A sintering ring cooling machine waste heat recovery equipment
Patent Information
- Application Number
- CN202522466139.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-20
AI Technical Summary
传统环冷机多采用单一排放或简单换热方式处理烟气，存在余热回收效率低、能源浪费严重的问题，且未对烟气进行有效过滤处理，杂质易附着在换热设备内壁，导致换热效率下降、设备故障频发，同时，直接排放的烟气会造成热污染与环境压力，不符合当前环保政策要求，还存在冷却不均匀影响烧结矿质量、系统运维复杂等弊端；因此，研发一种兼具高效余热回收、烟气过滤净化、零排放及便捷运维功能的环冷机余热回收设备，成为行业内亟待解决的技术需求
1、本实用新型通过装置内设置有换热组件，通过余热锅炉对环冷一段和环冷二段的烟气进行充分换热并由风机引至环冷二段和环冷三段底部风箱，环冷三段热风引至环冷一段底部风箱，环冷五段烟气与矿料换热后送至环冷四段底部风箱，能够实现对环冷机的多重余热回收，回收系统相比原来梯级提高了余热回收的热量，同时也实现了环冷机零排放，降低企业环保合规成本与处罚风险，减少能源浪费，提升整体生产流程的能源利用效率。
Smart Images
Figure CN224860908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sintered ore cooling and waste heat recovery technology, and in particular to a waste heat recovery device for a sintering ring cooler. Background Technology
[0002] In industrial production such as iron and steel smelting, sintered ore needs to be cooled by an annular cooler before it can enter the subsequent processes. The annular cooler generates a large amount of high-temperature flue gas when it is working, which contains abundant waste heat resources. Traditional annular coolers often use single-emission or simple heat exchange methods to treat flue gas, resulting in low waste heat recovery efficiency, serious energy waste, and ineffective filtration of the flue gas. Impurities easily adhere to the inner wall of the heat exchange equipment, leading to decreased heat exchange efficiency and frequent equipment failures. At the same time, the direct emission of flue gas causes thermal pollution and environmental pressure, which does not comply with current environmental protection policies. It also has drawbacks such as uneven cooling affecting the quality of sintered ore and complex system operation and maintenance. Therefore, the development of annular cooler waste heat recovery equipment that combines high-efficiency waste heat recovery, flue gas filtration and purification, zero emissions, and convenient operation and maintenance has become an urgent technical need to be addressed in the industry. Utility Model Content
[0003] The purpose of this invention is to provide a waste heat recovery device for a sintering ring cooler to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: Design a waste heat recovery device for a sintering ring cooler, including a ring cooler body, a ring cooler fan, a heat exchange component, and a filter component. The ring cooler body is divided into five ring cooler sections from left to right. Three sets of ring cooler fans are provided and fixed at the lower ends of the ring cooler sections two, three, and five respectively. The heat exchange component is connected to the outside of the ring cooler body, and the filter component is connected to the heat exchange component. The heat exchange assembly includes a first flue, a waste heat boiler, a duct, a first fan, a second flue, a second fan, a third flue, and a third fan. One end of the first flue is connected to the output ends of the first and second sections of the annular cooling system, and the other end is connected to the input end of the waste heat boiler. The first fan is connected via a duct between the output end of the waste heat boiler and the input ends of the second and third sections of the annular cooling system. The second flue is connected to the output end of the third section of the annular cooling system. The second fan is connected via a duct between the second flue and the first section of the annular cooling system. The third flue is connected to the output end of the fifth section of the annular cooling system. The third fan is connected via a duct between the third flue and the fourth section of the annular cooling system.
[0005] Preferably, the filter assembly includes a filter box, a filter screen, a sealing cover, and a handle. The filter box is connected to the middle section of the first flue. The filter box has an installation port, the filter screen is inserted into the installation port, and a sealing cover is fixed to the installation port, with a handle at the upper end of the sealing cover.
[0006] Preferably, the inner walls of the first, second, third, fourth and fifth annular cooling sections are all provided with a high-temperature resistant heat insulation layer, which is made of ceramic fiber material.
[0007] Preferably, the outer walls of the first flue, the second flue, the third flue, and the duct are all wrapped with thermal insulation cotton, and sealing gaskets are provided at the pipe connections.
[0008] Preferably, the filter assembly further includes a permanent magnet, which is fixed to the side of the sealing cover near the installation port. The permanent magnet has a ring structure design and is magnetically attached to the outer wall of the filter box.
[0009] Preferably, a sealing gasket structure is attached between the outer periphery of the filter screen and the inner wall of the filter box, and an anti-slip rubber sleeve is provided on the handle.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model incorporates a heat exchange component within the device. A waste heat boiler fully exchanges heat with the flue gas from the first and second sections of the annular cooler, which is then drawn by a fan to the bottom air boxes of the second and third sections. Hot air from the third section is drawn to the bottom air box of the first section, and the flue gas from the fifth section exchanges heat with the ore before being sent to the bottom air box of the fourth section. This enables multiple waste heat recovery from the annular cooler. Compared to the original cascade system, this increases the amount of heat recovered and achieves zero emissions from the annular cooler, reducing environmental compliance costs and penalties for enterprises, minimizing energy waste, and improving the overall energy efficiency of the production process.
[0011] 2. This utility model incorporates a filter assembly within the device. The filter screen filters the flue gas about to enter the waste heat boiler through the first flue. The filter screen is easily pulled out through the installation port and magnetically secured by a sealing cover and a permanent magnet. This allows for the filtration and removal of impurities from the waste heat flue gas. Simultaneously, the filter screen can be quickly disassembled for cleaning or replacement, facilitating the maintenance of the waste heat boiler's internal cleanliness, reducing the decrease in heat exchange efficiency caused by impurities, ensuring the continuous and stable operation of the heat exchange system, and guaranteeing the cleanliness of the flue gas entering the waste heat boiler.
[0012] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description
[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure according to the present utility model; Figure 2 This is an exploded view of the front structure according to the present invention; Figure 3 This is an exploded view of the rear structure according to the present invention; Figure 4 This is an exploded view of the filter assembly according to the present invention.
[0014] In the diagram: 1. Main body of the annular cooler; 11. First stage of annular cooling; 12. Second stage of annular cooling; 13. Third stage of annular cooling; 14. Fourth stage of annular cooling; 15. Fifth stage of annular cooling; 2. Annular cooler fan; 3. Heat exchange components; 31. First flue; 32. Waste heat boiler; 33. Duct; 34. First fan; 35. Second flue; 36. Second fan; 37. Third flue; 38. Third fan; 4. Filter components; 41. Filter box; 42. Mounting port; 43. Filter screen; 44. Sealing cover; 45. Handle; 46. Permanent magnet. Detailed Implementation
[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0016] like Figure 1-4 As shown, this embodiment provides a waste heat recovery device for a sintering ring cooler, including a ring cooler body 1, a ring cooler fan 2, a heat exchange component 3, and a filter component 4. The ring cooler body 1 is divided into a ring cooler section 11, a ring cooler section 2 12, a ring cooler section 3 13, a ring cooler section 4 14, and a ring cooler section 5 15 from left to right. The ring cooler fan 2 is provided in three sets and is fixed at the lower end of the ring cooler section 2 12, the ring cooler section 3 13, and the ring cooler section 5 15 respectively. The heat exchange component 3 is connected to the outside of the ring cooler body 1, and the filter component 4 is connected to the heat exchange component 3. In this embodiment, the heat exchange assembly 3 includes a first flue 31, a waste heat boiler 32, a duct 33, a first fan 34, a second flue 35, a second fan 36, a third flue 37, and a third fan 38. One end of the first flue 31 is connected to the output ends of the first and second annular cooling sections 11 and 12, and the other end is connected to the input end of the waste heat boiler 32. The first fan 34 is connected via the duct 33 to the output end of the waste heat boiler 32 and the input ends of the second and third annular cooling sections 12 and 13. The second flue 35 is connected to the output end of the third section of the annular cooling system 13. The second fan 36 is connected between the second flue 35 and the first section of the annular cooling system 11 via a duct 33. The third flue 37 is connected to the output end of the fifth section of the annular cooling system 15. The third fan 38 is connected between the third flue 37 and the fourth section of the annular cooling system 14 via a duct 33. The inner walls of the first section 11, the second section 12, the third section 13, the fourth section 14, and the fifth section 15 of the annular cooling system are all provided with a high-temperature resistant insulation layer. Made of ceramic fiber material, the outer walls of the first flue 31, second flue 35, third flue 37, and duct 33 are all wrapped with thermal insulation cotton, and sealing gaskets are installed at the pipe connections. The waste heat boiler 32 fully exchanges heat with the flue gas from the first and second annular cooling sections 11 and 12, and the gas is then led by a fan to the bottom air boxes of the second and third annular cooling sections 12 and 13. The hot air from the third annular cooling section 13 is led to the bottom air box of the first annular cooling section 11. The flue gas from the fifth annular cooling section 15 exchanges heat with the ore and is then sent to the bottom air box of the fourth annular cooling section 14. This system enables multiple waste heat recovery from the annular cooler. Compared with the original cascade system, the system has increased the amount of waste heat recovered and also achieved zero emissions from the annular cooler. This reduces the company's environmental compliance costs and penalty risks, reduces energy waste, improves the overall energy efficiency of the production process, optimizes the ore cooling effect, ensures the stability of product quality in subsequent production stages, simplifies environmental treatment processes, and further improves the economy and convenience of production operations.
[0017] In this embodiment, the filter assembly 4 includes a filter box 41, a filter screen 43, a sealing cover 44, and a handle 45. The filter box 41 is connected to the middle section of the first flue 31. The filter box 41 has an installation port 42. The filter screen 43 is inserted into the installation port 42. The sealing cover 44 is fixed on the installation port 42, and a handle 45 is provided on the upper end of the sealing cover 44. The filter assembly 4 also includes a permanent magnet 46. The permanent magnet 46 is fixed on the side of the sealing cover 44 near the installation port 42. The permanent magnet 46 has a ring structure design and is magnetically attached to the outer wall of the filter box 41. A sealing gasket structure is attached between the outer periphery of the filter screen 43 and the inner wall of the filter box 41. The handle 45 is fitted with an anti-slip sleeve. The rubber sleeve filters the flue gas that is about to enter the waste heat boiler 32 through the filter screen 43. The filter screen 43 is easy to pull out through the installation port 42 and is magnetically fixed by the sealing cover 44 and the permanent magnet 46. It can filter and remove impurities from the waste heat flue gas, and at the same time, it can quickly disassemble, clean or replace the filter screen 43. This makes it easy to keep the inside of the waste heat boiler 32 clean, reduce the heat exchange efficiency caused by the adhesion of impurities, extend the service life of the equipment, reduce the risk of failure caused by impurities clogging pipes or components, ensure the continuous and stable operation of the heat exchange system, ensure the cleanliness of the flue gas entering the waste heat boiler 32, and indirectly improve the waste heat recovery efficiency.
[0018] The working principle and process of this utility model are as follows: When in use, the equipment is first started. The main body of the annular cooler 1, from the first annular cooling section 11 to the fifth annular cooling section 15, cools the ore material step by step, with the annular cooling fan 2 providing auxiliary ventilation. The high-temperature flue gas from the first annular cooling section 11 and the second annular cooling section 12 is transported through the first flue 31, where impurities are first filtered by the filter screen 43 of the filter assembly 4, and then enters the waste heat boiler 32 for heat exchange. After heat exchange, the flue gas is led through the first fan 34 and the duct 33 to the bottom air box of the second annular cooling section 12 and the third annular cooling section 13. The hot air from the third annular cooling section 13 is sent to the bottom air box of the first annular cooling section 11 through the second flue 35 and the second fan 36. The flue gas from the fifth annular cooling section 15 is sent to the bottom air box of the fourth annular cooling section 14 through the third flue 37 and the third fan 38, thus achieving flue gas recycling. The inner insulation layer and pipe insulation cotton of each section reduce heat loss, and the sealing structure ensures that the flue gas does not leak out. Through multiple waste heat recovery and circulation, the energy utilization rate is improved and zero emissions are achieved. At the same time, the filter component 4 can be quickly disassembled and maintained to ensure stable operation of the system.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0020] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
Claims
1. A waste heat recovery device for a sintering ring cooler, characterized in that, The device includes a ring cooler body (1), a ring cooler fan (2), a heat exchange assembly (3), and a filter assembly (4). The ring cooler body (1) is divided into a ring cooler section 1 (11), a ring cooler section 2 (12), a ring cooler section 3 (13), a ring cooler section 4 (14), and a ring cooler section 5 (15) from left to right. The ring cooler fan (2) is provided in three sets and is fixed at the lower ends of the ring cooler section 2 (12), the ring cooler section 3 (13), and the ring cooler section 5 (15). The heat exchange assembly (3) is connected to the outside of the ring cooler body (1), and the filter assembly (4) is connected to the heat exchange assembly (3). The heat exchange assembly (3) includes a first flue (31), a waste heat boiler (32), a duct (33), a first fan (34), a second flue (35), a second fan (36), a third flue (37), and a third fan (38). One end of the first flue (31) is connected to the output ends of the first and second sections of the annular cooling system (11) and the second section of the annular cooling system (12), and the other end is connected to the input end of the waste heat boiler (32). The first fan (34) is connected to the waste heat boiler (32) through the duct (33). 32) The output end is connected to the input end of the second section (12) and the third section (13) of the annular cooling. The second flue (35) is connected to the output end of the third section (13). The second fan (36) is connected between the second flue (35) and the first section (11) of the annular cooling through the conduit (33). The third flue (37) is connected to the output end of the fifth section (15) of the annular cooling. The third fan (38) is connected between the third flue (37) and the fourth section (14) of the annular cooling through the conduit (33).
2. The waste heat recovery equipment for a sintering ring cooler according to claim 1, characterized in that: The filter assembly (4) includes a filter box (41), a filter screen (43), a sealing cover (44), and a handle (45). The filter box (41) is connected to the middle section of the first flue (31). The filter box (41) has an installation port (42). The filter screen (43) is inserted into the installation port (42). The sealing cover (44) is fixed on the installation port (42), and a handle (45) is provided on the upper end of the sealing cover (44).
3. The waste heat recovery equipment for a sintering ring cooler according to claim 1, characterized in that: The inner walls of the first ring cooling section (11), the second ring cooling section (12), the third ring cooling section (13), the fourth ring cooling section (14), and the fifth ring cooling section (15) are all provided with a high-temperature resistant heat insulation layer, which is made of ceramic fiber material.
4. The waste heat recovery equipment for a sintering ring cooler according to claim 1, characterized in that: The outer walls of the first flue (31), the second flue (35), the third flue (37) and the conduit (33) are all wrapped with thermal insulation cotton, and sealing gaskets are provided at the pipe connections.
5. The waste heat recovery equipment for a sintering ring cooler according to claim 2, characterized in that: The filter assembly (4) also includes a permanent magnet (46), which is fixed on the side of the sealing cover (44) near the mounting port (42). The permanent magnet (46) has a ring structure design and is magnetically attached to the outer wall of the filter box (41).
6. The waste heat recovery equipment for a sintering ring cooler according to claim 2, characterized in that: A sealing gasket structure is attached between the outer periphery of the filter screen (43) and the inner wall of the filter box (41), and an anti-slip rubber sleeve is fitted on the handle (45).