
| WO (1) | WO2004080904A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100515933C (en) * | 2006-09-22 | 2009-07-22 | 云南天创科技有限公司 | Polyfurnace with corrosion protection device and corrosion protection method for furnace lining |
| CN102659300B (en) * | 2012-04-12 | 2015-02-25 | 巨石集团有限公司 | Method for prolonging service life of tank furnace melter bottom |
| CN103951162B (en) * | 2014-05-10 | 2017-06-13 | 蚌埠玻璃工业设计研究院 | A kind of easy attack sites cooling device of Flat Glass Furnace pool wall |
| JP6576193B2 (en) * | 2015-09-30 | 2019-09-18 | Ａｇｃセラミックス株式会社 | Electrocast refractory tax tone and melting kiln |
| CN108083615B (en) * | 2017-12-07 | 2024-05-24 | 郑州旭飞光电科技有限公司 | Glass kiln cooling system and method for prolonging service life of glass kiln |
| CN109384371A (en) * | 2018-09-19 | 2019-02-26 | 彩虹（合肥）光伏有限公司 | A kind of vertical cooling structure device of tank block |
| CN112811790A (en) * | 2021-01-13 | 2021-05-18 | 郑州旭飞光电科技有限公司 | Glass kiln and method for prolonging service life of glass kiln |
| CN112919775B (en) * | 2021-04-25 | 2022-11-01 | 中国建材桐城新能源材料有限公司 | Stepped kiln pool of flat glass transverse flame melting kiln |
| CN113845292B (en) * | 2021-11-08 | 2023-08-11 | 中国建材国际工程集团有限公司 | Tank wall cooling system for ultra-white glass production and glass melting furnace |
| CN116874165B (en) * | 2023-09-08 | 2024-01-02 | 漳州旗滨光伏新能源科技有限公司 | Control method of glass melting furnace production system and glass melting furnace production system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918949A (en) * | 1974-07-10 | 1975-11-11 | Ppg Industries Inc | Method and apparatus for preventing erosion of a glass furnace basin wall |
| SU637337A1 (en) * | 1976-06-18 | 1978-12-20 | Государственный научно-исследовательский институт стекла | Method of cooling refractory brickwork of glass-making furnace |
| SU1041525A1 (en) * | 1982-02-24 | 1983-09-15 | Научно-Производственное Объединение "Техэнергохимпром" | Device for cooling refractory masonry of glass melting furnace |
| JPS60108323A (en) * | 1983-11-14 | 1985-06-13 | Nippon Sheet Glass Co Ltd | Glass smelting furnace tank |
| JPH02212322A (en) * | 1989-02-14 | 1990-08-23 | Nippon Electric Glass Co Ltd | Glass melting furnace |
| DE4039601A1 (en) * | 1990-12-12 | 1992-06-17 | Sorg Gmbh & Co Kg | MELTING TUB FOR GLASS TUBE OVEN WITH PALISADES STONES AND OPERATING METHOD FOR THIS |
-
2003
- 2003-03-10 CN CNB031197337A patent/CN1205139C/en not_active Expired - Fee Related
-
2004
- 2004-03-10 WO PCT/CN2004/000191 patent/WO2004080904A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004080904A1 (en) | 2004-09-23 |
| CN1473779A (en) | 2004-02-11 |
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