Blast furnace blower power generation system

Abstract

This application discloses a blast furnace blower power generation system, including a blower, a blast furnace, a first venting tower, a power generation unit, and a second venting tower. The blower supplies cold air; the blast furnace is connected to the blower, and at least one first valve is provided between the blast furnace and the blower to regulate the flow rate of the cold air flowing into the blast furnace; the first venting tower is connected to the blower, and at least one second valve is provided between the first venting tower and the blower to regulate the flow rate of the cold air flowing into the first venting tower; the power generation unit is connected to the blower, and at least one third valve is provided between the power generation unit and the blower to regulate the flow rate of the cold air flowing into the power generation unit; the second venting tower is connected to the outlet of the power generation unit, and at least one fourth valve is provided between the second venting tower and the power generation unit to regulate the flow rate of the air flowing into the second venting tower. This solves the technical problem of large energy loss in existing blast furnace systems.

Description

Technical Field

[0001] This application belongs to the field of blast furnace metallurgical technology, specifically relating to a blast furnace blower power generation system. Background Technology

[0002] To meet the demand for large air volumes, traditional steel plants typically use large blast furnace blowers. As oxygen enrichment in blast furnaces increases, the demand for cold air decreases, necessitating venting to balance the operating conditions of the blast furnace blowers. However, existing blast furnace systems equipped with venting functions suffer from problems such as significant energy loss and fluctuations in valves on the venting pipeline. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a blast furnace blower power generation system. This power generation system can utilize the energy directly emitted from the cold air to generate electricity, thereby improving the overall energy utilization rate and avoiding energy waste. Furthermore, it can also improve the valve fluctuation problem of the venting tower, enhancing the overall stability of operation.

[0004] The technical solution adopted to achieve the purpose of this application is as follows:

[0005] The blast furnace blower power generation system of this application includes a blower, a blast furnace, a first venting tower, a power generation unit, and a second venting tower. The blower supplies cold air; the blast furnace is connected to the blower, and at least one first valve is provided between the blast furnace and the blower for regulating the flow rate of the cold air flowing into the blast furnace; the first venting tower is connected to the blower, and at least one second valve is provided between the first venting tower and the blower for regulating the flow rate of the cold air flowing into the first venting tower.

[0006] The power generation device is connected to the blower, and at least one third valve is provided between the power generation device and the blower for regulating the air volume of the cold air flowing into the power generation device; the second venting tower is connected to the outlet of the power generation device, and at least one fourth valve is provided between the second venting tower and the power generation device for regulating the air volume flowing into the second venting tower.

[0007] In some technical solutions, multiple third valves are provided, and the multiple third valves include a first regulating valve and a quick-cut valve, with the quick-cut valve located between the first regulating valve and the power generation device.

[0008] In some technical solutions, a venting bypass is included, wherein the venting bypass is provided with a venting valve, one end of the venting bypass is connected to the pipeline between the first regulating valve and the quick-cut valve, and the other end of the venting bypass is connected to at least one of the first venting tower and the second venting tower.

[0009] In some technical solutions, a venting bypass and a third venting tower are included. The venting bypass is equipped with a venting valve. One end of the venting bypass is connected to the pipeline between the first regulating valve and the quick-cut valve, and the other end of the venting bypass is connected to the third venting tower.

[0010] In some technical solutions, the plurality of third valves include a first shut-off valve, which is located between the first regulating valve and the quick-cut valve, and at least one fourth valve includes a second shut-off valve.

[0011] In some technical solutions, an adjustment mechanism is included, which is located at the inlet of the power generation device and is used to adjust the air volume of the cold air from the power generation device.

[0012] In some technical solutions, the regulating mechanism includes a second regulating valve, which is located upstream of the inlet of the power generation device and downstream of the at least one third valve.

[0013] In some technical solutions, the regulating mechanism includes guide vanes, which are located at the inlet of the power generation device and can swing to regulate the airflow of the cold air flowing into the power generation device.

[0014] In some technical solutions, a filter is included, which is located upstream of the blower and is used to filter the gas entering the blower.

[0015] In some technical solutions, the at least one first valve includes a backflow valve;

[0016] And / or, the at least one second valve includes an anti-surge valve.

[0017] As can be seen from the above technical solution, the power generation system of this application can realize the power generation utilization of the energy directly emitted by the cold air, improve the overall energy utilization rate, avoid energy waste, and also improve the valve fluctuation problem of the venting tower, thereby improving the overall stability of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the blast furnace blower power generation system in the embodiments of this application.

[0019] Figure 2 This is a schematic diagram of the overall structure of the blast furnace blower power generation system in another embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the overall structure of the blast furnace blower power generation system in another embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the overall structure of the blast furnace blower power generation system in another embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the overall structure of the blast furnace blower power generation system in another embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Blower; 2-Blast furnace; 21-First valve; 211-Reverse air valve; 22-First pipeline; 3-First venting tower; 31-Second valve; 311-Anti-surge valve; 32-Second pipeline; 4-Power generation unit; 41-Third valve; 411-First regulating valve; 412-Quick-cut valve; 413-First shut-off valve; 42-Third pipeline; 5-Second venting tower; 51-Fourth valve; 511-Second shut-off valve; 52-Fourth pipeline; 6-Venting bypass; 61-Venting valve; 7-Third venting tower; 8-Regulating mechanism; 81-Second regulating valve; 82-Guide vane; 9-Filter. Detailed Implementation

[0025] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 As shown, the blast furnace blower power generation system of this application includes a blower 1, a blast furnace 2, a first venting tower 3, a power generation device 4, and a second venting tower 5.

[0027] Blower 1 is used to supply cold air. Specifically, blower 1 can be a blower 1 for blast furnace. When blower 1 is running, blower 1 can supply compressed air (cold air as it is known in the industry) into blast furnace 2, thereby meeting the needs of oxygen supply and other uses in blast furnace 2.

[0028] The blast furnace 2 is connected to the blower 1, and at least one first valve 21 is provided between the blast furnace 2 and the blower 1 to regulate the flow rate of cold air into the blast furnace 2. For example, as Figure 1 As shown, blast furnace 2 can be located to the right front of blower 1. Specifically, blast furnace 2 can be connected to the outlet of blower 1 via a first pipe 22. A first valve 21 can be provided on the first pipe 22. In some other embodiments, two or three equal numbers of first valves 21 can be provided on the first pipe 22. The first valve 21 can control the opening and closing of the first pipe 22, thereby enabling the regulation and control of the airflow of cold air supplied to blast furnace 2.

[0029] The first valve 21 can specifically be a backflow valve 211. The backflow valve 211 can prevent the cold air flowing into the blast furnace 2 from flowing back, thereby limiting the flow direction of the cold air and ensuring the stability of the cold air delivery.

[0030] It should be noted that the various orientations in this application can correspond to the actual installation and layout of the entire system. During installation, the entire system can be laid out horizontally on the corresponding site, such as... Figure 1 As shown, the front and back directions can be any direction in the horizontal plane, with the left side from back to front as left and the right side from back to front as right.

[0031] The first venting tower 3 is connected to the blower 1, and at least one second valve 31 is provided between the first venting tower 3 and the blower 1 to regulate the airflow of cold air into the first venting tower 3. For example, Figure 1 As shown, the first venting tower 3 may be located to the right front of the blower 1, and the first venting tower 3 may be located to the right of the blower 1.

[0032] The first venting tower 3 can be connected to the blower 1 via the second pipeline 32. A second valve 31 can be provided on the second pipeline 32; in other embodiments, two, three, or equal numbers of second valves 31 can also be provided on the second pipeline 32. The second valve 31 can control the opening and closing of the second pipeline 32, thereby regulating the airflow of the cold air supplied to the first venting tower 3. Specifically, the second valve 31 can be an anti-surge valve 311, whose core function is to prevent surge by regulating the gas flow rate.

[0033] The power generation unit 4 is connected to the blower 1, and at least one third valve 41 is provided between the power generation unit 4 and the blower 1 to regulate the airflow of cold air into the power generation unit 4. For example, Figure 1 As shown, the power generation device 4 can be an expansion power generation device. The power generation device 4 can be located to the right rear of the blower 1. The inlet of the power generation device 4 can be connected to the outlet of the blower 1 through the third pipe 42.

[0034] Multiple third valves 41 may be provided on the third pipeline 42. The third valve 41 may be a regulating valve or other types of valve. In some other embodiments, there may be only one third valve 41. The third valve 41 can realize the opening and closing control of the third pipeline 42, thereby realizing the regulation and control of the air volume of the cold air delivered to the power generation device 4.

[0035] The second venting tower 5 is connected to the outlet of the power generation unit 4, and at least one fourth valve 51 for regulating the airflow into the second venting tower 5 is provided between the second venting tower 5 and the power generation unit 4. For example, Figure 1As shown, the second venting tower 5 can be located to the right front of the power generation device 4. The second venting tower 5 can be connected to the outlet of the power generation device 4 through a fourth pipe 52. A fourth valve 51 can be provided on the fourth pipe 52. In some other embodiments, two or three equal numbers of fourth valves 51 can also be provided on the fourth pipe 52. The fourth valve 51 can realize the opening and closing control of the fourth pipe 52, thereby realizing the regulation of the airflow volume from the power generation device 4.

[0036] It should be noted that the inlet ends of the first pipe 22, the second pipe 32, and the third pipe 42 can converge at a single node to form a tee pipe, which can be connected to the outlet pipe of the blower 1. This simplifies the overall structural layout.

[0037] In some embodiments, a plurality of third valves 41 are provided, and the plurality of third valves 41 include a first regulating valve 411 and a quick-cut valve 412, wherein the quick-cut valve 412 is disposed between the first regulating valve 411 and the power generation device 4.

[0038] For example, such as Figure 1 As shown, there may be only two third valves 41. The two third valves 41 may be arranged at intervals along the extension direction of the third pipeline 42. The two third valves 41 may be the first regulating valve 411 and the quick-cut valve 412, respectively. The first regulating valve 411 may be located upstream of the quick-cut valve 412.

[0039] In use, the first regulating valve 411 can regulate the air volume delivered to the generator 4 via the third pipeline 42, meeting the needs of real-time adjustment. The quick-cut valve 412 can quickly cut off the flow of the medium in the pipeline in case of abnormal operation, thereby preventing the accident from escalating or ensuring the safety of personnel and equipment, and improving the overall protection effect.

[0040] In some embodiments, the blast furnace blower power generation system includes a venting bypass 6, which is provided with a venting valve. One end of the venting bypass 6 is connected to the pipeline between the first regulating valve 411 and the quick-cut valve 412, and the other end of the venting bypass 6 is connected to at least one of the first venting tower 3 and the second venting tower 5.

[0041] For example, such as Figure 2 As shown, one end of the venting bypass 6 can be connected to the third pipeline 42, and the connection node between the venting bypass 6 and the third pipeline 42 can be located between the first regulating valve 411 and the quick-cut valve 412. The other end of the venting bypass 6 can be connected to the first venting tower 3. Specifically, the venting bypass 6 can be connected to the second pipeline 32, that is, the venting bypass 6 and the second pipeline 32 can have a common section, which can simultaneously supply cold air flowing into the first venting tower 3 via the second pipeline 32 and the venting bypass 6.

[0042] During use, on the one hand, the air volume of the cold air flowing into the power generation device 4 can be adjusted by the first regulating valve 411, and on the other hand, the venting bypass 6 can be connected between the first venting tower 3 and the third pipeline 42 by opening the venting valve, so that a part of the cold air flowing into the third pipeline 42 can also flow into the first venting tower 3 through the venting bypass 6, thereby also playing the role of adjusting the air volume of the cold air flowing into the power generation device 4.

[0043] Secondly, when the second valve 31 malfunctions or the second pipeline 32 is blocked, cold air can also be supplied to the first venting tower 3 via the venting bypass 6, so that the venting bypass 6 also has the function of supplying cold air to the first venting tower 3 for backup.

[0044] In some other embodiments, such as Figure 3 As shown, the venting bypass 6 can also be connected between the third pipeline 42 and the second venting tower 5. In this case, one end of the venting bypass 6 can be connected to the third pipeline 42 between the first regulating valve 411 and the quick-cut valve 412, and the other end of the venting bypass 6 can be directly connected to the second venting tower 5. This allows cold air to be delivered to the second venting tower 5 via the venting bypass 6.

[0045] In some other embodiments, one end of the venting bypass 6 may be connected to the third pipeline 42, and the other end of the venting bypass 6 may be connected to both the first venting tower 3 and the second venting tower 5.

[0046] In some embodiments, the blast furnace blower power generation system includes a venting bypass 6 and a third venting tower 7. The venting bypass 6 is equipped with a venting valve. One end of the venting bypass 6 is connected to the pipeline between the first regulating valve 411 and the quick-cut valve 412, and the other end of the venting bypass 6 is connected to the third venting tower 7.

[0047] For example, such as Figure 4 As shown, the venting bypass 6 can generally extend in the front-to-back direction. The front end of the venting bypass 6 can be connected to the third pipeline 42 between the first regulating valve 411 and the quick-cut valve 412, and the rear end of the venting bypass 6 can be connected to the third venting tower 7. In use, a portion of the cold air transported through the third pipeline 42 can be directly transported to the third venting tower 7 through the venting bypass 6, thereby also serving the purpose of diverting cold air.

[0048] In some embodiments, the plurality of third valves 41 include a first shut-off valve 413 disposed between the first regulating valve 411 and the quick-cut valve 412, and at least one fourth valve 51 includes a second shut-off valve 511.

[0049] For example, such as Figure 5As shown, there may be only one first shut-off valve 413, and this first shut-off valve 413 may be located between the first regulating valve 411 and the quick-cut valve 412. There may be only one fourth valve 51, which is the second shut-off valve 511. The shut-off valve has relatively low frictional resistance during operation and is stable and reliable in opening and closing, thus meeting the needs of throttling and controlling the flow of the medium.

[0050] In some embodiments, such as Figure 5 As shown, the blast furnace blower power generation system includes a regulating mechanism 8, which is located at the inlet of the power generation unit 4 and is used to regulate the airflow of the cold air from the power generation unit 4. In operation, the airflow of the cold air flowing to the power generation unit 4 can also be adjusted via the regulating mechanism 8. The aforementioned third valves 41 primarily function as openers and closers, thus separating the opening / closing control from the airflow control, ensuring the stability of all overall operations.

[0051] In some embodiments, the regulating mechanism 8 includes a second regulating valve 81, which is located upstream of the inlet of the power generation device 4 and downstream of at least one third valve 41. For example, as Figure 5 As shown, the second regulating valve 81 can be located downstream of the aforementioned quick-cut valve 412. In use, the flow rate of the medium can be adjusted by regulating the opening degree of the second regulating valve 81.

[0052] In some embodiments, the regulating mechanism 8 includes a guide vane 82 disposed at the inlet of the power generation device 4, and the guide vane 82 is oscillating to regulate the airflow of cold air into the power generation device 4. For example, as Figure 5 As shown, the guide vane 82 may include multiple louvers, which can be arranged in parallel at intervals, and the multiple louvers can be driven to oscillate by a drive motor. The structure of the guide vane 82 is similar to the form of louvers on air conditioners, fans, etc. in the prior art, and will not be described in detail here.

[0053] In use, the opening degree of the inlet of the power generation device 4 can be adjusted by swinging each louver, thereby meeting the need to regulate the air volume of the cold air flowing into the power generation device 4.

[0054] In some embodiments, the blast furnace blower power generation system includes a filter 9, which is located upstream of the blower 1 and is used to filter the gas entering the blower 1. For example, as Figure 5 As shown, the filter 9 can be installed at the inlet of the blower 1. The filter 9 can filter the gas, thereby preventing impurities such as injected particulate matter from flowing into the blower 1, avoiding damage to the blower 1 by impurities, and ensuring the stability of the blower 1 in use.

[0055] In some embodiments, the first regulating valve 411 and the second regulating valve 81 described above may have a pneumatic or hydraulic position feedback function. Specifically, this feedback function can be implemented by monitoring components such as pressure gauges and flow meters.

[0056] In use, the monitoring component can monitor the airflow parameters such as pressure and flow rate of the airflow flowing into the third pipe 42 in real time. By monitoring the airflow parameters, the opening degree of the first regulating valve 411, the venting valve, etc. can be adjusted, so that the airflow of the cold air flowing through the anti-surge valve 311 can be kept roughly consistent, which improves the situation that the second valve 31, such as the anti-surge valve 311, is prone to fluctuation and improves the overall stability of use.

[0057] Through the above embodiments, this application has the following beneficial effects or advantages:

[0058] 1) The blast furnace blower power generation system of this application is equipped with a power generation device, which allows the energy that was originally directly discharged from the cold air to be fed into the power generation device for power generation, thereby avoiding energy waste and improving the overall energy utilization rate.

[0059] 2) In the blast furnace blower power generation system of this application, the air volume of the cold air flowing through the third pipeline can be controlled by adjusting the first regulating valve, etc., thereby realizing the diversion and regulation of the air volume of the cold air flowing through the second pipeline. This can improve the large fluctuation problem of the second valve such as the anti-surge valve and ensure the stability of the airflow in individual pipelines used for diverting cold air.

[0060] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0061] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A power generation system for a blast furnace blower, characterized in that, include: Blower, the blower being used to supply cold air; A blast furnace, the blast furnace being connected to the blower, and at least one first valve being provided between the blast furnace and the blower for regulating the flow rate of the cold air flowing into the blast furnace; A first venting tower is connected to the blower, and at least one second valve is provided between the first venting tower and the blower for adjusting the airflow of the cold air flowing into the first venting tower. A power generation device, the power generation device being connected to the blower, and at least one third valve being provided between the power generation device and the blower for regulating the airflow of the cold air flowing into the power generation device; A second venting tower is connected to the outlet of the power generation device, and at least one fourth valve is provided between the second venting tower and the power generation device for regulating the amount of air flowing into the second venting tower.

2. The blast furnace blower power generation system according to claim 1, characterized in that, The third valve is provided in multiple ways, and the multiple third valves include a first regulating valve and a quick-cut valve, wherein the quick-cut valve is located between the first regulating valve and the power generation device.

3. The blast furnace blower power generation system according to claim 2, characterized in that, It includes a venting bypass, which is equipped with a venting valve. One end of the venting bypass is connected to the pipeline between the first regulating valve and the quick-cut valve, and the other end of the venting bypass is connected to at least one of the first venting tower and the second venting tower.

4. The blast furnace blower power generation system according to claim 2, characterized in that, It includes a venting bypass and a third venting tower. The venting bypass is equipped with a venting valve. One end of the venting bypass is connected to the pipeline between the first regulating valve and the quick-cut valve, and the other end of the venting bypass is connected to the third venting tower.

5. The blast furnace blower power generation system according to claim 2, characterized in that, The plurality of third valves include a first shut-off valve disposed between the first regulating valve and the quick-cut valve, and at least one fourth valve includes a second shut-off valve.

6. The blast furnace blower power generation system according to claim 1, characterized in that, It includes an adjustment mechanism located at the inlet of the power generation device, and the adjustment mechanism is used to adjust the air volume of the cold air from the power generation device.

7. The blast furnace blower power generation system according to claim 6, characterized in that, The regulating mechanism includes a second regulating valve, which is located upstream of the inlet of the power generation device and downstream of the at least one third valve.

8. The blast furnace blower power generation system according to claim 6, characterized in that, The regulating mechanism includes guide vanes located at the inlet of the power generation device, and the guide vanes are oscillating to regulate the airflow of the cold air flowing into the power generation device.

9. The blast furnace blower power generation system according to claim 1, characterized in that, The system includes a filter located upstream of the blower, and the filter is used to filter the gas entering the blower.

10. The blast furnace blower power generation system according to any one of claims 1-9, characterized in that, The at least one first valve includes a backflow valve; And / or, the at least one second valve includes an anti-surge valve.

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