Intelligent control system, method and device for industrial kiln

Abstract

The invention discloses an intelligent control system, method and device for an industrial furnace. The intelligent control system comprises an air-fuel regulation and control unit, an intelligent ignition unit, a furnace temperature regulation and control unit, a tempering protection unit, a flameout protection unit and the like. Each unit is electrically connected with a PID controller or a DCS intelligent control system, and the PID controller is electrically connected with the DCS intelligent control system. By dynamically adjusting the mixing ratio of fuel gas and air, ignition is remotely triggered, the ignition state is detected, the temperature of a hearth is detected and controlled in real time, backward flow of flame of the hearth is detected, fuel gas is cut off, and fuel gas is cut off when flameout of a combustor is detected. According to the industrial kiln, an intelligent control system is adopted, air-fuel ratio self-adaptive adjustment is combined with cooperative control of a frequency conversion fan and an electric control valve, the fuel gas utilization rate is increased, and comprehensive energy consumption is reduced; innovation of an intelligent operation and maintenance system is achieved, and gas and electric power energy consumption can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent control of industrial kilns for lithium battery materials, and in particular to an intelligent control system, method and device for industrial kilns. Background Art

[0002] Lithium battery material industrial kilns are key equipment for high-temperature processing in production. Their combustion control and safety protection technologies directly affect production efficiency and energy utilization. In the existing technology, for example, Chinese invention patent CN101329110A discloses a fully automatic control system for oilfield heating furnaces. This system, based on a programmable logic controller (PLC), integrates flow, pressure, and temperature sensors and actuators, achieving functions such as outlet temperature control, air-fuel ratio, automatic ignition, and flameout protection, replacing manual operation to a certain extent. However, this technology still has the following drawbacks:

[0003] 1) Safety hazards: The burner is prone to backfire due to gas pressure fluctuations and nozzle blockage, and the existing system has a delay in detecting and responding to backfire, which cannot effectively block the gas supply, and may cause equipment damage or even safety accidents. 2) Unstable combustion conditions: The flame state (such as yellow flame, flame, black flame) is easily affected by gas pressure, combustion material ratio and furnace atmosphere. The existing technology lacks the ability to monitor and dynamically adjust the flame shape in real time, resulting in low combustion efficiency and increased pollutant emissions. 3) Insufficient intelligence: The existing system relies on local PLC control and has limitations in remote monitoring, fault self-diagnosis and adaptive adjustment. Once it is out of human intervention or the control system fails, intelligent remote maintenance and emergency response cannot be achieved.

[0004] These issues lead to high energy consumption, significant safety hazards, and significant fluctuations in product quality during the operation of industrial kilns. Therefore, a system that can monitor combustion conditions in real time, dynamically adjust the air-fuel ratio, quickly respond to abnormal conditions, and support remote intelligent control is urgently needed to improve the reliability and efficiency of kiln operations. Summary of the Invention

[0005] In response to the above-mentioned problems, the purpose of the present invention is to provide an intelligent control system, method and device for an industrial kiln, which can intelligently monitor the flame inside the kiln furnace and monitor it in real time, and intelligently adjust the combustion conditions of the burner, and the flow rates of air and gas.

[0006] The purpose of the present invention can be achieved through the following technical solutions: an intelligent control system, method and device for an industrial kiln, including.

[0007] A first aspect: An intelligent control system for an industrial kiln, comprising:

[0008] Air-fuel control unit, used to dynamically adjust the mixture ratio of gas and air;

[0009] Intelligent ignition unit, used to remotely trigger ignition and detect ignition status;

[0010] Furnace temperature control unit, used to detect and control the furnace temperature;

[0011] Backfire protection unit, used to detect backflow of furnace flame and cut off gas;

[0012] Flameout protection unit, used to cut off gas when detecting burner flameout;

[0013] Among them, the air-fuel control unit, furnace temperature control unit, backfire protection unit and flameout protection unit are all electrically connected to the PID controller, the intelligent ignition unit is electrically connected to the DCS intelligent control system, and the PID controller is electrically connected to the DCS intelligent control system.

[0014] As a further solution of the present invention, it also includes:

[0015] The flame monitoring unit is used to collect and intelligently identify the furnace flame, and cooperate with the PID controller to control the furnace flame; wherein, the flame monitoring unit is electrically connected to the DCS intelligent control system.

[0016] As a further solution of the present invention, it further includes: a leakage protection unit, which is used to monitor the burner's gas supply and cut off the gas supply when the gas supply is abnormal; wherein the leakage protection unit is electrically connected to the PID controller.

[0017] As a further solution of the present invention, an intelligent control device for an industrial kiln based on the system is provided, wherein the furnace temperature control unit controls the furnace temperature to an interval of 10°C.

[0018] A second aspect: An intelligent control method for an industrial kiln, comprising the following steps:

[0019] S1, adjust the mixing ratio of gas and air, and perform remote ignition by the DCS intelligent control system;

[0020] S2, real-time monitoring of furnace temperature, when the furnace temperature exceeds the set range, the furnace temperature is adjusted through the PID controller;

[0021] S3. When backfire, flameout or gas leakage is detected, cut off the gas supply.

[0022] As a further solution of the present invention, it also includes:

[0023] S4. The DCS intelligent control system monitors the flame shape in real time and adjusts the air-fuel ratio through the PID controller.

[0024] A third aspect: An intelligent control device for an industrial kiln, comprising:

[0025] A camera installed on the top of the furnace to capture the furnace flame, and a temperature sensor to detect the temperature inside the furnace;

[0026] The gas manual valve, electromagnetic shut-off valve, gas electric regulating valve, gas flange flow meter, gas pressure regulating valve, electric temperature regulating valve and intelligent self-closing valve are arranged in sequence according to the flow direction of the gas pipeline, and the hose sensor is arranged on the gas hose. The gas enters the burner nozzle through the pipeline and hose;

[0027] Manual air valve, electric air regulating valve, air flange flow meter, and air pressure regulating valve are arranged in sequence according to the flow direction of the air pipeline; air enters the burner through the pipeline;

[0028] An ignition detection pin and a firewall sensor are provided in the burner, wherein the ignition detection pin is electrically connected to the igniter;

[0029] Among them, the electromagnetic shut-off valve, gas electric regulating valve, electric temperature regulating valve, intelligent self-closing valve, hose sensor and air electric regulating valve are electrically connected to the PID controller; the PID controller, camera and igniter are electrically connected to the DCS intelligent control system, and the temperature sensor is electrically connected to the electric temperature regulating valve.

[0030] As a further solution of the present invention, an intelligent control device for an industrial furnace is provided based on the system, wherein the igniter is electrically connected to an electromagnetic shut-off valve.

[0031] Beneficial effects of the present invention:

[0032] 1. The industrial kiln of the present invention adopts an intelligent control system. Through the air-fuel ratio adaptive adjustment algorithm (gas / air dual closed-loop PID control), combined with the coordinated control of the variable frequency fan and the electric control valve, the gas utilization rate is improved and the overall energy consumption is reduced. It realizes the innovation of the intelligent operation and maintenance system and can reduce gas and electricity energy consumption.

[0033] 2. This invention integrates a DCS system remote monitoring module, supporting cloud-based storage of combustion parameters, fault self-diagnosis, and remote reset operations. This shortens equipment maintenance response time and significantly reduces the frequency of manual inspections. Furthermore, a closed-loop control system is constructed using machine vision (CCD camera) + DCS system, enabling real-time online identification of flame morphology (length / color / stability) and dynamic adjustment of the air-fuel ratio, thereby improving combustion efficiency and reducing CO emissions.

[0034] 3. The present invention constructs a multiple protection mechanism (triple protection of backfire / flameout / gas leakage), and realizes a 3-second rapid response through the linkage of PID controller and sensor, which reduces the risk of safety accidents, effectively solves the problem of burner damage caused by response delay in traditional systems, and can effectively eliminate safety hazards such as backfire.

[0035] 4. The present invention constructs a PID segmented control model based on the temperature sensor network to achieve 10°C level temperature fluctuation control. Combined with the gas flow-temperature fuzzy control algorithm, the uniformity of the temperature field in the furnace is improved, the product qualification rate is improved, and the temperature in the furnace can be better and more accurately controlled. The uneven temperature field in the furnace due to temperature difference problems will not occur, which effectively improves the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of an intelligent control system for an industrial kiln according to the present invention;

[0037] Figure 2 This is a flow chart of an intelligent control method for an industrial kiln according to the present invention;

[0038] Figure 3 This is a structural schematic diagram of an intelligent control device for an industrial kiln according to the present invention.

[0039] 100, furnace; 110, burner; 120, temperature sensor; 130, camera; 140, ignition probe; 150, firewall sensor; 160, igniter;

[0040] 200, gas pipeline; 210, gas manual valve; 220, solenoid shut-off valve; 230, gas electric regulating valve; 240, gas flange flow meter; 250, gas pressure regulating valve; 260, electric temperature regulating valve; 270, intelligent self-closing valve; 280, hose; 290, hose sensor;

[0041] 300, air duct; 310, manual air valve; 320, electric air regulating valve; 330, air flange flow meter; 340, air pressure regulating valve; 350, variable frequency fan;

[0042] 400, PID controller;

[0043] 500. DCS intelligent control system. DETAILED DESCRIPTION

[0044] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0045] like Figure 1 As shown, the present invention discloses an intelligent control system for an industrial kiln, including.

[0046] The air-fuel control unit is used to dynamically adjust the mixing ratio of gas and air; the air-fuel control unit mainly includes a gas electric control valve 230, a gas flange flow meter 240, an air electric control valve 320, an air flange flow meter 330 and a PID controller 400, etc.

[0047] Gas is input to the gas electric regulating valve 230 through the gas pipeline 200, and combustion air is output by the variable frequency fan 350 through the air pipeline 300 to the air electric regulating valve 320, and is controlled by the PID controller 400 according to the set reasonable gas and air flow ratio.

[0048] The intelligent ignition unit is used to remotely trigger ignition and detect the ignition status; the intelligent ignition unit includes a DCS intelligent control system 500, an igniter 160 and an ignition detection needle 140, etc.

[0049] After the operator outputs the ignition instruction through the DCS intelligent control system 500 of the intelligent ignition unit, the system transmits the instruction to the igniter 160, the igniter 160 sends a discharge signal, and starts the discharge ignition work through the ignition detection needle 140. At the same time, the ignition status can be detected through the ignition detection needle 140.

[0050] The furnace temperature control unit is used to detect and control the temperature of the furnace 100; the furnace temperature control unit includes a PID controller 400, an electric temperature regulating valve 260 and a temperature sensor 120, etc.

[0051] When the internal temperature of the furnace 100 reaches the process set temperature, the temperature sensor 120 feeds back the collected temperature signal to the electric temperature control valve 260. About 3 seconds later, the electric temperature control valve 260 feeds back the signal to the PID controller 400. After receiving the feedback, the PID controller 400 issues an execution instruction to the electric temperature control valve 260 to reduce the gas flow rate. After the temperature drops to 10°C of the set temperature, the temperature sensor 120 once again feeds back the collected signal to the electric temperature control valve 260, which then feeds back the signal to the PID controller 400. The PID controller 400 issues an instruction to increase the gas flow rate.

[0052] The backfire protection unit is used to detect flame backflow in the furnace 100 and cut off the gas; the backfire protection unit includes a PID controller 400, an electromagnetic shut-off valve 220 and a firewall sensor 150, etc.

[0053] When abnormal backfire occurs during combustion of the burner 110, the flame begins to flow back and contacts the firewall sensor 150. After about 3 seconds, the firewall sensor 150 converts the flame signal into an electrical signal and feeds it back to the PID controller 400. The PID controller 400 issues a flame-off command to the electromagnetic shut-off valve 220 to shut off the gas within 3 seconds.

[0054] The flameout protection unit is used to detect when the burner 110 is flameout and cut off the gas; the flameout protection unit includes an igniter 160, an electromagnetic shut-off valve 220 and an ignition detection needle 140.

[0055] If the burner 110 unexpectedly goes out, the ignition detection needle 140 detects that there is no flame and transmits a signal to the igniter 160 within 3 seconds. The igniter 160 then outputs a valve closing signal to the electromagnetic shut-off valve 220 within 3 seconds to execute the valve closing action.

[0056] The flame monitoring unit is used to collect and intelligently identify the flame in the furnace 100 and cooperate with the furnace temperature control unit to control the temperature of the furnace 100. The flame monitoring unit includes a DCS intelligent control system 500, a camera 130, a gas electric regulating valve 230, and an air electric regulating valve 320.

[0057] The camera 130 collects the combustion condition video of the burner 110 in the furnace and transmits it to the DCS intelligent control system 500 in real time online. If the system determines that the flame of the combustion condition is normal, no compulsory measures are taken. If the system determines that the flame of the combustion condition is abnormal, it will send an instruction to the PID controller 400. At this time, the PID controller 400 sends an instruction to the gas electric control valve 230 and the air electric control valve 320, and immediately executes the adjustment of the air-fuel flow ratio.

[0058] The leakage protection unit is used to monitor the burner 110 and cut off the gas supply when it is abnormal; the leakage protection unit includes a PID controller 400 and an intelligent self-closing valve 270, etc.

[0059] When the hose sensor 290 at the inlet end of the burner 110 detects that the pressure and flow of the gas hose 280 are abnormally too high or too low, the intelligent self-closing valve 270 will feed back the abnormal signal to the PID controller 400 within 3 seconds. At this time, the PID controller 400 issues a gas cut-off instruction to the electromagnetic cut-off valve 220 for execution.

[0060] In the above system structure, the air-fuel control unit, furnace temperature control unit, backfire protection unit and flameout protection unit are all electrically connected to the PID controller 400, the intelligent ignition unit is electrically connected to the DCS intelligent control system 500, and the PID controller 400 is electrically connected to the DCS intelligent control system 500.

[0061] like Figure 2 As shown, in combination with the above system, the present invention also discloses an intelligent control method for an industrial kiln, the steps comprising:

[0062] S1. Adjust the mixing ratio of gas and air, and perform remote ignition by the DCS intelligent control system 500.

[0063] Gas is input to the gas electric regulating valve 230 through the gas pipeline 200, and the combustion-supporting air is output by the variable frequency fan 350 through the air pipeline 300 to the air electric regulating valve 320. According to the reasonable gas and air flow ratio set in the PID controller 400, the output end of the PID controller 400 outputs a command signal to the gas electric regulating valve 230 and the air electric regulating valve 320 to start data calculation and automatically adjust the flow, and after being adjusted to a reasonable air-fuel ratio, it is sent to the burner 110.

[0064] When the operator outputs the ignition command through the DCS intelligent control system 500, the system transmits the command to the igniter 160. At this time, the igniter 160 sends a discharge signal and starts the discharge ignition work through the ignition detection needle 140. The gas is sprayed out through the nozzle and the combustion-supporting air is sprayed onto the electric spark to start the combustion.

[0065] S2. Real-time monitoring of the furnace 100 temperature. When the furnace 100 temperature exceeds a set range, the gas supply is adjusted through the PID controller 400.

[0066] Based on the furnace temperature control unit, when the internal temperature of the furnace 100 reaches the process set temperature, the temperature sensor 120 feeds back the collected temperature signal to the electric temperature control valve 260. After 3 seconds, the electric temperature control valve 260 feeds back the signal to the PID controller 400. After receiving the feedback, the PID controller 400 issues an execution instruction to the electric temperature control valve 260 to reduce the gas flow rate. After the temperature drops to 10°C of the set temperature, the temperature sensor 120 once again feeds back the collected signal to the electric temperature control valve 260, which then feeds back the signal to the PID controller 400. The PID issues an instruction to increase the gas flow rate.

[0067] S3. When backfire, flameout or gas leakage is detected, cut off the gas supply.

[0068] Working principle of backfire protection: When abnormal backfire occurs during combustion of the burner 110, the flame begins to flow back and contacts the firewall sensor 150. After about 3 seconds, the flame signal is converted into an electrical signal and fed back to the PID controller 400. The PID controller 400 issues a flame-off command to the electromagnetic shut-off valve 220 to shut off the gas within 3 seconds.

[0069] Working principle of flameout protection: When the burner 110 unexpectedly flames out, the ignition detection needle 140 detects that there is no flame and transmits the signal to the igniter 160 within 3 seconds. The igniter 160 then outputs a valve closing signal to the electromagnetic shut-off valve 220 within 3 seconds to execute the valve closing action.

[0070] Working principle of gas leakage protection: When the hose sensor 290 at the inlet end of the burner 110 detects that the pressure and flow of the gas hose 280 are abnormally large or small, the intelligent self-closing valve 270 will feed back the abnormal signal to the PID controller 400 within 3 seconds. At this time, the PID controller 400 issues a gas cut-off instruction to the electromagnetic cut-off valve 220 for execution.

[0071] S4. The DCS intelligent control system 500 monitors the flame shape in real time and adjusts the air-fuel ratio through the PID controller 400.

[0072] Working principle of the flame monitoring and adjustment system: The camera 130 collects the combustion condition video of the burner 110 in the furnace and transmits it to the DCS intelligent control system 500 in real time online. If the system determines that the flame of the combustion condition is normal, no compulsory measures will be taken. If the system determines that the flame of the combustion condition is abnormal, it will send an instruction to the PID controller 400. At this time, the PID controller 400 sends an instruction to the gas electric control valve 230 and the air electric control valve 320, and immediately executes the adjustment of the air-fuel flow ratio.

[0073] In combination with the above system and method, the present invention also discloses an intelligent control device for an industrial kiln, such as Figure 3 Shown, including:

[0074] A camera 130 mounted on the top of the furnace 100 for capturing the flame of the furnace 100 and a temperature sensor 120 for detecting the temperature inside the furnace 100;

[0075] A gas manual valve 210, a solenoid shut-off valve 220, a gas electric regulating valve 230, a gas flange flow meter 240, a gas pressure regulating valve 250, an electric temperature regulating valve 260, and an intelligent self-closing valve 270 are sequentially arranged along the gas pipeline flow direction 200, and a hose sensor 290 is arranged on the gas hose 280. The gas enters the nozzle of the burner 110 through the pipeline 200 and the hose 280;

[0076] A manual air valve 310, an electric air regulating valve 320, an air flange flow meter 330, and an air pressure regulating valve 340 are sequentially arranged along the air pipe 300; air enters the burner 110 through the air pipe 300;

[0077] An ignition detection needle 140 and a firewall sensor 150 are provided in the burner 110 , wherein the ignition detection needle 140 is electrically connected to the igniter 160 ;

[0078] Among them, the electromagnetic shut-off valve 220, the gas electric regulating valve 230, the electric temperature regulating valve 260, the intelligent self-closing valve 270, the hose sensor 290 and the air electric regulating valve 320 are electrically connected to the PID controller 400; the PID controller 400, the camera 130 and the igniter 160 are electrically connected to the DCS intelligent control system 500, and the temperature sensor 120 is electrically connected to the electric temperature regulating valve 260.

[0079] With the above-mentioned device structure, gas is input from the gas pipeline 200 to the gas electric regulating valve 230, and combustion-supporting air is output from the variable frequency fan 350 through the air pipeline 300 to the air electric regulating valve 320. According to the reasonable gas and air flow ratio set in the PID controller 400, the output end of the PID controller 400 outputs a command signal to the gas electric regulating valve 230 and the air electric regulating valve 320 to start data calculation and automatically adjust the flow. After being adjusted to a reasonable air-fuel ratio, it is sent to the burner 110, and the gas is sprayed out through the nozzle and the combustion-supporting air is sprayed onto the electric spark to start combustion.

[0080] When the operator outputs an ignition instruction to the DCS intelligent control system 500 , the system transmits the instruction to the igniter 160 . At this time, the igniter 160 sends a discharge signal and starts the discharge ignition work through the ignition detection needle 140 .

[0081] When abnormal backfire occurs during combustion of the burner 110, the flame begins to flow back and contacts the firewall sensor 150. After about 3 seconds, the flame signal is converted into an electrical signal and fed back to the PID controller 400. The PID controller 400 issues a flame-off command to the electromagnetic shut-off valve 220 to shut off the gas within 3 seconds.

[0082] When the burner 110 unexpectedly goes out, the ignition detection needle 140 detects that there is no flame and transmits a signal to the igniter 160 within 3 seconds. The igniter 160 then outputs a valve closing signal to the electromagnetic shut-off valve 220 within 3 seconds to execute the valve closing action.

[0083] The camera 130 collects the combustion condition video of the burner 110 in the furnace and transmits it to the DCS intelligent control system 500 in real time online. If the system determines that the flame of the combustion condition is normal, no compulsory measures are taken. If the system determines that the flame of the combustion condition is abnormal, it will send an instruction to the PID controller 400. At this time, the PID controller 400 sends an instruction to the gas electric control valve 230 and the air electric control valve 320, and immediately executes the adjustment of the air-fuel flow value.

[0084] When the internal temperature of the furnace 100 reaches the process set temperature, the temperature sensor 120 feeds back the collected temperature signal to the electric temperature control valve 260. After 3 seconds, the electric temperature control valve 260 feeds back the signal to the PID controller 400. After receiving the feedback, the PID controller 400 issues an execution instruction to the electric temperature control valve 260 to reduce the gas flow rate. After the temperature drops to 10°C of the set temperature, the temperature sensor 120 once again feeds back the collected signal to the electric temperature control valve 260, which then feeds back the signal to the PID controller 400. The PID issues an instruction to increase the gas flow rate.

[0085] When the hose sensor 290 at the inlet end of the burner 110 detects that the pressure and flow of the gas hose 280 are abnormally too high or too low, the intelligent self-closing valve 270 will feed back the abnormal signal to the PID controller 400 within 3 seconds. At this time, the PID controller 400 issues a gas cut-off instruction to the electromagnetic cut-off valve 220 for execution.

[0086] The gas manual valve 210 and the manual air valve 310 can be used to manually shut off the gas and air supply in an emergency or for maintenance. The gas flange flow meter 240 and the air flange flow meter 330 can be used to check the flow.

[0087] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0088] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

Claims

1. An intelligent control system for an industrial kiln, characterized in that: include: Air-fuel control unit, used to dynamically adjust the mixture ratio of gas and air; Intelligent ignition unit, used to remotely trigger ignition and detect ignition status; Furnace temperature control unit, used to detect and control the furnace temperature; Backfire protection unit, used to detect backflow of furnace flame and cut off gas; Flameout protection unit, used to cut off gas when detecting burner flameout; Among them, the air-fuel control unit, furnace temperature control unit, backfire protection unit and flameout protection unit are all electrically connected to the PID controller, the intelligent ignition unit is electrically connected to the DCS intelligent control system, and the PID controller is electrically connected to the DCS intelligent control system.

2. The system according to claim 1, wherein: Also includes: The flame monitoring unit is used to collect and intelligently identify the furnace flame, and cooperate with the PID controller to control the furnace flame; wherein, the flame monitoring unit is electrically connected to the DCS intelligent control system.

3. The system according to claim 1, wherein: Also includes: The leakage protection unit is used to monitor the burner gas supply and cut off the gas supply when the gas supply is abnormal; wherein the leakage protection unit is electrically connected to the PID controller.

4. The system according to claim 1, wherein: In an intelligent control device for an industrial kiln based on the system, the furnace temperature control unit controls the furnace temperature at intervals of 10°C.

5. The system according to any one of claims 1 to 4, characterized in that An intelligent control method for an industrial kiln based on the system includes the following steps: S1, adjust the mixing ratio of gas and air, and perform remote ignition by the DCS intelligent control system; S2, real-time monitoring of furnace temperature, when the furnace temperature exceeds the set range, the furnace temperature is adjusted through the PID controller; S3. When backfire, flameout or gas leakage is detected, cut off the gas supply.

6. The system according to claim 5, characterized in that The steps also include: S4. The DCS intelligent control system monitors the flame shape in real time and adjusts the air-fuel ratio through the PID controller.

7. The system according to claim 1, wherein: An intelligent control device for an industrial kiln based on the system includes: A camera installed on the top of the furnace to capture the furnace flame, and a temperature sensor to detect the temperature inside the furnace; The gas manual valve, electromagnetic shut-off valve, gas electric regulating valve, gas flange flow meter, gas pressure regulating valve, electric temperature regulating valve and intelligent self-closing valve are arranged in sequence according to the flow direction of the gas pipeline, and the hose sensor is arranged on the gas hose. The gas enters the burner nozzle through the pipeline and hose; Manual air valve, electric air regulating valve, air flange flow meter, and air pressure regulating valve are arranged in sequence according to the flow direction of the air pipeline; air enters the burner through the pipeline; An ignition detection pin and a firewall sensor are provided in the burner, wherein the ignition detection pin is electrically connected to the igniter; Among them, the electromagnetic shut-off valve, gas electric regulating valve, electric temperature regulating valve, intelligent self-closing valve, hose sensor and air electric regulating valve are electrically connected to the PID controller; the PID controller, camera and igniter are electrically connected to the DCS intelligent control system, and the temperature sensor is electrically connected to the electric temperature regulating valve.

8. The system according to claim 7, characterized in that In an intelligent control device for an industrial furnace based on the system, the igniter is electrically connected to an electromagnetic shut-off valve.

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