CN115010346B - Cold repair method and structure for glass melting furnace crown - Google Patents

Cold repair method and structure for glass melting furnace crown Download PDF

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Publication number
CN115010346B
CN115010346B CN202210851119.4A CN202210851119A CN115010346B CN 115010346 B CN115010346 B CN 115010346B CN 202210851119 A CN202210851119 A CN 202210851119A CN 115010346 B CN115010346 B CN 115010346B
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China
Prior art keywords
arch
old
new
crown
consistent
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CN202210851119.4A
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CN115010346A (en
Inventor
胡曦
何奎
施凌毓
吴琼辉
江欢
陈小牛
刘江华
游俊
罗文彬
于成
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China Triumph International Engineering Co Ltd
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China Triumph International Engineering Co Ltd
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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
    • 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
    • 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, which adopts old arch bricks to build an old arch part, wherein the width direction of the old arch part is consistent with the length direction of a kiln, the width dimension is consistent with the width dimension of the old big arch, the length direction is consistent with the width direction of the kiln, and the length dimension is consistent with the design width dimension of a new big arch; the method comprises the steps of adopting a new arch brick to build a new arch part connected with an old arch part, wherein the width direction of the new arch part is consistent with the width direction of a 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 part is consistent with the design length dimension of the new arch. The glass melting furnace main crown obtained by the cold repair method comprises a new main crown, wherein the new main crown comprises an old crown part built by using old crown bricks and a new crown part built by using the new crown bricks and vertically connected with the old crown part. The old crown bricks are reserved and utilized, and the cold repair cost is low.

Description

Cold repair method and structure for glass melting furnace crown
Technical Field
The invention relates to the technical field of glass melting furnaces, in particular to a cold repair method for a glass melting furnace main arch and a cold repair structure for the glass melting furnace main arch obtained by adopting the cold repair method.
Background
With the development of the glass industry, kiln structures and materials for melting clear glass are also continuously developed, in particular to a kiln for producing high-grade glass such as TFT, high-boron silicon, medicinal glass and the like, and the materials of the kiln are greatly different from those of common float glass. Because the special glass has smaller yield generally and adopts modes of oxy-fuel combustion and the like, the melting part arches of the kilns are basically in electric melting brick structures.
The life of the kiln is called kiln period and after a kiln period is reached, the entire kiln needs to be shut down for cold repair. For reasons of energy consumption and economic benefit, it is often considered to increase the length and width of the melting section during the second kiln period to increase the melting capacity of the kiln and thus increase the yield. The melting part of the kiln is surrounded by a main arch, breast walls supporting two ends of the main arch, pool walls and other parts to form a flame space. Because the kiln crown is an arc-shaped structure built by the crown bricks with the trapezoid cross section, the number and the shape of the crown bricks are accurately adapted to the design size of the crown, and when the size of the crown is modified, the old crown bricks cannot be suitable for the size design of a new crown. The traditional cold repair of the crown is to redesign and determine the size, shape and number of the new crown bricks according to the size of the new crown, and the new crown bricks are all adopted to build the new crown with high cost.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a cold repair method and structure for a glass melting furnace crown, which can save a large cost by reserving and utilizing old crown bricks before cold repair.
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 removing an old main arch, adopting old arch bricks of the old main arch to build an old arch part which is vertically arranged with 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 a new main arch; the method comprises the steps of adopting a new crown brick with a design size to build a new crown part connected with an old crown part on one side of the width direction of the old crown part, wherein the width direction of the new crown part is consistent with the width direction of a kiln, the width dimension of the new crown part is consistent with the design width dimension of a new crown, the length direction of the new crown part is consistent with the length direction of the kiln, and the sum of the length dimension of the new crown part and the width dimension of the old crown part is consistent with the design length dimension of the new crown.
Preferably, when the old arch is built, the height of the breast wall supporting the old arch is increased, so that the height position of the arch angle of the old arch is not lower than the arch top of the new arch.
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, wherein the new main arch comprises an old arch part built by old arch bricks of the old main arch and vertically arranged with the old main arch and a new arch part built by new arch bricks of a designed size and vertically connected with the old arch part along the length direction of the furnace.
Preferably, the crown of the new crown is not higher than the height position of the crown angle of the old crown.
Compared with the prior art, the invention has obvious progress:
the invention reserves and utilizes the old crown bricks of the old crown during cold repair, re-builds the old crown bricks to form the old crown part, builds the new crown part by adopting the new crown bricks, and realizes the requirements of the design width dimension and the design length dimension of the new crown by the new crown part and the old crown part together, thereby obviously reducing the use quantity of the new crown bricks and greatly saving the cold repair cost.
Drawings
FIG. 1 is a schematic diagram of a main view of an old crown in a method for cold repair of a glass melting furnace crown according to an embodiment of the present invention.
Fig. 2 is a side view schematic of the old crown shown in fig. 1.
Fig. 3 is a schematic front view of a cold repair structure obtained by the method for cold repairing a glass melting furnace crown according to an embodiment of the present invention.
Fig. 4 is a side view of the new crown in the cold repair structure shown in fig. 3.
Wherein reference numerals are as follows:
1. old big arch
10. Chest wall
2. New big arch
21. Old arch
22. New arch
Detailed Description
The following describes the 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 be limiting.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
For the furnace cold repair of the glass melting furnace after one kiln period is finished, because the number and the shape of the crown bricks are accurately adapted to the design size of the crown, when the size of the crown is modified, the old crown bricks of the old crown cannot be suitable for the size design of the new crown, so that the traditional crown cold repair cannot keep the old crown bricks of the old crown, but completely adopts the redesigned new crown bricks to build the new crown, which is a technical prejudice existing in the prior art, and the cold repair cost is high.
In actual production, through observation of a plurality of actual production lines, when one kiln period of the glass melting kiln is finished, the erosion condition of the melting part crown of the electric melting brick structure kiln is much lighter than that of the breast wall, the pool wall and other parts, and the crown brick structure material of the crown can be used next in the second kiln period. Based on the above, the invention overcomes the technical bias of the prior art, and provides a cold repair method of a glass melting furnace main arch capable of retaining and utilizing the old crown bricks of the old main arch, so as to achieve the aim of saving cost.
As shown in fig. 1 to 4, one embodiment of the method of cold repair of a glass melting furnace crown of the present invention. In the description of the present invention, the width dimension of the main arch (old main arch 1/new main arch 2/old main arch 21/new main arch 22) refers to the span dimension of the circular arc shape formed by arranging a row of bricks in sequence along a circular arc, the length dimension of the main arch refers to the extending dimension of the main arch along the axial direction of the circular arc shape, the width direction of the main arch is the extending direction of the width dimension of the main arch, and the length direction of the main arch is the extending direction of the length dimension of the main arch; the length direction of the kiln refers to the left-right direction of the paper surface in fig. 1 (or fig. 3), the width direction of the kiln refers to the inner-outer direction of the paper surface in fig. 1 (or fig. 3), and the width direction of the kiln also refers to the left-right direction of the paper surface in 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 of the glass melting furnace main arch of the embodiment is to remove the old main arch 1, re-construct the old arch 21 by adopting old arch bricks of the old main arch 1, wherein the old arch 21 and the old main arch 1 are vertically arranged, the width direction of the old arch 21 is consistent with the length direction of the furnace, the width dimension W21 of the old arch 21 is consistent with the width dimension W1 of the old main arch 1, the length direction of the old arch 21 is consistent with the width direction of the furnace, and the length dimension L21 of the old arch 21 is consistent with the design width dimension W2 of the new main arch 2. In practical application, according to the design width dimension W2 of the new crown 2 required by the cold repair, the length dimension L21 of the old crown 21 can be adjusted to the design width dimension W2 of the new crown 2 by appropriately increasing or decreasing the number of rows of old crown bricks in the length direction of the old crown 21. In general, the design width dimension W2 of the new crown 2 after cold repair does not exceed the length dimension L1 of the old crown 1, if the design width dimension W2 of the new crown 2 is exactly equal to the length dimension L1 of the old crown 1, the number of old crown bricks is not required to be increased or decreased when the old crown portion 21 is built, and the length dimension L21 of the old crown portion 21 is identical to the length dimension L1 of the old crown 1, in which case the old crown portion 21 is equivalent to integrally rotating the old crown 1 by 90 °. If the design width dimension W2 of the new crown 2 is smaller than the length dimension L1 of the old crown 1, the number of rows of old crown bricks needs to be reduced when the old crown 21 is built, so that the length dimension L21 of the old crown 21 matches the design width dimension W2 of the new crown 2.
After the old arch portion 21 is built, a new arch portion 22 is built on one side of the old arch portion 21 in the width direction by adopting a new arch brick with a designed size, and the new arch portion 22 is connected with the old arch portion 21 and is mutually perpendicular. The width direction of the new crown 22 is consistent with the width direction of the kiln, the width dimension W22 of the new crown 22 is consistent with the design width dimension W2 of the new crown 2, the length direction of the new crown 22 is consistent with the length direction of the kiln, the sum of the length dimension L22 of the new crown 22 and the width dimension W21 of the old crown 21 is consistent with the design length dimension L2 of the new crown 2, and therefore the new crown 2 which is formed by vertically connecting the new crown 22 and the old crown 21 and meets 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 number of the new crown bricks adopted by the new crown 22 are designed according to the requirements of the design width size W2 and the design length size L2 of the new crown 2 and the width size W21 of the old crown 21.
Therefore, the cold repair method of the glass melting furnace main arch of the embodiment reserves and utilizes the old arch bricks of the old main arch 1, re-builds the old arch bricks to form the old arch part 21, builds the new arch part 22 by adopting the new arch bricks, and realizes the requirements of the design width dimension W2 and the design length dimension L2 of the new main arch 2 by the new arch part 22 and the old arch part 21 together, thereby remarkably reducing the use quantity of the new arch bricks and greatly saving the cold repair cost.
In order to achieve the transition between the old arch portion 21 and the new arch portion 22, in this embodiment, referring to fig. 3, it is preferable to increase the height of the breast wall 10 supporting the old arch portion 21 when the old arch portion 21 is built, so that the height position of 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 part 21 is positioned between the breast wall 10 and the old arch part 21, and plays a role of connection and support. The crown of the new crown 22 refers to the highest point of the outer arc of the top of the new crown 22. The crown of the new crown 22 is not higher than the height position of the crown angle of the old crown 21, which is beneficial to realizing the seamless connection between the new crown 22 and the old crown 21.
In this embodiment, the material of the crown brick (the old crown brick of the old crown 1/the new crown brick of the new crown 22) is preferably electrofused AZS or electrofused αβ brick or electrofused β brick or electrofused magnesia-alumina spinel.
Based on the above-mentioned method for cold repairing a glass melting furnace main arch, the embodiment of the present invention further provides a structure for cold repairing a glass melting furnace main arch, which is obtained by adopting the method for cold repairing a glass melting furnace main arch according to the present embodiment, and referring to fig. 3 and 4, the structure for cold repairing a glass melting furnace main arch of the present embodiment includes a new main arch 2, the new main arch 2 includes an old main arch portion 21 built by using old main arch bricks of the old main arch 1 and arranged vertically to the old main arch 1, and a new main arch portion 22 built by using new main arch bricks of a designed size and vertically joined to 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 height position of the crown angle of the old crown portion 21. The material of the crown brick (the old crown brick of the old crown 1/the new crown brick of the new crown 22) is preferably electrofused AZS or electrofused alpha beta brick or electrofused magnesia-alumina spinel.
In summary, the method and structure for cold repair of the glass melting furnace main crown of the present embodiment realize a larger cost saving by reserving and utilizing the old crown bricks of the old main crown 1 before cold repair. Preliminary estimation shows that if a 25t/d kiln using an electric melting brick crown is modified into a new 35t/d kiln by cold repair, the cold repair method and structure of the glass melting kiln crown can save at least 200 ten thousand crown investment, and the cost saving effect is remarkable.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims (4)

1. The cold repair method of the glass melting furnace main arch is characterized in that an old main arch (1) is removed, an old arch brick of the old main arch (1) is adopted to build an old arch part (21) which is vertically arranged with the old main arch (1), the width direction of the old arch part (21) is consistent with the length direction of a kiln, the width dimension of the old arch part (21) is consistent with the width dimension of the old main arch (1), the length direction of the old arch part (21) is consistent with the width direction of the kiln, and the length dimension of the old arch part (21) is consistent with the design width dimension of a new main arch (2); a new arch part (22) which is connected with the old arch part (21) is built on one side of the width direction of the old arch part (21) by adopting a new arch brick with a designed size, the width direction of the new arch part (22) is consistent with the width direction of the kiln, the width dimension of the new arch part (22) is consistent with the designed width dimension of the new arch (2), the length direction of the new arch part (22) is consistent with the length direction of the kiln, and the sum of the length dimension of the new arch part (22) and the width dimension of the old arch part (21) is consistent with the designed length dimension of the new arch (2).
2. The method for cold repair of glass melting furnace main arch according to claim 1, characterized in that 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 height position of the arch angle of the old arch portion (21) is not lower than the arch crown of the new arch portion (22).
3. The cold repair structure of the glass melting furnace main arch is characterized by being obtained by adopting the cold repair method of the glass melting furnace main arch according to claim 1 or 2, wherein the cold repair structure of the glass melting furnace main arch comprises a new main arch (2), and the new main arch (2) comprises an old arch part (21) which is built by adopting old main arch bricks of an old main arch (1) and is vertically arranged with the old main arch (1) and a new arch part (22) which is built by adopting new arch bricks of a designed size and is vertically connected with the old arch part (21) along the length direction of a kiln.
4. A glass melting furnace main arch cold repair structure according to claim 3, wherein the arch crown of the new arch portion (22) is not higher than the arch angle of the old arch portion (21).
CN202210851119.4A 2022-07-19 2022-07-19 Cold repair method and structure for glass melting furnace crown Active CN115010346B (en)

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CN115010346B true CN115010346B (en) 2023-10-03

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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
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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Publication number Priority date Publication date Assignee Title
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
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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