CN108069579B - Platinum passageway and improve equipment of glass clarification effect - Google Patents
Platinum passageway and improve equipment of glass clarification effect Download PDFInfo
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- CN108069579B CN108069579B CN201810110485.8A CN201810110485A CN108069579B CN 108069579 B CN108069579 B CN 108069579B CN 201810110485 A CN201810110485 A CN 201810110485A CN 108069579 B CN108069579 B CN 108069579B
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- steel structure
- humidity
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 238
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 118
- 239000011521 glass Substances 0.000 title claims abstract description 68
- 238000005352 clarification Methods 0.000 title claims abstract description 47
- 230000000694 effects Effects 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 91
- 239000010959 steel Substances 0.000 claims abstract description 91
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000004321 preservation Methods 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000012774 insulation material Substances 0.000 claims description 24
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 229910001260 Pt alloy Inorganic materials 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 23
- 239000000047 product Substances 0.000 description 23
- 239000001257 hydrogen Substances 0.000 description 20
- 229910052739 hydrogen Inorganic materials 0.000 description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000007788 liquid Substances 0.000 description 12
- 230000007547 defect Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000002860 competitive effect Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 229910000510 noble metal Inorganic materials 0.000 description 5
- 239000005304 optical glass Substances 0.000 description 5
- 239000011819 refractory material Substances 0.000 description 5
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000003487 electrochemical reaction Methods 0.000 description 3
- -1 hydrogen ions Chemical class 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000006060 molten glass Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000006066 glass batch Substances 0.000 description 1
- 238000005816 glass manufacturing process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/02—Forehearths, i.e. feeder channels
- C03B7/06—Means for thermal conditioning or controlling the temperature of the glass
-
- 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
- C03B5/225—Refining
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
The invention relates to a platinum channel and equipment for improving glass clarification effect, wherein the platinum channel comprises a clarification section (1), a stirring section (2) and a feeding section (3), and the clarification section (1) comprises: bellows type steel constructs (5), first heat preservation material (6), second heat preservation material (7), platinum pipe (8), steam pipeline (9), gas adjustment device (10), temperature detector (T), humidity detector (H), pressure detector (P), and vapour source (11), wherein, bellows type steel constructs (5) support second heat preservation material (7) in second heat preservation material (7) outside, second heat preservation material (7) support and keep warm platinum pipe (8), first heat preservation material (6) are in bellows type steel constructs (5) outside, keep warm bellows type steel constructs (5).
Description
Technical Field
The invention relates to a platinum channel and a glass manufacturing device and method, in particular to a platinum channel through which high-temperature glass solution flows in the glass manufacturing process, and a device and method for solving the problem that bubbles cannot be completely removed when glass is clarified in the platinum channel, and the quality, yield and production efficiency of products are affected.
Background
In the manufacturing process of TFT, LTPS substrate glass and optical glass, a kiln process melts batch into glass liquid, then the glass liquid reaches a platinum channel process for clarification and stirring, and after flowing out of the platinum channel process, the glass liquid passes through a feeding section, and then is sent to a forming process to be manufactured into a substrate glass plate semi-finished product, the semi-finished product is manufactured into a finished product after being processed, and then the finished product is packaged and transported to a panel manufacturer for use.
As technology advances and markets have increased demands for substrate glass and optical glass, which in turn has driven the demand for improved glass quality and market expectations, the substrate glass and optical glass have increased in optical quality, which has previously been subject to tolerable defects, such as one or more individual bubbles of less than 0.03mm diameter per substrate glass, which are now unacceptable to panel manufacturers, and which are difficult to completely remove from the finished glass throughout the substrate glass process.
In the manufacturing process of the substrate glass and the optical glass, after glass batch is melted in a kiln process, a large amount of bubbles are often associated, the bubbles are different in size, and the bubble elimination work is mainly completed in a clarification section of a platinum channel process. The temperature of the clarification section is often higher and reaches more than 1600 ℃, so that the purpose of the clarification section is to reduce the viscosity of glass liquid and obtain a better clarification effect. However, after the diameter of the bubbles is extremely small, the working limit of the clarification section of the platinum channel is reached, so that the bubbles cannot be completely removed, and bubble defects are formed in the glass finished product to influence the glass quality.
The above-mentioned conditions are conditions of elimination of bubbles brought about from a kiln process, and also a bubble is generated inside a platinum channel, which is decomposed under a high temperature environment due to moisture contained in a glass liquid to generate hydrogen ions and oxygen ions, and the hydrogen ions and oxygen ions form oxygen and hydrogen under electrochemical reaction due to a large amount of electrons contained in the glass liquid, and the platinum channel is mainly made of noble metal platinum, which has a catalyst effect at a high temperature to further promote the electrochemical reaction, and the chemical formula is as follows:
H2O←→H++OH-←→H2+O2
The electrochemical reaction mainly occurs in the area close to the inner pipe wall of the platinum channel, hydrogen molecules are small due to the hydrogen permeation effect of the platinum, and can pass through the inside of the platinum structure, however, oxygen molecules cannot pass through the inside of the platinum structure due to the fact that the oxygen molecules are relatively large, namely, hydrogen can penetrate through the inner pipe wall of the platinum, and then the oxygen molecules cannot penetrate through the inner pipe wall of the platinum channel. Since the hydrogen partial pressure inside the platinum tube wall is higher than the hydrogen partial pressure outside the platinum tube wall, there often occurs a phenomenon that hydrogen seeps out from inside the platinum tube and oxygen forms oxygen bubbles inside the platinum tube wall. And the glass flow speed in the area is lower than that in the central area, so that large bubbles are more easily formed by aggregation, the generated substrate glass is affected by the large bubbles, and the product yield is reduced.
The solution of the two bubbles is mainly completed in a clarification section, so that the clarification section of the platinum channel process is an important functional section, and the yield and quality of glass products are directly affected.
In the conventional process of manufacturing the substrate glass and the optical glass, the two bubbles are difficult to distinguish, and countermeasure measures are different and are also mutually restricted. The current method for solving the problems mainly comprises the steps of raising the temperature of a clarification section of a platinum channel to be higher than 1640 ℃ generally, particularly under the condition of higher productivity, lowering the viscosity of glass liquid, enabling bubbles to float upwards and be removed more easily, but solving the bubbles, generating a great amount of platinum volatile defects and influencing the service life of the platinum channel.
Meanwhile, when the temperature of a clarification section of the platinum channel is increased, the whole platinum channel is arranged inside a constant temperature and humidity room, the humidity inside the constant temperature and humidity room is increased to be more than 50%, the temperature is increased to be more than 40 ℃, and the purpose is to enable more hydrogen partial pressure to be generated in the constant temperature and humidity room, and a dynamic water decomposition balance is formed outside the pipe wall of the clarification section of the platinum channel:
H2O←→H++OH-←→H2+O2
The method has the advantages that abundant hydrogen is generated, dynamic balance is generated inside and outside the platinum tube, the higher the internal humidity and the temperature between the constant temperature and the constant humidity are, the better the stability is, the higher the generated hydrogen partial pressure is, the hydrogen permeated from the inside of the platinum tube can be counteracted as much as possible, and a large amount of oxygen bubbles generated near the inner wall of the platinum tube can be prevented from affecting the yield and the quality of products.
The countermeasure method has certain locality:
The temperature of the clarification section is increased, the temperature is limited by the melting point and the high-temperature strength of platinum, a certain limit is provided, and the higher the temperature is, the more noble metal volatile matters are brought, and the more stone defects are generated;
The number of the platinum channels in the constant temperature and humidity room is large, the length of the constant temperature and humidity room is more than 15 meters, the width and the height of the constant temperature and humidity room are both between 4 and 5 meters, the circulating air volume of the constant temperature and humidity room reaches 4 to 6 ten thousand cubic meters per hour, and the production cost is high;
because the shape between the constant temperature and the constant humidity is influenced by the platinum channel equipment and the layout, the upper side, the lower side and the two sides of the clarification section cannot be symmetrical, and therefore, the temperature, the humidity, the air quantity and the flow velocity of the two sides, the upper side, the lower side and the lower side of the platinum pipe of the clarification section are also very uneven, the temperature difference can reach more than 50 ℃, the humidity difference is more than 30%, and the clarification effect of the clarification section of the platinum channel is restricted;
The constant temperature and humidity room often needs an operator to work in the room, so that the temperature and the humidity cannot be increased as much as possible to improve the bubble countermeasure effect, the constant temperature and humidity room is used for improving the hydrogen partial pressure in the constant temperature and humidity room, and a better clarification effect cannot be obtained in the same way.
Thus, there is a need for an apparatus and method for improving the fining effect of glass to improve the working effect of the fining section of the platinum channel, thereby improving the glass quality and meeting the market demands.
Disclosure of Invention
The invention aims to solve the technical problems of providing a platinum channel, equipment for improving the glass clarifying effect and a method for manufacturing glass by utilizing the platinum channel and the equipment for improving the glass clarifying effect, wherein the equipment and the method can reduce the temperature and humidity difference of the left and right sides and the upper and lower sides of a platinum channel clarifying section, reduce the influence and restriction of the environment on the platinum channel clarifying section, and improve the hydrogen partial pressure outside the platinum channel clarifying section, thereby improving the capability of the clarifying section for eliminating bubbles, improving the quality of glass products, reducing the running cost of a production line and meeting the market requirements on the glass products.
1. A platinum channel comprises a clarification section (1), a stirring section (2) and a feeding section (3),
Wherein the clarification section (1) comprises: bellows type steel structure (5), first heat preservation material (6), second heat preservation material (7), platinum pipe (8), steam pipeline (9), gas adjusting device (10), temperature detector (T), humidity detector (H), pressure detector (P), and steam source (11),
Wherein, bellows formula steel constructs (5) and supports second heat preservation material (7) in second heat preservation material (7) outside, and second heat preservation material (7) support and keep warm platinum pipe (8), and first heat preservation material (6) are in bellows formula steel constructs (5) outside, keep warm bellows formula steel constructs (5).
2. The platinum channel according to item 1, wherein the bellows type steel structure (5) is a stainless steel cavity having a hole on the inside.
3. The platinum channel according to item 2, wherein the area of the hole provided in the inner surface of the bellows-type steel structure (5) is 50% or more, preferably 60% or more, and more preferably 70% or more of the total area of the inner surface of the entire bellows-type steel structure (5).
4. A platinum channel according to any one of claims 1 to 3, wherein the platinum tube (8) is made of platinum or a platinum alloy.
5. The platinum channel according to any one of claims 2 to 4, wherein the shape of the inner surface hole of the bellows-type steel structure (5) is any one or more selected from the group consisting of a circle, an ellipse, a triangle, a rectangle, and a polygon.
6. The platinum channel according to any one of claims 1 to 5, wherein a steam pipeline (9) is connected with the bellows type steel structure (5) and the steam source (11), and a temperature detector (T), a humidity detector (H) and a pressure detector (P) detect the temperature, the humidity and the pressure of water vapor in the bellows type steel structure (5).
7. The platinum channel according to any one of claims 1 to 6, wherein the number of bellows-type steel structures (5) is 4, which support the second heat insulating material (7) from the periphery.
8. The platinum path according to any one of claims 1 to 7, wherein the number of the gas adjustment device (10), the temperature detector (T), the humidity detector (H), and the pressure detector (P) is 4.
9. An apparatus for enhancing the fining effect of glass comprising:
The platinum channel according to any one of claims 1 to 8, and a constant temperature and humidity chamber (4).
10. The apparatus of claim 9, wherein the constant temperature and humidity compartment (4) is located only outside the stirring section (2) and the feeding section (3).
In the invention, the platinum channel is a place where the glass liquid is clarified, stirred and homogenized after being melted in the kiln. The function of the clarification section is to clarify the molten glass from the kiln and eliminate bubble defects therein. The stirring section utilizes the mechanical stirring effect of the stirring rod to uniformly mix glass liquid materials and reduce glass stripes. The feeding section is connected with the forming area and conveys the glass liquid to the forming area.
The platinum tube is a channel body through which the high-temperature glass solution flows.
The outer side of the platinum pipe is wrapped by a second heat insulation material (7), and the second heat insulation material (7) supports and insulates the platinum pipe.
The bellows type steel structure is a cavity steel structure and is positioned around the second heat insulation material (7) to support the second heat insulation material (7).
In the invention, four sides of the bellows type steel structure (5) are respectively called a bellows type steel structure (5-1), a bellows type steel structure (5-2), a bellows type steel structure (5-3) and a bellows type steel structure (5-4), and the four sides form a cavity steel structure.
The first heat preservation material (6) is positioned around the bellows type steel structure and is used for preserving heat outside the bellows type steel structure, so that water vapor condensation in the bellows type steel structure is avoided.
The steam pipeline is connected with the bellows type steel structure and the steam source and is used for conveying the steam output by the steam source into the bellows type steel structure.
The gas adjusting device is positioned on the steam pipeline and is used for adjusting the pressure and flow of the water vapor.
The temperature detector, the humidity detector and the pressure detector are positioned inside the bellows type steel structure, and detect the temperature, the humidity and the pressure of water vapor inside the bellows type steel structure, so that the temperature, the humidity and the pressure outside the second heat insulation material (7) are stable in environment and meet the process requirements, and the temperature detector, the humidity detector and the pressure detector detect and feed back the temperature, the humidity and the pressure outside the second heat insulation material (7).
The constant temperature and humidity room is a closed space, certain temperature and humidity are guaranteed in the constant temperature and humidity room, and the constant temperature and humidity room is only located on the outer sides of the stirring section and the feeding section.
According to a first aspect of the present invention there is provided a platinum channel comprising: the device comprises a clarification section (1), a stirring section (2), a feeding section (3), bellows type steel structures (5-1), (5-2), (5-3) and (5-4), a first heat preservation material (6), a second heat preservation material (7), a platinum pipe (8), a steam pipeline (9), a gas adjusting device (10-1), (10-2), (10-3) and (10-4), a steam source (11), temperature detectors (T1), (T2), (T3) and (T4), humidity detectors (H1), (H2), (H3) and (H4), and pressure detectors (P1), (P2), (P3) and (P4). The bellows type steel structure (5) supports the second heat insulation material (7), the second heat insulation material (7) supports and insulates the platinum pipe (8), and the first heat insulation material (6) insulates the bellows type steel structure (5) to avoid water vapor condensation therein. Temperature detectors (T1), (T2), (T3), (T4), humidity detectors (H1), (H2), (H3), (H4), and pressure detectors (P1), (P2), (P3), (P4) respectively detect the temperature, humidity and pressure of water vapor inside the 4 bellows-type steel structures. The steam pipeline (9) is connected with the bellows type steel structure (5) and the steam source (11), and the gas adjusting devices (10-1), (10-2), (10-3) and (10-4) are used for adjusting the pressure and flow of the steam.
Preferably, the platinum tube (7) is made of platinum or a platinum alloy.
Preferably, the bellows-type steel structures (5-1), (5-2), (5-3), (5-4) are made of stainless steel, and are a cavity formed by the stainless steel.
More preferably, after the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4) are installed, the first heat preservation material (6) is arranged outside to preserve heat, and the inner surface is provided with holes to be in contact with the refractory material (7).
Preferably, the bellows-type steel structures (5-1), (5-2), (5-3), (5-4) are connected by welding or bolts to form a whole.
More preferably, the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4) have a detachable function.
According to a second aspect of the invention there is provided an apparatus for improving the fining effect of glass comprising a fining section (1) independent of a constant temperature and humidity chamber (4), a platinum tube vapour source (11) delivering vapour into a bellows-type steel structure (5-1), (5-2), (5-3), (5-4) outside a refractory material (7) through a vapour line (9), after which vapour is delivered from the inner side of the bellows-type steel structure (5-1), (5-2), (5-3), (5-4) into the refractory material (7) and the outer side of the platinum tube (8), and gas regulating means (10-1), (10-2), (10-3), (10-4) regulating the vapour pressure and flow rate delivered into the bellows-type steel structure (5-1), (5-2), (5-3), (5-4) such that the temperature, humidity, pressure environment outside the second insulating material (7) is stable, and the temperature detectors (T1), (T2), (T3), (T4), humidity detectors (H2), (P1), (P2) and (P2) are reached to the process requirements, and (P4) detecting and feeding back the temperature, humidity and pressure outside the second heat insulation material (7). The first heat-preserving material (6) preserves the heat of the bellows type steel structures (5-1), (5-2), (5-3) and (5-4) to avoid condensation of water vapor.
Thus, a stable high-temperature and high-humidity environment is formed outside the platinum pipe (8), the hydrogen partial pressure outside the platinum channel clarification section (1) is improved, the capability of eliminating bubbles in the clarification section (1) is improved, the quality of glass products is improved, the constant temperature and humidity room (4) is reduced, the operation capacity is reduced from 4 to 6 ten thousand cubic meters per hour, the operation cost of a production line is reduced, the competitive capacity is improved, and the requirements of the market on the glass products are met.
Preferably, the water vapor used is 120 ℃ dry saturated steam;
Preferably, the internal temperature of the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4) is above 90 ℃;
more preferably, the internal temperature difference of the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4) is within +/-0.5 ℃;
Preferably, the bellows-type steel structure (5-1), (5-2), (5-3), (5-4) has an internal humidity between 70% and 90%;
More preferably, the difference of humidity inside the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4) is within 5%;
preferably, the internal pressure of the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4) is between 5Pa and 10Pa, and the control precision is +/-0.5 Pa;
more preferably, the internal pressure difference of the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4) is within 0.5 Pa;
Preferably, the inner surface holes of the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4) are round, oval, triangular, rectangular and/or polygonal, and the area of all small holes accounts for more than 50%, preferably more than 60%, and more preferably more than 70% of the total area of the inner surfaces of the bellows-type steel structures (5-1), (5-2), (5-3) and (5-4);
In the invention, the outer side of the platinum pipe (8) forms a stable environment with high temperature and high humidity, the temperature and the humidity are far higher than the capability provided by the traditional constant temperature and humidity room (4), and the hydrogen partial pressure outside the platinum channel clarification section (1) is improved, so that the capability of eliminating bubbles of the clarification section (1) is improved, and the quality of glass products is improved.
The constant temperature and humidity room (4) is reduced by half, the operation capacity is reduced from 4 to 6 ten thousand cubic meters per hour to 2 to 3 ten thousand cubic meters per hour, the operation cost of the production line is reduced, and the competitive capacity is improved.
The invention also provides a method for manufacturing glass by utilizing the platinum channel and the equipment for improving the glass clarifying effect.
ADVANTAGEOUS EFFECTS OF INVENTION
By adopting the platinum channel and the equipment and the method for improving the glass clarifying effect, the influence and restriction of the environment on the platinum channel clarifying section are reduced by accurately adjusting the temperature, humidity and pressure environment outside the clarifying section, and the hydrogen partial pressure outside the platinum channel clarifying section is improved, so that the capability of eliminating bubbles of the clarifying section is improved, the quality of glass products is improved, the running cost of a production line is reduced, and the market demand on the glass products is met.
Drawings
FIG. 1 shows a schematic diagram of each functional section of a platinum channel.
Fig. 2 is a schematic diagram of a conventional platinum channel and a constant temperature and humidity chamber.
Fig. 3 is a schematic diagram of a conventional platinum channel clarification section and cross section.
Fig. 4 is a schematic diagram of a platinum channel and constant temperature and humidity chamber of the present invention.
Fig. 5 is a schematic view of a platinum channel of the present invention.
Fig. 6 is a schematic cross-sectional view of a platinum channel of the present invention.
FIG. 7 is an internal schematic view of the bellows steel structure of the present invention.
Detailed Description
An apparatus and method for enhancing the fining of glass according to the present invention is described in further detail below in conjunction with the embodiments described in the figures, wherein like numerals represent like features throughout the figures.
Referring to fig. 1, fig. 1 is a schematic diagram of functional sections of a platinum channel, wherein the entire platinum channel is divided into three sections, a fining section, a stirring section and a feeding section, and the fining section has the function of fining molten glass from a kiln to eliminate bubble defects therein.
Fig. 2 is a schematic diagram of a conventional platinum channel and a constant temperature and humidity chamber 4, wherein the entire platinum channel is contained inside the constant temperature and humidity chamber 4, and the constant temperature and humidity chamber 4 ensures a certain temperature and humidity, so that a large amount of hydrogen partial pressure is generated inside the constant temperature and humidity chamber outside the platinum channel, thereby facilitating the elimination of bubbles. However, due to the influence of factors such as the internal equipment of the constant temperature and humidity room 4 and the operating environment of personnel, the temperature and humidity parameter of the constant temperature and humidity room 4 is limited to be increased, the humidity is generally increased to be more than 50%, and the temperature is generally increased to be more than 40 ℃. And because of the non-uniformity of the layout of the internal equipment, the non-uniformity of the temperature and humidity parameters of the upper and lower, left and right environments of the platinum channel clarification section 1 is caused, so that the non-uniformity of the temperature and power parameters of the platinum channel clarification section 1 is influenced, in order to improve the bubble elimination capability, especially under the condition of higher production capacity, the temperature of the clarification section 1 is increased to be higher than 1640 ℃, a large amount of noble metal volatilization is generated, partial volatile matters enter glass liquid to form defects, and the service life of the platinum channel is shortened.
Fig. 3 is a schematic diagram of a conventional platinum channel clarification section and section, wherein a steel structure 12 supports a second heat insulation material 7, and the second heat insulation material 7 supports and insulates a platinum pipe 8.
Fig. 4 is a schematic view of a platinum channel and a constant temperature and humidity chamber according to the present invention, and fig. 5 and 6 are schematic views of an embodiment of the platinum channel according to the present invention. The equipment for improving the glass clarifying effect comprises a traditional clarifying section 1, a stirring section 2, a feeding section 3 and a constant temperature and humidity chamber 4, wherein the clarifying section 1 is composed of a second heat insulation material 7 and a platinum pipe 8, and further comprises bellows type steel structures 5-1, 5-2, 5-3 and 5-4, a first heat insulation material 6, a steam pipeline 9, gas adjusting devices 10-1, 10-2, 10-3 and 10-4, a steam source 11, temperature detectors T1, T2, T3 and T4, humidity detectors H1, H2, H3 and H4 and pressure detectors P1, P2, P3 and P4. The bellows type steel structure 5 supports the second heat insulation material 7, the second heat insulation material 7 supports and insulates the platinum pipe 8, and the first heat insulation material 6 insulates the outside of the bellows type steel structures 5-1, 5-2, 5-3 and 5-4, so that condensation of water vapor in the bellows type steel structure is avoided. Temperature detectors T1, T2, T3 and T4, humidity detectors H1, H2, H3 and H4 and pressure detectors P1, P2, P3 and P4 respectively detect the temperature, humidity and pressure of water vapor in the 4 bellows type steel structures. The steam pipeline 9 is connected with the bellows type steel structure 5 and the steam source 11, and the gas adjusting devices 10-1, 10-2, 10-3 and 10-4 are used for adjusting the pressure and flow of the steam. In the equipment, the constant temperature and humidity room 4 only covers the stirring section 2 and the feeding section 3, and does not contain the clarification section 1. The device of the invention is obviously different from the traditional device structure.
In the present invention, the inside of the bellows type steel structure is a cavity, the inside of the bellows type steel structure is provided with a hole, the outside of the bellows type steel structure is provided with a stainless steel plate, in a conventional platinum channel, as shown in fig. 3, the outside of the second heat insulation material 7 is directly supported by the steel structure 12, and as shown in fig. 5, the bellows type steel structures 5-1 and 5-2 at the outside are of a cavity structure. The first heat-insulating material 6 outside 5-1 and 5-2 performs heat insulation on the outside of the bellows type steel structure. It can also be seen from the constant section schematic of fig. 6 that the bellows-type steel structure is composed of 5-1, 5-2, 5-3, 5-4 as a whole, which inner side has holes, also called inner face holes, which will be described in further detail below.
According to the invention, the clarification section 1 is independently arranged outside the constant temperature and humidity room 4, the platinum pipe steam source 11 conveys steam into bellows type steel structures 5-1, 5-2, 5-3 and 5-4 outside the refractory material 7 through the steam pipeline 9, small holes on the inner surfaces of the bellows type steel structures 5-1, 5-2, 5-3 and 5-4 diffuse into the refractory material 7 and the outside of the platinum pipe 8, and meanwhile, the gas adjusting devices 10-1, 10-2, 10-3 and 10-4 adjust the pressure and flow of the steam conveyed into the bellows type steel structures 5-1, 5-2, 5-3 and 5-4, so that the temperature, the humidity and the pressure environment outside the second heat insulation material 7 are stable, the temperature is more than 90 ℃, the humidity is more than 70 percent, the precision is within +/-5 percent, the pressure is between 5Pa and the precision is +/-0.5 Pa. And temperature detectors T1, T2, T3, T4, humidity detectors H1, H2, H3, H4, and pressure detectors P1, P2, P3, P4 detect and feed back the temperature, humidity, pressure outside the second thermal insulation material 7. The first heat preservation material 6 is used for preserving heat of the bellows type steel structures 5-1, 5-2, 5-3 and 5-4, and water vapor condensation is avoided.
Fig. 7 is a schematic view of the inner surfaces of bellows-type steel structures 5-1, 5-2, 5-3, 5-4, and it can be seen from the figure that the inner surface holes are circular in shape, and water vapor is delivered to the periphery of the platinum pipe 8 through the holes.
Thus, a stable high-temperature and high-humidity environment is formed on the outer side of the platinum pipe 8, the hydrogen partial pressure outside the platinum channel clarification section 1 is improved, the capability of eliminating bubbles in the clarification section 1 is improved, and the running temperature of the clarification section 1 is also reduced due to stable parameters on the outer side of the platinum pipe 8, the volatilization of noble metal and glass defects are reduced, and the quality of glass products is improved. The constant temperature and humidity room 4 is reduced, the operation capacity is reduced from 4 to 6 ten thousand cubic meters per hour to 2 to 3 ten thousand cubic meters per hour, the operation cost of a production line is reduced, the competitive capacity is improved, and the requirements of the market on glass products are met.
Examples:
The following are 2 examples of the present invention.
Experimental example 1
The glass fining effect was improved as shown in fig. 4, and the cross section of the platinum channel therein was as shown in fig. 6. The flow rate of the glass liquid is 8 tons/day, holes on the inner surfaces of the bellows-type steel structures 5-1, 5-2, 5-3 and 5-4 are round, the area of the holes accounts for 75% of the inner surface, and the used steam is 120 ℃ dry saturated steam. The bellows type steel structures 5-1, 5-2, 5-3 and 5-4 are stable in temperature, humidity and pressure environments, the temperature reaches 95 ℃, the humidity reaches 90% within +/-0.5 ℃, the precision is within +/-5%, the pressure is 7Pa, the precision is +/-0.5 Pa, and the operating temperature of the clarification section 1 is 1620 ℃. The constant temperature and humidity room 4 was reduced and the operating capacity was 2.3 ten thousand cubic meters per hour. The bubble defect rate of the glass product is reduced to below 0.2%. The stability of the peripheral temperature, humidity and pressure environment of the clarification section 1 is improved, the bubble reject ratio of glass products is reduced, the operation cost of a production line is reduced, the competitive capacity is improved, and the requirements of the market on the glass products are met.
Experimental example 2
The glass fining effect was improved as shown in fig. 4, and the cross section of the platinum channel therein was as shown in fig. 6. The flow rate of the glass liquid is 12 tons/day, holes on the inner surfaces of the bellows-type steel structures 5-1, 5-2, 5-3 and 5-4 are round, the area of the holes accounts for 85% of the inner surface, and the used steam is 120 ℃ dry saturated steam. The bellows type steel structures 5-1, 5-2, 5-3 and 5-4 are stable in temperature, humidity and pressure environments, the temperature reaches 100 ℃, the humidity reaches 90% within +/-0.5 ℃, the precision is within +/-5%, the pressure is 7Pa, the precision is +/-0.5 Pa, and the operating temperature of the clarification section 1 is 1620 ℃. The constant temperature and humidity room 4 was reduced and the operating capacity was 2.6 ten thousand cubic meters per hour. The bubble defect rate of the glass product is reduced to below 0.2%. The stability of the peripheral temperature, humidity and pressure environment of the clarification section 1 is improved, the bubble reject ratio of glass products is reduced, the operation cost of a production line is reduced, the competitive capacity is improved, and the requirements of the market on the glass products are met. And the operating temperature of the clarification section 1 is not improved while the productivity is improved, the same operating efficiency is achieved, and the defective rate of glass products generated by volatilization of noble metals is reduced.
While certain embodiments of the present invention have been described and illustrated, it is to be understood that the embodiments of the present invention are intended to further illustrate and not to limit the invention, and that certain modifications may be made thereto without departing from the spirit and intent of the invention and the scope of the appended claims.
Claims (9)
1. A platinum channel comprises a clarification section (1), a stirring section (2) and a feeding section (3),
Wherein the clarification section (1) comprises: bellows type steel structure (5), first heat preservation material (6), second heat preservation material (7), platinum pipe (8), steam pipeline (9), gas adjusting device (10), temperature detector (T), humidity detector (H), pressure detector (P), and steam source (11),
Wherein the bellows type steel structure (5) supports the second heat insulation material (7) at the outer side of the second heat insulation material (7), the second heat insulation material (7) supports and insulates the platinum pipe (8), the bellows type steel structure (5) is a stainless steel cavity with holes at the inner side,
The steam pipeline (9) is connected with the bellows type steel structure (5) and the steam source (11), the temperature detector (T), the humidity detector (H) and the pressure detector (P) detect the temperature, the humidity and the pressure of the steam in the bellows type steel structure (5),
The number of the bellows type steel structures (5) is 4, the second heat insulation materials (7) are supported from the periphery,
The first heat preservation material (6) is arranged outside the bellows type steel structure (5) and used for preserving heat of the bellows type steel structure (5), and the internal temperature of the bellows type steel structure (5) is higher than 90 ℃.
2. The platinum channel according to claim 1, wherein the area of the holes in the inner surface of the bellows-type steel structure (5) accounts for more than 50% of the total area of the inner surface of the whole bellows-type steel structure (5).
3. The platinum channel according to claim 1, wherein the area of the holes in the inner surface of the bellows-type steel structure (5) accounts for more than 60% of the total area of the inner surface of the whole bellows-type steel structure (5).
4. The platinum channel according to claim 1, wherein the area of the holes in the inner surface of the bellows-type steel structure (5) accounts for more than 70% of the total area of the inner surface of the whole bellows-type steel structure (5).
5. A platinum channel according to any one of claims 1 to 4, wherein the platinum tube (8) is made of platinum or a platinum alloy.
6. The platinum channel according to any one of claims 1 to 4, wherein the shape of the inner surface hole of the bellows-type steel structure (5) is any one or more selected from the group consisting of a circle, an ellipse, a triangle, a rectangle, and a polygon.
7. The platinum channel according to any one of claims 1 to 4, wherein the number of gas adjusting devices (10), temperature detectors (T), humidity detectors (H), pressure detectors (P) is 4.
8. An apparatus for enhancing the fining effect of glass comprising:
A platinum channel as claimed in any one of claims 1 to 7, and a constant temperature and humidity chamber (4).
9. The apparatus according to claim 8, wherein the constant temperature and humidity compartment (4) is located only outside the stirring section (2) and the feeding section (3).
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| JP7266044B2 (en) * | 2018-04-20 | 2023-04-27 | コーニング インコーポレイテッド | Apparatus and method for controlling an oxygen-containing atmosphere in a glass manufacturing process |
| CN114014517B (en) * | 2021-12-01 | 2023-09-15 | 河北光兴半导体技术有限公司 | Method for adjusting glass production environment |
| CN115124219B (en) * | 2022-07-19 | 2023-10-20 | 河北光兴半导体技术有限公司 | Method for eliminating glass defects |
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| CN101189191A (en) * | 2005-04-27 | 2008-05-28 | 康宁股份有限公司 | Method of fining glass |
| CN202785956U (en) * | 2012-07-30 | 2013-03-13 | 彩虹显示器件股份有限公司 | Humidifier used during delivering of molten glass |
| CN207944013U (en) * | 2018-02-05 | 2018-10-09 | 东旭集团有限公司 | A kind of platinum channel and the equipment for improving glass clarifying effect |
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| US5824127A (en) * | 1996-07-19 | 1998-10-20 | Corning Incorporated | Arsenic-free glasses |
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| CN202785957U (en) * | 2012-08-15 | 2013-03-13 | 陕西彩虹电子玻璃有限公司 | Device for eliminating air bubbles in glass substrate |
| WO2014083923A1 (en) * | 2012-11-29 | 2014-06-05 | ＡｖａｎＳｔｒａｔｅ株式会社 | Method for manufacturing glass substrate |
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| CN101189191A (en) * | 2005-04-27 | 2008-05-28 | 康宁股份有限公司 | Method of fining glass |
| CN202785956U (en) * | 2012-07-30 | 2013-03-13 | 彩虹显示器件股份有限公司 | Humidifier used during delivering of molten glass |
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