CN108658432B - Flue structure of glass tank furnace - Google Patents
Flue structure of glass tank furnace Download PDFInfo
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- CN108658432B CN108658432B CN201710191841.9A CN201710191841A CN108658432B CN 108658432 B CN108658432 B CN 108658432B CN 201710191841 A CN201710191841 A CN 201710191841A CN 108658432 B CN108658432 B CN 108658432B
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- flue
- kiln
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- furnace
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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
- C03B5/167—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
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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
- C03B5/04—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in tank furnaces
Abstract
The invention provides a flue structure of a glass tank furnace, which comprises a first flue (1), a second flue (2), a third flue (3) and an exhaust chimney (4); the first flue (1) is communicated with the kiln, the second flue (2) is communicated with the first flue (1), the third flue (3) is communicated with the second flue (2), and the exhaust chimney (4) is communicated with the third flue (3); the first flue (1) is arranged at the feeding end close to the kiln, the first flue (1) and the second flue (2) are arranged at a first preset angle, and the second flue (2) and the third flue (3) are arranged at a second preset angle. The flue structure can greatly reduce the energy consumption of the kiln, reduce the fixed investment of the heat exchanger, reduce the maintenance cost of the heat exchanger and ensure the normal production and operation.
Description
Technical Field
The invention relates to a tank furnace technology, in particular to a flue structure of a large-scale glass tank furnace production line.
Background
The traditional tank furnace structure: the flue is arranged on the kiln breast wall of the kiln, is close to the discharge end, and at about 2/3 th of the length of the kiln, the flue gas runs in the kiln and directly enters the heat exchanger through the horizontal flue and the vertical flue. And then discharged through the heat exchanger. The kiln flue of the type is arranged at the rear end of the unit kiln, the flow direction of flue gas is consistent with that of molten glass, heat in the kiln can be directly taken away by the flue gas and enters the heat exchanger, and the heat in the unit kiln cannot be fully utilized, so that the energy consumption of the kiln is greatly improved.
Because heat is directly brought into the heat exchanger by the flue gas, the temperature of the flue gas entering the heat exchanger is higher, and the heat exchanger is burnt out; and the heat exchanger is arranged at a high altitude, so that the maintenance is difficult at high temperature, and the maintenance cost is high. Volatile matters in the glass liquid directly enter the heat exchanger along with the flue gas, the volatile matters can be attached to the inner wall of the heat exchanger, and along with the lapse of service time, the attachments on the inner wall of the heat exchanger can be more and more, so that the blockage of the heat exchanger is caused, the heat exchanger can not work normally, the flue gas can not be discharged smoothly, the pressure of the tank furnace is out of control, and the normal production is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a glass tank furnace flue structure which can greatly reduce the energy consumption of a furnace, reduce the fixed investment of a heat exchanger, reduce the maintenance cost of the heat exchanger and ensure the normal production and operation.
According to one aspect of the invention, a flue structure of a glass tank furnace is provided, which comprises a first flue, a second flue, a third flue and an exhaust chimney; the first flue is communicated with a kiln, the second flue is communicated with the first flue, the third flue is communicated with the second flue, and the exhaust chimney is communicated with the third flue;
the first flue is arranged close to a feeding end of the kiln, the first flue and the second flue are arranged at a first preset angle, and the second flue and the third flue are arranged at a second preset angle.
Wherein the distance between the first flue and the feeding end is 0-1/4 kiln length.
Wherein the distance between the first flue and the feeding end is 0-1/6 kiln length.
Wherein the distance between the first flue and the feeding end is 0-1/8 kiln length.
Wherein the first predetermined angle is 45-90 ° and the second predetermined angle is 45-90 °.
Wherein the first predetermined angle is 60-90 ° and the second predetermined angle is 60-90 °.
Wherein the first predetermined angle is 90 ° and the second predetermined angle is 90 °.
Wherein the first flue is arranged horizontally.
The length of the first flue is 1/2-2 times of the width of the kiln, the length of the second flue is 1-3 times of the width of the kiln, and the length of the third flue is 3-10 times of the width of the kiln.
The length of the first flue is 1/2-1 times of the width of the kiln, the length of the second flue is 1-2 times of the width of the kiln, and the length of the third flue is 3-6 times of the width of the kiln.
The glass tank furnace flue structure provided by the invention comprises the glass tank furnace flue structure of the embodiment, and comprises a first flue 1, a second flue 2, a third flue 3 and an exhaust chimney 4. The first flue 1 is communicated with the kiln, the second flue 2 is communicated with the first flue 1, the third flue 3 is communicated with the second flue 2, and the exhaust chimney 4 is communicated with the third flue 3. The first flue 1 is arranged at the feeding end close to the kiln, the first flue 1 and the second flue 2 are arranged at a first preset angle, and the second flue 2 and the third flue 3 are arranged at a second preset angle. The number of the flues is at least one, and the flues can be set to be two as shown in figure 1 according to actual situations.
In the production and operation process of the tank furnace, glass raw materials are added into the unit furnace from the batch feeder 5, glass liquid flows according to the flow direction of the glass liquid, smoke flows according to the flow direction of the smoke, the smoke flows in the furnace to form a circulating airflow, the smoke flows into the first flue 1, the second flue 2 and the third flue 3 from the furnace in sequence, and finally is discharged through the exhaust chimney 4.
The molten glass energy consumption of the unit kiln depends on the position of the flue. Traditional tank furnace structure, the position of flue is close to the discharge end of kiln, because the flow direction of flue gas is unanimous with the flow direction of glass liquid, the flue gas directly flows from the flue along with the flow of glass liquid, and a lot of heats can be taken away to the flue gas, and thermal utilization ratio is lower to the energy consumption of unit glass liquid has been increased. In the invention, the distance between the first flue 1 and the feeding end is 0-1/4 kiln length, preferably 0-1/6 kiln length, and further preferably 0-1/8 kiln length. The design of the position of the first flue 1 can enable the flue gas to generate circulating airflow in the kiln when flowing along with the molten glass, namely the flue gas flows along with the molten glass firstly, then flows in the reverse direction of the molten glass, and finally enters the first flue 1, heat taken away by the flue gas flows in the kiln twice, and the circulating airflow is formed, so that the utilization rate of the heat is improved. By adopting the design, the energy consumption of unit glass metal can be reduced.
The first predetermined angle is 45-90 deg., the second predetermined angle is 45-90 deg., preferably the first predetermined angle is 60-90 deg., the second predetermined angle is 60-90 deg., more preferably the first predetermined angle is 90 deg., and the second predetermined angle is 90 deg.. The first flues 1 are arranged horizontally. The angle range is designed to ensure that the flue gas smoothly flows, so that the corrosion of the flue gas to the refractory material of the flue is reduced, and the service life of the flue is prolonged. The optimal angle scheme is most beneficial to processing bricks and is convenient for construction. The third flue 3 is communicated with the second flue 2, and the flue gas flows into the second flue 2 and the third flue 3 through the first flue 1.
In order to prevent volatile matters in flue gas just coming out of the kiln from depositing in the first flue 1, the length of the first flue 1 is designed to be 1/2-2 times of the width of the kiln, and preferably 1/2-1 times of the width of the kiln. The flue gas begins to gradually deposit from the second flue 2, but volatile matters mixed in the flue gas cannot be completely deposited at the bottom of the second flue 2, otherwise the flue can be blocked, and based on the above, the length of the second flue 2 is designed to be 1-3 times of the width of the kiln, and preferably, the length is 1-2 times of the width of the kiln. The flue gas is too high through 3 high temperatures in the third flue, is unfavorable for the volatile substance deposit that mix with in the flue gas, and simultaneously, the flue gas temperature that gets into exhaust chimney 4 can not be higher than 600 degrees centigrade because the highest temperature that bears of steel chimney material is at 600 degrees centigrade, consequently, the length of third flue 3 sets up to 3 ~ 10 times kiln width. Preferably, the width of the kiln is 3-6 times.
The length of the flue is related to the size of the tank furnace, the larger the furnace is, the width of the furnace is wide, and the length of each corresponding flue is also long. The length design of each flue ensures that volatile matters mixed in the flue gas are not deposited in the first flue 1, and the volatile matters mixed in the flue gas are gradually settled in the second flue 2 and the third flue 3, so that the first flue 1 and the second flue 2 are not blocked, the safety of the kiln flue is ensured, and the maintenance cost of the flue is reduced. And the temperature of the flue gas flowing out of the third flue 3 is ensured to be gradually reduced to below 600 ℃, and the normal use of the steel chimney is ensured.
The flue gas directly enters the exhaust chimney 4 to be discharged through the cooling of the first flue 1, the second flue 2 and the third flue 3, so that smooth flowing of the flue gas is ensured, the maintenance cost is reduced, the stability of the kiln pressure is ensured, and the production stability is guaranteed. And the exhaust chimney 4 is adopted, so that the investment is reduced compared with a heat exchanger.
Compared with the prior art, the invention has the following obvious effects:
(1) the first flue is positioned close to the feeding end of the kiln, and the flue gas forms circulating airflow in the kiln, so that heat can be fully utilized, and energy consumption is reduced;
(2) the heat exchanger structure is cancelled, the investment of fixed assets is reduced, the maintenance cost of the heat exchanger is reduced, the negative influence of the heat exchanger on the production is reduced, the production is stabilized, and the adverse influence on the product quality and the yield is eliminated.
(3) The angles and the lengths of the flues are reasonably designed, so that the flue gas is ensured to smoothly circulate in the flues, and the sediment is deposited in the third flue, so that the flues are not blocked; and the temperature of the flue gas reaching the chimney is ensured to be below 600 ℃, so that the normal use of the flue gas is ensured.
Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.
Fig. 1 schematically shows a schematic view of a glass tank furnace flue structure according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The flue structure of the glass tank furnace provided by the invention comprises a first flue 1, a second flue 2, a third flue 3 and an exhaust chimney 4. The first flue 1 is communicated with the kiln, the second flue 2 is communicated with the first flue 1, the third flue 3 is communicated with the second flue 2, and the exhaust chimney 4 is communicated with the third flue 3.
The distance between the first flue 1 and the feeding end is 0-1/4 kiln length, preferably 0-1/6 kiln length, and further preferably 0-1/8 kiln length.
The first flues are arranged horizontally and the first flues 1 and the second flues 2 are arranged at a first predetermined angle of 45-90 deg., preferably 60-90 deg., further preferably 90 deg.. The second flues 2 are arranged at a second predetermined angle to the third flues 3, the second predetermined angle being 45-90 °, preferably 60-90 °, further preferably 90 °.
The length of the first flue 1 is 1/2-2 times of the width of the kiln, preferably 1/2-1 times of the width of the kiln; the length of the second flue 2 is 1-3 times of the width of the kiln, preferably 1-2 times of the width of the kiln; the length of the third flue 3 is set to be 3-10 times of the width of the kiln. Preferably, the width of the kiln is 3-6 times.
Specific examples of the flue structure of the present invention are shown below.
Example 1
A kiln 1: the length is 14.5m and the width is 6.2 m.
The first flue 1 is horizontally arranged, and the distance from the feeding end is 1/4 kiln length; the angle between the first flue 1 and the second flue 2 is 45 degrees, and the angle between the second flue 2 and the third flue 3 is 45 degrees; the length of the first flue 1 is 1/2 times of the furnace width, the length of the second flue 2 is 1 time of the furnace width, and the length of the third flue 3 is set to be 3 times of the furnace width.
Example 2
A kiln 1: the length is 14.5m and the width is 6.2 m.
The first flue 1 is horizontally arranged, and the distance from the feeding end is 1/8 kiln length; the angle between the first flue 1 and the second flue 2 is 90 degrees, and the angle between the second flue 2 and the third flue 3 is 90 degrees; the length of the first flue 1 is 1 time of the width of the kiln, the length of the second flue 2 is 1.5 times of the width of the kiln, and the length of the third flue 3 is 5 times of the width of the kiln.
Example 3
A kiln 1: the length is 14.5m and the width is 6.2 m.
The first flue 1 is horizontally arranged, and the distance from the feeding end is 1/6 kiln length; the angle between the first flue 1 and the second flue 2 is 60 degrees, and the angle between the second flue 2 and the third flue 3 is 60 degrees; the length of the first flue 1 is 1 time of the width of the kiln, the length of the second flue 2 is 2 times of the width of the kiln, and the length of the third flue 3 is 6 times of the width of the kiln.
Example 4
A kiln 2: length 23.6m and width 7.5 m.
The first flue 1 is horizontally arranged, and the distance from the feeding end is 0; the angle between the first flue 1 and the second flue 2 is 80 degrees, and the angle between the second flue 2 and the third flue 3 is 80 degrees; the length of the first flue 1 is 2 times of the width of the kiln, the length of the second flue 2 is 2 times of the width of the kiln, and the length of the third flue 3 is 8 times of the width of the kiln.
Example 5
A kiln 2: length 23.6m and width 7.5 m.
The first flue 1 is horizontally arranged, and the distance from the feeding end is 1/10 kiln length; the angle between the first flue 1 and the second flue 2 is 90 degrees, and the angle between the second flue 2 and the third flue 3 is 90 degrees; the length of the first flue 1 is 1 time of the width of the kiln, the length of the second flue 2 is 1.5 times of the width of the kiln, and the length of the third flue 3 is 5 times of the width of the kiln.
Example 6
A kiln 2: length 23.6m and width 7.5 m.
The first flue 1 is horizontally arranged, and the distance from the feeding end is 1/4 kiln length; the angle between the first flue 1 and the second flue 2 is 60 degrees, and the angle between the second flue 2 and the third flue 3 is 90 degrees; the length of the first flue 1 is 1.5 times of the width of the kiln, the length of the second flue 2 is 3 times of the width of the kiln, and the length of the third flue 3 is 10 times of the width of the kiln.
Test example
Energy consumption tests were performed on the existing flue structures of the kilns 1 and 2 and the flue structures of the above embodiments, respectively, and the test results are shown in table 1. Wherein, item 1 represents the energy consumption data of unit molten glass under the existing flue structure, and item 2 represents the energy consumption data of unit molten glass under the flue structure of the embodiments 1-6 of the invention.
TABLE 1
As can be seen from the data in Table 1, the energy consumption of unit molten glass can be greatly reduced by adopting the flue structure design of the invention.
In conclusion, the flue is arranged near the feeding end of the kiln, and the structural arrangement of the flue can achieve the effect of reducing energy consumption and ensure the stability of the pressure of the kiln; the exhaust device does not adopt a heat exchanger, and directly adopts an exhaust chimney structure, so that the required maintenance cost is reduced, the cost input is reduced, and the adverse effects on the product quality and the yield are eliminated.
It is to be noted that what has been included above in relation to a glass tank furnace flue structure of the invention can be implemented alone or in various combinations and these variants are within the scope of the invention.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A glass tank furnace flue structure is characterized by comprising a first flue (1), a second flue (2), a third flue (3) and an exhaust chimney (4); the glass tank furnace is a unit furnace;
the first flue (1) is communicated with a kiln, the second flue (2) is communicated with the first flue (1), the third flue (3) is communicated with the second flue (2), and the exhaust chimney (4) is communicated with the third flue (3);
wherein the first flue (1) is arranged close to the feeding end of the kiln, the first flue (1) and the second flue (2) are arranged at a first preset angle, and the second flue (2) and the third flue (3) are arranged at a second preset angle; the first predetermined angle is 45-90 degrees and the second predetermined angle is 45-90 degrees;
the distance between the first flue (1) and the feeding end is 0-1/4 kiln length;
the length of first flue (1) is 1/2 ~ 2 times kiln width, the length of second flue (2) is 1 ~ 3 times kiln width, the length of third flue (3) is 3 ~ 10 times kiln width.
2. The glass tank furnace flue structure as claimed in claim 1, wherein the distance between the first flue (1) and the feeding end is 0-1/6 furnace length.
3. The glass tank furnace flue structure as claimed in claim 2, wherein the distance between the first flue (1) and the feeding end is 0-1/8 furnace length.
4. The glass tank furnace chimney structure according to claim 1, wherein said first predetermined angle is 60-90 ° and said second predetermined angle is 60-90 °.
5. The glass tank furnace chimney structure of claim 4, wherein the first predetermined angle is 90 ° and the second predetermined angle is 90 °.
6. The glass tank furnace flue structure according to claim 1, wherein the first flue (1) is arranged horizontally.
7. The glass tank furnace flue structure according to claim 1, wherein the length of the first flue (1) is 1/2-1 times the furnace width, the length of the second flue (2) is 1-2 times the furnace width, and the length of the third flue (3) is 3-6 times the furnace width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710191841.9A CN108658432B (en) | 2017-03-28 | 2017-03-28 | Flue structure of glass tank furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710191841.9A CN108658432B (en) | 2017-03-28 | 2017-03-28 | Flue structure of glass tank furnace |
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| Publication Number | Publication Date |
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| CN108658432A CN108658432A (en) | 2018-10-16 |
| CN108658432B true CN108658432B (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710191841.9A Active CN108658432B (en) | 2017-03-28 | 2017-03-28 | Flue structure of glass tank furnace |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098072A (en) * | 1992-11-27 | 1995-02-01 | 菲尔金顿玻璃有限公司 | Flat glass furnace |
| CN201512474U (en) * | 2009-09-14 | 2010-06-23 | 江苏华尔润集团有限公司 | Float glass melting furnace |
-
2017
- 2017-03-28 CN CN201710191841.9A patent/CN108658432B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098072A (en) * | 1992-11-27 | 1995-02-01 | 菲尔金顿玻璃有限公司 | Flat glass furnace |
| CN201512474U (en) * | 2009-09-14 | 2010-06-23 | 江苏华尔润集团有限公司 | Float glass melting furnace |
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| CN108658432A (en) | 2018-10-16 |
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