CN113860705B - Electrode layout combination system of large-tonnage glass electric melting furnace - Google Patents
Electrode layout combination system of large-tonnage glass electric melting furnace Download PDFInfo
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- CN113860705B CN113860705B CN202111295220.8A CN202111295220A CN113860705B CN 113860705 B CN113860705 B CN 113860705B CN 202111295220 A CN202111295220 A CN 202111295220A CN 113860705 B CN113860705 B CN 113860705B
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- 238000002844 melting Methods 0.000 title claims abstract description 116
- 230000008018 melting Effects 0.000 title claims abstract description 116
- 239000011521 glass Substances 0.000 title claims abstract description 64
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000005352 clarification Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 27
- 239000006060 molten glass Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
-
- 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
-
- 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
- C03B5/18—Stirring devices; Homogenisation
- C03B5/183—Stirring devices; Homogenisation using thermal means, e.g. for creating convection currents
- C03B5/185—Electric means
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
The invention discloses a large-tonnage glass electric melting furnace electrode layout combination system, which comprises a melting tank, a T-shaped structure, a first top-inserted electrode, a second top-inserted electrode and a bottom-inserted electrode, wherein the T-shaped structure is arranged in the middle of the melting tank, the T-shaped structure divides the melting tank into a melting area and a cooling clarifying area which are mutually communicated, the first top-inserted electrode and the second top-inserted electrode are distributed in the melting area above the melting tank at intervals of a certain angle along the circumferential direction, the first top-inserted electrode and the second top-inserted electrode form a certain included angle with the top surface of the melting tank, the length of the first top-inserted electrode is greater than that of the second top-inserted electrode, a plurality of bottom-inserted electrodes are uniformly distributed in the cooling clarifying area at the bottom of the melting tank along the circumferential direction, and the first top-inserted electrode, the second top-inserted electrode and the bottom-inserted electrode are respectively electrically connected with an electric control system. The invention effectively solves the problems of insufficient glass liquid melting, more stones, bubbles and the like of the glass electric melting furnace with the daily discharge amount of more than 60 tons.
Description
Technical Field
The invention relates to the technical field of glass electric melting furnaces, in particular to a large-tonnage glass electric melting furnace electrode layout combination system.
Background
At present, since the glass electric melting furnace was introduced into China in the last 80 th century, along with the combination and promotion of theoretical research of technological workers and practical experience of production practitioners, the glass electric melting furnace has the body and shadow of the electric melting furnace in the fields of industrial glass, electronic glass, daily glass and the like nowadays due to the use of clean energy, and the market share of the glass electric melting furnace is gradually expanding. However, the single kiln has a small daily discharge amount, which hinders the development of the single kiln.
At present, the domestic glass electric melting furnace capable of producing about 60 tons of glass liquid in daily life can produce glass liquid with relatively good quality. However, when the daily glass liquid is more than 60 tons, the quality of the glass liquid is difficult to ensure, and the defects of bubbles, stones and the like appear. The reason is that when daily molten glass is increased, the area of a melting pool of the kiln is also increased, the traditional electrode layout is difficult to ensure that molten glass in each area of the melting pool is sufficiently melted, so that the molten glass in a part of the melting area of the melting pool is not sufficiently melted and enters a cooling and clarifying area and a forming area, and glass defects are generated. Therefore, new electrode layout is needed to solve the problem, and the development of the glass electric melting furnace is promoted to the direction of larger daily molten glass tonnage.
Disclosure of Invention
The invention aims to provide a large-tonnage glass electric melting furnace electrode layout combination system, which solves the problems that molten glass in a melting tank of a large-tonnage glass electric melting furnace cannot be sufficiently melted due to the problems of electrode distribution and melting tank structure, and bubbles, stones and the like appear.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses an electrode layout combination system of a large-tonnage glass electric melting furnace, which comprises a melting tank, a T-shaped structure, a first top-inserted electrode, a second top-inserted electrode and a bottom-inserted electrode, wherein the T-shaped structure is arranged in the middle of the melting tank, the T-shaped structure divides the melting tank into a melting area and a cooling clarifying area which are mutually communicated, the first top-inserted electrode and the second top-inserted electrode are distributed in the melting area above the melting tank at intervals at certain angles along the circumferential direction, the first top-inserted electrode and the second top-inserted electrode form certain included angles with the top surface of the melting tank, the length of the first top-inserted electrode is larger than that of the second top-inserted electrode, a plurality of bottom-inserted electrodes are uniformly distributed in the cooling clarifying area at the bottom of the melting tank along the circumferential direction, and the first top-inserted electrode, the second top-inserted electrode and the bottom-inserted electrode are respectively electrically connected with an electric control system.
Further, the included angle between the first top inserting electrode and the second top inserting electrode and the vertical plane of the melting tank is 8 degrees.
Further, the first top-inserted electrode is 250mm-300mm longer than the second top-inserted electrode.
Further, two first top-inserted electrodes are in one group, six groups are arranged in total, the six groups of the first top-inserted electrodes are distributed in a regular polygon, and the included angle between two adjacent groups of the first top-inserted electrodes is 60 degrees; six second top-inserted electrodes are equidistantly distributed to form a circle identical to the center of the polygon, and the included angle between two adjacent second top-inserted electrodes is 60 degrees; the included angle between the central line of each group of first top-inserted electrodes and the adjacent second top-inserted electrodes is 30 degrees.
Further, six bottom inserting electrodes are circumferentially and uniformly distributed at the bottom of the melting tank, and the included angle between two adjacent bottom inserting electrodes is 60 degrees; the circle center formed by the bottom inserting electrode and the circle center formed by the second top inserting electrode are the same circle center, the radius of the circle formed by the bottom inserting electrode is smaller than that of the circle formed by the second top inserting electrode, and the included angle between any bottom inserting electrode and the adjacent second top inserting electrode is 30 degrees.
Further, the distance between two electrodes of each group of the first top inserted electrodes is 8-11 times of the diameter of the electrode body.
Further, the distance between the first top-inserted electrode and the second top-inserted electrode and the pool wall of the melting pool is 5-8 times of the diameter of the electrode body.
Further, the diameter of the electrode body is designed according to the current density born by the surface area of the electrode to be less than or equal to 1.2A/cm < 2 >.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention effectively solves the problems of insufficient glass liquid melting, more stones and bubbles and the like of the glass electric melting furnace with the daily discharge amount of more than 60 tons, provides a solution for electrode layout for expanding the domestic glass electric melting furnace to larger tonnage, and promotes the development of the glass electric melting furnace to the direction of larger tonnage daily output glass liquid.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a front view of an electrode layout assembly system for a large tonnage glass electric melting furnace according to the present invention;
FIG. 2 is a top view of the electrode layout assembly system of the large tonnage glass electric melting furnace of the present invention;
reference numerals illustrate: 1. a melting tank; 2. a T-shaped structure; 3. a first top plug electrode; 4. a second top plug electrode; 5. and a bottom plug electrode.
Detailed Description
As shown in fig. 1, the electrode layout combination system of the large-tonnage glass electric melting furnace comprises a melting tank 1, a T-shaped structure 2, a first top-inserted electrode 3, a second top-inserted electrode 4 and a bottom-inserted electrode 5, wherein the T-shaped structure 2 is arranged in the middle of the melting tank 1, the T-shaped structure 2 divides the melting tank 1 into a melting area and a cooling clarifying area which are mutually communicated, the first top-inserted electrodes 3 and the second top-inserted electrodes 4 are distributed in the melting area above the melting tank 1 at intervals at certain angles along the circumferential direction, the first top-inserted electrodes 3 and the second top-inserted electrodes 4 form certain included angles with the top surface of the melting tank 1, the length of the first top-inserted electrodes 3 is greater than that of the second top-inserted electrodes 4, and a plurality of bottom-inserted electrodes 5 are uniformly distributed in the cooling clarifying area at the bottom of the melting tank 1 along the circumferential direction; the first top plug electrode 3, the second top plug electrode 4 and the bottom plug electrode 5 are respectively and electrically connected with an electric control system, and the electric control system is a three-phase open winding and has 6 taps.
In the embodiment, the T-shaped structure 2 divides the melting tank 1 into a melting area at the upper part and a cooling clarifying area at the lower part, so that defective glass liquid in the melting area is blocked by the T-shaped structure 2 of the melting tank 1 and then returns to the melting area for melting, so that the glass liquid in the melting area is melted more fully, wherein the boundary between the melting area and the cooling clarifying area is positioned at the position of 350mm-500mm below the second top-inserted electrode 4, and the length of the boundary is positioned between the arranged first top-inserted electrode 3 and the lower end of the second top-inserted electrode 4; the first top-inserted electrode 3 and the second top-inserted electrode 4 are installed in a top-inserted manner, and the installation manner is a common technical means in the art, so that the description is omitted. The first top insert electrode 3 and the second top insert electrode 4 are positioned at the top of the melting tank 1 to guide current and provide a heat source for glass liquid melting in the glass electric melting furnace, and the bottom insert electrode 5 is positioned at the bottom of the melting tank 1 to provide heat for cooling the glass liquid temperature balance of the clarification area and starting the glass electric melting furnace.
Specifically, the included angle between the first top inserting electrode 3 and the second top inserting electrode 4 and the vertical plane of the melting tank 1 is 8 degrees. The first top plug electrode 3 is 250mm-300mm longer than the second top plug electrode 4.
In this embodiment, the first top-inserted electrode 3 and the second top-inserted electrode 4 are controlled by an electrical control system to independently transmit power, so that layered and adjustable ground heat sources are longitudinally provided in the melting area of the melting tank 1, and can be adjusted in layers according to the melting requirement, so that a relatively uniform heat source is longitudinally provided for melting glass.
Specifically, two first top-inserted electrodes 3 are in one group, six groups are arranged in total, the six groups of first top-inserted electrodes 3 are distributed in a regular polygon, and the included angle between two adjacent groups of first top-inserted electrodes 3 is 60 degrees; six second top-inserted electrodes 4 are equidistantly distributed to form a circle which is the same as the center of the polygon, and the included angle between two adjacent second top-inserted electrodes 4 is 60 degrees; the included angle between the central line of each group of first top-inserted electrodes 3 and the adjacent second top-inserted electrodes 4 is 30 degrees.
In this embodiment, the first top electrode 3 and the second top electrode 4 are uniformly distributed in the horizontal direction of the melting tank 1, and provide a relatively uniform heat source for the transverse molten glass melting.
Specifically, six bottom inserting electrodes 5 are circumferentially and uniformly distributed at the bottom of the melting tank 1, and the included angle between two adjacent bottom inserting electrodes 5 is 60 degrees; the circle center formed by the bottom inserting electrode 5 and the circle center formed by the second top inserting electrode 4 are the same circle center, the radius of the circle formed by the bottom inserting electrode 5 is smaller than the radius of the circle formed by the second top inserting electrode 4, and the included angle between any bottom inserting electrode 5 and the adjacent second top inserting electrode 4 is 30 degrees.
In this embodiment, the bottom insert electrode 5 is circumferentially distributed at the bottom of the melting tank 1, so as to balance the temperature of the glass liquid in the cooling and clarifying area and provide heat for starting the glass electric melting furnace, meanwhile, the bottom insert electrode 5 is distributed at the inner ring of the top insert electrode, the bottom insert electrode 5 interacts with the top insert electrode, and the problem of heat attenuation in the middle of the circle formed by the top insert electrode is solved by the bottom insert electrode 5.
Specifically, the distance between two electrodes of each group of first top-inserted electrodes 3 is 8-11 times of the diameter of the electrode body.
Specifically, the distance between the first top-inserted electrode 3 and the second top-inserted electrode 4 and the wall of the melting tank 1 is 5-8 times of the diameter of the electrode body. The diameter of the electrode is less than or equal to 1.2A/cm according to the current density born by the surface area of the electrode 2 And (5) designing.
In the embodiment, the first top-inserted electrode 3 and the second top-inserted electrode 4 are far away from the wall of the melting tank 1, and the glass liquid circulation flow generated by the electrodes is far away from the wall of the melting tank, so that corrosion to refractory materials of the wall of the melting tank is reduced.
The application process of the invention is as follows:
first, when the glass electric melting furnace is operated, power is transmitted to the first top plug electrode 3 and the second top plug electrode 4 through the electric control system, and the power is a main heat source of the glass electric melting furnace. The first top-inserted electrode 3 and the second top-inserted electrode 4 are far away from the wall of the melting tank 1, and the glass liquid circulation flow generated by the electrodes is far away from the wall of the melting tank, so that corrosion to refractory materials of the wall of the melting tank is reduced; the first top inserting electrode 3 and the second top inserting electrode 4 are uniformly distributed around the melting tank 1, and current is conveyed to the periphery of the melting tank 1 through the top inserting electrodes, so that uniform distribution is ensured, no power distribution dead angle exists transversely, and glass liquid is sufficiently melted. The first top-inserted electrode 3 is 250-300mm longer than the second top-inserted electrode 4, and even distribution of power can be ensured in the longitudinal direction of the glass electric melting tank 1. Therefore, the power distribution of the melting area of the melting tank 1 has no dead angle, and the molten glass at each part can be fully melted. And the glass liquid is driven by an electrode heat source to generate glass liquid circulating liquid flow, the T-shaped structure 2 effectively blocks the glass liquid rushing down from the pool wall part, and the glass liquid with quality defects continuously flows back to the melting area to be continuously melted, so that the glass liquid with quality reaching the standard enters the cooling and clarifying area repeatedly. The bottom inserted electrode 5 supplements the temperature of the glass liquid entering the cooling and clarifying area, so that the temperature is proper when the glass liquid enters the forming area.
The embodiment can realize the problems of insufficient glass liquid melting, stones, bubbles and other defects of the glass electric melting furnace with the daily discharge amount of more than 60 tons, and can be applied to the glass liquid melting of the glass electric melting furnace with the daily discharge amount of 70 tons in the actual application process, the glass liquid temperature is balanced, the melting is sufficient, and the glass electric melting furnace is effectively pushed to develop towards the larger tonnage daily output glass liquid direction.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (4)
1. An electrode layout combination system of a large-tonnage glass electric melting furnace is characterized in that: the electric control system comprises a melting tank (1), a T-shaped structure (2), a first top-inserted electrode (3), a second top-inserted electrode (4) and a bottom-inserted electrode (5), wherein the T-shaped structure (2) is arranged in the middle of the melting tank (1), the T-shaped structure (2) divides the melting tank (1) into a melting area and a cooling clarification area which are communicated with each other, the first top-inserted electrode (3) and the second top-inserted electrode (4) are distributed in the melting area above the melting tank (1) at intervals at certain angles along the circumferential direction, the first top-inserted electrode (3) and the second top-inserted electrode (4) are positioned at the top of the melting tank (1), the first top-inserted electrode (3) and the second top-inserted electrode (4) are far away from the tank wall of the melting tank (1), the first top-inserted electrode (3) and the second top-inserted electrode (4) are all in certain angles with the top surface of the melting tank (1), the length of the first top-inserted electrode (3) is longer than the length of the second top-inserted electrode (4) at certain angles, the length of the second top-inserted electrode (4) is distributed at certain intervals along the circumferential direction, and the first top-inserted electrode (4) and the bottom-inserted electrode (5) are uniformly distributed along the circumferential direction; the included angle between the first top inserting electrode (3) and the second top inserting electrode (4) and the vertical plane of the melting tank (1) is 8 degrees; the first top-inserted electrode (3) is 250mm-300mm longer than the second top-inserted electrode (4); two first top-inserted electrodes (3) are in one group, six groups are arranged in total, the six groups of the first top-inserted electrodes (3) are distributed in a regular polygon, and the included angle between two adjacent groups of the first top-inserted electrodes (3) is 60 degrees; six second top-inserted electrodes (4) are equidistantly distributed to form a circle which is the same as the center of the regular polygon, and the included angle between two adjacent second top-inserted electrodes (4) is 60 degrees; the included angle between the central line of each group of first top-inserted electrodes (3) and the adjacent second top-inserted electrodes (4) is 30 degrees; six bottom inserting electrodes (5) are circumferentially and uniformly distributed at the bottom of the melting tank (1), and the included angle between two adjacent bottom inserting electrodes (5) is 60 degrees; the circle center formed by the bottom inserting electrode (5) and the circle center formed by the second top inserting electrode (4) are the same circle center, the radius of the circle formed by the bottom inserting electrode (5) is smaller than that of the circle formed by the second top inserting electrode (4), and the included angle between any bottom inserting electrode (5) and the adjacent second top inserting electrode (4) is 30 degrees.
2. The large tonnage glass electric melting furnace electrode layout combination system according to claim 1, wherein: the distance between two electrodes of each group of the first top inserting electrode (3) is 8-11 times of the diameter of the electrode body.
3. The large tonnage glass electric melting furnace electrode layout combination system according to claim 2, wherein: the distance between the first top-inserted electrode (3) and the second top-inserted electrode (4) and the wall of the melting tank (1) is 5-8 times of the diameter of the electrode body.
4. A large tonnage glass electric furnace electrode layout combination system according to claim 3, characterized in that: the diameter of the electrode body is less than or equal to 1.2A/cm according to the current density born by the surface area of the electrode 2 And (5) designing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111295220.8A CN113860705B (en) | 2021-11-03 | 2021-11-03 | Electrode layout combination system of large-tonnage glass electric melting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111295220.8A CN113860705B (en) | 2021-11-03 | 2021-11-03 | Electrode layout combination system of large-tonnage glass electric melting furnace |
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| Publication Number | Publication Date |
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| CN113860705A CN113860705A (en) | 2021-12-31 |
| CN113860705B true CN113860705B (en) | 2024-02-20 |
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2021
- 2021-11-03 CN CN202111295220.8A patent/CN113860705B/en active Active
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| CN113860705A (en) | 2021-12-31 |
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