Asphalt processing waste gas optimization treatment system based on closed circulation

Abstract

The invention relates to the technical field of asphalt discharge control, in particular to an asphalt processing waste gas optimization treatment system based on closed circulation. The processing system comprises a data acquisition module; the data processing module is used for monitoring relevant parameters in the waste gas treatment process in real time, establishing a catalytic combustion model among reactant quantity, catalyst activity, waste gas components and temperature according to the chemical reaction principle of catalytic combustion, and calculating the reactant quantity which enables the catalytic combustion efficiency to be highest or the energy consumption to be lowest according to a particle swarm optimization algorithm; and the monitoring and control module outputs an optimal control strategy to the waste gas treatment device according to the calculation result of the data processing module, and adjusts the operation parameters of the adsorption part and the operation parameters of the catalytic combustion part. According to the asphalt processing waste gas optimization treatment system based on closed circulation, a closed circulation mode is adopted, the purification burden is reduced, the treatment efficiency is improved, and the risk of secondary pollution is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt emission control, and in particular to an asphalt processing waste gas optimization treatment system based on closed circulation. Background Art

[0002] During the production and operation of asphalt mixing equipment, pollutants such as dust and fume are generated. To improve the road performance of asphalt mixtures, the asphalt is typically heated to 140-160°C or even higher to ensure that the asphalt is evenly coated on the stone surface, forming a thick, uniform film. However, since the discharge temperature of the asphalt mixture falls within this range, the finished asphalt mixture produces a large amount of asphalt fume during processing. This fume contains a variety of toxic organic compounds, such as carbocyclic hydrocarbons, cyclic hydrocarbon derivatives, and other compounds, including polycyclic aromatic hydrocarbons (PAHs) such as benzopyrene, benzanthracene, and carbazole, posing a serious threat to public health. Furthermore, at the end of a cycle, the discharge of waste from the mixing station generates a significant amount of dust. Directly discharging this fume and dust into the atmosphere would have a serious impact on construction workers and the surrounding environment. However, existing asphalt waste gas treatment technologies cannot guarantee optimal operation at all times, resulting in low waste gas treatment efficiency.

[0003] For example, Chinese patent publication number CN209302504U, titled "An Asphalt Flue Gas Treatment System," includes: at least two flue gas treatment branches arranged in parallel; each flue gas treatment branch is equipped with a switch and a flue gas treatment module; at least one of the flue gas treatment modules in the flue gas treatment branch is used to remove flue gas, and at least one of the flue gas treatment modules in the flue gas treatment branch is used to remove dust. This asphalt flue gas treatment system can separately treat the flue gas and dust generated by the mixing station, reducing the purification burden on the treatment equipment and achieving a significant purification effect. However, the disadvantage is that it cannot guarantee that the system will always operate in an optimal state, resulting in low waste gas treatment efficiency. Summary of the Invention

[0004] In response to the problems in the prior art, the present invention provides an asphalt processing waste gas optimization treatment system based on closed circulation, which ensures that the system always operates in the optimal state, reduces the purification burden, and improves the treatment efficiency.

[0005] To achieve the above technical objectives, the present invention provides a technical solution, which is an optimized treatment system for asphalt processing waste gas based on a closed cycle, connected to a waste gas treatment device, wherein the waste gas treatment device includes an adsorption unit, a catalytic combustion unit, and a multi-stage waste gas purification unit. The treatment system includes: A data acquisition module is connected to the exhaust gas treatment device and is used to monitor the exhaust gas composition, temperature, pressure and flow rate before entering and after passing through the exhaust gas treatment device in real time; The data processing module monitors relevant parameters in the exhaust gas treatment process in real time. Based on the chemical reaction principle of catalytic combustion, it establishes a catalytic combustion model that relates reactant quantity to catalyst activity, exhaust gas composition, and temperature. Using the particle swarm optimization algorithm, it calculates the reactant quantity that maximizes catalytic combustion efficiency or minimizes energy consumption. The monitoring and control module outputs the optimal control strategy to the exhaust gas treatment device according to the calculation results of the data processing module, and adjusts the operating parameters of the adsorption part and the operating parameters of the catalytic combustion part.

[0006] In this technical solution, the system is closely integrated with the exhaust gas treatment device, ensuring it always operates at optimal conditions, significantly reducing the purification burden and improving exhaust gas treatment efficiency. The exhaust gas treatment device integrates an adsorption unit, a catalytic combustion unit, and a multi-stage exhaust gas purification unit, providing a solid foundation for comprehensive and efficient exhaust gas treatment. The data acquisition module monitors the composition, temperature, pressure, and flow rate of exhaust gas before and after treatment in real time, providing critical data support for precise control. The data processing module monitors these key parameters in real time and, based on the chemical reaction principles of catalytic combustion, establishes a precise catalytic combustion model that correlates reactant quantities with catalyst activity, exhaust gas composition, and temperature. Using an advanced particle swarm optimization algorithm, this module accurately calculates the reactant quantities that maximize catalytic combustion efficiency or minimize energy consumption, thereby optimizing the exhaust gas treatment process. Based on the data processing module's calculations, the monitoring and control module outputs the optimized control strategy to the exhaust gas treatment device, intelligently adjusting the operating parameters of the adsorption and catalytic combustion units. This not only ensures the system always operates at optimal conditions, but also effectively reduces the purification burden and significantly improves exhaust gas treatment efficiency.

[0007] The present invention further comprises the following configurations: the adsorption unit utilizes a porous adsorption material to adsorb harmful substances in the exhaust gas; the catalytic combustion unit introduces the desorbed exhaust gas into a catalytic combustion chamber for low-temperature combustion using a catalyst; and the multi-stage exhaust gas purification unit subjects the exhaust gas after low-temperature combustion to wet dust removal, desulfurization, and denitrification. The adsorption unit cleverly utilizes the porous adsorption material to efficiently adsorb harmful substances in the exhaust gas, effectively removing the majority of pollutants. Subsequently, the catalytic combustion unit introduces the desorbed exhaust gas into the catalytic combustion chamber for low-temperature combustion using a highly efficient catalyst, further decomposing the harmful substances in the exhaust gas while significantly reducing energy consumption and treatment costs. Finally, the multi-stage exhaust gas purification unit subjects the exhaust gas after low-temperature combustion to wet dust removal, desulfurization, and denitrification, thoroughly removing all pollutants from the exhaust gas and ensuring clean and environmentally friendly exhaust emissions. This series of processing steps works in synergy to achieve efficient, comprehensive, and environmentally friendly exhaust gas treatment.

[0008] The present invention is further configured as follows: the adjustment of the operating parameters of the adsorption unit includes: Use heating or cooling devices to pre-treat the gas, control the temperature of the gas entering the adsorption part, and take the temperature point with the highest adsorption efficiency as the optimal adsorption temperature; Adjust the adsorption time of the adsorption part, calculate the optimal adsorption time and apply it.

[0009] In this technical solution, the system pre-treats the gas entering the adsorption unit using a heating or cooling device. By precisely controlling the gas temperature, the system ensures maximum adsorption efficiency, thereby determining the optimal adsorption temperature. Furthermore, the system adjusts the adsorption time in the adsorption unit to achieve optimal adsorption results, and this optimal adsorption time is applied to the actual treatment process. These adjustments collectively improve the treatment efficiency of the adsorption unit and lay a solid foundation for the efficient operation of the entire waste gas optimization treatment system.

[0010] The present invention is further configured as follows: calculating the optimal adsorption time includes: Set a constant exhaust gas flow rate and concentration, and start to continuously introduce exhaust gas into the adsorption part; Regularly collect exhaust gas samples from the gas outflow detection unit, and draw a first penetration curve based on the change of exhaust gas component concentration over time; determining the penetration time according to the inflection point of the first penetration curve; According to the adsorption kinetics model, the data of the change of exhaust gas component concentration over time is fitted, and the iterative optimization is carried out to calculate the optimal adsorption time.

[0011] In this technical solution, by setting a constant exhaust gas flow rate and concentration, and starting to continuously pass the exhaust gas into the adsorption part, stable basic data is provided for calculating the optimal adsorption time. By regularly collecting exhaust gas samples from the gas outflow detection unit, the system can grasp the changes in the exhaust gas component concentration over time in real time, and draw the first penetration curve accordingly. According to the inflection point of this curve, the system can accurately determine the exhaust gas penetration time, that is, the time point when the exhaust gas begins to penetrate the adsorption material. Furthermore, the system uses the adsorption kinetics model to fit the data on the changes in the exhaust gas component concentration over time, and continuously calculates and adjusts through the iterative optimization algorithm to finally obtain the optimal adsorption time. This sophisticated calculation process ensures that the adsorption part can perform efficient adsorption within the optimal time range, thereby further improving the treatment efficiency and effect of the entire exhaust gas treatment system.

[0012] The present invention is further configured as follows: fitting the data of the change of exhaust gas component concentration over time according to the adsorption kinetics model, iteratively optimizing and calculating the optimal adsorption time includes: Acquire spectral images of the catalytic combustion chamber; Denoise, enhance and correct the spectral image, and convert the spectral image into a grayscale image; According to the image processing algorithm, the spectral band intensity, texture pattern and shape parameters are extracted from the grayscale image and input into the learning unit of the adsorption kinetics model; According to the exhaust gas component concentration predicted in real time by the adsorption kinetics model, a second breakthrough curve is drawn and compared with the first breakthrough curve; based on the comparison results, the adsorption kinetics model is iteratively optimized.

[0013] In this technical solution, the system first collects spectral images of the catalytic combustion chamber to obtain spectral information. Subsequently, the collected spectral images are denoised, enhanced and corrected, and further converted into grayscale images for subsequent image processing and analysis. By applying image processing algorithms, the system can accurately extract key information such as spectral band intensity, texture patterns and shape parameters from the grayscale images, and input this information into the learning unit of the adsorption kinetic model. Based on this information, the adsorption kinetic model can predict the concentration of exhaust gas components in real time and draw a second penetration curve accordingly. By comparing the second penetration curve with the first penetration curve drawn experimentally, the system can evaluate the prediction accuracy of the model and iteratively optimize the adsorption kinetic model based on the comparison results. This ensures that the system can continuously learn and improve, and ultimately calculate the optimal adsorption time, providing a more accurate and efficient solution for exhaust gas treatment.

[0014] The present invention is further configured such that: the iterative optimization includes: if there is a deviation between the second breakthrough curve and the first breakthrough curve, readjusting the adsorption kinetic model parameters and fitting again.

[0015] In this technical solution, when the system detects a deviation between the second breakthrough curve predicted by the adsorption kinetics model and the first breakthrough curve drawn experimentally, this means that the current model parameters may not be completely accurate or applicable. To address this issue, the system will readjust the parameters of the adsorption kinetics model and refit it in order to obtain more accurate prediction results. This iterative optimization process ensures that the system can continuously adapt and improve, gradually reducing the deviation between prediction and reality, thereby more accurately calculating the optimal adsorption time. This makes the system more flexible and accurate in treating asphalt processing waste gas, providing strong support for more efficient waste gas treatment.

[0016] The present invention is further configured as follows: the adjusting catalytic combustion unit includes: Preheat the exhaust gas entering the catalytic combustion chamber, calculate and apply the optimal catalytic combustion temperature based on the exhaust gas composition, temperature and catalyst performance; The flow of air and exhaust gas entering the catalytic combustion chamber is controlled, and the optimal air-fuel ratio is calculated and applied based on the exhaust gas composition, the temperature of the catalytic combustion chamber and the required reaction temperature.

[0017] In this technical solution, the system first preheats the exhaust gas entering the catalytic combustion chamber, which helps to improve the efficiency of catalytic combustion. Then, the system will accurately calculate the optimal catalytic combustion temperature based on the composition and temperature of the exhaust gas and the performance of the catalyst, and apply it to the actual treatment process to ensure that catalytic combustion can be carried out under optimal conditions. The system will also strictly control the flow of air and exhaust gas entering the catalytic combustion chamber. By comprehensively considering the exhaust gas composition, the temperature of the catalytic combustion chamber and the required reaction temperature, the system will calculate the optimal air-fuel ratio and apply it to the actual treatment. It helps to ensure that the oxygen supply in the catalytic combustion process is sufficient and reasonable, thereby further improving the exhaust gas treatment efficiency. Adjusting the strategy of the catalytic combustion unit gives the system greater flexibility and accuracy in treating asphalt processing exhaust gas, and can adjust the treatment parameters in real time according to the actual situation of the exhaust gas to achieve more efficient and environmentally friendly exhaust gas treatment effects.

[0018] The present invention is further configured such that: an automatic desorption structure is provided in the adsorption portion for heating and desorption when the porous adsorption material is saturated with adsorption, and recovering the desorbed harmful substances.

[0019] In this technical solution, the system has the ability to automatically desorb when the adsorption material reaches a saturated state, ensuring that the adsorption unit can continue to work effectively without manual intervention, thereby improving the system's automation level and operating efficiency. It emphasizes that the desorption process not only removes harmful substances from the adsorption material, but also enables the recovery of these substances. This reflects that while the system treats waste gas, it also focuses on the recycling and utilization of resources, in line with the concepts of environmental protection and sustainable development. As part of the entire closed-loop treatment system, the setting of the automatic desorption structure further optimizes the treatment capacity of the entire system, ensures the continuity and efficiency of the waste gas treatment process, reduces the discharge of harmful substances, and protects the environment.

[0020] The present invention is further configured as follows: the treatment system also includes a recovery module, the recovery module includes an energy recovery unit and a condensation recovery unit, the energy recovery unit is used to recover the heat energy generated during the treatment process, and the condensation recovery unit is used to recover condensable substances in the treated exhaust gas.

[0021] A closed-cycle asphalt processing waste gas optimization treatment method, applied to a closed-cycle asphalt processing waste gas optimization treatment system, comprises the following steps: Centralized collection of waste gas generated during asphalt processing; The gas inflow detection unit monitors the exhaust gas composition, temperature, pressure and flow rate entering the exhaust gas treatment device in real time; The exhaust gas is sequentially subjected to adsorption treatment, catalytic combustion treatment and multi-stage exhaust gas purification treatment; Recover the waste gas after being treated by the waste gas treatment device through the recovery module; The gas outflow detection unit is used to monitor the composition, temperature, pressure and flow of the exhaust gas after being treated by the exhaust gas treatment device in real time. The monitoring and control module is used to monitor the relevant parameters in the exhaust gas treatment process in real time, calculate the optimal amount of reactants based on the monitored relevant parameters, and adjust the operating parameters of the adsorption part and catalytic combustion part.

[0022] In this technical solution, the use of a closed-loop system means that waste gas is confined within a circulation system during the treatment process. This helps reduce waste gas emissions, thereby reducing the burden on the purification system. Because waste gas is treated multiple times within the closed-loop system, treatment efficiency is improved. Because waste gas is treated within the closed-loop system rather than being released directly into the atmosphere, secondary pollution to the environment is reduced.

[0023] The beneficial effects of the present invention are as follows: (1) the system is guaranteed to operate in an optimal state at all times, the purification burden is reduced, and the treatment efficiency is improved; (2) the system is closely connected with the exhaust gas treatment device, ensuring that the system is always operating in an optimal state, significantly reducing the purification burden and improving the exhaust gas treatment efficiency. The exhaust gas treatment device integrates an adsorption unit, a catalytic combustion unit and a multi-stage exhaust gas purification treatment unit, providing a solid foundation for comprehensive and efficient exhaust gas treatment. The data acquisition module can monitor the composition, temperature, pressure and flow of the exhaust gas before entering the treatment device and after treatment in real time, providing key data support for precise control. The data processing module monitors these key parameters in real time and establishes a precise catalytic combustion model between the reactant amount and the catalyst activity, exhaust gas composition and temperature based on the chemical reaction principle of catalytic combustion. By using an advanced particle swarm optimization algorithm, the module can accurately calculate the reactant amount that maximizes the catalytic combustion efficiency or minimizes the energy consumption, thereby achieving the optimization of the exhaust gas treatment process. Based on the calculation results of the data processing module, the monitoring and control module outputs the optimized control strategy to the exhaust gas treatment device and intelligently adjusts the operating parameters of the adsorption unit and the catalytic combustion unit. It not only ensures that the system always maintains the best operating condition, but also effectively reduces the purification burden and significantly improves the efficiency of exhaust gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a flow chart of the closed-loop asphalt processing waste gas optimization treatment method of the present invention. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific implementation method described herein is only an optimal embodiment of the present invention, which is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] like Figure 1 As shown in the figure, as a first embodiment of the present invention, an asphalt processing waste gas optimization treatment system based on a closed cycle is connected to a waste gas treatment device, the waste gas treatment device includes an adsorption part, a catalytic combustion part and a multi-stage waste gas purification treatment part, and the treatment system includes: A data acquisition module is connected to the exhaust gas treatment device and is used to monitor the exhaust gas composition, temperature, pressure and flow rate before entering and after passing through the exhaust gas treatment device in real time; The data processing module monitors relevant parameters in the exhaust gas treatment process in real time. Based on the chemical reaction principle of catalytic combustion, it establishes a catalytic combustion model that relates reactant quantity to catalyst activity, exhaust gas composition, and temperature. Using the particle swarm optimization algorithm, it calculates the reactant quantity that maximizes catalytic combustion efficiency or minimizes energy consumption. The monitoring and control module outputs the optimal control strategy to the exhaust gas treatment device according to the calculation results of the data processing module, and adjusts the operating parameters of the adsorption part and the operating parameters of the catalytic combustion part.

[0027] In this embodiment, the system is closely connected to the exhaust gas treatment device, ensuring it always operates at optimal conditions, significantly reducing the purification burden and improving exhaust gas treatment efficiency. The exhaust gas treatment device integrates an adsorption unit, a catalytic combustion unit, and a multi-stage exhaust gas purification unit, providing a solid foundation for comprehensive and efficient exhaust gas treatment. The data acquisition module monitors the composition, temperature, pressure, and flow rate of exhaust gas before and after treatment in real time, providing critical data support for precise control. The data processing module monitors these key parameters in real time and, based on the chemical reaction principles of catalytic combustion, establishes a precise catalytic combustion model that correlates reactant quantities with catalyst activity, exhaust gas composition, and temperature. Using an advanced particle swarm optimization algorithm, this module accurately calculates the reactant quantities that maximize catalytic combustion efficiency or minimize energy consumption, thereby optimizing the exhaust gas treatment process. Based on the data processing module's calculations, the monitoring and control module outputs the optimized control strategy to the exhaust gas treatment device, intelligently adjusting the operating parameters of the adsorption and catalytic combustion units. This not only ensures the system always operates at optimal conditions, but also effectively reduces the purification burden and significantly improves exhaust gas treatment efficiency.

[0028] It can be understood that relevant parameters include exhaust gas composition, temperature, pressure, and flow rate to ensure treatment effect and stable operation of the system.

[0029] In one embodiment of the present invention, the adsorption unit utilizes a porous adsorption material to adsorb harmful substances in the exhaust gas. The catalytic combustion unit introduces the desorbed exhaust gas into a catalytic combustion chamber for low-temperature combustion using a catalyst. The multi-stage exhaust gas purification unit then subjects the exhaust gas after low-temperature combustion to wet dust removal, desulfurization, and denitrification. The adsorption unit cleverly utilizes the porous adsorption material to efficiently adsorb harmful substances in the exhaust gas, effectively removing the majority of pollutants. Subsequently, the catalytic combustion unit introduces the desorbed exhaust gas into the catalytic combustion chamber for low-temperature combustion using a highly efficient catalyst, further decomposing the harmful substances in the exhaust gas while significantly reducing energy consumption and treatment costs. Finally, the multi-stage exhaust gas purification unit subjects the exhaust gas after low-temperature combustion to wet dust removal, desulfurization, and denitrification, thoroughly removing all pollutants from the exhaust gas and ensuring clean and environmentally friendly exhaust emissions. This series of processing steps works in synergy to achieve efficient, comprehensive, and environmentally friendly exhaust gas treatment.

[0030] Preferably, the porous adsorption material is activated carbon.

[0031] In one embodiment of the present invention, adjusting the operating parameters of the adsorption unit includes: Use heating or cooling devices to pre-treat the gas, control the temperature of the gas entering the adsorption part, and take the temperature point with the highest adsorption efficiency as the optimal adsorption temperature; Adjust the adsorption time of the adsorption part, calculate the optimal adsorption time and apply it.

[0032] In this technical solution, the system pre-treats the gas entering the adsorption unit using a heating or cooling device. By precisely controlling the gas temperature, the system ensures maximum adsorption efficiency, thereby determining the optimal adsorption temperature. Furthermore, the system adjusts the adsorption time in the adsorption unit to achieve optimal adsorption results, and this optimal adsorption time is applied to the actual treatment process. These adjustments collectively improve the treatment efficiency of the adsorption unit and lay a solid foundation for the efficient operation of the entire waste gas optimization treatment system.

[0033] In one embodiment of the present invention, calculating the optimal adsorption time includes: Set a constant exhaust gas flow rate and concentration, and start to continuously introduce exhaust gas into the adsorption part; Regularly collect exhaust gas samples from the gas outflow detection unit, and draw a first penetration curve based on the change of exhaust gas component concentration over time; determining the penetration time according to the inflection point of the first penetration curve; According to the adsorption kinetics model, the data of the change of exhaust gas component concentration over time is fitted, and the iterative optimization is carried out to calculate the optimal adsorption time.

[0034] In this technical solution, by setting a constant exhaust gas flow rate and concentration, and starting to continuously pass the exhaust gas into the adsorption part, stable basic data is provided for calculating the optimal adsorption time. By regularly collecting exhaust gas samples from the gas outflow detection unit, the system can grasp the changes in the concentration of exhaust gas components over time in real time, and draw the first penetration curve accordingly. According to the inflection point of this curve, the system can accurately determine the penetration time of the exhaust gas, that is, the time point when the exhaust gas begins to penetrate the adsorption material. Furthermore, the system uses the adsorption kinetics model to fit the data on the changes in the concentration of exhaust gas components over time, and continuously calculates and adjusts through the iterative optimization algorithm to finally obtain the optimal adsorption time. This sophisticated calculation process ensures that the adsorption part can perform efficient adsorption within the optimal time range, thereby further improving the treatment efficiency and effect of the entire exhaust gas treatment system.

[0035] It is understandable that, considering the economy and efficiency in practical applications, the optimal adsorption time is usually selected to be 80% or 90% of the breakthrough time.

[0036] In one embodiment of the present invention, fitting the data of the change of exhaust gas component concentration over time according to the adsorption kinetics model, iteratively optimizing and calculating the optimal adsorption time includes: Acquire spectral images of the catalytic combustion chamber; Denoise, enhance and correct the spectral image, and convert the spectral image into a grayscale image; According to the image processing algorithm, the spectral band intensity, texture pattern and shape parameters are extracted from the grayscale image and input into the learning unit of the adsorption kinetics model; According to the exhaust gas component concentration predicted in real time by the adsorption kinetics model, a second breakthrough curve is drawn and compared with the first breakthrough curve; based on the comparison results, the adsorption kinetics model is iteratively optimized.

[0037] In this technical solution, the system first collects spectral images of the catalytic combustion chamber to obtain spectral information. Subsequently, the collected spectral images are denoised, enhanced and corrected, and further converted into grayscale images for subsequent image processing and analysis. By applying image processing algorithms, the system can accurately extract key information such as spectral band intensity, texture patterns and shape parameters from the grayscale images, and input this information into the learning unit of the adsorption kinetic model. Based on this information, the adsorption kinetic model can predict the concentration of exhaust gas components in real time and draw a second penetration curve accordingly. By comparing the second penetration curve with the first penetration curve drawn experimentally, the system can evaluate the prediction accuracy of the model and iteratively optimize the adsorption kinetic model based on the comparison results. This ensures that the system can continuously learn and improve, and ultimately calculate the optimal adsorption time, providing a more accurate and efficient solution for exhaust gas treatment.

[0038] Preferably, the iterative optimization includes: if there is a deviation between the second penetration curve and the first penetration curve, readjusting the adsorption kinetic model parameters and fitting again. When the system finds that there is a deviation between the second penetration curve predicted by the adsorption kinetic model and the first penetration curve drawn by the experiment, this means that the current model parameters may not be completely accurate or applicable. In order to solve this problem, the system will readjust the parameters of the adsorption kinetic model and fit it again in order to obtain more accurate prediction results. This iterative optimization process ensures that the system can continuously adapt and improve, gradually reducing the deviation between the prediction and the actual, so as to more accurately calculate the optimal adsorption time. This makes the system more flexible and accurate in treating asphalt processing waste gas, and provides strong support for more efficient waste gas treatment.

[0039] The adjusting catalytic combustion unit comprises: Preheat the exhaust gas entering the catalytic combustion chamber, calculate and apply the optimal catalytic combustion temperature based on the exhaust gas composition, temperature and catalyst performance; The flow of air and exhaust gas entering the catalytic combustion chamber is controlled, and the optimal air-fuel ratio is calculated and applied based on the exhaust gas composition, the temperature of the catalytic combustion chamber and the required reaction temperature.

[0040] In this technical solution, the system first preheats the exhaust gas entering the catalytic combustion chamber, which helps to improve the efficiency of catalytic combustion. Then, the system will accurately calculate the optimal catalytic combustion temperature based on the composition and temperature of the exhaust gas and the performance of the catalyst, and apply it to the actual treatment process to ensure that catalytic combustion can be carried out under optimal conditions. The system will also strictly control the flow of air and exhaust gas entering the catalytic combustion chamber. By comprehensively considering the exhaust gas composition, the temperature of the catalytic combustion chamber and the required reaction temperature, the system will calculate the optimal air-fuel ratio and apply it to the actual treatment. It helps to ensure that the oxygen supply in the catalytic combustion process is sufficient and reasonable, thereby further improving the exhaust gas treatment efficiency. Adjusting the strategy of the catalytic combustion unit gives the system greater flexibility and accuracy in treating asphalt processing exhaust gas, and can adjust the treatment parameters in real time according to the actual situation of the exhaust gas to achieve more efficient and environmentally friendly exhaust gas treatment effects.

[0041] As can be understood, the amount of reactants is calculated by the following formula: Where R is the amount of reactants, E is the catalytic combustion efficiency, k c is the catalytic combustion rate constant, T is the catalytic combustion temperature, C cat is the catalyst activity, f(T) is a function of temperature T, and represents the effect of temperature on the catalytic combustion efficiency.

[0042] Solution At this time, the optimal amount of reactant R opt .

[0043] This formula is used to optimize the catalytic combustion process by adjusting the amount of reactants to maximize combustion efficiency, thereby saving energy and reducing emissions.

[0044] As you can understand, the particle swarm optimization algorithm is used to calculate the reactant quantities that maximize catalytic combustion efficiency or minimize energy consumption. Specifically, a swarm of particles is randomly generated, with each particle representing a possible solution, namely, a set of reactant quantities. Each particle has two attributes: position and velocity. The position indicates the current solution, and the velocity indicates the direction of change in the solution. Based on the chemical reaction principles of catalytic combustion, a catalytic combustion model is established that relates the reactant quantities to catalyst activity, exhaust gas composition, and temperature. The catalytic combustion model is used to evaluate the fitness of each particle, namely, the catalytic combustion efficiency or energy consumption. Each particle updates its velocity and position based on its own experience and the experience of the swarm. The particle's new velocity consists of three components: the current velocity, a self-aware component (based on the particle's historical optimal position), and a social component (based on the swarm's historical optimal position). The particle updates its position based on the new velocity, generating a new solution. The steps of evaluating particles and updating their velocities and positions are repeated until a stopping condition is met (such as reaching a maximum number of iterations or a fitness threshold). In each iteration, the particle's historical optimal position and the swarm's historical optimal position are recorded and updated. The calculated optimal reactant amount is applied to the actual catalytic combustion process to achieve the highest catalytic combustion efficiency or the lowest energy consumption.

[0045] Preferably, the adsorption section is provided with an automatic desorption structure for heating and desorption when the porous adsorption material is saturated with adsorption, and recovering the desorbed harmful substances. The system has the ability to automatically desorb when the adsorption material reaches a saturated state, ensuring that the adsorption section can continue to work effectively without manual intervention, thereby improving the automation level and operating efficiency of the system. It emphasizes that the desorption process not only removes harmful substances on the adsorption material, but also enables the recovery of these substances. It reflects that while the system treats waste gas, it also pays attention to the recycling and utilization of resources, which is in line with the concepts of environmental protection and sustainable development. As part of the entire closed-loop treatment system, the setting of the automatic desorption structure further optimizes the treatment capacity of the entire system, ensures the continuity and efficiency of the waste gas treatment process, reduces the discharge of harmful substances, and protects the environment.

[0046] The recovery module includes an energy recovery unit and a condensation recovery unit. The energy recovery unit is used to recover heat energy generated during the treatment process, and the condensation recovery unit is used to recover condensable substances in the treated exhaust gas.

[0047] like Figure 1 As shown in the second embodiment of the present invention, a closed-cycle-based asphalt processing waste gas optimization treatment method is applied to a closed-cycle-based asphalt processing waste gas optimization treatment system, comprising the following steps: Centralized collection of waste gas generated during asphalt processing; The gas inflow detection unit monitors the exhaust gas composition, temperature, pressure and flow rate entering the exhaust gas treatment device in real time; The exhaust gas is sequentially subjected to adsorption treatment, catalytic combustion treatment and multi-stage exhaust gas purification treatment; Recover the waste gas after being treated by the waste gas treatment device through the recovery module; The gas outflow detection unit is used to monitor the composition, temperature, pressure and flow of the exhaust gas after being treated by the exhaust gas treatment device in real time. The monitoring and control module is used to monitor the relevant parameters in the exhaust gas treatment process in real time, calculate the optimal amount of reactants based on the monitored relevant parameters, and adjust the operating parameters of the adsorption part and catalytic combustion part.

[0048] In this technical solution, the use of a closed-loop system means that waste gas is confined within a circulation system during the treatment process. This helps reduce waste gas emissions, thereby reducing the burden on the purification system. Because waste gas is treated multiple times within the closed-loop system, treatment efficiency is improved. Because waste gas is treated within the closed-loop system rather than being released directly into the atmosphere, secondary pollution to the environment is reduced.

[0049] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. An asphalt processing waste gas optimization treatment system based on closed circulation, connected to a waste gas treatment device, characterized in that: The exhaust gas treatment device includes an adsorption part, a catalytic combustion part and a multi-stage exhaust gas purification treatment part, and the treatment system includes: A data acquisition module is connected to the exhaust gas treatment device and is used to monitor the exhaust gas composition, temperature, pressure and flow rate before entering and after passing through the exhaust gas treatment device in real time; The data processing module monitors relevant parameters in the exhaust gas treatment process in real time. Based on the chemical reaction principle of catalytic combustion, it establishes a catalytic combustion model that relates reactant quantity to catalyst activity, exhaust gas composition, and temperature. Using the particle swarm optimization algorithm, it calculates the reactant quantity that maximizes catalytic combustion efficiency or minimizes energy consumption. The monitoring and control module outputs the optimal control strategy to the exhaust gas treatment device according to the calculation results of the data processing module, and adjusts the operating parameters of the adsorption part and the operating parameters of the catalytic combustion part.

2. The asphalt processing waste gas optimization treatment system based on closed cycle according to claim 1 is characterized in that: The adsorption part uses porous adsorption materials to adsorb harmful substances in the exhaust gas, the catalytic combustion part introduces the desorbed exhaust gas into the catalytic combustion chamber, and uses a catalyst to perform low-temperature combustion treatment, and the multi-stage exhaust gas purification treatment part performs wet dust removal treatment, desulfurization treatment and denitrification treatment on the exhaust gas after low-temperature combustion treatment.

3. The asphalt processing waste gas optimization treatment system based on closed cycle according to claim 1 is characterized in that: The adjustment of the operating parameters of the adsorption unit includes: Use heating or cooling devices to pre-treat the gas, control the temperature of the gas entering the adsorption part, and take the temperature point with the highest adsorption efficiency as the optimal adsorption temperature; Adjust the adsorption time of the adsorption part, calculate the optimal adsorption time and apply it.

4. The asphalt processing waste gas optimization treatment system based on closed cycle according to claim 3 is characterized in that: The data acquisition module includes a gas inflow detection unit and a gas outflow detection unit, and the calculation of the optimal adsorption time includes: setting a constant waste gas flow rate and concentration, and starting to continuously introduce waste gas into the adsorption part; Regularly collect exhaust gas samples from the gas outflow detection unit, and draw a first penetration curve based on the change of exhaust gas component concentration over time; determining the penetration time according to the inflection point of the first penetration curve; According to the adsorption kinetics model, the data of the change of exhaust gas component concentration over time is fitted, and the iterative optimization is carried out to calculate the optimal adsorption time.

5. The asphalt processing waste gas optimization treatment system based on closed cycle according to claim 4 is characterized in that: The method of fitting the data of the change of exhaust gas component concentration over time according to the adsorption kinetics model, iteratively optimizing and calculating the optimal adsorption time includes: Acquire spectral images of the catalytic combustion chamber; Denoise, enhance and correct the spectral image, and convert the spectral image into a grayscale image; According to the image processing algorithm, the spectral band intensity, texture pattern and shape parameters are extracted from the grayscale image and input into the learning unit of the adsorption kinetics model; According to the exhaust gas component concentration predicted in real time by the adsorption kinetics model, a second breakthrough curve is drawn and compared with the first breakthrough curve; based on the comparison results, the adsorption kinetics model is iteratively optimized.

6. The asphalt processing waste gas optimization treatment system based on closed cycle according to claim 5 is characterized in that: The iterative optimization includes: if there is a deviation between the second breakthrough curve and the first breakthrough curve, readjusting the adsorption kinetic model parameters and fitting again.

7. The asphalt processing waste gas optimization treatment system based on closed cycle according to claim 1 is characterized in that: The adjusting catalytic combustion unit comprises: Preheat the exhaust gas entering the catalytic combustion chamber, calculate and apply the optimal catalytic combustion temperature based on the exhaust gas composition, temperature and catalyst performance; The flow of air and exhaust gas entering the catalytic combustion chamber is controlled, and the optimal air-fuel ratio is calculated and applied based on the exhaust gas composition, the temperature of the catalytic combustion chamber and the required reaction temperature.

8. The asphalt processing waste gas optimization treatment system based on closed cycle according to claim 1 is characterized in that: The adsorption part is provided with an automatic desorption structure for heating and desorption when the porous adsorption material is saturated with adsorption, and recovering the desorbed harmful substances.

9. The asphalt processing waste gas optimization treatment system based on closed cycle according to claim 1 is characterized in that: The treatment system further includes a recovery module, which includes an energy recovery unit and a condensation recovery unit. The energy recovery unit is used to recover heat energy generated during the treatment process, and the condensation recovery unit is used to recover condensable substances in the treated exhaust gas.

10. A closed-cycle asphalt processing waste gas optimization treatment method, applied to the closed-cycle asphalt processing waste gas optimization treatment system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Centralized collection of waste gas generated during asphalt processing; The gas inflow detection unit monitors the exhaust gas composition, temperature, pressure and flow rate entering the exhaust gas treatment device in real time; The exhaust gas is sequentially subjected to adsorption treatment, catalytic combustion treatment and multi-stage exhaust gas purification treatment; Recover the waste gas after being treated by the waste gas treatment device through the recovery module; The gas outflow detection unit is used to monitor the composition, temperature, pressure and flow of the exhaust gas after being treated by the exhaust gas treatment device in real time. The monitoring and control module is used to monitor the relevant parameters in the exhaust gas treatment process in real time, calculate the optimal amount of reactants based on the monitored relevant parameters, and adjust the operating parameters of the adsorption part and catalytic combustion part.

Images