CN220250699U - Anode furnace heat exchanger using composite crystallization film - Google Patents
Anode furnace heat exchanger using composite crystallization film Download PDFInfo
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- CN220250699U CN220250699U CN202321634553.3U CN202321634553U CN220250699U CN 220250699 U CN220250699 U CN 220250699U CN 202321634553 U CN202321634553 U CN 202321634553U CN 220250699 U CN220250699 U CN 220250699U
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- air
- heat exchange
- flue gas
- heat exchanger
- exchange module
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- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000002425 crystallisation Methods 0.000 title claims abstract description 11
- 230000008025 crystallization Effects 0.000 title claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000003546 flue gas Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 4
- 238000007670 refining Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 18
- 239000002956 ash Substances 0.000 description 17
- 239000010881 fly ash Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model provides an use positive pole stove heat exchanger of compound crystallization membrane, includes casing (1), and casing (1) divide into air heat transfer module (2) and water heat transfer module (3) from left to right, and the casing left end is equipped with flue gas entry (4), and the casing right-hand member is equipped with flue gas export (5), and air heat transfer module (2) adopts the sheet type structure, and water heat transfer module (3) adopts snakelike finned tube structure; the lower part of the water heat exchange module (3) is provided with a conical ash bucket (9); wherein, the surface of the plate (10) with the plate type structure, the outer surface of the finned tube (6) with the serpentine finned tube structure and the inner surface of the ash bucket (9) are coated with composite crystallization films. The utility model provides a heat exchanger device which accords with the high-temperature smoke characteristics of a copper refining anode furnace, and can solve the problems that a heat exchange tube is easy to corrode, dust is easy to accumulate and the smoke is slow to cool, improve the safety of the device, prolong the service life of the heat exchanger and ensure the long-period high-efficiency stable operation of the device.
Description
Technical Field
The utility model relates to the technical field of energy conservation, in particular to an anode furnace heat exchanger applying a composite crystallization membrane.
Background
The copper refining anode furnace is copper refining equipment which is commonly adopted in modern times, is widely applied to large-scale copper smelting factories at home and abroad, and has the advantages of large capacity, high degree of mechanization and automation, flexible operation, small heat dissipation loss, good sealing performance and the like.
The flue gas of the anode furnace is characterized by high temperature, and the flue gas contains a large amount of reducing agent, sulfur element, fly ash particles and the like, and after the flue gas is treated by a waste heat boiler, the temperature of the flue gas can still reach more than 500 ℃, and the sulfur component and the fly ash particles still exist. When entering the heat exchanger, the flue gas has a certain corrosion effect on the heat exchange tube, and the tube wall is easy to thin. The low-melting-point fly ash particles are easy to adhere to the surfaces of the pipe wall and the ash bucket, a scale layer is gradually formed, and a large amount of fly ash particles are deposited and agglomerated in the gaps of the heat exchange pipe, so that the heat exchange effect is poor.
In the long-time running of the anode furnace heat exchanger, the corrosion of the heat exchange tube can cause the potential safety hazard of thinning the tube wall, and the service life of the device is reduced. The deposition of fly ash particles causes ash accumulation and caking, is difficult to clean, and finally affects the heat exchange effect and the operation safety of the device. In addition, the efficient and reasonable utilization of the flue gas waste heat is also a key concern of enterprises, hot air is more efficiently and conveniently utilized than hot water, and the air preheater is difficult to realize rapid reduction of the flue gas temperature. Therefore, the heat exchanger which is corrosion-resistant, ash deposition-resistant, safe and efficient and can realize air heating and rapid flue gas cooling is urgently needed by enterprises.
Disclosure of Invention
Aiming at the conditions that the heat exchange effect of a heat exchanger is poor and the cooling speed of the flue gas is low in the working condition that the flue gas contains a large amount of fly ash particles in the high-temperature corrosive atmosphere, the utility model provides the heat exchanger device which meets the characteristics of the high-temperature flue gas of the copper refining anode furnace according to the data such as the flue gas components, the temperature, the flow rate and the like, and can solve the problems that a heat exchange pipe is easy to corrode, easy to accumulate ash and the cooling speed of the flue gas is low, improve the safety of the device, prolong the service life of the heat exchanger and ensure the long-period high-efficiency stable operation of the device.
The anode furnace heat exchanger comprises a shell, wherein the shell is divided into an air heat exchange module and a water heat exchange module from left to right, a flue gas inlet is formed in the left end of the shell, a flue gas outlet is formed in the right end of the shell, the air heat exchange module adopts a plate type structure, and the water heat exchange module adopts a serpentine fin tube structure; the lower part of the water heat exchange module is provided with a conical ash bucket; wherein, the surface of the plate type structure, the outer surface of the finned tube of the serpentine finned tube structure and the inner surface of the ash bucket are coated with composite crystallization films.
Under specific conditions, the air heat exchange module adopts a plurality of plates to be vertically arranged at intervals, so as to form a plurality of channels for flue gas and air to pass through respectively; wherein, air channel and flue gas passageway are arranged at intervals according to "1 separate 1" mode in proper order, and air channel and flue gas passageway do not communicate each other, and air and flue gas are not mixed.
Preferably, the air heat exchange module is divided into an air inlet unit and an air outlet unit in the front-rear direction, wherein an air inlet is formed in the upper portion of the air inlet unit, and an air outlet is formed in the upper portion of the air outlet unit. All air channel upper ends of the air inlet unit are communicated with the air inlet, all air channel upper ends of the air outlet unit are communicated with the air outlet, and all air channel lower ends of the air inlet unit and the air outlet unit are communicated.
In particular, two ends of the serpentine fin tube are respectively connected with a water inlet header and a water return header which are arranged outside the shell.
Preferably, the plates, the serpentine fin tubes and the fins are made of plain carbon steel;
compared with the prior equipment, the anode furnace heat exchanger has the following advantages:
1. in energy-consuming enterprises, hot air is more convenient and efficient to use than hot water, and the conversion of high-temperature flue gas waste heat into hot air as much as possible is an important point of energy-saving work of the enterprises. However, the temperature of the high-temperature flue gas is slowly reduced during gas-gas heat exchange, and one solution is to increase heat exchange equipment to realize rapid cooling of the flue gas, but the equipment with huge volume increases the cost and wastes valuable factory space. The other solution is to install a gas-liquid heat exchanger at the rear end of the air preheater device, and the temperature of the high-temperature flue gas can be quickly reduced by utilizing the heat exchange between the high-temperature flue gas and liquid, but the cost and the occupied area are increased by adding a device. In summary, the utility model designs the heat exchange module of air and water into the same heat exchange device, thereby not only considering obtaining more hot air, but also realizing rapid cooling of flue gas, and simultaneously saving the cost and the occupied area of the device.
2. The fin heat exchange tube has stronger heat exchange capacity than the light tube heat exchange tube, but in the environment containing fly ash particles, gaps among the fins are easy to accumulate dust and block, and the heat exchange effect is reduced. The heat exchange tubes are all finned tubes, and as the composite crystalline film is applied to the surface of the base material, the surface energy of the heat exchange surface is reduced, and fused or semi-fused particles are difficult to adhere to the surface of the composite crystalline film to form accumulated ash, so that the problem of accumulated ash blocking of the heat exchange tubes and the fins is solved, and the finned heat exchange tubes can also be used in the environment containing fly ash particles.
3. When high-temperature flue gas passes through the flue gas channel of the plate heat exchanger, because the reduction amplitude of the flue gas temperature is small and the blocking effect of the plate is small, a small amount of fly ash particles can fall into the flue gas channel, and at the moment, the flue gas flow speed is high, the flow is large, and a small amount of fly ash particles can be continuously blown by the flue gas. In addition, the flue gas channel is internally coated with a composite crystallization film, the composite crystallization film has the characteristic of low surface energy, and fly ash particles are less likely to stay in the flue gas channel until being blown out of the plate-type heat exchange module by flue gas. When fly ash particles in the flue gas reach the area of the fin heat exchange tube, the fin heat exchange tube bundle and the fins block the fly ash particles, the flue gas temperature suddenly drops, and the fly ash particles can drop and deposit into an ash bucket below the fin heat exchange tube in a large quantity. The composite crystallization film is also applied to the surface of the ash bucket, so that fly ash particles are not bonded with the ash bucket, and dust is more convenient to clean. The lower part of the plate heat exchange module does not need to be provided with an ash bucket, so that the device volume is further reduced and the device cost is reduced.
4. The coated composite crystalline film is an inorganic material, and is chemically inert and does not react with corrosive components. Can effectively solve the problem of high-temperature corrosion in the high-temperature flue gas environment containing corrosive components. The heat exchange tube is applied to the plate and the fin heat exchange tube, can protect the base material from being corroded, and improves the safety of the device.
5. The composite crystalline film is coated on the common carbon steel material, so that the surface function of the material is changed, the corrosion resistance and the ash accumulation resistance of the material are improved, the material can replace expensive metal materials such as stainless steel and chromium-molybdenum steel, the cost of the device can be reduced, the comprehensive performance of the device is improved, and the material has objective economic value.
Drawings
Fig. 1 is a schematic view of the overall structure of an anode furnace heat exchanger according to the present utility model.
Fig. 2 is a schematic side cross-sectional structure of the air heat exchange module shown in fig. 1.
FIG. 3 is a cross-sectional view of a fin tube of the serpentine fin tube shown in FIG. 1.
Wherein each reference numeral represents:
the device comprises a 1-shell, a 2-air heat exchange module, a 3-water heat exchange module, a 4-smoke inlet, a 5-smoke outlet, a 6-finned tube, a 7-water inlet header, an 8-water return header, a 9-ash bucket, a 10-plate, an 11-air channel, a 12-smoke channel, a 13-air inlet, a 14-air outlet, a 15-fin, a 16-air inlet unit and a 17-air outlet unit.
Detailed Description
The utility model will be further described with reference to the drawings and examples. It will be appreciated by those skilled in the art that the embodiments described below are merely illustrative of the present utility model and are not intended to be limiting in any way.
Referring to fig. 1, the anode furnace heat exchanger according to the present utility model includes a housing 1 divided into an air heat exchange module 2 and a water heat exchange module 3 from left to right. The left end of the shell is provided with a smoke inlet 4, and the right end of the shell is provided with a smoke outlet 5. The air heat exchange module 2 adopts a plate type structure, and the water heat exchange module 3 adopts a serpentine fin tube structure. The lower part of the water heat exchange module 3 is provided with a conical ash bucket 9.
Referring specifically to fig. 2, the air heat exchange module 2 employs a plurality of plates 10 vertically spaced apart (the surfaces of the plates are parallel to the front wall or the rear wall of the housing) to form a plurality of channels for the passage of flue gas and air, respectively. Wherein, air channel 11 and flue gas passageway 12 are arranged at intervals according to "1 separate 1" mode in proper order, and air channel 11 and flue gas passageway 12 do not communicate each other, and air and flue gas do not mix. In one embodiment of the present utility model, the air heat exchange module 2 is divided into an air inlet unit 16 and an air outlet unit 17 in the front-rear direction, and the space occupied by the air inlet unit 16 and the air outlet unit 17 is substantially equal. An air inlet 13 is provided at an upper portion of the air inlet unit 16, and an air outlet 14 is provided at an upper portion of the air outlet unit 17. All air passages 11 of the air inlet unit 16 are communicated with the air inlet 13 at upper ends, all air passages 11 of the air outlet unit 17 are communicated with the air outlet 14 at upper ends, and all air passages 11 of the air inlet unit 16 and the air outlet unit 17 are communicated at lower ends. In this case, the cold air enters the air heat exchange module 2 from the air inlet 13, flows downward through the air passage 11 of the air inlet unit 16, then enters the air passage 11 of the air outlet unit 17 from the lower end, flows upward and finally flows out through the air outlet 14, and forms a U-shaped air flow direction. The flue gas flows from left to right, passes through the air heat exchange module 2 from the flue gas inlet 4 through each flue gas channel 12, and then enters the water heat exchange module.
Referring specifically to fig. 3, the water heat exchange module 3 is formed by serpentine arrangement of finned tubes 6. The fins 15 densely distributed on the fin tube 6 increase the heat exchange area. Both ends of the serpentine fin tube are respectively connected with a water inlet header 7 and a water return header 8 which are arranged outside the shell 1.
In particular, the surface of the plate 10 of the air heat exchange module 2, the outer surface of the finned tube 6 of the water heat exchange module 3 (including the fins 15), and the inner surface of the ash bucket 9 are coated with composite crystalline films. The composite crystal film adopts a corrosion-resistant and ash-deposition-resistant series of composite crystal film products produced by Beijing shikou energy-saving and environment-friendly technology limited company. The composite crystalline film has uniform appearance and thickness of 60-100 μm, and has no crack, chipping, foaming, coarse granule, spherical spray, uneven surface, no air hole or bare substrate spot. The composite crystalline film belongs to an inorganic nano coating, has the characteristics of compact structure, low surface energy and stable chemical property, can improve the safety of the device, and ensures the long-term and efficient heat exchange effect of the device.
In the utility model, the specification, the spacing and the number of the plates in the air heat exchange module are designed according to the actual working condition, the required heat exchange temperature and the exhaust gas temperature. The specification, the number and the row number of the serpentine fin tubes are designed according to the actual working conditions, the required heat exchange temperature and the exhaust gas temperature. Preferably, the plates, the serpentine fin tubes and the fins are all made of plain carbon steel.
In the operation process of the anode furnace heat exchanger device, the high-temperature flue gas firstly passes through the air heat exchange module 2 to heat cold air into hot air, and then passes through the serpentine fin tube 6 to heat cold water in the heat exchange tube into hot water. Cool air enters the air channels 11 of the air heat exchange module 2 through the air inlet 13 for heating, and hot air is discharged through the air outlet 14. Cold water enters the serpentine fin tube 6 from the water inlet header 7, is heated into hot water by the serpentine fin tube 6, and flows back to the water return header 8. When the flue gas contacts the serpentine fin tube 6, the fly ash particles are deposited in a large amount into the ash bucket 9 due to the large concentration of the fly ash particles and the sudden drop in temperature and the low surface energy of the heat exchange tube. The heat exchange effect can be enhanced by the heat exchange tubes with the fins, and the gaps of the fins are not easy to block dust.
According to the anode furnace heat exchanger, under the actual demands of enterprises, gas-gas heat exchange and gas-liquid heat exchange are combined together, and two modules are designed into the same heat exchanger, so that the high-temperature flue gas heat quantity efficient recycling and the flue gas rapid cooling are realized under the limited site space and lower cost control requirements.
The foregoing description is only illustrative of the preferred embodiments of the present utility model, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (4)
1. The anode furnace heat exchanger using the composite crystallization film is characterized by comprising a shell (1), wherein the shell (1) is divided into an air heat exchange module (2) and a water heat exchange module (3) from left to right, a flue gas inlet (4) is formed in the left end of the shell, a flue gas outlet (5) is formed in the right end of the shell, the air heat exchange module (2) adopts a plate type structure, and the water heat exchange module (3) adopts a serpentine fin tube structure; the lower part of the water heat exchange module (3) is provided with a conical ash bucket (9); wherein, the surface of the plate (10) with the plate type structure, the outer surface of the finned tube (6) with the serpentine finned tube structure and the inner surface of the ash bucket (9) are coated with composite crystallization films.
2. The anode furnace heat exchanger according to claim 1, wherein the air heat exchange module (2) is vertically arranged at intervals by a plurality of plates (10) to form a plurality of channels for passing flue gas and air respectively; the air channels (11) and the smoke channels (12) are arranged at intervals in sequence in a mode of 1 partition 1, the air channels (11) are not communicated with the smoke channels (12), and air and smoke are not mixed.
3. Anode furnace heat exchanger according to claim 2, characterized in that the air heat exchange module (2) is divided into an air inlet unit (16) and an air outlet unit (17) in the front-rear direction, the upper part of the air inlet unit (16) is provided with an air inlet (13), and the upper part of the air outlet unit (17) is provided with an air outlet (14); all air channels (11) of the air inlet unit (16) are communicated with the air inlet (13), all air channels (11) of the air outlet unit (17) are communicated with the air outlet (14), and all air channels (11) of the air inlet unit (16) and the air outlet unit (17) are communicated with the lower ends.
4. Anode furnace heat exchanger according to claim 1, characterized in that the ends of the serpentine fin tubes (6) are connected to a water inlet header (7) and a water return header (8), respectively, which are arranged outside the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321634553.3U CN220250699U (en) | 2023-06-26 | 2023-06-26 | Anode furnace heat exchanger using composite crystallization film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321634553.3U CN220250699U (en) | 2023-06-26 | 2023-06-26 | Anode furnace heat exchanger using composite crystallization film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220250699U true CN220250699U (en) | 2023-12-26 |
Family
ID=89268641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321634553.3U Active CN220250699U (en) | 2023-06-26 | 2023-06-26 | Anode furnace heat exchanger using composite crystallization film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220250699U (en) |
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2023
- 2023-06-26 CN CN202321634553.3U patent/CN220250699U/en active Active
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