Multi-channel burner for methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer

Abstract

The invention discloses a multi-channel combustor for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer. The multi-channel combustor comprises an air supply system, an ignition system, a monitoring system, a fuel system and an electric control system. The air supply system comprises a fan, an air conveying pipeline and an air pipe, the air conveying pipeline penetrates through the combustor shell through the air pipe to be connected with the center gas ignition pipeline, and the air conveying pipeline penetrates through the combustor shell through the air pipe to be in full contact with mixed fuel of a main path gas air pipeline, input into the combustor main path, of the gas supply main pipeline. The electric control system automatically adjusts fuel supply and air distribution according to fluctuation of pressure, temperature, flame form and the like of the monitoring system, combustion is sufficient, and heat efficiency is high; the safety is high, and the combustor is provided with a central gas ignition pipeline to independently supply gas for combustion; during starting, the central pipeline is firstly ignited, and after normal and stable combustion, the electric control system opens the main gas valve, so that the fuel can enter the main gas air pipeline of the combustor to be normally combusted without detonation.

Description

Technical Field

[0001] The present application relates to the technical field of potash fertilizer production, and in particular to a multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer. Background Art

[0002] As society develops rapidly, the consumption of fossil energy is also increasing, and the harmful gases emitted when using fossil fuels are also increasing. This has promoted the development of research on replacing fossil fuels with clean and renewable resources.

[0003] The production of citric acid-soluble potash fertilizer is a high-energy consumption industry. In particular, a large amount of energy is required in the process of sintering potassium feldspar into clinker. As the main thermal equipment, the performance of the kiln directly affects the output, quality and economic benefits of the product to a certain extent. Among the existing fuels, natural gas has the characteristics of convenient network transportation, large reserves, high calorific value, stable combustion, and low pollution. Therefore, people have developed the existing traditional natural gas burner installed in the kiln; there is a shell with a cavity inside, and the shell is provided with an air inlet and a gas inlet. After the gas and air enter the cavity and are fully mixed, they are burned and released at the silicon carbide burner at the front end of the burner. The high-temperature flue gas after combustion is used to achieve radiation drying and burning of the product materials in the kiln. However, the existing structure of the burner mostly uses coal powder as fuel and the combustion is not sufficient. Even when using gas fuel, there is also the disadvantage of uneven mixing of air and gas, which makes the gas unable to be completely burned. Therefore, a certain amount of black smoke will be released during the combustion process, resulting in energy waste, and there is a certain probability of affecting product quality. Summary of the invention

[0004] The technical problem to be solved by the present application is to overcome the existing defects and provide a multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer, comprising an air supply system, an ignition system, a monitoring system, a fuel system, an electronic control system and a burner; The air supply system includes a fan, an air delivery pipeline and an air duct. The air delivery pipeline passes through the burner housing through the air duct and is connected to the central gas ignition pipeline. The air delivery pipeline passes through the burner housing through the air duct and is connected to the main gas air pipeline of the gas supply main pipeline. The air delivery pipeline also passes through the burner housing and enters the rotary combustion-supporting air inlet pipeline and the axial combustion-supporting air inlet pipeline. The ignition system includes a plasma generator, an ignition switch, and a solenoid valve group. The main body of the ignition system is located at the rear section of the central gas ignition pipeline and is connected to an electric regulating mixing valve with a pressure detection device. The electric regulating mixing valve is connected to the gas inlet of the central gas ignition pipeline, and the gas inlet of the central gas ignition pipeline is connected to the gas supply main pipeline. The monitoring system includes a flame detector, a pressure sensor, a temperature detector, a high temperature camera and an infrared sensor, which are used to monitor the operating status of the burner; The fuel system is adjusted by a microcomputer control program, and enters the pressurized gas pipeline for gas fuel delivery. A regulating valve is provided on each branch pipeline. The main gas supply pipeline passes through the burner shell and is connected to the main gas air pipeline of the main burner, and ignites through the ignition system; The electronic control system is mainly used for regulating the fuel quantity, air supply quantity and smoke drainage, which is achieved by opening and closing each regulating valve and adjusting the angle of the turbulence sheet.

[0006] As a preferred technical solution of the present application, the head of the burner adopts a replaceable structure and is connected to the rear end via a rotating buckle at the interface.

[0007] As a preferred technical solution of the present application, the central gas ignition pipeline independently supplies gas for combustion.

[0008] As a preferred technical solution of the present application, the central gas ignition pipeline, the main gas air pipeline, the rotary combustion-supporting air inlet pipeline, and the axial combustion-supporting air inlet pipeline are distributed outward in sequence around the axial center of the burner.

[0009] As a preferred technical solution of the present application, the flame detector in the monitoring system of the burner is located in the observation hole of the rotary kiln body, and is used to monitor the flame status in real time.

[0010] As a preferred technical solution of the present application, the pressure sensor in the burner monitoring system is used to detect the internal pressure of the rotary kiln body, and is connected to the signal input end of the regulating valve through the signal output end to achieve automatic regulation.

[0011] As a preferred technical solution of the present application, the high temperature resistant camera and infrared sensor in the monitoring system of the burner are installed in the internal pipe of the burner to monitor the temperature changes and flame shape during the combustion process.

[0012] A method for using a multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer comprises the following steps: Start the air supply system and send air into the burner through the fan; Start the ignition system. When starting, ignite the central gas ignition pipeline first. When the temperature reaches 630℃-660℃, the electronic control system opens the main gas valve, and the gas enters the main gas air pipeline of the burner main pipeline for normal combustion without explosion. After stable combustion, the electronic control system opens the main gas valve, and the gas enters the main gas air pipeline; The sensor monitors the pressure, temperature and flame shape inside the burner in real time, and the data processing center adjusts the combustion parameters based on the monitoring data; The microcomputer control system controls the gas supply according to the set program to ensure sufficient mixing of fuel and air; The electronic control system adjusts the opening and closing of each regulating valve and the angle of the turbulence plate according to the combustion conditions to ensure combustion efficiency and safety; After the combustion is completed, the production process of potash fertilizer is carried out.

[0013] Compared with the prior art: the present application has high thermal efficiency, the electronic control system automatically adjusts the fuel supply and air distribution according to the fluctuations of the pressure, temperature, flame shape, etc. of the monitoring system, and the combustion is sufficient and the thermal efficiency is high.

[0014] High safety, the burner is equipped with a central gas ignition pipeline for independent gas supply and combustion; when starting, the central pipeline is ignited first, and after normal and stable combustion, the electronic control system opens the main gas valve, and the fuel can enter the main gas air pipeline of the burner for normal combustion without explosion. When the burner fails, the electronic control system can cut and separate the pipelines in time based on the feedback of the monitoring system to reduce losses.

[0015] The fuel is controlled by the microcomputer control system according to the set program to enter the burner, and the primary air and gas fuel are mixed and burned, and the secondary air assists combustion, so that the fuel is fully utilized. The fuel combustion status is detected by the flame automatic monitoring system. When there is a combustion failure such as lack of oxygen, fuel underpressure, flow interruption, insufficient gas volume, etc., the control system issues a fault command, the solenoid valve of the fuel system is urgently closed, the gas power supply is cut off, and the burner automatically purges and cools down before shutting down, indicating the fault.

[0016] Rapid adjustment, rapid changes in the combustion rate in the burner, greater adaptability to external load changes. The control system can promptly detect and eliminate combustion rate disturbances, and achieve coordinated control of fuel, air supply and other parameters.

[0017] Easy to maintain, the head of the burner is connected by a later rotating snap-on connection, which is convenient for disassembly and subsequent maintenance of the burner.

[0018] It effectively solved the technical problems of high burner energy consumption, large emissions, incomplete combustion, inability to monitor and control in real time, high failure downtime rate and long maintenance cycle in potash fertilizer production, and achieved the goal of energy conservation, emission reduction, cost reduction and efficiency improvement in citrate-soluble potash fertilizer production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this application.

[0020] In the figure: 1 air supply system, 11 fan, 12 air supply duct, 13 air duct, 14 rotary combustion-supporting air inlet duct, 15 main gas air duct, 16 axial combustion-supporting air inlet duct, 2 ignition system, 3 monitoring system, 31 turbulence plate, 32 electric regulating mixing valve, 4 fuel system, 41 central gas ignition duct, 42 gas supply main duct, 5 electronic control system, 51 main gas valve, 52 regulating valve, 6 burner housing, 7 rotating buckle, 8 burner head. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] See also Figure 1 The present application provides a technical solution: a multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer, comprising an air supply system 1, an ignition system 2, a monitoring system 3, a fuel system 4, an electronic control system 5 and a burner.

[0023] The air supply system 1 includes a fan 11, an air supply pipe 12 and an air duct 13. The air supply pipe 12 passes through the burner housing 6 through the air duct 13 and is connected to the central gas ignition pipe 41. The air supply pipe 12 passes through the burner housing 6 through the air duct 13 and is fully in contact with the mixed fuel of the main gas air duct 15 input into the main burner of the gas supply main pipe 42. The air supply pipe 12 also passes through the burner housing 6 to enter the rotational combustion-supporting air inlet pipe 14 and the axial combustion-supporting air inlet pipe 16.

[0024] The fan 11 is responsible for providing sufficient air flow to ensure sufficient oxygen supply during the combustion process.

[0025] Before starting the burner, the fan 11 is first turned on to deliver air to various parts of the burner through the air duct 2; the air volume of the fan 11 can be adjusted by the electronic control system 5 to meet different combustion requirements.

[0026] The air delivery duct 12 is a passage connecting the fan 11 and various parts inside the burner, and is responsible for evenly distributing the air provided by the fan 11 to different areas of the burner to ensure sufficient mixing and combustion of the air.

[0027] The air delivery duct 12 is connected to the burner housing 6 through the air duct 13, and delivers air to the central gas ignition duct 41, the main gas air duct 15, the rotary combustion-supporting air inlet duct 14, and the axial combustion-supporting air inlet duct 16. The design of the air delivery duct 12 needs to consider the uniform distribution of airflow and the minimization of resistance to improve combustion efficiency.

[0028] The air duct 13 is a short pipe connecting the air delivery duct 12 and the internal pipe of the burner, and is responsible for guiding the air to a specific combustion area. The air duct 13 needs to ensure smooth and uniform distribution of airflow.

[0029] The air duct 13 is connected to the central gas ignition pipe 41 and the main gas air duct 15 through the burner housing 6 to ensure that air can directly enter these key locations; the air duct 13 is also connected to the rotary combustion-supporting air inlet duct 14 and the axial combustion-supporting air inlet duct 16 to provide additional combustion-supporting air.

[0030] The main gas and air duct 15 is responsible for mixing gas and air for combustion to improve combustion efficiency and reduce pollutant emissions.

[0031] The swirling combustion-supporting air inlet duct 14 and the axial combustion-supporting air inlet duct 16 are parts that assist combustion and enhance the stability and efficiency of combustion by providing additional combustion-supporting air. The swirling combustion-supporting air inlet duct 14 can produce a swirl effect to promote the mixing of gas and air; the axial combustion-supporting air inlet duct 16 provides axial combustion-supporting air to ensure uniform combustion.

[0032] The air delivery duct 12 enters the rotary combustion-supporting air inlet duct 14 and the axial combustion-supporting air inlet duct 16 through the burner housing 6 to provide necessary combustion-supporting air. The electronic control system 5 adjusts the flow rate of the combustion-supporting air according to the combustion conditions to ensure the high efficiency and stability of the combustion.

[0033] The ignition system 2 includes a plasma generator, an ignition switch, and a solenoid valve group. The main body of the ignition system 2 is located at the rear section of the central gas ignition pipeline 41 and is connected to an electric regulating mixing valve 32 with a pressure detection device. The electric regulating mixing valve 32 is connected to the air inlet of the central gas ignition pipeline 41, and the air inlet of the central gas ignition pipeline 41 is connected to the gas supply main pipeline 42.

[0034] The plasma generator generates high-temperature plasma to ignite the fuel gas in the central fuel gas ignition pipe 41. The high temperature of the plasma can quickly ignite the fuel gas, ensuring the reliability and rapidity of the ignition process.

[0035] When starting the burner, the plasma generator is first started by the ignition switch, and the generated plasma passes through the gas in the central gas ignition pipe 41 to ignite the gas. The start-up and working state of the plasma generator can be monitored and controlled by the electronic control system 5.

[0036] The ignition switch is the component that controls the start and stop of the plasma generator, ensuring the safety and controllability of the ignition process.

[0037] The solenoid valve group is used to control the supply of gas to ensure accurate supply of gas during the ignition process; the solenoid valve group can respond quickly according to the instructions of the electronic control system 5 and adjust the gas flow.

[0038] During the ignition process, the electronic control system 5 will adjust the gas flow rate of the gas supply main pipeline 42 through the solenoid valve group to ensure that the amount of gas in the central gas ignition pipeline 41 is appropriate to avoid excess or deficiency.

[0039] The electric regulating mixing valve 32 is provided with a pressure detection device for adjusting the mixing ratio of the gas and air entering the central gas ignition pipe 41. The pressure detection device can monitor the pressure of the gas and air in real time to ensure accurate control of the mixing ratio.

[0040] The central gas ignition pipe 41 ignites the gas through the plasma generator to start the combustion process. After the ignition is successful, the central gas ignition pipe 41 can maintain a stable flame to provide conditions for the subsequent main gas combustion.

[0041] The gas supply main pipeline 42 is the main pipeline for transporting gas, ensuring that the gas can smoothly reach the central gas ignition pipeline 41 and the main gas air pipeline 15.

[0042] The monitoring system 3 includes a flame detector, a pressure sensor, a temperature detector, a high temperature camera and an infrared sensor, and is used to monitor the operating status of the burner.

[0043] The fuel system 4 is adjusted by a microcomputer control program and enters the pressurized gas pipeline for gas fuel transportation. A regulating valve 52 is provided on each branch pipeline. The gas supply main pipeline 42 passes through the burner housing 6 and is connected to the main gas air pipeline 15 of the burner main road. After the fuel enters the main gas air pipeline 15 of the burner, it is mixed with the primary air input by the air supply pipeline 12 through the burner housing 6 through the air duct 13, and is ignited by the ignition system 2.

[0044] The microcomputer control program is responsible for accurately controlling the gas supply according to the preset combustion parameters and real-time monitoring data. Through intelligent control, the efficiency and stability of the combustion process are ensured.

[0045] The microcomputer control program automatically adjusts the opening and closing degree of the regulating valve 52 of each branch pipeline to ensure the accurate supply of gas; at the same time, it can also adjust the combustion parameters in real time according to the feedback data of the monitoring system 3 to optimize the combustion process.

[0046] The pressurized gas pipeline transports gas fuel from the gas tank or gas supply system to various parts of the burner by pressurizing it and provides sufficient pressure to support combustion.

[0047] The pressurized gas pipeline delivers gas fuel to the gas supply main pipeline 42 and distributes it to different parts of the burner through various branch pipelines. The microcomputer control program can adjust the gas supply pressure of the pressurized gas pipeline as needed to ensure a stable supply of gas.

[0048] The regulating valve 52 is installed on each branch pipeline to accurately control the flow of the gas. By adjusting the opening and closing degree of the regulating valve 52, it can be ensured that the supply of gas in different combustion stages is moderate to avoid excessive or insufficient.

[0049] The gas supply main pipeline 42 is the main passage connecting the pressurized gas pipeline and the burner main gas air pipeline 15, and is responsible for transporting the gas to the main combustion area of ​​the burner.

[0050] The gas supply main pipeline 42 passes through the burner housing 6 and is connected to the main gas and air pipeline 15. Through the control of the regulating valve 52, it is ensured that the flow rate and pressure of the gas before entering the main gas and air pipeline 15 are moderate.

[0051] The main gas and air duct 15 is responsible for mixing the gas and air for combustion; the main gas and air duct 15 ensures that the gas and air are fully mixed, thereby improving the combustion efficiency and reducing pollutant emissions.

[0052] The gas supply main pipeline 42 delivers the gas to the main gas air pipeline 15 for primary air mixing. The mixed gas and air are ignited under the action of the ignition system 2 for efficient combustion.

[0053] The electronic control system 5 is mainly used for regulating the fuel quantity, the air supply quantity and the smoke drainage, which are achieved by opening and closing the regulating valves 52 and adjusting the angle of the turbulence blades 31 .

[0054] Furthermore, the head 8 of the burner adopts a replaceable structure and is connected to the rear end via a rotating buckle 7 at the interface.

[0055] The burner head 8 adopts a replaceable structure, and different types of heads can be selected according to different combustion requirements and working conditions, thereby improving the applicability and flexibility of the burner; the burner head is connected to the rear end of the burner through a rotating buckle 7, which is convenient for disassembly and replacement; when the head needs to be replaced, just loosen the rotating buckle 7 to easily remove the old head, and then re-fix the rotating buckle 7 after installing the new head, thereby realizing quick disassembly and installation of the burner head.

[0056] Furthermore, the central gas ignition pipe 41 independently supplies gas for combustion. During startup, the central gas ignition pipe 41 is ignited first. When the temperature reaches 630°C-660°C, the electronic control system 5 opens the main gas valve 51, and the main gas air pipe 15 entering the main path of the burner burns normally without explosion.

[0057] The central gas ignition pipeline 41 provides conditions for the subsequent main gas combustion. The central gas ignition pipeline 41 is an independent gas supply, ensuring that the ignition process is not affected by the main gas supply, thereby improving the success rate and safety of ignition.

[0058] When the burner is started, the gas in the central gas ignition pipe 41 is first ignited by the ignition system 2. After the ignition is successful, the flame in the central gas ignition pipe 41 will gradually stabilize, providing conditions for the subsequent main gas combustion.

[0059] After the ignition is successful, the electronic control system 5 will monitor the temperature of the central gas ignition pipe 41. When the temperature reaches 630°C-660°C, the electronic control system 5 will automatically open the main gas valve 51 to allow the gas to enter the main gas air pipe 15 to start the combustion of the main gas.

[0060] The main gas valve 51 controls the gas supply of the main gas air duct 15 to ensure the accurate supply of the main gas. The opening and closing of the main gas valve 51 is automatically controlled by the electronic control system 5 according to the monitoring data.

[0061] Furthermore, the fuel is controlled by a microcomputer control system to enter the burner according to a set program, and is burned by mixing primary air with gas fuel, and secondary air assists combustion, so that the fuel is fully utilized. When a combustion failure occurs, the control system issues a fault command, the solenoid valve of the fuel system 4 is urgently closed, the gas power supply is cut off, and then the air flow rate of the air supply pipeline 12 and the rotary kiln head cooler is rapidly increased to exhaust the combustible gas in the device as soon as possible to achieve cooling.

[0062] The primary air enters the main gas air duct 15 through the air delivery duct 12 and the air pipe 13, mixes with the gas fuel, and provides the oxygen required for combustion.

[0063] The secondary air enters the burner through the rotary combustion-supporting air inlet duct 14 and the axial combustion-supporting air inlet duct 16 to provide additional combustion-supporting air and enhance the stability and efficiency of combustion.

[0064] The flow rates of the primary air and the secondary air are adjusted by the electronic control system 5 to ensure sufficient supply of oxygen during the combustion process and improve the combustion efficiency.

[0065] When the monitoring system 3 detects a combustion failure (such as lack of oxygen, fuel underpressure, flow interruption, insufficient gas volume, etc.), the control system will immediately issue a fault command, and the solenoid valve of the fuel system 4 will be closed urgently, cutting off the gas source and power supply. At the same time, the electronic control system 5 will quickly increase the air flow rate of the air supply pipeline 12 and the rotary kiln head cooler to exhaust the combustible gas in the device as soon as possible, achieve cooling, and ensure safety.

[0066] Furthermore, the central gas ignition pipe 41, the main gas air pipe 15, the rotary combustion-supporting air inlet pipe 14, and the axial combustion-supporting air inlet pipe 16 are distributed outward in sequence around the axial center of the burner.

[0067] The layered design of the central gas ignition duct 41, the main gas air duct 15, the rotary combustion-supporting air inlet duct 14 and the axial combustion-supporting air inlet duct 16 ensures multi-level mixing of gas and air and improves combustion efficiency.

[0068] Furthermore, the flame detector in the burner monitoring system 3 is located in the observation hole of the rotary kiln body and is used to monitor the flame state in real time.

[0069] The flame detector is used to monitor the flame status of the burner in real time. By detecting the existence and intensity of the flame, the stability and safety of the combustion process are ensured; the flame detector is installed in the observation hole of the rotary kiln body, and the flame status of the burner can be directly observed.

[0070] The flame detector detects the spectral characteristics of the flame through an optical sensor and transmits the data of the flame state to the electronic control system 5 in real time. The electronic control system 5 adjusts the combustion parameters according to the data to ensure the stability and safety of the combustion process.

[0071] Furthermore, the pressure sensor in the burner monitoring system 3 is used to detect the internal pressure of the rotary kiln body, and is connected to the signal input end of the regulating valve 52 through the signal output end to achieve automatic regulation.

[0072] The pressure sensor is used to detect the pressure inside the rotary kiln body in real time; by detecting the pressure change, the stability and safety of the combustion process are ensured; the pressure sensor is installed inside the rotary kiln body and can accurately measure the pressure change in the kiln.

[0073] Furthermore, the high temperature resistant camera and infrared sensor in the burner monitoring system 3 are installed in the internal pipe of the burner to monitor the temperature change and flame shape during the combustion process.

[0074] The high temperature camera is used to monitor the flame shape and combustion conditions in real time during the combustion process; the high temperature camera can work normally in a high temperature environment, provide clear video images, and help the operator to intuitively understand the combustion process; the high temperature camera is connected to the electronic control system 5 through a data cable, and transmits the video images to the monitoring center in real time. The operator can view the flame shape and combustion conditions during the combustion process through the monitoring screen, and promptly discover and handle abnormalities.

[0075] The infrared sensor is installed in the internal pipe of the burner to monitor the temperature changes in the combustion process in real time. The infrared sensor can accurately detect the temperature distribution in the high-temperature area through non-contact measurement to ensure that the temperature of the combustion process is within a safe range.

[0076] When in use: first start the fan 11 to ensure that the fan 11 provides sufficient air flow to meet the sufficient supply of oxygen during the combustion process; the air volume of the fan 11 can be adjusted by the electronic control system 5 to adapt to different combustion requirements; the fan 11 transports air to various parts of the burner through the air supply pipe 12 and the air duct 13, including the central gas ignition pipe 41, the main gas air pipe 15, the rotary combustion-supporting air inlet pipe 14 and the axial combustion-supporting air inlet pipe 16.

[0077] Start the ignition system 2, start the plasma generator through the ignition switch, the plasma generator generates high-temperature plasma, and ignites the gas in the central gas ignition pipe 41; the startup and working status of the plasma generator can be monitored and controlled by the electronic control system 5; the electronic control system 5 monitors the temperature of the central gas ignition pipe 41; when the temperature reaches 630℃-660℃, the electronic control system 5 will automatically open the main gas valve 51 to allow the gas to enter the main gas air duct 15 and start the combustion of the main gas; the main gas valve 51 controls the gas supply of the main gas air duct 15 to ensure the accurate supply of the main gas.

[0078] The flame detector is installed in the observation hole of the rotary kiln body to monitor the flame state of the burner in real time; the flame detector detects the spectral characteristics of the flame through an optical sensor and transmits the data of the flame state to the electronic control system 5 in real time. The electronic control system 5 adjusts the combustion parameters according to these data to ensure the stability and safety of the combustion process; the pressure sensor is installed inside the rotary kiln body to detect the pressure change in the kiln in real time; the pressure sensor is connected to the signal input end of the electronic control system 5 through the signal output end, and the electronic control system 5 adjusts the combustion parameters according to the pressure data to ensure that the pressure is within a safe range; the high temperature camera is installed in the internal pipeline of the burner to monitor the flame shape and combustion conditions in real time during the combustion process; the infrared sensor is installed in the internal pipeline of the burner to monitor the temperature change in real time during the combustion process; the sensor data mentioned above is transmitted to the electronic control system 5 through the data line, and the electronic control system 5 adjusts the combustion parameters according to these data to ensure the efficiency and safety of the combustion process; the microcomputer control system accurately controls the supply of gas according to the preset combustion parameters and real-time monitoring data; and automatically adjusts the opening and closing degree of the regulating valve 52 of each branch pipeline to ensure the accurate supply of gas. At the same time, according to the feedback data of the monitoring system 3, the combustion parameters are adjusted in real time to optimize the combustion process; the electronic control system 5 adjusts the opening and closing of each regulating valve 52 and the angle of the turbulence plate 31 according to the combustion situation, and is responsible for the fuel quantity adjustment, air supply volume adjustment and smoke drainage adjustment, which is achieved by opening and closing each regulating valve 52 and adjusting the angle of the turbulence plate 31 to ensure combustion efficiency and safety; When the monitoring system 3 detects a combustion failure (such as lack of oxygen, fuel underpressure, flow interruption, insufficient gas volume, etc.), the control system will immediately issue a fault command; the solenoid valve of the fuel system will be closed urgently, cutting off the gas source and power supply to prevent gas accumulation from causing accidents; the electronic control system 5 will quickly increase the air flow rate of the air duct 12 and the rotary kiln head cooler to exhaust the combustible gas in the device as soon as possible, achieve cooling, and ensure safety; after the combustion is completed, the potash fertilizer production process will be carried out; according to the feedback data of the monitoring system 35, the combustion parameters are adjusted to ensure the efficiency and stability of potash fertilizer production.

[0079] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer, characterized in that: It includes an air supply system (1), an ignition system (2), a monitoring system (3), a fuel system (4), an electronic control system (5) and a burner; The air supply system (1) comprises a fan (11), an air delivery pipeline (12) and an air duct (13); the air delivery pipeline (12) passes through the burner housing (6) through the air duct (13) and is connected to the central gas ignition pipeline (41); the air delivery pipeline (12) passes through the burner housing (6) through the air duct (13) and is connected to the main gas air pipeline (15) of the gas supply main pipeline (42); the air delivery pipeline (12) also passes through the burner housing (6) and enters the rotary combustion-supporting air inlet pipeline (14) and the axial combustion-supporting air inlet pipeline (16); The ignition system (2) comprises a plasma generator, an ignition switch, and a solenoid valve group. The main body of the ignition system (2) is located at the rear section of the central gas ignition pipeline (41) and is connected to an electric regulating mixing valve (32) with a pressure detection device. The electric regulating mixing valve (32) is connected to the gas inlet of the central gas ignition pipeline (41). The gas inlet of the central gas ignition pipeline (41) is connected to the gas supply main pipeline (42). The monitoring system (3) includes a flame detector, a pressure sensor, a temperature detector, a high temperature resistant camera and an infrared sensor, and is used to monitor the operating status of the burner; The fuel system (4) is adjusted by a microcomputer control program and enters a pressurized gas pipeline to transport gas fuel. A regulating valve (52) is provided on each branch pipeline. The gas supply main pipeline (42) passes through the burner housing (6) and is connected to the main gas air pipeline (15) of the burner main route, and is ignited by the ignition system (2); The electric control system (5) is mainly used for regulating the amount of fuel, the amount of air supply and the amount of smoke drainage, which are achieved by opening and closing the regulating valves (52) and adjusting the angle of the turbulence blades (31).

2. The multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer according to claim 1, characterized in that: The head (8) of the burner adopts a replaceable structure and is connected to the rear end via a rotating buckle (7) at the interface.

3. The multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer according to claim 1, characterized in that: The central gas ignition pipeline (41) independently supplies gas for combustion.

4. The multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer according to claim 1, characterized in that: The central gas ignition pipeline (41), the main gas air pipeline (15), the rotational combustion-supporting air inlet pipeline (14), and the axial combustion-supporting air inlet pipeline (16) are sequentially distributed outwardly around the axial center of the burner.

5. The multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer according to claim 1, characterized in that: The flame detector in the burner monitoring system (3) is located in the observation hole of the rotary kiln body and is used to monitor the flame state in real time.

6. The multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer according to claim 1, characterized in that: The pressure sensor in the burner monitoring system (3) is used to detect the internal pressure of the rotary kiln body, and is connected to the signal input end of the regulating valve (52) through the signal output end to achieve automatic regulation.

7. The multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer according to claim 1, characterized in that: The high temperature resistant camera and infrared sensor in the burner monitoring system (3) are installed in the internal pipe of the burner to monitor the temperature change and flame shape during the combustion process.

8. A method for using the multi-channel burner for a methanol-to-hydrogen fuel rotary kiln for producing potash fertilizer according to any one of claims 1 to 8, characterized in that: The following steps are involved: The air supply system (1) is started to supply air to the burner via the fan (11); The ignition system (2) is started. When started, the central gas ignition pipe (41) is first ignited. When the temperature reaches 630°C-660°C, the electronic control system (5) opens the main gas valve (51), and the gas enters the main gas air pipe (15) of the main path of the burner for normal combustion without explosion. After stable combustion, the electronic control system (5) opens the main gas valve (51), and the gas enters the main gas air pipe (15); The sensor monitors the pressure, temperature and flame shape inside the burner in real time, and the data processing center adjusts the combustion parameters based on the monitoring data; The microcomputer control system controls the gas supply according to the set program to ensure sufficient mixing of fuel and air; The electronic control system (5) adjusts the opening and closing of each regulating valve (52) and the angle of the turbulence blade according to the combustion conditions to ensure combustion efficiency and safety; After the combustion is completed, the production process of potash fertilizer is carried out.

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