Sintering circular cooler and control method
By optimizing the setting and connection method of the blower in the sintering ring cooler, and using the waste gas recycling between multiple cooling zones, the problems of unused waste gas in the low-temperature cooling zone and high energy consumption of the blower are solved, and the waste gas utilization rate and cooling are improved quality.
Patent Information
- Application Number
- CN202411567029.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2024-12-27
AI Technical Summary
In the existing sintering ring coolers, the exhaust gas in the low-temperature cooling zone is difficult to effectively utilize, and the rated air volume of the blower is too large, resulting in high energy consumption and quench cooling, affecting the quality of the sintered ore, and the air flow problem between adjacent cooling zones is serious.
A sintered ring cooler is designed, including an annular frame and multiple blowers. Each cooling area is equipped with a blower of 100,000-200,000 m3/h, and the inlet connection of the blower is optimized through adjustable partitions and control valves. In this way, the exhaust gas from the third cooling zone is introduced into the second cooling zone through a blower, and then the waste heat power generation equipment is introduced into the chimney for utilization.
It improves the utilization rate of exhaust gas in the cooling area, reduces the energy consumption of the blower, ensures the cooling quality of the sintered ore, and reduces the wind flow between adjacent cooling areas.
Smart Images
Figure CN119197121A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of ring coolers, and in particular, to a sintering ring cooler and a control method thereof. Background Art
[0002] Sintering ring cooler is a kind of equipment used to cool the hot sintered ore discharged from the sintering machine, usually including 4 cooling zones distributed in sequence from the feed port to the discharge port.
[0003] On the one hand, the first and second cooling zones are high-temperature cooling zones, and the exhaust gas temperature is relatively high, which is generally recycled in the form of waste heat power generation. The third and fourth cooling zones are low-temperature cooling zones, and the exhaust gas temperature is relatively low, which is generally directly discharged into the atmosphere and difficult to be effectively utilized. On the other hand, the four cooling zones are equipped with five blowers, and the rated air volume of the blowers is 400,000-500,000 m 3 / h, not only does it consume a lot of energy, but the air volume at the blower outlet is too large, which can easily cause rapid cooling of the sintered ore and affect the quality of the sintered ore; on the other hand, partitions are set between adjacent cooling zones, but the partitions are far away from the materials, which can easily cause cross-wind between adjacent cooling zones. When the exhaust gas in the low-temperature cooling zone enters the high-temperature cooling zone, it will affect the effect of waste heat power generation. Summary of the invention
[0004] The embodiments of the present application provide a sintering ring cooler and a control method, which can improve the utilization rate of waste gas.
[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.
[0006] According to a first aspect of an embodiment of the present application, a sintering ring cooler is provided, comprising an annular frame and a blower, wherein the frame is divided into a feeding zone, first to fourth cooling zones and a unloading zone according to the direction of the material, the blower and the cooling zones are arranged correspondingly, the inlet of the blower is connected to the atmosphere, and the outlet is connected to the corresponding cooling zone, each of the cooling zones is provided with a chimney, the chimneys of the first cooling zone and the second cooling zone are connected to waste heat power generation equipment, and the inlet of the blower corresponding to the second cooling zone is also connected to the side of the chimney of the third cooling zone.
[0007] In some embodiments of the present application, based on the above scheme, the first to fourth cooling zones are provided with 10 rated air volumes of 100,000-200,000 m 3 / h of the blower, each cooling zone is correspondingly provided with at least 2 blowers, the inlet of one of the blowers in the second cooling zone is respectively connected to the atmosphere and the side of the chimney of the third cooling zone, and the inlet of at least one other blower is connected to the atmosphere.
[0008] In some embodiments of the present application, based on the aforementioned scheme, 5 of the blowers are arranged in the rack, and another 5 blowers are arranged in the rack, and the blower arranged in the rack is located between two adjacent blowers arranged in the rack.
[0009] In some embodiments of the present application, based on the aforementioned solution, a sealing cover is further included, and the sealing cover is simultaneously arranged above the feeding area, the four cooling areas and the unloading area.
[0010] In some embodiments of the present application, based on the aforementioned scheme, the frame includes a grate plate for placing materials, the sealing cover is provided with four partitions separating the cooling zones, the partition between the second cooling zone and the third cooling zone is an adjustable partition with adjustable height, and the height of the material on the grate plate is greater than the lowest height of the lower end of the adjustable partition and less than the highest height of the lower end of the adjustable partition.
[0011] In some embodiments of the present application, based on the aforementioned solution, the adjustable partition includes a vertically arranged telescopic rod and a first baffle, the upper end of the telescopic rod is connected to the sealing cover, and the lower end is connected to the first baffle.
[0012] According to a second aspect of the present application, a control method for a sintering ring cooler is provided, which is applied to a sintering ring cooler according to any embodiment of the first aspect of the present application, and the method comprises:
[0013] Obtaining a first current unloading material temperature and a preset temperature;
[0014] Determine whether the first current unloading material temperature is lower than the preset temperature. If so, connect the inlet of the blower in the second cooling zone and the chimney side of the third cooling zone. If not, connect the inlet of the blower in the second cooling zone and the atmosphere.
[0015] In some embodiments of the present application, based on the above solution, the sintering ring cooler further includes a sealing cover, and the sealing cover is simultaneously arranged above the feeding zone, the four cooling zones and the unloading zone, and the method further includes:
[0016] Get the current sealing cover temperature;
[0017] The air volume of the first blower is controlled according to a first preset relationship, the current sealing cover temperature and the preset temperature, wherein the first preset relationship is a corresponding relationship between the material temperature in the unloading area and the sealing cover temperature.
[0018] In some embodiments of the present application, based on the above solution, controlling the air volume of the first blower according to the first preset relationship, the current sealing cover temperature and the preset temperature includes:
[0019] Determining the material temperature in the second unloading area according to the first preset relationship and the current sealing cover temperature;
[0020] Determine whether the first current unloading material temperature is lower than a preset temperature, if so, reduce the first blower air volume, if not, increase the first blower air volume.
[0021] In some embodiments of the present application, based on the above solution, the method further includes:
[0022] Get the current blower air volume and current material particle size index;
[0023] The air volume of the second blower is controlled according to the second preset relationship, the current blower air volume and the preset temperature, wherein the second preset relationship is the corresponding relationship between the blower air volume, the material particle size index and the material temperature in the unloading area.
[0024] The beneficial effects of this application are as follows:
[0025] The exhaust gas from the third cooling zone is introduced into the second cooling zone through the blower, and then introduced into the waste heat power generation equipment through the chimney of the second cooling zone for utilization, thereby improving the utilization rate of the exhaust gas from the third cooling zone.
[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:
[0028] Figure 1 A schematic diagram of an existing sintering ring cooler is shown;
[0029] Figure 2 A schematic diagram of a sintering ring cooler in an embodiment of the present application is shown. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0031] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.
[0032] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.
[0033] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.
[0034] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.
[0035] Figure 1 The schematic diagram of the existing sintering ring cooler is shown. Figure 1 1, 3, 5, 7 and 9 are blowers, 2, 4, 6 and 8 are chimneys, see Figure 1 In order to better understand the embodiments of the present application, the sintering ring cooler is described as follows:
[0036] The sintering ring cooler divides the frame into the first cooling zone, the second cooling zone, the third cooling zone and the fourth cooling zone according to the material direction. The first cooling zone and the second cooling zone are high-temperature cooling zones, and the first cooling zone and the second cooling zone are connected to the waste heat boiler. The third cooling zone and the fourth cooling zone are low-temperature cooling zones. The first cooling zone, the third cooling zone and the fourth cooling zone are each equipped with a blower, and the second cooling zone is equipped with two blowers. The first cooling zone, the second cooling zone, the third cooling zone and the fourth cooling zone are each equipped with a chimney, which is used to discharge the exhaust gas from the corresponding cooling zone. The inlet of the blower is connected to the atmosphere, and the outlet is connected to the corresponding cooling zone to send the atmosphere to the corresponding cooling zone to cool the sintered mineral material. On the one hand, the waste heat boiler utilizes the exhaust gas discharged from the first cooling zone and the second cooling zone. The exhaust gas discharged from the third cooling zone and the fourth cooling zone has a lower temperature and is generally discharged directly into the atmosphere, which is difficult to be effectively utilized. On the one hand, the rated air volume of the blower is 400,000-500,000 m 3 / h, not only does it consume more energy, but the air volume at the blower outlet is too large, which can easily cause rapid cooling of the sintered mineral material and affect the quality of the sintered ore. On the other hand, partitions are set between adjacent cooling zones, but the partitions are far away from the materials, which can easily cause cross-wind between adjacent cooling zones. When the exhaust gas in the low-temperature cooling zone enters the high-temperature cooling zone, it will affect the effect of waste heat power generation.
[0037] Figure 2 A schematic diagram of a sintering ring cooler in an embodiment of the present application is shown. Figure 2 , 10, 12, 13, 16, 17, 21, 23, 24, 26 and 28 are blowers, 11, 15, 22 and 27 are chimneys, 14, 20, 25 and 29 are baffles, 18 is a first control valve, 19 is a second control valve, 30 is a rack, wherein the blowers corresponding to the first cooling zone are 10 and 12, the chimney of the first cooling zone is 11, the blowers corresponding to the second cooling zone are 13, 16 and 17, the chimney of the second cooling zone is 15, the blowers corresponding to the third cooling zone are 21 and 23, the chimney of the third cooling zone is 22, the blowers corresponding to the fourth cooling zone are 26 and 28, the chimney of the fourth cooling zone is 27, 10, 13, 17, 23 and 26 are external blowers, 12, 16, 21, 24 and 28 are internal blowers, 17 is the target blower, see Figure 2, provides a sintering ring cooler, including a ring-shaped frame 30 and a blower. The frame 30 is divided into a feeding area, the first to fourth cooling areas and a unloading area according to the direction of the material. The blower is arranged correspondingly to the cooling areas. The inlet of the blower is connected to the atmosphere, and the outlet is connected to the corresponding cooling area. Each cooling area is provided with a chimney. The chimneys of the first cooling area and the second cooling area are connected to the waste heat power generation equipment, and the inlet of the blower corresponding to the second cooling area is also connected to the side of the chimney of the third cooling area. The material enters the rack 30 from the feeding area, is transported in the rack 30, passes through the first cooling area, the second cooling area, the third cooling area and the fourth cooling area in sequence, and the blower sends the atmosphere to the corresponding cooling area to cool the material, and then discharges the rack 30 from the unloading area, wherein when cooling is required, the inlet of the blower corresponding to the second cooling area can be connected to the atmosphere, and when cooling is not required, it can be connected to the side of the chimney of the third cooling area, and part of the exhaust gas discharged from the chimney of the third cooling area is introduced into the second cooling area, and discharged to the waste heat power generation equipment through the chimney of the second cooling area for utilization, thereby improving the utilization rate of the exhaust gas discharged from the chimney of the third cooling area. The material is sintered mineral material, and the waste heat power generation equipment is a waste heat boiler.
[0038] In some embodiments, the first to fourth cooling zones are provided with 10 rated air volumes of 100,000-200,000 m 3 / h of the blower, each cooling zone is provided with at least two blowers, the inlet of one of the blowers in the second cooling zone is connected to the atmosphere and the side of the chimney of the third cooling zone, and the inlet of at least one other blower is connected to the atmosphere. The rated air volume of the blower is 100,000-200,000 m 3 / h, the number is 10. Compared with the blower of the existing ring cooler, the rated air volume is smaller, which reduces the energy consumption of the blower. In order to ensure the cooling quality, the number of blowers is increased, thereby reducing energy consumption while ensuring the cooling quality.
[0039] In some embodiments, the first, third and fourth cooling zones are provided with two of the blowers, and the second cooling zone is provided with three of the blowers.
[0040] In some embodiments, an inlet of a blower of the second cooling zone that is closest to the third cooling zone is connected to the atmosphere and a side of a chimney of the third cooling zone, respectively.
[0041] In some embodiments, when the inlet of one of the blowers in the second cooling zone is connected to the atmosphere and the chimney side of the third cooling zone respectively, the blower whose corresponding inlet of the second cooling zone is connected to the atmosphere and the chimney side of the third cooling zone respectively is defined as a target blower, a first control valve is provided on the connecting pipe between the inlet of the target blower and the atmosphere, and a second control valve is provided on the connecting pipe between the inlet of the target blower and the chimney side of the third cooling zone. By controlling the first control valve and the second control valve, it is determined whether the inlet of the target blower is connected to the atmosphere or the chimney side of the third cooling zone.
[0042] In some embodiments, the first control valve and the second control valve are controlled to determine whether the inlet of the target blower is connected to the atmosphere or to the side of the chimney of the third cooling zone, including: opening the first control valve and closing the second control valve, then the inlet of the target blower is connected to the atmosphere; opening the second control valve and closing the first control valve, then the inlet of the target blower is connected to the side of the chimney of the third cooling zone.
[0043] In some embodiments, five of the blowers are arranged in the rack 30, and the other five blowers are arranged in the rack 30, and the blowers arranged in the rack 30 are located between two adjacent blowers arranged in the rack 30. The blowers located in the rack 30 are defined as inner blowers, and the blowers located outside the rack 30 are defined as outer blowers. The inner blowers and the outer blowers are arranged alternately to facilitate the installation of the blowers. Due to the limited space inside or outside the rack 30, if all or most of the blowers are installed in one of the places inside and outside the rack 30, it is not conducive to the installation of the blowers.
[0044] In some embodiments, a sealing cover is further included, wherein the sealing cover is simultaneously disposed above the feeding zone, the four cooling zones and the unloading zone.
[0045] In some embodiments, at least one temperature detection element is provided in the sealing cover corresponding to each cooling zone. The temperature detection element may be a temperature sensor.
[0046] In some embodiments, the frame 30 includes a grate plate for placing materials, the sealing cover is provided with four partitions for separating the cooling zones, the partition between the second cooling zone and the third cooling zone is an adjustable partition with adjustable height, and the height of the material on the grate plate is greater than the lowest height of the lower end of the adjustable partition and less than the highest height of the lower end of the adjustable partition. When the material passes under the adjustable partition, the upper end of the material contacts the lower end of the adjustable partition, thereby separating the second cooling zone and the third cooling zone, and preventing the exhaust gas of the third cooling zone from entering the second cooling zone, causing cross-gas.
[0047] In some embodiments, the adjustable partition includes a vertically arranged telescopic rod and a first baffle, wherein the upper end of the telescopic rod is connected to the sealing cover, and the lower end of the telescopic rod is connected to the first baffle.
[0048] In some embodiments, the telescopic rod and the first baffle are rotatably connected, that is, the first baffle can rotate around the telescopic rod.
[0049] In some embodiments, the adjustable partition includes a second baffle and a driving mechanism for driving the second baffle to rise and fall. The driving mechanism may be an electric push rod or a cylinder.
[0050] According to the second aspect of the present application, a control method for a sintering ring cooler is provided, which is applied to a sintering ring cooler described in any embodiment of the first aspect of the present application, and the method includes: obtaining a first current unloading material temperature and a preset temperature; judging whether the first current unloading material temperature is lower than the preset temperature, and if so, connecting the inlet of the blower of the second cooling zone and the side of the chimney of the third cooling zone; if not, connecting the inlet of the blower of the second cooling zone and the atmosphere.
[0051] In some embodiments, the sintering ring cooler also includes a sealing cover, which is simultaneously arranged above the feeding zone, four cooling zones and the unloading zone. The method also includes: obtaining the current sealing cover temperature; controlling the air volume of the first blower according to a first preset relationship, the current sealing cover temperature and the preset temperature, wherein the first preset relationship is the corresponding relationship between the material temperature in the unloading zone and the sealing cover temperature.
[0052] In some embodiments, the air volume of the first blower is controlled according to the first preset relationship, the current sealing cover temperature and the preset temperature, including: determining the material temperature of the second unloading area according to the first preset relationship and the current sealing cover temperature; judging whether the first current unloading material temperature is lower than the preset temperature, if so, reducing the air volume of the first blower, if not, increasing the air volume of the first blower.
[0053] In some embodiments, the method also includes: obtaining the current blower air volume and the current material particle size index; controlling the second blower air volume according to a second preset relationship, the current blower air volume and the preset temperature, wherein the second preset relationship is the corresponding relationship between the blower air volume, the material particle size index and the material temperature in the unloading area.
[0054] In the present application, the exhaust gas from the third cooling zone is introduced into the second cooling zone through the blower, and then introduced into the waste heat power generation equipment through the chimney of the second cooling zone for utilization, thereby improving the utilization rate of the exhaust gas from the third cooling zone.
[0055] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these. In addition, each functional unit may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit.
[0056] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.
[0057] The units described as separate components may or may not be physically separated, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed in multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.
[0058] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read~Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc., which can store program code.
[0059] The above description is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims
1. A sintering ring cooler, characterized in that: It includes an annular frame and at least four blowers. The frame is divided into a feeding area, the first to fourth cooling areas and a unloading area according to the direction of the materials. The blowers are arranged correspondingly to the cooling areas. The inlet of the blower is connected to the atmosphere, and the outlet is connected to the corresponding cooling area. Each cooling area is provided with a chimney. The chimneys of the first cooling area and the second cooling area are connected to the waste heat power generation equipment, and the inlet of the blower corresponding to the second cooling area is also connected to the side of the chimney of the third cooling area.
2. A sintering ring cooler according to claim 1, characterized in that: The first to fourth cooling zones are provided with 10 rated air volumes of 100,000-200,000 m 3 / h of the blower, each cooling zone is correspondingly provided with at least 2 blowers, the inlet of one of the blowers in the second cooling zone is respectively connected to the atmosphere and the side of the chimney of the third cooling zone, and the inlet of at least one other blower is connected to the atmosphere.
3. A sintering ring cooler according to claim 2, characterized in that: Five of the blowers are arranged in the frame, and another five of the blowers are arranged in the frame. The blowers arranged in the frame are located between two adjacent blowers arranged in the frame.
4. A sintering ring cooler according to claim 1, characterized in that: The utility model also comprises a sealing cover, which is simultaneously arranged above the feeding zone, the four cooling zones and the unloading zone.
5. The sintering ring cooler according to claim 1, characterized in that: The frame includes a grate plate for placing materials, the sealing cover is provided with four partitions separating the cooling zones, the partition between the second cooling zone and the third cooling zone is an adjustable partition with adjustable height, and the height of the material on the grate plate is greater than the lowest height of the lower end of the adjustable partition and less than the highest height of the lower end of the adjustable partition.
6. A sintering ring cooler according to claim 5, characterized in that: The adjustable partition includes a vertically arranged telescopic rod and a first baffle, wherein the upper end of the telescopic rod is connected to the sealing cover, and the lower end of the telescopic rod is connected to the first baffle.
7. A control method for a sintering ring cooler, characterized in that: A sintering ring cooler applied to any one of claims 1 to 6, the method comprising: Obtaining a first current unloading material temperature and a preset temperature; Determine whether the first current unloading material temperature is lower than the preset temperature. If so, connect the inlet of the blower in the second cooling zone and the chimney side of the third cooling zone. If not, connect the inlet of the blower in the second cooling zone and the atmosphere.
8. The control method of a sintering ring cooler according to claim 7, characterized in that: The sintering ring cooler also includes a sealing cover, which is simultaneously arranged above the feeding zone, the four cooling zones and the unloading zone. The method also includes: Get the current sealing cover temperature; The air volume of the first blower is controlled according to a first preset relationship, the current sealing cover temperature and the preset temperature, wherein the first preset relationship is a corresponding relationship between the material temperature in the unloading area and the sealing cover temperature.
9. The control method of a sintering ring cooler according to claim 8, characterized in that: The controlling the air volume of the first blower according to the first preset relationship, the current sealing cover temperature and the preset temperature includes: Determining the material temperature in the second unloading area according to the first preset relationship and the current sealing cover temperature; Determine whether the first current unloading material temperature is lower than a preset temperature, if so, reduce the first blower air volume, if not, increase the first blower air volume.
10. The control method of a sintering ring cooler according to claim 7, characterized in that: The method further comprises: Get the current blower air volume and current material particle size index; The air volume of the second blower is controlled according to the second preset relationship, the current blower air volume and the preset temperature, wherein the second preset relationship is the corresponding relationship between the blower air volume, the material particle size index and the material temperature in the unloading area.