Combustion system, waste gas combustion control method and device, electronic equipment and computer readable storage medium

Abstract

The invention provides a combustion system, a waste gas combustion control method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of waste 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 internally comprises a first combustion area located on the inlet side and a second combustion area located on the outlet side. Correspondingly, the reaction chamber is further provided with a first air supplementing opening and a second air supplementing opening, compressed air is introduced into the first combustion area and the second combustion area through the first air supplementing opening and the second air supplementing opening respectively, so that the compressed air reacts with the waste gas in sequence, and staged combustion is achieved. In order to conveniently control the air flow of the introduced compressed air and maintain the pressure of the inner cavity of the reaction chamber to be in a stable state all the time, the first control valve and the second control valve are arranged on an air supply pipeline communicated with the first air supply port and the second air supply port respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a combustion system, a waste gas combustion control method, a device, an electronic device and a computer-readable storage medium. Background Art

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

[0003] However, the inventors have found that during the combustion process, the combustible components in the exhaust gas react violently at high temperatures, causing the pressure in the furnace to rise sharply. This pressure increase phenomenon not only affects the combustion efficiency, but may also cause equipment damage and even cause explosion accidents. Summary of the invention

[0004] The purpose of the present invention includes providing a combustion system, an exhaust gas combustion control method, an apparatus, an electronic device and a computer-readable storage medium to ensure that the exhaust gas can be fully burned 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 is provided with an inlet for introducing exhaust gas and an outlet for discharging exhaust gas, and the exhaust fan is arranged close to the outlet of the reaction chamber. On the basis of the above, from the inlet to the outlet, the reaction chamber includes a first combustion area located on the inlet side and a second combustion area located on the outlet side. Correspondingly, the reaction chamber is also provided with a first air supply port and a second air supply port, through which compressed air is introduced into the first combustion area and the second combustion area respectively, so as to react with the exhaust gas in sequence to achieve staged combustion. In order to facilitate the control of the amount of compressed air introduced and maintain the inner cavity pressure of the reaction chamber in a stable state at all times, the first control valve and the second control valve are respectively arranged on the air supply pipeline connected to the first air supply port and the second air supply port. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0007] Figure 1 The structure of the combustion system provided in this embodiment is shown in FIG. Figure 1 ;

[0008] Figure 2 The structure of the combustion system provided in this embodiment is shown in FIG. Figure 2 ;

[0009] Figure 3 The structure of the combustion system provided in this embodiment is shown in FIG. Figure 3 ;

[0010] Figure 4 The structure of the combustion system provided in this embodiment is shown in FIG. Figure 4 ;

[0011] Figure 5 The embodiment provided Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle;

[0012] Figure 6 The structure of the combustion system provided in this embodiment is shown in FIG. Figure 5 ;

[0013] Figure 7 The embodiment provided Figure 7 Schematic diagram of the cross-sectional structure at BB in the middle;

[0014] Figure 8 The embodiment provided Figure 8 Another cross-sectional structural diagram at BB in the middle;

[0015] Fig. 9 A schematic flow chart of the exhaust gas combustion control method provided in this embodiment;

[0016] Fig.10 A schematic block diagram of the structure of the exhaust gas combustion control device provided in this embodiment;

[0017] Fig.11 This is a schematic 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-waste 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 tube; 111-third water port; 113-fourth water port; 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 area; 230-second combustion area; 250-third combustion area; 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 DESCRIPTION

[0019] In the related art, the waste gas purification scheme of decomposing harmful gases into harmless substances through combustion has the problem of violent reaction, rapid increase of pressure in the furnace, and causing explosion accidents.

[0020] In response to the above problems, the present invention provides a combustion system, an exhaust gas combustion control method, an apparatus, an electronic device 20 and a storage medium, which adopts a staged combustion scheme to maintain the pressure in the inner cavity of the reaction chamber 100 in a stable state at all times, thereby ensuring that the exhaust gas can be stably burned.

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0026] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0027] Figure 1 The structure of the combustion system 10 provided in this embodiment is schematically shown in FIG. Figure 1 , Figure 1 The arrow in the figure shows the direction of exhaust gas flow. Figure 1 The present invention provides a combustion system 10, which is applied to the field of waste gas treatment technology, and 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] Among them, the reaction chamber 100 is provided with an inlet 101 for introducing exhaust gas and an outlet 102 for discharging exhaust gas, and the exhaust fan 500 is arranged close to the outlet 102 of the reaction chamber 100. In actual application scenarios, the exhaust fan 500 can reduce the indoor air pressure and form a negative pressure zone by discharging the gas in the reaction chamber 100. Based on the setting of the above-mentioned pressure difference, the exhaust gas outside the reaction chamber 100 can be caused to flow into the reaction chamber 100 through the inlet 101, and be discharged from the outlet 102 after combustion treatment in the reaction chamber. In addition, it should be supplemented that, in the embodiments provided by the present invention, the exhaust gas introduced can be a large flow of hydrogen, or other highly flammable and explosive gases.

[0029] On the basis of the above, from the inlet 101 to the outlet 102, the reaction chamber 100 includes a first combustion area 210 located on the side of the inlet 101 and a second combustion area 230 located on the side of the outlet 102. Accordingly, the reaction chamber 100 is also provided with a first air supply port 103 and a second air supply port 104, which are respectively provided corresponding to the first combustion area 210 and the second combustion area 230. Based on this, compressed air is introduced into the first combustion area 210 and the second combustion area 230 through the first air supply port 103 and the second air supply port 104, respectively, so as to react with the exhaust gas in sequence to achieve staged combustion.

[0030] In order to facilitate the control of the amount of compressed air introduced and maintain the inner cavity pressure of the reaction chamber 100 in a stable state, the first control valve 610 and the second control valve 630 are respectively arranged on the air supply pipeline connected to the first air supply port 103 and the second air supply port 104. In addition, since the first combustion area 210 is arranged adjacent to the inlet 101 and is in an environment of high temperature and high concentration of exhaust gas, the reaction between the compressed air introduced and the exhaust gas is the main reaction, and the pressure fluctuation changes significantly. Therefore, the first pressure sensor 710 is arranged in the first combustion area 210 to obtain the first pressure value of the first combustion area 210 in the reaction chamber 100.

[0031] In actual scenarios, based on the staged combustion of the first combustion area 210 and the second combustion area 230, the first combustion area 210 is considered to be the main reaction. If the first pressure value shows that the first combustion area 210 may have a risk of explosion, the staff can reduce the opening of the first control valve 610, reduce the amount of compressed air added, reduce the amount of waste gas reaction, and reduce the pressure of the reaction chamber 100. If the first pressure value shows that the first combustion area 210 is in a stable state and there is no risk of explosion of waste gas, compressed air can continue to be introduced based on the existing opening of the first control valve 610.

[0032] In addition, since the second control valve 630 is disposed adjacent to the outlet 102, the second control valve 630 is generally in a normally open state, and oxygen-rich gas is kept flowing in, so as to achieve the purpose of completely treating the exhaust gas and diluting the exhaust gas to below the limit value. Accordingly, a second pressure sensor 730 may also be disposed at the outlet 102 of the reaction chamber 100, i.e., the second combustion area 230, so as to obtain the pressure change in the second combustion area 230 in real time, and ensure that the combustion process or dilution process at the outlet 102 is carried out normally.

[0033] Please refer again Figure 1 In order to further realize staged combustion, the reaction chamber 100 further includes a third combustion zone 250 located between the first combustion zone 210 and the second combustion zone 230. In addition, the reaction chamber 100 is further provided with a third air supply port 105 corresponding to the third combustion zone 250. The third air supply port 105 is similar to the air supply port in the aforementioned embodiment and is also used to introduce compressed air into the third combustion zone 250. Accordingly, the combustion system 10 further includes a third control valve 650, which is arranged on the air supply pipeline connected to the third air supply port 105, so as to control the amount of compressed air introduced into the third combustion zone 250.

[0034] It should be noted 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 the intensity of the reaction in the first combustion zone 210, and stronger than the intensity of the reaction in the second combustion zone 230. The pressure fluctuation is relatively significant, and there is also a risk of explosion. Based on this, the combustion system 10 also includes a third pressure sensor 750, which is used to obtain the second pressure value of the third combustion zone 250 in 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 realizes local small-scale combustion, local small-scale combustion and complete treatment and dilution to below the limit value.

[0035] Based on the above, the addition of the third air supply port 105 and the third control valve 650 further controls the mixing ratio and combustion speed of the exhaust gas and compressed air, reduces the pressure and temperature at a single air supply port (the first air supply port 103 / the second air supply port 104), reduces the risk of explosion in the reaction chamber 100, and realizes staged combustion. In other embodiments, in order to facilitate safer, more efficient and more environmentally friendly staged combustion, the third combustion area 250 may also include a plurality of sub-combustion areas arranged in sequence along the exhaust gas flow direction; accordingly, the reaction chamber 100 may also be provided with a plurality of sub-air supply ports, respectively used to introduce compressed air into the plurality of sub-combustion areas; accordingly, the combustion system 10 may also include a plurality of regulating valves, respectively used to adjust the amount of compressed air introduced into the plurality of sub-combustion areas through the plurality of sub-air supply ports. Optionally, any control valve before the second control valve 630 is a control valve with adjustable opening.

[0036] See also Figures 2 to 8 The present invention also provides another embodiment of a combustion system 10, which is Figure 2 The difference between the provided embodiments is that the combustion system 10 further includes a partition plate 300 located in the reaction chamber 100. In this embodiment, the inlet 101 and the outlet 102 are respectively located on both sides of the partition plate 300, and the corresponding first air supply port 103 and the second air supply port 104 are also respectively located on both sides of the partition plate 300. In addition, 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 then is discharged from the outlet 102. In this process, the circuitous air flow path increases the residence time of the exhaust gas in the reaction chamber 100, so that the reaction proceeds more fully and the exhaust gas treatment efficiency is higher. Similar to the above, the compressed air introduced into the first air supply port 103 and the second air supply port 104 still reacts with the exhaust gas in sequence to achieve staged combustion.

[0037] like Figure 4 and Figure 5 As shown, in order to further increase the flow path and residence time of the exhaust gas in the reaction chamber 100, the U-shaped channel is inverted, that is, the bottom wall of the reaction chamber 100 is provided with 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 of the bottom wall, climbs from bottom to top on one side of the partition plate 300, and after reaching the top wall, it passes through the gap between the partition plate 300 and the top wall to the other side of the partition plate 300, and then is discharged from top to bottom. It is easy to understand that in this embodiment, the first combustion area 210 and the second combustion area 230 are respectively located on both sides of the partition plate 300, and the third combustion area 250 is at least partially located at the gap.

[0038] As mentioned above, the first combustion area 210 and the third combustion area 250 are the main reaction area and the secondary reaction area, respectively. To improve the uniformity of the exhaust gas reaction and avoid local overreaction, the number of the first gas replenishment ports 103 is multiple, and the multiple first gas replenishment ports 103 are arranged at intervals along the circumference of the reaction chamber 100. Correspondingly, the number of the third gas replenishment ports 105 is also multiple, and the multiple third gas replenishment ports 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 gas supply ports 105, they can be arranged at equal intervals along the circumference of the entire reaction chamber 100, so as to evenly act on the exhaust gas flowing through the intervals; when there are multiple first gas supply ports 103, they can be arranged at equal intervals along one side of the inlet 101 of the reaction chamber 100, so as to evenly act on the exhaust gas passing through the inlet 101. In addition, in order to further improve the oxygen enrichment level in the second region, as Figure 5 As shown, the fourth air supply port 106 may be correspondingly and equidistantly arranged on one side of the outlet 102 of the reaction chamber 100. Optionally, the first air supply port 103 and the fourth air supply port 106 are connected and disconnected with compressed air through the same control valve.

[0040] Considering the huge amount of heat released when the exhaust gas reacts, please refer to Figure 4 The reaction chamber 100 includes an inner tube 110 and an outer tube 130. The inner cavity of the inner tube 110 is a combustion chamber, which is used to pass exhaust gas and compressed air for combustion reaction. The outer tube 130 and the inner tube 110 together form a double-layer structure, and a first water-cooling chamber 120 is formed between the inner wall of the outer tube 130 and the outer wall of the inner tube 110. It is easy to understand that the cooling water in the first water-cooling chamber 120 can effectively absorb the high temperature heat generated by the combustion chamber to ensure that the temperature of the reaction chamber 100 is controllable.

[0041] In some embodiments, in order to facilitate the recycling of the high temperature heat, the cooling water in the first water cooling chamber 120 may be circulating water, such as Figure 3As shown, the outer cylinder 130 is provided with a first water inlet 131 and a second water inlet 133 at intervals along the vertical direction. It is easy to understand that cooling water is introduced into the first water cooling chamber 120 through one of the first water inlet 131 and the second water inlet 133, and the cooling water in the first water cooling chamber 120 is discharged through the other of the first water inlet 131 and the second water inlet 133.

[0042] For example, in Figure 3 In the case where the first water inlet 131 is located below the second water inlet 133, the circulating water flows from bottom to top after entering the first water cooling chamber 120 through the first water inlet 131, so as to ensure that the circulating water can fully contact and absorb the heat released by the inner wall of the combustion chamber, thereby achieving the maximum heat exchange efficiency. In addition, it is also necessary to explain that when the water source is a circulating water tank, the first water inlet 131 and the second water inlet 133 are both connected to the water source; when the water source is PCW, one of the first water inlet 131 and the second water inlet 133 is connected to the water source, and the other is connected to the heat supply pipeline, so as to be used as a heat source to supply other processes, thereby improving energy utilization.

[0043] Accordingly, see Figures 6 to 8 In order to prevent the partition plate 300 from being burned by high temperature, the partition plate 300 is a hollow structure, and the inner cavity of the partition plate 300 is the 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, thereby extending the service life of the partition plate 300.

[0044] In addition, in some embodiments, Figure 7 As shown, the connection between the inner cylinder 110 and the partition plate 300 is provided with a third water inlet 111 and a fourth water inlet 113 at intervals along the vertical direction. In addition, the second water cooling chamber 310 is connected to the first water cooling chamber 120 through the third water inlet 111 and the fourth water inlet 113. Based on this, the first water cooling chamber 120 and the second water cooling chamber 310 are circulated and connected together, forming a multi-level cooling system, improving the overall thermal management efficiency, and ensuring that the temperature distribution of each part inside the reaction chamber 100 is more uniform.

[0045] In some embodiments, such as Figure 8As shown, the reaction chamber 100 is provided with a first channel 151 and a second channel 153 that penetrate the outer tube 130 and the inner tube 110 and communicate with the second water-cooling chamber 310. Based on this, the second water-cooling chamber 310 is similar to the first water-cooling chamber 120, and can be directly connected to the heat supply pipeline through the first channel 151 or the second channel 153, so that the seat heat source is supplied to other processes to improve energy utilization. In order 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 at intervals along the vertical direction, and cooling water is introduced into the second water-cooling chamber 310 through one of the first channel 151 and the second channel 153, and the cooling water in the second water-cooling chamber 310 is discharged through the other of the first channel 151 and the second channel 153.

[0046] In order to further avoid the occurrence of explosion accidents, the combustion system 10 also includes a pressure relief pipe 400 connected to the inner cavity of the reaction chamber 100. A one-way pressure relief device with pressure control is designed in the pressure relief pipe 400 as a protective measure to release the high pressure caused by the high-energy deflagration in the reaction chamber 100 into the atmosphere. Specifically, a fourth pressure sensor, a pressure relief diaphragm and a limit switch are arranged in the pressure relief pipe 400. The fourth pressure sensor is used to obtain the instantaneous pressure fluctuation in the pressure relief pipe 400. The limit switch is connected to the fourth pressure sensor in communication and is used to open or close the pressure relief diaphragm to open and close the inner cavity of the reaction chamber 100 and the external environment.

[0047] In actual application, when the fourth pressure sensor detects that the instantaneous pressure fluctuation in the pressure relief pipe 400 is greater than the set value, it is determined that the instantaneous pressure fluctuation in the reaction chamber 100 is too large. At this time, the fourth pressure sensor transmits a signal to the limit switch, triggering the limit switch to release the limit effect on the pressure relief diaphragm, so that the pressure relief diaphragm is opened, so that the high pressure caused by the high-energy deflagration is directly released into the atmosphere. Optionally, the pressure relief diaphragm is an aluminum diaphragm.

[0048] See also Fig. 9 The embodiment of the present invention further provides a waste gas combustion control method, which is applied to the combustion system 10 of the above embodiment. The waste gas combustion control method may include the following steps:

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

[0050] Before step S100 , the waste gas may be introduced into a pre-water washing device to treat water-soluble gas or dust, and then introduced 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 can realize the continuous introduction of compressed air, ensuring that there is a continuous flow of compressed air to react with the waste gas during the process of the waste gas passing through the reaction chamber 100, thereby ensuring that the waste gas can be fully burned and efficiently purified. The exhaust fan 500 is used to drive the waste gas into the reaction chamber 100 for combustion and decomposition, and flows in the direction from the inlet 101 to the outlet 102, and finally discharged from the reaction chamber 100.

[0052] Step S200 , obtaining a first pressure value in the reaction chamber 100 .

[0053] In step S200, the first pressure value is based on the measurement value of the first pressure sensor 710, and the first pressure sensor 710 is located in the first combustion zone 210. Considering that the pressure fluctuation at the inlet 101 of the reaction chamber 100 changes significantly, optionally, the first pressure sensor 710 is located on a side of the first combustion zone 210 close to the inlet 101.

[0054] 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 of the first control valve 610 is controlled to be reduced.

[0055] In step S300, by judging 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 in 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 means that the pressure of the reaction chamber 100 is in an unstable state at this time, 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, the amount of compressed air added is reduced, and the reaction amount of the exhaust gas is reduced, that is, oxygen-deficient combustion is achieved, thereby achieving the beneficial effect of reducing the pressure of the reaction chamber 100, maintaining the pressure in the reaction chamber 100 stable, 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 means that the pressure of the reaction chamber 100 is in a stable state at this time, there is no risk of combustion and explosion of the exhaust gas, and 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 first pressure value feedback in the reaction chamber 100, the valve opening can be adjusted using a PID (proportional-integral-differential) control algorithm. Optionally, the preset range can be set according to 10% of the first preset pressure value.

[0058] Based on the above, taking the first preset pressure value as P as an example, when exhaust gas is introduced into the reaction chamber 100, compressed air is introduced into the first combustion area 210 through the first control valve 610 to give priority to treating a small amount of local exhaust gas. At this time, the pressure value in the first combustion area 210 is allowed to fluctuate within a range less than or equal to P+10%P. If the first pressure sensor 710 detects that the first pressure value is greater than the range of P+10%P, it means that the pressure fluctuation in the first combustion area 210 has increased. At this time, the opening of the first control valve 610 is reduced, the amount of compressed air added is reduced, the reaction amount of exhaust gas is reduced, the pressure of the reaction chamber 100 is reduced, the pressure in the reaction chamber 100 is maintained stable, and the risk of combustion and explosion is prevented.

[0059] Please refer again Fig. 9 , the exhaust gas combustion control method provided in this application also includes:

[0060] Step S400, obtaining a second pressure value in the reaction chamber 100;

[0061] In step S400, the second pressure value is based on the measurement value of the third pressure sensor 750, and the third pressure sensor 750 is located in the third combustion zone 250. Considering that the pressure fluctuation at the first combustion zone 210 changes significantly, optionally, the third pressure sensor 750 is located on a side of the third combustion zone 250 close to the first combustion zone 210.

[0062] 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 controlled to be reduced.

[0063] In step S500, similar to the above, by judging 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 area 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 means that the pressure in the third combustion area 250 is in an unstable state at this time, and there is a risk of combustion and explosion of the exhaust gas. Based on this, reducing the opening of the third control valve 650 helps to reduce the amount of compressed air added here and reduce the reaction amount of the exhaust gas here, thereby achieving the beneficial effect of reducing the pressure of the third combustion area 250, maintaining the pressure in the third combustion area 250 stable, and preventing the risk of combustion and 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 means that the pressure of the third combustion zone 250 is in a stable state at this time, and there is no risk of combustion and explosion of the exhaust gas, and compressed air can continue to be introduced based on the existing opening of the third control valve 650.

[0065] In addition, it should be noted that the execution order of the above steps S200 to S300 and the above 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 (concurrently), and do not necessarily have to follow a strict order.

[0066] It should be noted that, similar to the above, based on the mechanism of adjusting the opening of the third control valve 650 according to the feedback of the second pressure value in the reaction chamber 100, the PID control algorithm can also be used to adjust the opening of the third control valve 650. In addition, it should be noted that in the embodiment with more than three control valves, any control valve before the second control valve 630 is a control valve with adjustable opening, and the opening of the control valve is adjusted based on the control algorithm such as the PID control algorithm through the pressure feedback mechanism to control the supply of compressed air to maintain the internal pressure of the reaction chamber 100 Stable, avoid deflagration. As for the second control valve 630 located at the outlet 102, it is ensured that it is in a normally open state, and oxygen-rich air is kept flowing in, so that the exhaust gas is fully burned.

[0067] Furthermore, the step of controlling and reducing the opening of the first control valve 610 is specifically: controlling and reducing the opening of the first control valve 610 to a first preset opening. It is easy to understand that the setting of the first preset opening can ensure that the first control valve 610 can always provide compressed air to the first combustion area 210 while reducing the possibility of explosion in the first combustion area 210.

[0068] Accordingly, the step of controlling and reducing the opening of the second control valve 630 is specifically as follows: controlling and reducing the opening of the third control valve 650 to a second preset opening. Similar to the above, the setting of the second preset opening can ensure that the third control valve 650 can always provide compressed air to the third combustion area 250 while reducing the possibility of explosion in the third combustion area 250.

[0069] On the basis of the above, the value of the first preset opening is smaller than the value of the second preset opening. Based on the above settings, in the first combustion area 210, the flow rate of the compressed air controlled by the first control valve 610 is relatively low, and the amount of waste gas reacted is relatively small. Therefore, even if the pressure fluctuation in the first combustion area 210 changes most significantly, adjusting the opening of the first control valve 610 according to pressure feedback can make the first pressure value relatively stable to prevent the risk of combustion and explosion; and in the third combustion area 250, the flow rate of the compressed air controlled by the third control valve 650 is relatively large, and the amount of waste gas reacted is relatively large. Similarly, even if the pressure fluctuation in the third combustion area 250 changes relatively significantly, adjusting the opening of the third control valve 650 according to pressure feedback can make the second pressure value relatively stable to prevent the risk of combustion and explosion.

[0070] In order to further ensure the safety of the reaction chamber 100, the time for the first control valve 610 to be adjusted from fully open to the first preset opening is defined as the first preset time, and the time for the third control valve 650 to be adjusted from fully open to the second preset opening is defined as the second preset time. On this basis, the first preset time is made shorter than the second preset time.

[0071] It is easy to understand that, according to the comparison between the first preset time and the second preset time, the first control valve 610 is more sensitive, can respond to the adjustment of the opening more quickly, and can more accurately replenish the compressed air, so as to better adapt to the first combustion area 210 with high temperature and high concentration of exhaust gas. For example, the first preset time may be 100ms, and the second preset time may be 150ms.

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

[0073] Step S600, controlling and adjusting the frequency of the exhaust fan 500 to decrease.

[0074] In step S600, it is easy to understand that the exhaust volume can be reduced by reducing the frequency of the exhaust fan 500. 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 a preset range, which is convenient for the introduction of exhaust gas and compressed air.

[0075] For example, when the opening of the first control valve 610 and the third control valve 650 is increased, the gas flow rate in the reaction chamber 100 increases, and the pressure increases. At this time, the frequency of the exhaust fan 500 is also increased accordingly to ensure that the purified waste gas is discharged in time. When the opening of the first control valve 610 and the third control valve 650 is reduced, the gas flow rate in the reaction chamber 100 decreases, the pressure decreases, and the frequency of the exhaust fan 500 is also reduced accordingly to maintain the negative pressure area in the reaction chamber 100 and ensure that the compressed air is replenished in time.

[0076] Optionally, the specific step of controlling and adjusting the frequency of the exhaust fan 500 is: controlling and adjusting the frequency of the exhaust fan 500 to be a preset frequency, wherein the preset frequency corresponds to the first preset opening mentioned above.

[0077] Based on the above, before step S600, the opening adjustment instruction of the first control valve 610 can be obtained, and this can be used as negative feedback to adjust the air volume. Based on the above feedback adjustment mechanism, the exhaust fan 500 can also use the 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 air volume of the exhaust fan 500, thereby ensuring that the negative pressure value in the reaction chamber 100 is within a preset range.

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

[0079] In addition, it should be noted that during the process from step S100 to step S600, that is, during the process of flowing through the high temperature reaction chamber 100, the exhaust gas is sequentially combusted with the compressed air input from the first air supply port 103, the second air supply port 104, and the third air supply port 105 to achieve purification. After step S600, the purified exhaust gas can enter a water tank or a washing tower for cooling and then be discharged, which is not limited here.

[0080] See also Fig.10 In order to execute the possible steps of the exhaust gas combustion control method provided in the above embodiments, the embodiment of the present invention provides an exhaust gas combustion control device 30, which is applied to the combustion system 10 in the above embodiments to execute the above exhaust gas combustion control method. It should be noted that the exhaust gas combustion control device 30 provided in the embodiment of the present invention has basically the same basic principle and technical effects as the above embodiments. For the sake of brief description, for the parts not mentioned in this embodiment, please refer to the corresponding contents 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 in the reaction chamber 100. Optionally, the acquisition module 31 can be used to execute step S100 in the above control method to achieve corresponding technical effects.

[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 be specifically used to execute step S200 in the above control method to achieve corresponding technical effects.

[0084] The second control module 35 is used to control 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. Optionally, the second control module 35 can be used to execute step S300 in the above control method to achieve the corresponding technical effect.

[0085] Further, the acquisition module 31 is also used to obtain the second pressure value in 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 third control valve 650 to open. Applied in actual scenarios, the first control module 33 is used to control the third control valve 650 to open while controlling the exhaust fan 500, the first control valve 610, and the second control valve 630 to open. Correspondingly, the second control module 35 is also used to control the opening 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 module is also used to execute step S500 in the above control method to achieve the corresponding technical effect.

[0086] Also, see Fig.11 , Fig.11 This is a schematic block diagram of the structure of the electronic device 20 provided in this embodiment. The present invention further provides an electronic device 20 , which may further include a memory 21 and one or more processors 23 .

[0087] The memory 21 and the processor 23 are electrically connected to each other directly or indirectly to achieve data transmission or interaction. For example, these elements can be electrically connected to each other through 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 in the form of software or firmware or solidified in the operating system (OS) of the server. The processor 23 is used to execute executable modules stored in the memory 21, such as 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, a random access memory 21 (RAM), a read only memory 21 (ROM), a programmable read-only memory 21 (PROM), an erasable programmable read-only memory 21 (EPROM), an electric erasable programmable read-only memory 21 (EEPROM), etc. The memory 21 is used to store computer program codes, and the computer program codes include 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 further provide a computer-readable storage medium, which stores a computer program. When the computer program is executed by the processor 23, the air conditioner control method provided by any of the above embodiments is implemented.

[0090] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and a part of the module, program segment or code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

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

[0092] If the function is implemented in the form of a software function 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 the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory 21 (ROM, Read-Only Memory), random access memory 21 (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0093] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A combustion system, characterized in that: The combustion system (10) comprises 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 waste gas and an outlet (102) for discharging waste gas, and the exhaust fan (500) is arranged close to the outlet (102); From the inlet (101) to the outlet (102), the reaction chamber (100) includes a first combustion area (210) located on the inlet (101) side and a second combustion area (230) located on the outlet (102) side; the reaction chamber (100) is also provided with a first air supply port (103) and a second air supply port (104); compressed air is introduced into the first combustion area (210) and the second combustion area (230) respectively through the first air supply port (103) and the second air supply port (104); The first control valve (610) and the second control valve (630) are respectively arranged on an air supply pipeline connected to the first air supply port (103) and the second air supply port (104); The first pressure sensor (710) is used to obtain a first pressure value of the first combustion zone (210) in the reaction chamber (100).

2. The combustion system according to claim 1, characterized in that: The reaction chamber (100) further comprises a third combustion area (250) located between the first combustion area (210) and the second combustion area (230); the reaction chamber (100) is further provided with a third air supply port (105) corresponding to the third combustion area (250), and the third air supply port (105) is used to introduce the compressed air into the third combustion area (250); The combustion system (10) further comprises a third control valve (650) and a third pressure sensor (750); the third control valve (650) is arranged on a gas supply pipeline connected to the third gas supply port (105); and the third pressure sensor (750) is used to obtain a second pressure value of the third combustion area (250) in the reaction chamber (100).

3. The combustion system according to claim 2, characterized in that: The third combustion zone (250) includes a plurality of sub-combustion zones arranged in sequence along the exhaust gas flow direction; the reaction chamber (100) is also provided with a plurality of sub-air supply ports, respectively used to introduce the compressed air into the plurality of sub-combustion zones; the combustion system (10) also includes a plurality of regulating valves, respectively used to adjust the amount of compressed air introduced into the plurality of sub-combustion zones through the plurality of sub-air supply ports.

4. The combustion system according to claim 2, characterized in that: The combustion system (10) further comprises a partition plate (300) located in 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) cooperates with the inner wall of the reaction chamber (100) to form a U-shaped channel for guiding the 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 area (210) and the second combustion area (230) are respectively located on both sides of the partition plate (300), and the third combustion area (250) is at least partially located at the interval.

5. A method for controlling exhaust gas combustion applied to a combustion system as claimed in any one of claims 2 to 4, characterized in that: The method comprises: When exhaust gas is introduced into the reaction chamber (100), the exhaust fan (500), the first control valve (610), and the second control valve (630) are controlled to open; Acquiring the first pressure value in the reaction chamber (100); If the difference between the first pressure value and the first preset pressure value is greater than a first preset range, the opening of the first control valve (610) is controlled to be reduced.

6. The exhaust gas combustion control method according to claim 5, characterized in that: The method further comprises: While controlling the exhaust fan (500), the first control valve (610), and the second control valve (630) to open, the third control valve (650) is also controlled to open.

7. The exhaust gas combustion control method according to claim 6, characterized in that: The method further comprises: Acquiring the second pressure value in the reaction chamber (100); If the difference between the second pressure value and the second preset pressure value is greater than a second preset range, the opening of the third control valve (650) is controlled to be reduced.

8. The exhaust gas combustion control method according to claim 7, characterized in that: The step of controlling and reducing the opening of the first control valve (610) is specifically as follows: Controlling the first control valve (610) to reduce its opening to a first preset opening; The steps of controlling and reducing the opening of the third control valve (650) are specifically as follows: Controlling the opening of the third control valve (650) to decrease to a second preset opening; Wherein, the value of the first preset opening is smaller than the value of the second preset opening.

9. The exhaust gas combustion control method according to claim 8, characterized in that: The time taken for the first control valve (610) to be adjusted from fully open to the first preset opening is a first preset time, and the time taken for the third control valve (650) to be adjusted from fully open to the second preset opening is a second preset time, and the first preset time is less than the second preset time.

10. The exhaust gas combustion control method according to claim 6, characterized in that: After the step of controlling to reduce the opening of the first control valve (610) if the difference between the first pressure value and the first preset pressure value is greater than a first preset range, the method further comprises: The frequency of the exhaust fan (500) is controlled to be reduced.

11. An exhaust gas combustion control device applied to a combustion system as claimed in any one of claims 2 to 4, characterized in that: The control device comprises: An acquisition module (31), used for acquiring the first pressure value in the reaction chamber (100); A first control module (33) for controlling the exhaust fan (500), the first control valve (610), and the second control valve (630) to open; The second control module (35) is used to control 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 a first preset range.

12. The exhaust gas combustion control device according to claim 11, characterized in that: The acquisition module (31) is further used to acquire the second pressure value in the reaction chamber (100); The first control module (33) is further used to control the opening of the third control valve (650); The second control module (35) is further configured to control the opening of the third control valve (650) to decrease if the difference between the second pressure value and the second preset pressure value is greater than a second preset range.

13. An electronic device, characterized in that: include: A processor (23), a memory (21), and a computer program stored in the memory (21) and executable on the processor (23); when the processor (23) executes the program, the steps of the exhaust gas combustion control method as described in any one of claims 5 to 10 are implemented.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program implements the steps of the exhaust gas combustion control method according to any one of claims 5 to 10 when executed.

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