CN215952259U - Waste heat recoverer for flue gas of metallurgical furnace - Google Patents
Waste heat recoverer for flue gas of metallurgical furnace Download PDFInfo
- Publication number
- CN215952259U CN215952259U CN202122529184.9U CN202122529184U CN215952259U CN 215952259 U CN215952259 U CN 215952259U CN 202122529184 U CN202122529184 U CN 202122529184U CN 215952259 U CN215952259 U CN 215952259U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- flue gas
- water
- recoverer
- heat
- Prior art date
- 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.)
- Expired - Fee Related
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000003546 flue gas Substances 0.000 title claims abstract description 35
- 239000002918 waste heat Substances 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 239000000779 smoke Substances 0.000 claims description 24
- 206010053615 Thermal burn Diseases 0.000 claims description 3
- 230000002195 synergetic effect Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract description 4
- 238000009835 boiling Methods 0.000 abstract description 3
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical class CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- XTEGARKTQYYJKE-UHFFFAOYSA-N chloric acid Chemical compound OCl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-N 0.000 description 3
- 229940005991 chloric acid Drugs 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to the technical field of waste heat recovery of metallurgical furnaces, in particular to a waste heat recoverer for flue gas of metallurgical furnaces, which comprises a recoverer body, wherein a heat insulation baffle is fixedly connected inside the recoverer body, a water cavity and a flue gas cavity which are not in contact with each other are arranged, heat transfer is carried out between the water cavity and the flue gas cavity by using a heat exchange pipe, water in the water cavity is in contact with the upper part of the heat exchange pipe for heat exchange, the water is discharged from a hot water outlet after being heated, so that heated hot water is recycled, chloridion in the flue gas is prevented from being in contact with water vapor to generate chloridion acid and hydrogen chloride to corrode the heat exchange pipe, the hollow heat exchange pipe is arranged, medium water is filled, the water in the heat exchange pipe can be heated at high temperature by the flue gas, the water vapor goes upwards through the heat exchange pipe, the air in the heat exchange pipe is evacuated to form a vacuum area, then a safety valve is closed, and the boiling point of the water inside the heat exchange pipe is further reduced, thereby improving the heat exchange efficiency of the heat exchange tube.
Description
Technical Field
The utility model relates to the technical field of waste heat recovery of metallurgical furnaces, in particular to a waste heat recoverer for flue gas of a metallurgical furnace.
Background
At present, various novel and energy-saving advanced furnace types are gradually improved, the heat dissipation loss of a furnace kiln is obviously reduced after high-quality heat-insulating materials such as novel refractory fibers are adopted, the combustion is enhanced by adopting an advanced combustion device, the incomplete combustion amount is reduced, the air-fuel ratio also tends to be reasonable, however, the technology for reducing the heat loss of smoke exhaust and recovering the waste heat of the smoke exhaust is not fast in progress, and in order to further improve the heat efficiency of the furnace kiln and achieve the purposes of energy saving and consumption reduction, the recovery of the waste heat of the smoke exhaust is also an important energy-saving way.
The flue gas is a main way of wasting energy by general energy consumption equipment, so most of the common methods for recovering the waste heat of the metallurgical furnace at present contact the high-temperature flue gas with water, heat the high-temperature flue gas into hot water, and realize the waste heat recovery by recycling the hot water. The inventor finds that the prior art has the following problems in the process of researching common waste heat recovery equipment: the flue gas is directly contacted with water in the recovery process, and the flue gas contains chloride ions, so that chloric acid and hydrogen chloride are easily generated by contacting with water vapor, and a heat exchange pipeline is easily corroded.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a waste heat recoverer for flue gas of a metallurgical furnace, which aims to solve the problems that the flue gas is directly contacted with water in the recovery process in the background technology, and chloridion is contained in the flue gas, and the flue gas is contacted with water vapor to easily generate chloric acid and hydrogen chloride, so that a heat exchange pipeline is easily corroded. In order to achieve the purpose, the utility model provides the following technical scheme: the waste heat recoverer comprises a recoverer body, wherein a heat insulation baffle is fixedly connected inside the recoverer body and divides the inside of the recoverer body into a water cavity and a smoke cavity, the left side and the right side of the recoverer body are respectively provided with a smoke inlet and a smoke outlet which are communicated with the smoke cavity, and the left side and the right side of the side surface of the recoverer body are respectively fixedly inserted with a cold water inlet and a hot water outlet which are communicated with the water cavity.
The heat insulation baffle's fixed surface alternates there is the heat exchange tube, the both ends of heat exchange tube are located water cavity and flue gas intracavity respectively, and the quantity of heat exchange tube is established to a plurality of, a plurality of the heat exchange tube is equallyd divide into equivalent multiunit, and is the same group the top fixedly connected with bleeder pipe and the intercommunication each other of heat exchange tube, the multiunit the tip fixedly connected with house steward of bleeder pipe and intercommunication each other, the tip of house steward runs through the recoverer body and extends to the outside, and the tip fixed mounting of house steward has the relief valve.
Preferably, the surface of the heat exchange tube is fixedly connected with a synergistic sheet in the flue gas cavity.
Preferably, the inner wall of the recoverer body is fixedly connected with a support in the water cavity, and the support is fixedly connected with the heat exchange tube, the branch tubes and the main tube.
Preferably, the heat exchange pipe is filled with medium water.
Preferably, the number of the safety valves is two, and the two safety valves are respectively arranged at two ends of the main pipe.
Preferably, the surface of the recoverer body is fixedly connected with a heat-insulating anti-scald pad.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the water cavity and the smoke cavity which are not in contact with each other are arranged, the heat exchange tube is utilized to transfer heat between the water cavity and the smoke cavity, cold water is introduced into the upper water cavity through the cold water inlet, water in the water cavity is in contact with the upper part of the heat exchange tube to exchange heat, and the water is discharged from the hot water outlet after being heated, so that the heated hot water is recycled, and chloric acid and hydrogen chloride generated by contact of chlorine ions in smoke and water vapor can be prevented from corroding a heat exchange pipeline.
According to the utility model, by arranging the hollow heat exchange tube and filling the medium water, after the water in the heat exchange tube is heated at high temperature through smoke, the water vapor moves upwards through the heat exchange tube to empty the air in the heat exchange tube to form a vacuum area, and then the safety valve is closed, so that the water temperature boiling point in the heat exchange tube is reduced, and the heat exchange efficiency of the heat exchange tube is improved.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a top cross-sectional view of the present invention;
FIG. 3 is a perspective view of the heat exchange tubes, the branch tubes and the header tubes of the present invention.
In the figure: 1. a recoverer body; 2. a heat insulation baffle; 3. a water chamber; 4. a flue gas cavity; 5. a smoke inlet; 6. a smoke outlet; 7. a cold water inlet; 8. a hot water outlet; 9. a heat exchange pipe; 10. a branch pipe; 11. a header pipe; 12. a safety valve.
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 any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a technical solution: a waste heat recoverer for flue gas of a metallurgical furnace comprises a recoverer body 1, wherein a heat insulation baffle 2 is fixedly connected inside the recoverer body 1, the heat insulation baffle 2 divides the inside of the recoverer body 1 into a water cavity 3 and a flue gas cavity 4, a smoke inlet 5 and a smoke outlet 6 which are communicated with the flue gas cavity 4 are respectively arranged on the left side and the right side of the recoverer body 1, high-temperature flue gas in the furnace enters the recoverer body 1 from the smoke inlet 5 and is then discharged from the smoke outlet 6, a cold water inlet 7 and a hot water outlet 8 which are mutually communicated with the water cavity 3 are respectively fixedly inserted and connected on the left side and the right side of the side surface of the recoverer body 1, cold water is input into the water cavity 3 from the cold water inlet 7, and is discharged through the hot water outlet 8 after being heated for recycling;
heat exchange tube 9 has been alternate to heat baffle 2's fixed surface, the both ends of heat exchange tube 9 are located water cavity 3 and flue gas chamber 4 respectively, and establish to a plurality of heat exchange tube 9's quantity, specific quantity and recoverer body 1, heat baffle 2, the size looks adaptation of water cavity 3, a plurality of heat exchange tube 9 is equallyd divide into equivalent multiunit, top fixedly connected with bleeder 10 and intercommunication each other of the heat exchange tube 9 of the same group, the tip fixedly connected with house steward 11 of multiunit bleeder 10 communicates each other, house steward 11's tip runs through recoverer body 1 and extends to the outside, and house steward 11's tip fixed mounting has relief valve 12, relief valve 12 opens and to make house steward 11 and outside intercommunication, otherwise then close house steward 11.
In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, the surface of the heat exchange tube 9 and the inside of the flue gas cavity 4 are fixedly connected with the synergistic piece, which is a metal sheet, and can be made of high thermal conductive material such as copper, etc. to increase the surface area of the heat exchange tube 9 in the flue gas cavity 4 and improve the heating efficiency.
In this embodiment, as shown in fig. 1, 2 and 3, a support is fixedly connected to the inner wall of the recuperator body 1 and inside the water cavity 3, and the support is fixedly connected to the heat exchange tube 9, the branch tube 10 and the main tube, so as to assist in supporting the heat exchange tube 9, the branch tube 10 and the main tube, and improve the stability of each component in the using process.
In this embodiment, as shown in fig. 1, 2 and 3, the heat exchange tube 9 is filled with medium water for assisting the formation of vacuum in the heat exchange tube 9.
In this embodiment, as shown in fig. 1, 2 and 3, the number of the safety valves 12 is two, and the two safety valves 12 are respectively disposed at two ends of the main pipe 11, so that only one safety valve 12 needs to be operated when the safety valve is used, and the other safety valve 12 can be used as a backup for emergency pressure relief in a failure state.
In this embodiment, as shown in fig. 1, 2 and 3, the surface of the recycler body 1 is fixedly connected with a heat-insulating anti-scald pad, which can effectively reduce the possibility of scalding during the operation of the user, for example, when operating the safety valve 12.
The use method and the advantages of the utility model are as follows: when the waste heat recoverer for the metallurgical furnace flue gas is used, the working process is as follows:
as shown in fig. 1, 2 and 3, the waste heat recovery device is divided into an upper water cavity 3 and a lower smoke cavity 4 by a heat insulation baffle 2, a plurality of heat exchange tubes 9 are distributed on the heat insulation baffle 2, the heat exchange tubes 9 are sealed with the heat insulation baffle 2, medium water is filled in the heat exchange tubes 9 but is not filled, the upper ends of the heat exchange tubes 9 are connected with a main tube 11 by branch tubes 10, a safety valve 12 is arranged on the main tube 11, when waste heat recovery is required, the upper water cavity 3 is not filled, water in the heat exchange tubes 9 is heated at high temperature by smoke in the first step, water vapor flows upwards through the heat exchange tubes 9, air in the heat exchange tubes 9 is evacuated to form a vacuum area, then the safety valve 12 is closed, so that the water temperature boiling point in the heat exchange tubes 9 is reduced, after the safety valve 12 is closed, cold water is filled in the upper water cavity 3 through a cold water inlet 7, water in the water cavity 3 is in contact with the upper parts of the heat exchange tubes 9 to exchange heat, the heated water is discharged from the hot water outlet 8, and the heated hot water is recycled.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a waste heat recoverer of metallurgical furnace flue gas, includes recoverer body (1), its characterized in that: the interior of the recoverer body (1) is fixedly connected with a heat insulation baffle (2), the heat insulation baffle (2) divides the interior of the recoverer body (1) into a water cavity (3) and a smoke cavity (4), the left side and the right side of the recoverer body (1) are respectively provided with a smoke inlet (5) and a smoke outlet (6) which are communicated with the smoke cavity (4), and the left side and the right side of the side surface of the recoverer body (1) are respectively fixedly inserted with a cold water inlet (7) and a hot water outlet (8) which are communicated with the water cavity (3);
the fixed surface of thermal baffle (2) alternates there are heat exchange tube (9), the both ends of heat exchange tube (9) are located water cavity (3) and flue gas chamber (4) respectively, and the quantity of heat exchange tube (9) establishes to a plurality of, a plurality of equally divide into equivalent multiunit heat exchange tube (9), and organize equally top fixedly connected with bleeder (10) of heat exchange tube (9) and communicate each other, multiunit the tip fixedly connected with house steward (11) of bleeder (10) and communicate each other, the tip of house steward (11) runs through recoverer body (1) and extends to the outside, and the tip fixed mounting of house steward (11) has relief valve (12).
2. The waste heat recoverer for the flue gas of the metallurgical furnace according to claim 1, characterized in that: the surface of the heat exchange pipe (9) is fixedly connected with a synergistic sheet in the smoke air cavity (4).
3. The waste heat recoverer for the flue gas of the metallurgical furnace according to claim 1, characterized in that: the inner wall of the recoverer body (1) is fixedly connected with a support in the water cavity (3), and the support is fixedly connected with the heat exchange tube (9), the branch tubes (10) and the main tube.
4. The waste heat recoverer for the flue gas of the metallurgical furnace according to claim 1, characterized in that: the heat exchange pipe (9) is filled with medium water.
5. The waste heat recoverer for the flue gas of the metallurgical furnace according to claim 1, characterized in that: the number of the safety valves (12) is two, and the two safety valves (12) are respectively arranged at two ends of the main pipe (11).
6. The waste heat recoverer for the flue gas of the metallurgical furnace according to claim 1, characterized in that: the surface of the recoverer body (1) is fixedly connected with a heat-insulation scald-proof pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122529184.9U CN215952259U (en) | 2021-10-20 | 2021-10-20 | Waste heat recoverer for flue gas of metallurgical furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122529184.9U CN215952259U (en) | 2021-10-20 | 2021-10-20 | Waste heat recoverer for flue gas of metallurgical furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215952259U true CN215952259U (en) | 2022-03-04 |
Family
ID=80413591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122529184.9U Expired - Fee Related CN215952259U (en) | 2021-10-20 | 2021-10-20 | Waste heat recoverer for flue gas of metallurgical furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215952259U (en) |
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2021
- 2021-10-20 CN CN202122529184.9U patent/CN215952259U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |