Regenerator flue gas control method, control system and computer readable storage medium

Abstract

This invention discloses a method, control system, and computer-readable storage medium for controlling flue gas in a heat regenerator. The method includes the following steps: obtaining a standard value Q1 for the combustion air content in a first heat regenerator and a standard value Y1 for the residual oxygen content in the flue gas of a second heat regenerator; obtaining a sampled value Q2 of the combustion air content in the first heat regenerator under abnormal operating conditions; adjusting the intake air flow rate of the combustion air in the first heat regenerator so that the sampled value Q3 of the combustion air content in the first heat regenerator after adjustment has the following relationship with the sampled value Q2 before adjustment: Q3 = A × (Q2 - Q1) + Q1; obtaining a sampled value Y2 of the residual oxygen content in the flue gas of the second heat regenerator under abnormal operating conditions, and calculating the difference ΔY between the standard value Y1 and the sampled value Y2; repeating the above steps at first set time intervals until the difference ΔY is within a set deviation range. This method reduces the risk of excessive nitrogen oxides in the flue gas under abnormal operating conditions by finely compensating and adjusting the combustion air flow rate.

Description

Technical Field

[0001] This invention relates to the field of glass furnace technology, and in particular to a method, control system, and computer-readable storage medium for controlling flue gas in a regenerator. Background Technology

[0002] For horizontal flame glass kilns, as the kiln age increases, particulate matter in the flue gas will accumulate in the regenerator's grid holes, affecting combustion efficiency and flue gas flow. Therefore, it is necessary to unblock the grid to improve the kiln's utilization efficiency.

[0003] Currently, the most effective methods for unclogging are manual slag removal and bottom firing. Manual slag removal involves manually entering the bottom of the regenerator and using tools to clear the grid from bottom to top. This method requires openings in the regenerator wall for worker access; as the openings open, air is drawn into the kiln, resulting in excess combustion air in the regenerator. This leads to a significant increase in nitrogen oxides and residual oxygen content in the flue gas, consequently causing sulfur dioxide and nitrogen oxide concentrations to exceed standards. Bottom firing involves inserting a flame torch into the regenerator and heating the grid holes from the bottom upwards. This melts sulfides and particulate matter adhering to the grid holes, allowing them to flow down and clear the blockage. However, the flame torch combustion directly consumes the combustion air in the regenerator, leading to insufficient combustion air, incomplete combustion of natural gas in the kiln, and a significant increase in sulfur dioxide concentration in the flue gas, resulting in sulfur dioxide concentrations exceeding standards. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a method for controlling flue gas in a regenerator, which maintains the combustion air and natural gas mixed in a predetermined ratio through fine-tuning and adjusting the flow rate of the combustion air, thereby reducing the risk of excessive nitrogen oxides and sulfur dioxide concentrations in the flue gas under abnormal operating conditions such as unblocking the grid.

[0005] The present invention also proposes a heat storage chamber flue gas control system having the above-mentioned heat storage chamber flue gas control method.

[0006] The present invention also proposes a computer-readable storage medium.

[0007] According to a first aspect of the present invention, a method for controlling flue gas in a heat storage chamber includes the following steps:

[0008] S100: Obtain the standard value Q1 of the combustion air content in the first heat storage chamber under normal operating conditions, and obtain the standard value Y1 of the residual oxygen content in the flue gas of the second heat storage chamber under normal operating conditions.

[0009] S200, in response to the first instruction, the sub-furnace is switched from normal operating condition to abnormal operating condition;

[0010] S300, Obtain the sampled value Q2 of the combustion air content in the first heat storage chamber under abnormal operating conditions;

[0011] S400. Adjust the air intake of the combustion air in the first heat storage chamber so that the sampled value Q3 of the combustion air content in the first heat storage chamber after adjustment has the following relationship with the sampled value Q2 of the combustion air content before adjustment: Q3=A×(Q2-Q1)+Q1, where A is the adjustment coefficient, and the adjustment coefficient is any value in the range of 0 to 1.

[0012] S500: Obtain the sampled value Y2 of the residual oxygen content in the flue gas of the second heat storage chamber under abnormal operating conditions, and calculate the difference ΔY between the standard value Y1 and the sampled value Y2.

[0013] S600. If the difference ΔY is within the set deviation range, the process ends. If the difference ΔY is outside the set deviation range, the process repeats steps S300 to S600 at intervals of a first set time until the difference ΔY is within the set deviation range.

[0014] The heat storage chamber flue gas control method according to embodiments of the present invention has at least the following beneficial effects:

[0015] The regenerator flue gas control method of this application uses the residual oxygen content in the flue gas of the second regenerator as an indicator to judge whether the adjustment of the combustion air in the first regenerator is in place. This allows for a more direct perception of the flue gas state of the second regenerator after combustion. If the residual oxygen content in the flue gas is too high, it indicates that there is excess combustion air in the combustion chamber, which may pose a risk of exceeding the conversion values ​​of sulfur dioxide and nitrogen oxides. If the residual oxygen content in the flue gas is too low, it indicates that the natural gas in the combustion chamber is not fully combusted, which may pose a risk of exceeding the conversion values ​​of sulfur dioxide.

[0016] Furthermore, when the combustion air content in the first regenerator fluctuates significantly, the aforementioned adjustment process can respond quickly in the early stages of the fluctuation by adjusting the intake volume of the combustion air, exhibiting a trend of larger adjustments in the early stages and smaller adjustments in the later stages, thus achieving dynamic and precise control. Through refined compensation and adjustment of the combustion air flow rate, the combustion air and natural gas are mixed and burned in a predetermined ratio, reducing the risk of excessive nitrogen oxides and sulfur dioxide levels in the flue gas under abnormal operating conditions such as unclogging the grid, ensuring that all flue gas indicators meet environmental protection requirements, and that all process indicators of the kiln are under control.

[0017] According to some embodiments of the present invention, the glass furnace includes a plurality of sub-furnaces, and also includes a main air intake channel and a main exhaust channel. The first regenerator chamber of each sub-furnace is connected to the main air intake channel, and the second regenerator chamber of each sub-furnace is connected to the main exhaust channel. The sub-furnace under the abnormal operating condition is designated as the first sub-furnace. In step S400, the following steps are also included:

[0018] S410. Adjust the air intake ratio of each of the first regenerator chambers, and / or adjust the total air intake volume of the total air intake channel to adjust the air intake volume of the combustion air in the first regenerator chamber of the first sub-furnace.

[0019] According to some embodiments of the present invention, in step S100, a standard value P1 of the pressure inside the kiln under normal operating conditions of the second regenerator is also obtained; in step S500, a sampled value P2 of the pressure inside the kiln under abnormal operating conditions of the second regenerator is also obtained, and the difference ΔP between the sampled value P2 and the standard value P1 is calculated; in step S600, if the difference ΔP is within a set deviation range and the difference ΔP is outside the set deviation range, it is determined that the glass kiln has malfunctioned, and a warning message is issued.

[0020] According to some embodiments of the present invention, the glass furnace further includes a condition switching switch, which is triggered before entering the first regenerator for unblocking to issue the first command.

[0021] According to some embodiments of the present invention, a combustion air detector is provided in the first heat storage chamber. The combustion air detector is used to detect the combustion air content in the first heat storage chamber. When the fluctuation of the combustion air content in the second heat storage chamber is greater than a set deviation range, the first command is issued.

[0022] According to some embodiments of the present invention, under normal operating conditions, the combustion air detector detects the combustion air content in the first heat storage chamber at second set time intervals, wherein the second set time interval is longer than the first set time interval.

[0023] According to a second aspect embodiment of the present invention, the heat storage chamber flue gas control system includes a flue gas analyzer, a combustion air detector, and a processor. The flue gas analyzer and the combustion air detector are respectively communicatively connected to the processor. The flue gas analyzer is disposed in a second heat storage chamber and is used to obtain the residual oxygen content of the flue gas in the second heat storage chamber. The combustion air detector is disposed in a first heat storage chamber and is used to obtain the combustion air content in the first heat storage chamber. The processor is capable of executing the heat storage chamber flue gas control method mentioned in the above embodiments.

[0024] According to some embodiments of the present invention, the flue gas analyzer includes a semiconductor laser capable of measuring the residual oxygen content of the flue gas.

[0025] According to some embodiments of the present invention, the heat storage chamber flue gas control system further includes a flow controller, which is disposed at the air inlet of the first heat storage chamber and is used to control the air volume of the combustion air.

[0026] According to a third aspect of the present invention, a computer-readable storage medium stores a computer program that, when executed by a processor, implements the heat storage chamber flue gas control method mentioned in the above embodiments.

[0027] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of the small furnace in an embodiment of the glass furnace of the present invention;

[0030] Figure 2 This is a schematic flowchart of the heat storage chamber flue gas control method according to an embodiment of the present invention.

[0031] Figure label:

[0032] First regenerator chamber 100; combustion chamber 200; second regenerator chamber 300. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0037] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] To facilitate understanding of the purpose of this invention, the background of the invention will be further explained first: With increasing environmental awareness, the emission and treatment of flue gas has become an insurmountable red line for manufacturing enterprises. As a traditional manufacturing industry, glass manufacturing enterprises must also move towards energy conservation and emission reduction. Under normal operating conditions, glass kilns are equipped with a complete flue gas treatment system, which can fine-tune the ratio of natural gas to combustion air in the kiln through methods such as temperature compensation, thereby ensuring that the flue gas emission indicators of the glass kiln meet environmental protection requirements. However, when abnormal operating conditions cause significant fluctuations in the ratio of natural gas to combustion air in the kiln, the flue gas treatment system often cannot respond quickly and achieve rapid regulation, resulting in a significant increase in the content of sulfides or nitrogen oxides in the flue gas, thus causing the flue gas emissions to exceed standards.

[0039] It should be noted that, as Figure 1 As shown, the combustion chamber 200 of the horizontal flame glass furnace of this application is equipped with regenerators on both sides for supplying air and exhausting flue gas to the combustion chamber 200. These regenerators switch directions periodically (i.e., the combustion side switches, exhaust becomes air supply, and air supply becomes exhaust, maximizing the utilization of flue gas heat). As the furnace age increases, particulate matter in the flue gas will deposit in the grid holes of the regenerators, affecting combustion efficiency and flue gas exhaust flow. Therefore, it is necessary to unclog the grid holes of the regenerators to improve the furnace utilization efficiency.

[0040] Currently, the most effective methods for unclogging are manual slag removal and bottom firing. Manual slag removal involves manually entering the bottom of the regenerator and using tools to clear the grid from bottom to top. This method requires openings in the regenerator wall for worker access; as the openings open, air is drawn into the kiln, resulting in excess combustion air in the regenerator. This leads to a significant increase in nitrogen oxides and residual oxygen content in the flue gas, consequently causing sulfur dioxide and nitrogen oxide concentrations to exceed standards. Bottom firing involves inserting a flame torch into the regenerator and heating the grid holes from the bottom upwards. This melts sulfides and particulate matter adhering to the grid holes, allowing them to flow down and clear the blockage. However, the flame torch combustion directly consumes the combustion air in the regenerator, leading to insufficient combustion air, incomplete combustion of natural gas in the kiln, and a significant increase in sulfur dioxide concentration in the flue gas, resulting in sulfur dioxide concentrations exceeding standards.

[0041] Therefore, to address the problem of excessive flue gas emissions under abnormal operating conditions in glass furnaces, this application proposes a method for controlling flue gas in regenerator chambers in its first aspect. This method is applied to glass furnaces, and more specifically, to the flue gas control system of regenerator chambers in glass furnaces. It should be noted that the glass furnace includes at least one sub-furnace, each sub-furnace including a combustion chamber 200 and two regenerator chambers. The two regenerator chambers are respectively located on both sides of the combustion chamber 200 and are connected to the combustion chamber 200. It is understood that one of the two regenerator chambers is used for air intake, and the other for flue gas exhaust. It should be noted that the regenerator chambers used for flue gas exhaust and air intake are not fixed but alternate. Figure 1 As shown in the example, after the left regenerator chamber receives air and the right regenerator chamber exhausts smoke for a period of time, the air intake direction is switched so that the right regenerator chamber receives air and the left regenerator chamber exhausts smoke. This allows the residual heat in the right regenerator chamber to heat the incoming air, maximizing the utilization of the heat in the flue gas. For ease of subsequent description, the regenerator chamber used for air intake is defined as the first regenerator chamber 100, and the regenerator chamber used for smoke exhaust is defined as the second regenerator chamber 300. It can be understood that the airflow in the glass furnace flows sequentially through the first regenerator chamber 100, the combustion chamber 200, and the second regenerator chamber 300.

[0042] Specifically, such as Figure 2 As shown, the method for controlling flue gas in the heat storage chamber includes the following steps:

[0043] S100: Obtain the standard value Q1 of the combustion air content in the first heat storage chamber 100 under normal operating conditions, and obtain the standard value Y1 of the residual oxygen content in the flue gas in the second heat storage chamber 300 under normal operating conditions.

[0044] It should be explained that under normal operating conditions, the residual oxygen content in the flue gas is relatively stable. This stable residual oxygen content is used as the standard value, and the specific value is obtained by detecting it with a flue gas analyzer. In other embodiments, the standard value of the residual oxygen content in the flue gas can also be calculated manually and then input into the flue gas control system of the regenerator. The standard value of the combustion air content is similar; it can be detected by a combustion air detector installed in the first regenerator 100 or set manually.

[0045] S200, in response to the first command, switches the sub-furnace from normal operating condition to abnormal operating condition;

[0046] It is understandable that the first command can be issued to a condition switching switch, which can be located in the control room of the entire glass furnace or outside the furnace door. Before the operator needs to enter the first regenerator 100 for manual unblocking, the condition switching switch is actively triggered to switch the sub-furnace to an abnormal operating condition. The regenerator flue gas control system then actively responds and regulates the residual oxygen content in the flue gas. Alternatively, the first command can also be issued to a combustion air detector located in the first regenerator 100. The combustion air detector detects the combustion air content in the first regenerator 100. When a significant increase or decrease in the combustion air content is detected, exceeding the normal fluctuation range (i.e., exceeding the set deviation range), the first command is issued to cause the flue gas control system to determine that the sub-furnace has entered an abnormal operating condition.

[0047] S300, Obtain the sampled value Q2 of the combustion air content in the first heat storage chamber 100 under abnormal operating conditions;

[0048] S400. Adjust the intake air volume of the combustion air in the first heat storage chamber 100 so that the sampled value Q3 of the combustion air content in the first heat storage chamber 100 after adjustment has the following relationship with the sampled value Q2 of the combustion air content before adjustment: Q3=A×(Q2-Q1)+Q1, where A is the adjustment coefficient, which is any value in the range of 0 to 1.

[0049] Understandably, the adjustment parameter A reflects the degree of aggression in the adjustment. The smaller the adjustment parameter, the more aggressive the adjustment; the larger the adjustment parameter, the more gradual the adjustment. The adjustment parameter A can be set manually or dynamically adjusted by measuring the change in the combustion air content in the first heat storage chamber 100. The greater the change, the smaller the adjustment parameter A, and the more aggressive the adjustment.

[0050] S500: Obtain the sampled value Y2 of the residual oxygen content in the flue gas of the second heat storage chamber 300 under abnormal operating conditions, and calculate the difference ΔY between the standard value Y1 and the sampled value Y2.

[0051] Upon entering abnormal operating conditions, the flue gas analyzer installed in the second heat storage chamber 300 continuously monitors the residual oxygen content of the flue gas in the second heat storage chamber 300, and feeds the numerical information back to the flue gas control system, which then calculates the difference ΔY in the residual oxygen content of the flue gas. The combustion air detector installed in the first heat storage chamber 100 continuously monitors the combustion air content in the first heat storage chamber 100.

[0052] S600. If the difference ΔY is within the set deviation range, the process ends and the sub-furnace returns to normal operation. If the difference ΔY is outside the set deviation range, the process repeats steps S300 to S600 at intervals of the first set time until the difference ΔY is within the set deviation range.

[0053] To facilitate understanding, the following examples with specific values ​​will be used for illustration. The specific values ​​of the above parameters will vary in actual use depending on the specifications of the kiln and the application scenario. They should not be interpreted as specific values ​​being a limitation on the above parameters.

[0054] For example, the standard value Q1 for the combustion air content in the first regenerator 100 is 50 L / min, and the standard value Y1 for the residual oxygen content in the flue gas in the second regenerator 300 is 5%. By manually clearing the regenerator compartments, a large amount of air enters the first regenerator 100 when an operator enters, causing a significant increase in the combustion air content. The sampled value Q2 of the combustion air content rises to 80 L / min. With an adjustment coefficient A = 0.5, the flue gas control system responds quickly and reduces the intake air volume in the first regenerator 100. After the first adjustment, the sampled value Q3 of the combustion air content should be 65 L / min, which is still higher than the standard value Q1. This results in excess combustion air in the combustion chamber 200, causing the sampled value Y2 of the residual oxygen content in the flue gas in the second regenerator 300 to rise to 7%. The difference ΔY equals 2%, exceeding the set deviation range of ±0.5%, thus triggering a second cycle. The sampling value Q2 of the combustion air content is 65 L / min. After the second adjustment, the sampling value Q3 of the combustion air content is 57.5 L / min. The sampling value Y2 drops to 6%, which is still outside the set deviation range. The cycle continues until the sampling value Y2 of the residual oxygen content in the flue gas drops below 50.5 L / min.

[0055] It should be noted that if the bottom-burning method is used for unblocking, the sampled value Q2 of the combustion air content in the first heat storage chamber 100 under abnormal operating conditions will be lower than the standard value Q1. Therefore, the air intake of the combustion air in the first heat storage chamber 100 should be increased to improve the combustion air content in the first heat storage chamber 100.

[0056] It should be noted that, according to the above adjustment process, the heat storage chamber flue gas control method of this application uses the residual oxygen content in the flue gas of the second heat storage chamber 300 as an indicator to judge whether the adjustment of the combustion air in the first heat storage chamber 100 is in place. This allows for a more direct perception of the flue gas state of the second heat storage chamber 300 after combustion. If the residual oxygen content in the flue gas is too high, it indicates that there is excess combustion air in the combustion chamber 200, which may pose a risk of exceeding the conversion values ​​of sulfur dioxide and nitrogen oxides. If the residual oxygen content in the flue gas is too low, it indicates that the natural gas in the combustion chamber 200 is not fully combusted, which may pose a risk of exceeding the conversion values ​​of sulfur dioxide.

[0057] In addition, when the combustion air content in the first heat storage chamber 100 fluctuates significantly, it can respond quickly in the early stage of the fluctuation through the above-mentioned adjustment process, and adjust the intake air volume of the combustion air by adjusting the adjustment. The adjustment shows a trend of large adjustment range in the early stage and small adjustment range in the later stage, thereby achieving dynamic and precise control.

[0058] Furthermore, the flue gas control method of this application can be applied to flue gas regulation under abnormal operating conditions such as manual slag removal and bottom firing. By finely compensating and adjusting the combustion air flow, the combustion air and natural gas are mixed and burned in a predetermined ratio, reducing the risk of nitrogen oxides and sulfur dioxide exceeding the standard in flue gas under abnormal operating conditions such as unblocking the grid. This ensures that all flue gas indicators meet environmental protection requirements and that all process indicators of the kiln are under control.

[0059] In some embodiments, the glass furnace includes multiple sub-furnaces and two gas passages, named the main air intake passage and the main exhaust passage, respectively. It should be noted that since the airflow direction in the gas passages changes periodically, the gas passages referred to by the main air intake passage and the main exhaust passage also change accordingly. The first regenerator chamber 100 of each sub-furnace is connected to the main air intake passage, and the second regenerator chamber 300 of each sub-furnace is connected to the main exhaust passage. The sub-furnace under abnormal operating conditions is designated as the first sub-furnace. Step S400 further includes the following steps:

[0060] S410. Adjust the air intake ratio of each first regenerator 100, and / or adjust the total air intake volume of the total air intake channel to adjust the air intake volume of the combustion air in the first regenerator 100 of the first sub-furnace.

[0061] It should be noted that after the combustion air flows in from the main air intake channel, it first needs to be proportioned before flowing into the first regenerator chamber 100 of each sub-furnace. Therefore, if the amount of combustion air to be adjusted is small, the amount of combustion air entering the first sub-furnace can be directly controlled by changing the air intake proportion of each first regenerator chamber 100. If the amount of combustion air to be adjusted is large, it is necessary to adjust the total air intake of the main air intake channel to adjust the air intake of the first sub-furnace.

[0062] In some embodiments, a pressure detector is also provided in the second regenerator 300, so that in step S100, the standard value P1 of the kiln pressure of the second regenerator 300 under normal operating conditions is obtained; in step S500, the sampled value P2 of the kiln pressure of the second regenerator 300 under abnormal operating conditions is obtained, and the difference ΔP between the sampled value P2 and the standard value P1 is calculated; in step S600, if the difference ΔP is within the set deviation range and the difference ΔP is outside the set deviation range, it is determined that the glass kiln has malfunctioned and a warning message is issued.

[0063] It should be explained that the fluctuation trend of kiln pressure is often positively correlated with the fluctuation trend of residual oxygen content in the flue gas. The higher the residual oxygen content, the greater the kiln pressure, and vice versa. Therefore, according to normal adjustment trends, as the residual oxygen content gradually approaches the standard value, the kiln pressure should also gradually approach the standard value. If the residual oxygen content has returned to the set deviation range of the standard value, but the kiln pressure has not yet been adjusted to the set deviation range of the standard value, it indicates that the small furnace may have a malfunction and needs to be troubleshooted. Warning information can be issued through warning lights, horns, etc., to facilitate timely intervention by operators.

[0064] Regarding the first command issued in step S200 above, the target of the command can be a condition switching switch. This switch can be located in the control room of the entire glass furnace or outside the furnace door. Before the operator needs to enter the first regenerator 100 for manual unblocking, the condition switching switch is actively triggered, causing the sub-furnace to switch to an abnormal operating condition. The regenerator flue gas control system then actively responds and regulates the residual oxygen content in the flue gas. Alternatively, the target of the first command can also be a combustion air detector located in the first regenerator 100. This detector detects the combustion air content in the first regenerator 100. When a significant increase or decrease in the combustion air content is detected, exceeding the normal fluctuation range (i.e., exceeding the set deviation range), the first command is issued to cause the flue gas control system to determine that the sub-furnace has entered an abnormal operating condition.

[0065] Furthermore, if a combustion air detector is used to continuously monitor the combustion air content in the first regenerator 100 to cope with abnormal operating conditions, the combustion air detector will monitor the combustion air content in the first regenerator 100 once every second set time interval. It should be noted that since the glass furnace is under normal operating conditions for a long time, the detection frequency of the combustion air detector does not need to be too high, and the second set time should be greater than the first set time for the flue gas analyzer to detect the residual oxygen content in the flue gas in the second regenerator 300 under abnormal operating conditions.

[0066] An embodiment of the second aspect of this application also proposes a regenerator flue gas control system applied in the aforementioned glass furnace. This regenerator flue gas control system includes a flue gas analyzer, a combustion air detector, and a processor. The flue gas analyzer and the combustion air detector are communicatively connected to the processor. The flue gas analyzer is located in the second regenerator 300 and is used to obtain the residual oxygen content of the flue gas in the second regenerator 300. The combustion air detector is located in the first regenerator 100 and is used to obtain the combustion air content in the first regenerator 100. The processor is capable of executing the regenerator flue gas control method described in any of the above embodiments.

[0067] The processor can be a Central Processing Unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0068] Furthermore, the flue gas analyzer of this application includes a semiconductor laser, which can be used to measure the residual oxygen content of flue gas and has the characteristics of high measurement accuracy, fast speed and strong adaptability.

[0069] Furthermore, the heat storage chamber flue gas control system of this application also includes a flow controller, which is installed at the air inlet of the first heat storage chamber 100 to control the air volume of the combustion air.

[0070] A third aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the heat storage chamber flue gas control method mentioned in any of the above embodiments.

[0071] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A method for controlling flue gas in a regenerator chamber, applied to a glass kiln, wherein the glass kiln includes at least one sub-furnace, the sub-furnace including a combustion chamber and two regenerator chambers disposed on both sides of the combustion chamber, one of the two regenerator chambers being used for air intake and the other for flue gas exhaust, the regenerator chamber used for air intake being designated as the first regenerator chamber, and the regenerator chamber used for flue gas exhaust being designated as the second regenerator chamber, the glass kiln further including a working condition switching switch, wherein before entering the first regenerator chamber for unblocking, the working condition switching switch is triggered to issue a first command, characterized in that... The heat storage chamber flue gas control method includes the following steps: S100: Obtain the standard value Q1 of the combustion air content in the first heat storage chamber under normal operating conditions, and obtain the standard value Y1 of the residual oxygen content in the flue gas of the second heat storage chamber under normal operating conditions. S200, in response to the first instruction, the sub-furnace is switched from normal operating condition to abnormal operating condition; S300, Obtain the sampled value Q2 of the combustion air content in the first heat storage chamber under abnormal operating conditions; S400. Adjust the air intake of the combustion air in the first heat storage chamber so that the sampled value Q3 of the combustion air content in the first heat storage chamber after adjustment has the following relationship with the sampled value Q2 of the combustion air content before adjustment: Q3=A×(Q2-Q1)+Q1, where A is the adjustment coefficient, and the adjustment coefficient is any value in the range of 0 to 1. S500: Obtain the sampled value Y2 of the residual oxygen content in the flue gas of the second heat storage chamber under abnormal operating conditions, and calculate the difference ΔY between the standard value Y1 and the sampled value Y2. S600. If the difference ΔY is within the set deviation range, the process ends and the sub-furnace returns to normal operation. If the difference ΔY is outside the set deviation range, the process repeats steps S300 to S600 at intervals of the first set time until the difference ΔY is within the set deviation range. In step S100, the standard value P1 of the pressure inside the second regenerator under normal operating conditions is also obtained; in step S500, the sampled value P2 of the pressure inside the second regenerator under abnormal operating conditions is also obtained, and the difference ΔP between the sampled value P2 and the standard value P1 is calculated; in step S600, if the difference ΔP is within the set deviation range and the difference ΔP is outside the set deviation range, it is determined that the glass furnace has malfunctioned and a warning message is issued.

2. The method for controlling flue gas in a heat storage chamber according to claim 1, characterized in that, The glass furnace includes multiple sub-furnaces, a main air intake channel, and a main exhaust channel. The first regenerator chamber of each sub-furnace is connected to the main air intake channel, and the second regenerator chamber of each sub-furnace is connected to the main exhaust channel. The sub-furnace under the abnormal operating condition is designated as the first sub-furnace. In step S400, the following steps are also included: S410. Adjust the air intake ratio of each of the first regenerator chambers, and / or adjust the total air intake volume of the total air intake channel to adjust the air intake volume of the combustion air in the first regenerator chamber of the first sub-furnace.

3. A regenerator flue gas control system, applied to glass kilns, characterized in that, The heat storage chamber flue gas control system includes a flue gas analyzer, a combustion air detector, and a processor. The flue gas analyzer and the combustion air detector are respectively communicatively connected to the processor. The flue gas analyzer is installed in the second heat storage chamber and is used to obtain the residual oxygen content of the flue gas in the second heat storage chamber. The combustion air detector is installed in the first heat storage chamber and is used to obtain the combustion air content in the first heat storage chamber. The processor is capable of executing the heat storage chamber flue gas control method as described in any one of claims 1 to 2.

4. The heat storage chamber flue gas control system according to claim 3, characterized in that, The flue gas analyzer includes a semiconductor laser, which can be used to measure the residual oxygen content of the flue gas.

5. The heat storage chamber flue gas control system according to claim 3, characterized in that, The heat storage chamber flue gas control system also includes a flow controller, which is located at the air inlet of the first heat storage chamber and is used to control the air volume of the combustion air.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the heat storage chamber flue gas control method according to any one of claims 1 to 2.

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