CN113531527A - High-efficient heat exchanger and combustor of gas radiant tube - Google Patents
High-efficient heat exchanger and combustor of gas radiant tube Download PDFInfo
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- CN113531527A CN113531527A CN202110706957.8A CN202110706957A CN113531527A CN 113531527 A CN113531527 A CN 113531527A CN 202110706957 A CN202110706957 A CN 202110706957A CN 113531527 A CN113531527 A CN 113531527A
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 66
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000003546 flue gas Substances 0.000 claims abstract description 60
- 239000002737 fuel gas Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 22
- 238000010992 reflux Methods 0.000 claims description 20
- 210000005239 tubule Anatomy 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/66—Preheating the combustion air or gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The invention relates to a high-efficiency heat exchanger of a fuel gas radiant tube, one end of a shell is closed, the other end of the shell is open, the closed end of the shell is provided with a combustion air outlet pipe, the open end of the shell extends to the inside of the U-shaped radiant tube, the center of the shell is provided with a coaxial central air heat exchange tube, one end of the central air heat exchange tube is connected with the combustion air outlet pipe, the other end of the central air heat exchange tube extends to the open end of the shell, the heat exchange thin tubes are connected with the plugging spherical crown in a through mode, the heat exchange thin tubes are arranged in a plurality of concentric circles and are connected with the plugging spherical crown in a through mode, the inlet ends of the heat exchange thin tubes are connected with a combustion air inlet end plate in the shell, baffle plates are arranged between the heat exchange thin tubes, the side of each heat exchange thin tube of the combustion air inlet end plate on the shell is connected with a flue gas discharge pipe, the other side of the combustion air inlet end plate is connected with a combustion air inlet pipe, and a flue gas backflow device is arranged on the opposite side of each flue gas discharge pipe and connected with the combustion air outlet pipe. The effective heat exchange area is increased, and the heat exchange efficiency is improved.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a high-efficiency heat exchanger of a gas radiation tube and a burner.
Background
The gas radiant tube heater heats the radiant tube by using high-temperature flue gas generated by the radiant tube burner, and then transfers heat to a product by using the radiant tube, so that the product is indirectly heated. Along with the continuous improvement of product quality and performance requirements, the indirect heating technology of the radiant tube is more and more widely applied to the field of industrial heat treatment furnaces, and under the dual pressure of energy and environmental protection, the indirect heating technology of the radiant tube further improves the combustion efficiency of the radiant tube, improves the recovery capability of flue gas waste heat, reduces energy consumption and reduces pollution emission, and is the development direction of radiant tube heaters.
The radiant tube heat exchanger is one of important parts of a radiant tube, and has the functions of preheating combustion air, recovering waste heat of flue gas, increasing the temperature of the combustion air, improving the combustion state of fuel gas and reducing the emission temperature of the flue gas. Therefore, the performance of the heat exchanger directly influences the heat efficiency, the heating quality of the product and the energy-saving and emission-reducing effects of the radiant tube.
At present, a plurality of achievements exist in the research on the radiant tube heat exchanger at home and abroad. For example, the Chinese patent is used for a high-efficiency heat exchanger CN201510532471.1 of a non-self-preheating gas burner type radiant tube, the invention discloses the high-efficiency heat exchanger for the non-self-preheating gas burner type radiant tube, and through on-site installation and debugging of the high-efficiency heat exchanger of the gas burner type radiant tube, the flue gas flow distribution and the entrainment circulating flue gas volume in the heat exchanger are optimized, the high-efficiency operation of the heat exchanger is realized, and the flue gas waste heat recovery efficiency is improved. But the problems of complex structure and low heat exchange specific surface area of the heat exchanger exist.
Like chinese utility model a counterflow radiant tube heat exchanger application number is CN201621090980.X, this utility model characterized in that: combustion-supporting air enters the heat exchanger from the inlet, flows between the inner sleeve and the inner fins of the heat exchanger through the newly-added gas distributor, returns back at the end socket of the heat exchanger, enters the inner sleeve of the heat exchanger, flows to the gas distributor rapidly, is sprayed out through the nozzle, and flows out from the combustion-supporting air outlet of the heat exchanger together with part of waste gas to enter the burner; the utility model discloses an advantage can effectively improve heat exchanger heat exchange efficiency, the energy saving. But the heat exchanger has the problem of low heat exchange specific surface area.
Like chinese utility model patent a jet flow heat transfer U type coal gas radiant tube, application number is 96218797.6, and this technique has improved combustion air preheating's heat exchange efficiency effectively through the secondary heat transfer in jet flow heat transfer and the exhaust pipe, but combustion air flow resistance is big, the heat exchanger volume is great, brings certain difficulty for field installation and production operation, does not see the application report in actual production.
If the chinese utility model patent discloses an air whirl sprays radiant tube heat exchanger, application number is 201220281653.8, and this patent technology only improves heat transfer coefficient through the improvement of part structure, does not increase the heat transfer wall area of heat exchanger, and the simultaneous processing manufacturing degree of difficulty is higher with manufacturing cost.
At present, a great deal of research is carried out on the high efficiency of the radiant tube heat exchanger at home and abroad, mainly including the expansion of fins on the heat exchange wall surface of air and flue gas, the extension of the flue gas stroke and the heat exchange time by a baffle plate, the entrainment and mixing of the flue gas and the like, the essential improvement on the aspect of increasing the area of the heat exchange wall is not realized, and the defects of high exhaust gas temperature, low heat exchange efficiency, high-temperature corrosion of the heat exchanger and the like commonly existing in the actual production are overcome; the problems of low utilization rate of limited space in the radiant tube, low heat exchange specific surface area of the heat exchanger and the like, and particularly the lack of the radiant tube heat exchanger with better heat exchange performance. Therefore, under the condition of limited arrangement space, more intensive research is carried out on how to effectively increase the heat exchange specific surface area, increase the heat exchange stroke, optimize the structure of the radiant tube heat exchanger, install and maintain and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing the efficient heat exchanger and the burner of the gas radiant tube, which can greatly improve the effective heat exchange specific surface area of the heat exchanger, improve the preheating temperature of combustion air and reduce pollution emission, and have the advantages of high heat exchange efficiency, simple structure, large heat exchange wall area, convenience in manufacturing, installation and maintenance and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-efficiency heat exchanger of a fuel gas radiant tube comprises a shell, a combustion air inlet pipe, a combustion air outlet pipe, a flue gas discharge pipe, a central air heat exchange pipe, heat exchange thin pipes and a flue gas reflux device, wherein one end of the shell is closed, the other end of the shell is open, the combustion air outlet pipe is arranged at the closed end of the shell, the open end of the shell extends into the U-shaped radiant tube, the center of the shell is provided with the coaxial central air heat exchange pipe, one end of the central air heat exchange pipe is connected with the combustion air outlet pipe, the other end of the central air heat exchange pipe extends to the open end of the shell and is communicated with a plugging spherical crown, the plugging spherical crown is communicated with a plurality of heat exchange thin pipes which are arranged concentrically, the inlet end of each heat exchange thin pipe is connected with a combustion air inlet end plate in the shell, a baffle plate is arranged among the heat exchange thin pipes, the side of each heat exchange thin pipe of the combustion air inlet end plate on the shell is connected with the flue gas discharge pipe, and the other side of the combustion air inlet end plate is connected with the combustion air inlet end plate, and a flue gas reflux device is arranged on the opposite side of the flue gas discharge pipe and is connected with a combustion air outlet pipe.
The heat exchange thin tube is a straight tube or a spiral corrugated tube and is distributed in a plurality of concentric circles with different diameters.
The shell is connected with the U-shaped radiant tube through a connecting plate.
The flue gas reflux device comprises a flue gas reflux pipe, a pressure detection meter and an adjusting valve are arranged on the flue gas reflux pipe, and the diameter of the flue gas reflux pipe is smaller than that of the combustion air outlet pipe.
The baffle is an arched baffle or a spiral baffle containing perforations.
The outer diameter of the central air heat exchange tube is not more than 3/4 times of the outer diameter of the shell.
The heat exchange thin tube, the central air heat exchange tube and the surface of the inner wall of the shell are coated with ZS high-temperature-resistant far infrared radiation coating.
The shell, the combustion air inlet end plate, the blocking spherical crown and the baffle plate are all cast and molded by heat-resistant steel.
And the combustion-supporting air inlet pipe, the flue gas discharge pipe and the combustion-supporting air outlet pipe are all stainless steel welded structures.
The utility model provides a combustor of high-efficient heat exchanger with gas radiant tube, includes heat exchanger, U-shaped radiant tube, nozzle, and the one end of heat exchanger is passed through the U-shaped radiant tube and is connected with the nozzle, and the other end of heat exchanger is passed through the combustion air outlet pipe of heat exchanger and is connected with the combustion air entry of nozzle.
Compared with the prior art, the invention has the beneficial effects that:
according to the efficient heat exchanger of the fuel gas radiant tube, the effective heat exchange area is increased, the heat exchange efficiency is improved and the temperature of combustion air is greatly improved through the heat exchange thin tubes arranged in the central circle.
The flue gas reflux device realizes the self-circulation of the flue gas in the operation process of the radiant tube, the burner realizes low-oxygen combustion, the heat recovery rate can be improved, and the purposes of energy conservation and emission reduction are achieved. The flue gas flows in the shell, so that impurities in the flue gas can be removed, and the equipment maintenance cost is reduced.
Drawings
Fig. 1 is a schematic view of the inside of a heat exchanger.
Fig. 2 is a partial schematic view of a heat exchanger.
FIG. 3 is an external view of the connection of heat exchange tubules.
FIG. 4 is an internal view of the heat exchange tubule connection.
Fig. 5 is a schematic view of the structure of the burner.
In the figure: the device comprises a heat exchanger 1, a U-shaped radiant tube 2 and a burner 3;
the device comprises a shell 101, a combustion air inlet pipe 102, a flue gas discharge pipe 103, a central air heat exchange pipe 104, a plugging spherical crown 105, a heat exchange tubule 106, a baffle plate 107, a connecting plate 108, a combustion air inlet end plate 109, a flue gas return pipe 111, a pressure detection meter 112, an adjusting valve 113 and a combustion air outlet pipe 114.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
referring to fig. 1-4, a high-efficiency heat exchanger of a gas radiant tube comprises a shell 101, a combustion air inlet tube 102, a combustion air outlet tube 114, a flue gas discharge tube 103, a central air heat exchange tube 104, a blocking spherical crown 105, a heat exchange tubule 106, a baffle plate 107, a combustion air inlet end plate 109 and a flue gas reflux device 11, wherein one end of the shell 101 is closed, the other end is open, the closed end is provided with the combustion air outlet tube 114, the open end extends into the inside of a U-shaped radiant tube 2, and the shell 101 is connected with the U-shaped radiant tube 2 through a connecting plate 108.
The center of the shell 101 is provided with a coaxial central air heat exchange tube 104, and the outer diameter of the central air heat exchange tube 104 is not more than 3/4 times of the outer diameter of the shell 101.
One end of the central air heat exchange tube 104 is connected with a combustion air outlet tube 114, the other end extends to the open end of the shell 101 and is connected with a plugging spherical crown 105 in a penetrating way, a plurality of concentric circle arranged heat exchange tubules 106 are connected on the plugging spherical crown 105 in a penetrating way, the inlet ends of the heat exchange tubules 106 are connected with a combustion air inlet end plate 109 in the shell 101, the combustion air inlet end plate 109 is connected with the shell 101 in a sealing way, a baffle plate 108 is arranged between the heat exchange tubules 106, and the baffle plate 107 is an arch baffle plate or a spiral baffle plate containing a perforation. The heat exchange tubules 106, the central air heat exchange tube 104 and the inner wall surface of the shell 101 are coated with ZS high temperature resistant far infrared radiation paint.
The shell 101 on the side of the heat exchange tubule 106 of the combustion air inlet end plate 109 is connected with a flue gas discharge pipe 103, the shell 101 on the other side of the combustion air inlet end plate 109 is connected with a combustion air inlet pipe 102, and the opposite side of the flue gas discharge pipe 103 is provided with a flue gas reflux device connected with a combustion air outlet pipe 114. The flue gas reflux device comprises a flue gas reflux pipe 111, a pressure detection meter 112 and a regulating valve 113 are arranged on the flue gas reflux pipe 111, and the diameter of the flue gas reflux pipe 111 is smaller than that of a combustion air outlet pipe 114.
The thin heat exchange tubes 106 are straight tubes or spiral corrugated tubes and are distributed in a plurality of concentric circles with different diameters. The outer diameter of the heat exchange tubule 106 is 6-20 mm.
The shell 101, the combustion air inlet end plate 109, the plugging spherical crown 105 and the baffle plate 107 are all cast and molded by heat-resistant steel.
The combustion air inlet pipe 102, the flue gas discharge pipe 103 and the combustion air outlet pipe 114 are all stainless steel welded structures.
Referring to fig. 5, the burner of the high-efficiency heat exchanger with the gas radiant tube comprises a heat exchanger 1, a U-shaped radiant tube 2 and a burner 3, wherein one end of the heat exchanger 1 is connected with the burner 3 through the U-shaped radiant tube 2, and the other end of the heat exchanger 1 is connected with a combustion air inlet of the burner 3 through a combustion air outlet pipe 114 of the heat exchanger.
The combustion-supporting air of the heat exchanger is multi-stroke, the combustion-supporting air flows into the heat exchange tubules through the combustion-supporting air inlet pipe, carries out primary countercurrent heat exchange with the flue gas, converges in the central air heat exchange pipe after reaching the plugging spherical crown, carries out secondary heat exchange with the flue gas, is discharged from the combustion-supporting air outlet elbow pipe after being preheated, and then enters the burner nozzle for combustion after being mixed with a small amount of flue gas. The flue gas reflux device meets the condition that the flue gas flows back to the combustion-supporting air, and the pressure of the flue gas is adjusted by using the adjusting valve, so that the combustion-supporting air sucks the flue gas, and the amount of the returned flue gas is less than 15%. The radiant tube and the burner realize the self-circulation of the flue gas in the operation process.
The experiment is carried out in a thermal state laboratory by adopting a high-efficiency heat exchanger device of a fuel gas radiant tube.
The heat value of the coal gas is 18.5 +/-1 MJ/Nm3According to the coke oven gas, through a thermal simulation test, when the surface temperature of the radiant tube is 726 ℃ on average, the preheating temperature of combustion air is 512 ℃, the preheating temperature is 132 ℃ higher than the original 380 ℃, the emission temperature of flue gas is 353 ℃, the emission temperature is 107 ℃ lower than the original 460 ℃, and the flue gas waste heat recovery capacity is greatly improved. Meanwhile, under the condition of the same heating temperature of the radiant tube, the coke oven gas consumption is 12Nm from the original3The/h is reduced to 10.5Nm3And/h, the consumption is reduced by 12.5 percent.
It will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the principles of the invention, and these modifications and variations also fall within the scope of the invention as defined in the appended claims. The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
Claims (10)
1. A high-efficiency heat exchanger of a fuel gas radiant tube is characterized by comprising a shell, a combustion air inlet pipe, a combustion air outlet pipe, a flue gas discharge pipe, a central air heat exchange pipe, heat exchange thin tubes and a flue gas reflux device, wherein one end of the shell is closed, the other end of the shell is open, the closed end of the shell is provided with the combustion air outlet pipe, the open end of the shell extends into the U-shaped radiant tube, the center of the shell is provided with the coaxial central air heat exchange pipe, one end of the central air heat exchange pipe is connected with the combustion air outlet pipe, the other end of the central air heat exchange pipe extends to the open end of the shell and is communicated with a plugging spherical crown, the plugging spherical crown is communicated with a plurality of heat exchange thin tubes which are arranged concentrically, the inlet ends of the heat exchange thin tubes are connected with a combustion air inlet end plate in the shell, baffle plates are arranged among the heat exchange thin tubes, and the side of the heat exchange thin tubes of the combustion air inlet end plate on the shell is connected with the flue gas discharge pipe, the other side of the combustion air inlet end plate is connected with a combustion air inlet pipe, and the opposite side of the flue gas discharge pipe is provided with a flue gas reflux device connected with a combustion air outlet pipe.
2. The efficient heat exchanger of the gas radiant tube as claimed in claim 1, wherein the thin heat exchange tubes are straight tubes or spiral corrugated tubes and are distributed in a plurality of concentric circles with different diameters.
3. A high efficiency heat exchanger for a gas fired radiant tube as recited in claim 1 wherein said housing is connected to said U-shaped radiant tube by a connecting plate.
4. The efficient heat exchanger of the fuel gas radiant tube as claimed in claim 1, wherein the flue gas reflux device comprises a flue gas reflux pipe, the flue gas reflux pipe is provided with a pressure detection meter and a regulating valve, and the diameter of the flue gas reflux pipe is smaller than that of the combustion air outlet pipe.
5. A high efficiency heat exchanger for a gas fired radiant tube as in claim 1 wherein said baffle is an arcuate baffle or a helical baffle comprising perforations.
6. A high efficiency heat exchanger for a gas fired radiant tube as recited in claim 1 wherein said central air heat exchange tube has an outside diameter no greater than 3/4 times the outside diameter of the shell.
7. The efficient heat exchanger of a gas radiant tube as claimed in claim 1, wherein the heat exchange tubules, the central air heat exchange tube and the inner wall surface of the shell are coated with ZS high temperature resistant far infrared radiation paint.
8. The efficient heat exchanger of the gas radiant tube as recited in claim 1, wherein said shell, said combustion air inlet end plate, said plugging spherical crown and said baffle plate are made of heat-resistant steel by casting.
9. The efficient heat exchanger of the gas radiant tube as recited in claim 1, wherein the combustion air inlet tube, the flue gas discharge tube and the combustion air outlet tube are all stainless steel welded structures.
10. A burner of a high-efficiency heat exchanger with a fuel gas radiant tube as claimed in claim 1, which is characterized by comprising a heat exchanger, a U-shaped radiant tube and a burner, wherein one end of the heat exchanger is connected with the burner through the U-shaped radiant tube, and the other end of the heat exchanger is connected with a combustion air inlet of the burner through a combustion air outlet pipe of the heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110706957.8A CN113531527A (en) | 2021-06-24 | 2021-06-24 | High-efficient heat exchanger and combustor of gas radiant tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110706957.8A CN113531527A (en) | 2021-06-24 | 2021-06-24 | High-efficient heat exchanger and combustor of gas radiant tube |
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| Publication Number | Publication Date |
|---|---|
| CN113531527A true CN113531527A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110706957.8A Pending CN113531527A (en) | 2021-06-24 | 2021-06-24 | High-efficient heat exchanger and combustor of gas radiant tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN113531527A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115212670A (en) * | 2022-06-29 | 2022-10-21 | 成都易态科技有限公司 | Industrial kiln flue gas purification device and yellow phosphorus flue gas purification system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418936A (en) * | 2011-12-08 | 2012-04-18 | 中冶南方(武汉)威仕工业炉有限公司 | Air injecting and backflow flue gas entraining heat exchanger for radiant tube combustion device |
| CN102759109A (en) * | 2012-07-31 | 2012-10-31 | 中冶南方(武汉)威仕工业炉有限公司 | Air-coal gas preheating finned pipe type radiation pipe burner heat exchanger and heat exchange method |
| CN209960535U (en) * | 2019-05-22 | 2020-01-17 | 马钢(合肥)板材有限责任公司 | Flow guide type radiant tube heat exchanger and combustion air inner tube thereof |
| CN112303625A (en) * | 2020-10-09 | 2021-02-02 | 北京科技大学 | Gas radiant tube heat exchanger |
-
2021
- 2021-06-24 CN CN202110706957.8A patent/CN113531527A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418936A (en) * | 2011-12-08 | 2012-04-18 | 中冶南方(武汉)威仕工业炉有限公司 | Air injecting and backflow flue gas entraining heat exchanger for radiant tube combustion device |
| CN102759109A (en) * | 2012-07-31 | 2012-10-31 | 中冶南方(武汉)威仕工业炉有限公司 | Air-coal gas preheating finned pipe type radiation pipe burner heat exchanger and heat exchange method |
| CN209960535U (en) * | 2019-05-22 | 2020-01-17 | 马钢(合肥)板材有限责任公司 | Flow guide type radiant tube heat exchanger and combustion air inner tube thereof |
| CN112303625A (en) * | 2020-10-09 | 2021-02-02 | 北京科技大学 | Gas radiant tube heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115212670A (en) * | 2022-06-29 | 2022-10-21 | 成都易态科技有限公司 | Industrial kiln flue gas purification device and yellow phosphorus flue gas purification system |
| CN115212670B (en) * | 2022-06-29 | 2023-07-04 | 成都易态科技有限公司 | Industrial kiln flue gas purification device and yellow phosphorus flue gas purification system |
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Application publication date: 20211022 |
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| RJ01 | Rejection of invention patent application after publication |