CN114133131A - A cross-flame glass melting furnace with waste heat recovery function of flue gas and its working method - Google Patents
A cross-flame glass melting furnace with waste heat recovery function of flue gas and its working method Download PDFInfo
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- CN114133131A CN114133131A CN202111620402.8A CN202111620402A CN114133131A CN 114133131 A CN114133131 A CN 114133131A CN 202111620402 A CN202111620402 A CN 202111620402A CN 114133131 A CN114133131 A CN 114133131A
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- flue gas
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- spray gun
- flue
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000003546 flue gas Substances 0.000 title claims abstract description 76
- 238000002844 melting Methods 0.000 title claims abstract description 48
- 230000008018 melting Effects 0.000 title claims abstract description 48
- 239000011521 glass Substances 0.000 title claims abstract description 38
- 239000002918 waste heat Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000011084 recovery Methods 0.000 title claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 80
- 239000007921 spray Substances 0.000 claims abstract description 64
- 239000007789 gas Substances 0.000 claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 47
- 239000007924 injection Substances 0.000 claims abstract description 47
- 239000000446 fuel Substances 0.000 claims abstract description 32
- 210000000481 breast Anatomy 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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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
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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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a transverse flame glass melting furnace with a smoke waste heat recovery function and a working method thereof, and belongs to the technical field of glass melting furnaces. One end of the kiln pool in the length direction is provided with a feed inlet, and the other end of the kiln pool is provided with a liquid flowing hole; a plurality of flame nozzles are arranged on the breast wall on one side of the longitudinal axis of the kiln pool, and a plurality of flue gas outlets are correspondingly arranged on the breast wall on the other side; the flame nozzles and the flue gas outlets are sequentially distributed from the highest stage to the last stage to two sides along the transverse axis of the kiln pool; the highest-level flame nozzle is provided with a combustion spray gun, and the rest flame nozzles are provided with jet heat pumps; the upper stage flue gas outlet is connected with the first inlet of the lower stage injection heat pump through a flue, and the second inlets of all the injection heat pumps are connected with a combustion spray gun; the combustion-supporting gas source is connected with a combustion spray gun after exchanging heat with the flue gas from the final stage flue gas outlet through a dividing wall heat exchanger, and a fuel supply system is connected with the combustion spray gun. The invention can repeatedly utilize the flue gas, reduce heat loss, save energy and protect environment.
Description
Technical Field
The invention belongs to the technical field of glass melting furnaces, and particularly relates to a transverse flame glass melting furnace with a smoke waste heat recovery function and a working method thereof.
Background
The glass melting furnace is a key thermal equipment for glass production. With the rapid development of the glass industry and the continuous improvement of the quality of refractory materials, the melting temperature of glass is higher and higher, some of the glass is close to 1600 ℃, and the production scale is continuously enlarged. Glass melting is an important link of energy consumption in the glass production process. With the energy shortage in the world, energy conservation and emission reduction have been paid attention to governments of various countries. At present, how to improve the energy utilization rate of glass production enterprises becomes an important development direction of glass production.
The traditional transverse flame type glass melting furnace is glass melting equipment with a dividing wall heat exchanger, and the working principle of the traditional transverse flame type glass melting furnace is as follows: the combustion air preheated in the partition wall heat exchanger rises from the partition wall heat exchanger, meets the injected fuel at the outlet of the small furnace, and then is combusted in the flame space. The flue gas is led out from the opposite small furnace, downwards enters the dividing wall heat exchanger, passes through the checker bricks in the dividing wall heat exchanger, and then enters the exhaust chimney through the reversing system. Different furnaces reverse the flame every 20 minutes or 25 minutes. At this point, the combustion air rises through the opposite heated lattice body, and the flame traverses the melting bath in the opposite direction. The fuel is completely combusted in the flame space, the chemical energy of the fuel is converted into heat energy through combustion reaction, and the heat energy is transferred to molten glass, a breast wall and a crown so as to ensure that the heat energy required by the melting process is supplied. Thus, the furnace is also a combustion device and a heat transfer device.
The temperature of the flue gas discharged by the glass melting furnace is as high as about 1400 ℃, a large amount of heat energy can be wasted when the flue gas is directly discharged into the atmosphere, and the high-temperature waste gas can pollute the environment. Even utilize the exhaust flue gas to preheat follow-up combustion air, exhaust temperature is also at 400 ~ 500 degrees, still takes away a large amount of heats to the efficiency of next door heat exchanger is poor, and the cost is high, and operational reliability is relatively poor.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a transverse flame glass melting furnace with a smoke waste heat recovery function and a working method thereof, the structural design is reasonable, high-temperature smoke can be repeatedly utilized, the heat loss caused by the discharged smoke is reduced, the energy-saving effect is good, the pollution of high-temperature waste gas to the environment is reduced, the requirement on the heat transfer area of a dividing wall heat exchanger is greatly reduced, and the building material consumption of the melting furnace is reduced.
The invention is realized by the following technical scheme:
the invention discloses a cross-flame glass melting furnace with a smoke waste heat recovery function, which comprises a furnace tank, a dividing wall heat exchanger, a combustion-supporting gas source, a fuel supply system, a combustion spray gun and an injection heat pump, wherein the furnace tank is provided with a furnace inlet and a furnace outlet; one end of the kiln pool in the length direction is provided with a feed inlet, and the other end of the kiln pool is provided with a liquid flowing hole; a plurality of flame nozzles are arranged on the breast wall on one side of the longitudinal axis of the kiln pool, and a plurality of flue gas outlets are correspondingly arranged on the breast wall on the other side; the flame nozzles and the flue gas outlets are sequentially distributed from the highest stage to the last stage to two sides along the transverse axis of the kiln pool; the highest-level flame nozzle is provided with a combustion spray gun, and the rest flame nozzles are provided with jet heat pumps; the upper stage flue gas outlet is connected with the first inlet of the lower stage injection heat pump through a flue, and the second inlets of all the injection heat pumps are connected with a combustion spray gun; the final stage flue gas outlet is communicated with a hot side inlet of the dividing wall heat exchanger, the combustion-supporting gas source is respectively connected with the combustion-supporting gas inlet of each combustion spray gun after heat exchange is carried out on the cold side of the dividing wall heat exchanger, and the fuel supply system is respectively connected with the fuel inlet of each combustion spray gun.
Preferably, the combustion-supporting gas source is connected with a combustion-supporting gas main pipe, the combustion-supporting gas main pipe is respectively connected with the combustion-supporting gas inlet of each combustion spray gun through a branch pipe, and each branch pipe is provided with a valve.
Preferably, the fuel supply system is connected with a fuel supply main pipe, the fuel supply main pipe is respectively connected with the fuel inlet of each combustion spray gun through a branch pipe, and each branch pipe is provided with a valve.
Preferably, the partition wall heat exchanger is in a plurality, and the cold side of each partition wall heat exchanger is connected with the combustion-supporting gas source independently or simultaneously.
Preferably, a valve is arranged on the flue.
Preferably, the flue is disposed below a roof of the melting furnace.
Further preferably, the flue is a bent pipe and is matched with the radian of the kiln top.
Preferably, the flame nozzles and the flue gas outlets on two sides of the transverse axis of the kiln pool are symmetrically distributed.
Preferably, the flue gas outlet is provided with a deflector.
The invention discloses a working method of the transverse flame glass melting furnace with the function of recovering the waste heat of flue gas, which comprises the following steps:
the flame is sprayed out by the combustion spray gun at the highest-level flame spray opening to heat the glass raw material in the kiln pool, the generated flue gas is discharged from the flue gas outlet at the opposite side and is introduced into the next-level injection heat pump through the flue, the high-temperature and high-pressure flame generated by the combustion spray gun connected with the injection heat pump enters the injection heat pump, is mixed with the introduced flue gas and then enters the upper part of the kiln pool to be fully combusted, and the requirement of the temperature rise process at the section of the kiln pool is met; after the flue gas is utilized step by step, the flue gas enters the dividing wall heat exchanger from the last stage flue gas outlet to preheat the combustion-supporting gas and then is discharged.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a cross-flame glass melting furnace with a flue gas waste heat recovery function, which has reasonable structural design, and aims at the structural characteristics of the cross-flame glass melting furnace, flame nozzles and flue gas outlets are sequentially arranged from the highest stage to the last stage along the transverse axis of a furnace tank to two sides, combustion spray guns except the flame nozzles at the highest stage are not provided with injection heat pumps, other combustion spray guns are connected with injection heat pumps, the flue gas is guided to enter a flue along the flue gas outlet by the vacuum degree generated by the injection heat pumps, combustion-supporting gas and fuel in the combustion spray guns connected with the injection heat pumps are mixed and then enter the injection heat pumps to be mixed with the introduced flue gas, and then the mixed gas enters the upper part of the furnace tank for sufficient combustion, so that the temperature rise process requirement of the section of the furnace tank is met; the flue gas is utilized step by step according to the process until the flue gas enters the dividing wall heat exchanger from the last stage flue gas outlet to preheat the combustion-supporting gas and then is discharged. The melting furnace can be used for multiple times, so that the heat loss caused by the discharged flue gas is reduced, the melting furnace has a good energy-saving effect, and the pollution of high-temperature waste gas to the environment is reduced; meanwhile, the requirement of the heat transfer area of the dividing wall heat exchanger is greatly reduced, and the building material consumption of the melting furnace is reduced.
Furthermore, the combustion-supporting gas is transmitted through the combustion-supporting gas main pipe, and the combustion-supporting gas quantity entering each combustion spray gun is regulated in real time through the branch pipe and the valve arranged on the branch pipe, so that the temperature of each area in the melting furnace is controlled.
Furthermore, the fuel is transmitted through the fuel supply main pipe, and the fuel quantity entering each combustion spray gun is adjusted in real time through the branch pipe and the valve arranged on the branch pipe, so that the temperature of each area in the melting furnace is controlled.
Furthermore, the dividing wall heat exchangers are multiple, the combustion-supporting gas can be preheated independently or simultaneously, the dividing wall heat exchangers can be arranged according to the process and the actual production needs, and the flexibility is high.
Furthermore, a valve is arranged on the flue, so that the flow and the pressure difference of the flue gas can be controlled.
Furthermore, the flue is arranged below the kiln top of the melting kiln, so that heat can be utilized while the heat dissipation capacity of the kiln body can be reduced.
Furthermore, the flue is a bent pipe matched with the radian of the kiln top, so that the fluidity is good, and the convection heat exchange area can be increased.
Furthermore, the flame nozzles and the flue gas outlets on two sides of the transverse axis of the kiln pool are symmetrically distributed, so that the temperature in the kiln pool can be controlled and adjusted in a grading manner.
Furthermore, the smoke outlet is provided with a guide plate, so that forced flow guide can be performed on smoke, and the grading utilization effect of the smoke is enhanced.
The working method of the transverse flame glass melting furnace with the smoke waste heat recovery function, disclosed by the invention, can be used for carrying out step-by-step gradient utilization on smoke, reducing heat loss caused by smoke discharge, saving fuel and reducing operation cost; the pollution caused by directly discharging high-temperature flue gas is avoided; meanwhile, the requirement of the heat transfer area of the dividing wall heat exchanger is greatly reduced, and the floor area and the construction cost of the melting furnace are reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic elevational view of a fourth combustion lance in accordance with an embodiment of the present invention;
FIG. 3 is a schematic elevational view of a third combustion lance in accordance with an embodiment of the present invention;
FIG. 4 is a schematic elevational view of a second combustion lance in accordance with an embodiment of the present invention;
FIG. 5 is a schematic elevational view of the first combustion lance in an embodiment of the present invention.
In the figure: 1 is a kiln pool, 2 is a first combustion-supporting gas source, 3 is a first dividing wall heat exchanger, 4 is a feed inlet, 5 is a first injection heat pump, 6 is a first combustion spray gun, 7 is a first valve, 8 is a second valve, 9 is a second combustion spray gun, 10 is a second injection heat pump, 11 is a third injection heat pump, 12 is a third combustion spray gun, 13 is a third valve, 14 is a fourth valve, 15 is a fourth combustion spray gun, 16 is a fifth combustion spray gun, 17 is a fifth valve, 18 is a sixth valve, 19 is a sixth combustion spray gun, 20 is a fourth injection heat pump, 21 is a fifth injection heat pump, 22 is a seventh combustion spray gun, 23 is a seventh valve, 24 is an eighth valve, 25 is an eighth combustion spray gun, 26 is a sixth injection heat pump, 27 is a throat, 28 is a second dividing wall heat exchanger, 29 is a second combustion-supporting gas source, 30 is a sixth flue, 31 is a fifth flue, 32 is a fourth flue, 33 is a third flue, 34 is a second flue, 35 is a first flue, and 36 is a combustion-supporting gas main pipe.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific embodiments:
the invention discloses a transverse flame glass melting furnace with a smoke waste heat recovery function, which comprises a furnace tank 1, a dividing wall heat exchanger, a combustion-supporting gas source, a fuel supply system, a combustion spray gun and an injection heat pump, wherein the furnace tank is provided with a gas inlet and a gas outlet; one end of the kiln pool 1 in the length direction is provided with a feed port 4, and the other end is provided with a liquid flowing hole 27; a plurality of flame nozzles are arranged on the breast wall at one side of the longitudinal axis of the kiln pool 1, and a plurality of flue gas outlets are correspondingly arranged on the breast wall at the other side; the flame nozzles and the flue gas outlets are sequentially arranged from the highest stage to the last stage to two sides along the transverse axis of the kiln pool 1; the highest-level flame nozzle is provided with a combustion spray gun, and the rest flame nozzles are provided with jet heat pumps; the upper stage flue gas outlet is connected with the first inlet of the lower stage injection heat pump through a flue, and the second inlets of all the injection heat pumps are connected with a combustion spray gun; the last stage smoke outlet is communicated with a hot side inlet of the dividing wall heat exchanger, and a smoke discharge pipe is connected with a hot side outlet of the dividing wall heat exchanger and used smoke is discharged out of the melting furnace system; the combustion-supporting gas source is respectively connected with the combustion-supporting gas inlet of each combustion spray gun after heat exchange is carried out on the cold side of the dividing wall heat exchanger, and the fuel supply system is respectively connected with the fuel inlet of each combustion spray gun.
In a preferred embodiment of the present invention, the combustion-supporting gas source is connected to a combustion-supporting gas main pipe 36, the combustion-supporting gas main pipe 36 is respectively connected to the combustion-supporting gas inlet of each combustion spray gun through a branch pipe, and each branch pipe is provided with a valve.
In a preferred embodiment of the invention, the fuel supply system is connected to a fuel supply main, which is connected to the fuel inlet of each combustion lance by a branch pipe, each branch pipe being provided with a valve.
In a preferred embodiment of the invention, the partition heat exchanger is in plurality, and the cold side of each partition heat exchanger is connected to the combustion-supporting gas source separately or simultaneously.
In a preferred embodiment of the invention, each flue is provided with a valve.
In a preferred embodiment of the invention, the flue is arranged below the roof of the melting furnace. Preferably, the flue is a bent pipe and matches the radian of the kiln top.
In a preferred embodiment of the invention, the flame nozzles and the flue gas outlets on both sides of the transverse axis of the kiln 1 are symmetrically distributed.
In a preferred embodiment of the invention, the flue gas outlet is provided with a deflector.
The invention is further illustrated below in a specific embodiment:
fig. 1 is a schematic view of the overall structure of the present embodiment, and the interior of the melting furnace is symmetrically divided into a left area and a right area according to the distribution of the temperature curve of the interior of the melting furnace, wherein the two areas are low at two ends and high in the middle, and the working principles of the left area and the right area are the same. The first combustion-supporting gas source 2 is directly connected with the first dividing wall heat exchanger 3 through a pipeline, the second combustion-supporting gas source 29 is directly connected with the second dividing wall heat exchanger 28 through a pipeline, and the pressure and the flow of the first combustion-supporting gas source 2 and the second combustion-supporting gas source 29 meet the process requirements of all spray guns. The first dividing wall heat exchanger 3 and the second dividing wall heat exchanger 28 are connected with a combustion-supporting gas main pipe 36, and the first combustion spray gun 6, the second combustion spray gun 9, the third combustion spray gun 12, the fourth combustion spray gun 15, the fifth combustion spray gun 16, the sixth combustion spray gun 19, the seventh combustion spray gun 22 and the eighth combustion spray gun 25 are connected in parallel on the combustion-supporting gas main pipe 36 through a first valve 7, a second valve 8, a third valve 13, a fourth valve 14, a fifth valve 17, a fifth valve 18, a seventh valve 23 and an eighth valve 24 in sequence. The heat flow inlets of the first partition wall heat exchanger 3 and the second partition wall heat exchanger 28 are respectively connected with the final stage flue gas outlets at the left side and the right side of the kiln pool 1. The fourth and fifth combustion lances 15 and 16 correspond to the flame ports and flue gas outlets of the two highest stages, and are respectively degraded to the first and eighth combustion lances 6 and 25 toward the left and right sides as the last stage. And the highest-temperature first-stage combustion spray gun is not additionally provided with an injection heat pump, and the number of the highest stages in each area is determined according to the temperature distribution curve in the actual kiln. As shown in fig. 2, the outlets of the fourth combustion lance 15 and the fifth combustion lance 16 are directly opposite to the flame ports of the highest stage; as shown in fig. 3, the third combustion spray gun 12 is connected with the third injection heat pump 11, and the highest-level flue gas outlet is connected with the third injection heat pump 11 through the third flue 33; the sixth combustion spray gun 19 is connected with the fourth injection heat pump 20, and the other highest-level flue gas outlet is connected with the fourth injection heat pump 20 through a fourth flue 32. As shown in fig. 4, the second combustion spray gun 9 is connected with the second injection heat pump 10, and the secondary flue gas outlet is connected with the second injection heat pump 10 through the second flue 34; the seventh combustion spray gun 22 is connected with the fifth injection heat pump 21, and the other secondary flue gas outlet is connected with the fifth injection heat pump 21 through a fifth flue 31. As shown in fig. 5, the first combustion spray gun 6 is connected with the first injection heat pump 5, and the second-stage flue gas outlet is connected with the first injection heat pump 5 through the first flue 35; the eighth combustion spray gun 25 is connected with the sixth injection heat pump 26, and the other secondary flue gas outlet is connected with the sixth injection heat pump 26 through a sixth flue 30. The fourth combustion spray gun 15 and the fifth combustion spray gun 16 mix fuel and combustion-supporting gas and then burn to generate flame, the flame enters the melting tank through the fire-jet, most of heat is absorbed by the raw materials in the kiln, the smoke carrying part of heat enters the third flue 33 and the fourth flue 32 corresponding to the discharge port from the discharge port, and is respectively injected into the third injection heat pump 11 and the fourth injection heat pump 20 fixed at the next-stage fire-jet, and the smoke is boosted and heated and then enters the melting tank for full combustion, the temperature meets the process requirement of the section, and the raw materials are heated; the ejection working media of the third ejection heat pump 11 and the fourth ejection heat pump 20 are respectively a mixture of fuel and combustion-supporting gas ejected by the third combustion spray gun 12 and the sixth combustion spray gun 19; flue gas generated by the first-stage combustion respectively passes through the second flue 34 and the fifth flue 31 and then enters the second injection heat pump 10 and the fifth injection heat pump 21 of the next stage with lower temperature, then the working principle of the previous stage is repeated to the final stage, flame sprayed by the first injection heat pump 5 and the sixth injection heat pump 26 dissipates heat above the melting tank, the flue gas carrying a part of heat is guided into the first partition wall heat exchanger 3 and the second partition wall heat exchanger 28 to preheat combustion-supporting gas, the preheated combustion-supporting gas is conveyed to each combustion spray gun through the combustion-supporting gas main pipe 36, the flue gas quantity guided into the combustion spray guns is controlled through each valve, and the flue gas quantity required by each area is controlled according to the temperature distribution curve in the kiln.
It should be noted that the embodiment described in the example is only a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that several modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should be construed as the protection scope of the present invention.
Claims (10)
1. A transverse flame glass melting furnace with a flue gas waste heat recovery function is characterized by comprising a furnace tank (1), a dividing wall heat exchanger, a combustion-supporting gas source, a fuel supply system, a combustion spray gun and an injection heat pump; one end of the kiln pool (1) in the length direction is provided with a feed inlet (4), and the other end is provided with a liquid flowing hole (27); a plurality of flame nozzles are arranged on the breast wall at one side of the longitudinal axis of the kiln pool (1), and a plurality of flue gas outlets are correspondingly arranged on the breast wall at the other side; the flame nozzles and the flue gas outlets are sequentially arranged from the highest stage to the last stage to two sides along the transverse axis of the kiln pool (1); the highest-level flame nozzle is provided with a combustion spray gun, and the rest flame nozzles are provided with jet heat pumps; the upper stage flue gas outlet is connected with the first inlet of the lower stage injection heat pump through a flue, and the second inlets of all the injection heat pumps are connected with a combustion spray gun; the final stage flue gas outlet is communicated with a hot side inlet of the dividing wall heat exchanger, the combustion-supporting gas source is respectively connected with the combustion-supporting gas inlet of each combustion spray gun after heat exchange is carried out on the cold side of the dividing wall heat exchanger, and the fuel supply system is respectively connected with the fuel inlet of each combustion spray gun.
2. The cross-flame glass melting furnace with the function of recovering the waste heat of the flue gas as claimed in claim 1, wherein the combustion-supporting gas source is connected with a combustion-supporting gas main pipe (36), the combustion-supporting gas main pipe (36) is respectively connected with the combustion-supporting gas inlet of each combustion spray gun through a branch pipe, and a valve is arranged on each branch pipe.
3. The glass melting furnace with the function of recovering the waste heat of the flue gas as recited in claim 1, wherein the fuel supply system is connected with a fuel supply main pipe, the fuel supply main pipe is respectively connected with the fuel inlet of each combustion lance through a branch pipe, and each branch pipe is provided with a valve.
4. The cross-flame glass melting furnace with the function of recovering the waste heat of the flue gas as claimed in claim 1, wherein the partition wall heat exchangers are multiple, and the cold side of each partition wall heat exchanger is connected with a combustion-supporting gas source independently or simultaneously.
5. The cross-flame glass melting furnace with the function of recovering the waste heat of the flue gas as recited in claim 1, wherein a valve is arranged on the flue.
6. The cross-flame glass melting furnace with the function of recovering waste heat of flue gas as recited in claim 1, wherein the flue is arranged below the top of the melting furnace.
7. The cross-flame glass melting furnace with the function of recovering the waste heat of the flue gas as recited in claim 6, wherein the flue is a bent pipe and is matched with the radian of the top of the furnace.
8. The cross-flame glass melting furnace with the function of recovering the waste heat of the flue gas as claimed in claim 1, wherein the flame nozzles and the flue gas outlets on both sides of the transverse axis of the furnace tank (1) are symmetrically distributed.
9. The cross-flame glass melting furnace with the function of recovering the waste heat of the flue gas as recited in claim 1, wherein the flue gas outlet is provided with a guide plate.
10. The method for operating a cross-flame glass melting furnace with a flue gas waste heat recovery function according to any one of claims 1 to 9, comprising:
the flame is sprayed out by a combustion spray gun at the highest-level flame spray opening, the glass raw material in the kiln pool (1) is heated, the generated flue gas is discharged from a flue gas outlet at the opposite side and is introduced into a next-level injection heat pump through a flue, the combustion-supporting gas and the fuel in the combustion spray gun connected with the injection heat pump are mixed and then enter the injection heat pump, and the mixed gas and the introduced flue gas enter the upper part of the kiln pool (1) for sufficient combustion, so that the temperature rise process requirement of the section of the kiln pool (1) is met; after the flue gas is utilized step by step, the flue gas enters the dividing wall heat exchanger from the last stage flue gas outlet to preheat the combustion-supporting gas and then is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620402.8A CN114133131A (en) | 2021-12-27 | 2021-12-27 | A cross-flame glass melting furnace with waste heat recovery function of flue gas and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620402.8A CN114133131A (en) | 2021-12-27 | 2021-12-27 | A cross-flame glass melting furnace with waste heat recovery function of flue gas and its working method |
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| CN114133131A true CN114133131A (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111620402.8A Withdrawn CN114133131A (en) | 2021-12-27 | 2021-12-27 | A cross-flame glass melting furnace with waste heat recovery function of flue gas and its working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115677177A (en) * | 2022-11-23 | 2023-02-03 | 河北南玻玻璃有限公司 | Glass melting furnace system |
-
2021
- 2021-12-27 CN CN202111620402.8A patent/CN114133131A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115677177A (en) * | 2022-11-23 | 2023-02-03 | 河北南玻玻璃有限公司 | Glass melting furnace system |
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