Method and system for monitoring and processing concentration of VOCs gas to be incinerated, terminal and medium

Abstract

The invention relates to a monitoring treatment method and system for the concentration of VOCs gas to be incinerated, a terminal and a medium, and belongs to the technical field of VOCs waste gas treatment.The monitoring treatment method comprises the steps that the first concentration value of combustible gas in the washed VOCs gas is obtained; judging whether the first concentration value is greater than a first preset value or not; if yes, a first alarm signal is sent, and an air distribution valve between an air distribution device and a VOCs gas pipeline is controlled to be opened, so that air is conveyed to be mixed with VOCs; acquiring a second concentration value of the combustible gas in the mixed gas; judging whether the second concentration value is in a reduced state or not; if not, whether the second concentration value reaches a second preset value or not is judged; and if yes, a communication valve between the VOCs gas pipeline and the incineration device is cut off. The combustion system has the beneficial effect that the concentration of combustible gas in the VOCs gas to enter the combustion system can be reduced in time.

Description

Technical Field

[0001] The present application relates to the technical field of VOCs waste gas treatment, and in particular to a method, system, terminal and medium for monitoring and treating the concentration of VOCs gas to be incinerated. Background Technique

[0002] In the related art, VOCs gas will enter the incineration system for incineration after washing; since there will be combustible gas in the VOCs gas after washing, if the concentration of combustible gas in the VOCs gas entering the incineration system is relatively high, there is a possibility of explosion. Summary of the Invention

[0003] In order to be able to timely reduce the concentration of combustible gas in the VOCs gas to be entered into the incineration system, the present application provides a method, system, terminal and medium for monitoring and treating the concentration of VOCs gas to be incinerated.

[0004] In the first aspect, the present application provides a method for monitoring and treating the concentration of VOCs gas to be incinerated, and adopts the following technical solution: A method for monitoring and treating the concentration of VOCs gas to be incinerated includes: Obtaining a first concentration value of combustible gas in the VOCs gas after washing; Judging whether the first concentration value is greater than a first preset value; If so, sending a first alarm signal and controlling the air distribution valve between the air distribution device and the VOCs gas pipeline to open to convey air to mix with the VOCs; Obtaining a second concentration value of combustible gas in the mixed gas; Judging whether the second concentration value is in a decreasing state; If not, judging whether the second concentration value reaches a second preset value; If the second concentration value reaches the second preset value, cutting off the connection valve between the VOCs gas pipeline and the incineration device.

[0005] By adopting the above technical solution, when the washed VOCs gas is transported to the incineration device, the first concentration value of the combustible gas in the VOCs gas is obtained, and it is judged whether the first concentration value is greater than the first preset value. If it is greater, it means that the concentration of the combustible gas exceeds the standard. Therefore, after sending the first alarm signal for reminder, the air distribution valve is controlled to open at the same time, so that the air distribution device transports air into the pipeline for transporting the VOCs gas for mixing, diluting the concentration of the combustible gas, so as to timely reduce the concentration of the combustible gas in the VOCs gas entering the incineration system; further obtain the second concentration value of the combustible gas in the mixed gas, and judge whether the second concentration value is in a decreasing state. If not, it means that the effect of air dilution is very small. Therefore, it is continued to judge whether the second concentration value reaches the second preset value. If so, the connecting valve needs to be cut off to prevent the VOCs gas from entering the incineration device again.

[0006] Optionally, after cutting off the connecting valve between the pipeline and the incineration device, it includes: Controlling the opening of the relief valve between the adsorption device and the VOCs gas pipeline, and discharging the mixed gas to the adsorption device for adsorption treatment.

[0007] By adopting the above technical solution, in order to avoid excessive pressure in the pipeline, after cutting off the connecting valve, the relief valve is timely opened, so that the mixed gas is discharged to the adsorption device for adsorption treatment, and the adsorbed mixed gas is discharged into the air, so as to reduce the pressure in the pipeline and meet the emission standards.

[0008] Optionally, before sending the first alarm signal and controlling the opening of the air distribution valve between the air distribution device and the VOCs gas pipeline, it includes: Judging whether the first concentration value is not less than the second preset value; If so, cut off the connecting valve between the VOCs gas pipeline and the incineration device, and control the opening of the relief valve; If not, send the first alarm signal and control the opening of the air distribution valve between the air distribution device and the VOCs gas pipeline.

[0009] By adopting the above technical solution, if the concentration of the combustible gas in the washed VOCs gas is greater than or equal to the second preset value, there is no need to introduce air for dilution, directly cut off the connecting valve, open the relief valve, and discharge the VOCs gas.

[0010] Optionally, the monitoring and processing method further includes: Determining the required air delivery volume according to the first concentration value; Determining the opening degree of the air distribution valve according to the required air delivery volume.

[0011] By adopting the above technical solution, accurate determination of the air delivery volume can avoid excessive or insufficient air supply, thereby reducing unnecessary energy consumption caused by excessive air supply. After determining the required air delivery volume, the opening of the air distribution valve is determined accordingly, which can achieve accurate control of the air flow entering the VOCs gas pipeline; by accurately adjusting the opening of the air distribution valve, the air delivery volume can be accurately controlled at the required level to ensure good mixing with the current concentration of VOCs gas.

[0012] Optionally, the step of determining the required air delivery volume according to the first concentration value includes: Obtain the gas flow rate of VOCs gas; The gas flow rate and the first concentration value are input into a pre-built air delivery model to obtain the required air delivery volume; the air delivery model is Among them, Q 需 is the required air delivery volume, C 当 is the first concentration value, η is the mixing efficiency, K is the expected value, C 1 is the first preset value, Q VOCs is the gas flow rate of VOCs.

[0013] Optionally, the step of determining the opening degree of the air distribution valve according to the required air delivery volume includes: The required air delivery volume is input into the pre-built valve opening model to obtain the opening degree of the air distribution valve; the valve opening model is Among them, x is the opening degree of the air distribution valve, Q max is the theoretical air delivery rate when x=100%.

[0014] Optionally, the monitoring and processing method further includes: After the second concentration value is in a decreasing state, determining whether the second concentration value is not greater than the first preset value within N seconds; If not, the connecting valve is cut off and a second alarm signal is sent; If so, close the air distribution valve.

[0015] By adopting the above technical solution, if the concentration of combustible gas in the VOCs gas does decrease after being diluted by air, it means that the dilution is effective; if the second concentration value is still greater than the first preset value within N seconds, it means that the concentration of combustible gas in the VOCs gas cannot be completely reduced, and it is possible that it will stabilize after decreasing, so it is necessary to cut off the connecting valve and send a second alarm signal for reminder.

[0016] In the second aspect, the present application provides a monitoring and processing system for the concentration of VOCs gas to be incinerated, which adopts the following technical solution: A monitoring and processing system for the concentration of VOCs gas to be incinerated, comprising: A data acquisition module for acquiring a first concentration value of combustible gas in the washed VOCs gas; A judgment module for judging whether the first concentration value is greater than a first preset value; A signal sending module for sending a first alarm signal after the first concentration value is greater than the first preset value; A control module for controlling the opening of the air distribution valve between the air distribution device and the VOCs gas pipeline to convey air for mixing with the VOCs; The data acquisition module is further configured to acquire a second concentration value of combustible gas in the mixed gas; the judgment module is configured to judge whether the second concentration value is in a decreasing state; if not, then further judge whether the second concentration value reaches a second preset value, and if so, the control module cuts off the connection valve between the VOCs gas pipeline and the incineration device.

[0017] By adopting the above technical solution, when the washed VOCs gas is conveyed to the incineration device, a first concentration value of combustible gas in the VOCs gas is acquired, and it is judged whether the first concentration value is greater than the first preset value. If it is greater, it means that the concentration of combustible gas exceeds the standard. Therefore, after sending a first alarm signal for reminder, the air distribution valve is controlled to open at the same time, so that the air distribution device conveys air into the pipeline for conveying the VOCs gas for mixing, diluting the concentration of the combustible gas, thereby being able to timely reduce the concentration of combustible gas in the VOCs gas entering the incineration system; further acquire the second concentration value of combustible gas in the mixed gas, and judge whether the second concentration value is in a decreasing state. If not, it means that the effect of air dilution is very small. Therefore, continue to judge whether the second concentration value reaches the second preset value. If so, it is necessary to cut off the connection valve to prevent the VOCs gas from entering the incineration device again.

[0018] In a third aspect, the present application provides a terminal, adopting the following technical solution: A terminal, comprising: A memory storing a monitoring and processing program for the concentration of VOCs gas to be incinerated; A processor for executing the program stored on the memory to implement the steps of the above-mentioned monitoring and processing method for the concentration of VOCs gas to be incinerated.

[0019] In a fourth aspect, the present application provides a computer-readable storage medium, adopting the following technical solution: A computer-readable storage medium storing a computer program capable of being loaded and executed by a processor to implement the above-mentioned monitoring and processing method for the concentration of VOCs gas to be incinerated.

[0020] In summary, the present application has at least the following beneficial effects: 1. The purpose of determining whether the first concentration value of the combustible gas in the VOCs gas after washing is greater than the first preset value and whether the second concentration value of the combustible gas in the mixed gas reaches the second preset value is that if the first concentration value is greater than the first preset value, it indicates that the concentration of the combustible gas exceeds the standard. Therefore, after sending the first alarm signal for reminder, the air distribution valve is controlled to open simultaneously, so that the air distribution device conveys air into the pipeline for transporting VOCs gas for mixing, diluting the concentration of the combustible gas, and thus the concentration of the combustible gas in the VOCs gas entering the incineration system can be reduced in time; further obtain the second concentration value of the combustible gas in the mixed gas, and judge whether the second concentration value is in a decreasing state. If not, it indicates that the effect of air dilution is very small. Therefore, continue to judge whether the second concentration value reaches the second preset value. If so, the connection valve needs to be cut off to prevent the VOCs gas from entering the incineration device again.

[0021] 2. The purpose of determining the required air delivery volume according to the first concentration value and determining the opening degree of the air distribution valve according to the required air delivery volume is that accurately determining the air delivery volume can avoid the situation of excessive or insufficient air supply, thereby reducing the phenomenon of unnecessary energy consumption caused by excessive air supply. After determining the required air delivery volume, then determine the opening degree of the air distribution valve accordingly, which can achieve precise control of the air flow rate entering the VOCs gas pipeline; by accurately adjusting the opening degree of the air distribution valve, the air delivery volume can be accurately controlled at the required level to ensure good mixing with the VOCs gas of the current concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the pipeline diagram of the processing pipeline of the present application; Figure 2 is the flowchart of the implementation manner of the first embodiment of the method of the present application; Figure 3 is the flowchart of another implementation manner of the method embodiment of the present application; Figure 4 is the structural block diagram of the system embodiment of the present application.

[0023] Description of the reference numerals: 101, VOCs gas pipeline; 102, air distribution pipeline; 103, exhaust pipeline; 104, combustible gas detector; 105, flowmeter; 106, air distribution valve; 107, connection valve; 108, air distribution device; 109, adsorption device; 110, relief valve; 201, data acquisition module; 202, judgment module; 203, signal sending module; 204, control module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will describe the technical solutions in the embodiments of the present invention in conjunction with the appended Figure 1 - appended Figure 4 , and describe the technical solutions in the embodiments of the present invention clearly and completely. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] The implementation of this application is based on a processing pipeline that is connected to the inlet of an incineration device and is used to monitor and process the combustible gas in the VOCs gas to be introduced after washing. Referring to Figure 1 , this processing pipeline includes a VOCs gas pipeline 101, an air distribution pipeline 102, an exhaust pipeline 103, a combustible gas detector 104, a flowmeter 105, an air distribution valve 106, a connection valve 107, an air distribution device 108, an adsorption device 109, and a vent valve 110.

[0026] Among them, the VOCs gas pipeline 101 is connected to the incineration device. The connection valve 107 is installed on the VOCs gas pipeline 101 and is arranged close to the incineration device for opening and closing the VOCs gas pipeline 101. One end of the air distribution pipeline 102 is connected to the air distribution device 108, and the other end is connected to the VOCs gas pipeline 101 and is arranged away from the incineration device. The air distribution valve 106 is installed on the air distribution pipeline 102 for opening and closing the air distribution pipeline 102 and adjusting the flow rate of the air distribution pipeline 102. One end of the exhaust pipeline 103 is connected to the VOCs gas pipeline 101, and the other end is connected to the adsorption device 109, and the exhaust pipeline 103 is arranged close to the connection valve 107. The vent valve 110 is installed on the exhaust pipeline 103 for opening and closing the exhaust pipeline 103. The combustible gas detector 104 and the flowmeter 105 are both installed on the VOCs gas pipeline 101. The combustible gas detector 104 is used to detect the concentration of combustible gas in the VOCs gas, and the flowmeter 105 is used to detect the flow rate of the VOCs gas. The adsorption device 109 and the air distribution device 108 are both conventional adsorption and air distribution structures and will not be described in detail.

[0027] When the combustible gas detector 104 detects that the concentration of combustible gas in the VOCs gas is greater than the first preset value and less than the second preset value, the air distribution valve 106 is opened, and the air distribution device 108 delivers air into the VOCs gas pipeline 101 to dilute the concentration of combustible gas in the VOCs gas; if the concentration of the mixed combustible gas is greater than the second preset value or the concentration of combustible gas in the VOCs gas is greater than the second preset value, the connection valve 107 is cut off, and the vent valve 110 is opened, so that the mixed gas or the VOCs gas is discharged to the adsorption device 109 and discharged after adsorption treatment.

[0028] The first embodiment of the present application discloses a method for monitoring and processing the concentration of VOCs gas to be incinerated. Referring to Figure 2 , as an implementation manner of the monitoring and processing method, the monitoring and processing method may include S110 - S200: S110, obtaining the first concentration value of combustible gas in the washed VOCs gas; S120, determining whether the first concentration value is greater than the first preset value; S130, if so, sending a first alarm signal and controlling the air distribution valve 106 between the air distribution device 108 and the VOCs gas pipeline 101 to open to convey air to mix with the VOCs gas; S140, if not, then not responding; S150, obtaining the second concentration value of combustible gas in the mixed gas; S160, determining whether the second concentration value is in a decreasing state; S170, if so, continuing to monitor the second concentration value; S180, if not, then determining whether the second concentration value reaches the second preset value; S190, if so, cutting off the connection valve 107 between the VOCs gas pipeline 101 and the incineration device; S200, if not, then continuing to convey air.

[0029] Specifically, the first preset value is the lower limit value of the explosion combustible gas concentration, and the second preset value is the upper limit value of the explosion combustible gas concentration.

[0030] Further, after cutting off the connection valve 107 between the pipeline and the incineration device, the air release valve 110 between the adsorption device 109 and the VOCs gas pipeline 101 can be controlled to open to discharge the mixed gas to the adsorption device 109 for adsorption treatment.

[0031] Further, after determining that the first concentration value is greater than the first preset value, it can be continuously determined whether the first concentration value is less than the second preset value. If so, a first alarm signal is sent and the air distribution valve 106 is controlled to open to convey air; if not, the connection valve 107 is directly cut off and the air release valve 110 is controlled to open.

[0032] As another implementation manner of the monitoring and processing method, referring to Figure 3 , when controlling the air distribution valve 106 to open, the monitoring and processing method further includes S310 - S320: S310, determining the required air conveyance amount according to the first concentration value; S320, determining the opening degree of the air distribution valve 106 according to the required air conveyance amount.

[0033] Specifically for S310, obtain the gas flow rate of the VOCs gas, and input the gas flow rate and the first concentration value into a pre-constructed air delivery model to obtain the required air delivery volume.

[0034] The air delivery model is where Q 需 is the required air delivery volume, C 当 is the first concentration value, η is the mixing efficiency, K is the expected value, C 1 is the first preset value, and Q VOCs is the gas flow rate of the VOCs. The mixing efficiency η and the expected value K can be obtained by solving the air delivery model with historical data or can be set by the management personnel.

[0035] Specifically for S320, input the required air delivery volume into a pre-constructed valve opening model to obtain the opening degree of the air distribution valve 106.

[0036] The valve opening model is where x is the opening degree of the air distribution valve 106, and Q max is the theoretical air delivery volume when x = 100%.

[0037] Example illustration: For example, the first concentration value C 当 of the combustible gas in the VOCs gas is 0.08 mol / mol, the first preset value C 1 is 0.04 mol / mol, the expected value K is 0.5, the gas flow rate of the VOCs gas is 1 m 3 / h, and the mixing efficiency η is 0.8.

[0038] Then

[0039] When the air distribution valve 106 designed by the system is fully open (x = 100%), the maximum air delivery volume Q max is 10 m 3 / h, then the opening degree

[0040] In another implementation manner of the monitoring and treatment method, the monitoring and treatment method may further include: In step S170, determine whether the second concentration value is not greater than the first preset value within N seconds. If so, just close the air distribution valve 106; if not, cut off the connection valve 107 and send a second alarm signal, and the information carried by the second alarm signal is different from that of the first alarm signal.

[0041] In addition, in step S200, it is determined whether the second concentration value reaches the second preset value within N seconds; if not, the connecting valve 107 is cut off, and a third alarm signal is sent; if so, the connecting valve 107 is cut off, and the relief valve 110 is controlled to open. The information carried by the third alarm signal is different from the information carried by the second alarm signal.

[0042] In addition, if the second concentration value does not reach the second preset value within N seconds, the air delivery volume can be increased, and then it is determined whether the second concentration value drops below the first preset value within 2N seconds; if not, the connecting valve 107 is cut off again, and a third alarm signal is sent. The way to increase the air delivery volume can be to gradually increase the air delivery volume as the duration increases, or to increase the air delivery volume according to a preset increase rule.

[0043] The implementation principle of this embodiment is as follows: Obtain the first concentration value of the combustible gas in the washed VOCs gas, and determine whether the first concentration value is greater than the first preset value. If so, send a first alarm signal, and control the air distribution valve 106 between the air distribution device 108 and the VOCs gas pipeline 101 to open to deliver air to mix with the VOCs; then obtain the second concentration value of the combustible gas in the mixed gas, and determine whether the second concentration value is in a decreasing state. If not, continue to monitor the second concentration value, and continuously determine whether the second concentration value reaches the second preset value. If so, cut off the connecting valve 107, and control the relief valve 110 to open to discharge the mixed gas to the adsorption device 109 for adsorption treatment.

[0044] Based on the above method embodiment, the second embodiment of the present application discloses a monitoring and treatment of the concentration of VOCs gas to be incinerated. Refer to Figure 4 As an implementation manner of the monitoring and treatment system, the monitoring and treatment system may include: A data acquisition module 201 for acquiring the first concentration value of the combustible gas in the washed VOCs gas; A judgment module 202 for judging whether the first concentration value is greater than the first preset value; A signal sending module 203 for sending a first alarm signal after the first concentration value is greater than the first preset value; A control module 204 for controlling the air distribution valve 106 between the air distribution device and the VOCs gas pipeline to open to deliver air to mix with the VOCs after the first concentration value is greater than the first preset value; The data acquisition module 201 is further configured to acquire a second concentration value of the combustible gas in the mixed gas; the judgment module 202 is configured to judge whether the second concentration value is in a decreasing state; if not, further judge whether the second concentration value reaches a second preset value, and if so, the control module 204 cuts off the connection valve 107 between the VOCs gas pipeline and the incineration device. In addition, the control module 204 is further configured to control the opening of the relief valve 110 between the adsorption device and the VOCs gas pipeline, and discharge the mixed gas to the adsorption device for adsorption treatment.

[0045] The module for monitoring and processing the concentration of the VOCs gas to be incinerated corresponds one-to-one with the method for monitoring and processing the concentration of the VOCs gas to be incinerated, and will not be elaborated here.

[0046] The third embodiment of the present application provides a terminal. As an implementation manner of the terminal, the terminal may include: a memory and a processor; wherein, The memory is used to store the above-mentioned program for monitoring and processing the concentration of the VOCs gas to be incinerated; The processor is configured to execute the program stored on the memory to implement the steps of the above-mentioned method for monitoring and processing the concentration of the VOCs gas to be incinerated.

[0047] Wherein, the memory may be communicatively connected to the processor through a communication bus, and the communication bus may be an address bus, a data bus, a control bus, etc.

[0048] In addition, the memory may include a random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0049] And the processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0050] The fourth embodiment of the present application provides a computer-readable storage medium, storing a computer program that can be loaded and executed by a processor to implement the above-mentioned method for monitoring and processing the concentration of the VOCs gas to be incinerated.

[0051] The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrating one or more available media. Among them, the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state drive), etc.

[0052] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application in turn. Any feature disclosed in this specification (including the abstract and drawings), unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

Claims

1. A method for monitoring and processing the concentration of VOCs gas to be incinerated, characterized in that: include: Obtaining a first concentration value of combustible gas in the scrubbed VOCs gas; Determining whether the first concentration value is greater than a first preset value; If so, a first alarm signal is sent, and the air distribution valve (106) between the air distribution device (108) and the VOCs gas pipeline (101) is controlled to open to deliver air mixed with VOCs; Obtaining a second concentration value of the combustible gas in the mixed gas; determining whether the second concentration value is in a decreasing state; If not, determining whether the second concentration value reaches a second preset value; If the second concentration value reaches the second preset value, the connecting valve (107) between the VOCs gas pipeline (101) and the incineration device is cut off.

2. A method for monitoring and processing the concentration of VOCs gas to be incinerated according to claim 1, characterized in that: After the connecting valve (107) between the pipeline and the incineration device is cut off, the method includes: The release valve (110) between the adsorption device (109) and the VOCs gas pipeline (101) is controlled to open, and the mixed gas is discharged to the adsorption device (109) for adsorption treatment.

3. The method for monitoring and processing the concentration of VOCs gas to be incinerated according to claim 2, characterized in that: Before sending the first alarm signal and controlling the air distribution valve (106) between the air distribution device (108) and the VOCs gas pipeline (101) to open, the method includes: Determining whether the first concentration value is not less than the second preset value; If yes, the connecting valve (107) between the VOCs gas pipeline (101) and the incineration device is cut off, and the release valve (110) is controlled to open; If not, a first alarm signal is sent, and the air distribution valve (106) between the air distribution device (108) and the VOCs gas pipeline (101) is controlled to open.

4. A method for monitoring and processing the concentration of VOCs gas to be incinerated according to claim 3, characterized in that: The monitoring and processing method also includes: Determining the required air delivery volume according to the first concentration value; The opening degree of the air distribution valve (106) is determined according to the required air delivery volume.

5. A method for monitoring and processing the concentration of VOCs gas to be incinerated according to claim 4, characterized in that: The step of determining the required air delivery volume according to the first concentration value comprises: Obtain the gas flow rate of VOCs gas; The gas flow rate and the first concentration value are input into a pre-built air delivery model to obtain the required air delivery volume; the air delivery model is Among them, Q 需 is the required air delivery volume, C 当 is the first concentration value, η is the mixing efficiency, K is the expected value, C1 is the first preset value, Q VOCs is the gas flow rate of VOCs.

6. A method for monitoring and processing the concentration of VOCs gas to be incinerated according to claim 5, characterized in that: The step of determining the opening degree of the air distribution valve according to the required air delivery volume comprises: Inputting the required air delivery volume into a pre-constructed valve opening model to obtain the opening degree of the air distribution valve (106); The valve opening model is Where x is the opening degree of the air distribution valve (106), Q max is the theoretical air delivery rate when x=100%.

7. The method for monitoring and processing the concentration of VOCs gas to be incinerated according to claim 1, characterized in that: The monitoring and processing method also includes: After the second concentration value is in a decreasing state, determining whether the second concentration value is not greater than the first preset value within N seconds; If not, the communication valve (107) is cut off and a second alarm signal is sent; If so, close the air distribution valve (106).

8. A monitoring and processing system for the concentration of VOCs gas to be incinerated, characterized in that: include: A data acquisition module (201) is used to acquire a first concentration value of combustible gas in the scrubbed VOCs gas; A judgment module (202), used for judging whether the first concentration value is greater than a first preset value; A signal sending module (203), configured to send a first alarm signal after the first concentration value is greater than the first preset value; A control module (204) is used to control the opening of an air distribution valve (106) between the air distribution device and the VOCs gas pipeline to deliver air mixed with VOCs; The data acquisition module (201) is also used to obtain a second concentration value of the combustible gas in the mixed gas; the judgment module (202) is used to judge whether the second concentration value is in a decreasing state; if not, further judge whether the second concentration value reaches a second preset value, and if so, the control module (204) cuts off the connecting valve (107) between the VOCs gas pipeline and the incineration device.

9. A terminal, characterized in that: include: A memory for storing a monitoring and processing program of the concentration of VOCs gas to be incinerated; A processor is used to execute the program stored in the memory to implement the steps of the method for monitoring and processing the concentration of VOCs gas to be incinerated as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute a method for monitoring and processing the concentration of VOCs gas to be incinerated as described in any one of claims 1-7.

Images