CN217651262U - Converter flue gas waste heat recovery energy plate with straight finned tube structure - Google Patents
Converter flue gas waste heat recovery energy plate with straight finned tube structure Download PDFInfo
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- CN217651262U CN217651262U CN202221671617.2U CN202221671617U CN217651262U CN 217651262 U CN217651262 U CN 217651262U CN 202221671617 U CN202221671617 U CN 202221671617U CN 217651262 U CN217651262 U CN 217651262U
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Abstract
The utility model provides a converter steelmaking dry process dust removal technology flue gas waste heat recovery's ability board, a converter flue gas waste heat recovery's of straight fin tube structure ability board, the ability board mainly comprises the straight fin on heat exchange tube and heat exchange tube surface, and the heat exchange tube is vertical snakelike state, and the both ends opening is located the top and the bottom of ability board respectively, and every section vertical body surface evenly is equipped with vertical straight fin along the circumferencial direction in the heat exchange tube, is equipped with a plurality of zigzags on every straight fin and carves the mouth, and the zigzag is carved mouthful and is crisscross to distribute, is located the different axial section of body respectively. Compared with the prior art, the utility model discloses can the board carry out waste heat recovery to the high temperature section flue gas in the converter flue gas evaporative cooler, can produce the middle and high pressure saturated steam of level, reduce the water spray volume, reduce the flue gas flow of evaporative cooler export, reduce the subsequent processing cost of converter flue gas.
Description
Technical Field
The utility model belongs to the technical field of converter flue gas waste heat recovery, in particular to converter steelmaking dry dedusting process flue gas waste heat recovery energy board of straight finned tube structure.
Background
The converter gas (sometimes called converter flue gas) at the temperature of 1600 ℃ from the steel converter contains more than 70 percent of combustible component CO, and the rest is CO 2 、O 2 And is therefore also referred to as converter gas. But also contains a large amount of dust which contains more available components such as iron, magnesium and the like and needs to be recovered) is firstly put into a vaporization cooling flue waste heat boiler and cooled to 1000 ℃. The dust in this temperature range is soft and has little abrasiveness to the metal wall surface. At present, the vaporization cooling flue waste heat boiler is widely used, and almost every converter is equipped. Characteristics of the converter gas: high temperature, dustiness, magnetism, abrasiveness, static electricity, intermittence, periodicity, flammability and extremely harsh conditions.
Converter gas at a temperature of 1000 ℃ below zero is hard due to dust, so that the abrasion of the metal wall surface is large, and the converter gas enters an evaporative cooler at present, is cooled to 200 ℃ below zero by cold water, and then is subjected to dust removal and purification. Therefore, there is a great waste of energy and it is very important to recover this high grade heat.
SUMMERY OF THE UTILITY MODEL
The technical problem is as follows: in order to solve the defects of the prior art, the utility model provides a converter steelmaking dry dedusting process flue gas waste heat recovery's of straight finned tube structure ability board, its waste heat that can effectively retrieve the high temperature section of converter flue gas.
The technical scheme is as follows: the utility model provides a converter flue gas waste heat recovery's of straight fin tube structure ability board, the ability board mainly comprises the straight fin on heat exchange tube and heat exchange tube surface, and the heat exchange tube is vertical snakelike state, and the both ends opening is located the top and the bottom of ability board respectively, and every section vertical body surface evenly is equipped with vertical straight fin along the circumferencial direction in the heat exchange tube, is equipped with a plurality of zigzags on every straight fin, and the zigzag is carved mouthful and is crisscross to distribute, is located the different axial section of body respectively.
The upper end opening of the energy plate heat exchange tube is connected to an external steam drum, and the lower end opening of the energy plate heat exchange tube is connected to the steam drum through a forced circulation pump, so that a circulation passage of a cooling medium is formed.
As a preferable scheme:
four straight fins are uniformly arranged on the surface of each vertical section of tube body in the heat exchange tube along the circumferential direction.
The end parts of each vertical tube body in the heat exchange tube are connected through an elbow.
As the improvement scheme, the energy plate further comprises a shell and a heat conduction layer inside the shell, and the heat exchange tubes are buried in the heat conduction layer. The housing must be resistant to high temperatures, abrasion and demagnetization; the heat conducting layer is a wear-resistant heat conducting layer.
Further:
every section of vertical body surface in the heat exchange tube evenly is equipped with four straight fins along the circumferencial direction, and two straight fins are located the heat conduction in situ and are parallel with the face of shell, and two other straight fins extend to the outside of shell and perpendicular with the face of shell, are located the flue gas circulation space.
The top and the top lateral surface of the energy plate shell are provided with an upper anti-abrasion cover, and the upper anti-abrasion cover comprises a vertical plate at the top and two side inclined plates connected with the lower end of the vertical plate. The upper anti-wear cover plays an anti-wear protection role for the energy plates, and the vertical plate at the top of the upper anti-wear cover and the inclined plates at the two sides respectively play a guiding role for dust.
The bottom outer side face of the energy plate shell is provided with a lower anti-abrasion cover, and the lower anti-abrasion cover is inclined plates arranged on two sides of the lower anti-abrasion cover in an inclined mode. The lower anti-wear cover plays an anti-wear protection role for the energy plates, and the inclined plates on the two sides of the lower anti-wear cover respectively play a guiding role for dust.
The angle of the inclined plates of the upper anti-wear cover and the lower anti-wear cover is designed and manufactured according to the repose angle of dust in the flue gas of the converter.
The utility model also provides a contain converter flue gas waste heat recovery's of straight finned tube structure evaporative cooler that can the board, can the board setting in the inside upper portion region of evaporative cooler tower body, the below of flue gas import.
As a preferable scheme:
the energy plates are uniformly distributed in the evaporative cooler tower body along the circumferential direction and are radially placed. The vertical wall surface is arranged to be suitable for longitudinal washing of external smoke along the vertical plate surface.
The energy plates are arranged in different widths and are placed in a staggered mode.
The evaporative cooler is characterized by further comprising a spraying device arranged above the energy plate and/or below the energy plate, wherein the spraying device comprises a conveying pipeline and an internal spray head which are arranged outside the tower body and a cold water inlet which is arranged on the side wall of the tower body, the spray head is arranged on the side wall of the tower body, and the conveying pipeline is connected with the cold water inlet.
The dust content in the smoke is larger and generally reaches 150 g/m 3 In addition, the particles are large, some of the particles even have the particle size of more than 2mm, and the dust contains a plurality of metal elements, so the dust is seriously abraded to the wall surface, and the metal particles generate static electricity in collision and the like in the flowing process, and have adsorbability and magnetism. The utility model discloses an can the board for erecting the wall and arrange, the windward side width of ability board is very little, consequently, can not occupy more flue gas flow area, that is to say set up behind the ability board, because waste heat recovery is to the cooling of flue gas, and compare in the steam that original water spray produced gets into in the flue gas, set up behind the ability board to the velocity of flow of flue gas nearly unchangeable, can not produce the wearing and tearing to the ability board because of flue gas velocity of flow grow is a lot. The energy plate can be not provided with a shell and a heat conduction layer, and the heat exchange tube is directly arranged in the flue gas as the energy plate. As improvement scheme, the ability board also can set up the shell and with the heat-conducting layer, the shell adopts high temperature resistant nonmagnetic material (for example high temperature resistant stainless steel), can not make magnetic dust adsorb on the ability board to keep the cleanness of face, make the heat transfer last high-efficient.
Has the advantages that: compared with the prior art, the utility model discloses in the ability board, straight fin and heat exchange tube direct weld, the heat of the straight fin absorbed flue gas that exposes in the flue gas can directly spread into in the heat exchange tube, has improved heat exchange efficiency. Meanwhile, the temperature of the fin tip of each straight fin is higher than that of the fin root (pipe wall), so that the expansion amount of the fin tip is large, each straight fin is provided with a saw-tooth wedge port, the expansion stress can be eliminated, and the saw-tooth wedge ports of adjacent straight fins are in a staggered state, so that the heat stress concentration of a heat exchange pipe is avoided, and the damage of the heat exchange pipe is avoided. The utility model discloses can set up the flue gas import section in converter flue gas evaporative cooler tower by the board, carry out waste heat recovery to the high temperature section of converter flue gas, can produce the middle and high pressure saturated steam of level, reduce the water spray volume, reduce the flue gas flow of spraying tower export, reduce the subsequent processing cost of converter flue gas.
Drawings
Fig. 1 is a schematic structural diagram of the energy plate of the present invention.
Fig. 2 is the utility model discloses can the structure schematic diagram of the vertical body of heat exchange tube in the board.
Fig. 3 is a schematic structural view of the upper wear-proof cover and the lower wear-proof cover of the plate of the present invention.
Fig. 4 is a schematic diagram of the arrangement of the energy plate in the evaporative cooler of the present invention.
Fig. 5 is a schematic view of the location of the energy plate in the evaporative cooler of the present invention.
Detailed Description
The device of the present invention will be further explained with reference to the accompanying drawings.
Example 1
An energy plate for recovering converter flue gas waste heat with a straight fin tube structure is shown in figures 1-3, wherein the energy plate 1 is composed of a heat exchange tube 11 and straight fins 12 on the surface of the heat exchange tube 11, the heat exchange tube 11 is in a vertical S-shaped state, openings at two ends of the heat exchange tube are respectively located at the top and the bottom, four vertical straight fins 12 are uniformly arranged on the surface of each section of vertical tube body in the heat exchange tube 11 along the circumferential direction, a plurality of saw-tooth-shaped wedge ports 13 are arranged on each straight fin 12, and the saw-tooth-shaped wedge ports 13 are distributed in a staggered mode and are respectively located on different axial cross sections of the tube body. The ends of the heat exchange tubes 11 between each vertical tube are connected by elbows.
The energy plate can be directly arranged in the converter flue gas waste heat recovery device.
As a modification, the energy plate 1 further comprises a casing 14 and a heat conducting layer 15 inside the casing 14, and the heat exchange tubes 11 are buried in the heat conducting layer 15. The housing must be resistant to high temperatures, abrasion and demagnetization; the heat conducting layer is a wear-resistant heat conducting layer. Four straight fins 12 are uniformly arranged on the surface of each vertical section of the tube body in the heat exchange tube 11 along the circumferential direction, two straight fins are positioned in the heat conduction layer 15 and are parallel to the surface of the shell 14, and the other two straight fins extend to the outside of the shell 14 and are perpendicular to the surface of the shell 14 and are positioned in a smoke circulation space.
An upper wear-resistant cover 16 is arranged on the top and the outer side surface of the shell 14, and the upper wear-resistant cover 16 comprises a vertical plate on the top and two side inclined plates connected with the lower ends of the vertical plate. The upper wear-resistant cover 16 protects the top plates from wear, and the vertical plate at the top and the inclined plates at the two sides respectively guide dust. The outer side surface of the bottom of the outer shell 14 is provided with a lower wear-proof cover 17, and the lower wear-proof cover 17 is a tilted two-side tilted plate. The lower anti-wear cover 17 can protect the plates from wear, and the inclined plates on the two sides of the lower anti-wear cover respectively guide dust. The angle of the inclined plates of the upper anti-wear cover and the lower anti-wear cover is designed and manufactured according to the repose angle of dust in the flue gas of the converter.
The upper end openings of the energy plate heat exchange tubes 11 are connected to an external drum, and the lower end openings of the energy plate heat exchange tubes 11 are connected to the drum by a forced circulation pump, thereby forming a circulation passage of a cooling medium.
The working principle of the energy plate is as follows:
after absorbing the heat released by the high temperature converter gas, the outer shell 14 of the energy plate 1 transfers the heat to the heat conduction layer 15, the heat conduction layer 15 transfers the heat to the heat exchange tube 11, and the straight fins 12 absorb the heat released by the high temperature converter gas and transfer the heat to the heat exchange tube 11, and finally all the heat is transferred to the water in the heat exchange tube 11. Saturated water from the steam pocket is driven by a forced circulation pump to be sent into the heat exchange tube 11, the saturated water is changed into a steam-water mixture after absorbing the heat released by coal gas, the steam-water mixture is sent to the steam pocket from an outlet at the upper end of the heat exchange tube 11, after steam-water separation, saturated steam is sent out, and the saturated water participates in circulation again.
As shown in fig. 4-5, the energy plate is applied by installing it in an evaporative cooler, and the energy plate 1 is arranged in the upper area of the interior of the tower body of the evaporative cooler 2, below the flue gas inlet. The energy plates 1 are uniformly distributed in the tower body of the evaporative cooler 2 along the circumferential direction and are radially arranged. The vertical wall is suitable for the longitudinal washing of external smoke along the vertical plate surface. The energy plates 1 can be set to different widths and are arranged in a staggered manner to highly and efficiently utilize the space in the tower, so that the flue gas scouring speed from top to bottom is uniform.
The evaporative cooler further comprises a spraying device arranged above and/or below the energy plate, the spraying device comprises a conveying pipeline and an internal spray head which are arranged outside the tower body, and a cold water inlet arranged on the side wall of the tower body, the spray head is arranged on the side wall of the tower body, and the conveying pipeline is connected with the cold water inlet.
Claims (10)
1. The utility model provides an energy board of converter flue gas waste heat recovery of straight fin tube structure, a serial communication port, energy board (1) mainly comprises straight fin (12) on heat exchange tube (11) and heat exchange tube (11) surface, and heat exchange tube (11) are vertical snakelike state, and both ends opening is located the top and the bottom of energy board (1) respectively, and every section vertical body surface evenly is equipped with vertical straight fin (12) along the circumferencial direction in heat exchange tube (11), is equipped with a plurality of zigzags on every straight fin (12) and carves mouth (13), and mouth (13) crisscross distribution is carved to the zigzags, is located the different axial section of body respectively.
2. The converter flue gas waste heat recovery energy plate with the straight fin tube structure as claimed in claim 1, wherein four straight fins (12) are uniformly arranged on the surface of each vertical tube body in the heat exchange tube (11) along the circumferential direction.
3. The converter flue gas waste heat recovery energy plate with straight fin tube structure as claimed in claim 1, wherein the ends of each vertical tube body in the heat exchange tube (11) are connected through an elbow.
4. The converter flue gas waste heat recovery energy plate with the straight fin tube structure as claimed in claim 1, wherein the energy plate (1) further comprises an outer shell (14) and a heat conduction layer (15) inside the outer shell (14), and the heat exchange tubes (11) are buried in the heat conduction layer (15).
5. The energy plate with the straight fin tube structure for recovering the residual heat of the converter flue gas according to claim 4, wherein four straight fins (12) are uniformly arranged on the surface of each vertical tube body in the heat exchange tube (11) along the circumferential direction, two straight fins are positioned in the heat conduction layer (15) and are parallel to the plate surface of the outer shell (14), and the other two straight fins extend to the outside of the outer shell (14) and are perpendicular to the plate surface of the outer shell (14).
6. The converter flue gas waste heat recovery energy plate with the straight fin tube structure as claimed in claim 4, wherein an upper wear-resistant cover (16) is arranged on the top and the outer side surface of the top of the outer shell (14), and the upper wear-resistant cover (16) comprises a vertical plate on the top and two side inclined plates connected with the lower ends of the vertical plate.
7. The converter flue gas waste heat recovery energy plate with the straight fin tube structure as claimed in claim 4, wherein a lower anti-wear cover (17) is arranged on the outer side surface of the bottom of the outer shell (14), and the lower anti-wear cover (17) is an inclined plate arranged on two sides in an inclined manner.
8. An evaporative cooler (2) comprising the converter flue gas waste heat recovery energy plate of the straight fin tube structure of any one of claims 1 to 7, characterized in that the energy plate (1) is arranged in the upper region inside the tower body of the evaporative cooler (2) below the flue gas inlet.
9. An evaporative cooler (2) according to claim 8, wherein the energy panels (1) are evenly distributed circumferentially within the tower of the evaporative cooler (2) and are radially disposed.
10. An evaporative cooler according to claim 9, characterised in that the energy panels (1) are arranged in different widths, staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221671617.2U CN217651262U (en) | 2022-06-30 | 2022-06-30 | Converter flue gas waste heat recovery energy plate with straight finned tube structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221671617.2U CN217651262U (en) | 2022-06-30 | 2022-06-30 | Converter flue gas waste heat recovery energy plate with straight finned tube structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217651262U true CN217651262U (en) | 2022-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221671617.2U Active CN217651262U (en) | 2022-06-30 | 2022-06-30 | Converter flue gas waste heat recovery energy plate with straight finned tube structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217651262U (en) |
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2022
- 2022-06-30 CN CN202221671617.2U patent/CN217651262U/en active Active
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