System and method for improving gas supply stability of sintering desulfurization and denitrification equipment

Abstract

The invention discloses a system and a method for improving gas supply stability of sintering desulfurization and denitrification equipment. The method comprises the following steps: monitoring gas flow of a first gas supply pipeline and a second gas supply pipeline in real time; when the gas flow of the first gas supply pipeline and the gas flow of the second gas supply pipeline are both higher than or equal to a preset threshold value, the first control valve and the second control valve are opened, and the first gas supply pipeline and the second gas supply pipeline supply gas at the same time; when the gas flow of the first gas supply pipeline is smaller than a preset threshold value, the first control valve of the first gas supply pipeline is closed, and the second gas supply pipeline supplies gas independently; when the gas flow of the second gas supply pipeline is smaller than a preset threshold value, a second control valve of the second gas supply pipeline is closed, and gas is supplied independently by the first gas supply pipeline, so that the gas flow of the sintering desulfurization and denitrification equipment is ensured to be stable, the gas pressure is further maintained to be stable, and the problems of flameout and shutdown of the sintering desulfurization and denitrification equipment caused by insufficient pressure are effectively prevented; and continuous and reliable operation of sintering desulfurization and denitrification equipment is ensured.

Description

Technical Field

[0001] This invention relates to the field of iron and steel metallurgy technology, and in particular to a system and method for improving the gas supply stability of sintering desulfurization and denitrification equipment. Background Technology

[0002] In iron and steel metallurgical enterprises, sintering desulfurization and denitrification equipment is a critical environmental protection device, and its normal operation depends on a stable gas supply. Current technology typically employs a single-path gas supply, directly delivering the clean gas from the corresponding blast furnace to the sintering desulfurization and denitrification equipment via a single blast furnace clean gas main. However, when the blast furnace experiences unstable conditions, a decrease in gas production, or a shutdown, the gas pressure can plummet, potentially causing the sintering desulfurization and denitrification equipment to shut down or cease operation. Summary of the Invention

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a system and method for improving the gas supply stability of sintering desulfurization and denitrification equipment, aiming to solve the problem of shutdown and stoppage of sintering desulfurization and denitrification equipment caused by gas pressure fluctuations.

[0004] The technical solution adopted by this invention to solve its technical problem is: a system for improving the gas supply stability of sintering desulfurization and denitrification equipment, comprising: a first gas supply pipeline connected between the first blast furnace clean gas main and the sintering desulfurization and denitrification equipment; a second gas supply pipeline connected between the second blast furnace clean gas main and the sintering desulfurization and denitrification equipment; a first control valve disposed on the first gas supply pipeline; a second control valve disposed on the second gas supply pipeline; and a control unit used to compare the gas flow rates of the first and second gas supply pipelines with preset thresholds, and control the opening and closing of the first and second control valves according to the comparison results.

[0005] As a further improvement of the present invention: the first blast furnace clean gas main is connected to the first blast furnace, and the second blast furnace clean gas main is connected to the second blast furnace.

[0006] As a further improvement of the present invention: the control of the opening and closing of the first control valve and the second control valve according to the comparison result specifically includes: when the gas flow rate of the first gas supply pipeline is less than a preset threshold, the control unit controls the first control valve to close; when the gas flow rate of the second gas supply pipeline is less than the preset threshold, the control unit controls the second control valve to close; ensuring that the sintering desulfurization and denitrification equipment always has a stable gas source input, preventing the sintering desulfurization and denitrification equipment from experiencing unstable gas pressure and shutdown due to insufficient gas flow rate in a single gas supply pipeline.

[0007] As a further improvement of the present invention: the control of the opening and closing of the first control valve and the second control valve according to the comparison result specifically includes: when the gas flow rate of the first gas supply pipeline and the gas flow rate of the second gas supply pipeline are both higher than or equal to a preset threshold, the first control valve and the second control valve are opened, and gas is supplied by the first gas supply pipeline and the second gas supply pipeline simultaneously; when the gas flow rate of the first gas supply pipeline is less than the preset threshold, the control unit controls the first control valve to close, and gas is supplied by the second gas supply pipeline alone; when the gas flow rate of the second gas supply pipeline is less than the preset threshold, the control unit controls the second control valve to close, and gas is supplied by the first gas supply pipeline alone; this avoids the failure of the gas supply pipeline from affecting the overall gas supply, ensures that the sintering desulfurization and denitrification equipment always has a stable gas source, and continuously guarantees the continuity of gas supply.

[0008] As a further improvement of the present invention, it also includes a first flow monitoring device disposed in the first gas supply pipeline. The first flow monitoring device is electrically connected to the control unit. The first flow monitoring device is used to monitor the gas flow rate of the first gas supply pipeline and feed back the monitoring result of the gas flow rate of the first gas supply pipeline to the control unit. By installing the first flow monitoring device in the first gas supply pipeline, the gas flow rate of the first gas supply pipeline can be accurately captured, providing the control unit with real and reliable gas flow rate data of the first gas supply pipeline. By electrically connecting the first flow monitoring device to the control unit, the monitoring result can be fed back in real time, allowing the control unit to promptly detect whether the gas flow rate of the first gas supply pipeline is abnormal, avoiding gas pressure fluctuations caused by data delays, ensuring that the control unit can promptly and accurately compare the gas flow rate with the preset threshold, and thus accurately control the opening and closing of the first control valve, effectively maintaining the stability of the gas supply in the first gas supply pipeline.

[0009] As a further improvement of the present invention, it also includes a second flow monitoring device installed in the second gas supply pipeline. The second flow monitoring device is electrically connected to the control unit. The second flow monitoring device is used to monitor the gas flow rate of the second gas supply pipeline and feeds back the monitoring results of the gas flow rate of the second gas supply pipeline to the control unit. By installing the second flow monitoring device in the second gas supply pipeline, the gas flow rate of the second gas supply pipeline can be accurately captured, providing the control unit with real and accurate gas flow rate data of the second gas supply pipeline. By electrically connecting the second flow monitoring device to the control unit, the monitoring results can be fed back in real time, allowing the control unit to detect abnormal gas flow in the second gas supply pipeline in a timely manner, avoiding gas pressure fluctuations caused by data delays, and ensuring that the control unit can control the opening and closing of the second control valve in a timely and accurate manner.

[0010] As a further improvement of the present invention, both the first control valve and the second control valve are butterfly valves. By setting the first control valve and the second control valve as butterfly valves, the butterfly valves can open and close quickly, and can respond quickly to the control unit commands when the gas supply pipeline flow is abnormal, so as to complete the valve opening and closing in a timely manner and ensure efficient gas supply switching.

[0011] The present invention also provides a method for using the aforementioned system for improving the gas supply stability of sintering desulfurization and denitrification equipment, comprising the following steps: real-time monitoring of the gas flow rate of the first gas supply pipeline and the second gas supply pipeline; when the gas flow rate of both the first gas supply pipeline and the second gas supply pipeline is higher than or equal to a preset threshold, opening the first control valve and the second control valve, allowing gas to be supplied simultaneously by the first gas supply pipeline and the second gas supply pipeline; when the gas flow rate of the first gas supply pipeline is less than the preset threshold, closing the first control valve of the first gas supply pipeline, allowing gas to be supplied solely by the second gas supply pipeline; when the gas flow rate of the second gas supply pipeline is less than the preset threshold, closing the second control valve of the second gas supply pipeline, allowing gas to be supplied solely by the first gas supply pipeline. By monitoring the gas flow rate of the first and second gas supply pipelines in real time, the gas source status can be grasped in a timely manner, providing a precise basis for adjusting the gas supply mode. When the gas flow rates of both the first and second gas supply pipelines meet the standards, gas is supplied simultaneously, which can coordinate to meet the gas demand of the sintering desulfurization and denitrification equipment. When the flow rate of a single gas supply pipeline is insufficient, the corresponding gas supply pipeline is precisely shut off, and the other gas supply pipeline supplies gas separately, ensuring that the sintering desulfurization and denitrification equipment always has a stable gas source input and preventing the sintering desulfurization and denitrification equipment from shutting down due to gas source problems.

[0012] As a further improvement of the present invention: the first gas supply pipeline is connected between the first blast furnace clean gas main and the sintering desulfurization and denitrification equipment, and the second gas supply pipeline is connected between the second blast furnace clean gas main and the sintering desulfurization and denitrification equipment. By constructing dual independent gas source paths for the first and second gas supply pipelines, and with the first and second gas supply pipelines respectively connected to the first and second blast furnace clean gas mains, shutdowns caused by interruption or insufficient pressure in a single gas supply pipeline are prevented, effectively ensuring the continuity of gas supply to the sintering desulfurization and denitrification equipment.

[0013] As a further improvement of the present invention, the real-time monitoring of the gas flow rate of the first and second gas supply pipelines specifically includes: a first flow monitoring device monitoring the gas flow rate of the first gas supply pipeline in real time; and a second flow monitoring device monitoring the gas flow rate of the second gas supply pipeline in real time. By using the first and second flow monitoring devices to monitor the gas flow rate of the first and second gas supply pipelines in real time, the gas flow rate status of each of the two gas supply pipelines can be accurately grasped, and abnormal gas flow rates can be detected in a timely manner. This provides accurate data support for the control unit to adjust the opening and closing of the first and second control valves, thereby further maintaining stable gas supply.

[0014] As a further improvement of the present invention: the first flow monitoring device and the second flow monitoring device are electrically connected to the control unit respectively. The first flow monitoring device feeds back the monitoring result of the gas flow rate of the first gas supply pipeline to the control unit, and the second flow monitoring device feeds back the monitoring result of the gas flow rate of the second gas supply pipeline to the control unit. By electrically connecting the first flow monitoring device and the second flow monitoring device to the control unit respectively and feeding back the monitoring results, it can be ensured that the gas flow data is transmitted to the control unit in real time and accurately, so that the control unit can fully grasp the gas flow status of the two gas supply pipelines.

[0015] As a further improvement of the present invention: the first control valve and the second control valve are electrically connected to the control unit, which is used to compare the gas flow rates of the first and second gas supply pipelines with preset thresholds, and control the opening and closing of the first and second control valves according to the comparison results. By electrically connecting the first and second control valves to the control unit, the control unit can directly and quickly control the opening and closing of the first and second control valves, providing timely response; by comparing the gas flow rates of the first and second gas supply pipelines with preset thresholds and controlling the opening and closing of the first and second control valves according to the comparison results, the gas supply path can be adjusted in a timely manner.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention provides a dual gas supply system, consisting of a first gas supply pipeline and a second gas supply pipeline, connected to the first and second blast furnace clean gas mains respectively. This avoids gas supply interruptions caused by fluctuations in the furnace condition of a single blast furnace when using a single gas supply system. Furthermore, by incorporating a first control valve, a second control valve, and a control unit, the control unit compares the gas flow rates of the first and second gas supply pipelines with preset thresholds. Based on the comparison results, it precisely controls the opening and closing of the first and second control valves, enabling timely switching of the gas supply path. This ensures stable gas flow to the sintering desulfurization and denitrification equipment, thereby maintaining stable gas pressure. This effectively prevents flameout and shutdown of the sintering desulfurization and denitrification equipment due to insufficient pressure, ensuring continuous and reliable operation of the equipment.

[0018] 2. The control unit of this invention uses "whether the gas flow rate in the pipeline is lower than a preset threshold" as the judgment standard. Once the gas flow rate of the first or second gas supply pipeline is below the standard, it immediately controls the corresponding first or second control valve to close, which can quickly cut off the gas supply path with insufficient flow and prevent it from lowering the overall gas supply pressure. Secondly, only the gas supply pipeline with abnormal gas flow is closed, while the other gas supply pipeline with normal gas flow can continue to supply gas, ensuring that the sintering desulfurization and denitrification equipment always has a stable gas source input, preventing the sintering desulfurization and denitrification equipment from experiencing unstable gas pressure and shutdown due to insufficient gas flow in a single gas supply pipeline. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the first control valve and the second control valve of the present invention when they are opened simultaneously.

[0020] Figure 2 This is a schematic diagram of the structure of the present invention when the first control valve is closed and the second control valve is open. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the structure of the present invention when the first control valve is open and the second control valve is closed. Figure 2 .

[0022] Figure label:

[0023] 1. First gas supply pipeline; 11. First blast furnace; 12. First blast furnace clean gas main pipeline; 13. First control valve;

[0024] 2. Second gas supply pipeline; 21. Second blast furnace; 22. Main clean gas pipeline for the second blast furnace; 23. Second control valve;

[0025] 3. Sintering desulfurization and denitrification equipment; 4. Gas holders; 5. Other users. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] Please see Figure 1-3 A system for improving the gas supply stability of sintering desulfurization and denitrification equipment 3, comprising:

[0029] The first gas supply pipeline 1 is connected between the first blast furnace clean gas main pipeline 12 and the sintering desulfurization and denitrification equipment 3;

[0030] The second gas supply pipeline 2 is connected between the second blast furnace clean gas main pipeline 22 and the sintering desulfurization and denitrification equipment 3;

[0031] The first control valve 13 is installed on the first gas supply line 1;

[0032] The second control valve 23 is installed on the second gas supply line 2;

[0033] The control unit is used to compare the gas flow rate of the first gas supply line 1 and the second gas supply line 2 with a preset threshold, and control the opening and closing of the first control valve 13 and the second control valve 23 according to the comparison result.

[0034] By setting up dual gas supply pipelines, namely the first gas supply pipeline 1 and the second gas supply pipeline 2, which are respectively connected to the first blast furnace clean gas main pipe 12 and the second blast furnace clean gas main pipe 22, the gas supply interruption caused by fluctuations in the furnace condition of a single gas supply is avoided. Secondly, by setting up the first control valve 13, the second control valve 23 and the control unit, the control unit can compare the gas flow of the first gas supply pipeline 1 and the second gas supply pipeline 2 with preset thresholds, and accurately control the opening and closing of the first control valve 13 and the second control valve 23 according to the comparison results. This allows for timely switching of the gas supply path, ensuring stable gas flow of the sintering desulfurization and denitrification equipment 3, thereby maintaining stable gas pressure. This effectively prevents the sintering desulfurization and denitrification equipment 3 from shutting down and extinguishing due to insufficient pressure, ensuring the continuous and reliable operation of the sintering desulfurization and denitrification equipment 3.

[0035] In some embodiments, the first blast furnace clean gas main 12 is connected to the first blast furnace 11, and the second blast furnace clean gas main 22 is connected to the second blast furnace 21; the first blast furnace 11 and the second blast furnace 21 are respectively connected to the gas holder 4 and other users 5 through pipelines.

[0036] In some embodiments, controlling the opening and closing of the first control valve 13 and the second control valve 23 based on the comparison result specifically includes:

[0037] When the gas flow rate of the first gas supply line 1 is less than the preset threshold, the control unit controls the first control valve 13 to close; when the gas flow rate of the second gas supply line 2 is less than the preset threshold, the control unit controls the second control valve 23 to close.

[0038] In this invention, the control unit uses "whether the gas flow rate in the pipeline is lower than a preset threshold" as the judgment standard. Once the gas flow rate of the first gas supply pipeline 1 or the second gas supply pipeline 2 is below the standard, it immediately controls the corresponding first control valve 13 or second control valve 23 to close, which can quickly cut off the gas supply path with insufficient flow and prevent it from lowering the overall gas supply pressure. Secondly, only the gas supply pipeline with abnormal gas flow is closed, while the other gas supply pipeline with normal gas flow can continue to supply gas, ensuring that the sintering desulfurization and denitrification equipment 3 always has a stable gas source input, preventing the sintering desulfurization and denitrification equipment 3 from experiencing unstable gas pressure and shutdown due to insufficient gas flow in a single gas supply pipeline.

[0039] In some embodiments, controlling the opening and closing of the first control valve 13 and the second control valve 23 based on the comparison result specifically includes:

[0040] like Figure 1 As shown, when the gas flow rate of the first gas supply pipeline 1 and the gas flow rate of the second gas supply pipeline 2 are both higher than or equal to the preset threshold, the first control valve 13 and the second control valve 23 are opened, and gas is supplied simultaneously by the first gas supply pipeline 1 and the second gas supply pipeline 2.

[0041] like Figure 2 As shown, when the gas flow rate of the first gas supply line 1 is less than the preset threshold, the control unit controls the first control valve 13 to close, and the second gas supply line 2 supplies gas alone.

[0042] like Figure 3 As shown, when the gas flow rate of the second gas supply line 2 is less than the preset threshold, the control unit controls the second control valve 23 to close, and the first gas supply line 1 supplies gas alone.

[0043] In this invention, when the gas flow rates of both the first gas supply pipeline 1 and the second gas supply pipeline 2 meet the standards, the first gas supply pipeline 1 and the second gas supply pipeline 2 supply gas simultaneously; when the gas flow rate of a single gas supply pipeline does not meet the standards, only the gas supply pipeline with the insufficient gas flow rate is shut down, and the other gas supply pipeline supplies gas separately, avoiding the failure of the gas supply pipeline from affecting the overall gas supply, ensuring that the sintering desulfurization and denitrification equipment 3 always has a stable gas source, continuously ensuring the continuity of gas supply, and effectively preventing the sintering desulfurization and denitrification equipment 3 from pressure instability and shutdown due to gas source problems.

[0044] In some embodiments, a first flow monitoring device is also included, which is electrically connected to the control unit. The first flow monitoring device is used to monitor the gas flow rate of the first gas supply pipeline 1 and to feed back the monitoring result of the gas flow rate of the first gas supply pipeline 1 to the control unit.

[0045] A first flow monitoring device is installed in the first gas supply pipeline 1, which can accurately capture the gas flow rate of the first gas supply pipeline 1 and provide the control unit with real and reliable gas flow rate data of the first gas supply pipeline 1. The first flow monitoring device is electrically connected to the control unit and can feed back the monitoring results in real time, so that the control unit can detect whether the gas flow rate of the first gas supply pipeline 1 is abnormal in a timely manner, avoid gas pressure fluctuations caused by data delay, and ensure that the control unit can accurately compare the gas flow rate with the preset threshold in a timely manner, thereby accurately controlling the opening and closing of the first control valve 13 and effectively maintaining the stability of the gas supply of the first gas supply pipeline 1.

[0046] In some embodiments, a second flow monitoring device is also included, which is electrically connected to the control unit. The second flow monitoring device is used to monitor the gas flow rate of the second gas supply pipeline 2 and to feed back the monitoring result of the gas flow rate of the second gas supply pipeline 2 to the control unit.

[0047] A second flow monitoring device is installed in the second gas supply pipeline 2, which can accurately capture the gas flow rate of the second gas supply pipeline 2 and provide the control unit with real and accurate gas flow rate data of the second gas supply pipeline 2. The second flow monitoring device is electrically connected to the control unit and can provide real-time feedback of monitoring results, allowing the control unit to detect abnormal gas flow in the second gas supply pipeline 2 in a timely manner, avoiding gas pressure fluctuations caused by data delays, ensuring that the control unit can control the opening and closing of the second control valve 23 in a timely and accurate manner, preventing misoperation, and maintaining the stability of gas supply in the second gas supply pipeline 2.

[0048] In some embodiments, both the first control valve 13 and the second control valve 23 are butterfly valves.

[0049] By setting the first control valve 13 and the second control valve 23 as butterfly valves, the butterfly valves can open and close quickly, and can respond quickly to the control unit command when the gas supply pipeline flow is abnormal, and complete the valve opening and closing in a timely manner to ensure efficient gas supply switching; moreover, the butterfly valve has a simple structure and good sealing performance, which can reduce gas leakage in the gas supply pipeline and maintain stable gas supply pressure.

[0050] A method for using the aforementioned system to improve the gas supply stability of sintering desulfurization and denitrification equipment 3 includes the following steps:

[0051] Real-time monitoring of gas flow in the first gas supply pipeline 1 and the second gas supply pipeline 2;

[0052] When the gas flow rate of the first gas supply pipeline 1 and the gas flow rate of the second gas supply pipeline 2 are both higher than or equal to the preset threshold, the first control valve 13 and the second control valve 23 are opened, and gas is supplied simultaneously by the first gas supply pipeline 1 and the second gas supply pipeline 2.

[0053] When the gas flow rate of the first gas supply line 1 is less than the preset threshold, the first control valve 13 of the first gas supply line 1 is closed, and the second gas supply line 2 supplies gas alone.

[0054] When the gas flow rate of the second gas supply line 2 is less than the preset threshold, the second control valve 23 of the second gas supply line 2 is closed, and the first gas supply line 1 supplies gas alone.

[0055] By monitoring the gas flow rate of the first gas supply pipeline 1 and the second gas supply pipeline 2 in real time, the gas source status can be grasped in a timely manner, providing an accurate basis for adjusting the gas supply mode. When the gas flow rates of the first gas supply pipeline 1 and the second gas supply pipeline 2 both meet the standards, gas is supplied simultaneously, which can coordinate to meet the gas demand of the sintering desulfurization and denitrification equipment 3. When the flow rate of a single gas supply pipeline is insufficient, the corresponding gas supply pipeline is precisely shut off, and the other gas supply pipeline supplies gas separately, ensuring that the sintering desulfurization and denitrification equipment 3 always has a stable gas source input, continuously ensuring the gas supply continuity of the sintering desulfurization and denitrification equipment 3, and effectively preventing the shutdown of the sintering desulfurization and denitrification equipment 3 due to gas source problems.

[0056] In some embodiments, the first gas supply pipeline 1 is connected between the first blast furnace clean gas main 12 and the sintering desulfurization and denitrification equipment 3, and the second gas supply pipeline 2 is connected between the second blast furnace clean gas main 22 and the sintering desulfurization and denitrification equipment 3.

[0057] By constructing two independent gas source paths, namely the first gas supply pipeline 1 and the second gas supply pipeline 2, and connecting the first gas supply pipeline 1 and the second gas supply pipeline 2 to the first blast furnace clean gas main pipe 12 and the second blast furnace clean gas main pipe 22 respectively, the shutdown caused by the interruption of a single gas supply pipeline or insufficient pressure is prevented, and the gas supply continuity of the sintering desulfurization and denitrification equipment 3 is effectively guaranteed.

[0058] In some embodiments, the real-time monitoring of gas flow in the first gas supply pipeline 1 and the second gas supply pipeline 2 specifically includes:

[0059] The first flow monitoring device monitors the gas flow rate of the first gas supply pipeline 1 in real time;

[0060] The second flow monitoring device monitors the gas flow rate of the second gas supply pipeline 2 in real time.

[0061] By monitoring the gas flow of the first gas supply pipeline 1 and the second gas supply pipeline 2 in real time using the first flow monitoring device and the second flow monitoring device respectively, the gas flow status of the two gas supply pipelines can be accurately grasped, and abnormal gas flow can be detected in time. This provides accurate data support for the control unit to adjust the opening and closing of the first control valve 13 and the second control valve 23, further maintaining stable gas supply and ensuring the reliable operation of the sintering desulfurization and denitrification equipment 3.

[0062] In some embodiments, the first flow monitoring device and the second flow monitoring device are electrically connected to the control unit, the first flow monitoring device feeds back the monitoring result of the gas flow rate of the first gas supply pipeline 1 to the control unit, and the second flow monitoring device feeds back the monitoring result of the gas flow rate of the second gas supply pipeline 2 to the control unit.

[0063] By electrically connecting the first flow monitoring device and the second flow monitoring device to the control unit and feeding back the monitoring results, the gas flow data can be transmitted to the control unit in real time and accurately. This allows the control unit to fully grasp the gas flow status of the two gas supply pipelines, providing a reliable basis for accurately judging and controlling the opening and closing of the first control valve 13 and the second control valve 23, and effectively ensuring stable gas supply.

[0064] In some embodiments, the first control valve 13 and the second control valve 23 are electrically connected to a control unit, which is used to compare the gas flow rate of the first gas supply line 1 and the second gas supply line 2 with a preset threshold, and control the opening and closing of the first control valve 13 and the second control valve 23 according to the comparison result.

[0065] The first control valve 13 and the second control valve 23 are electrically connected to the control unit, respectively. The control unit can directly and quickly control the opening and closing of the first control valve 13 and the second control valve 23, and respond promptly. The control unit compares the gas flow rate of the first gas supply line 1 and the second gas supply line 2 with the preset threshold, and controls the opening and closing of the first control valve 13 and the second control valve 23 according to the comparison result. This can adjust the gas supply path in a timely manner and effectively maintain the stable gas supply of the sintering desulfurization and denitrification equipment 3.

[0066] The main functions of this invention are:

[0067] This invention utilizes a dual-supply pipeline system, consisting of a first gas supply pipeline and a second gas supply pipeline, connected to the main clean gas supply lines of the first and second blast furnaces respectively. This avoids the risk of gas supply interruption caused by the reliance on a single blast furnace in traditional single-supply pipeline systems. A first flow monitoring device and a second flow monitoring device accurately capture the gas flow rates of the first and second gas supply pipelines in real time, and these devices are electrically connected to the control unit, enabling immediate data feedback and providing a reliable basis for control decisions. The control unit precisely controls the opening and closing of the first and second control valves by comparing the gas flow rates of the first and second gas supply pipelines with preset thresholds. When the gas flow rates of both the first and second gas supply pipelines meet the standards, gas is supplied simultaneously. When the gas flow rate of either the first or second gas supply pipeline is insufficient, the pipeline with insufficient gas flow is quickly shut off, and the other gas supply pipeline supplies gas independently, ensuring stable gas supply pressure for the sintering desulfurization and denitrification equipment and effectively preventing shutdowns caused by gas source problems.

[0068] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0069] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0070] In the description of this invention, it should be understood that the terms "upper end face", "lower end face", "top", "bottom", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention. Therefore, they should not be construed as limiting the actual direction of use of this invention.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A system for improving the gas supply stability of sintering desulfurization and denitrification equipment, characterized in that: include: The first gas supply pipeline connects the main clean gas pipeline of the first blast furnace to the sintering desulfurization and denitrification equipment; The second gas supply pipeline connects the main clean gas pipeline of the second blast furnace to the sintering desulfurization and denitrification equipment. The first control valve is installed on the first gas supply pipeline; The second control valve is installed on the second gas supply pipeline; The control unit is used to compare the gas flow rate of the first gas supply line and the second gas supply line with a preset threshold, and control the opening and closing of the first control valve and the second control valve according to the comparison result.

2. The system for improving the gas supply stability of sintering desulfurization and denitrification equipment according to claim 1, characterized in that: The control of the opening and closing of the first control valve and the second control valve based on the comparison result specifically includes: When the gas flow rate in the first gas supply pipeline is less than a preset threshold, the control unit controls the first control valve to close; when the gas flow rate in the second gas supply pipeline is less than a preset threshold, the control unit controls the second control valve to close.

3. The system for improving the gas supply stability of sintering desulfurization and denitrification equipment according to claim 1, characterized in that: The control of the opening and closing of the first control valve and the second control valve based on the comparison result specifically includes: When the gas flow rate of the first gas supply pipeline and the gas flow rate of the second gas supply pipeline are both higher than or equal to the preset threshold, the first control valve and the second control valve are opened, and gas is supplied simultaneously by the first gas supply pipeline and the second gas supply pipeline. When the gas flow rate of the first gas supply pipeline is less than the preset threshold, the control unit controls the first control valve to close, and the second gas supply pipeline supplies gas alone. When the gas flow rate of the second gas supply pipeline is less than the preset threshold, the control unit controls the second control valve to close, and the first gas supply pipeline supplies gas alone.

4. The system for improving the gas supply stability of sintering desulfurization and denitrification equipment according to claim 3, characterized in that: It also includes a first flow monitoring device, which is electrically connected to the control unit. The first flow monitoring device is used to monitor the gas flow rate of the first gas supply pipeline and to feed back the monitoring results of the gas flow rate of the first gas supply pipeline to the control unit.

5. The system for improving the gas supply stability of sintering desulfurization and denitrification equipment according to claim 4, characterized in that: It also includes a second flow monitoring device, which is electrically connected to the control unit. The second flow monitoring device is used to monitor the gas flow rate of the second gas supply pipeline and to feed back the monitoring results of the gas flow rate of the second gas supply pipeline to the control unit.

6. The system for improving the gas supply stability of sintering desulfurization and denitrification equipment according to claim 1, characterized in that: The first blast furnace clean gas main is connected to the first blast furnace, and the second blast furnace clean gas main is connected to the second blast furnace; both the first control valve and the second control valve are butterfly valves.

7. A method for using a system for improving the gas supply stability of a sintering desulfurization and denitrification equipment as described in any one of claims 1-6, characterized in that: Includes the following steps: Real-time monitoring of gas flow in the first and second gas supply pipelines; When the gas flow rate of the first gas supply pipeline and the gas flow rate of the second gas supply pipeline are both higher than or equal to the preset threshold, the first control valve and the second control valve are opened, and gas is supplied simultaneously by the first gas supply pipeline and the second gas supply pipeline. When the gas flow rate of the first gas supply pipeline is less than the preset threshold, the first control valve of the first gas supply pipeline is closed, and the second gas supply pipeline supplies gas alone. When the gas flow rate of the second gas supply pipeline is less than the preset threshold, the second control valve of the second gas supply pipeline is closed, and the first gas supply pipeline supplies gas alone.

8. The method for improving the gas supply stability of sintering desulfurization and denitrification equipment according to claim 7, characterized in that: The first gas supply pipeline is connected between the first blast furnace clean gas main and the sintering desulfurization and denitrification equipment, and the second gas supply pipeline is connected between the second blast furnace clean gas main and the sintering desulfurization and denitrification equipment.

9. A method for improving the gas supply stability of sintering desulfurization and denitrification equipment according to claim 8, characterized in that: The real-time monitoring of gas flow in the first and second gas supply pipelines specifically includes: The first flow monitoring device monitors the gas flow rate of the first gas supply pipeline in real time and feeds back the monitoring results of the gas flow rate of the first gas supply pipeline to the control unit. The second flow monitoring device monitors the gas flow rate of the second gas supply pipeline in real time and feeds back the monitoring results of the gas flow rate of the second gas supply pipeline to the control unit.

10. A method for improving the gas supply stability of sintering desulfurization and denitrification equipment according to claim 9, characterized in that: The first control valve and the second control valve are electrically connected to the control unit. The control unit is used to compare the gas flow rate of the first gas supply line and the second gas supply line with a preset threshold, and control the opening and closing of the first control valve and the second control valve according to the comparison result.

Images