A combustion system, exhaust gas combustion control method, device, electronic equipment and computer readable storage medium

Abstract

The application provides a combustion system, an exhaust gas combustion control method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of exhaust gas treatment. The combustion system comprises a reaction chamber, an exhaust fan, a first control valve, a second control valve and a first pressure sensor. From the inlet to the outlet, the reaction chamber comprises a first combustion area on the inlet side and a second combustion area on the outlet side. Correspondingly, the reaction chamber is also provided with a first air supplement port and a second air supplement port, and compressed air is introduced into the first combustion area and the second combustion area through the first air supplement port and the second air supplement port, so as to sequentially react with the exhaust gas and realize staged combustion. In order to control the flow of the introduced compressed air and maintain the internal cavity pressure of the reaction chamber in a stable state, the first control valve and the second control valve are arranged on the air supply pipeline in communication with the first air supplement port and the second air supplement port.

Description

A combustion system, exhaust gas combustion control method, apparatus, electronic device, and computer-readable storage medium. Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and more specifically, to a combustion system, a waste gas combustion control method, an apparatus, an electronic device, and a computer-readable storage medium. Background Technology

[0002] With the continuous development of industrial production, waste gas treatment has become an important aspect of environmental protection. Among existing waste gas treatment methods, combustion is widely used due to its high efficiency and ease of operation. The basic principle of combustion is to decompose harmful gases into harmless substances through high temperatures, thereby achieving the purpose of purifying waste gas.

[0003] However, the inventors discovered that during combustion, the combustible components in the exhaust gas undergo a violent reaction at high temperatures, causing a sharp increase in pressure inside the furnace. This pressure increase not only affects combustion efficiency but may also damage equipment or even trigger an explosion. Summary of the Invention

[0004] The present invention aims to provide a combustion system, exhaust gas combustion control method, apparatus, electronic device, and computer-readable storage medium to ensure that exhaust gas can be fully combusted and purified and to prevent the risk of deflagration.

[0005] The combustion system includes a reaction chamber, an exhaust fan, a first control valve, a second control valve, and a first pressure sensor. The reaction chamber has an inlet for introducing exhaust gas and an outlet for discharging exhaust gas, with the exhaust fan positioned near the outlet. From the inlet to the outlet, the reaction chamber includes a first combustion zone on the inlet side and a second combustion zone on the outlet side. Correspondingly, the reaction chamber also has a first air supply port and a second air supply port, through which compressed air is introduced into the first and second combustion zones respectively, facilitating sequential reaction with the exhaust gas and achieving staged combustion. To facilitate control of the compressed air flow rate and maintain a stable internal pressure within the reaction chamber, the first and second control valves are respectively located on air supply pipelines connected to the first and second air supply ports. Attached Figure Description

[0006] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 is a schematic diagram of the combustion system provided in this embodiment;

[0008] Figure 2 is a schematic diagram of the combustion system provided in this embodiment;

[0009] Figure 3 is a schematic diagram of the combustion system provided in this embodiment;

[0010] Figure 4 is a schematic diagram of the combustion system provided in this embodiment;

[0011] Figure 5 is a schematic cross-sectional view of section AA in Figure 4 provided in this embodiment;

[0012] Figure 6 is a schematic diagram of the combustion system provided in this embodiment.

[0013] Figure 7 is a schematic cross-sectional view of the structure at BB in Figure 7 provided in this embodiment;

[0014] Figure 8 is a schematic diagram of another cross-sectional structure at point BB in Figure 8 provided in this embodiment;

[0015] Figure 9 is a flowchart illustrating the exhaust gas combustion control method provided in this embodiment;

[0016] Figure 10 is a schematic block diagram of the exhaust gas combustion control device provided in this embodiment;

[0017] Figure 11 is a block diagram of the structure of the electronic device provided in this embodiment.

[0018] Icons: 10-Combustion system; 20-Electronic equipment; 21-Memory; 23-Processor; 30-Exhaust gas combustion control device; 31-Acquisition module; 33-First control module; 35-Second control module; 100-Reaction chamber; 101-Inlet; 102-Outlet; 103-First air supply port; 104-Second air supply port; 105-Third air supply port; 106-Fourth air supply port; 110-Inner cylinder; 111-Third water inlet; 113-Fourth water inlet; 120-First water-cooling chamber; 130 - Outer cylinder; 131- First water inlet; 133- Second water inlet; 151- First channel; 153- Second channel; 210- First combustion zone; 230- Second combustion zone; 250- Third combustion zone; 300- Partition plate; 310- Second water cooling chamber; 400- Pressure relief pipe; 500- Exhaust fan; 610- First control valve; 630- Second control valve; 650- Third control valve; 710- First pressure sensor; 730- Second pressure sensor; 750- Third pressure sensor. Detailed Implementation

[0019] In related technologies, waste gas purification schemes that decompose harmful gases into harmless substances through combustion have the problem of violent reactions, rapid increases in furnace pressure, and the potential for explosions.

[0020] To address the aforementioned problems, the present invention provides a combustion system, a waste gas combustion control method, an apparatus, an electronic device 20, and a storage medium, which employs a staged combustion scheme to maintain a stable pressure within the reaction chamber 100, thereby ensuring stable combustion treatment of the waste gas.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] 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 further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, 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, and therefore should not be construed as a limitation of this invention.

[0025] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0027] Figure 1 is a schematic diagram of the combustion system 10 provided in this embodiment. The arrows in Figure 1 indicate the direction of exhaust gas flow. Referring to Figure 1, the present invention provides a combustion system 10, which is applied in the field of exhaust gas treatment technology. It includes a reaction chamber 100, an exhaust fan 500, a first control valve 610, a second control valve 630, and a first pressure sensor 710.

[0028] The reaction chamber 100 is provided with an inlet 101 for introducing waste gas and an outlet 102 for discharging waste gas. An exhaust fan 500 is positioned near the outlet 102 of the reaction chamber 100. In practical applications, the exhaust fan 500 reduces the air pressure inside the reaction chamber 100 by discharging the gas, creating a negative pressure zone. Based on this pressure difference, waste gas from outside the reaction chamber 100 flows into the reaction chamber 100 through the inlet 101, and after combustion within the reaction chamber, is discharged from the outlet 102. Furthermore, it should be noted that in the embodiments provided by this invention, the introduced waste gas can be a large flow of hydrogen or other highly flammable and explosive gases.

[0029] Based on the above, from inlet 101 to outlet 102, the reaction chamber 100 includes a first combustion zone 210 located on the inlet 101 side and a second combustion zone 230 located on the outlet 102 side. Correspondingly, the reaction chamber 100 is also provided with a first air supply port 103 and a second air supply port 104, respectively corresponding to the first combustion zone 210 and the second combustion zone 230. Therefore, compressed air is introduced into the first combustion zone 210 and the second combustion zone 230 via the first air supply port 103 and the second air supply port 104, respectively, to facilitate sequential reaction with the exhaust gas and achieve staged combustion.

[0030] To facilitate control of the compressed air flow rate and maintain a stable internal pressure in the reaction chamber 100, a first control valve 610 and a second control valve 630 are respectively installed on the air supply pipelines connected to the first air supply port 103 and the second air supply port 104. Furthermore, since the first combustion zone 210 is located adjacent to the inlet 101 and is situated in a high-temperature and high-concentration exhaust gas environment, the reaction between the compressed air and the exhaust gas is the primary reaction, resulting in significant pressure fluctuations. Therefore, a first pressure sensor 710 is installed within the first combustion zone 210 to acquire the first pressure value of the first combustion zone 210 within the reaction chamber 100.

[0031] In practical applications, based on the staged combustion in the first combustion zone 210 and the second combustion zone 230, and considering that the first combustion zone 210 is the primary reaction area, if the first pressure value indicates a potential risk of combustion and explosion in the first combustion zone 210, the operator can reduce the opening of the first control valve 610 to decrease the amount of compressed air supplied, reduce the amount of exhaust gas reacted, and lower the pressure in the reaction chamber 100. If the first pressure value indicates that the first combustion zone 210 is in a stable state and there is no risk of combustion and explosion in the exhaust gas, compressed air can continue to be supplied at the existing opening of the first control valve 610.

[0032] Furthermore, since the second control valve 630 is located near the outlet 102, it is generally in a normally open state, maintaining oxygen enrichment to ensure complete treatment of the exhaust gas and dilution to below the limit value. Correspondingly, a second pressure sensor 730 can also be installed at the outlet 102 of the reaction chamber 100, i.e., the second combustion zone 230, to obtain real-time pressure changes within the second combustion zone 230, ensuring normal combustion or dilution treatment at the outlet 102.

[0033] Referring again to Figure 1, to further achieve staged combustion, the reaction chamber 100 also includes a third combustion zone 250 located between the first combustion zone 210 and the second combustion zone 230. Furthermore, the reaction chamber 100 is also provided with a third air supply port 105 corresponding to the third combustion zone 250. Similar to the air supply port in the aforementioned embodiment, the third air supply port 105 is also used to supply compressed air to the third combustion zone 250. Accordingly, the combustion system 10 also includes a third control valve 650, which is located on the air supply pipeline connected to the third air supply port 105, to control the flow rate of compressed air entering the third combustion zone 250.

[0034] It should be further explained that, since the third combustion zone 250 is located between the first combustion zone 210 and the second combustion zone 230, the intensity of the reaction between the compressed air introduced by the third control valve 650 and the exhaust gas in the third combustion zone 250 is weaker than that in the first combustion zone 210, but stronger than that in the second combustion zone 230. This results in relatively significant pressure fluctuations and a risk of combustion and explosion. Therefore, the combustion system 10 also includes a third pressure sensor 750, which is used to acquire the second pressure value of the third combustion zone 250 within the reaction chamber 100. It is easy to understand that the exhaust gas in the first combustion zone 210, the third combustion zone 250, and the second combustion zone 230 respectively achieves partial, low-volume combustion, and complete treatment and dilution to below the limit value.

[0035] Based on the above, the addition of the third air inlet 105 and the third control valve 650 further controls the mixing ratio and combustion speed of exhaust gas and compressed air, reduces the pressure and temperature at a single air inlet (first air inlet 103 / second air inlet 104), reduces the risk of combustion explosion in the reaction chamber 100, and achieves staged combustion. In some other embodiments, to facilitate safer, more efficient, and more environmentally friendly staged combustion, the third combustion zone 250 may also include multiple sub-combustion zones arranged sequentially along the exhaust gas flow direction; correspondingly, the reaction chamber 100 may also be provided with multiple sub-air inlets, each used to introduce compressed air into multiple sub-combustion zones; correspondingly, the combustion system 10 may also include multiple regulating valves, used to respectively regulate the amount of compressed air introduced into the multiple sub-combustion zones through the multiple sub-air inlets. Optionally, any control valve before the second control valve 630 is an adjustable-opening control valve.

[0036] Referring to Figures 2 to 8, the present invention also provides another embodiment of the combustion system 10, which differs from the embodiment shown in Figure 2 in that the combustion system 10 further includes a partition plate 300 located within the reaction chamber 100. In this embodiment, the inlet 101 and the outlet 102 are located on opposite sides of the partition plate 300, and correspondingly, the first air supply port 103 and the second air supply port 104 are also located on opposite sides of the partition plate 300. Furthermore, the partition plate 300 cooperates with the inner wall of the reaction chamber 100 to form a U-shaped channel for guiding the exhaust gas, so that the exhaust gas introduced from the inlet 101 flows around the partition plate 300 and is then discharged from the outlet 102. In this process, the meandering airflow path increases the residence time of the exhaust gas in the reaction chamber 100, making the reaction more complete and the exhaust gas treatment efficiency higher. Similarly, the compressed air introduced into the first air supply port 103 and the second air supply port 104 still reacts with the exhaust gas sequentially to achieve staged combustion.

[0037] As shown in Figures 4 and 5, to further increase the flow path and residence time of the exhaust gas within the reaction chamber 100, the U-shaped channel is inverted. Specifically, the bottom wall of the reaction chamber 100 has an inlet 101 and an outlet 102, and there is a gap between the top wall of the reaction chamber 100 and the partition plate 300. Based on this, the exhaust gas enters from the inlet 101 on the bottom wall, rises from bottom to top on one side of the partition plate 300, reaches the top wall, and then crosses the gap between the partition plate 300 and the top wall to the other side of the partition plate 300 before being discharged from top to bottom. It is readily understood that in this embodiment, the first combustion zone 210 and the second combustion zone 230 are located on both sides of the partition plate 300, and the third combustion zone 250 is at least partially located at the gap.

[0038] As mentioned above, the first combustion zone 210 and the third combustion zone 250 are the main reaction zone and the secondary reaction zone, respectively. To improve the uniformity of the exhaust gas reaction and avoid excessive local reaction, there are multiple first air inlets 103, and these multiple first air inlets 103 are arranged at intervals along the circumference of the reaction chamber 100. Correspondingly, there are also multiple third air inlets 105, and these multiple third air inlets 105 are arranged at intervals along the circumference of the reaction chamber 100.

[0039] It should also be noted that when there are multiple third air supply ports 105, they can be equidistantly spaced along the circumference of the entire reaction chamber 100 to uniformly act on the exhaust gas flowing through the intervals; when there are multiple first air supply ports 103, they can be equidistantly spaced along one side of the inlet 101 of the reaction chamber 100 to uniformly act on the exhaust gas passing through the inlet 101. Furthermore, to further improve the oxygen enrichment level in the second region, as shown in Figure 5, a fourth air supply port 106 can also be equidistantly spaced on one side of the outlet 102 of the reaction chamber 100. Optionally, the first air supply ports 103 and the fourth air supply ports 106 are connected and disconnected from compressed air via the same control valve.

[0040] Considering the significant heat released during the exhaust gas reaction, please refer again to Figure 4. The reaction chamber 100 includes an inner cylinder 110 and an outer cylinder 130. The inner cavity of the inner cylinder 110 serves as a combustion chamber, used to introduce exhaust gas and compressed air for the combustion reaction. The outer cylinder 130 and the inner cylinder 110 together form a double-layer structure, with a first water-cooled chamber 120 formed between the inner wall of the outer cylinder 130 and the outer wall of the inner cylinder 110. It is easy to understand that the cooling water in the first water-cooled chamber 120 can effectively absorb the high-temperature heat generated by the combustion chamber, ensuring that the temperature of the reaction chamber 100 is controllable.

[0041] In some embodiments, to facilitate the recovery and utilization of the aforementioned high-temperature heat, the cooling water in the first water-cooled cavity 120 can be circulating water, as shown in Figure 3. The outer cylinder 130 is provided with a first water inlet 131 and a second water inlet 133 spaced vertically. It is readily understood that cooling water is introduced into the first water-cooled cavity 120 through one of the first water inlet 131 and the second water inlet 133, and the cooling water in the first water-cooled cavity 120 is discharged through the other of the two water inlets.

[0042] For example, when the first inlet 131 is located below the second inlet 133 as shown in Figure 3, the circulating water enters the first water-cooling chamber 120 through the first inlet 131 and flows from bottom to top to ensure sufficient contact with and absorption of the heat released from the inner wall of the combustion chamber, thereby maximizing heat exchange efficiency. Furthermore, it should be noted that when the water source is a circulating water tank, both the first inlet 131 and the second inlet 133 are connected to the water source; when the water source is a PCW (Polymerized Water Heater), one of the first inlet 131 and the second inlet 133 is connected to the water source, and the other is connected to a heating pipeline to supply heat to other processes, thereby improving energy utilization.

[0043] Accordingly, referring to Figures 6 to 8, to prevent the partition plate 300 from being burned by high temperature, the partition plate 300 has a hollow structure, and the inner cavity of the partition plate 300 is a second water-cooling cavity 310. It is easy to understand that the existence of the second water-cooling cavity 310 ensures that the temperature of the partition plate 300 is always within a safe range, thus extending the service life of the partition plate 300.

[0044] In some embodiments, as shown in Figure 7, a third water inlet 111 and a fourth water inlet 113 are provided vertically at the connection between the inner cylinder 110 and the partition plate 300. Furthermore, the second water-cooled cavity 310 is connected to the first water-cooled cavity 120 through the third water inlet 111 and the fourth water inlet 113. Based on this, the first water-cooled cavity 120 and the second water-cooled cavity 310 are interconnected in a common circulation, forming a multi-layered cooling system, improving overall thermal management efficiency, and ensuring a more uniform temperature distribution throughout the reaction chamber 100.

[0045] In some embodiments, as shown in Figure 8, the reaction chamber 100 is provided with a first channel 151 and a second channel 153 that penetrate the outer cylinder 130 and the inner cylinder 110 and communicate with the second water-cooled cavity 310. Based on this, the second water-cooled cavity 310 is similar to the first water-cooled cavity 120 and can be directly connected to the heating pipeline through either the first channel 151 or the second channel 153, serving as a heat source to supply other processes and improving energy utilization. To achieve maximum heat exchange efficiency, the channel structure is also similar to the aforementioned water inlet, that is, the first channel 151 and the second channel 153 are arranged vertically at intervals. Cooling water is introduced into the second water-cooled cavity 310 through one of the first channel 151 and the second channel 153, and the cooling water in the second water-cooled cavity 310 is discharged through the other of the first channel 151 and the second channel 153.

[0046] To further prevent explosions, the combustion system 10 also includes a pressure relief pipe 400 connected to the inner cavity of the reaction chamber 100. This pressure relief pipe 400 is designed with a pressure-controlled one-way pressure relief device as a protective measure to release the high pressure caused by the high-energy deflagration within the reaction chamber 100 to the atmosphere. Specifically, the pressure relief pipe 400 is equipped with a fourth pressure sensor, a pressure relief diaphragm, and a limit switch. The fourth pressure sensor is used to acquire instantaneous pressure fluctuations within the pressure relief pipe 400. The limit switch is communicatively connected to the fourth pressure sensor and is used to open or close the pressure relief diaphragm to connect or disconnect the inner cavity of the reaction chamber 100 from the external environment.

[0047] In practical applications, when the fourth pressure sensor detects that the instantaneous pressure fluctuation within the pressure relief pipe 400 exceeds a set value, it determines that the instantaneous pressure fluctuation within the reaction chamber 100 is too large. At this point, the fourth pressure sensor transmits a signal to the limit switch, triggering the limit switch to release the limiting effect on the pressure relief diaphragm, causing the diaphragm to open and allowing the high pressure caused by the high-energy deflagration to be directly released into the atmosphere. Optionally, the pressure relief diaphragm is made of aluminum.

[0048] Referring to Figure 9, this embodiment of the invention also provides an exhaust gas combustion control method, applied to the combustion system 10 of the aforementioned embodiment. This exhaust gas combustion control method may include the following steps:

[0049] In step S100, when exhaust gas is introduced into reaction chamber 100, the exhaust fan 500, the first control valve 610, and the second control valve 630 are opened.

[0050] Before step S100, the exhaust gas can be passed into a pre-washing device to remove water-soluble gases or dust before being passed into the reaction chamber 100.

[0051] In step S100, it should be noted that the opening of the first control valve 610 and the second control valve 630 allows for the continuous introduction of compressed air, ensuring a constant supply of compressed air to react with the exhaust gas as it passes through the reaction chamber 100. This ensures complete combustion and efficient purification of the exhaust gas. The exhaust fan 500 drives the exhaust gas into the reaction chamber 100 for combustion and decomposition, and directs it along the direction from inlet 101 to outlet 102, ultimately discharging it outside the reaction chamber 100.

[0052] Step S200: Obtain the first pressure value inside the reaction chamber 100.

[0053] In step S200, the first pressure value is based on the measurement value of the first pressure sensor 710, which is located within the first combustion zone 210. Considering the significant pressure fluctuations up to the inlet 101 of the reaction chamber 100, the first pressure sensor 710 may optionally be located on the side of the first combustion zone 210 closer to the inlet 101.

[0054] In step S300, if the difference between the first pressure value and the first preset pressure value is greater than the first preset range, the opening degree of the first control valve 610 is reduced.

[0055] In step S300, by determining whether the difference between the first pressure value and the first preset pressure value is within the first preset range, it can be confirmed whether the pressure inside the reaction chamber 100 is in a relatively stable state. If the difference between the first pressure value and the first preset pressure value is greater than the first preset range, it indicates that the pressure inside the reaction chamber 100 is unstable, and there is a risk of combustion and explosion of the exhaust gas. Based on this, the opening of the first control valve 610 is reduced to decrease the amount of compressed air supplied, thereby reducing the amount of exhaust gas reacting, i.e., oxygen-deficient combustion, thus achieving the beneficial effect of reducing the pressure inside the reaction chamber 100, maintaining pressure stability inside the reaction chamber 100, and preventing the risk of combustion and explosion.

[0056] Correspondingly, if the difference between the first pressure value and the first preset pressure value is less than or equal to the first preset range, it indicates that the pressure of the reaction chamber 100 is stable and there is no risk of combustion or explosion of the exhaust gas. Compressed air can continue to be introduced based on the existing opening of the first control valve 610.

[0057] It should be noted that, based on the mechanism of adjusting the opening of the first control valve 610 according to the feedback of the first pressure value in the reaction chamber 100, a PID (proportional-integral-derivative) control algorithm can be used to adjust the valve opening. Optionally, the preset range can be set according to 10% of the first preset pressure value.

[0058] Based on the above, taking a first preset pressure value of P as an example, when exhaust gas is introduced into the reaction chamber 100, compressed air is introduced into the first combustion zone 210 through the first control valve 610 to preferentially treat a small amount of local exhaust gas. At this time, the pressure value within the first combustion zone 210 is allowed to fluctuate within a range less than or equal to P + 10%P. If the first pressure sensor 710 detects a first pressure value greater than P + 10%P, it indicates that the pressure fluctuation within the first combustion zone 210 has increased. At this time, the opening of the first control valve 610 is reduced to decrease the amount of compressed air supplied, thereby reducing the amount of exhaust gas reacting, lowering the pressure in the reaction chamber 100, maintaining pressure stability within the reaction chamber 100, and preventing the risk of combustion and explosion.

[0059] Please refer again to Figure 9. The exhaust gas combustion control method provided in this application also includes:

[0060] Step S400: Obtain the second pressure value inside reaction chamber 100;

[0061] In step S400, the second pressure value is based on the measurement value of the third pressure sensor 750, which is located within the third combustion zone 250. Considering the significant pressure fluctuations up to the first combustion zone 210, the third pressure sensor 750 may optionally be located on the side of the third combustion zone 250 closer to the first combustion zone 210.

[0062] In step S500, if the difference between the second pressure value and the second preset pressure value is greater than the second preset range, the opening of the third control valve 650 is reduced.

[0063] In step S500, similarly to the above, by determining whether the difference between the second pressure value and the second preset pressure value is within the second preset range, it can be confirmed whether the pressure in the third combustion zone 250 is in a relatively stable state. If the difference between the second pressure value and the second preset pressure value is greater than the second preset range, it indicates that the pressure in the third combustion zone 250 is unstable, and there is a risk of combustion explosion in the exhaust gas. Based on this, reducing the opening of the third control valve 650 helps to reduce the amount of compressed air supplied here, reduce the reaction amount of exhaust gas here, thereby achieving the beneficial effect of reducing the pressure in the third combustion zone 250, maintaining the pressure stability in the third combustion zone 250, and preventing the risk of combustion explosion.

[0064] Correspondingly, if the difference between the second pressure value and the second preset pressure value is less than or equal to the second preset range, it indicates that the pressure in the third combustion zone 250 is stable and there is no risk of combustion or explosion of the exhaust gas. Compressed air can continue to be supplied based on the existing opening of the third control valve 650.

[0065] Furthermore, it should be noted that the execution order of steps S200 to S300 and steps S400 to S500 does not affect the final result. That is, steps S200 to S300 and steps S400 to S500 can be performed in a non-linear manner (simultaneously), and do not necessarily have to follow a strict order.

[0066] It should be noted that, similar to the aforementioned mechanism, the opening of the third control valve 650, based on feedback from the second pressure value within the reaction chamber 100, can also be adjusted using a PID control algorithm. Furthermore, it should be noted that in embodiments with three or more control valves, any control valve preceding the second control valve 630 is an adjustable-opening control valve. The opening of these valves is adjusted using a pressure feedback mechanism based on a control algorithm such as a PID control algorithm to control the supply of compressed air, maintaining stable pressure within the reaction chamber 100 and preventing deflagration. As for the second control valve 630 located at the outlet 102, it is ensured to be in a normally open state, maintaining oxygen-rich airflow to ensure complete combustion of the exhaust gas.

[0067] Furthermore, the specific step of controlling the reduction of the opening of the first control valve 610 is as follows: the opening of the first control valve 610 is reduced to a first preset opening. It is easy to understand that the setting of the first preset opening ensures that the first control valve 610 can always supply compressed air to the first combustion zone 210 while reducing the possibility of an explosion in the first combustion zone 210.

[0068] Accordingly, the specific step of controlling the reduction of the opening of the second control valve 630 is to control the reduction of the opening of the third control valve 650 to the second preset opening. Similar to the above, the setting of the second preset opening ensures that the third control valve 650 can always supply compressed air to the third combustion zone 250 while reducing the possibility of an explosion in the third combustion zone 250.

[0069] Based on the above, the value of the first preset opening degree is smaller than the value of the second preset opening degree. Based on this setting, in the first combustion zone 210, the flow rate of compressed air controlled by the first control valve 610 is relatively low, resulting in a relatively small amount of exhaust gas. Therefore, even if the pressure fluctuations are most significant in the first combustion zone 210, adjusting the opening degree of the first control valve 610 based on pressure feedback can keep the first pressure value relatively stable, preventing the risk of combustion explosion. Similarly, in the third combustion zone 250, the flow rate of compressed air controlled by the third control valve 650 is relatively large, resulting in a relatively large amount of exhaust gas. Likewise, even if the pressure fluctuations are relatively significant in the third combustion zone 250, adjusting the opening degree of the third control valve 650 based on pressure feedback can keep the second pressure value relatively stable, preventing the risk of combustion explosion.

[0070] To further ensure the safety of the reaction chamber 100, the time for the first control valve 610 to adjust from fully open to a first preset opening degree is defined as the first preset time, and the time for the third control valve 650 to adjust from fully open to a second preset opening degree is defined as the second preset time. Based on this, the first preset time is made shorter than the second preset time.

[0071] It is easy to understand that, based on the comparison between the first and second preset times, the first control valve 610 is more responsive, can adjust its opening more quickly, and can more accurately supply compressed air, thus better adapting to the first combustion zone 210 with high temperature and high concentration of exhaust gas. For example, the first preset time can be 100ms, and the second preset time can be 150ms.

[0072] Please refer to Figure 9 again. After step S300, that is, after the step of controlling the opening of the first control valve 610 to decrease if the difference between the first pressure value and the first preset pressure value is greater than the first preset range, the method further includes:

[0073] Step S600: Control the frequency of the exhaust fan 500 to be reduced.

[0074] In step S600, it is easy to understand that by reducing the frequency of the exhaust fan 500, the exhaust volume can be reduced. Based on this, the reaction chamber 100 has a negative pressure zone, and the negative pressure value of the negative pressure zone is always within the preset range, which facilitates the introduction of exhaust gas and compressed air.

[0075] For example, when the opening degrees of the first control valve 610 and the third control valve 650 are increased, the air flow rate and pressure in the reaction chamber 100 increase. At this time, the frequency of the exhaust fan 500 also increases accordingly to ensure timely discharge of purified waste gas. When the opening degrees of the first control valve 610 and the third control valve 650 are decreased, the air flow rate and pressure in the reaction chamber 100 decrease, and the frequency of the exhaust fan 500 also decreases accordingly to maintain a negative pressure zone in the reaction chamber 100 and ensure timely replenishment of compressed air.

[0076] Optionally, the specific steps for controlling the frequency of the exhaust fan 500 are as follows: control the frequency of the exhaust fan 500 to a preset frequency. This preset frequency corresponds to the first preset opening degree mentioned above.

[0077] Based on the above, the opening adjustment command of the first control valve 610 can be obtained before step S600, and this can be used as negative feedback for airflow adjustment. Based on the above feedback adjustment mechanism, the exhaust fan 500 can also use a PID control algorithm to adjust the frequency. Specifically, in the exhaust fan 500 system, the PID controller takes the pressure difference between the first pressure value and the first preset pressure value as the input, and effectively controls the load of the exhaust fan 500 by adjusting the output frequency of the frequency converter, thereby effectively controlling the airflow of the exhaust fan 500, and thus ensuring that the negative pressure value in the reaction chamber 100 is within the preset range.

[0078] It should be noted that both the exhaust fan 500 and the first control valve 610 are self-adjusted through a PID control algorithm, and the two can work together to ensure the orderly progress of staged combustion, maintain the pressure stability in the reaction chamber 100, and prevent the risk of combustion and explosion.

[0079] Additionally, it should be noted that during steps S100 to S600, i.e., while flowing through the high-temperature reaction chamber 100, the exhaust gas sequentially undergoes combustion reactions with the compressed air input through the first air inlet 103, the second air inlet 104, and the third air inlet 105, thereby achieving purification. After step S600, the purified exhaust gas can enter a water tank or a scrubbing tower for cooling before being discharged; this is not limited to this step.

[0080] Please refer to Figure 10. In order to perform the possible steps of the exhaust gas combustion control method provided in the above embodiments, this embodiment of the invention provides an exhaust gas combustion control device 30, which is applied to the combustion system 10 in the aforementioned embodiments to perform the exhaust gas combustion control method described above. It should be noted that the exhaust gas combustion control device 30 provided in this embodiment has the same basic principle and technical effects as those in the above embodiments. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above embodiments.

[0081] Specifically, the exhaust gas combustion control device 30 provided in this embodiment may include an acquisition module 31, a first control module 33, and a second control module 35.

[0082] The acquisition module 31 is used to acquire the first pressure value inside the reaction chamber 100. Optionally, the acquisition module 31 can be used to execute step S100 in the above control method to achieve the corresponding technical effect.

[0083] The first control module 33 is used to control the opening of the exhaust fan 500, the first control valve 610, and the second control valve 630. Optionally, the first control module 33 can specifically be used to execute step S200 in the above control method to achieve the corresponding technical effect.

[0084] The second control module 35 is used to control and reduce the opening degree of the first control valve 610 when the difference between the first pressure value and the first preset pressure value is greater than the first preset range. Optionally, the second control module 35 can specifically be used to execute step S300 in the above control method to achieve the corresponding technical effect.

[0085] Furthermore, the acquisition module 31 is also used to acquire a second pressure value within the reaction chamber 100. That is, the acquisition module 31 is also used to execute step S400 in the above control method to achieve the corresponding technical effect. Correspondingly, the first control module 33 is also used to control the opening of the third control valve 650. In practical applications, the first control module 33 is used to control the opening of the third control valve 650 while controlling the opening of the exhaust fan 500, the first control valve 610, and the second control valve 630. Correspondingly, the second control module 35 is also used to control the reduction of the opening degree of the third control valve 650 if the difference between the second pressure value and the second preset pressure value is greater than the second preset range. That is, the second control module 35 is also used to execute step S500 in the above control method to achieve the corresponding technical effect.

[0086] Additionally, please refer to Figure 11, which is a schematic block diagram of the electronic device 20 provided in this embodiment. The present invention also provides an electronic device 20, which may further include a memory 21 and one or more processors 23.

[0087] The memory 21 and processor 23 are electrically connected directly or indirectly to enable data transmission or interaction. For example, these components can be electrically connected to each other via one or more communication buses or signal lines. The exhaust gas combustion control device 30 includes at least one software function module that can be stored in the memory 21 or embedded in the operating system (OS) of a server in the form of software or firmware. The processor 23 is used to execute the executable modules stored in the memory 21, such as the software function modules and computer programs included in the exhaust gas combustion control device 30.

[0088] The memory 21 may be, but is not limited to, random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), etc. The memory 21 stores computer program code, which includes computer instructions. When one or more processors 23 execute the computer instructions, the processors 23 execute the exhaust gas combustion control method.

[0089] In addition, some embodiments of the present invention also provide a computer-readable storage medium storing a computer program, which, when executed by processor 23, implements the air conditioner control method provided in any of the above embodiments.

[0090] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0091] In addition, the functional modules in the various embodiments of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0092] If the functionality is implemented as a software module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0093] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for controlling exhaust gas combustion in a combustion system, wherein the combustion system (10) includes a reaction chamber (100), an exhaust fan (500), a first control valve (610), a second control valve (630), and a first pressure sensor (710); wherein, The reaction chamber (100) is provided with an inlet (101) for introducing exhaust gas and an outlet (102) for discharging exhaust gas. The exhaust fan (500) is located near the outlet (102). From the inlet (101) to the outlet (102), the reaction chamber (100) includes a first combustion zone (210) located on the side of the inlet (101) and a second combustion zone (230) located on the side of the outlet (102). The reaction chamber (100) is also provided with a first air supply port (103) and a second air supply port (104). The exhaust gas is introduced into the first combustion zone through the first air supply port (103) and the second air supply port (104). Compressed air is supplied to the combustion zone (210) and the second combustion zone (230); the first control valve (610) and the second control valve (630) are respectively disposed on the air supply pipelines connected to the first air supply port (103) and the second air supply port (104); the first pressure sensor (710) is used to obtain the first pressure value of the first combustion zone (210) in the reaction chamber (100); the reaction chamber (100) also includes a third combustion zone (250) located between the first combustion zone (210) and the second combustion zone (230); the reaction chamber (100) is also provided with a third combustion zone (250) corresponding to the first combustion zone (210) and the second combustion zone (230). The third air inlet (105) of the three combustion zones (250) is used to supply compressed air to the third combustion zone (250); the combustion system (10) further includes a third control valve (650) and a third pressure sensor (750), the third control valve (650) being disposed on an air supply pipeline connected to the third air inlet (105), and the third pressure sensor (750) being used to acquire a second pressure value of the third combustion zone (250) within the reaction chamber (100); the method is characterized in that: the method includes: controlling the exhaust air when exhaust gas is introduced into the reaction chamber (100). The machine (500), the first control valve (610), the second control valve (630), and the third control valve (650) are opened; the first pressure value and the second pressure value in the reaction chamber (100) are obtained; if the difference between the first pressure value and the first preset pressure value is greater than the first preset range, the opening degree of the first control valve (610) is reduced to the first preset opening degree; if the difference between the second pressure value and the second preset pressure value is greater than the second preset range, the opening degree of the third control valve (650) is reduced to the second preset opening degree; wherein, the value of the first preset opening degree is less than the value of the second preset opening degree.

2. The waste gas combustion control method according to claim 1, characterized in that, The time it takes for the first control valve (610) to adjust from fully open to the first preset opening degree is the first preset time, and the time it takes for the third control valve (650) to adjust from fully open to the second preset opening degree is the second preset time. The first preset time is less than the second preset time.

3. The waste gas combustion control method according to claim 1, characterized in that, After the step of controlling the opening of the first control valve (610) to be reduced if the difference between the first pressure value and the first preset pressure value is greater than the first preset range, the method further includes: controlling the frequency of the exhaust fan (500) to be reduced.

4. The waste gas combustion control method according to claim 1, characterized in that, The third combustion zone (250) includes multiple sub-combustion zones arranged sequentially along the exhaust gas flow direction; the reaction chamber (100) is also provided with multiple sub-air supply ports, which are used to supply compressed air to the multiple sub-combustion zones respectively; the combustion system (10) also includes multiple regulating valves, which are used to regulate the amount of compressed air supplied to the multiple sub-combustion zones through the multiple sub-air supply ports respectively.

5. The waste gas combustion control method according to claim 1, characterized in that, The combustion system (10) further includes a partition plate (300) located within the reaction chamber (100); wherein the inlet (101) and the outlet (102) are respectively located on both sides of the partition plate (300), and the partition plate (300) and the inner wall of the reaction chamber (100) cooperate to form a U-shaped channel for guiding exhaust gas; the bottom wall of the reaction chamber (100) is provided with the inlet (101) and the outlet (102), and there is a gap between the top wall of the reaction chamber (100) and the partition plate (300); the first combustion zone (210) and the second combustion zone (230) are respectively located on both sides of the partition plate (300), and the third combustion zone (250) is at least partially located at the gap.

6. An exhaust gas combustion control device for implementing the exhaust gas combustion control method as described in any one of claims 1 to 5, characterized in that, The control device includes: an acquisition module (31) for acquiring the first pressure value in the reaction chamber (100); a first control module (33) for controlling the opening of the exhaust fan (500), the first control valve (610), and the second control valve (630); and a second control module (35) for controlling the opening of the first control valve (610) to be reduced if the difference between the first pressure value and the first preset pressure value is greater than the first preset range.

7. The waste gas combustion control device according to claim 6, characterized in that, The acquisition module (31) is also used to acquire the second pressure value in the reaction chamber (100); the first control module (33) is also used to control the opening of the third control valve (650); the second control module (35) is also used to control the opening of the third control valve (650) to be reduced if the difference between the second pressure value and the second preset pressure value is greater than the second preset range.

8. An electronic device, characterized in that, include: The processor (23), the memory (21), and the computer program stored in the memory (21) and executable on the processor (23); when the processor (23) executes the program, it implements the steps of the exhaust gas combustion control method as described in any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, characterized in that, when the computer program is executed, it implements the steps of the exhaust gas combustion control method as described in any one of claims 1 to 5.

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