Air-water spraying device for conveying and cooling in blast furnace slag granulation process
By using an air-water spray device during blast furnace slag granulation, the spray port angle is 30~60°, and the spray direction is the same as the slag flow field, the problem of slag bonding and wear is solved, and efficient cooling and smooth granulation are achieved. , extends the service life of the system.
Patent Information
- Application Number
- CN202323621052.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-29
AI Technical Summary
During the blast furnace slag granulation process, the slag granulation bonds to each other, causing severe wear of the inner wall of the deflector cylinder, the granulation process is not smooth, and even the channels are blocked, so that the system cannot work normally.
Design an air-water spray device, including a flow guide cylinder, internal cooling chamber, mixture flow field, temperature insulation layer, water impact blast furnace slag granulation area and air-water atomization spray gun, the jet port angle is 30~60°, spraying The direction is the same as the slag flow field, and the air-water atomization is used to reduce the bonding and wear of slag.
It effectively reduces the temperature of the inner wall of the diversion cylinder, reduces wear, improves the service life of the system, and ensures the smoothness and economicality of the granulation process.
Smart Images
Figure CN222250798U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air-water spraying, in particular to an air-water spraying device used for conveying and cooling the slag granulation process of a blast furnace. Background Art
[0002] With the advancement of science and technology, the industrial blast furnace slag, which was originally directly discarded, was later granulated with new technology and used as raw materials for other industrial products; the hot steam generated in the slag granulation process was purified and heat-exchanged, so that its heat energy was transferred to industrial online raw materials such as oxygen and coal gas for use, saving a lot of production costs. However, the waste heat of high-temperature blast furnace slag particles has not been effectively recovered.
[0003] The latest developed blast furnace slag granulation waste heat recovery system uses water at a certain pressure to impact the slag for granulation, but there are still some problems with the granulation performance: the blast furnace slag in the prior art is partially bonded to each other into different shapes after granulation, and the inner wall of the guide tube has a tendency to be sticky with slag particles. At the same time, the slag particles impact the inner wall of the guide tube, causing it to be severely worn. Therefore, the granulation process is still not smooth, and even the channel is blocked, and the system cannot work normally. Utility Model Content
[0004] In order to overcome the defects of the prior art, an air-water spray device for conveying and cooling the blast furnace slag granulation process is provided to solve the problem in the prior art that after granulation, some of the blast furnace slag particles are adhered to each other into different shapes, and the inner wall of the guide tube has a tendency to stick to the slag particles. At the same time, the slag particles impact the inner wall of the guide tube, causing it to be severely worn. Therefore, the granulation process is still not smooth, and even the channel is blocked, and the system cannot work normally.
[0005] To achieve the above-mentioned purpose, an air-water spray device for conveying and cooling the blast furnace slag granulation process is provided, comprising a guide tube and an air-water atomizing spray gun subassembly, an inner cooling chamber is opened in the guide tube, and a mixed flow field is arranged in the center of the inner cooling chamber, an inner wall of the guide tube is provided with a thermal insulation layer, and a water impact blast furnace slag granulation zone is arranged at the front of the guide tube, a granulating water jet device is installed in the middle of the front of the water impact blast furnace slag granulation zone, and the injection port of the granulating water jet device leads to the front of the mixed flow field, a plurality of groups of air-water atomizing spray gun subassemblies are arranged on the inner side wall of the guide tube, and a mounting seat is provided on the outer side of the air-water atomizing spray gun subassembly, and an air-water atomizing spray gun is sleeved in the mounting seat.
[0006] Furthermore, a water inlet is provided at the upper end of the air-water atomization spray gun, and an injection nozzle is provided at the lower end of the air-water atomization spray gun, and the injection angle of the air-water atomization spray gun is set to 30-60°.
[0007] Furthermore, the nozzle direction of the air-water atomizing spray gun is the same as the flow field direction of blast furnace slag granulation, and the axis of the air-water atomizing spray gun is set to form a certain angle with the central axis of the guide tube, and the angle is set to 20~30° according to the installation seat.
[0008] Furthermore, a sleeve hole is provided in the mounting seat, and the air-water atomizing spray gun is sleeved in the sleeve hole, and the air-water atomizing spray gun and the sleeve hole are detachably connected.
[0009] Furthermore, an air cavity is arranged on the outer side of the air-water atomization spray gun, and a compressed air inlet is arranged on the upper right side of the air cavity.
[0010] Furthermore, the thermal insulation layer is made of high-density sponge material.
[0011] The beneficial effects of the utility model are:
[0012] 1. In the utility model, the jet mist field of the gas-water spray is closely mixed with the flow field of the blast furnace slag particles, the spray water droplets are vaporized to take away the heat, and the slag particles are further cooled.
[0013] 2. The jet direction of the gas-water spray of the gas-water atomizing spray gun in the utility model is the same as the flow field direction of the blast furnace slag granulation, so that the flow field tube bundle of the gas-water spray promotes the movement and transportation of the flow field of the blast furnace slag granulation, plays a positive role in the smooth jetting of the flow field of the blast furnace slag granulation to the position of the next process, and reduces the wear of the inner tube wall.
[0014] 3. The utility model simultaneously realizes the humidification of the inner wall of the guide tube by air-water spray, so that the temperature of the inner wall of the guide tube is reduced, the high strength of the wall is maintained, the speed of wear is reduced, and the service life of the tube is increased; after the wall is humidified, the high-temperature slag particles are eliminated from sticking.
[0015] 4. The purpose of setting the temperature insulation layer in the utility model is to reduce the influence of the outside temperature on the cooling environment in the guide tube, making it safer and more reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the internal structure of the guide tube according to an embodiment of the utility model;
[0017] Figure 2 This is a cross-sectional schematic diagram of a small assembly of an air-water atomizing spray gun according to an embodiment of the utility model;
[0018] Figure 3 This is a rendering of the installation seat according to an embodiment of the utility model.
[0019] In the figure: 1. guide tube; 10. inner cooling chamber; 11. mixed flow field; 12. thermal insulation layer; 13. water impact blast furnace slag granulation zone; 14. granulation water jet device; 2. air-water atomizing spray gun subassembly; 20. mounting seat; 21. air-water atomizing spray gun; 22. water inlet; 23. air cavity; 24. compressed air inlet; 25. spray nozzle; 26. sleeve hole. DETAILED DESCRIPTION
[0020] 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.
[0021] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.
[0022] Figure 1 This is a schematic diagram of the internal structure of the guide tube of the utility model embodiment. Figure 2 The schematic cross-sectional view of the air-water atomizing spray gun subassembly of the utility model embodiment and Figure 3 This is a rendering of the installation seat according to an embodiment of the utility model.
[0023] Reference Figures 1 to 3 As shown, the utility model provides an air-water spray device for conveying and cooling the blast furnace slag granulation process, comprising a guide tube 1 and an air-water atomizing spray gun subassembly 2, an inner cooling chamber 10 is opened in the guide tube 1, and a mixed flow field 11 is arranged at the center of the inner cooling chamber 10, an inner wall of the guide tube 1 is provided with a thermal insulation layer 12, and a water impact blast furnace slag granulation zone 13 is arranged at the front of the guide tube 1, a granulating water jet device 14 is installed in the middle of the front part of the water impact blast furnace slag granulation zone 13, and the injection port of the granulating water jet device 14 leads to the front part of the mixed flow field 11, a plurality of groups of air-water atomizing spray gun subassemblies 2 are arranged on the inner side wall of the guide tube 1, and a mounting seat 20 is arranged on the outer side of the air-water atomizing spray gun subassembly 2, and an air-water atomizing spray gun 21 is sleeved in the mounting seat 20.
[0024] In this embodiment, a water inlet 22 is provided at the upper end of the air-water atomizing spray gun 21, and a spray nozzle 25 is provided at the lower end of the air-water atomizing spray gun 21, and the spray angle of the air-water atomizing spray gun 21 is set to 30-60 degrees.
[0025] As a preferred implementation, the jet mist field of the gas-water spray in the utility model is closely mixed with the flow field of the blast furnace slag particles, the spray water droplets are vaporized to take away the heat, and the slag particles are further cooled.
[0026] In this embodiment, the nozzle installation direction of the air-water atomizing spray gun 21 is the same as the flow field direction of the blast furnace slag granulation, and the axis of the air-water atomizing spray gun 21 is set to form a certain angle with the central axis of the guide tube, and the angle is set to 20~30° according to the installation seat.
[0027] As a preferred embodiment, the jet direction of the gas-water spray of the gas-water atomizing spray gun 21 in the utility model is the same as the flow field direction of the blast furnace slag granulation, so that the flow field tube bundle of the gas-water spray promotes the movement and transportation of the flow field of the blast furnace slag granulation, plays a positive role in the smooth jetting of the flow field of the blast furnace slag granulation to the position of the next process, and reduces the wear of the inner tube wall.
[0028] In this embodiment, a sleeve hole 26 is opened in the mounting seat 20, and the air-water atomization spray gun 21 is sleeved in the sleeve hole 26, and the air-water atomization spray gun 21 and the sleeve hole 26 are split and connected; an air cavity 23 is arranged on the outside of the air-water atomization spray gun 21, and a compressed air inlet 24 is arranged on the upper right side of the air cavity 23.
[0029] As a preferred implementation method, the utility model simultaneously realizes the humidification of the inner wall of the guide tube by air-water spray, thereby reducing the temperature of the inner wall of the guide tube, maintaining the high strength of the wall, reducing the rate of wear, and increasing the service life of the tube; after the wall is humidified, the high-temperature slag particles are eliminated from sticking.
[0030] In this embodiment, the thermal insulation layer 12 is made of high-density sponge material.
[0031] As a preferred implementation, the thermal insulation layer 12 of the present invention is provided to reduce the influence of the outside temperature on the cooling environment in the guide tube 1, making the use of the guide tube 1 safer and more reliable.
[0032] The utility model can effectively solve the problem in the prior art that after granulation, some slag particles are adhered to each other into different shapes, the inner wall of the guide tube is occupied by slag particles, and at the same time, the slag particles impact the inner wall of the guide tube, causing it to be severely worn, so the granulation process is still not smooth, and even the channel is blocked, and the system cannot work normally. The inner wall of the guide tube in the utility model is free of slag particles, so the slag particles impact the inner wall of the guide tube to cause wear, and the flow field of the blast furnace slag is suspended and moved according to the trajectory of the Huhe flow field after the blast furnace molten slag is granulated, and the water consumption of air-water atomization is low, the efficiency of water evaporation is high, the granulation process is smooth, the cost is low, and it is more economical and practical.
[0033] 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. An air-water spraying device for conveying and cooling blast furnace slag granulation process, characterized in that: The invention comprises a guide tube (1) and an air-water atomizing spray gun subassembly (2), wherein an inner cooling chamber (10) is provided in the guide tube (1), and a mixed flow field (11) is arranged at the center of the inner cooling chamber (10), an inner wall of the guide tube (1) is provided with a thermal insulation layer (12), and a water-impact blast furnace slag granulation zone (13) is arranged at the front of the guide tube (1), a granulating water jet device (14) is installed in the middle of the front of the water-impact blast furnace slag granulation zone (13), and the injection port of the granulating water jet device (14) leads to the front of the mixed flow field (11), a plurality of groups of air-water atomizing spray gun subassemblies (2) are arranged on the inner side wall of the guide tube (1), and a press-fit seat (20) is arranged on the outer side of the air-water atomizing spray gun subassembly (2), and an air-water atomizing spray gun (21) is sleeved in the press-fit seat (20).
2. The air-water spraying device for conveying and cooling blast furnace slag granulation process according to claim 1 is characterized in that: The upper end of the air-water atomizing spray gun (21) is provided with a water inlet (22), and the lower end of the air-water atomizing spray gun (21) is provided with a spray nozzle (25), and the spray angle of the air-water atomizing spray gun (21) is set to 30-60 degrees.
3. The air-water spraying device for conveying and cooling blast furnace slag granulation process according to claim 1 is characterized in that: The nozzle installation direction of the air-water atomizing spray gun (21) is the same as the flow field direction of the blast furnace slag granulation, and the axis of the air-water atomizing spray gun (21) is arranged to form a certain angle with the central axis of the guide tube, and the angle is set to be 20-30° according to the installation seat.
4. The air-water spraying device for conveying and cooling blast furnace slag granulation process according to claim 1 is characterized in that: A sleeve hole (26) is provided in the mounting seat (20), and the air-water atomizing spray gun (21) is sleeved in the sleeve hole (26), and the air-water atomizing spray gun (21) and the sleeve hole (26) are detachably connected.
5. The air-water spraying device for conveying and cooling blast furnace slag granulation process according to claim 1 is characterized in that: An air cavity (23) is provided on the outside of the air-water atomization spray gun (21), and a compressed air inlet (24) is provided on the upper right side of the air cavity (23).
6. The air-water spraying device for conveying and cooling blast furnace slag granulation process according to claim 1 is characterized in that: The thermal insulation layer (12) is made of high-density sponge material.