CN112781389A - Water-cooling smoke hood and converter flue gas waste heat recovery system - Google Patents
Water-cooling smoke hood and converter flue gas waste heat recovery system Download PDFInfo
- Publication number
- CN112781389A CN112781389A CN202110235947.0A CN202110235947A CN112781389A CN 112781389 A CN112781389 A CN 112781389A CN 202110235947 A CN202110235947 A CN 202110235947A CN 112781389 A CN112781389 A CN 112781389A
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- Prior art keywords
- water
- water jacket
- jacket
- waste heat
- cooling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001816 cooling Methods 0.000 title claims abstract description 50
- 239000000779 smoke Substances 0.000 title claims abstract description 49
- 239000002918 waste heat Substances 0.000 title claims abstract description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000003546 flue gas Substances 0.000 title claims abstract description 29
- 238000011084 recovery Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 208
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
Images
Classifications
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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
- F27D17/004—Systems for reclaiming waste heat
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
-
- 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
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- 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
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a water-cooling smoke hood which comprises a front water jacket, a rear water jacket, a left water jacket and a right water jacket, wherein the front water jacket, the rear water jacket, the left water jacket and the right water jacket enclose a cavity with two open ends, the opening at one end of the cavity is communicated with a smoke outlet of a converter, the opening at the other end of the cavity is connected with a waste heat boiler, and the cavity is used as a channel for converter blowing smoke to flow to the waste heat boiler. Converter flue gas waste heat recovery system, including pure water station, middle water tank, exhaust-heat boiler and the foretell water-cooling petticoat pipe of a plurality of, the delivery port of pure water station and the first water inlet intercommunication of middle water tank, the water inlet on the water-cooling petticoat pipe communicates with the first delivery port of middle water tank respectively, and the delivery port on the water-cooling petticoat pipe communicates with the second water inlet of middle water tank respectively, and the second delivery port of middle water tank communicates with exhaust-heat boiler's water inlet. The invention avoids the air resistance phenomenon in the converter flue gas cooling process.
Description
Technical Field
The invention relates to the technical field of flue gas waste heat recovery equipment, in particular to a water-cooling smoke hood and a converter flue gas waste heat recovery system.
Background
Copper matte converting is an important link of copper smelting, receives copper matte in a smelting stage, and produces blister copper through converting operation of a converting furnace for supplying requirements for fire refining. The flue gas that converting operation produced has taken away 50% heat in the converting stage, and copper smelting enterprise all adopts the mode that the water-cooling petticoat pipe connects exhaust-heat boiler behind the stove to retrieve partial flue gas waste heat at present. Wherein, traditional water-cooling petticoat pipe adopts monoblock through cooling water structure, appears the air lock phenomenon easily in the use, and the cooling effect is uneven, leads to water-cooling petticoat pipe water jacket life to shorten greatly. The traditional water-cooling smoke hood adopts an open circulation mode, and the circulating water supply pressure is insufficient.
Disclosure of Invention
The invention aims to provide a water-cooling smoke hood and a converter flue gas waste heat recovery system, which are used for solving the problems in the prior art, avoiding the air resistance phenomenon in the converter flue gas cooling process and improving the waste heat recovery efficiency of the converter flue gas.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a water-cooling smoke hood which comprises a front water jacket, a rear water jacket, a left water jacket and a right water jacket, wherein the front water jacket, the rear water jacket, the left water jacket and the right water jacket enclose a cavity with two open ends, an opening at one end of the cavity is communicated with a smoke outlet of a converter, an opening at the other end of the cavity is connected with a waste heat boiler, and the cavity is used as a channel for converter blowing smoke to flow to the waste heat boiler.
Preferably, the front water jacket, the rear water jacket, the left water jacket and the right water jacket are respectively formed by splicing a plurality of mutually independent water jackets, each water jacket is provided with a water inlet and a water outlet, a rib plate is arranged in each water jacket, and a water through hole is formed in each rib plate.
Preferably, the front water jacket and the rear water jacket are respectively connected with the left water jacket in a sealing manner, and the front water jacket and the rear water jacket are respectively connected with the right water jacket in a sealing manner.
The invention also provides a converter flue gas waste heat recovery system which comprises a pure water station, an intermediate water tank, a waste heat boiler and a plurality of water-cooling smoke hoods, wherein a water outlet of the pure water station is communicated with a first water inlet of the intermediate water tank, water inlets on the water-cooling smoke hoods are respectively communicated with a first water outlet of the intermediate water tank, water outlets on the water-cooling smoke hoods are respectively communicated with a second water inlet of the intermediate water tank, and a second water outlet of the intermediate water tank is communicated with a water inlet of the waste heat boiler.
Preferably, the water inlet on the water-cooling smoke cover is communicated with one end of a main water inlet pipe through a pipeline respectively, the other end of the main water inlet pipe is communicated with a first water outlet of the middle water tank, and a circulating pump is arranged on the main water inlet pipe.
Preferably, the number of the water-cooling smoke hoods is two, and the water-cooling smoke hoods correspond to the main water inlet pipes one to one.
Compared with the prior art, the invention has the following technical effects:
the water-cooling smoke hood and the converter flue gas waste heat recovery system avoid the phenomenon of air resistance in the cooling process of the converter flue gas, and improve the waste heat recovery efficiency of the converter flue gas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of a water-cooled smoke hood of the present invention;
FIG. 2 is a schematic structural diagram II of the water-cooled smoke hood of the invention;
FIG. 3 is a schematic structural diagram of a converter flue gas waste heat recovery system of the present invention;
wherein: 1. a pure water station; 2. an intermediate water tank; 3. a first main water inlet pipe; 4. a second main water inlet pipe; 5. a first circulation pump; 6. a second circulation pump; 7. a first water-cooled hood; 8. a second water-cooled smoke hood; 9. a waste heat boiler; 10. a converter; 11. a rib plate; 12. a vertical junction; 13. a transverse joint; 14. a smoke inlet; 15. a smoke outlet; 16. a front water jacket; 17. and a rear water jacket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a water-cooling smoke hood and a converter flue gas waste heat recovery system, which are used for solving the problems in the prior art, avoiding the air resistance phenomenon in the converter flue gas cooling process and improving the waste heat recovery efficiency of the converter flue gas.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 3: the embodiment provides a water-cooling smoke hood, which comprises a front water jacket 16, a rear water jacket 17, a left water jacket and a right water jacket, wherein the front water jacket 16, the rear water jacket 17, the left water jacket and the right water jacket enclose a cavity with two open ends, the opening at one end of the cavity is a smoke inlet 14, the smoke inlet 14 is communicated with a smoke outlet of a converter 10, the opening at the other end of the cavity is a smoke outlet 15, the smoke outlet 15 is connected with a waste heat boiler, and the cavity is used as a channel for converting smoke of the converter 10 to flow to the waste heat boiler.
The front water jacket 16, the rear water jacket 17, the left water jacket and the right water jacket are respectively formed by splicing a plurality of mutually independent water jackets, and the vertical connecting part 12 and the transverse connecting part 13 of the adjacent water jackets are connected or welded through flanges; each water jacket is provided with a water inlet and a water outlet, a plurality of rib plates 11 are arranged in each water jacket, the rib plates 11 divide the interior of the water jacket into a plurality of areas, and water through holes are formed in the rib plates 11 and are used as circulating water channels to communicate with the areas in one water jacket. The front water jacket 16 and the rear water jacket 17 are respectively connected with the left water jacket in a sealing way, and the front water jacket 16 and the rear water jacket 17 are respectively connected with the right water jacket in a sealing way.
The invention also provides a converter flue gas waste heat recovery system, which comprises a pure water station 1, an intermediate water tank 2, a waste heat boiler 9 and two water cooling smoke hoods, wherein the two water cooling smoke hoods are respectively a first water cooling smoke hood 7 and a second water cooling smoke hood 8, a water outlet of the pure water station 1 is communicated with a first water inlet of the intermediate water tank 2, a water inlet on the first water cooling smoke hood 7 is communicated with one end of a first main water inlet pipe 3 through a pipeline, the other end of the first main water inlet pipe 3 is communicated with a first water outlet of the intermediate water tank 2, and a first circulating pump 5 is arranged on the first main water inlet pipe 3; a water inlet on the second water-cooling smoke hood 8 is communicated with one end of a second main water inlet pipe 4 through a pipeline, the other end of the second main water inlet pipe 4 is communicated with a first water outlet of the middle water tank 2, and a second circulating pump 6 is arranged on the second main water inlet pipe 4; and a water outlet on the first water-cooling smoke hood 7 and a water outlet on the second water-cooling smoke hood 8 are respectively communicated with a second water inlet of the middle water tank 2, and a second water outlet of the middle water tank 2 is communicated with a water inlet of the waste heat boiler 9.
The working process of the converter flue gas waste heat recovery system of the embodiment is as follows: circulating water from the pure water station 1 is sent into the intermediate water storage tank from the water outlet of the pure water station 1 through the first water inlet of the intermediate water storage tank, the circulating water in the intermediate water storage tank is forcibly pumped to the first water-cooling smoke hood 7 and the main water inlet pipe of the second water-cooling smoke hood 8 through the first circulating pump 5 and the second circulating pump 6, and enters the inside of each subarea water jacket from the water inlet at the lower end of each subarea water jacket through the main water inlet pipe and each subarea water jacket water inlet pipe, flows from the water outlet at the upper end of each partition water jacket to the water outlet pipe of each partition water jacket after passing through the circulating water channel of each rib plate 11 from bottom to top in each partition water jacket, then the water flows to a main water return pipe of the first water-cooling smoke hood 7 and a main water return pipe of the second water-cooling smoke hood 8 and flows back to the middle water storage tank from the main water return pipe through a second water inlet of the middle water storage tank, the processes are continuously carried out by forced circulation of a circulating pump in the production process, meanwhile, the circulating water with the increased temperature is sent to other equipment such as a waste heat boiler 9 from a second water outlet of the middle water storage tank for use.
Compared with the traditional open circulation, the converter flue gas waste heat recovery system has enough circulation pressure and obvious circulation effect. In the original open type circulating system, pure water from the pure water station 1 flows to the water cooling smoke hood through the circulating pump, then backwater flows back to the backwater tank, the backwater tank is arranged in an open mode, and the circulating water system is open. The difference of the two circulation modes is that the circulating water pressure of the converter flue gas waste heat recovery system reaches 0.35-0.4 Mpa, the converter flue gas waste heat recovery system is forced to circulate, and the circulating heat exchange effect is good; the original open-type circulating system has the circulating water pressure of 0.2Mpa and relatively poor circulating heat exchange effect.
The circulating water of the converter flue gas waste heat recovery system and the smelting furnace waste heat boiler 9 of the embodiment uniformly use pure water, and the water temperature is increased to 80.3 ℃ from 25 ℃ after circulating cooling, and is increased by 55.3 ℃. This novel accurate water supply structure water-cooling petticoat pipe of subregion and converter flue gas waste heat recovery system can use with exhaust-heat boiler 9 grafting, realizes waste heat recovery as far as possible and utilizes.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. A water-cooling petticoat pipe, its characterized in that: the converter blowing smoke-gas recovery device comprises a front water jacket, a rear water jacket, a left water jacket and a right water jacket, wherein the front water jacket, the rear water jacket, the left water jacket and the right water jacket enclose a cavity with two open ends, an opening at one end of the cavity is communicated with a smoke outlet of a converter, an opening at the other end of the cavity is connected with a waste heat boiler, and the cavity is used as a channel for flowing converter blowing smoke-gas to the waste heat boiler.
2. The water-cooled fumehood of claim 1, wherein: the front water jacket, the rear water jacket, the left water jacket and the right water jacket are respectively formed by splicing a plurality of mutually independent water jackets, each water jacket is provided with a water inlet and a water outlet, a rib plate is arranged in each water jacket, and a water through hole is formed in each rib plate.
3. The water-cooled fumehood of claim 1, wherein: the front water jacket and the rear water jacket are respectively connected with the left water jacket in a sealing manner, and the front water jacket and the rear water jacket are respectively connected with the right water jacket in a sealing manner.
4. The utility model provides a converter flue gas waste heat recovery system which characterized in that: the water-cooling smoke hood comprises a pure water station, an intermediate water tank, a waste heat boiler and a plurality of water-cooling smoke hoods according to any one of claims 1 to 3, wherein a water outlet of the pure water station is communicated with a first water inlet of the intermediate water tank, a water inlet of each water-cooling smoke hood is communicated with a first water outlet of the intermediate water tank, a water outlet of each water-cooling smoke hood is communicated with a second water inlet of the intermediate water tank, and a second water outlet of the intermediate water tank is communicated with a water inlet of the waste heat boiler.
5. The converter flue gas waste heat recovery system of claim 4, characterized in that: the water inlet on the water-cooling petticoat pipe communicates with the one end of main inlet tube through the pipeline respectively, the other end of main inlet tube with the first delivery port intercommunication of middle water tank, be provided with the circulating pump on the main inlet tube.
6. The converter flue gas waste heat recovery system of claim 4, characterized in that: the water-cooling petticoat pipe is two, the water-cooling petticoat pipe with main inlet tube one-to-one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110235947.0A CN112781389A (en) | 2021-03-03 | 2021-03-03 | Water-cooling smoke hood and converter flue gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110235947.0A CN112781389A (en) | 2021-03-03 | 2021-03-03 | Water-cooling smoke hood and converter flue gas waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112781389A true CN112781389A (en) | 2021-05-11 |
Family
ID=75762196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110235947.0A Pending CN112781389A (en) | 2021-03-03 | 2021-03-03 | Water-cooling smoke hood and converter flue gas waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112781389A (en) |
-
2021
- 2021-03-03 CN CN202110235947.0A patent/CN112781389A/en active Pending
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