CN219470092U - Protection type composite energy plate for recovering waste heat of converter gas and evaporative cooler - Google Patents
Protection type composite energy plate for recovering waste heat of converter gas and evaporative cooler Download PDFInfo
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- CN219470092U CN219470092U CN202320302860.5U CN202320302860U CN219470092U CN 219470092 U CN219470092 U CN 219470092U CN 202320302860 U CN202320302860 U CN 202320302860U CN 219470092 U CN219470092 U CN 219470092U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model provides a protection type composite energy plate for recovering waste heat of converter gas and an evaporative cooler, wherein the protection type composite energy plate mainly comprises heat exchange tubes, straight fins, protection plates and heat conducting media, the heat exchange tubes are in a serpentine state, the straight fins are vertically arranged on the outer walls of tube bodies of the heat exchange tubes, the protection plates are parallel to planes in which the heat exchange tubes are arranged in a serpentine mode, two protection plates are arranged, all tube bodies of the heat exchange tubes are clamped between the two protection plates, the heat conducting media are filled outside the heat exchange tubes between the two protection plates, and the straight fins are perpendicular to the protection plates and penetrate through the protection plates. The energy plate is placed in the vertical wall shape in the tower body of the evaporative cooler, wherein the protection plate can protect the heat exchange tube, reduce abrasion, improve service life and have smaller influence on the heat conduction effect of the energy plate. Meanwhile, the large heat exchange surface of the fin is a vertical surface, and the discontinuous fin reduces dust accumulation and reduces abrasion of dust to the heat exchange surface.
Description
Technical Field
The utility model belongs to the technical field of converter gas waste heat recovery, and particularly relates to a protective composite energy plate and an evaporative cooler for converter gas waste heat recovery.
Background
The converter gas of 1600 ℃ from the steelmaking converter contains combustible component CO, the content of which is more than 70 percent, and the rest is CO 2 、O 2 Also contains a large amount of dust, and the dust contains more iron, magnesium and other usable components and needs to be recovered. Firstly, the waste heat enters a vaporization cooling flue waste heat boiler, and the temperature is reduced to 1000 ℃. The dust in the temperature section is soft and has small abrasion to the metal wall surface. Currently, the use of evaporative cooling flue waste heat boilers is relatively common, and almost every converter is equipped. Characteristics of converter gas: high temperature, dust content, magnetism, abrasion, static electricity, intermittence, periodicity and combustibility, and extremely harsh conditions.
The dust of the converter gas at the temperature of 1000 ℃ becomes hard, so that the abrasion to the metal wall surface is large, and the current situation is that the converter gas enters an evaporative cooler, is cooled to the temperature of 200 ℃ by cold water, and is subjected to dust removal and purification. Therefore, there is a great waste of energy, and it is extremely important to recover the high-grade heat. In addition, the heat exchange tube lacks effective protection, resulting in a short service life of the heat exchange tube.
Disclosure of Invention
Technical problems: in order to solve the defects in the prior art, the utility model provides a protective composite energy plate for recovering waste heat of converter gas and an evaporative cooler.
The technical scheme is as follows: the utility model provides a protection type composite energy plate for recovering waste heat of converter gas, which mainly comprises heat exchange tubes, straight fins, protection plates and heat conducting media, wherein the heat exchange tubes are in a serpentine state, the straight fins are vertically arranged on the outer walls of tube bodies of the heat exchange tubes, the protection plates are parallel to planes in which the heat exchange tubes are arranged in a serpentine manner, two protection plates are arranged, all tube bodies of the heat exchange tubes are clamped between the two protection plates, the heat conducting media are filled outside the heat exchange tubes between the two protection plates, and the straight fins are perpendicular to the protection plates and penetrate through the protection plates.
The upper end opening of the heat exchange tube is connected to an external drum, and the lower end opening of the heat exchange tube is connected to the drum by a forced circulation pump, thereby forming a circulation path of the cooling medium.
As a preferred or specific embodiment:
the heat exchange tube is in a horizontal serpentine state, openings at two ends are respectively positioned at the top and the bottom of the energy plate, each section of horizontal tube body in the heat exchange tube is parallel to each other, a plurality of straight fins with vertical surfaces are arranged on the outer wall of the tube body, and the straight fins are H-shaped straight fins, are perpendicular to the protection plate and penetrate through the protection plate.
Further, the straight fins on the different horizontal tube bodies are aligned up and down, and the lengths of the straight fins exposed out of the protective plate are the same, so that a plurality of parallel discontinuous vertical surfaces are formed.
Furthermore, the heat exchange tube is a single H-shaped fin tube, and two long sides in the H shape are perpendicular to the protective plate, so that the length of the straight fin exposed out of the protective plate is longer, and the heat exchange effect is better.
The protection board is made of high-temperature resistant, wear-resistant and nonmagnetic metal, and has almost no influence on the overall heat conduction effect of the energy board.
The utility model also provides an evaporative cooler, which comprises the protective composite energy plate for recovering the waste heat of the converter gas, wherein the energy plate is arranged in the tower body of the evaporative cooler, below the gas inlet and in a vertical wall shape.
The energy plate is arranged in the upper area inside the tower body of the evaporative cooler or in the whole area inside the tower body, and is arranged in an upper section, a middle section and a lower section.
As an embodiment, the energy plates are uniformly distributed in the circumferential direction in the evaporative cooler tower body and are radially placed.
Preferably, the energy plates are arranged in different widths and are staggered.
As another embodiment, the energy plates are more than two, and are distributed on two sides of any longitudinal section passing through the central axis in the tower body of the evaporative cooler.
Further preferably, the energy plates are symmetrically distributed on two sides of any longitudinal section passing through the central axis in the tower body of the evaporative cooler, and the energy plates on the same side are mutually parallel.
More preferably, the energy plates are arranged in different widths and are placed in sequence.
The evaporative cooler further comprises a spraying device arranged above and/or below the energy plate, the spraying device comprises a conveying pipeline arranged outside the tower body, a spray head arranged inside the conveying pipeline, and a cold water inlet arranged on the side wall of the tower body, and 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 same spraying device of the existing equipment can be reserved above the energy plate, but the conventional time is stopped, and the heat exchange plate is recovered to be used when the heat exchange plate fails; a spraying device can be additionally arranged below the energy plate, the energy plate is limited in cooling, and water spraying is needed; in addition, when the energy plate is arranged on the upper, middle and lower sections of the whole section area inside the evaporative cooler tower body, a spraying device can be omitted below the energy plate, and the converter gas can be cooled to the temperature specified by the process without spraying water.
As the dust content in the converter gas is relatively large, the dust content is generally up to 150 g/m 3 The particles are larger, and even the particle size reaches more than 2mm, and the dust contains various metal elements, so that the abrasion of the dust to the wall surface is serious, and the metal particles can generate static electricity in collision and the like in the flowing process, and have adsorptivity and magnetism. The energy plates are arranged on the vertical wall surface, and the width of the windward surface of the energy plates is small, so that the energy plates do not occupy a lot of gas flow areas, namely, after the energy plates are arranged, the waste heat recovery is used for cooling the gas, and compared with the case that water vapor generated by original water spraying enters the gas, the flow rate of the gas after the energy plates are arranged is almost unchanged, and the abrasion to the energy plates caused by the fact that the flow rate of the gas is greatly increased is avoided.
The beneficial effects are that: compared with the prior art, the heat exchange tube can be protected by arranging the protection plate on the energy plate, so that the abrasion is reduced, the service life is prolonged, and the heat conduction effect is hardly influenced. Meanwhile, the straight fins are provided with large-area discontinuous vertical heat exchange surfaces, waste heat recovery can be carried out on high-temperature section gas in the converter gas evaporative cooler, the H-shaped fins can resist high dust-containing impact, the heat exchange area is increased, transverse scouring of dust-containing airflow to the heat exchange surfaces is achieved, the heat exchange effect is improved, meanwhile, the surfaces of the fins are vertical surfaces, the fins are discontinuous fins, dust accumulation is reduced, abrasion of dust to the heat exchange surfaces is reduced, grade-grade medium-high pressure saturated steam can be generated, the water spraying amount is reduced, the gas flow of an outlet of the evaporative cooler is reduced, and the subsequent treatment cost of the converter gas is reduced.
Drawings
FIG. 1 is a schematic view of the structure of the energy plate of the present utility model.
Fig. 2 is a schematic structural view (side cross-sectional view of fig. 1) of the energy panel of the present utility model.
FIG. 3 is a schematic view of the structure of a single H-shaped finned tube in a plate according to the present utility model.
Fig. 4 is a schematic view of the arrangement of the energy plate in the evaporative cooler (circumferentially distributed) according to the present utility model.
Fig. 5 is a schematic view (parallel) of the arrangement of the energy plate in the evaporative cooler according to the present utility model.
Fig. 6 is a schematic view of the location in an evaporative cooler in a power panel of the present utility model.
Detailed Description
The device according to the utility model is further described below with reference to the accompanying drawings.
Example 1
The utility model provides a protection type composite energy board that converter gas waste heat was retrieved was used, as shown in fig. 1 and 2, protection type composite energy board 1 mainly comprises heat exchange tube 11, straight fin 12, protection shield 13 and heat conduction medium 14, heat exchange tube 11 is level snakelike state, both ends opening is located respectively can the top and the bottom of board 1, every section level body is parallel to each other in the heat exchange tube 11, the body outer wall all is equipped with the straight fin 12 of a plurality of H shape that has vertical surface, protection shield 13 and the plane parallel arrangement of heat exchange tube 11 snakelike arrangement, and set up two, press from both sides all body in the middle of two protection shields 13 with heat exchange tube 11, heat conduction medium 14 is filled outside the heat exchange tube 11 in the middle of two protection shields 13, straight fin 12 sets up perpendicularly with protection shield 13 and passes protection shield 13. In addition, the straight fins 12 on different horizontal tube bodies of the heat exchange tube 11 are aligned up and down, and the lengths exposed out of the protection plate 13 are the same, so that a plurality of parallel discontinuous vertical surfaces are formed.
The two protection plates 13 are connected with the surface of the heat exchange tube 11, and an anti-wear device is arranged above the two protection plates, so that the abrasion of falling dust to the whole energy plate is reduced.
As shown in fig. 3, as an embodiment, the heat exchange tube 11 is a single H-shaped fin tube, and two long sides of the "H" shape are perpendicular to the protective plate 13, so that the length of the straight fin 12 exposed out of the protective plate 13 is longer, and the heat exchange effect is better.
The upper end opening of the heat exchange tube 11 is connected to an external drum, and the lower end opening of the heat exchange tube 11 is connected to the drum by a forced circulation pump, thereby forming a circulation path of the cooling medium.
The working principle of the energy plate is as follows:
the high-temperature converter gas is transferred to the heat exchange tube 11 after the heat release of the high-temperature converter gas is absorbed by the H-shaped straight fins 12 of the energy plate 1, the heat release of the converter gas is absorbed by the protection plate and then transferred to the heat conducting medium 14, and the heat conducting medium 14 transfers the heat to the heat exchange tube 11 and finally all the heat is transferred to water in the heat exchange tube 11. Saturated water from the steam drum is driven to be sent into the heat exchange tube 11 through the forced circulation pump, the saturated water becomes a steam-water mixture after absorbing the heat released by the coal gas, the steam is sent to the steam drum from the outlet at the upper end of the heat exchange tube 11, and after steam-water separation, the saturated steam is sent out, and the saturated water participates in circulation again. The protection plate 13 can protect the heat exchange tube, reduce abrasion and prolong the service life.
As shown in fig. 6, when the energy plate is applied, the energy plate is installed in the evaporative cooler, and the energy plate 1 is arranged in the upper area inside the tower body of the evaporative cooler 2, below the gas inlet and is arranged in a vertical wall shape. The energy plates 1 are all installed close to the inner wall of the tower body, so that the upper end opening and the lower end opening of the heat exchange tube 11 pass through the shell of the tower body to be communicated with an external steam drum.
As an embodiment, as shown in fig. 4, the energy plates 1 are uniformly distributed in the circumferential direction in the tower body of the evaporative cooler 2 and are placed radially. The vertical wall surface is suitable for the longitudinal flushing of external gas along the vertical plate surface. The energy plates 1 can be arranged to have different widths and are staggered, so that the space in the tower is highly effectively utilized, and the flushing speed of the gas from top to bottom is uniform.
As another embodiment, as shown in fig. 5, the energy plates 1 are symmetrically distributed on both sides of any longitudinal section passing through the central axis in the tower body of the evaporative cooler 2, and the energy plates on the same side are mutually parallel. The vertical wall surface is suitable for the longitudinal flushing of external gas along the vertical plate surface. The energy plates 1 can be arranged to have different widths and are placed in sequence to highly effectively utilize the space in the tower, so that the flushing speed of the gas 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 arranged outside the tower body, a spray head arranged inside the conveying pipeline, 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 a protection type composite energy board that converter gas waste heat was retrieved usefulness, its characterized in that, protection type composite energy board mainly comprises heat exchange tube (11), straight fin (12), protection shield (13) and heat conduction medium (14), heat exchange tube (11) are the snakelike state, straight fin (12) vertical setting is at the body outer wall of heat exchange tube (11), protection shield (13) and the plane parallel arrangement of heat exchange tube (11) snakelike arrangement, and set up two, with all body clamp of heat exchange tube (11) in the middle of two protection shields (13), heat exchange tube (11) outside packing heat conduction medium (14) in the middle of two protection shields (13), straight fin (12) are perpendicular and pass protection shield (13) with protection shield (13).
2. The protective type composite energy plate for recovering waste heat of converter gas according to claim 1, wherein the heat exchange tube (11) is in a horizontal serpentine state, openings at two ends are respectively positioned at the top and the bottom of the energy plate (1), each section of horizontal tube body in the heat exchange tube (11) is parallel to each other, a plurality of straight fins (12) with vertical surfaces are arranged on the outer wall of the tube body, and the straight fins (12) are H-shaped straight fins, are perpendicular to the protective plate (13) and penetrate through the protective plate (13).
3. The protective composite energy plate for recovering waste heat of converter gas according to claim 2, wherein the straight fins (12) on different horizontal tube bodies are aligned up and down, and the lengths exposed out of the protective plate (13) are the same, forming a plurality of parallel discontinuous vertical surfaces.
4. The protective composite energy plate for recovering waste heat of converter gas according to claim 2, wherein the heat exchange tube (11) is a single H-shaped fin tube, and two long sides of the H-shape are perpendicular to the protective plate (13).
5. An evaporative cooler comprising the protective composite energy plate for recovering waste heat of converter gas according to any one of claims 1 to 4, wherein the energy plate (1) is arranged in the tower body of the evaporative cooler (2), below a gas inlet and is arranged in a vertical wall shape.
6. An evaporative cooler according to claim 5, characterized in that the energy plate (1) is arranged in an upper region of the interior of the tower of the evaporative cooler (2), or in an entire region of the interior of the tower, in upper, middle and lower sections.
7. An evaporative cooler according to claim 5, characterized in that the energy plates (1) are distributed evenly in the circumferential direction within the tower of the evaporative cooler (2) and are placed radially.
8. The evaporative cooler according to claim 5, wherein the number of energy plates (1) is two or more, and the energy plates are distributed on both sides of a longitudinal section passing through the central axis in the tower body of the evaporative cooler (2).
9. An evaporative cooler according to claim 8, characterized in that the energy plates (1) are symmetrically distributed on both sides of the longitudinal section through the central axis in the tower of the evaporative cooler (2), and the energy plates in the same side are placed parallel to each other.
10. An evaporative cooler according to claim 9, characterized in that the energy plates (1) are arranged in different widths, placed in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320302860.5U CN219470092U (en) | 2023-02-23 | 2023-02-23 | Protection type composite energy plate for recovering waste heat of converter gas and evaporative cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320302860.5U CN219470092U (en) | 2023-02-23 | 2023-02-23 | Protection type composite energy plate for recovering waste heat of converter gas and evaporative cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219470092U true CN219470092U (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320302860.5U Active CN219470092U (en) | 2023-02-23 | 2023-02-23 | Protection type composite energy plate for recovering waste heat of converter gas and evaporative cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219470092U (en) |
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2023
- 2023-02-23 CN CN202320302860.5U patent/CN219470092U/en active Active
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