JP2021172580A - Apparatus for melting and refining glass and method for manufacturing such apparatus - Google Patents

Abstract

To provide an apparatus for melting and refining glass.SOLUTION: An apparatus having at least a set height and a set width includes: a tank for manufacturing a glass melt; and a refining wall substantially extended in the lateral direction of the tank, having a height smaller than the height of the tank, including a dam having two walls for forming a gap, forming the overflow edge part of the glass melt and arranged in the gap. A protection fluid supply device arranged to be connected to the gap by a fluid is formed so as to supply a protection fluid for protecting the dam into the gap at an excessive pressure compared with the periphery of the tank at least during the operation process of the apparatus.SELECTED DRAWING: Figure 3

Description

The present invention is an apparatus for melting and refining glass.
A tank for producing glass melts, with at least a set height and a set width,
It is a refining wall that extends substantially laterally in the tank and whose height is smaller than the height of the tank, and has two walls forming a gap, in which glass is formed. The present invention relates to an apparatus for melting and refining glass, which has a refining wall and is provided with a weir forming an overflow edge of the melt.

The present invention is further a method of manufacturing an apparatus for melting and refining glass.
-The step of preparing a tank for producing glass melts with at least a set height and a set width, and-substantially extending laterally of the tank, the height of which is the height of the tank. It is a refined wall that is smaller than the height, and has two walls that form a gap, and a dam that forms an overflow edge of the glass melt is arranged in the gap. The present invention relates to a method of manufacturing an apparatus for melting and refining glass, which comprises a step of preparing the glass.

Although the present invention is applicable to any material for refined walls in general, the present invention will be described with respect to purified walls containing molybdenum.

Although the present invention is applicable to any glass in general, the present invention will be described with respect to soda-lime glass.

-For example, from German Patent Invention No. 10236521-As is known, a refined wall with a weir made of molybdenum was used for the production of glass, and the weir was formed by support fences on both sides. It is located in the gap. In this case, the weir, or more precisely the molybdenum of the weir, needs to be protected against oxidation during operation. For this purpose, water glass is applied to a plurality of regions of molybdenum, and a soda-lime glass plate is attached to the corresponding regions of the weir via the water glass. In this case, the gap between the weir and the support fence is generally filled with a compactor-mainly containing zirconium silicate and glass borosilicate-in a particularly laborious manner. During the tempering process during glass production, the water glass and soda-lime glass soften at a temperature below about 550 ° C, that is, below the initiation of molybdenum oxidation by residual oxygen present in the apparatus. The softened glass protects the molybdenum in the weir against oxidation during the subsequent temperature rise process. During this period, the compactor prevents the glass plate from descending / sliding down the weir, due to its still plastic properties. Sintering of the compactor begins at a temperature of about 1100 ° C. The sintering process continues during the subsequent temperature rise process, resulting in hardening and compression of the compactor. In this case, compression also causes a decrease in porosity in the compaction material, which results in airtight encapsulation of molybdenum in the weir.

When an apparatus for producing another glass such as soda lime glass or borosilicate glass is started, in other words, an apparatus containing another glass such as soda lime glass or borosilicate glass as a first glass or a start glass is activated. If so, an undesired reaction between the antioxidant compactor and the product glass, here soda lime glass, will occur. These reactions last for several months, where inclusions and bubbles are formed in the product glass in the form of soda-lime glass.

Therefore, an object of the present invention is to provide an apparatus for melting and refining glass, which can guarantee a variable and free choice of the starting glass of the apparatus. Another object of the present invention is to provide a simple and inexpensive device for melting and purifying glass and a simple and inexpensive manufacturing means for the device.

Yet another object of the present invention is to provide an alternative device for melting and purifying glass as well as an alternative method for manufacturing an device for melting and purifying glass.

In one embodiment, the present invention solves at least one of the above-mentioned problems.
A device that melts and refines glass
A tank for producing glass melts, with at least a set height and a set width,
It is a refining wall that extends substantially laterally in the tank and whose height is smaller than the height of the tank, and has two walls forming a gap, in which glass is formed. In a device for melting and refining glass, having a refining wall, where a weir forming the overflow edge of the melt is located.
A protective fluid supply device that is fluidly connected to the gap is arranged, and the protective fluid device puts the protective fluid that protects the weir into the gap with excessive pressure compared to the surroundings of the tank, at least during the operation process of the device. It is solved by being formed to supply to.

In one alternative embodiment, the invention presents at least one of the tasks described above.
A method of manufacturing equipment that melts and refines glass.
-Steps to prepare a tank for producing glass melts, with at least a set height and a set width,
-A refinery wall that extends substantially laterally in the tank and whose height is smaller than the height of the tank, and has two walls that form a gap, within the gap. In a method of manufacturing a device for melting and refining glass, having a step of preparing a refining wall, where a weir forming an overflow edge of the glass melt is arranged.
By preparing a protective fluid supply device that is fluid connected to the gap and is formed to supply the protective fluid that protects the weir into the gap with excessive pressure compared to the perimeter of the tank, at least during the operation of the device. solve.

One of the benefits of this is that it eliminates all coating, pasting and compacting materials, which allows for easy and inexpensive production of a variety of glasses. .. In addition, there is no significant waiting time of several months before the device can produce another type of glass after the first start glass without inclusions and bubbles.

The "operation", "operation process", or "operation process" is particularly broadly understood herein, preferably in each claim, and relates to the process of initial operation of the device for making glass. The glass to be manufactured during the first run is called a start glass or a first glass, especially with respect to the type of glass at the time, such as soda-lime glass, borosilicate glass and the like.

Hereinafter, another feature, advantage and another embodiment of the present invention will be disclosed by description or description.

In one advantageous improvement, one or more covers are placed on the purification wall, the covers have a configurable number of gaps and / or between at least two adjacent covers. , A gap is formed. The advantage in this regard is the storage of the weir as close as possible to the remaining space of the device, eg the furnace chamber, which greatly improves the protection of the weir against oxidation.

In one other advantageous improvement, a protective fluid in the form of a gas is supplied. This enables easy and inexpensive handling of inexpensive protective fluids and protective fluids.

In one other advantageous improvement, the gas is in the form of an inert gas, preferably nitrogen and / or noble gas, and / or in the form of a forming gas, preferably from 0 to 20% by volume, particularly 0. It is supplied containing 5 to 10% by volume of hydrogen. The advantage in this regard is that it provides sufficient protection of the weir against oxidation without interfering with the manufacturing process of each glass.

In one other advantageous improvement, at least one pressure sensor is provided and at least one pressure measuring device is arranged and / or is formed to measure the pressure of the protective fluid in the gap. A temperature measuring device having at least one temperature sensor and formed to measure the temperature of the dam in the gap is arranged. One of the advantages of this is the effective management of the protective fluid and thus the antioxidant of the weir. In other words, the certainty of glass production is improved.

One other advantageous improvement was formed to control the inflow of protective fluid to a presettable value based on the pressure measured by the pressure measuring device and / or the temperature measured by the temperature measuring device. The control device is arranged. Not only the advantage of continuous monitoring, but also the advantage of continuous adaptation to changing parameters of the operating process, which, as a whole, greatly improves the certainty of the glass manufacturing process.

In one other advantageous improvement, the protective fluid feeder supplies the protective fluid to the gap, which is laterally located perpendicular to the purification wall and / or underneath the purification wall and conjunction with the gap. Has multiple feeders. This makes it possible to efficiently supply the protective fluid so as to cover the surface of the weir.

In one other advantageous improvement, the feeder is formed so that the feeder supplies the protective fluid to the two sides of the weir. The advantage in this regard is the more efficient supply of protective fluid to the weir and thus the prevention of oxidation of the weir.

In one other advantageous improvement, each supply device is symmetrically arranged in the extension of the weir. The advantages are the efficient supply of protective fluid to the weir and the ease of approaching the supply equipment, for example for maintenance purposes.

In one other advantageous improvement, each supply device is located on a different side of the weir in the extension of the weir, supplying a protective fluid to the two sides of the weir via at least one distributor. can do. One of the advantages of this is that it allows for a more compact configuration or more flexible arrangement of the feeder.

In one other advantageous improvement, each supply device is alternately arranged on different sides along the weir. This allows a particularly compact configuration form to be achieved or the spacing between two feeders on the same side of the weir to be used more flexibly. This is because, in this case, this interval is larger than if all the feeders were placed on the same side.

In one other advantageous improvement, the weir has a substantially T-shaped cross section on its upper edge, with a horizontal and vertical section, and at the transition between the two sections, At least one inclined surface is arranged between the two portions to provide an angle greater than 90 degrees. The advantage in this is that the resulting air bubbles rising along the vertical part of the weir are led upwards, which increases the certainty of the manufacturing process and improves the antioxidation of the weir. do.

In one other advantageous improvement, the weir is at least partially made of refractory metals, especially molybdenum, tungsten and the like. The advantage in this regard is that reliable production of glass is possible based on the characteristics such as the high melting point of the refractory metal.

Another feature and advantage of the present invention is apparent from the description of the drawings based on the sub-claims, drawings and accompanying drawings.

It is self-evident that the features described further below can be used not only in each of the combinations described above, but also in other combinations or alone, without departing from the framework of the present invention. ..

Suitable configurations and embodiments of the present invention are illustrated and will be described in more detail below. The same reference numerals relate to the same or similar or functionally the same components or elements.

It is a 3D figure which shows the apparatus by one Embodiment of this invention in a schematic form. It is a cross-sectional view which shows the purification wall in the direction parallel to the width of a tank in a schematic shape. It is a front view which shows the purification wall provided with the supply device by one Embodiment of this invention in a schematic form. It is a 3D figure which shows the distribution device by one Embodiment of this invention in a schematic form. It is a three-dimensional view which shows the purification wall of the region of the bottom part of the tank by one Embodiment of this invention in a schematic form. It is a figure which shows the step of the method by one Embodiment of this invention in a schematic form.

FIG. 1 shows a three-dimensional view of the device according to one embodiment of the present invention.

In detail, FIG. 1 shows an apparatus 1 for melting and refining glass, having a height of 300 and a width of 301, here with a substantially rectangular tank 3. A purification wall 2 extends inside the tank 3 along the width 301, that is, along the lateral direction 100 of the tank 3, and the height 200 of the purification wall 2 is higher than the height 300 of the tank 3. It's getting smaller. The refined wall 2 has two walls 4a and 4b, and a gap 5 is formed between the walls 4a and 4b. In the gap 5, a weir 6 that forms an overflow edge of the glass melt to be received in the tank is arranged (see FIG. 2). On the upper side of the purification wall 2, a plurality of covers 8 for covering the purification wall 2 upward are arranged. As a whole, three gaps 9 are formed between each cover 8. The gap 9 or gap helps to cover the weir with glass upon complete melting, and the cover 8 helps control the excess pressure of the inert or forming gas in the weir 6. In this case, the excess pressure may be, for example, 100 microbars relative to the atmospheric pressure, and the gap width may be, for example, 1 mm to 20 mm, for example 10 mm.

FIG. 2 shows a schematic cross section of the purification wall as viewed in a direction parallel to the width of the tank.

In detail, FIG. 2 shows the upper region of the purification wall 2. -As already mentioned above-On the side, the refined wall is defined on the left and right by side walls 4a and 4b. A gap 5 is formed between the two walls 4a and 4b and the upper cover 8, and a substantially T-shaped weir 6 made of molybdenum is arranged in the gap 5. The weir 6 has a horizontal portion 6a, a horizontal portion 6b and a vertical portion 6c based on a T-shape in its upper region. In this case, the transition region between the two portions 6b, 6c is not formed at a right angle, but has an inclined surface 6d, and the inclined surface 6d collects bubbles that may occur in the horizontal portion 6b. It is desirable to prevent it. The inclined surface 6d leads out bubbles that rise upward.

FIG. 3 schematically shows a front view of a purification wall provided with a supply device according to one embodiment of the present invention.

In detail, FIG. 3 shows a vertical cross section of the refined wall shown in FIG. A plurality of supply devices 11 are arranged vertically and vertically on the left and right sides of the purification wall 2, and these supply devices 11 supply inert gas or forming gas to both sides of the weir 6 of the purification wall 2. be able to. Similarly, a plurality of supply devices 11 are arranged side by side on the lower side of the purification wall 2, and these supply devices 11 can supply the inert gas or the forming gas to both sides of the weir 6. Further, a pressure sensor 12'of the pressure measuring device 12 and a temperature sensor 13'of the temperature measuring device 13 are arranged so that the pressure and temperature in the gap 5 can be inspected by measuring, and in some cases, the operator. It is possible to show. The pressure measuring device 12 and the temperature measuring device 13 are connected to a control device 10 that controls the supply of the protective fluid to the weir 6 according to the measured values.

FIG. 4 shows a three-dimensional diagram of the distribution device according to one embodiment of the present invention in a schematic form.

In detail, FIG. 4 shows the distribution device 14. The distribution device 14 has a passage or a pipeline 20, and the passage or the pipeline 20 is connected to a protective fluid supply device capable of supplying the protective fluid to the passage or the pipeline 20. Further, the distribution device 14 has two outflow portions 21 and 22, and the mutual distance between the outflow portions 21 and 22 is such that the outflow portions 21 and 22 particularly uniformly spread the protective fluid on each opposite side of the weir 6. It is set to be able to supply. The outflow portions 21 and 22 are formed in the upper region as recesses provided on the surface of an otherwise flat surface extending along each edge of the weir 6.

FIG. 5 schematically shows a three-dimensional view of the purification wall in the region of the bottom of the tank according to one embodiment of the present invention.

In detail, FIG. 5 shows the configuration of the apparatus 1 in the region of the purification wall 2 in the region of the bottom of the tank 3. The protective fluid is supplied to each distribution device 14 via the supply device 11 in the form of a nozzle. The distribution device 14 also distributes the protective fluid to both sides of the weir 6 as uniformly as possible to protect the weir 6, that is, to prevent oxidation of the weir 6. Therefore, for example, 2 to 5 nozzles per meter may be arranged in the horizontal direction, particularly 3 to 4 nozzles, and 3 to 7 nozzles per meter, particularly 4 to 5 nozzles may be arranged in the vertical direction. good. The cross section of the nozzle is preferably formed in a circular shape, but may be formed in a square shape, for example, a square or a rectangular shape depending on the situation. As the protective fluid, a gas supplied into the gap 5 by the protective fluid supply device at a rate of 5 l / min to 50 l / min can be used. This amount is appropriately adapted to the given measurements of the pressure measuring device 12 and / or the temperature measuring device 13 in order to generate the desired excess pressure in the gap.

FIG. 6 shows the steps of the method according to one embodiment of the present invention.

In detail, FIG. 6 shows the steps of a method of manufacturing an apparatus for melting and refining glass.

In this case, the method includes the following steps.

In the first step S1, a tank for producing the glass melt with at least a set height and a set width is prepared.

In another step S2, the purification wall substantially extends laterally to the tank, the height of which is smaller than the height of the tank, and has two walls forming a gap, in which the gap is formed. The refining wall is prepared, where the weir forming the overflow edge of the glass melt is placed, at which time the protective fluid that protects the weir is placed in the gap with excessive pressure compared to the perimeter of the tank. Prepare a protective fluid supply device that is fluid-connected to the gap and is formed to supply to.

In summary, at least one of the embodiments of the present invention has the following advantages:
-Easy and inexpensive implementation-Easy and inexpensive production-Reliable protection of weirs against oxidation-Easy and reliable production of glass-Flexible production of different glass with a single device-Fast and inexpensive production of different glass Allows at least one of them.

Although the present invention has been described based on preferred examples, the present invention is not limited thereto and can be modified in various ways.

1 Equipment 2 Purification wall 3 Tank 4a, 4b Wall 5 Gap 6 Dam 6a Upper edge of dam 6b Horizontal part of dam 6c Vertical part of dam 6d Inclined surface 7 Protective fluid supply device 8 Cover 9 Gap 10 Control device 11 Supply device 12 Pressure Measuring device 12'Pressure sensor 13 Temperature measuring device 13'Temperature sensor 14 Distributing device 20 Passage / pipeline 21,22 Outflow part 100 Horizontal direction 101 Extension part 200 Purification wall height 300 Tank height 301 Tank width 400 Horizontal area under the purification wall 401 Area extending perpendicular to the purification wall on the side

Claims (14)

An apparatus (1) for melting and refining glass, wherein the apparatus (1) is
A tank (3) for producing a glass melt with at least a set height (300) and a set width (301), and
At the purification wall (2), which substantially extends in the lateral direction (100) of the tank (3) and whose height (200) is smaller than the height (300) of the tank (3). It has two walls (4a, 4b) forming a gap (5), and a weir (6) forming an overflow edge of the glass melt is arranged in the gap (5). Purification wall (2)
Have,
A protective fluid supply device (7) fluidly connected to the gap (5) is arranged, and the protective fluid supply device (7) is connected to the weir (6) at least during the operation process of the device (1). The protective fluid is formed so as to supply the protective fluid into the gap with an excessive pressure as compared with the periphery of the tank (3).
Device (1). One or more covers (8) are arranged on the purification wall (2), the covers (8) having a configurable number of gaps (9) and / or at least adjacent at least. A gap (9) is formed between the two covers (8).
The device according to claim 1. The protective fluid is supplied in the form of a gas,
The device according to claim 1 or 2. The gas is in the form of an inert gas, preferably nitrogen and / or a noble gas and / or a forming gas, preferably in the form of 0-20% by volume, particularly 0.5-10% by volume of hydrogen. Included and supplied,
The device according to claim 3. At least one pressure measuring device (12) having at least one pressure sensor (12'), the pressure measuring device (12) formed to measure the pressure of the protective fluid in the gap is arranged. And / or
A temperature measuring device (13) having at least one temperature sensor (13'), wherein the temperature measuring device (13) formed so as to measure the temperature of the weir (6) in the gap (5). Being placed,
The device according to any one of claims 1 to 4. It is formed so as to control the inflow amount of the protective fluid to a presettable value based on the pressure measured by the pressure measuring device (12) and / or the temperature measured by the temperature measuring device (13). The control device (10) is arranged,
The device according to any one of claims 1 to 5. The protective fluid supply device (7) is laterally arranged perpendicular to the purification wall (2) (401) and / or is arranged below the purification wall (2) (400) and the gap (5). ), And has a plurality of supply devices (11) for supplying the protective fluid to the gap (5).
The device according to any one of claims 1 to 6. The supply device (11) is formed so that the supply device (11) supplies the protective fluid to the two sides of the weir (6).
The device according to any one of claims 1 to 6. The supply device (11) is symmetrically arranged on the extending portion (100, 101) of the weir (6).
The device according to claim 8. The supply device (11) is arranged on different sides of the weir (6) in the extending portion (100, 101) of the weir (6) in one direction (100, 101), and at least one. The protective fluid can be supplied to the two sides of the weir (6) via the distributor (14).
The device according to claim 8. The supply devices (11) are alternately arranged on different sides along the weir (6).
The device according to claim 8 or 10. The weir (6) has a substantially T-shaped cross section at its upper edge (6a) with a horizontal portion (6b) and a vertical portion (6c), and the two said portions (6b). , 6c), there is at least one inclined surface (6d) between the two said portions (6b, 6c) that provides an angle greater than 90 degrees.
The device according to any one of claims 1 to 11. The weir (6) is at least partially manufactured from refractory metals such as molybdenum and tungsten.
The device according to any one of claims 1 to 12. A method for manufacturing an apparatus (1) for melting and refining glass, wherein the method is
-In the step (S1) of preparing a tank (3) for producing a glass melt having at least a set height (300) and a set width (301),
-A purification wall (2) that substantially extends laterally (100) of the tank (3) and whose height (200) is smaller than the height (300) of the tank (3). It has two walls (4a; 4b) forming a gap (5), and a weir (6) forming an overflow edge of the glass melt is formed in the gap (5). The step (S2) of preparing the arranged purification wall (2) and
Have,
A protective fluid that is fluid-connected to the gap (5) and protects the weir (6) at least during the operation process of the device (1) is introduced into the gap with an excessive pressure as compared with the periphery of the tank (3). Prepare a protective fluid supply device (7) formed to supply,
Method.

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