A method for improving the temperature of waste gas at the inlet of an incinerator by backflow of hot flue gas

Abstract

The present application relates to waste gas treatment technical field, disclose a kind of heat smoke backflow method for improving incinerator inlet waste gas temperature, it is applied to regenerative incinerator.The method is by connecting in the bypass pipeline between the purification flue gas outlet and waste gas inlet of regenerative incinerator, part of purification flue gas is led back to waste gas inlet pipeline;The purification flue gas led back is mixed with original waste gas;Real-time monitoring the temperature of mixed waste gas;And according to the temperature dynamic adjustment the purification flue gas flow in bypass pipeline.The method improves the initial temperature of waste gas into incinerator, effectively alleviates the risk of crystallization material precipitation caused by low-temperature waste gas, maintains the patency of regenerator and system operation stability.Through adjusting temperature, while avoiding excessive consumption of auxiliary fuel, the stability of combustion condition is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, and particularly relates to a hot flue gas backflow method for increasing the temperature of inlet waste gas of an incinerator. BACKGROUND

[0002] In the field of industrial waste gas treatment, regenerative incinerator (RTO) is a widely used device for efficient treatment of volatile organic compounds (VOCs) and other pollutants. Its core principle is to use the heat of high-temperature flue gas after combustion to preheat the low-temperature waste gas entering the incinerator, so as to achieve the purpose of energy saving. However, in actual operation, the temperature of the inlet waste gas is often too low, especially when treating waste gas containing easily crystallized components (such as naphthalene), low temperature can cause crystalline substances to precipitate, causing the regenerator to be blocked, the airflow to be unevenly distributed, and the stability and treatment efficiency of the system to be severely affected. The traditional method mainly tries to improve the inlet temperature by optimizing the structure of the regenerator or prolonging the preheating time, but the effect is limited and may increase energy consumption or system complexity. SUMMARY

[0003] In order to solve the above technical problems, the present application provides a hot flue gas backflow method for increasing the temperature of inlet waste gas of an incinerator.

[0004] The present application provides a hot flue gas backflow method for increasing the temperature of inlet waste gas of an incinerator, which is applied to a regenerative incinerator, and the method comprises:

[0005] S1, introducing part of the purified flue gas back to the pipeline of the waste gas inlet of the regenerative incinerator through a branch pipeline connected between the purified flue gas outlet and the waste gas inlet of the regenerative incinerator;

[0006] S2, mixing the introduced part of the purified flue gas with the original waste gas;

[0007] S3, monitoring the temperature of the mixed waste gas in real time;

[0008] S4, adjusting the flow rate of the purified flue gas through the branch pipeline according to the temperature of the mixed waste gas.

[0009] Optionally,

[0010] The S3 further comprises monitoring the temperature of the combustion regenerator chamber of the regenerative incinerator in real time;

[0011] The S4 further comprises adjusting the flow rate of the purified flue gas according to the difference between the monitored temperature of the mixed waste gas and the temperature of the combustion regenerator chamber.

[0012] Optionally, the S4 further comprises:

[0013] S5, monitoring the oxygen content of the mixed waste gas at the pipeline of the waste gas inlet;

[0014] S6、when the oxygen content of the mixed exhaust gas is monitored to be lower than a set content threshold, reducing the flow rate of the purified flue gas in S1.

[0015] Optionally, S4 further comprises:

[0016] S7, monitoring the pressure difference of the branch pipeline;

[0017] S8, when the pressure difference of the branch pipeline is monitored to exceed a set pressure difference threshold, triggering a soot cleaning operation on the branch pipeline.

[0018] Optionally, the mixing step in S2 is realized by a static mixer.

[0019] Optionally, S4 further comprises:

[0020] S9, introducing compressed air into the static mixer for purging through a compressed air purging interface arranged on the static mixer.

[0021] Optionally, S1 further comprises maintaining the pressure in the branch pipeline within a target air pressure range by a rupture disc arranged in the branch pipeline.

[0022] Optionally, the inner wall of the branch pipeline is coated with a PTFE coating.

[0023] Optionally, the process of adjusting the flow rate is performed by controlling the opening degree of a pneumatic regulating valve.

[0024] The present application has the following technical effects:

[0025] The present application introduces part of the purified flue gas into the exhaust gas inlet pipeline of the regenerative incinerator to mix with the original exhaust gas, directly improving the initial temperature of the exhaust gas entering the incinerator, effectively relieving the risk of crystallization of low-temperature exhaust gas, and maintaining the smoothness of the regenerator and the stability of the system.

[0026] By monitoring the temperature of the mixed exhaust gas in real time and dynamically adjusting the flow rate, the inlet temperature is maintained in an appropriate range, avoiding excessive consumption of auxiliary fuel and preventing temperature fluctuations in the combustion chamber.

[0027] After monitoring the combustion regenerator temperature and combining the temperature difference of the mixed temperature for linkage adjustment, the uniformity of the temperature field distribution is further optimized, and the local high or low temperature area is reduced.

[0028] Monitoring the oxygen content at the mixing position and timely reducing the flow rate under low oxygen conditions ensures the sufficiency of the subsequent combustion reaction.

[0029] Real-time monitoring of the pressure difference of the branch pipeline and soot cleaning operation significantly reduces the risk of pipeline blockage.

[0030] The use of static mixers for gas mixing improves the uniformity of heat exchange, and the use of compressed air blowing effectively inhibits the accumulation of dust inside the mixer.

[0031] The rupture disc arranged in the branch pipeline maintains the pressure safety range, and the PTFE coating on the inner wall enhances the corrosion resistance.

[0032] The pneumatic control valve is used to control the opening degree for flow regulation, so that the precise and rapid control of the return flow is realized. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0034] Figure 1 A process flow diagram of a heat smoke backflow method for increasing the temperature of waste gas at the inlet of an incinerator is provided for the embodiments of the present application.

[0035] Figure 2 A structure schematic diagram of a regenerative incinerator is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0037] Figure 1 A process flow diagram of a heat smoke backflow method for increasing the temperature of waste gas at the inlet of an incinerator is provided for the embodiments of the present application, which is applied to a regenerative incinerator, and the method comprises:

[0038] S1, through the branch pipeline connected between the purified flue gas outlet and the waste gas inlet of the regenerative incinerator, part of the purified flue gas is introduced back to the pipeline of the waste gas inlet of the regenerative incinerator;

[0039] S2, the introduced part of the purified flue gas is mixed with the original waste gas;

[0040] S3, the temperature of the mixed waste gas is monitored in real time;

[0041] S4, adjusting the flow of purified flue gas through the bypass pipe according to the temperature of the mixed exhaust gas.

[0042] Figure 2 A schematic diagram of the structure of a regenerative incinerator is provided for the embodiments of the present application. Although the embodiments of the present application involve certain structures, they are more focused on improvements in methods, and therefore, the specific structure of the regenerative incinerator will not be described in detail, and only a bypass pipe is simply shown to be arranged in the regenerative incinerator. Figure 2 The regenerative incinerator 100, the purified flue gas outlet 101, the exhaust gas inlet 102, and the bypass pipe 103 are schematically shown.

[0043] During the operation of the regenerative incinerator, a specially designed bypass pipe is connected between the purified flue gas outlet and the exhaust gas inlet. The bypass pipe guides part of the purified flue gas generated after high-temperature oxidation in the combustion chamber to the area of the exhaust gas inlet pipe. The purified flue gas guided back is in contact with the low-temperature raw exhaust gas from the production link in the exhaust gas inlet pipe. The two gas streams are fully mixed in the pipe, forming mixed exhaust gas with a relatively higher temperature.

[0044] During the mixing process, the gas streams with different temperatures are uniformly mixed. The temperature state of the mixed exhaust gas can be obtained in real time through the temperature monitoring device installed on the pipe. The monitoring signal is continuously fed back to the control system.

[0045] The control system compares and analyzes the actual temperature data of the mixed exhaust gas received with the preset temperature target range. Based on the analysis result, the control system generates an adjustment instruction. The instruction acts on the flow adjustment mechanism on the bypass pipe, and controls the backflow of the purified flue gas by changing the opening and closing state of the mechanism. When the monitored temperature is lower than the target range, the backflow is increased to introduce more heat; when the temperature approaches or exceeds the upper limit of the target range, the backflow is correspondingly reduced.

[0046] The above method forms a closed-loop control loop. By continuously monitoring the mixing effect and adjusting the input proportion of hot flue gas, the temperature of the exhaust gas entering the incinerator can be actively maintained within the appropriate temperature range. This directly improves the initial temperature level of the exhaust gas before entering the regenerative chamber of the incinerator, which helps to reduce the possibility of condensable components in the exhaust gas precipitating and adhering to the surface of the regenerator at low temperature, thereby supporting the regenerator to maintain good ventilation performance. The thermal state of the entire incinerator system thus tends to be stable, reducing the phenomenon of unstable operation caused by excessively low or drastic fluctuations in the inlet temperature. This process reduces the demand for auxiliary fuel consumption while providing a guarantee for the continuous, efficient and reliable operation of the regenerative incinerator.

[0047] In some embodiments,

[0048] S3 further includes monitoring the temperature of the combustion regenerative chamber of the regenerative incinerator in real time;

[0049] S4 further comprises adjusting the purified flue gas flow rate according to the difference between the monitored temperature of the mixed exhaust gas and the temperature of the combustion regenerator.

[0050] During the operation of the regenerative incinerator, in addition to monitoring the mixed exhaust gas temperature at the exhaust gas inlet pipe, temperature sensing devices are also arranged at key positions of the combustion regenerator. These devices continuously collect temperature data of different areas in the regenerator, and after system processing, representative temperature parameters of the combustion regenerator are obtained. These temperature parameters and the mixed exhaust gas temperature signal monitored by the exhaust gas inlet pipe are transmitted synchronously to the control system.

[0051] The control system performs real-time comparison operation on the above two temperature parameters, and calculates the instantaneous temperature difference value between them. This temperature difference value is an important process control variable participating in the reflux adjustment decision. When the temperature difference value exceeds the pre-set reasonable fluctuation range, it indicates that the system thermal equilibrium state deviates. The control system will generate a targeted adjustment instruction according to the specific deviation direction and amplitude of the temperature difference.

[0052] The adjustment instruction drives the flow adjustment mechanism on the branch pipe to perform compensation action. For example, when the temperature of the combustion regenerator is significantly higher than the temperature of the mixed exhaust gas, it may indicate that the heat input at the inlet is insufficient, and the system will instruct to appropriately increase the purified flue gas flow rate; on the contrary, if the temperature of the combustion regenerator is relatively low, the flow rate may be reduced to avoid excessive cooling of the combustion zone. The entire adjustment process continues to be corrected according to the temperature difference change trend.

[0053] This scheme strengthens the temperature field regulation and control capability. By capturing the temperature correlation characteristics between the core reaction zone and the inlet preheating zone of the incinerator, the heat input and consumption demand can be more accurately balanced. This helps to reduce the temperature gradient in the axial and radial directions of the regenerator, allowing high-temperature oxidation reactions to take place in a more balanced and stable thermal environment, thereby improving the overall utilization efficiency of thermal energy and reducing the impact of local thermal stress.

[0054] In some embodiments, S4 is followed by:

[0055] S5, monitoring the oxygen content of the mixed exhaust gas at the pipe of the exhaust gas inlet;

[0056] S6, when the monitored oxygen content of the mixed exhaust gas is lower than the set content threshold, reducing the purified flue gas flow rate in S1.

[0057] An oxygen concentration monitoring device is installed at a position downstream of the mixing area of the exhaust gas inlet pipe. This device continuously detects the oxygen content in the mixed exhaust gas and transmits real-time oxygen concentration data to the control system. The control system has a set minimum oxygen content safety threshold required to maintain normal combustion.

[0058] When the monitored real-time oxygen concentration is below the safety threshold, the control system immediately determines that the current mixed gas is insufficient in combustion-supporting oxygen. At this time, the system automatically generates an adjustment instruction, which is executed in priority to other temperature adjustment signals. The instruction drives the flow adjustment mechanism on the branch pipeline to perform a reduction action, directly reducing the return flow of the purified flue gas.

[0059] Oxygen concentration monitoring is linked to return flow adjustment. Reducing the return flow reduces the proportion of high-temperature low-oxygen flue gas mixed in, prompting more fresh air to enter the system with the original exhaust gas, thereby gradually restoring the oxygen concentration level in the mixed exhaust gas. The control system continues to track the change in oxygen concentration until it rises above the safety threshold, at which point the flow restriction is removed and the normal temperature regulation mode is restored.

[0060] This oxygen content guarantee mechanism ensures combustion stability. By timely intervention in the possible oxygen deficiency state, it prevents incomplete combustion due to insufficient oxygen. This helps maintain flame stability and reaction efficiency, avoids the risk of unburned substances depositing in the regenerator or pipeline, and reduces the likelihood of the generation of incomplete combustion products such as carbon monoxide, ensuring that the exhaust flue gas meets environmental protection requirements.

[0061] In some embodiments, S4 is followed by:

[0062] S7, monitoring the pressure difference of the branch pipeline;

[0063] S8, when the monitored pressure difference of the branch pipeline exceeds a set pressure difference threshold, triggering a soot cleaning operation on the branch pipeline.

[0064] A pressure difference detection device is installed in a specific section of the branch pipeline, which continuously measures the pressure change state at both ends of the pipeline. The detection data is transmitted in real time to the control system, which has a pressure difference safety threshold set internally to represent the patency of the pipeline. When the continuous monitoring data indicates that the pressure difference exceeds the threshold, the control system automatically determines that there is an abnormally increased flow resistance inside the pipeline.

[0065] After the determination result is formed, the system immediately triggers the preset pipeline soot cleaning program. The soot cleaning instruction activates the cleaning device installed on the outside of the pipeline to execute the mechanism. The mechanism starts a physical cleaning process according to the preset program, such as through compressed air pulses or mechanical scraping, to remove the accumulated particulate matter on the inner wall of the pipeline. The soot cleaning process continues until the pressure difference detection value falls below the safety threshold.

[0066] After the soot cleaning is completed, the system automatically restores the normal monitoring state and continues to track the pressure difference trend. If the pressure difference abnormally rises again, the system will repeatedly trigger the soot cleaning action at a set period. This scheme ensures that the flow cross-section of the pipeline remains relatively stable, avoiding the phenomenon of flow attenuation or flow blockage due to continuous accumulation of ash.

[0067] This active maintenance mechanism based on differential pressure feedback significantly improves the sustainability of system operation. By timely eliminating internal flow obstacles, it ensures the smoothness of the flue gas recirculation path. This not only maintains the designed delivery capacity of the recirculation system, but also reduces the pressure fluctuations caused by local blockage, ensuring the stability of the overall gas flow distribution in the incinerator.

[0068] In some embodiments, the mixing step in S2 is achieved by a static mixer.

[0069] A static mixer device is installed in the mixing area of the exhaust gas inlet pipe. The device can be composed of multiple groups of fixed-angle guide vanes arranged regularly along the pipe axis. When the recirculated purified flue gas and the original exhaust gas enter the pipe simultaneously and flow through this area, the mixed gas flow is affected by the guide vanes and forms a complex flow pattern. The gas flow is alternately divided and changed direction, forming rotating and reverse swirling flows.

[0070] The mixing process forms a uniform temperature distribution across the pipe cross-section, eliminating local high or low temperature gas clusters. After the mixed gas flow passes through the entire vane structure of the static mixer, it reaches a state of complete heat exchange balance.

[0071] The static mixer, as a passive mixing device, does not require external power driving. Its structural design ensures that heat and mass transfer are completed within a limited pipe length. The entire mixing process is achieved solely by fluid kinetic energy, without increasing additional energy consumption.

[0072] In some embodiments, S4 is followed by:

[0073] S9, compressed air is introduced into the static mixer through a compressed air purging interface provided on the static mixer to perform purging.

[0074] The present application can also open a compressed air purging interface at a specific position of the static mixer shell. This interface is connected to the plant compressed air supply system through a pipeline. Purging operation is automatically started according to the preset time period, or manually triggered remotely by the operator. When the purging program is activated, the compressed air control valve is opened, and high-pressure gas is injected into the internal cavity of the static mixer.

[0075] The compressed air forms a high-speed turbulent flow inside the static mixer, and the gas flow sweeps along the surface of the guide vane at high speed. The high-speed gas flow generates shear force to strip the soft deposits attached to the surface of the vane and the corners. The gas flow also forms a vortex suction effect, pushing the suspended particles in the downstream direction of the pipe.

[0076] The purging process does not change the original function of the static mixer. During the operation, the exhaust gas can still flow through the static mixer normally, and the compressed air coexists with the exhaust gas in the internal for a short time but does not participate in the mixing reaction. After the purging is completed, the valve is closed, and the system returns to the normal operation state. All the loose substances stripped enter the high-temperature zone of the incinerator with the main gas stream and are decomposed.

[0077] This scheme helps to maintain the cleanliness of the guide vane surface and ensures the long-term stability of the airflow splitting and recombination efficiency.

[0078] In some embodiments, S1 further includes maintaining the pressure in the branch pipeline within a target pressure interval by a rupture disc arranged in the branch pipeline.

[0079] A rupture disc assembly is installed on the middle section of the wall of the branch pipeline. The assembly can be composed of a metal pressure-containing diaphragm and a flange sealing structure. The rupture disc serves as a safety boundary device for controlling the pressure of the pipeline and remains sealed during normal operation of the system.

[0080] When the gas pressure in the pipeline continuously rises due to abnormal conditions and reaches a critical threshold, the pressure-containing surface of the metal diaphragm plastically deforms. When the deformation exceeds the yield limit of the material, the diaphragm instantaneously breaks at the pre-set weak position. The breakage forms a directional pressure relief channel, and the high-pressure gas in the pipeline is rapidly discharged through the channel.

[0081] During the pressure relief process, the rupture disc irreversibly changes its structural state and forms a permanent pressure release port. This action quickly reduces the internal pressure of the pipeline to a safe level, preventing further pressure accumulation that may cause mechanical damage to the pipeline body or connected components. After the rupture disc fails, the system triggers an alarm signal to prompt maintenance intervention.

[0082] This effectively suppresses the risk of pipeline explosion that may be caused by sudden situations such as gas expansion, flow blockage, or combustion tempering. The controllability of the pressure relief process avoids secondary impact on surrounding equipment, ensuring the integrity of equipment in the operating area and personal safety.

[0083] In some embodiments, the inner wall of the branch pipeline is coated with a PTFE coating.

[0084] Before the overall assembly and welding of the branch pipeline are completed and before it is installed in the system, the inner surface of the pipe section needs to be pretreated with a special coating. The pretreatment includes sandblasting and rust removal treatment of the metal base to meet the specified cleanliness and roughness requirements. Then, a special spraying equipment is used to completely cover the inner wall of the pipeline with a suspension of polytetrafluoroethylene (PTFE) material. The coating is applied uniformly in multiple times, and after each application, it is cured at a specific temperature to form a dense film layer.

[0085] The final continuous coating covers the inner metal contact surface of the pipeline. The coating exhibits high chemical inertness to the acidic components, organic solvents or water vapor that may exist in the mixed gas. The surface of the coating has microscopic smoothness and presents extremely low surface adhesion when in contact with the gas flow.

[0086] After the pipeline is put into operation, the purified flue gas flowing inside continuously contacts the coating protection interface. The interaction force between the tiny ash particles or condensate droplets carried by the flue gas and the surface of the coating is weak. When the gas flow velocity fluctuates or external vibration is transmitted, the adherends are more easily stripped off.

[0087] The PTFE coating material itself does not participate in the chemical changes between the components of the flue gas and does not soften and deform under the continuous high-temperature gas passing condition. The weak deformation of the pipeline due to temperature cycling is adapted by the elasticity of the coating to avoid cracking or peeling phenomenon. Its chemical inertness can avoid the electrochemical corrosion reaction between the metal body and the complex flue gas and block the generation conditions of the corrosion products.

[0088] In some embodiments, the process of adjusting the return flow is performed by controlling the opening of the pneumatic regulating valve.

[0089] A pneumatic regulating valve is installed in the flow path of the branch pipeline as a flow control element. The pneumatic regulating valve can be rigidly connected to the pipeline system through a flange, and an axially movable valve core structure is arranged inside the valve body of the pneumatic regulating valve. The movement of the valve core changes the flow area, thereby controlling the purified flue gas flow through the pipeline. The valve actuator is equipped with a compressed air driving system, and the air source comes from the stable air supply pipe network in the plant.

[0090] The pneumatic regulating valve receives electrical signal instructions from the control system. The instructions are converted into standard air pressure signals through an electrical converter, and the air pressure intensity is in proportional correspondence with the required opening degree. The variable air pressure signal acts on the membrane cavity of the actuator to drive the push rod to produce axial displacement. The displacement amount of the push rod is transmitted to the valve core through the connecting rod mechanism, so that the valve core is accurately positioned in the valve seat.

[0091] The valve core movement process has controllable response characteristics. The position feedback device is designed inside the actuator to detect the actual displacement of the valve core in real time and feedback to the control system. The system continuously compares the feedback displacement with the target displacement and eliminates the positioning deviation by fine-tuning the air pressure signal.

[0092] The device realizes linear control of the opening degree and the flow. The special profile design of the valve core ensures that the flow rate change rate and the valve rod displacement maintain a stable proportional relationship at any opening degree state. This makes the return flow adjustment predictable and repeatable. The output thrust of the actuator overcomes the unbalanced force of the fluid on the valve core, maintaining the stability of the opening degree under the disturbance of the gas flow.

[0093] The compressed air power system provides a continuous and stable driving force. Pressure fluctuations in the air source are eliminated by a pressure stabilizing device, ensuring that the output torque of the actuator is constant. The valve maintains positioning accuracy during long-term operation, avoiding flow drift caused by actuator force decay. This driving method adapts to industrial environment vibrations and temperature changes, supporting accurate flow regulation in continuous operation conditions.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for part or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the technical solutions of the embodiments of the present application.

Claims

1. A method of increasing the temperature of the exhaust gases at the inlet of an incinerator by backflow of hot flue gases, characterized in that, The method is applied to a regenerative incinerator, and comprises the following steps: S1, introducing part of the purified flue gas back to the pipeline at the waste gas inlet of the regenerative incinerator through a branch pipeline connected between the purified flue gas outlet and the waste gas inlet of the regenerative incinerator; S2, mixing the introduced part of the purified flue gas with the original waste gas; S3, monitoring the temperature of the mixed waste gas in real time; S4, adjusting the flow of the purified flue gas through the branch pipeline according to the temperature of the mixed waste gas; The S3 further comprises monitoring the temperature of the combustion regenerative chamber of the regenerative incinerator in real time; The S4 further comprises adjusting the flow of the purified flue gas according to the difference between the monitored temperature of the mixed waste gas and the temperature of the combustion regenerative chamber; The S4 further comprises the following steps: S5, monitoring the oxygen content of the mixed waste gas at the pipeline at the waste gas inlet; S6, when the monitored oxygen content of the mixed waste gas is lower than a set content threshold, reducing the flow of the purified flue gas in the S1; The S4 further comprises the following steps: S7, monitoring the pressure difference of the branch pipeline; S8, when the monitored pressure difference of the branch pipeline exceeds a set pressure difference threshold, triggering a soot cleaning operation of the branch pipeline.

2. The method of claim 1, wherein the temperature of the exhaust gas at the inlet of the incinerator is increased by the backflow of the hot exhaust gas. The mixing step in the S2 is realized by a static mixer.

3. The method of claim 2, wherein the temperature of the exhaust gas at the inlet of the incinerator is increased by the backflow of the hot exhaust gas. The S4 further comprises the following step: S9, introducing compressed air into the static mixer through a compressed air blowing interface arranged on the static mixer to perform blowing.

4. The method of claim 1, wherein the temperature of the exhaust gas at the inlet of the incinerator is increased by the backflow of the hot exhaust gas. The S1 further comprises maintaining the pressure in the branch pipeline within a target air pressure range by a rupture disc arranged in the branch pipeline.

5. The method of claim 1, wherein the temperature of the exhaust gas at the inlet of the incinerator is increased by the backflow of the hot exhaust gas. The inner wall of the branch pipeline is coated with a PTFE coating.

6. The method of claim 1, wherein the temperature of the exhaust gas at the inlet of the incinerator is increased by the backflow of the hot exhaust gas. The process of adjusting the flow is performed by controlling the opening of a pneumatic regulating valve.

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