Transverse flame glass kiln for improving combustion-supporting air temperature by utilizing kiln body heat dissipation
By setting up a closed area below the glass kiln body, the heat dissipation of the kiln body increases the combustion air temperature, the problem of the combustion air temperature being affected by the ambient temperature is solved, and the effect of reducing the energy consumption of the kiln and improving the thermal energy utilization rate is achieved.
Patent Information
- Application Number
- CN202422090137.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The combustion-assisted air temperature of existing glass kilns is greatly affected by the ambient temperature, resulting in high energy consumption and low thermal energy utilization. It is necessary to optimize the combustion-assisted air temperature to reduce the single consumption of the kiln.
By setting up a closed area below the kiln body, the kiln body is heat dissipated and absorbed air as a combustion air, increasing the combustion air temperature, and changing the combustion air entry method alternately to prevent the flame from burning the kiln wall.
It significantly increases the combustion-supporting air temperature, reduces the energy consumption and unit consumption of the kiln, improves the thermal energy utilization rate, optimizes the kiln operating environment, and extends the service life of the kiln.
Smart Images
Figure CN223002861U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cross-flame glass furnace that utilizes the heat dissipation of the furnace body to increase the temperature of the combustion-supporting air, belonging to the technical field of glass furnaces. Background Art
[0002] Glass melting furnaces are the thermal equipment that consumes the most fuel in glass factories, generally accounting for about 80-85% of the total energy consumption of the whole factory. Currently, the main energy sources used in the glass industry are fuels such as coal, oil, electricity, and natural gas. The energy consumption in glass production is mainly consumed during the glass melting process. The purpose of melting glass is to convert a variety of solid-phase batch materials into a single uniform glass liquid at high temperature. The average effective thermal energy utilization rate of glass furnaces is only 18-38%, while 82-62% cannot be effectively utilized.
[0003] The combustion-supporting air blower of the furnace is set on the ground outside the furnace. The combustion-supporting air of the furnace is taken from the atmosphere, which has a great impact on the air environmental temperature in spring, summer, autumn, and winter. The positions of the combustion-supporting air blowers of large float glass furnaces and photovoltaic glass furnaces are set on one side of the front end under the furnace. Like other blowers of the furnace (such as the furnace pool cooling blower), they take the surrounding air and generally do not install heating devices or other facilities. In this way, the change of environmental temperature will directly affect the inlet temperature of the combustion-supporting air. Similarly, the heat dissipated by the furnace is diluted in the surrounding air, resulting in great waste. During the combustion of the furnace, the combustion-supporting air enters the furnace through the regenerator for combustion support. The regenerators are arranged in pairs and symmetrically on both sides of the melting furnace. Their main function is to keep heat and store heat, preheat the passing combustion-supporting air, and save the fuel consumption of the furnace. When the combustion-supporting air passes through the regenerator, while the regenerator preheats and warms up the combustion-supporting air, the combustion-supporting air will also cool down the regenerator. Therefore, the temperature of the combustion-supporting air has a crucial impact on the unit consumption of the furnace. The higher the temperature of the combustion-supporting air, the smaller its cooling capacity for the regenerator, the higher the temperature of the combustion-supporting air entering the furnace, the weaker its cooling capacity for the furnace temperature, the better the combustion-supporting effect, and the lower the melting unit consumption of the furnace; conversely, when the temperature of the combustion-supporting air decreases, the cooling of the regenerator is strengthened, the temperature of the combustion-supporting air entering the furnace will decrease, and the unit consumption of the furnace will increase.
[0004] Optimizing and increasing the temperature of the combustion-supporting air can reduce the unit consumption of the furnace. Therefore, it is very necessary to optimize and solve the influence of temperature difference on the combustion-supporting air. Content of the Utility Model
[0005] According to the deficiencies in the above prior art, the technical problem to be solved by the utility model is: to provide a cross-flame glass furnace that utilizes the heat dissipation of the furnace body to increase the temperature of the combustion-supporting air, absorb and utilize the heat dissipated by the furnace body, increase the temperature of the combustion-supporting air, reduce energy consumption, and improve the thermal energy utilization rate.
[0006] A horizontal flame glass kiln which utilizes kiln body heat dissipation to increase combustion-supporting air temperature, wherein a left heat storage chamber and a right heat storage chamber are respectively arranged on both sides of the kiln body, a closed area is arranged below the kiln body and between the two heat storage chambers, a plurality of ventilation openings are reserved in the closed area, one end of a main induced draft duct is placed in the closed area, and the other end is connected to an air intake port of a combustion-supporting fan, an air outlet of the combustion-supporting fan is connected to a combustion-supporting air main pipe, and the combustion-supporting air main pipe is connected to the kiln body.
[0007] Due to the heat dissipation of the kiln itself, the temperature under the kiln is higher than the external environment temperature. The lower part of the kiln body is the glass melting pool (such as Figure 3 The combustion-supporting fan extracts the air in the closed area below the kiln through the main induced draft duct, and transports the air in the closed area into the kiln as the combustion-supporting air source, thereby greatly increasing the combustion-supporting air temperature.
[0008] Among them, the part of the main air duct placed in the closed area is provided with a plurality of air suction ports along its length direction, which can absorb heat from various places in the closed area, which is conducive to the full utilization of thermal energy.
[0009] The left and right sides of the combustion-supporting air main pipe of the utility model are respectively connected to the left heat storage chamber and the right heat storage chamber. The tops of the left and right heat storage chambers are connected to the kiln body, and the combustion-supporting air enters the kiln body through the heat storage chambers. The methods of conveying combustion-supporting air into the kiln body are as follows: the combustion-supporting air enters the kiln body from the right heat storage chamber to participate in combustion, and the smoke enters the left heat storage chamber from the kiln body and is discharged through the left main flue; after the flame is reversed, the combustion-supporting air enters the kiln body from the left heat storage chamber to participate in combustion, and the smoke enters the right heat storage chamber from the kiln body and is discharged through the right main flue. The combustion-supporting air enters the kiln body along the direction of the flame, so the above two methods are performed alternately. In this way, the flame can be prevented from continuously burning the kiln wall on one side of the kiln body, and the temperature of the kiln wall on one side is prevented from being too high, which affects the life of the kiln.
[0010] The utility model has a left main flue and a right main flue under the kiln body. The left main flue is provided with a plurality of left branch flues along its length, and the left main flue is connected to the bottom of the left regenerator through the plurality of left branch flues; the right main flue is provided with a plurality of right branch flues along its length, and the right main flue is connected to the bottom of the right regenerator through the plurality of right branch flues. The flue gas enters the flue after passing through the regenerator to retain a portion of the heat in the flue gas.
[0011] Specifically, a number of left combustion-supporting air branch pipes and right combustion-supporting air branch pipes are respectively arranged on the left and right sides of the combustion-supporting air main pipe along its length direction. The left combustion-supporting air branch pipe is connected to the left flue, and the right combustion-supporting air branch pipe is connected to the right flue. The combustion-supporting air main pipe transports combustion-supporting air to the left heat storage chamber and the right heat storage chamber through the left flue and the right flue respectively.
[0012] In addition, the left and right main flues converge and connect to the chimney at the end, and a waste heat power generation boiler is arranged at the convergence point. The heat that is not retained in the regenerator chamber in the flue gas will be reused through the waste heat power generation boiler, further improving the thermal energy utilization rate.
[0013] In the present utility model, a plurality of pool wall cooling air blow ports are provided on the outer side wall of the kiln body for cooling the pool wall of the kiln body, ensuring the normal operation of the kiln furnace and extending its service life. The pool wall cooling air blow ports face the outer side wall of the kiln body and are inclined downward. While cooling the pool wall, the heat of the pool wall is transferred to the enclosed area below the kiln body, further recovering the thermal energy.
[0014] Among them, a plurality of ventilation ports are provided in the enclosed area, and the positions of the ventilation ports correspond to the positions of the pool wall cooling air blow ports. The cooling air blown out from the pool wall cooling air blow ports enters the enclosed area below the kiln body through the ventilation ports after passing through the outer side wall of the kiln body.
[0015] The beneficial effects of the present utility model compared with the prior art are as follows:
[0016] 1. Improving the combustion-supporting air temperature and reducing energy consumption: By using the heat dissipated below the kiln body as the air source of the combustion-supporting air, the temperature of the combustion-supporting air is significantly increased. The increase in the combustion-supporting air temperature means that its cooling ability for the regenerator chamber is weakened, so the temperature of the combustion-supporting air entering the kiln is higher, the combustion-supporting effect is better, and thus the melting unit consumption of the kiln furnace is reduced.
[0017] 2. Improving the thermal energy utilization rate: The present utility model not only recovers and utilizes the heat dissipated below the kiln body, but also retains part of the heat in the flue gas through the regenerator chamber, and further recovers the remaining heat in the flue gas by using the waste heat power generation boiler, thus greatly improving the overall thermal energy utilization rate. Moreover, by arranging the pool wall cooling air blow ports, while effectively cooling the pool wall of the kiln body to ensure the normal operation of the kiln furnace, the heat of the cooling air blown out from the pool wall cooling air blow ports is recovered to the enclosed area below the kiln body after passing through the outer side wall of the kiln body, realizing the reuse of thermal energy.
[0018] 3. Optimizing the operation environment of the kiln furnace and enhancing the operation stability of the kiln furnace: By alternately changing the entry mode of the combustion-supporting air, the continuous burning of one side of the kiln wall by the flame in the kiln body is avoided, preventing the stable operation of the kiln furnace from being affected due to the too high temperature of one side of the kiln wall and improving the service life of the kiln furnace. Description of the Drawings
[0019] Figure 1 is a three-dimensional structural cross-sectional view of the glass kiln furnace of the present utility model;
[0020] Figure 2 is one of the overall structural schematic diagrams of the glass kiln furnace of the present utility model;
[0021] Figure 3It is a cross-sectional view of the planar structure of the glass furnace of the present utility model;
[0022] Figure 4 It is the second schematic diagram of the overall structure of the glass furnace of the present utility model;
[0023] In the figure: 1. Furnace body; 2. Left regenerator; 3. Right regenerator; 4. Closed area; 5. Main air duct; 51. Air suction port; 6. Main combustion air duct; 61. Left combustion air branch pipe; 62. Right combustion air branch pipe; 7. Left main flue; 71. Left branch flue; 8. Right main flue; 81. Right branch flue; 9. Combustion air blower; 10. Waste heat power generation boiler; 11. Chimney; 12. Damper valve; 13. Blow port for pool wall cooling air. Specific embodiments
[0024] The present utility model will be further described below in conjunction with specific embodiments.
[0025] However, the description of the present utility model is only an embodiment of the structural and even functional description, and the scope of the rights of the present utility model is not limited by the embodiments described in the text.
[0026] For example, multiple embodiments can have various changes and various forms, and it should be understood that the scope of the rights of the present utility model includes equivalents that can implement the technical idea.
[0027] Due to the heat dissipation of the furnace itself, the temperature under the furnace is higher than the external ambient temperature. The lower part of the furnace body 1 is a glass melting pool (as Figure 3 shown), so the heat dissipated by it will mostly concentrate in the space below the furnace body 1. Enclosing this space as the source of combustion air can greatly increase the temperature of the combustion air.
[0028] Such as Figures 1 to 4As shown in the figure, the cross-flame glass furnace that utilizes the heat dissipation of the kiln body to increase the temperature of the combustion-supporting air in this embodiment has a left regenerator 2 and a right regenerator 3 respectively arranged on both sides of the kiln body 1. The tops of the left regenerator 2 and the right regenerator 3 are both connected to the kiln body 1. A closed area 4 is arranged between the lower part of the kiln body and the two regenerators. The specific method is to build the kiln body 1 on the first floor, with the kiln bottom below the ground. Except for the daylighting and ventilation wells, the area under the kiln is in a fully sealed state; or build the kiln body 1 on the second floor and enclose the area around the kiln with doors, windows and workshops. One end of the main air duct 5 is placed into the closed area 4. Along the length direction of the part of the main air duct 5 placed in the closed area 4, a number of air inlets 51 are provided, and the air inlets 51 are evenly arranged according to the required air volume of the combustion-supporting air. The other end of the main air duct 5 is connected to the air inlet of the combustion-supporting air blower 9, and the air outlet of the combustion-supporting air blower 9 is connected to the main combustion-supporting air duct 6. A number of left combustion-supporting air branch ducts 61 and right combustion-supporting air branch ducts 62 are respectively arranged along the length direction on the left and right sides of the main combustion-supporting air duct 6. A left main flue 7 and a right main flue 8 are arranged below the kiln body 1. A number of left branch flues 71 are arranged along the length direction of the left main flue 7, and the left main flue 7 is connected to the bottom of the left regenerator 2 through a number of left branch flues 71; a number of right branch flues 81 are arranged along the length direction of the right main flue 8, and the right main flue 8 is connected to the bottom of the right regenerator 3 through a number of right branch flues 81. The left combustion-supporting air branch duct 61 is connected to the left branch flue 71, and the right combustion-supporting air branch duct 62 is connected to the right branch flue 81. The main combustion-supporting air duct 6 transports the combustion-supporting air to the left regenerator 2 and the right regenerator 3 respectively through the left branch flue 71 and the right branch flue 81.
[0029] The ends of the left main flue 7 and the right main flue 8 converge into the main flue, the main flue is connected to the chimney 11, a waste heat power generation boiler 10 is arranged in parallel on the main flue, and a gate valve 12 is arranged on the main flue. The flue gas generated by the furnace can be directly discharged from the chimney 11 through the main flue. The gate valve 12 on the main flue can also be closed, so that the flue gas passes through the waste heat power generation boiler 10 and then is discharged from the chimney 11. The utility model not only recovers and utilizes the heat dissipated under the kiln body 1, but also retains part of the heat in the flue gas through the regenerator, and further recovers the remaining heat in the flue gas by using the waste heat power generation boiler 10, thereby greatly improving the overall thermal energy utilization rate.
[0030] A plurality of pool wall cooling air blow ports 13 are arranged on the outer side wall of the kiln body 1, and the pool wall cooling air blow ports 13 face the outer side wall of the kiln body 1 and incline downward. A plurality of ventilation ports are provided in the closed area 4, and the positions of the ventilation ports correspond to the positions of the pool wall cooling air blow ports 13. The cooling air blown out by the pool wall cooling air blow ports 13 enters the closed area 4 under the kiln body 1 from the ventilation ports after passing through the outer side wall of the kiln body 1. By arranging the pool wall cooling air blow ports 13, while effectively cooling the pool wall of the kiln body 1 to ensure the normal operation of the furnace, the heat of the cooling air blown out by the pool wall cooling air blow ports 13 is recovered into the closed area 4 under the kiln body 1 after passing through the outer side wall of the kiln body 1, realizing the reuse of thermal energy.
[0031] The utility model closes the area below the kiln body 1 and between the two regenerators, and a ventilation opening is provided in the closed area 4. When the kiln furnace is operating, the heat dissipated from the kiln body 1 is concentrated in the closed area 4 below the kiln body 1. The combustion-supporting air blower 9 extracts the air in the closed area 4 below the kiln body 1 through the main air duct 5, and uses the air in the closed area 4 as the air source for the combustion-supporting air, so as to increase the temperature of the combustion-supporting air. The combustion-supporting air is transported into the kiln body 1 through the main combustion-supporting air duct 6 and one of the regenerators. The flue gas generated by the kiln body 1 is discharged from the chimney 11 through the flue from the other regenerator. Among them, the way of transporting the combustion-supporting air into the kiln body 1 is divided into: the combustion-supporting air enters the kiln body 1 from the right regenerator 3 through the main combustion-supporting air duct 6 to participate in combustion, and the flue gas enters the left regenerator 2 from the kiln body 1 and is discharged through the left main flue 7 and the chimney 11 (at this time, the passage of the main combustion-supporting air duct 6 to the left regenerator 2 is closed, and the right main flue 8 is closed); after the flame is reversed, the combustion-supporting air enters the kiln body 1 from the left regenerator 2 through the main combustion-supporting air duct 6 to participate in combustion, and the flue gas enters the right regenerator 3 from the kiln body 1 and is discharged through the right main flue 8 and the chimney 11 (at this time, the passage of the main combustion-supporting air duct 6 to the right regenerator 3 is closed, and the left main flue 7 is closed); the two ways are carried out alternately. By alternately changing the way of the combustion-supporting air entering, the continuous burning of one side of the kiln wall by the flame in the kiln body is avoided, and the stable operation of the kiln furnace is prevented from being affected due to the too high temperature of one side of the kiln wall.
[0032] The utility model uses the heat dissipated below the kiln body 1 as the air source for the combustion-supporting air, so that the heat absorbed and the normal heat dissipation of the kiln furnace reach a balance. It not only absorbs the heat normally dissipated by the kiln furnace and participates in the combustion-supporting air, raises the temperature of the combustion-supporting air, reduces the fuel consumption of the kiln furnace, but also does not affect the production of the kiln furnace.
[0033] Certainly, the above content is only the preferred embodiment of the utility model and cannot be considered as limiting the scope of the embodiments of the utility model. The utility model is not limited to the above examples. Equivalent changes and improvements made by those of ordinary skill in the art within the essence of the utility model shall fall within the scope covered by the patent of the utility model.
Claims
1. A horizontal flame glass kiln that utilizes kiln body heat dissipation to increase the combustion air temperature, characterized in that: A left heat storage chamber (2) and a right heat storage chamber (3) are respectively arranged on both sides of the kiln body (1); a closed area (4) is arranged below the kiln body and between the two heat storage chambers; a plurality of ventilation openings are reserved in the closed area (4); one end of a main air duct (5) is placed in the closed area (4); the other end is connected to the air intake of a combustion-supporting fan (9); the air outlet of the combustion-supporting fan (9) is connected to a combustion-supporting air main pipe (6); and the combustion-supporting air main pipe (6) is connected to the kiln body (1).
2. The horizontal flame glass kiln for increasing the combustion air temperature by utilizing kiln body heat dissipation according to claim 1, characterized in that: The portion of the main air duct (5) placed in the closed area (4) is provided with a plurality of air suction ports (51) along its length direction.
3. The horizontal flame glass kiln for increasing the combustion-supporting air temperature by utilizing kiln body heat dissipation according to claim 1 or 2, characterized in that: The left and right sides of the combustion-supporting air main pipe (6) are respectively connected to the left heat storage chamber (2) and the right heat storage chamber (3), and the tops of the left heat storage chamber (2) and the right heat storage chamber (3) are both connected to the kiln body (1).
4. The horizontal flame glass kiln for increasing the combustion-supporting air temperature by utilizing kiln body heat dissipation according to claim 3, characterized in that: A left main flue (7) and a right main flue (8) are provided below the kiln body (1); the left main flue (7) is provided with a plurality of left branch flues (71) along its length direction, and the left main flue (7) is connected to the bottom of the left regenerator (2) through the plurality of left branch flues (71); the right main flue (8) is provided with a plurality of right branch flues (81) along its length direction, and the right main flue (8) is connected to the bottom of the right regenerator (3) through the plurality of right branch flues (81).
5. The horizontal flame glass kiln for increasing the combustion-supporting air temperature by utilizing kiln body heat dissipation according to claim 4, characterized in that: A plurality of left combustion-supporting air branch pipes (61) and right combustion-supporting air branch pipes (62) are respectively arranged on the left and right sides of the combustion-supporting air main pipe (6) along the length direction thereof; the left combustion-supporting air branch pipe (61) is connected to the left branch flue (71), and the right combustion-supporting air branch pipe (62) is connected to the right branch flue (81); the combustion-supporting air main pipe (6) transports the combustion-supporting air to the left heat storage chamber (2) and the right heat storage chamber (3) through the left branch flue (71) and the right branch flue (81), respectively.
6. The horizontal flame glass kiln for increasing the combustion-supporting air temperature by utilizing kiln body heat dissipation according to claim 4 or 5, characterized in that: The ends of the left main flue (7) and the right main flue (8) are joined and connected to a chimney (11), and a waste heat power generation boiler (10) is provided at the joining point.
7. The horizontal flame glass kiln for increasing the combustion-supporting air temperature by utilizing kiln body heat dissipation according to claim 1, characterized in that: The outer side wall of the kiln body (1) is provided with a plurality of pool wall cooling air blowing ports (13), and the pool wall cooling air blowing ports (13) face the outer side wall of the kiln body (1) and are inclined downward.
8. The horizontal flame glass kiln for increasing the combustion-supporting air temperature by utilizing kiln body heat dissipation according to claim 7, characterized in that: The position of the vent corresponds to the position of the cooling air blowing port (13) on the pool wall. The cooling air blown out of the cooling air blowing port (13) on the pool wall passes through the outer wall of the kiln body (1) and then enters the closed area (4) below the kiln body (1) from the vent.