Smelting control method, device and system based on rich oxygen concentration, medium and terminal

Abstract

The invention discloses a smelting control method, device and system based on oxygen-enriched concentration, a medium and a terminal, relates to the technical field of metallurgical smelting, and mainly aims at improving the problem that in metallurgical smelting production systems such as bottom blowing and side blowing, as the in-furnace oxygen-enriched concentration needs to be used as a control target, the smelting cost is reduced. Therefore, the problem that the prior art taking the fixed oxygen supply amount as the control target is not applicable is solved. According to the target oxygen enrichment concentration under the current process parameters and the pure oxygen concentration in the oxygen supply station, the ratio of the pure oxygen flow to the air supply flow is calculated, and according to the ratio, the real-time pure oxygen flow and the real-time air supply flow fed into the smelting furnace are adjusted; therefore, the real-time oxygen-enriched concentration in the smelting furnace is always kept equal to the target oxygen-enriched concentration, and the method is suitable for a smelting production system which needs to take the in-furnace oxygen-enriched concentration as a control target.

Description

Technical Field

[0001] This application relates to the field of metallurgical smelting technology, and in particular to a smelting control method, apparatus, system, medium, and terminal based on oxygen concentration. Background Technology

[0002] Oxygen-enriched technology is commonly used in metallurgical smelting production systems to improve smelting efficiency and reduce energy consumption.

[0003] In existing technology, the total oxygen demand required for the combustion of concentrate, coal, and fuel oil is first calculated. Then, the total oxygen demand and the oxygen enrichment concentration setpoint are used to calculate the total oxygen mixed air demand. Next, the air demand and oxygen demand in the smelting system are calculated based on the oxygen enrichment concentration setpoint, the total oxygen mixed air demand, the oxygen purity supplied by the oxygen station, and the oxygen content in the air. Finally, the oxygen flow controller and air flow controller are set based on the air demand and oxygen demand. In other words, it is only applicable to metallurgical smelting production systems with a fixed oxygen supply as the control target.

[0004] However, in metallurgical smelting production systems such as bottom blowing and side blowing, the existing technology that uses a fixed oxygen supply as the control target is not applicable because the oxygen concentration entering the furnace must be used as the control target. Summary of the Invention

[0005] In view of this, this application provides a smelting control method, apparatus, system, medium, and terminal based on oxygen enrichment concentration. The main purpose is to improve the problem that the existing technology, which uses a fixed oxygen supply as the control target, is not applicable in metallurgical smelting production systems such as bottom blowing and side blowing, since the oxygen enrichment concentration entering the furnace must be used as the control target.

[0006] According to the first aspect of this application, a smelting control method based on oxygen enrichment concentration is provided, comprising:

[0007] Obtain the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters;

[0008] Based on the following formula, the ratio between the pure oxygen flow rate and the supply air flow rate is calculated according to the target oxygen enrichment concentration and the pure oxygen concentration.

[0009]

[0010] Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧 Indicates the concentration of pure oxygen;

[0011] Based on the ratio, the real-time pure oxygen flow rate and real-time air supply flow rate fed into the smelting furnace are adjusted to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration.

[0012] According to a second aspect of this application, a smelting control system based on oxygen enrichment concentration is provided, comprising:

[0013] Air supply ducts, pure oxygen ducts, oxygen-enriched ducts, and smelting furnaces;

[0014] The air supply duct connects the blower room and the oxygen-enriched duct for supplying air. An air supply flow metering device and an air supply regulating device are installed on the air supply duct. The air supply flow metering device is used to measure the air supply flow in the air supply duct, and the air supply regulating device is used to adjust the air supply flow in the air supply duct.

[0015] The pure oxygen pipeline connects the oxygen supply station and the oxygen-enriched pipeline for transporting pure oxygen. A pure oxygen flow metering device and a pure oxygen regulating device are installed on the pure oxygen pipeline. The pure oxygen flow metering device is used to measure the pure oxygen flow in the pure oxygen pipeline, and the pure oxygen regulating device is used to adjust the pure oxygen flow in the pure oxygen pipeline.

[0016] The air supply pipe and the pure oxygen pipe intersect at the starting position of the oxygen-enriched pipe. The oxygen-enriched pipe connects the starting position to the smelting furnace and is used to supply oxygen-enriched gas into the smelting furnace. An oxygen-enriched gas concentration detection device is installed on the oxygen-enriched pipe to measure the oxygen-enriched gas concentration in the oxygen-enriched pipe.

[0017] Preferably, the air supply pipe is further provided with an air supply cut-off device, the pure oxygen pipe is further provided with a pure oxygen cut-off device, and the oxygen-enriched pipe is further provided with an oxygen-enriched pressure detection device. The air supply cut-off device is used to cut off the air supply pipe to stop the air supply, the pure oxygen cut-off device is used to cut off the pure oxygen pipe to stop the pure oxygen supply, and the oxygen-enriched pressure detection device is used to measure the oxygen-enriched pressure in the oxygen-enriched pipe.

[0018] Air is supplied to the oxygen-enriched pipeline through the air supply pipeline. The air supply pressure in the oxygen-enriched pipeline is monitored by the oxygen-enriched pressure detection device. When the air supply pressure reaches the preset air supply pressure threshold, the pure oxygen cut-off device is triggered to open so that pure oxygen can be supplied to the oxygen-enriched pipeline.

[0019] When it is detected that the smelting production process requires the supply of oxygen-enriched air to be stopped, the pure oxygen cut-off device is triggered to open, so as to stop the supply of pure oxygen to the oxygen-enriched pipeline. Then, the air supply cut-off device is triggered to close, so as to stop the supply of air to the oxygen-enriched pipeline.

[0020] Preferably, the system further includes a cleaning gas pipeline;

[0021] The purging gas pipeline connects the purging gas supply station and the pure oxygen pipeline, so that before the oxygen supply station supplies oxygen into the pure oxygen pipeline, purging gas is supplied into the pure oxygen pipeline to purge impurities from the pipeline.

[0022] Preferably, the air supply duct is further equipped with an air supply pressure detection device and an air supply temperature detection device, and the pure oxygen duct is further equipped with a pure oxygen pressure detection device and a pure oxygen temperature detection device. The air supply pressure detection device is used to measure the air supply pressure in the air supply duct, the air supply temperature detection device is used to measure the air supply temperature in the air supply duct, the pure oxygen pressure detection device is used to measure the pure oxygen pressure in the pure oxygen duct, and the pure oxygen temperature detection device is used to measure the pure oxygen temperature in the pure oxygen duct.

[0023] Based on the air supply pressure measurement results of the air supply pressure detection device and the air supply temperature measurement results of the air supply temperature detection device, the air supply flow measurement results of the air supply flow metering device are subjected to a first temperature and pressure compensation process to obtain a corrected air supply flow, so as to carry out smelting control according to the corrected air supply flow. The first temperature and pressure compensation process is used to characterize the temperature and pressure compensation process of the air supply flow metering results.

[0024] Based on the pure oxygen pressure measurement results of the pure oxygen pressure detection device and the pure oxygen temperature measurement results of the pure oxygen temperature detection device, a second temperature and pressure compensation process is performed on the pure oxygen flow measurement results of the pure oxygen flow metering device to obtain a corrected pure oxygen flow rate, so as to carry out smelting control according to the corrected pure oxygen flow rate. The second temperature and pressure compensation process is used to characterize the temperature and pressure compensation process of the pure oxygen flow measurement results.

[0025] Preferably, the air supply duct is also equipped with an air supply check valve to prevent backfire from flowing into the air supply duct;

[0026] The pure oxygen pipeline is also equipped with a pure oxygen check valve to prevent backfire from flowing into the pure oxygen pipeline.

[0027] Preferably, the pure oxygen pipeline is also equipped with a pure oxygen flame arrester to ensure the safety of the pure oxygen pipeline in the event of backfire.

[0028] According to a third aspect of this application, a smelting control device based on oxygen enrichment concentration is provided, comprising:

[0029] The parameter acquisition module is used to obtain the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters.

[0030] The flow ratio calculation module is used to calculate the ratio between the pure oxygen flow rate and the supply air flow rate based on the target oxygen enrichment concentration and the pure oxygen concentration, according to the following formula.

[0031]

[0032] Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧 Indicates the concentration of pure oxygen;

[0033] The smelting control module is used to adjust the real-time pure oxygen flow rate and the real-time air supply flow rate into the smelting furnace according to the ratio, so as to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration.

[0034] According to a fourth aspect of this application, a storage medium is provided that stores at least one executable instruction, which causes a processor to perform operations corresponding to the above-described smelting control method based on oxygen enrichment concentration.

[0035] According to a fifth aspect of this application, a terminal is provided, comprising: a processor, a memory, a communication interface, and a communication bus, wherein the processor, the memory, and the communication interface communicate with each other via the communication bus;

[0036] The memory is used to store at least one executable instruction, which causes the processor to perform the operation corresponding to the above-described smelting control method based on oxygen concentration.

[0037] By employing the above technical solutions, the technical solutions provided in the embodiments of this application have at least the following advantages:

[0038] This application provides a smelting control method, apparatus, system, medium, and terminal based on oxygen enrichment concentration. First, the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters are obtained. Second, based on the following formula, the ratio between the pure oxygen flow rate and the air supply flow rate is calculated according to the target oxygen enrichment concentration and the pure oxygen concentration.

[0039]

[0040] Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧The ratio represents the pure oxygen concentration. Finally, based on this ratio, the real-time pure oxygen flow rate and the real-time air supply flow rate are adjusted in the smelting furnace to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration. Compared with the prior art, this embodiment calculates the ratio between the pure oxygen flow rate and the air supply flow rate based on the target oxygen enrichment concentration under the current process parameters and the pure oxygen concentration in the oxygen supply station. Based on this ratio, the real-time pure oxygen flow rate and the real-time air supply flow rate are adjusted in the smelting furnace, thereby ensuring that the real-time oxygen enrichment concentration in the smelting furnace is always equal to the target oxygen enrichment concentration. This is suitable for smelting production systems that require the oxygen enrichment concentration entering the furnace as a control target.

[0041] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0042] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0043] Figure 1 A flowchart of a smelting control method based on oxygen concentration provided in an embodiment of this application is shown;

[0044] Figure 2 The diagram shows the structural connection of a smelting control system based on oxygen concentration according to an embodiment of this application.

[0045] Figure 3 This paper shows a structural connection diagram of another smelting control system based on oxygen enrichment concentration provided in an embodiment of this application;

[0046] Figure 4 A block diagram of a smelting control device based on oxygen enrichment concentration provided in an embodiment of this application is shown.

[0047] Figure 5 A schematic diagram of the structure of a terminal provided in an embodiment of this application is shown. Detailed Implementation

[0048] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0049] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0050] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0051] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0053] The embodiments of this application can be applied to computer systems / servers that can operate with a wide range of other general-purpose or special-purpose computing system environments or configurations. Examples of well-known computing systems, environments, and / or configurations suitable for use with computer systems / servers include, but are not limited to: personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputer systems, mainframe computer systems, and distributed cloud computing environments that include any of the above systems, etc.

[0054] Computer systems / servers can be described in the general context of computer system executable instructions (such as program modules) executed by the computer system. Typically, program modules can include routines, programs, object programs, components, logic, data structures, etc., which perform specific tasks or implement specific abstract data types. Computer systems / servers can be implemented in distributed cloud computing environments, where tasks are performed by remote processing devices linked through a communication network. In distributed cloud computing environments, program modules can reside on local or remote computing system storage media, including storage devices.

[0055] This application provides a smelting control method based on oxygen concentration, such as... Figure 1 As shown, the method includes:

[0056] 101. Obtain the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters.

[0057] The process parameters include, but are not limited to, furnace type, fuel quantity, and concentrate quantity. The target oxygen concentration, i.e., the smelting control target, can be calculated based on these process parameters. The pure oxygen concentration characterizes the oxygen content of the oxygen supplied by the oxygen supply station. In this embodiment, the current execution end can be the smelting control system.

[0058] 102. Based on the following formula, calculate the ratio between the pure oxygen flow rate and the supply air flow rate, according to the target oxygen enrichment concentration and the pure oxygen concentration.

[0059]

[0060] F 富氧 =F 纯氧 +F 供风 ,

[0061] Among them, F 纯氧 F represents the pure oxygen flow rate (used to characterize the flow rate of oxygen supplied from the oxygen supply station to the smelting furnace). 供风 D represents the air supply flow rate (used to characterize the flow rate of air supplied from the blower room into the smelting furnace). 富氧 D represents the oxygen enrichment concentration (used to characterize the oxygen content of the oxygen-air mixture fed into the smelting furnace). 供风 D represents the oxygen concentration in the supply air (used to characterize the oxygen content of the air supplied to the blower room). 纯氧 F represents the pure oxygen concentration (used to characterize the oxygen content of the oxygen supplied by an oxygen supply station). 富氧 This indicates the oxygen enrichment flow rate (used to characterize the flow rate of the oxygen-air mixture fed into the smelting furnace).

[0062] 103. Adjust the real-time pure oxygen flow rate and real-time air supply flow rate into the smelting furnace according to the ratio to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration.

[0063] In this embodiment, the target oxygen enrichment concentration is used as the control target, which determines the ratio between pure oxygen flow rate and air supply flow rate. When the real-time oxygen enrichment concentration is lower than the target oxygen enrichment concentration, the real-time air supply flow rate can be reduced and the real-time pure oxygen flow rate can be increased proportionally to bring the real-time oxygen enrichment concentration to the same level as the target oxygen enrichment concentration. Similarly, when the real-time oxygen enrichment concentration is higher than the target oxygen enrichment concentration, the real-time pure oxygen flow rate can be reduced proportionally and the real-time air supply flow rate can be increased to lower the real-time oxygen enrichment concentration to the same level as the target oxygen enrichment concentration, thereby maintaining the real-time oxygen enrichment concentration in the smelting furnace at the same level as the target oxygen enrichment concentration.

[0064] This application provides a smelting control method based on oxygen enrichment concentration. First, the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters are obtained. Second, based on the following formula, the ratio between the pure oxygen flow rate and the air supply flow rate is calculated according to the target oxygen enrichment concentration and the pure oxygen concentration.

[0065]

[0066] Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧 The ratio represents the pure oxygen concentration. Finally, based on this ratio, the real-time pure oxygen flow rate and the real-time air supply flow rate are adjusted in the smelting furnace to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration. Compared with the prior art, this embodiment calculates the ratio between the pure oxygen flow rate and the air supply flow rate based on the target oxygen enrichment concentration under the current process parameters and the pure oxygen concentration in the oxygen supply station. Based on this ratio, the real-time pure oxygen flow rate and the real-time air supply flow rate are adjusted in the smelting furnace, thereby ensuring that the real-time oxygen enrichment concentration in the smelting furnace is always equal to the target oxygen enrichment concentration. This is suitable for smelting production systems that require the oxygen enrichment concentration entering the furnace as a control target.

[0067] This application provides a smelting control system based on oxygen concentration, such as... Figure 2 As shown, the system includes:

[0068] Air supply duct 21, pure oxygen duct 22, oxygen-enriched duct 23, and smelting furnace 24;

[0069] Air supply duct 21 connects the blower room and the oxygen-enriched duct for supplying air. An air supply flow metering device FE101 and an air supply regulating device FV101 are installed on the air supply duct. The air supply flow metering device is used to measure the air supply flow in the air supply duct, and the air supply regulating device is used to adjust the air supply flow in the air supply duct.

[0070] Pure oxygen pipeline 22 connects the oxygen supply station and the oxygen-enriched pipeline for transporting pure oxygen. Pure oxygen flow metering device FE102 and pure oxygen regulating device FV102 are installed on the pure oxygen pipeline. The pure oxygen flow metering device is used to measure the pure oxygen flow in the pure oxygen pipeline, and the pure oxygen regulating device is used to adjust the pure oxygen flow in the pure oxygen pipeline.

[0071] The air supply pipe and the pure oxygen pipe intersect at the starting position of the oxygen-enriched pipe. The oxygen-enriched pipe 23 connects the starting position to the smelting furnace 24 and is used to supply oxygen to the smelting furnace. An oxygen concentration detection device AE101 is installed on the oxygen-enriched pipe, which is used to measure the oxygen concentration in the oxygen-enriched pipe.

[0072] In this embodiment, the target oxygen enrichment concentration is used as the control target. The ratio between the pure oxygen flow rate and the supply air flow rate is further determined. The real-time oxygen enrichment concentration is monitored using an oxygen enrichment concentration detection device AE101 on the oxygen enrichment pipeline. When the real-time oxygen enrichment concentration is lower than the target concentration, the real-time supply air flow rate is reduced using an air supply regulating device FV101 on the supply air pipeline, and the real-time pure oxygen flow rate is increased proportionally using a pure oxygen regulating device FV102 on the pure oxygen pipeline to raise the real-time oxygen enrichment concentration to be equal to the target concentration. Similarly, the real-time oxygen enrichment concentration is monitored using an oxygen enrichment concentration detection device AE101 on the oxygen enrichment pipeline. When the real-time oxygen concentration is higher than the target oxygen concentration, the real-time pure oxygen flow rate is reduced proportionally by the pure oxygen regulating device FV102 on the pure oxygen pipeline, and the real-time air supply flow rate is increased by the air supply regulating device FV101 on the air supply pipeline, so as to reduce the real-time oxygen concentration to be equal to the target oxygen concentration, thereby maintaining the real-time oxygen concentration in the smelting furnace equal to the target oxygen concentration. At the same time, the air supply flow rate metering device FE101 on the air supply pipeline measures the air supply flow rate in the air supply pipeline, and the pure oxygen flow rate metering device FE102 on the pure oxygen pipeline measures the pure oxygen flow rate in the pure oxygen pipeline.

[0073] Compared with the prior art, the embodiments of this application calculate the ratio between the pure oxygen flow rate and the air supply flow rate based on the target oxygen enrichment concentration under the current process parameters and the pure oxygen concentration in the oxygen supply station, and adjust the real-time pure oxygen flow rate and the real-time air supply flow rate into the smelting furnace according to the ratio, thereby ensuring that the real-time oxygen enrichment concentration in the smelting furnace is always equal to the target oxygen enrichment concentration. This is applicable to metallurgical smelting production systems that require the oxygen enrichment concentration entering the furnace as the control target.

[0074] In one embodiment of this application, such as Figure 3As shown, the air supply pipeline is also equipped with an air supply cut-off device XV101, the pure oxygen pipeline is also equipped with a pure oxygen cut-off device XV102, and the oxygen enrichment pipeline is also equipped with an oxygen enrichment pressure detection device PT134. The air supply cut-off device is used to cut off the air supply pipeline to stop air supply, the pure oxygen cut-off device is used to cut off the pure oxygen pipeline to stop pure oxygen supply, and the oxygen enrichment pressure detection device is used to measure the oxygen enrichment pressure in the oxygen enrichment pipeline. Air is supplied to the oxygen enrichment pipeline through the air supply pipeline, and the oxygen enrichment pressure detection device monitors the air supply pressure in the oxygen enrichment pipeline. When the air supply pressure reaches a preset air supply pressure threshold, the pure oxygen cut-off device is triggered to open, so as to start supplying pure oxygen to the oxygen enrichment pipeline. When it is detected that the smelting production process requires stopping the supply of oxygen enrichment air, the pure oxygen cut-off device is triggered to close, so as to stop supplying pure oxygen to the oxygen enrichment pipeline, and then the air supply cut-off device is triggered to close, so as to stop supplying air to the oxygen enrichment pipeline.

[0075] In this embodiment, air is first supplied to the oxygen-enriched pipeline through the air supply pipeline, and the air supply pressure in the oxygen-enriched pipeline is monitored by an oxygen-enriched pressure detection device. When the air supply pressure reaches a preset air supply pressure threshold (e.g., 350 kPa), the pure oxygen cut-off device is triggered to open, thus connecting the pure oxygen pipeline and starting to supply pure oxygen to the oxygen-enriched pipeline. Furthermore, when it is detected that the smelting production process requires stopping the supply of oxygen-enriched air, the pure oxygen cut-off device is triggered to close, thus cutting off the pure oxygen pipeline and stopping the supply of pure oxygen to the oxygen-enriched pipeline. Then, the air supply cut-off device is triggered to close, thus cutting off the air supply pipeline and stopping the supply of air to the oxygen-enriched pipeline. This "supply air first, then supply oxygen; stop oxygen first, then stop air" control mode ensures the safety of air and oxygen supply.

[0076] In one embodiment of this application, such as Figure 3 As shown, the system also includes a purging gas pipeline; the purging gas pipeline connects the purging gas supply station and the pure oxygen pipeline, so that before the oxygen supply station supplies oxygen to the pure oxygen pipeline, purging gas is supplied to the pure oxygen pipeline to purge impurities from the pipeline.

[0077] Inert gases such as nitrogen can be used as purging gases. It should be noted that purging with inert gas before supplying oxygen to the pure oxygen pipeline is a crucial safety step. Due to the inert nature of inert gases, chemical reactions with other substances can be effectively avoided, thus protecting the safety of the pure oxygen pipeline.

[0078] Preferably, flame arresters and check valves can also be installed on the purging gas pipeline to prevent backfire and backflow caused by improper operation in the furnace, thereby ensuring the safety of the purging gas pipeline.

[0079] In one embodiment of this application, such as Figure 3As shown, the air supply duct is also equipped with an air supply pressure detection device PT101 and an air supply temperature detection device TE101, and the pure oxygen duct is also equipped with a pure oxygen pressure detection device PT102 and a pure oxygen temperature detection device TE102. The air supply pressure detection device measures the air supply pressure in the air supply duct, and the air supply temperature detection device measures the air supply temperature in the air supply duct. The pure oxygen pressure detection device measures the pure oxygen pressure in the pure oxygen duct, and the pure oxygen temperature detection device measures the pure oxygen temperature in the pure oxygen duct. Based on the air supply pressure measurement results of the air supply pressure detection device and the air supply temperature measurement results of the air supply temperature detection device, the air supply... The air supply flow rate measurement result of the flow metering device undergoes a first temperature and pressure compensation process to obtain a corrected air supply flow rate, which is then used for smelting control. The first temperature and pressure compensation process characterizes the temperature and pressure compensation process applied to the air supply flow rate measurement result. Based on the pure oxygen pressure measurement result of the pure oxygen pressure detection device and the pure oxygen temperature measurement result of the pure oxygen temperature detection device, the pure oxygen flow rate measurement result of the pure oxygen flow metering device undergoes a second temperature and pressure compensation process to obtain a corrected pure oxygen flow rate, which is then used for smelting control. The second temperature and pressure compensation process characterizes the temperature and pressure compensation process applied to the pure oxygen flow rate measurement result.

[0080] It should be noted that different pressures and temperatures will affect the gas flow rate measurement. To improve the accuracy of the measurement, in this embodiment, an air supply pressure detection device is installed on the air supply pipeline to measure the air supply pressure, and an air supply temperature detection device is installed to measure the air supply temperature. Based on the air supply pressure and temperature measurement results, the air supply flow rate measurement result of the air supply flow rate metering device is subjected to a first temperature and pressure compensation process to obtain the corrected air supply flow rate. Simultaneously, an oxygen pressure detection device is installed on the oxygen pipeline to measure the oxygen pressure, and an oxygen temperature detection device is installed to measure the oxygen temperature. Based on the oxygen pressure and temperature measurement results, the oxygen flow rate measurement result of the oxygen flow rate metering device is subjected to a second temperature and pressure compensation process to obtain the corrected oxygen flow rate. Finally, smelting control is performed based on the corrected air supply flow rate and the corrected oxygen flow rate, thereby improving the accuracy of smelting control.

[0081] In one embodiment of this application, such as Figure 3 As shown, the air supply duct is also equipped with an air supply check valve to prevent backfire from flowing into the air supply duct; the pure oxygen duct is also equipped with a pure oxygen check valve to prevent backfire from flowing into the pure oxygen duct.

[0082] In this embodiment of the application, by configuring an air supply check valve on the air supply pipeline, the backflow path can be cut off in time when backfire occurs, thereby ensuring the safety of the air supply pipeline; similarly, a pure oxygen check valve can be configured on the pure oxygen pipeline to ensure the safety of the pure oxygen pipeline.

[0083] In one embodiment of this application, such as Figure 3 As shown, the pure oxygen pipeline is also equipped with a pure oxygen flame arrestor to ensure the safety of the pure oxygen pipeline in the event of backfire.

[0084] It should be noted that, due to the flammable nature of oxygen, in this embodiment of the application, a pure oxygen flame arrestor is installed on the pure oxygen pipeline to extinguish the fire in time when backfire occurs, thereby further improving the safety of the pure oxygen pipeline.

[0085] This application provides a smelting control system based on oxygen enrichment concentration, including: an air supply pipeline, a pure oxygen pipeline, an oxygen-enriched pipeline, and a smelting furnace; the air supply pipeline connects a blower room and the oxygen-enriched pipeline for supplying air, and is equipped with an air supply flow metering device and an air supply regulating device, wherein the air supply flow metering device is used to measure the air supply flow in the air supply pipeline, and the air supply regulating device is used to adjust the air supply flow in the air supply pipeline; the pure oxygen pipeline connects the oxygen supply station and the oxygen-enriched pipeline for supplying pure oxygen, and is equipped with: an air supply flow metering device, a pure oxygen pipeline ... The pure oxygen pipeline is equipped with a pure oxygen flow metering device and a pure oxygen regulating device. The pure oxygen flow metering device measures the pure oxygen flow rate in the pure oxygen pipeline, and the pure oxygen regulating device adjusts the pure oxygen flow rate. The air supply pipeline intersects with the pure oxygen pipeline at the starting position of the oxygen-enriched pipeline. The oxygen-enriched pipeline connects the starting position to the smelting furnace and is used to supply oxygen enrichment into the smelting furnace. An oxygen enrichment concentration detection device is installed on the oxygen-enriched pipeline to measure the oxygen enrichment concentration in the pipeline. Compared with the prior art, this embodiment calculates the ratio between the pure oxygen flow rate and the air supply flow rate based on the target oxygen enrichment concentration under the current process parameters and the pure oxygen concentration in the oxygen supply station. Based on this ratio, the real-time pure oxygen flow rate and the real-time air supply flow rate are adjusted to ensure that the real-time oxygen enrichment concentration in the smelting furnace is always equal to the target oxygen enrichment concentration. This is suitable for smelting production systems where the oxygen enrichment concentration entering the furnace is used as a control target.

[0086] Furthermore, as a response to the above Figure 1 The implementation of the method shown in this application provides a smelting control device based on oxygen concentration, such as... Figure 4 As shown, the device includes:

[0087] Parameter acquisition module 31, flow ratio calculation module 32, smelting control module 33;

[0088] The parameter acquisition module 31 is used to acquire the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters.

[0089] The flow ratio calculation module 32 is used to calculate the ratio between the pure oxygen flow rate and the supply air flow rate based on the target oxygen enrichment concentration and the pure oxygen concentration, according to the following formula.

[0090]

[0091] Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧 Indicates the concentration of pure oxygen;

[0092] The smelting control module 33 is used to adjust the real-time pure oxygen flow rate and the real-time air supply flow rate into the smelting furnace according to the ratio, so as to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration.

[0093] This application provides a smelting control device based on oxygen enrichment concentration. First, it obtains the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters. Second, based on the following formula, it calculates the ratio between the pure oxygen flow rate and the air supply flow rate, according to the target oxygen enrichment concentration and the pure oxygen concentration.

[0094]

[0095] Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧 The ratio represents the pure oxygen concentration. Finally, based on this ratio, the real-time pure oxygen flow rate and the real-time air supply flow rate are adjusted in the smelting furnace to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration. Compared with the prior art, this embodiment calculates the ratio between the pure oxygen flow rate and the air supply flow rate based on the target oxygen enrichment concentration under the current process parameters and the pure oxygen concentration in the oxygen supply station. Based on this ratio, the real-time pure oxygen flow rate and the real-time air supply flow rate are adjusted in the smelting furnace, thereby ensuring that the real-time oxygen enrichment concentration in the smelting furnace is always equal to the target oxygen enrichment concentration. This is suitable for smelting production systems that require the oxygen enrichment concentration entering the furnace as a control target.

[0096] According to one embodiment of this application, a storage medium is provided, the storage medium storing at least one executable instruction, the computer-executable instruction being able to execute the smelting control method based on oxygen enrichment concentration in any of the above method embodiments.

[0097] Based on this understanding, the technical solution of this application can be embodied in the form of a software product. This software product can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, or portable hard drive), and includes several instructions to cause a computer device (such as a personal computer, server, or network device) to execute the methods described in the various implementation scenarios of this application.

[0098] Figure 5 The diagram shows a structural schematic of a terminal according to one embodiment of the present application. The specific embodiments of the present application do not limit the specific implementation of the terminal.

[0099] like Figure 5 As shown, the terminal may include: a processor 402, a communications interface 404, a memory 406, and a communications bus 408.

[0100] The processor 402, communication interface 404, and memory 406 communicate with each other via communication bus 408.

[0101] Communication interface 404 is used to communicate with other network elements such as clients or other servers.

[0102] The processor 402 is used to execute program 410, specifically the relevant steps in the above-described embodiment of the smelting control method based on oxygen concentration.

[0103] Specifically, program 410 may include program code that includes computer operation instructions.

[0104] Processor 402 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application. The computer device includes one or more processors, which may be processors of the same type, such as one or more CPUs; or they may be processors of different types, such as one or more CPUs and one or more ASICs.

[0105] Memory 406 is used to store program 410. Memory 406 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0106] Specifically, program 410 can be used to cause processor 402 to perform the following operations:

[0107] Obtain the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters;

[0108] Based on the following formula, the ratio between the pure oxygen flow rate and the supply air flow rate is calculated according to the target oxygen enrichment concentration and the pure oxygen concentration.

[0109]

[0110] Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧 Indicates the concentration of pure oxygen;

[0111] Based on the ratio, the real-time pure oxygen flow rate and real-time air supply flow rate fed into the smelting furnace are adjusted to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration.

[0112] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the physical equipment in the aforementioned oxygen-enriched smelting control method, supporting the operation of information processing programs and other software and / or programs. The network communication module is used to enable communication between the various components within the storage medium, as well as communication with other hardware and software in the information processing physical equipment.

[0113] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For system embodiments, since they largely correspond to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0114] The methods and systems of this application may be implemented in many ways. For example, they may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order of steps for the methods is for illustrative purposes only, and the steps of the methods of this application are not limited to the order specifically described above, unless otherwise specifically stated. Furthermore, in some embodiments, this application may also be implemented as a program recorded on a recording medium, the program including machine-readable instructions for implementing the methods according to this application. Thus, this application also covers recording media storing programs for performing the methods according to this application.

[0115] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0116] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A smelting control method based on oxygen concentration, characterized in that, include: Obtain the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters; Based on the following formula, the ratio between the pure oxygen flow rate and the supply air flow rate is calculated according to the target oxygen enrichment concentration and the pure oxygen concentration. Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧 Indicates the concentration of pure oxygen; Based on the ratio, the real-time pure oxygen flow rate and real-time air supply flow rate fed into the smelting furnace are adjusted to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration.

2. A smelting control system based on oxygen concentration, characterized in that, include: Air supply ducts, pure oxygen ducts, oxygen-enriched ducts, and smelting furnaces; The air supply duct connects the blower room and the oxygen-enriched duct for supplying air. An air supply flow metering device and an air supply regulating device are installed on the air supply duct. The air supply flow metering device is used to measure the air supply flow in the air supply duct, and the air supply regulating device is used to adjust the air supply flow in the air supply duct. The pure oxygen pipeline connects the oxygen supply station and the oxygen-enriched pipeline for transporting pure oxygen. A pure oxygen flow metering device and a pure oxygen regulating device are installed on the pure oxygen pipeline. The pure oxygen flow metering device is used to measure the pure oxygen flow in the pure oxygen pipeline, and the pure oxygen regulating device is used to adjust the pure oxygen flow in the pure oxygen pipeline. The air supply pipe and the pure oxygen pipe intersect at the starting position of the oxygen-enriched pipe. The oxygen-enriched pipe connects the starting position to the smelting furnace and is used to supply oxygen-enriched gas into the smelting furnace. An oxygen-enriched gas concentration detection device is installed on the oxygen-enriched pipe to measure the oxygen-enriched gas concentration in the oxygen-enriched pipe.

3. The system according to claim 2, characterized in that, The air supply pipeline is also equipped with an air supply cut-off device, the pure oxygen pipeline is also equipped with a pure oxygen cut-off device, and the oxygen-enriched pipeline is also equipped with an oxygen-enriched pressure detection device. The air supply cut-off device is used to cut off the air supply pipeline to stop the air supply, the pure oxygen cut-off device is used to cut off the pure oxygen pipeline to stop the pure oxygen supply, and the oxygen-enriched pressure detection device is used to measure the oxygen-enriched pressure in the oxygen-enriched pipeline. Air is supplied to the oxygen-enriched pipeline through the air supply pipeline. The air supply pressure in the oxygen-enriched pipeline is monitored by the oxygen-enriched pressure detection device. When the air supply pressure reaches the preset air supply pressure threshold, the pure oxygen cut-off device is triggered to open so that pure oxygen can be supplied to the oxygen-enriched pipeline. When it is detected that the smelting production process requires the supply of oxygen-enriched air to be stopped, the pure oxygen cut-off device is triggered to close, so as to stop the supply of pure oxygen to the oxygen-enriched pipeline. Then, the air supply cut-off device is triggered to close, so as to stop the supply of air to the oxygen-enriched pipeline.

4. The system according to claim 2, characterized in that, The system also includes a purge gas pipeline; The purging gas pipeline connects the purging gas supply station and the pure oxygen pipeline, so that before the oxygen supply station supplies oxygen into the pure oxygen pipeline, purging gas is supplied into the pure oxygen pipeline to purge impurities from the pipeline.

5. The system according to claim 2, characterized in that, The air supply duct is also equipped with an air supply pressure detection device and an air supply temperature detection device, and the pure oxygen duct is also equipped with a pure oxygen pressure detection device and a pure oxygen temperature detection device. The air supply pressure detection device is used to measure the air supply pressure in the air supply duct, the air supply temperature detection device is used to measure the air supply temperature in the air supply duct, the pure oxygen pressure detection device is used to measure the pure oxygen pressure in the pure oxygen duct, and the pure oxygen temperature detection device is used to measure the pure oxygen temperature in the pure oxygen duct. Based on the air supply pressure measurement results of the air supply pressure detection device and the air supply temperature measurement results of the air supply temperature detection device, the air supply flow measurement results of the air supply flow metering device are subjected to a first temperature and pressure compensation process to obtain a corrected air supply flow, so as to carry out smelting control according to the corrected air supply flow. The first temperature and pressure compensation process is used to characterize the temperature and pressure compensation process of the air supply flow metering results. Based on the pure oxygen pressure measurement results of the pure oxygen pressure detection device and the pure oxygen temperature measurement results of the pure oxygen temperature detection device, a second temperature and pressure compensation process is performed on the pure oxygen flow measurement results of the pure oxygen flow metering device to obtain a corrected pure oxygen flow rate, so as to carry out smelting control according to the corrected pure oxygen flow rate. The second temperature and pressure compensation process is used to characterize the temperature and pressure compensation process of the pure oxygen flow measurement results.

6. The system according to claim 2, characterized in that, The air supply duct is also equipped with an air supply check valve to prevent backfire from flowing back into the air supply duct; The pure oxygen pipeline is also equipped with a pure oxygen check valve to prevent backfire from flowing into the pure oxygen pipeline.

7. The system according to claim 2, characterized in that, The pure oxygen pipeline is also equipped with a pure oxygen flame arrestor to ensure the safety of the pure oxygen pipeline in the event of backfire.

8. A smelting control device based on oxygen concentration, characterized in that, include: The parameter acquisition module is used to obtain the target oxygen enrichment concentration and the pure oxygen concentration in the oxygen supply station under the current process parameters. The flow ratio calculation module is used to calculate the ratio between the pure oxygen flow rate and the supply air flow rate based on the target oxygen enrichment concentration and the pure oxygen concentration, according to the following formula. Among them, F 纯氧 F represents the pure oxygen flow rate. 供风 D represents the air supply flow rate. 富氧 D represents the oxygen concentration. 供风 D represents the oxygen concentration in the supplied air. 纯氧 Indicates the concentration of pure oxygen; The smelting control module is used to adjust the real-time pure oxygen flow rate and the real-time air supply flow rate into the smelting furnace according to the ratio, so as to maintain the real-time oxygen enrichment concentration in the smelting furnace equal to the target oxygen enrichment concentration.

9. A storage medium storing at least one executable instruction, characterized in that, The executable instructions cause the processor to perform the operations corresponding to the smelting control method based on oxygen concentration as described in claim 1.

10. A terminal, comprising: The processor, memory, communication interface, and communication bus are provided, wherein the processor, memory, and communication interface communicate with each other via the communication bus. The memory is used to store at least one executable instruction, characterized in that the executable instruction causes the processor to perform the operation corresponding to the smelting control method based on oxygen enrichment concentration as described in claim 1.

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