High-temperature particle efficient heat exchange device
By designing a high-temperature particle-efficient heat exchange device containing spiral ribs and spiral pallets, the problem of inefficiency of slag heat exchange on air in the prior art is solved, and efficient heat recovery and utilization is achieved.
Patent Information
- Application Number
- CN202420925408.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In the prior art, the heat exchange of slag particles inside the rotary drum is to exchange air heat, the heat in the air is easily lost, the heat exchange utilization rate is low, and it is not efficient and practical.
A high-efficiency heat exchange device for high-temperature particles is designed, including a heat exchange cylinder, a feed cylinder and a discharge cylinder. A group of spiral ribs and spiral pallets are provided on the inner wall of the heat exchange cylinder. A spiral rib plate is provided on the spiral pallet to achieve efficient heat exchange between slag particles and water.
Through this device, the heat of the blast furnace slag particles can be effectively transferred to water, which significantly improves the efficiency of heat recovery, and solves the problems of heat loss and low utilization in the prior art.
Smart Images
Figure CN222613366U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchange devices, in particular to a high-temperature particle high-efficiency heat exchange device. Background Art
[0002] At present, blast furnace slag is generally treated by water granulation and waste heat recovery. In the specification of the slag waste heat recovery device of the prior art (Announcement No. CN216786168U) with rotary countercurrent heat exchange, it is mentioned that "a rotary drum and a lifting plate for lifting materials located in the rotary drum; wherein the lifting plate is arranged in multiple circles along the inner wall of the rotary drum, the lifting plates in each circle are arranged at intervals, and the lifting plates in two adjacent circles are arranged in a space; the lifting plate is in a broken line shape, including a vertical part and a bending part, the length ratio of the bending part to the vertical part is 1: (2-4), and the length ratio of the lifting plate to the radius of the rotary drum is 1: (2-4)", but the slag heat exchange inside the rotary drum in the prior art is heat exchange with air, the heat in the air is easily lost, the heat exchange utilization rate is low, and it is not efficient and practical. Utility Model Content
[0003] In order to overcome the defects of the prior art, a high-temperature particle efficient heat exchange device is now provided to solve the problem that the slag particles in the rotary drum in the prior art exchange heat with the air, the heat in the air is easily lost, the heat exchange utilization rate is low, and it is not efficient and practical.
[0004] To achieve the above-mentioned purpose, a high-temperature particle high-efficiency heat exchange device is provided, including a heat exchange cylinder, a feed cylinder and a discharge cylinder, a plurality of groups of spiral ribs are arranged on the inner wall of the heat exchange cylinder, and a spiral support plate is arranged in each group of spiral ribs, and a spiral rib plate is arranged on the spiral support plate, a heat exchange cavity is arranged on the inner side of the heat exchange cylinder, and an outer cylinder water channel is arranged on the outer side of the heat exchange cylinder, a feed cylinder is arranged at the front end of the heat exchange cylinder, a steam accumulator is arranged between the heat exchange cylinder and the feed cylinder, and a discharge cylinder is arranged at the rear end of the heat exchange cylinder, and the feed cylinder and the discharge cylinder are connected to the heat exchange cylinder, and the heat exchange cylinder is inclined with the front higher and the rear lower.
[0005] Furthermore, a slag particle inlet is arranged at the upper portion of the feed barrel, a steam output rotary joint is arranged at the center of the front side surface of the heat exchange barrel, and a feed chute is arranged on the inner side wall of the feed barrel.
[0006] Furthermore, a front roller assembly and a steering roller assembly are arranged on the front side of the lower part of the outer ring surface of the heat exchanger tube, the front roller assembly is located on the front side of the steering roller assembly, and a tube rotation drive assembly is installed in the middle of the lower part of the outer ring surface of the heat exchanger tube, and a rear roller assembly is installed on the rear side of the lower part of the outer ring surface of the heat exchanger tube.
[0007] Furthermore, a slag particle outlet is provided in the middle of the lower part of the discharge barrel, a sewage outlet is provided on the front side of the lower part of the discharge barrel, a normal temperature water input rotary joint is provided in the middle of the rear side surface of the discharge barrel, and an ultrasonic descaling device inlet is provided in the middle of the upper part of the discharge barrel.
[0008] Furthermore, the inner end of the normal temperature water input rotary joint is provided with a diverter input component, the diverter input component is located in the discharge barrel, and the other port of the diverter input component leads to the outer barrel water channel, and a return pipe is provided on a side wall of the outer barrel water channel close to the heat exchange chamber, and the rear end of the return pipe leads to the heat exchange tube water inlet manifold.
[0009] Furthermore, a discharge chute is provided on the rear side wall of the heat exchange cavity of the heat exchange cylinder, and a plurality of groups of heat exchange tubes are provided on the inner wall of the heat exchange cavity in the heat exchange cylinder, and the heat exchange tubes are provided through the spiral support plate.
[0010] The beneficial effects of the utility model are:
[0011] 1. In the utility model, the feed barrel is positioned by connecting the fixing plate, and it and the water input component are sealed and operated by a group of elastic components. The feed chute arranged on the inner wall of the feed barrel is convenient for shaking the slag particles into the heat exchange barrel while rotating, and the feeding is more stable.
[0012] 2. In the utility model, the front roller assembly and the rear roller assembly are each provided with a rotating support at both ends of the main cylinder body, which is responsible for supporting the roller assembly; the direction roller assembly is responsible for the direction support of the roller assembly for stable operation; the drum rotation drive assembly is provided with a transmission combination of a small gear and a large gear in the middle of the main cylinder body, and the small gear is driven by the motor through the gearbox to realize the rotation of the roller assembly;
[0013] 3. The centerline of the main cylinder is designed to be about -2 degrees to the horizontal plane to ensure smooth transfer of blast furnace slag particles, smooth flow of steam output, and smooth discharge of heat exchange branch pipes.
[0014] 4. In the utility model, the heat exchange tube in the utility model conveys the slag particles after heat exchange to the discharge tube through the spiral rib plate on the rear side, and then conveys them out through the slag particle outlet; the water source is input from one end of the interlayer, and the water absorbs the heat of the inner tube wall and enters the heat exchange tube water inlet manifold through the return water pipe at the other end; through the implementation of this method, the input water is preliminarily heated, and at the same time the temperature of the outer tube is greatly reduced, which significantly improves the efficiency of heat recovery.
[0015] 5. Inject cleaning liquid into the heat exchange tube from the steam outlet and discharge the dirt from the drain outlet. Place the ultrasonic descaling device at the inlet of the heat exchange tube to descale and clean the surface of the heat exchange tube in the tube. By cleaning the internal and external circuits of the heat exchange tube, long-term and efficient heat exchange of the heat exchange tube is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;
[0017] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;
[0018] Figure 3 It is a left side schematic diagram of an embodiment of the utility model;
[0019] Figure 4 It is a BB cross-sectional schematic diagram of an embodiment of the utility model.
[0020] In the figure: 1. Slag particle inlet; 2. Heat exchange cylinder; 3. Spiral ribs; 4. Spiral support plate; 5. Spiral rib plate; 6. Discharge chute; 7. Slag particle outlet; 8. Normal temperature water input rotary joint; 9. Diversion input assembly; 10. Heat exchange tube water inlet manifold; 11. Heat exchange tube; 12. Outer cylinder water channel; 13. Return pipe; 14. Steam accumulator; 15. Steam output rotary joint; 16. Front roller assembly; 17. Direction roller assembly; 18. Cylinder rotation drive assembly; 19. Rear roller assembly; 20. Feed chute; 21. Drain port; 22. Sonic descaling device inlet; 23. Feed cylinder; 24. Discharge cylinder. DETAILED DESCRIPTION
[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.
[0022] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.
[0023] Figure 1 It is a front view schematic diagram of an embodiment of the utility model, Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model, Figure 3 The left side schematic diagram of the utility model embodiment and Figure 4 It is a BB cross-sectional schematic diagram of an embodiment of the utility model.
[0024] Reference Figures 1 to 4As shown, the utility model provides a high-temperature particle high-efficiency heat exchange device, including a heat exchange cylinder 2, a feed cylinder 23 and a discharge cylinder 24, a plurality of groups of spiral ribs 3 are arranged on the inner wall of the heat exchange cylinder 2, and a spiral support plate 4 is arranged in each group of spiral ribs 3, and a spiral rib plate 5 is arranged on the spiral support plate 4, a heat exchange cavity is arranged on the inner side of the heat exchange cylinder 2, and an outer cylinder water channel 12 is arranged on the outer side of the heat exchange cylinder 2, a feed cylinder 23 is arranged at the front end of the heat exchange cylinder 2, a steam accumulator 14 is arranged between the heat exchange cylinder 2 and the feed cylinder 23, and a discharge cylinder 24 is arranged at the rear end of the heat exchange cylinder 2, and the feed cylinder 23 and the discharge cylinder 24 are both arranged in communication with the heat exchange cylinder 2, and the heat exchange cylinder 2 is arranged with a high front and a low rear.
[0025] In this embodiment, a slag inlet 1 is provided at the upper portion of the feed barrel 23 , a steam output rotary joint 15 is provided at the center of the front side of the heat exchange barrel 2 , and a feed chute 20 is provided on the inner side wall of the feed barrel 23 .
[0026] As a preferred embodiment, the feed barrel in the utility model is positioned by connecting a fixed plate, and it and the water input component are sealed by a group of elastic components. The feed chute 20 arranged on the inner wall of the feed barrel 23 facilitates the slag particles to be shaken off into the heat exchange barrel 2 while rotating, and the subsequent feeding is more stable.
[0027] In this embodiment, a front roller assembly 16 and a steering roller assembly 17 are provided on the front side of the lower part of the outer ring surface of the heat exchange tube 2, the front roller assembly 16 is located on the front side of the steering roller assembly 17, and a tube rotation drive assembly 18 is installed in the middle of the lower part of the outer ring surface of the heat exchange tube 2, and a rear roller assembly 19 is installed on the rear side of the lower part of the outer ring surface of the heat exchange tube 2.
[0028] As a preferred embodiment, the front roller assembly 16 and the rear roller assembly 19 in the utility model are each provided with a rotation support at both ends of the main cylinder body, which is responsible for supporting the roller assembly; the direction roller assembly 17 is responsible for the direction support of the roller assembly to run stably; the cylinder rotation drive assembly 18 is provided in the middle of the main cylinder body with a transmission combination of a small gear and a large gear, and the small gear is driven by the motor through the gearbox to realize the rotation of the roller assembly;
[0029] In addition, the centerline of the main cylinder is designed to be about -2 degrees to the horizontal plane to ensure smooth transfer of blast furnace slag particles, smooth flow of steam output, and smooth discharge of heat exchange branch pipes.
[0030] In this embodiment, a slag particle outlet 7 is provided in the middle of the lower part of the discharge barrel 24, and a sewage outlet 21 is provided on the front side of the lower part of the discharge barrel 24, and a normal temperature water input rotary joint 8 is provided in the middle of the rear side surface of the discharge barrel 24, and a heat exchange barrel 2 is provided in the middle of the upper part of the discharge barrel 24; a diversion input component 9 is provided at the inner end of the normal temperature water input rotary joint 8, and the diversion input component 9 is located in the discharge barrel 24, and the other port of the diversion input component 9 leads to the outer barrel water channel 12, and a return pipe 13 is provided on a side wall of the outer barrel water channel 12 close to the heat exchange cavity, and the rear end of the return pipe 13 leads to the heat exchange tube inlet manifold 10; a discharge chute 6 is provided on the rear side wall of the heat exchange cavity in which the heat exchange barrel 2 is provided, and a plurality of groups of heat exchange tubes 11 are provided on the inner wall of the heat exchange cavity in the heat exchange barrel 2, and the heat exchange tubes 11 are provided through the spiral support plate 4.
[0031] As a preferred embodiment, the heat exchange tube 2 in the utility model transports the slag particles after heat exchange to the discharge tube 24 through the spiral rib plate 5 on the rear side, and then transports them out through the slag particle outlet 7; the water source is input from one end of the interlayer, and the water absorbs the heat of the inner tube wall and enters the heat exchange tube inlet manifold 10 through the return water pipe 13 at the other end; through the implementation of this method, the input water is preliminarily heated, and at the same time the temperature of the outer tube is greatly reduced, which significantly improves the efficiency of heat recovery.
[0032] Cleaning liquid is injected into the heat exchange tube from the steam outlet, and dirt is discharged from the drain port 21. The ultrasonic descaling device is placed at the ultrasonic descaling device inlet 22 outside the heat exchange tube to descale and clean the surface of the heat exchange tube in the tube. By cleaning the internal and external circuits of the heat exchange tube, long-term and efficient heat exchange of the heat exchange tube is guaranteed.
[0033] Working principle:
[0034] Slag particles are transferred and heat is released; the device rotates as required, and high-temperature solid blast furnace slag particles enter the feed chamber from the slag particle inlet 1, and the slag particles are transferred to the heat exchange tube 2 under the action of the feed chute 20; the slag particles are transferred backward under the action of the spiral rib plate 5, and the slag particles enter the discharge chute after a certain period of time, and the slag particles are transferred to the slag particle outlet 7 in the discharge tube 24 under the action of the discharge chute for discharge.
[0035] Water vapor absorbs heat and transfers; it is assumed that the pressure of water vapor conveying to the steam network is 1.2MPa. The room-temperature water of the water source is input into the diversion input component 9 through the hose and the room-temperature water input rotary joint 8, and then enters the outer tube water channel 12. After absorbing the heat of the inner tube wall, the water enters the heat exchange tube water inlet distributor 10 through the return pipe 13. The water distributor supplies water to each heat exchange branch pipe. The high-temperature solid blast furnace slag particles transfer heat energy to the water through the wall of the heat exchange branch pipe, so that the water is heated and vaporized. The vaporized steam is output through the steam accumulator 14, the steam output rotary joint 15, the front roller assembly 16 and the hose.
[0036] The utility model can effectively solve the problem in the prior art that the heat exchange of slag particles inside the rotary drum is to exchange heat with air, the heat in the air is easily lost, the heat exchange utilization rate is low, and it is not efficient and practical. The blast furnace slag particles are changed into high-temperature solid slag particles, and the heat energy on one side is transferred to the water on the other side through the pipe wall through heat conduction. The water is vaporized into clean steam and then transported to the steam network for standby use, thereby realizing the waste heat recovery of high-temperature gas and high-temperature slag particles in the slag granulation process, and greatly improving the waste heat recovery efficiency.
[0037] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.
Claims
1. A high-temperature particle high-efficiency heat exchange device, characterized in that: The invention comprises a heat exchange cylinder (2), a feed cylinder (23) and a discharge cylinder (24), wherein a plurality of groups of spiral ribs (3) are arranged on the inner wall of the heat exchange cylinder (2), and a spiral support plate (4) is arranged in each group of spiral ribs (3), and a spiral rib plate (5) is arranged on the spiral support plate (4), a heat exchange cavity is arranged on the inner side of the heat exchange cylinder (2), and an outer cylinder water channel (12) is arranged on the outer side of the heat exchange cylinder (2), a feed cylinder (23) is arranged at the front end of the heat exchange cylinder (2), a steam accumulator (14) is arranged between the heat exchange cylinder (2) and the feed cylinder (23), and a discharge cylinder (24) is arranged at the rear end of the heat exchange cylinder (2), and the feed cylinder (23) and the discharge cylinder (24) are both arranged in communication with the heat exchange cylinder (2), and the heat exchange cylinder (2) is arranged to be higher at the front and lower at the rear.
2. A high-temperature particle high-efficiency heat exchange device according to claim 1, characterized in that: The upper portion of the feed barrel (23) is provided with a slag particle inlet (1), the center of the front side surface of the heat exchange barrel (2) is provided with a steam output rotary joint (15), and the inner side wall of the feed barrel (23) is provided with a feed chute (20).
3. A high-temperature particle high-efficiency heat exchange device according to claim 1, characterized in that: A front roller assembly (16) and a direction roller assembly (17) are arranged on the front side of the lower part of the outer ring surface of the heat exchange cylinder (2), the front roller assembly (16) is located on the front side of the direction roller assembly (17), and a cylinder rotation drive assembly (18) is installed in the middle of the lower part of the outer ring surface of the heat exchange cylinder (2), and a rear roller assembly (19) is installed on the rear side of the lower part of the outer ring surface of the heat exchange cylinder (2).
4. A high-temperature particle high-efficiency heat exchange device according to claim 1, characterized in that: A slag particle outlet (7) is provided in the middle of the lower part of the discharge barrel (24), a sewage outlet (21) is provided on the front side of the lower part of the discharge barrel (24), a normal temperature water input rotary joint (8) is provided in the middle of the rear side of the discharge barrel (24), and a sonic descaling device inlet (22) is provided in the middle of the upper part of the discharge barrel (24).
5. A high-temperature particle high-efficiency heat exchange device according to claim 4, characterized in that: The inner end of the normal temperature water input rotary joint (8) is provided with a flow splitting input component (9), the flow splitting input component (9) is located in the discharge barrel (24), and the other end of the flow splitting input component (9) leads to the outer barrel water channel (12), and a return water pipe (13) is provided on a side wall of the inner part of the outer barrel water channel (12) close to the heat exchange chamber, and the rear end of the return water pipe (13) leads to the heat exchange tube water inlet manifold (10).
6. A high-temperature particle high-efficiency heat exchange device according to claim 1, characterized in that: A discharge chute (6) is provided on the rear side wall of the heat exchange cavity provided in the heat exchange cylinder (2), and a plurality of groups of heat exchange tubes (11) are provided on the inner wall of the heat exchange cavity provided in the heat exchange cylinder (2), and the heat exchange tubes (11) are provided through the spiral support plate (4).