CN102092921B - Producing method and producing device of float glass - Google Patents
Producing method and producing device of float glass Download PDFInfo
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- CN102092921B CN102092921B CN201010593054.5A CN201010593054A CN102092921B CN 102092921 B CN102092921 B CN 102092921B CN 201010593054 A CN201010593054 A CN 201010593054A CN 102092921 B CN102092921 B CN 102092921B
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- Prior art keywords
- leer
- gas
- glass ribbon
- glass
- acid gas
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/20—Composition of the atmosphere above the float bath; Treating or purifying the atmosphere above the float bath
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
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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
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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)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention relates to a producing method and a producing device of a float glass. The producing method comprises the process of moving the glass ribbon which is formed in a float bath and is lifted from the float bath by a lifting part to a slow cooling furnace. The slow cooling furnace is used for slowly cooling the glass ribbon to a temperature below the strain point of the glass. Sulfurous acid gas is supplied from a nozzle disposed at the upstream of the slow cooling furnace to the lower surface of glass ribbon which is moved in the slow cooling furnace. An exhausted chamber is disposed in the region that is the downstream of the nozzle position for attracting the gas in the slow cooling furnace. An airflow of sulfurous acid gas is formed at the periphery of the glass ribbon along the moving direction of the glass ribbon. The gas is guided into the exhausted chamber which discharges the left sulfurous acid gas to the outside.
Description
Technical field
The present invention relates to manufacture method and the manufacturing installation of float glass, relate in particular to manufacture method and the manufacturing installation of the float glass of the protective membrane that is formed for anti-flaw in leer.
Background technology
About float glass, as shown in Figure 4, melten glass is supplied in the molten tin 43 of float bath 42, be configured as the ribbon glass 44 with expectation thickness and width.The ribbon glass 44 being shaped from the outlet of float bath 42 by runner 48 pull-ups of the lifting parts 45 with float bath 42 adjacent settings, by leer 46 annealing and cooling, and formation glass ribbon (float glass) 41.Then, this glass ribbon 41 is cooled to after can cut room temperature be cut to the size of regulation by shut-off device 53 by annealing furnace 47 again.During this, by carrying roller 51 traction moving glass bands 41, thereby can manufacture continuously.
Be known in above-mentioned float glass manufacturing process, for prevent because of above-mentioned carrying roller 51 produce flaws and after carrying time or while conveying produce flaw, to the plate face of the glass ribbon 41 being the shaped sulphurous acid gas (SO that jets
2) formation vitriol protection tunicle.For example; in patent documentation 1, recorded following structure;; as shown in Figure 4; at the upstream region of leer 46 be provided for the jetting nozzle 54 of sulphurous acid gas, from this nozzle 54, to the glass ribbon 41 winding-up sulphurous acid gas carrying by carrying roller 51, form protection tunicles in leer 46.In the leer 46 of high temperature, the sulphurous acid gas of winding-up on glass ribbon 41 and the constituent of glass etc. react, and form the vitriol such as sodium sulfate protect tunicle on the surface of glass ribbon 41.This vitriol protection tunicle is finally removed by cleaning.
Patent documentation 1: No. 02/051767 brochure of International Publication
Summary of the invention
In the situation that in the leer of float glass manufacturing device, form vitriol protection tunicle, at the upstream of the high leer of temperature winding-up sulphurous acid gas.In patent documentation 1; by be provided with the nozzle sulphurous acid gas of jetting in the region of being divided by spaced walls of leer upstream; increase the concentration of the sulphurous acid gas in this region and improve the reaction efficiency with glass, thereby forming efficiently protection tunicle on the surface of glass ribbon.But even if jet sulphurous acid gas in the region of being divided by spaced walls, remaining sulphurous acid gas also flows out in leer largo, this sulphurous acid gas is trapped in leer, or from leer, leaks into outside again.
Residue sulphur dioxide in such leer is known from experience the structural part of corrosion leer, or flow into the lifting parts adjacent with leer and similarly corrode the structural part of lifting parts from the gap of carrying roller, not only produce large infringement, and on the surface of dropping on glass ribbon due to rust or the erosion of the structural part being corroded, or adhere to, be bonded on roller surface, and be created in, on glass ribbon surface, adhere to foreign matter or produce the shortcomings such as flaw, cause the quality of the float glass that obtains to decline and yield rate reduction.
Therefore; in patent documentation 1, recorded following content;; the in the situation that in box annealing kiln " sealedlehr " (lifting parts), winding-up sulphurous acid gas forming protection tunicle; in order to prevent that sulphurous acid gas from flowing into float bath and polluting the molten tin float bath from box annealing kiln; and being adjacent to arrange suction nozzle with nozzle, the remaining sulphurous acid gas of the protection tunicle that is not used to form glass ribbon in the sulphurous acid gas that attracts to jet, is expelled to outside system.But, by such method, be difficult to eliminate the problems referred to above in leer.
The present invention proposes in view of the above problems; its object is to provide manufacture method and the manufacturing installation of float glass, and it can form reliably the protection tunicle of adequate thickness and can alleviate or prevent that sulphurous acid gas from leaking to structural part outside and corrosion leer in leer on the plate face of glass ribbon.
The present invention obtains according to the result of wholwe-hearted research in order to achieve the above object, a kind of manufacture method of float glass is provided, comprise and will in float bath, be shaped and by lifting parts, from the glass ribbon of described float bath pull-up, be carried to the operation of leer, this leer is for arriving below the strain point temperature of glass by described glass ribbon slow cooling, wherein, the lower surface of the described glass ribbon of carrying in from the nozzle of the upstream portion setting at this leer to described leer is supplied with sulphurous acid gas, and then arrange described nozzle position downstream region division exhaust chest and attract the atmosphere in described leer, surrounding at described glass ribbon forms the air-flow of described sulphurous acid gas along the carrying direction of described glass ribbon thus, and described air-flow is guided to described exhaust chest, remaining described sulphurous acid gas is expelled to outside.
Preferably in the downstream side of described exhaust chest, be provided with air supply chamber, from this air supply chamber, to described glass ribbon, supply with extraneous gas, at the rear of described exhaust chest, form the atmosphere that is malleation with respect to outside thus.
Preferably the aperture of the rotating speed of the vent fan arranging in the gas exhaust duct being communicated with described exhaust chest and/or the windscreen that arranges is controlled to regulate free air delivery in described gas exhaust duct.
Preferably the aperture of the rotating speed of the air supply fan arranging in the steam line being communicated with described air supply chamber and/or the windscreen that arranges is controlled to regulate air demand in described steam line.
More than preferably the temperature in described exhaust chest being remained to the acid dew point of described sulphurous acid gas in described leer.
In addition, the invention provides a kind of float glass manufacturing device, it has leer, this leer for by float bath, be shaped and by lifting parts from the glass ribbon slow cooling of described float bath pull-up below the strain point temperature of glass, wherein, upstream portion at this leer is provided with nozzle, this nozzle to just in this leer by the lower surface winding-up sulphurous acid gas of the described glass ribbon carried of carrying roller, the downstream area that the position of described nozzle is set the exhaust chest that attracts the atmosphere in described leer is arranged on described glass ribbon above.
Preferably in the downstream side of described exhaust chest, be provided with air supply chamber, this air supply chamber is for supplying with extraneous gas and forming at the rear of described exhaust chest the atmosphere that is malleation with respect to outside to described glass ribbon.
Preferably in the downstream side of described exhaust chest, above the described glass ribbon of carrying in described leer and/or below be provided with dividing plate.
The structural part being preferably exposed in the atmosphere of top of the described glass ribbon of carrying in described leer is formed by acid proof non-fire material.
Preferably, before the gas exhaust duct being communicated with described exhaust chest, be communicated with and be provided with for described sulphurous acid gas being carried out to the laveur of off gas treatment with this gas exhaust duct.
According to the present invention, because form the air-flow of the atmosphere that contains sulphurous acid gas along the carrying direction of glass ribbon in the surrounding of glass ribbon, so can also form by the sulphurous acid gas supporting in this air-flow protection tunicle.As a result, especially the lower surface at glass ribbon forms protection tunicle efficiently, thereby can prevent the flaw because of the generation of carrying roller.And, can alleviate or prevent that sulphurous acid gas is from being leaked to the structural part etc. of outside and corrosion leer in leer.
Accompanying drawing explanation
Fig. 1 is the longitudinal section explanatory view of the float glass manufacturing device of the preferred embodiment of the present invention.
Fig. 2 is the vertical view (only illustrating half) of the A-A portion in Fig. 1.
Fig. 3 is the cross sectional illustration figure of terminal part of the leer of other float glass manufacturing devices preferred embodiment of the present invention.
Fig. 4 is the cross sectional illustration figure of existing float glass manufacturing device.
Label declaration
1: glass ribbon
2: float bath
3: molten tin
4: ribbon glass
5: lifting parts
6: leer
7: annealing furnace
8: runner
9: cover member
10: cover member
11: carrying roller
12: exhaust chest
13: shut-off device
14: nozzle
15: gas exhaust duct
16: windscreen
17: vent fan
18: CD-ROM drive motor
19: air supply chamber
20: steam line
21: air supply fan
22: windscreen
23: CD-ROM drive motor
26: dividing plate
27: cylindrical member
28: cylindrical member
Embodiment
Below, with reference to the accompanying drawings of embodiments of the present invention.In addition, in this manual, the lower surface of said glass ribbon refers to that glass ribbon contacts the surface of a side with carrying roller, said below refer to described lower surface towards direction, the face (upper surface) that the top of said glass ribbon refers to the opposition side of described lower surface towards direction.
Fig. 1 is the longitudinal section explanatory view of the float glass manufacturing device of the preferred embodiment of the present invention, and Fig. 2 is the vertical view of the A-A portion in Fig. 1.In Fig. 2, only illustrate half of leer, not shown half is symmetrical with it, is identical.As shown in the figure, the glass ribbon 1 that is configured as ribbon glass 4 in the molten tin 3 of float bath 2, is transferred in the leer 6 arranging continuously with lifting parts 5 from molten tin 3 pull-ups by the runner 8 arranging in the lifting parts 5 in the exit at float bath 2.In lifting parts 5, runner 8 is configured on the height higher than the molten tin surface of float bath 2, the glass ribbon 1 that is configured as ribbon glass 4 in float bath 2 is raised after roller 8 pull-ups, cooling until become stable state in the lifting parts 5 with cover member 9, is then carried to leer 6.
Leer 6 is and manufactures the general leer using in most of glassy products and have equally the adjustable equipment of the temperature of cover member 10, is set side by side with a plurality of carrying rollers 11 in inside.These carrying rollers 11 are driven under constant speed by CD-ROM drive motor (not shown), thereby draw or carry banded glass ribbon 1 with the constant speed determining.In this case, can make part carrying roller not link with driven with CD-ROM drive motor, thereby rotate freely.The length of this leer 6 is tens of m, in the leer 6 with cover member 10, carry out temperature treatment, to obtain temperature, for example, from the high temperature (, approximately 600～750 ℃) of upstream portion, be decremented to the temperature distribution of the terminal temperature (for example, approximately 200～400 ℃) of downstream portion.Thus, glass ribbon 1 is by during 11 carryings of carrying roller in leer 6, and slow cooling, to the temperature below the strain point temperature of glass, makes not residual undesirable thermal stresses in glass.And conventionally before the outlet that arrives leer 6, glass ribbon 1 is cooled to more the temperature lower than the strain point temperature of glass.Because by the chilled glass ribbon 1 of annealing operation in leer 6 as mentioned above, in the outlet of leer 6, also there is the high temperature of approximately 200～400 ℃, thereby after the temperature that is cooled to cut off by annealing furnace 7 again, by shut-off device 13, be cut to the size of regulation.If annealing furnace 7 can, by the glass ribbon cools of slow cooling to approaching room temperature, can not be the adjustable equipment of temperature with cover member 10 as leer 6.
The present invention as shown in Figure 1, upstream portion at leer 6 is provided with the nozzle 14 for the lower surface winding-up sulphurous acid gas to glass ribbon 1, and the downstream area of (sulphurous acid gas winding-up position) is provided with exhaust chest 12 and attracts the atmosphere in leer 6 in the position that nozzle 14 is set, thereby the sulphurous acid gas of upstream portion is formed in the carrying direction as the air-flow of the atmosphere that contains sulphurous acid gas and at glass ribbon 1 in the surrounding of glass ribbon 1, and guide to exhaust chest 12, from exhaust chest 12, be expelled to outside.Thus; in slow cooling operation in leer 6; by nozzle 14 upstream the lower surface winding-up sulphurous acid gas of the glass ribbon in the condition of high temperature 1 of portion form the anti-protective layer (protection tunicle) flaw for being formed by vitriol, prevent the flaw that produces because of carrying roller and the flaw of generation when carrying or during conveying afterwards.
The present invention arranges described nozzle 14 by the upstream portion at leer 6, and the lower surface winding-up sulphurous acid gas to the glass ribbon 1 of high temperature, can form protection tunicle well.Get over high temperature, the easier lower surface at glass ribbon 1 forms by the protection tunicle producing from the sulfate formation of sulphurous acid gas.In the present invention, the upstream portion of leer 6 is above-mentioned such regions of managing as high temperature.As the temperature that is suitable for forming the glass ribbon 1 of protection tunicle, slightly different according to glass types etc., but preferably 500～750 ℃, more preferably 600～750 ℃.
As forming the preferred sulphurous acid gas of gas of protecting tunicle to use.Chemical composition in sulphurous acid gas and glass reacts and on the plate face of glass ribbon 1, forms the vitriol tunicles such as sodium sulfate, and this tunicle is easy to be cleaned and removed by water.Sulphurous acid gas is used separately conventionally, but can contain as required other gas.In the situation that the upstream portion of leer 6 is to glass ribbon 1 winding-up sulphurous acid gas, for fast cooling temperature is glass ribbon more than strain point and do not destroy slow cooling and process, preferably sulphurous acid gas is preheating to for example 400～600 ℃ of left and right.
The present invention is provided with exhaust chest 12 at the downstream area that the position of nozzle 14 is set.Fig. 1 is arranged on exhaust chest 12 example of the downstream portion of leer 6.Sulphurous acid gas at the upstream portion of leer 6 from from nozzle 14 to glass ribbon 1 winding-up mostly reacts with the glass ingredient of glass ribbon 1 and forms vitriol tunicle at the lower surface of glass ribbon 1, and still remaining sulphurous acid gas is included in the atmosphere in the stove of leer 6 upstream portions.Exhaust chest 12 has following function;; by downstream, attract the atmosphere that contains sulphurous acid gas in the stove of this upstream portion; in the surrounding of glass ribbon 1 and form the air-flow of the atmosphere that contains sulphurous acid gas along the carrying direction of glass ribbon 1; in order to avoid in the stagnant condition of the interior generation sulphurous acid gas of leer 6; and the air-flow of the atmosphere that contains sulphurous acid gas forming by the surrounding at glass ribbon 1 also forms protection tunicle, and further remaining sulphurous acid gas is discharged to outside.If exhaust chest 12 is arranged on the end (downstream end) of leer 6, the air-flow that contains the atmosphere of sulphurous acid gas is directed to the end of leer 6, by exhaust chest 12, discharge, thereby can avoid a part for air-flow to flow to the rear (downstream side) of exhaust chest 12.But the setting position of exhaust chest 12 is so long as the downstream area of Gas injection position can be also middle reaches portion or the downstream portion of leer 6.But, be preferably arranged on temperature lower than the glass temperature region (being less than 500 ℃) that is suitable for forming the glass ribbon temperature of protecting epithelium.
Described exhaust chest 12 has cylindrical member 27, to efficiently attract the atmosphere that contains sulphurous acid gas in leer 6, on the top of this cylindrical member 27, is provided with for the atmosphere of attraction is discharged to outside gas exhaust duct 15.Gas exhaust duct 15 is communicated with exhaust chest 12.The shape of cylindrical member 27 without particular limitation of, but in order to attract equably the atmosphere in leer 6 as far as possible on the whole width of leer 6, shape of cross section is rectangle as shown in Figure 2, more than dual-side is preferably glass ribbon width, more preferably there is the size that is projected into outside from the end of carrying roller 11.The width a of cylindrical member 27 is mainly determined by the stove inner capacities of leer 6, but preferably its size is 0.5～4m.If a has such size, can in the situation that not hindering slow cooling operation, attract lentamente the atmosphere in leer 6.If a is too small, produce the pressure-losses, not preferred.And, for the position closer apart from glass ribbon 1 attracts the atmosphere in leer 6, near the air-flow of the atmosphere that formation contains sulphurous acid gas glass ribbon 1 as much as possible, be preferably set to the lower end of cylindrical member 27 and the interval (preferably 10～100mm, more preferably 10～50mm) of glass ribbon 1 interval regulation.Now, preferably the lower end of the upstream side of cylindrical member 27 than the lower end in downstream side further from glass ribbon, especially preferably away from 20～70mm.
By CD-ROM drive motor 18, drive and be arranged on the vent fan 17 in gas exhaust duct 15, discharge the gas in described exhaust chest 12.Can also be at the interior windscreen 16 that arranges of gas exhaust duct 15 to adjust the free air delivery of exhaust chest 12.The in the situation that of being provided with like this windscreen 16 in gas exhaust duct 15, can, by controlling the rotating speed of vent fan 17 and/or the aperture of windscreen 16, adjust the free air delivery of exhaust chest 12.While the winding-up amount etc. of considering the sulphurous acid gas of nozzle 14 winding-up, adjust the free air delivery of exhaust chest 12.
As described above exhaust chest 12 is arranged on to the example of leer 6 ends in the leer 6 shown in Fig. 1, the situation that exhaust chest 12 is arranged on to leer 6 inside has been described, but in the present invention, exhaust chest 12 can be arranged on outside the stove of leer 6.The method is not shown, exhaust chest 12 is arranged in the annealing furnace 7 adjacent with outlet as leer 6 ends, specifically remove leer 6 cover member 10 terminal part whole or bottom and exhaust chest 12 is set, wherein, the cover member 10 of leer 6 is divided leer 6 and is not covered between the annealing furnace 7 of member.As a result, exhaust chest 12 forms the end of leers 6 and forms the part of the cover member 10 of leer 6.The said end that exhaust chest 12 is arranged on to leer 6 comprises and above-mentioned exhaust chest 12 is adjacent to be arranged on the situation in annealing furnace with the export department of leer 6 in the present invention.
According to the method, whole atmosphere in leer 6 be directed to exhaust chest 12 and at the upstream portion of leer 6 the whole zone flows to end, and forming in the surrounding of glass ribbon 1 air-flow that contains sulphurous acid gas, remaining sulphurous acid gas is discharged from the end of leer 6.Thereby as exhaust chest 12 being arranged on to the situation of middle reaches portion in leer 6 or downstream portion, a part of in fact not worrying sulphurous acid gas is around to the rear of exhaust chest 12 and remain in leer 6.In addition, the method be because can utilize the annealing furnace that does not cover member that exhaust chest 12 is set, thereby has advantages of and need not significantly transform leer 6.
Fig. 3 shows other preferred implementation of the present invention.About this example, as shown in the figure, downstream side at the exhaust chest 12 of the downstream portion setting of leer 6 is provided with air supply chamber 19, and the glass ribbon 1 from this air supply chamber 19 to exhaust chest 12 rears is supplied with extraneous gas, at the rear of exhaust chest 12, forms the atmosphere that is malleation with respect to outside.At this, the rear of said exhaust chest 12 refers to the rear side of the exhaust chest 12 in the carrying direction of glass ribbon 1, specifically refers near the position downstream side (side contrary with float bath 2) of the exhaust chest 12 that arranges in leer 6.In the situation that exhaust chest 12 being arranged to leer 6, at the rear of exhaust chest 12, the sucking action by exhaust chest 12 is easy to form negative pressure state conventionally.Therefore, as mentioned above, in the situation that exhaust chest 12 is arranged on to leer 6 end, dust etc. may the export department from leer 6 flow in leer 6 together with extraneous gas, and are attached to the surface of glass ribbon 1.This example prevents such inflows such as dust by air supply chamber 19.
That is, as shown in Figure 3, in the downstream side of exhaust chest 12, be set side by side with air supply chamber 19, the glass ribbon 1 from this air supply chamber 19 to exhaust chest 12 rears is supplied with extraneous gas, and making the rear of exhaust chest 12 is malleation with respect to outside.This air supply chamber 19 has the cylindrical member 28 same with described exhaust chest 12, the shape of this cylindrical member 28 and method to set up are also basic identical (wherein with exhaust chest 12, preferably the lower end in the downstream side of cylindrical member 28 than the lower end of upstream side further from glass ribbon, especially preferably away from 20～70mm), on the top of cylindrical member 28, be provided with the steam line 20 that air feed is used.Steam line 20 is communicated with air supply chamber 19.In steam line 20, be provided with air supply fan 21 and windscreen 22.By CD-ROM drive motor 23, drive air supply fan 21 to air supply chamber 19 air feed, by controlling the rotating speed of air supply fan 21 and/or the aperture of change windscreen 22, adjust the air demand of air supply chamber 19.
And, preferably the downstream side of exhaust chest 12 (in the situation that of thering is air supply chamber 19 for exhaust chest 12 and air supply chamber 19 between), above the glass ribbon 1 in carrying in leer 6 and/or below dividing plate 26 (dividing plate in Fig. 3 above glass ribbon is not shown) is set.This is in order to improve exhaust efficiency or air feed efficiency.
In the situation that dividing plate 26 being arranged on above glass ribbon 1, between preferred separator 26 and glass ribbon 1, be spaced apart 10～100mm, 10～50mm more preferably, in the situation that by dividing plate 26 be arranged on glass ribbon 1 below, between the interval between preferred separator 26 and glass ribbon 1 or dividing plate front end and carrying roller periphery, be spaced apart 10～100mm, more preferably 10～50mm.The width of preferred separator 26 is wider than the width of exhaust chest 12.
As shown in this example, by air supply chamber 19 being set side by side with exhaust chest 12, and the rear (downstream side) of exhaust chest 12 is kept with respect to outside by the air feed of air supply chamber 19, be the malleation of 1～10Pa left and right, thereby the part that can prevent from guiding to the sulphurous acid gas of exhaust chest 12 flow to the rear of exhaust chest 12.Especially, in the situation that exhaust chest 12 and air supply chamber 19 are arranged at leer 6 end as this example, the part that can prevent sulphurous acid gas flows out to annealing furnace side from the terminal part of leer 6 after flowing to the rear of exhaust chest 12 again.In addition, because the rear quadrate part of the terminal part of leer 6 or air supply chamber 19 forms malleation with respect to outside, so can prevent that dust etc. from flowing in leer 6 from outside.
Above, the preferred embodiment of the present invention has been described, but be preferably exposed to the structural parts such as exhaust chest 12 in the atmosphere of at least glass ribbon 1 top of leer 6 and air supply chamber 19, by acid proof non-fire material, has been formed.This be because, if the material poor by acid resistance forms, can be corroded by sulphurous acid gas, its erosion drops on glass ribbon, or adhere to, be bonded on roller surface, thereby be created in, on glass ribbon surface, adhere to foreign matter or produce the shortcomings such as flaw, causing the quality of the float glass that obtains to reduce and decrease in yield.As this acid proof non-fire material, can enumerate stainless steel or concrete placement, ceramic-lined, Teflon (Teflon, registered trademark) processing etc.
In addition, if in leer 6, in exhaust chest 12, in gas exhaust duct 15 and interior etc. the temperature of steam line 20 form below the acid dew-point temperature (100～200 ℃) of sulphurous acid gas, in the interior winding-up of leer 6 to the sulphurous acid gas dewfall when contacting with above-mentioned member on the lower surface of glass ribbon 1, and dewfall is fallen and is polluted glass ribbon on glass ribbon, thus preferably in leer 6, in exhaust chest 12, in air supply chamber 19, in gas exhaust duct 15 and the temperature of steam line 20 remain the temperature higher than the acid dew point of sulphurous acid gas.
In addition, preferably before the gas exhaust duct 15 being communicated with exhaust chest 12, be communicated with and be provided with for sulphurous acid gas being carried out to the laveur of off gas treatment with this gas exhaust duct 15.
With reference to specific embodiment, understand in detail the present invention, but as well known to those skilled in the artly can in the situation that not departing from aim of the present invention and scope, add various distortion and correction.
The Japanese patent application 2009-282459 of the application based on proposing on December 14th, 2009, this with reference to and introduce its content.
The present invention is applicable at the high-temperature area of the leer of float glass manufacturing device the float glass process processing method with the protection tunicle used by the anti-flaw of its sulfate formation to float glass winding-up sulphurous acid gas.
Claims (16)
1. a manufacture method for float glass, comprises and will in float bath, be shaped and in lifting parts, from the glass ribbon of described float bath pull-up, be carried to the operation of leer, and this leer is used for described glass ribbon slow cooling to arrive below the strain point temperature of glass, wherein,
The lower surface of the described glass ribbon of carrying in from the nozzle of the upstream portion setting at this leer to described leer is supplied with sulphurous acid gas, and then only at middle reaches portion or the downstream portion of described leer in region in downstream as the position of described nozzle is set, exhaust chest is set and attracts the atmosphere in described leer, surrounding at described glass ribbon forms the air-flow of described sulphurous acid gas along the carrying direction of described glass ribbon thus, and described air-flow is guided to described exhaust chest, remaining described sulphurous acid gas is expelled to outside.
2. the manufacture method of float glass as claimed in claim 1, wherein,
Downstream side at described exhaust chest is provided with air supply chamber, from this air supply chamber, to described glass ribbon, supplies with extraneous gas, forms the atmosphere that is malleation with respect to outside thus at the rear of described exhaust chest.
3. the manufacture method of float glass as claimed in claim 1 or 2, wherein,
Aperture to the rotating speed of the vent fan arranging in the gas exhaust duct being communicated with described exhaust chest and/or the windscreen that arranges in described gas exhaust duct controls to regulate free air delivery.
4. the manufacture method of float glass as claimed in claim 2, wherein,
Aperture to the rotating speed of the air supply fan arranging in the steam line being communicated with described air supply chamber and/or the windscreen that arranges in described steam line controls to regulate air demand.
5. the manufacture method of float glass as claimed in claim 1 or 2, wherein,
More than the temperature in described exhaust chest being remained to the acid dew point of described sulphurous acid gas in described leer.
6. the manufacture method of float glass as claimed in claim 3, wherein,
More than the temperature in described exhaust chest being remained to the acid dew point of described sulphurous acid gas in described leer.
7. the manufacture method of float glass as claimed in claim 4, wherein,
More than the temperature in described exhaust chest being remained to the acid dew point of described sulphurous acid gas in described leer.
8. a float glass manufacturing device, has leer, this leer for by float bath, be shaped and lifting parts from the glass ribbon slow cooling of described float bath pull-up below the strain point temperature of glass, wherein,
Upstream portion at this leer is provided with nozzle, this nozzle to just in this leer by the lower surface winding-up sulphurous acid gas of the described glass ribbon carried of carrying roller, only as arrange the middle reaches portion of described leer in region in downstream of position of described nozzle or downstream portion the exhaust chest that attracts the atmosphere in described leer is arranged on described glass ribbon above.
9. float glass manufacturing device as claimed in claim 8, wherein,
Downstream side at described exhaust chest is provided with air supply chamber, and this air supply chamber is for supplying with extraneous gas and forming at the rear of described exhaust chest the atmosphere that is malleation with respect to outside to described glass ribbon.
10. float glass manufacturing device as claimed in claim 8 or 9, wherein,
In the downstream side of described exhaust chest, above the described glass ribbon of carrying in described leer and/or below be provided with dividing plate.
11. float glass manufacturing devices as claimed in claim 8 or 9, wherein,
The structural part being exposed in the atmosphere of top of the described glass ribbon of carrying in described leer is formed by acid proof non-fire material.
12. float glass manufacturing devices as claimed in claim 10, wherein,
The structural part being exposed in the atmosphere of top of the described glass ribbon of carrying in described leer is formed by acid proof non-fire material.
13. float glass manufacturing devices as claimed in claim 8 or 9, wherein,
Before the gas exhaust duct being communicated with described exhaust chest, be communicated with and be provided with for described sulphurous acid gas being carried out to the laveur of off gas treatment with this gas exhaust duct.
14. float glass manufacturing devices as claimed in claim 10, wherein,
Before the gas exhaust duct being communicated with described exhaust chest, be communicated with and be provided with for described sulphurous acid gas being carried out to the laveur of off gas treatment with this gas exhaust duct.
15. float glass manufacturing devices as claimed in claim 11, wherein,
Before the gas exhaust duct being communicated with described exhaust chest, be communicated with and be provided with for described sulphurous acid gas being carried out to the laveur of off gas treatment with this gas exhaust duct.
16. float glass manufacturing devices as claimed in claim 12, wherein,
Before the gas exhaust duct being communicated with described exhaust chest, be communicated with and be provided with for described sulphurous acid gas being carried out to the laveur of off gas treatment with this gas exhaust duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359607.4A CN103482852B (en) | 2009-12-14 | 2010-12-14 | The manufacture method of float glass and manufacturing installation |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009282459A JP5446819B2 (en) | 2009-12-14 | 2009-12-14 | Method and apparatus for manufacturing float glass |
| JP2009-282459 | 2009-12-14 |
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| CN201310359607.4A Division CN103482852B (en) | 2009-12-14 | 2010-12-14 | The manufacture method of float glass and manufacturing installation |
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| CN102092921A CN102092921A (en) | 2011-06-15 |
| CN102092921B true CN102092921B (en) | 2014-10-15 |
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|---|---|---|---|
| CN201010593054.5A Active CN102092921B (en) | 2009-12-14 | 2010-12-14 | Producing method and producing device of float glass |
| CN201310359607.4A Active CN103482852B (en) | 2009-12-14 | 2010-12-14 | The manufacture method of float glass and manufacturing installation |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310359607.4A Active CN103482852B (en) | 2009-12-14 | 2010-12-14 | The manufacture method of float glass and manufacturing installation |
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| JP (1) | JP5446819B2 (en) |
| KR (1) | KR101382826B1 (en) |
| CN (2) | CN102092921B (en) |
| TW (1) | TWI480238B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5048862B1 (en) * | 2011-10-28 | 2012-10-17 | シャープ株式会社 | Film formation method on glass substrate |
| CN102730941B (en) * | 2012-06-15 | 2015-03-25 | 中国新型建筑材料工业杭州设计研究院 | Suspension type tin groove cooling method and apparatus thereof |
| WO2014077371A1 (en) | 2012-11-16 | 2014-05-22 | 旭硝子株式会社 | Glass production method and glass production apparatus |
| JP2016117594A (en) * | 2013-04-16 | 2016-06-30 | 旭硝子株式会社 | Method and apparatus for manufacturing float glass |
| JP2017007870A (en) * | 2013-11-13 | 2017-01-12 | 旭硝子株式会社 | Manufacturing method of sheet glass |
| CN104261655B (en) * | 2014-09-17 | 2016-08-17 | 中国南玻集团股份有限公司 | The manufacture device of float glass |
| CN104261656A (en) * | 2014-09-19 | 2015-01-07 | 中国南玻集团股份有限公司 | Manufacturing device for float glass and protective layer forming device |
| JP2017001899A (en) * | 2015-06-05 | 2017-01-05 | 旭硝子株式会社 | Manufacturing method of float glass, and manufacturing apparatus of float glass |
| CN105082099B (en) * | 2015-08-27 | 2016-12-07 | 沪东重机有限公司 | A kind of scribble method for middling speed high power diesel engine stand blank |
| CN105252512B (en) * | 2015-10-30 | 2017-01-18 | 沪东重机有限公司 | Lineation method for inner cavity of machine base blank of large single-cylinder diesel engine |
| CN106746578B (en) * | 2016-12-21 | 2019-05-24 | 重庆重玻节能玻璃有限公司 | Float glass equipment |
| KR20210010458A (en) * | 2018-05-17 | 2021-01-27 | 에이지씨 가부시키가이샤 | Float glass manufacturing apparatus and float glass manufacturing method |
| CN112374735B (en) * | 2020-12-09 | 2022-06-21 | 蚌埠中光电科技有限公司 | Float glass annealing kiln sulfur dioxide jetting device |
| CN113371982B (en) * | 2021-07-23 | 2022-11-22 | 河北南玻玻璃有限公司 | Sulfur dioxide pipeline for float glass slag box |
| CN115157913A (en) * | 2022-06-30 | 2022-10-11 | 重庆昊晟玻璃股份有限公司 | Process for drawing gold on bottom of glass bottle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3689304A (en) * | 1969-04-23 | 1972-09-05 | Pilkington Brothers Ltd | Treating glass |
| WO2009148141A1 (en) * | 2008-06-06 | 2009-12-10 | 旭硝子株式会社 | Apparatus and method for producing plate glass |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678181B2 (en) * | 1988-10-27 | 1994-10-05 | セントラル硝子株式会社 | Glass surface treatment method |
| JPWO2002051767A1 (en) * | 2000-12-26 | 2004-10-07 | 日本板硝子株式会社 | Sheet glass having protective coating and method for producing the same |
-
2009
- 2009-12-14 JP JP2009282459A patent/JP5446819B2/en not_active Expired - Fee Related
-
2010
- 2010-12-06 TW TW099142436A patent/TWI480238B/en not_active IP Right Cessation
- 2010-12-14 CN CN201010593054.5A patent/CN102092921B/en active Active
- 2010-12-14 KR KR1020100127451A patent/KR101382826B1/en active IP Right Grant
- 2010-12-14 CN CN201310359607.4A patent/CN103482852B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3689304A (en) * | 1969-04-23 | 1972-09-05 | Pilkington Brothers Ltd | Treating glass |
| WO2009148141A1 (en) * | 2008-06-06 | 2009-12-10 | 旭硝子株式会社 | Apparatus and method for producing plate glass |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110068896A (en) | 2011-06-22 |
| CN103482852A (en) | 2014-01-01 |
| KR101382826B1 (en) | 2014-04-08 |
| TW201129512A (en) | 2011-09-01 |
| CN102092921A (en) | 2011-06-15 |
| JP5446819B2 (en) | 2014-03-19 |
| JP2011121834A (en) | 2011-06-23 |
| CN103482852B (en) | 2015-08-19 |
| TWI480238B (en) | 2015-04-11 |
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Address after: Tokyo, Japan Patentee after: AGC Corporation Address before: Tokyo, Japan Patentee before: Asahi Glass Co., Ltd. |