CN115010346A - Cold repair method and structure of main crown of glass melting furnace - Google Patents
Cold repair method and structure of main crown of glass melting furnace Download PDFInfo
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- CN115010346A CN115010346A CN202210851119.4A CN202210851119A CN115010346A CN 115010346 A CN115010346 A CN 115010346A CN 202210851119 A CN202210851119 A CN 202210851119A CN 115010346 A CN115010346 A CN 115010346A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to the technical field of glass melting furnaces, in particular to a cold repair method for a big arch of a glass melting furnace.A used arch brick is adopted to build the used arch part, the width direction of the used arch part is consistent with the length direction of the furnace, the width size is consistent with the width size of the used big arch, the length direction is consistent with the width direction of the furnace, and the length size is consistent with the designed width size of a new big arch; the new arch portion connected with the old arch portion is built by the new arch bricks, the width direction of the new arch portion is consistent with the width direction of the kiln, the width dimension is consistent with the design width dimension of the new arch, the length direction is consistent with the length direction of the kiln, and the sum of the length dimension and the width dimension of the old arch portion is consistent with the design length dimension of the new arch. The cold repair structure of the glass melting furnace crown obtained by the cold repair method comprises a new crown, wherein the new crown comprises an old crown part built by adopting old bricks and a new crown part built by adopting new bricks and vertically connected with the old crown part. The old arch brick is reserved and utilized, and the cold repair cost is low.
Description
Technical Field
The invention relates to the technical field of glass melting furnaces, in particular to a cold repair method for a crown of a glass melting furnace and a cold repair structure for the crown of the glass melting furnace obtained by the cold repair method.
Background
With the development of the glass industry, the structure and materials of a furnace for melting the clarified glass are continuously developed, and particularly, the furnace is used for producing high-grade glass such as TFT, high borosilicate glass, medicinal glass and the like, and the materials of the furnace are greatly different from those of common float glass. Because the special glass has small production and adopts the modes of oxy-fuel combustion and the like, the main crown of the melting part of the kilns is basically of an electric melting brick structure.
The life of the kiln is called the kiln stage and after use has reached one kiln stage, the entire kiln needs to be taken out of production for cold repair. For reasons of energy consumption and economic efficiency, it is often considered to increase the length and width of the melting section in the second kiln stage to increase the melting capacity of the kiln and thus the production. The melting part of the kiln is surrounded by a main arch, breast walls for supporting two ends of the main arch, a pool wall and the like to form a flame space. The kiln crown is an arc-shaped structure built by arch bricks with trapezoidal cross sections, so that the number and the shape of the arch bricks are determined by accurately adapting to the design size of the crown, and after the size of the crown is modified, the old arch bricks cannot be suitable for the size design of a new crown. The traditional main crown cold repair method is to redesign and determine the size, shape and number of new crown bricks according to the size of the new main crown, and the new main crown is built by all the new crown bricks, so that the cost is high.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a method and a structure for cold repairing a crown of a glass melting furnace, which can realize a large cost saving by reserving and utilizing an old crown brick before cold repairing.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a cold repair method of a glass melting furnace main arch, which comprises the steps of dismantling an old main arch, building the old arch part which is vertically arranged with the old main arch by using old arch bricks of the old main arch, wherein the width direction of the old arch part is consistent with the length direction of a furnace, the width dimension of the old arch part is consistent with the width dimension of the old main arch, the length direction of the old arch part is consistent with the width direction of the furnace, and the length dimension of the old arch part is consistent with the design width dimension of the new main arch; the method is characterized in that a new arch portion connected with an old arch portion is built on one side of the new arch brick with the designed size in the width direction of the old arch portion, the width direction of the new arch portion is consistent with the width direction of a kiln, the width size of the new arch portion is consistent with the designed width size of a new arch, the length direction of the new arch portion is consistent with the length direction of the kiln, and the sum of the length size of the new arch portion and the width size of the old arch portion is consistent with the designed length size of the new arch.
Preferably, when the old arch portion is built, the height of the breast wall supporting the old arch portion is increased, and the arch angle of the old arch portion is not lower than the arch top of the new arch portion.
The invention also provides a cold repair structure of the glass melting furnace main arch, which is obtained by adopting the cold repair method of the glass melting furnace main arch, and comprises a new main arch and a new main arch, wherein the new main arch comprises an old arch part which is built by using old arch bricks of the old main arch and is vertically arranged with the old main arch and a new arch part which is built by using new arch bricks with designed sizes and is vertically connected with the old main arch part along the length direction of the furnace.
Preferably, the arch top of the new arch portion is not higher than the arch angle of the old arch portion.
Compared with the prior art, the invention has the remarkable progress that:
the invention keeps and utilizes the old arch brick of the old main arch during cold repair, rebuilds the old arch brick to form the old arch part, and then adopts the new arch brick to build the new arch part, and the new arch part and the old arch part jointly realize the requirements of the design width size and the design length size of the new main arch, thereby obviously reducing the using amount of the new arch brick and greatly saving the cost of cold repair.
Drawings
FIG. 1 is a schematic front view of an old crown in a cold repair method for a glass melting furnace crown according to an embodiment of the present invention.
Figure 2 is a side view of the old crown shown in figure 1.
FIG. 3 is a schematic front view of a cold repair structure obtained by the cold repair method for the crown of the glass melting furnace according to the embodiment of the invention.
Figure 4 is a side view of the new crown in the cold repair configuration of figure 3.
Wherein the reference numerals are as follows:
1 old big arch
10 breast wall
2 New big arch
21 old arch part
22 new arch part
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
For the cold repair of the glass melting furnace after the end of one furnace period, because the number and the shape of the crown bricks are determined by accurately adapting to the design size of the main crown, when the size of the main crown is modified, the old crown bricks of the old main crown cannot be suitable for the size design of the new main crown, so that the traditional cold repair of the main crown cannot keep the old crown bricks of the old main crown but totally adopts the redesigned new crown bricks to build the new main crown, which is a technical bias existing in the prior art and causes high cold repair cost.
In the actual production, the observation of a plurality of actual production lines shows that when the glass melting furnace finishes one furnace period, the erosion condition of the crown of the melting part of the electric melting brick structure furnace is much lighter than that of a breast wall, a pool wall and the like, and the crown brick structure material of the crown can be used next in the second furnace period. Based on the technical bias, the invention provides a cold repair method of the glass melting furnace crown, which can keep and utilize the old crown brick of the old crown, so as to realize the purpose of saving the cost.
As shown in fig. 1 to 4, one embodiment of the cold repair method for the crown of the glass melting furnace of the present invention. It should be noted that, in the description of the present invention, for the main arch (the main arch 1/the main arch 2/the main arch portion 21/the main arch portion 22), the width of the main arch refers to the span of an arc formed by sequentially arranging a row of arch bricks along an arc, the length of the main arch refers to the extension of the main arch along the axial direction of the arc, the width of the main arch is the extension of the width of the main arch, and the length of the main arch is the extension of the length of the main arch; in the kiln, the longitudinal direction of the kiln refers to the left-right direction of the paper surface of fig. 1 (or fig. 3), the width direction of the kiln refers to the inner and outer side directions of the paper surface of fig. 1 (or fig. 3), and the width direction of the kiln also refers to the left-right direction of the paper surface of fig. 2 (or fig. 4); before cold repair, the length direction of the old crown 1 is consistent with the length direction of the kiln, and the width direction of the old crown 1 is consistent with the width direction of the kiln.
The cold repair method for the glass melting furnace crown comprises the steps of removing the old crown 1, re-laying the old crown 21 by using old bricks of the old crown 1, wherein the old crown 21 is vertically arranged with the old crown 1, the width direction of the old crown 21 is consistent with the length direction of the furnace, the width dimension W21 of the old crown 21 is consistent with the width dimension W1 of the old crown 1, the length direction of the old crown 21 is consistent with the width direction of the furnace, and the length dimension L21 of the old crown 21 is consistent with the design width dimension W2 of the new crown 2. In practical application, the length L21 of the old arch portion 21 can be adjusted to the design width W2 of the new arch 2 by appropriately increasing or decreasing the number of rows of the old arch bricks in the length direction of the old arch portion 21 according to the design width W2 of the new arch 2 required for cold repair. Usually, the design width dimension W2 of the new main arch 2 after cold repair does not exceed the length dimension L1 of the old main arch 1, if the design width dimension W2 of the new main arch 2 is exactly equal to the length dimension L1 of the old main arch 1, the number of the old arch bricks does not need to be increased or decreased when the old arch portion 21 is built, the length dimension L21 of the old arch portion 21 is consistent with the length dimension L1 of the old main arch 1, and in this case, the old arch portion 21 is formed by integrally rotating the old main arch 1 by 90 degrees; if the design width dimension W2 of the new big arch 2 is smaller than the length dimension L1 of the old big arch 1, the number of rows of the old arch bricks needs to be reduced when the old arch portion 21 is built, so that the length dimension L21 of the old arch portion 21 matches the design width dimension W2 of the new big arch 2.
After the old arch portion 21 is built, the new arch portion 22 is built on one side of the new arch brick with the designed size in the width direction of the old arch portion 21, and the new arch portion 22 is connected with the old arch portion 21 and is perpendicular to the old arch portion 21. The width direction of the new arch portion 22 is consistent with the width direction of the kiln, the width dimension W22 of the new arch portion 22 is consistent with the design width dimension W2 of the new crown 2, the length direction of the new arch portion 22 is consistent with the length direction of the kiln, and the sum of the length dimension L22 of the new arch portion 22 and the width dimension W21 of the old arch portion 21 is consistent with the design length dimension L2 of the new crown 2, so that the new crown 2 formed by vertically connecting the new arch portion 22 and the old crown portion 21 and meeting the requirements of the design width dimension W2 and the design length dimension L2 of the new crown 2 is obtained. The design size and the number of the new arch bricks adopted by the new arch portion 22 are designed according to the design width dimension W2 and the design length dimension L2 of the new arch 2 and the width dimension W21 of the old arch portion 21.
Therefore, the cold repair method of the glass melting furnace main arch of the embodiment reserves the old arch brick of the old main arch 1, the old arch brick is rebuilt to form the old arch part 21, the new arch brick is rebuilt to form the new arch part 22, the new arch part 22 and the old arch part 21 jointly meet the requirements of the design width dimension W2 and the design length dimension L2 of the new main arch 2, the using amount of the new arch brick is obviously reduced, and the cold repair cost is greatly saved.
In order to realize the transition connection between the new arch portion 22 and the old arch portion 21, in the present embodiment, referring to fig. 3, preferably, when the old arch portion 21 is built, the height of the breast wall 10 supporting the old arch portion 21 is increased, so that the arch angle of the old arch portion 21 is not lower than the arch top of the new arch portion 22. The arch angle of the old arch portion 21 is located between the breast wall 10 and the old arch portion 21, and plays a role in connection and support. The crown of the new crown portion 22 is the highest point of the outer circular arc at the top of the new crown portion 22. The arch top of the new arch portion 22 is not higher than the height position of the arch angle of the old arch portion 21, which is beneficial to realizing the seamless connection between the new arch portion 22 and the old arch portion 21.
In this embodiment, the material of the arch brick (old arch brick of old main arch 1/new arch brick of new arch portion 22) is preferably fused AZS, fused α β brick, fused β brick or fused magnesia alumina spinel.
Based on the cold repair method for the glass melting furnace main arch, the embodiment of the invention also provides a cold repair structure for the glass melting furnace main arch, the cold repair structure for the glass melting furnace main arch of the embodiment is obtained by adopting the cold repair method for the glass melting furnace main arch of the embodiment, referring to fig. 3 and 4, the cold repair structure for the glass melting furnace main arch of the embodiment comprises a new main arch 2, the new main arch 2 comprises an old arch portion 21 which is built by adopting the old bricks of the old main arch 1 and is vertically arranged with the old main arch 1, and a new arch portion 22 which is built by adopting the new bricks with designed sizes and is vertically connected with the old main arch portion 21 along the length direction of the furnace. Preferably, the crown of the new crown portion 22 is not higher than the crown angle of the old crown portion 21. The preferred material of the arch brick (old arch brick of old main arch 1/new arch brick of new arch portion 22) is fused AZS or fused alpha beta brick or fused magnesia-alumina spinel.
In summary, the cold repair method and structure for the crown of the glass melting furnace in the embodiment realize great cost saving by reserving and utilizing the old crown bricks of the old crown 1 before cold repair. Preliminary estimation shows that if a 25t/d furnace using the electric melting brick crown is cold-repaired to be a 35t/d new furnace, the cold repair method and the structure of the glass melting furnace crown can save at least 200 thousands of investment for the crown and have obvious cost saving effect.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (4)
1. A cold repair method for a glass melting furnace crown is characterized in that an old crown (1) is dismantled, an old crown portion (21) which is perpendicular to the old crown (1) is built by adopting old crown bricks of the old crown (1), the width direction of the old crown portion (21) is consistent with the length direction of a furnace, the width dimension of the old crown portion (21) is consistent with the width dimension of the old crown (1), the length direction of the old crown portion (21) is consistent with the width direction of the furnace, and the length dimension of the old crown portion (21) is consistent with the design width dimension of a new crown (2); a new arch portion (22) connected with the old arch portion (21) is built on one side of the new arch brick with the designed size in the width direction of the old arch portion (21), the width direction of the new arch portion (22) is consistent with the width direction of the kiln, the width dimension of the new arch portion (22) is consistent with the designed width dimension of the new arch (2), the length direction of the new arch portion (22) is consistent with the length direction of the kiln, and the sum of the length dimension of the new arch portion (22) and the width dimension of the old arch portion (21) is consistent with the designed length dimension of the new arch (2).
2. The cold repair method for a crown of a glass melting furnace according to claim 1, wherein a height of a breast wall (10) supporting the old crown (21) is increased so that a crown angle of the old crown (21) is not lower than a crown top of the new crown (22) in a height position when the old crown (21) is constructed.
3. A cold repair structure of a glass melting furnace crown, which is characterized by being obtained by the cold repair method of the glass melting furnace crown as claimed in claim 1 or 2, and comprising a new crown (2), wherein the new crown (2) comprises an old crown portion (21) which is built by using old crown bricks of the old crown (1) and is vertically arranged with the old crown (1) and a new crown portion (22) which is built by using new crown bricks with designed sizes and is vertically connected with the old crown portion (21) along the length direction of the furnace.
4. The cold repair structure for a crown of a glass melting furnace as claimed in claim 3, wherein the crown of the new crown (22) is not higher than the crown angle of the old crown (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210851119.4A CN115010346B (en) | 2022-07-19 | 2022-07-19 | Cold repair method and structure for glass melting furnace crown |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210851119.4A CN115010346B (en) | 2022-07-19 | 2022-07-19 | Cold repair method and structure for glass melting furnace crown |
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| CN115010346A true CN115010346A (en) | 2022-09-06 |
| CN115010346B CN115010346B (en) | 2023-10-03 |
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| CN109631588A (en) * | 2019-01-31 | 2019-04-16 | 王贵江 | A kind of method for maintaining of all-electric melting kiln |
| CN210528491U (en) * | 2019-07-11 | 2020-05-15 | 南京佰盛玻璃技术有限公司 | Energy-saving kiln for efficient production of water glass |
| CN111410404A (en) * | 2020-04-01 | 2020-07-14 | 秦皇岛玻璃工业研究设计院有限公司 | Rolled glass melting furnace and reinforcing method thereof |
| CN212058289U (en) * | 2020-04-21 | 2020-12-01 | 山西青春玻璃有限公司 | Recycling kiln pool wall brick with cooling device |
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2022
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Patent Citations (6)
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| CN101907298A (en) * | 2010-07-31 | 2010-12-08 | 中国洛阳浮法玻璃集团有限责任公司 | Hot repair method of port tongue arch of coal-burning glass furnace |
| JP2014091764A (en) * | 2012-11-01 | 2014-05-19 | Jfe Steel Corp | Method for repairing coke oven by partial replacement |
| CN109631588A (en) * | 2019-01-31 | 2019-04-16 | 王贵江 | A kind of method for maintaining of all-electric melting kiln |
| CN210528491U (en) * | 2019-07-11 | 2020-05-15 | 南京佰盛玻璃技术有限公司 | Energy-saving kiln for efficient production of water glass |
| CN111410404A (en) * | 2020-04-01 | 2020-07-14 | 秦皇岛玻璃工业研究设计院有限公司 | Rolled glass melting furnace and reinforcing method thereof |
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