A Process Control Method and System for Hydrogen Production by Garbage Carbonization

Abstract

The present invention relates to the field of solid waste treatment, and specifically to a process control method and system for hydrogen production by garbage carbonization. Based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process of dry garbage, the conveying state of pyrolysis oil and gas to the gas furnace is adjusted; based on the high-temperature flue gas output data of the gas furnace, the combustion state characteristics of pyrolysis oil and gas in the gas furnace are estimated, and the combustion auxiliary operation of pyrolysis oil and gas in the gas furnace is adjusted; based on the medium-temperature flue gas output data from the anaerobic pyrolysis process to the drying process, the drying environment characteristics of the drying process are determined, the drying state information of the garbage entering the furnace in the drying process is predicted, and the conveying state of the medium-temperature flue gas to the drying process is adjusted; based on the screening state data of the bio-carbon powder generated by the anaerobic pyrolysis process in the thermal sorting process, the carbon powder screening characteristics of the thermal sorting process are determined, and the screening operation state and discharging operation state of the bio-carbon powder are adjusted. The present invention can achieve harmless green treatment of domestic waste with low energy consumption and low carbon emissions.

Description

Technical Field

[0001] The present invention relates to the field of solid waste treatment, and in particular, to a process control method and system for hydrogen production by garbage carbonization. Background Art

[0002] Domestic waste has become the main source of solid waste. With the continuous improvement of residents' living standards, the output of domestic waste has also shown an increasing trend year by year. The existing treatment methods for domestic waste mainly include landfill and incineration. Among them, landfill of domestic waste not only occupies a large amount of land resources, but also pollutes the soil and groundwater, causing land resource safety problems. Although incineration of domestic waste can be used for power generation, toxic gases such as dioxins generated during the incineration process will pollute the atmospheric environment. It can be seen that both landfill and incineration of domestic waste will pollute the natural environment. Therefore, harmless and green treatment of domestic waste, as well as renewable energy conversion of domestic waste in a low-pollution manner, are important development directions for future domestic waste and even solid waste treatment.

[0003] Currently, there has emerged a process for carbonizing and gasifying domestic waste to produce hydrogen. For example, the authorized patent ZL202310529013.7 (publication number CN116554931B) adopts processes such as ripening and dehydrating domestic waste, drying, oxygen-free pyrolysis, thermal sorting, carbon powder gasification and purification to synthesize and extract high-purity hydrogen, realizing the harmless and green treatment of domestic waste, as well as converting and obtaining renewable energy such as hydrogen, improving the recycling efficiency of domestic waste and avoiding environmental pollution caused by treating domestic waste using the above conventional methods. Among them, the process flow of the above authorized patent is as Figure 1 shown, which will not be introduced in detail here. The processes such as drying, oxygen-free pyrolysis, and thermal sorting in the above authorized patent have a crucial impact on the hydrogen production efficiency. How to further optimize and improve these processes is of great significance for reducing energy consumption and carbon emissions during hydrogen production and improving hydrogen production efficiency. Summary of the Invention

[0004] In order to optimize and improve the implementation operations of processes such as drying, oxygen-free pyrolysis, and thermal sorting during the process of carbonizing and gasifying domestic waste to produce hydrogen, enable efficient heat recycling between different processes, and efficiently dry and dehydrate domestic waste and its treatment products for carbonization conversion, and achieve low-energy consumption, low-carbon emission, harmless and green treatment of domestic waste, the present invention provides a process control method for hydrogen production by garbage carbonization, and the method includes the following steps:

[0005] Based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process for dry garbage, adjust the conveying state of the pyrolysis oil and gas to the gas furnace; based on the high-temperature flue gas output data of the gas furnace, estimate the combustion state characteristics of the pyrolysis oil and gas in the gas furnace, and thus adjust the combustion auxiliary operation of the pyrolysis oil and gas in the gas furnace.

[0006] Based on the medium-temperature flue gas output data of the anaerobic pyrolysis process to the drying process, determine the drying environment characteristics of the drying process; based on the drying environment characteristics, predict the drying state information of the garbage entering the furnace in the drying process, and thus adjust the conveying state of the medium-temperature flue gas to the drying process.

[0007] Based on the screening state data of the biochar powder generated by the anaerobic pyrolysis process in the thermal sorting process, determine the carbon powder screening characteristics of the thermal sorting process; based on the carbon powder screening characteristics, adjust the screening operation state and the discharging operation state of the biochar powder in the thermal sorting process.

[0008] Preferably, the adjustment of the conveying state of the pyrolysis oil and gas to the gas furnace based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process for dry garbage is specifically as follows:

[0009] Detect the internal environment of the anaerobic pyrolysis process for dry garbage to obtain the change data of the proportion of pyrolysis oil and gas and the change data of the temperature of pyrolysis oil and gas in the internal environment; analyze the change data of the proportion of pyrolysis oil and gas and the change data of the temperature of pyrolysis oil and gas to obtain the change characteristics of the pressure of the pyrolysis oil and gas generated by the anaerobic pyrolysis process; based on the change characteristics of the pressure of the pyrolysis oil and gas, adjust the conveying and releasing pressure state of the pyrolysis oil and gas to the gas furnace.

[0010] Preferably, the estimation of the combustion state characteristics of the pyrolysis oil and gas in the gas furnace based on the high-temperature flue gas output data of the gas furnace and the adjustment of the combustion auxiliary operation of the pyrolysis oil and gas in the gas furnace are specifically as follows:

[0011] Detect the high-temperature flue gas output after the gas furnace burns the pyrolysis oil and gas to obtain the change data of the temperature of the high-temperature flue gas and the change data of the smoke particle concentration; analyze the change data of the temperature and the change data of the smoke particle concentration to estimate the combustion degree state characteristics of the pyrolysis oil and gas in the gas furnace; wherein, the combustion degree state characteristics refer to the proportion of the fully burned part of the pyrolysis oil and gas in the gas furnace; based on the combustion degree state characteristics, adjust the atomization operation of the pyrolysis oil and gas in the gas furnace and / or the oxygen supply operation to the gas furnace.

[0012] Preferably, based on the output data of the medium-temperature flue gas from the anaerobic pyrolysis process to the drying process, determine the drying environment characteristics of the drying process; based on the drying environment characteristics, predict the drying state information of the waste entering the furnace in the drying process, and adjust the conveying state of the medium-temperature flue gas to the drying process specifically as follows:

[0013] Detect the medium-temperature flue gas output from the anaerobic pyrolysis process to the internal space of the drying process to obtain medium-temperature flue gas temperature data and medium-temperature flue gas pressure data; analyze the medium-temperature flue gas temperature data and the medium-temperature flue gas pressure data to determine the heat flow movement state characteristics of the medium-temperature flue gas in the internal space, and use this as the drying environment characteristics; wherein, the heat flow movement state characteristics include the heat flow movement speed and movement direction of the internal space;

[0014] Based on the heat flow movement state characteristics and the movement state characteristics of the waste entering the furnace in the internal space, predict the moisture evaporation rate information of the waste entering the furnace under the action of the heat flow, and use this as the drying state information of the waste entering the furnace in the drying process; based on the moisture evaporation rate information, adjust the conveying flow rate and / or conveying pressure of the medium-temperature flue gas to the internal space.

[0015] Preferably, based on the screening state data of the biochar powder generated by the anaerobic pyrolysis process in the thermal screening process, determine the carbon powder screening characteristics of the thermal screening process; based on the carbon powder screening characteristics, adjust the screening operation state and the discharging state of the biochar powder in the thermal screening process specifically as follows:

[0016] Perform visual recognition on the screening process of the biochar powder generated by the anaerobic pyrolysis process in the thermal screening process to obtain the screening quantity change data of the biochar powder for metal impurities and non-metal impurities; analyze the screening quantity change data to estimate the residual quantity distribution characteristics of metal impurities and non-metal impurities in the biochar powder, and use this as the carbon powder screening characteristics;

[0017] Based on the residual quantity distribution characteristics of metal impurities and non-metal impurities in the biochar powder, adjust the operation states of the eddy current screening and color sorting screening of the biochar powder in the thermal screening process respectively, and adjust the discharging states of the eddy current screening and the color sorting screening respectively; wherein, the discharging state includes the discharging rate of the eddy current screening and the color sorting screening respectively.

[0018] On the other hand, the present invention provides a waste carbonization and hydrogen production process control system, and the system includes the following modules:

[0019] A pyrolysis oil and gas conveying adjustment module, which is used to adjust the conveying state of pyrolysis oil and gas to the gas furnace based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process of dry waste;

[0020] An oil-gas combustion auxiliary operation adjustment module, which is used to estimate the combustion state characteristics of the pyrolysis oil-gas in the gas furnace based on the high-temperature flue gas output data of the gas furnace, so as to adjust the combustion auxiliary operation of the pyrolysis oil-gas in the gas furnace;

[0021] A dry environment identification module, which is used to determine the dry environment characteristics of the drying process based on the medium-temperature flue gas output data of the oxygen-free pyrolysis process to the drying process;

[0022] A flue gas transportation adjustment module, which is used to predict the drying state information of the waste entering the furnace in the drying process based on the dry environment characteristics, so as to adjust the transportation state of the medium-temperature flue gas to the drying process;

[0023] A carbon powder screening identification module, which is used to determine the carbon powder screening characteristics of the thermal sorting process based on the screening state data of the bio-carbon powder generated by the oxygen-free pyrolysis process in the thermal sorting process;

[0024] A screening operation and discharging adjustment module, which is used to adjust the screening operation state and discharging operation state of the bio-carbon powder in the thermal sorting process based on the carbon powder screening characteristics.

[0025] Preferably, the pyrolysis oil-gas transportation adjustment module is used to adjust the transportation state of the pyrolysis oil-gas to the gas furnace based on the pyrolysis oil-gas generation characteristics of the oxygen-free pyrolysis process of dry waste, specifically:

[0026] Detect the internal environment of the oxygen-free pyrolysis process of dry waste to obtain the change data of the proportion of pyrolysis oil-gas and the change data of the temperature of pyrolysis oil-gas in the internal environment; analyze the change data of the proportion of pyrolysis oil-gas and the change data of the temperature of pyrolysis oil-gas to obtain the change characteristics of the pressure of the pyrolysis oil-gas generated by the oxygen-free pyrolysis process; based on the change characteristics of the pressure of the pyrolysis oil-gas, adjust the transportation and release pressure state of the pyrolysis oil-gas to the gas furnace.

[0027] Preferably, the oil-gas combustion auxiliary operation adjustment module is used to estimate the combustion state characteristics of the pyrolysis oil-gas in the gas furnace based on the high-temperature flue gas output data of the gas furnace, so as to adjust the combustion auxiliary operation of the pyrolysis oil-gas in the gas furnace, specifically:

[0028] Detect the high-temperature flue gas output after the gas furnace burns the pyrolysis oil gas to obtain the temperature change data and the smoke particle concentration change data of the high-temperature flue gas; analyze the temperature change data and the smoke particle concentration change data to estimate the combustion degree state characteristics of the pyrolysis oil gas in the gas furnace; wherein, the combustion degree state characteristic refers to the proportion of the fully burned part of the pyrolysis oil gas in the gas furnace; based on the combustion degree state characteristic, adjust the atomization operation of the pyrolysis oil gas in the gas furnace and / or the oxygen supply operation to the gas furnace.

[0029] Preferably, the drying environment identification module is used to determine the drying environment characteristics of the drying process based on the medium-temperature flue gas output data from the anaerobic pyrolysis process to the drying process, specifically:

[0030] Detect the medium-temperature flue gas output from the anaerobic pyrolysis process to the internal space of the drying process to obtain the medium-temperature flue gas temperature data and the medium-temperature flue gas pressure data; analyze the medium-temperature flue gas temperature data and the medium-temperature flue gas pressure data to determine the heat flow movement state characteristics of the medium-temperature flue gas in the internal space, and use this as the drying environment characteristics; wherein, the heat flow movement state characteristics include the heat flow movement speed and movement direction of the internal space.

[0031] The flue gas transportation adjustment module is used to predict the drying state information of the waste entering the furnace in the drying process based on the drying environment characteristics, and thus adjust the transportation state of the medium-temperature flue gas to the drying process, specifically:

[0032] Based on the heat flow movement state characteristics and the movement state characteristics of the waste entering the furnace in the internal space, predict the moisture evaporation rate information of the waste entering the furnace under the action of the heat flow, and use this as the drying state information of the waste entering the furnace in the drying process; based on the moisture evaporation rate information, adjust the transportation flow rate and / or transportation pressure of the medium-temperature flue gas to the internal space.

[0033] Preferably, the carbon powder screening identification module is used to determine the carbon powder screening characteristics of the thermal sorting process based on the screening state data of the bio-carbon powder generated by the anaerobic pyrolysis process in the thermal sorting process, specifically:

[0034] Visually identify the screening process of the bio-carbon powder generated by the anaerobic pyrolysis process in the thermal sorting process to obtain the screening quantity change data of the bio-carbon powder for metal impurities and non-metal impurities; analyze the screening quantity change data to estimate the residual quantity distribution characteristics of the metal impurities and non-metal impurities in the bio-carbon powder, and use this as the carbon powder screening characteristics.

[0035] The screening operation and discharge adjustment module is used to adjust the screening operation state and discharge operation state of the thermal sorting process for the biological carbon powder based on the carbon powder screening characteristics, specifically as follows:

[0036] Based on the residual amount distribution characteristics of metal impurities and non-metal impurities in the biological carbon powder, adjust the operation states of the eddy current screening and color sorting screening of the biological carbon powder in the thermal sorting process, and adjust the discharge states of the eddy current screening and the color sorting screening respectively; wherein, the discharge state includes the discharge rate of the eddy current screening and the color sorting screening respectively.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] Based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process for dry garbage, adjust the conveying state of the pyrolysis oil and gas to the gas furnace; based on the high-temperature flue gas output data of the gas furnace, estimate the combustion state characteristics of the pyrolysis oil and gas in the gas furnace, and thus adjust the combustion assistance operation of the pyrolysis oil and gas in the gas furnace. The anaerobic pyrolysis process is the key process to realize the carbonization of domestic waste. When dry garbage enters the anaerobic pyrolysis process, the dry garbage will undergo a carbonization reaction and be decomposed into bio-carbon powder and pyrolysis oil fume; the pyrolysis oil fume has a relatively high combustion calorific value, and at the same time, the anaerobic pyrolysis process needs to be maintained in a high-temperature environment to sustain the carbonization reaction. In order to realize the effective recycling of heat in the anaerobic pyrolysis process, the pyrolysis oil and gas can be transported into the gas furnace for combustion, and the high-temperature flue gas generated by the combustion of the pyrolysis oil and gas continuously supplies heat to the anaerobic pyrolysis process, realizing the self-heating of the anaerobic pyrolysis process and reducing the dependence of the anaerobic pyrolysis process on external heat. The combustion sufficiency of the pyrolysis oil and gas in the gas furnace directly affects the heat value of the high-temperature flue gas. When the pyrolysis oil and gas burn more sufficiently, the temperature of the generated high-temperature flue gas is higher and the concentration of smoke particles in it is also lower, which can provide a hot gas stream with less impurity content and high heat value for the anaerobic pyrolysis process; when the pyrolysis oil and gas burn less sufficiently, the temperature of the generated high-temperature flue gas is lower and the concentration of smoke particles in it is also higher, and it cannot provide a hot gas stream with less impurity content and high heat value for the anaerobic pyrolysis process. Whether the pyrolysis oil and gas burn sufficiently in the gas furnace depends on the ratio between the pyrolysis oil and gas transported into the gas furnace and oxygen and the sufficient contact between the two. In order to enable the pyrolysis oil and gas transported to the gas furnace during the implementation of the anaerobic pyrolysis process to burn sufficiently and efficiently, the conveying state of the pyrolysis oil and gas to the gas furnace can be adjusted according to the pressure of the pyrolysis oil and gas generated by the anaerobic pyrolysis process, ensuring that the gas furnace can continuously receive a stable-pressure supply of pyrolysis oil and gas, and avoiding excessive fluctuations in the supply of pyrolysis oil and gas in the gas furnace that cannot maintain the stable progress of the combustion reaction in the furnace. In addition, the volume ratio between the pyrolysis oil and gas and oxygen in the gas furnace and the sufficient contact degree between the two directly determine the combustion reaction sufficiency of the pyrolysis oil and gas. By adjusting the combustion assistance operation of the pyrolysis oil and gas in the gas furnace, the pyrolysis oil and gas can be made to react fully with oxygen in contact, avoiding the pyrolysis oil and gas being discharged with the high-temperature flue gas without combustion and affecting the heat recycling efficiency between the anaerobic pyrolysis process and the gas furnace.

[0039] Based on the output data of the medium-temperature flue gas from the anaerobic pyrolysis process to the drying process, determine the drying environment characteristics of the drying process; based on the drying environment characteristics, predict the drying state information of the waste entering the furnace in the drying process, and adjust the conveying state of the medium-temperature flue gas to the drying process accordingly. High-temperature flue gas is used to provide heat for the anaerobic pyrolysis process to maintain the high-temperature environment required for the implementation of the anaerobic pyrolysis process. After passing through the anaerobic pyrolysis process, the high-temperature flue gas will experience heat loss and its own temperature will decrease, and it will be discharged as medium-temperature flue gas. The medium-temperature flue gas still has relatively high heat, and directly discharging it to the external environment will not maximize the utilization of the heat of the flue gas. Given that domestic waste needs to be fully dried and dehydrated before the anaerobic pyrolysis process to improve the efficiency of the anaerobic pyrolysis reaction, the medium-temperature flue gas can be used as the heat source for the drying and dehydration of domestic waste. Generally speaking, the drying process of domestic waste is carried out in a relatively closed internal space. The higher the temperature and the more uniform the temperature distribution in the internal space, the more fully and uniformly the domestic waste can be dried. In order to form an efficient high-temperature drying environment in the internal space, it is necessary to ensure that the medium-temperature flue gas flows evenly and fully in the internal space corresponding to the drying process after being input, so that the medium-temperature flue gas is in full contact with the domestic waste, improve the heat exchange efficiency between the medium-temperature flue gas and the domestic waste, ensure that the internal moisture of the domestic waste evaporates quickly and fully under the action of the heat carried by the medium-temperature flue gas, complete the dehydration and drying of the domestic waste in a short time, and avoid moisture remaining in the domestic waste. According to the temperature data and pressure data of the medium-temperature flue gas after being input into the internal space, determine the heat flow movement and transmission state of the medium-temperature flue gas in the internal space, predict the evaporation of the moisture of the domestic waste caused during the contact process between the medium-temperature flue gas and the domestic waste, and adaptively adjust the conveying state of the medium-temperature flue gas to the internal space in the drying process to ensure that the medium-temperature flue gas forms an effective heat convection in the internal space and improve the contact adequacy between the medium-temperature flue gas and the domestic waste.

[0040] Based on the screening status data of the bio-carbon powder generated by the anaerobic pyrolysis process in the thermal screening process, determine the carbon powder screening characteristics of the thermal screening process; based on the carbon powder screening characteristics, adjust the screening operation status and the discharging operation status of the bio-carbon powder in the thermal screening process. The carbonization of domestic waste to produce hydrogen is achieved by using organic components such as kitchen waste in domestic waste. However, in addition to kitchen waste, domestic waste also includes substances such as metals and glass that cannot be used for hydrogen production, and these substances will affect the gasification efficiency of bio-carbon powder for hydrogen production. In order to improve the reaction efficiency of gasification for hydrogen production and the yield and purity of hydrogen, it is necessary to perform a thermal screening process on the bio-carbon powder to screen out the substances that affect the gasification efficiency. In order to achieve refined material sorting of bio-carbon powder, it is necessary to obtain the change data of the screening amounts of metal impurities and non-metal impurities in the bio-carbon powder in real time during the implementation of the thermal screening process, so as to estimate the residual amounts of metal impurities and non-metal impurities in the bio-carbon powder, provide a reliable basis for subsequent adjustment of the screening operation status and discharging status of the bio-carbon powder, and improve the accuracy of screening and removing metal impurities and non-metal impurities in the bio-carbon powder and the purity of the screened and discharged bio-carbon powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0042] Figure 1 is a flowchart of a prior art process for carbonizing and gasifying domestic waste to produce hydrogen.

[0043] Figure 2 is a flowchart of a method for controlling a waste carbonization process for hydrogen production provided by the present invention.

[0044] Figure 3 is a structural diagram of a waste carbonization process control system for hydrogen production provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings, rather than all the structures. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0046] The terms "comprising" and "having" and any variations thereof in the present invention are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally further comprises steps or units not listed, or optionally further comprises other steps or units inherent to these processes, methods, products or devices.

[0047] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The phrase occurs in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] Please refer to Figure 2 As shown, the present invention provides a method for controlling a waste carbonization hydrogen production process, the method comprising the following steps:

[0049] S100, based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process of dry waste, adjust the delivery state of the pyrolysis oil and gas to the gas furnace; based on the high-temperature flue gas output data of the gas furnace, estimate the combustion state characteristics of the pyrolysis oil and gas in the gas furnace, and thereby adjust the combustion auxiliary operation of the pyrolysis oil and gas in the gas furnace.

[0050] Further, based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process of dry waste, adjusting the delivery state of the pyrolysis oil and gas to the gas furnace specifically includes:

[0051] Detect the internal environment of the anaerobic pyrolysis process of dry waste to obtain the change data of the proportion of pyrolysis oil and gas and the change data of the temperature of pyrolysis oil and gas in the internal environment; analyze the change data of the proportion of pyrolysis oil and gas and the change data of the temperature of pyrolysis oil and gas to obtain the change characteristics of the pressure of pyrolysis oil and gas generated by the anaerobic pyrolysis process; based on the change characteristics of the pressure of pyrolysis oil and gas, adjust the delivery and release pressure state of the pyrolysis oil and gas to the gas furnace.

[0052] The waste carbonization hydrogen production control method of the present invention mainly optimizes and improves the anaerobic pyrolysis process, drying process, and thermal sorting process of the waste carbonization gasification hydrogen production process. Other processes of the waste carbonization gasification hydrogen production process can refer to the authorized patents mentioned in the background art and will not be described in detail here.

[0053] Municipal solid waste (the waste fed into the furnace) can be fed into the anaerobic pyrolysis process for pyrolysis carbonization treatment only after undergoing dehydration and drying treatment in the drying process to form dry waste. The anaerobic pyrolysis process is implemented through an anaerobic pyrolysis system, which is a key process for realizing the carbonization of municipal solid waste. The anaerobic pyrolysis process needs to be carried out in a high-temperature and airtight environment with oxygen isolation. Only when the airtight environment where the anaerobic pyrolysis process is located is maintained within the preset high-temperature range can the effective and complete carbonization reaction of municipal solid waste be ensured. Otherwise, the organic components in the municipal solid waste cannot be completely carbonized and cannot be completely converted into bio-carbon powder that can be used for hydrogen production by gasification. In order to maintain the high-temperature carbonization reaction environment required for the anaerobic pyrolysis process, a heating heat source needs to be provided for the anaerobic pyrolysis process. Considering that when the anaerobic pyrolysis process is carried out on dry waste, the dry waste will undergo a carbonization reaction and be decomposed into bio-carbon powder and pyrolysis oil fume. Among them, the pyrolysis oil fume has a high calorific value. In order to realize the effective recycling of the heat of the pyrolysis oil gas, the pyrolysis oil gas can be transported to a gas furnace for combustion, and the high-temperature flue gas generated by the combustion of the pyrolysis oil gas continuously supplies heat to the anaerobic pyrolysis process, realizing the self-heating of the anaerobic pyrolysis process and reducing the dependence of the anaerobic pyrolysis process on external heating heat sources.

[0054] The combustion adequacy of the pyrolysis oil gas in the gas furnace directly affects the heat value of the high-temperature flue gas. When the pyrolysis oil gas burns more adequately, the temperature of the generated high-temperature flue gas is higher and the smoke particle concentration of the high-temperature flue gas is also lower, and it can provide a hot gas stream with less impurity content and high heat value for the anaerobic pyrolysis process; when the pyrolysis oil gas burns less adequately, the temperature of the generated high-temperature flue gas is lower and the smoke particle concentration of the high-temperature flue gas is also higher, and it cannot provide a hot gas stream with less impurity content and high heat value for the anaerobic pyrolysis process. The combustion adequacy of the pyrolysis oil gas in the gas furnace depends on the volume ratio between the pyrolysis oil gas transported into the gas furnace and oxygen and the contact adequacy between the pyrolysis oil gas and oxygen. In addition, the flow rate of the pyrolysis oil gas transported to the gas furnace depends on the carbonization reaction rate of the anaerobic pyrolysis process. The greater the carbonization reaction rate, the greater the volume of pyrolysis oil gas generated per unit time. It can be seen that the carbonization reaction efficiency of the anaerobic pyrolysis process is related to the supply situation of the high-temperature flue gas, and the supply situation of the high-temperature flue gas is related to the combustion adequacy of the pyrolysis oil gas in the gas furnace, that is, the operation of the anaerobic pyrolysis process and the gas furnace affect each other. In order to enable the pyrolysis oil gas transported to the gas furnace during the implementation of the anaerobic pyrolysis process to burn sufficiently and efficiently, the transport state of the pyrolysis oil gas to the gas furnace can be adjusted according to the generation situation of the pyrolysis oil gas in the anaerobic pyrolysis process to ensure that the gas furnace can continuously receive a stable supply of pyrolysis oil gas, and avoid the inability to maintain the stable progress of the combustion reaction in the furnace due to excessive fluctuations in the supply of pyrolysis oil gas in the gas furnace, thereby affecting the stability and continuity of the supply of high-temperature flue gas to the anaerobic pyrolysis process.

[0055] Specifically, in order to ensure that the pyrolysis oil gas delivered into the gas furnace can burn sufficiently to generate high-temperature flue gas, it is necessary to first determine the generation of pyrolysis oil gas during the carbonization reaction of dry garbage in the oxygen-free pyrolysis process. In addition, the combustion sufficiency of the pyrolysis oil gas in the gas furnace is related to the pressure of the pyrolysis oil gas delivered into the gas furnace. The greater the pressure of the pyrolysis oil gas, the more sufficient the contact between the pyrolysis oil gas and oxygen in the gas furnace, and the more sufficient the combustion of the pyrolysis oil gas in the gas furnace. However, the pressure of the pyrolysis oil gas originally generated in the oxygen-free pyrolysis process is not fixed and does not always maintain a pressure state that can ensure sufficient combustion in the gas furnace. In order to ensure the combustion sufficiency of the pyrolysis oil gas in the gas furnace, it is necessary to first determine the pressure condition of the pyrolysis oil gas originally generated in the oxygen-free pyrolysis process. Generally speaking, the greater the proportion of the pyrolysis oil gas generated in the internal environment of the oxygen-free pyrolysis process and / or the higher the temperature of the pyrolysis oil gas, it indicates that the pressure of the pyrolysis oil gas originally generated in the oxygen-free pyrolysis process is also greater. Therefore, the internal environment of the oxygen-free pyrolysis process of dry garbage is detected to obtain the change data of the proportion of the pyrolysis oil gas in the internal environment and the change data of the temperature of the pyrolysis oil gas, and the change data of the proportion of the pyrolysis oil gas and the change data of the temperature of the pyrolysis oil gas are analyzed to obtain the change characteristics of the pressure of the pyrolysis oil gas originally generated in the oxygen-free pyrolysis process, that is, the change characteristics of the pressure of the pyrolysis oil gas originally generated at different time points in the oxygen-free pyrolysis process. Then, based on the change characteristics of the pyrolysis oil gas pressure, it is judged whether the pressure of the pyrolysis oil gas originally generated at the current time point in the oxygen-free pyrolysis process exceeds the preset pressure threshold. If so, the pyrolysis oil gas originally generated at the current time in the oxygen-free pyrolysis process is directly delivered to the gas furnace; if not, the pyrolysis oil gas originally generated at the current time in the oxygen-free pyrolysis process is pressurized and then delivered to the gas furnace, so as to increase the pressure value of the pyrolysis oil gas delivered to the gas furnace, ensure that the pyrolysis oil gas is quickly diffused and filled into the global space of the furnace when delivered to the gas furnace, and improve the combustion efficiency of the pyrolysis oil gas in the gas furnace.

[0056] Furthermore, based on the high-temperature flue gas output data of the gas furnace, the combustion state characteristics of the pyrolysis oil gas in the gas furnace are estimated, and the combustion auxiliary operation of the pyrolysis oil gas in the gas furnace is adjusted accordingly. Specifically:

[0057] The high-temperature flue gas output after the gas furnace burns the pyrolysis oil gas is detected to obtain the temperature change data and the smoke particle concentration change data of the high-temperature flue gas; the temperature change data and the smoke particle concentration change data are analyzed to estimate the combustion degree state characteristics of the pyrolysis oil gas in the gas furnace; among them, the combustion degree state characteristics refer to the proportion of the fully burned part of the pyrolysis oil gas in the gas furnace; based on the combustion degree state characteristics, the atomization operation of the pyrolysis oil gas in the gas furnace and / or the oxygen supply operation to the gas furnace are adjusted.

[0058] As can be seen from the above analysis, the temperature and smoke particle concentration of the high-temperature flue gas output by the gas furnace depend on the combustion sufficiency of the pyrolysis oil gas in the gas furnace. When the pyrolysis oil gas burns more sufficiently, the temperature of the generated high-temperature flue gas is higher and the smoke particle concentration of the high-temperature flue gas is lower, which can provide a hot gas stream with less impurity content and high calorific value for the anaerobic pyrolysis process; when the pyrolysis oil gas burns less sufficiently, the temperature of the generated high-temperature flue gas is lower and the smoke particle concentration of the high-temperature flue gas is higher, and it cannot provide a hot gas stream with less impurity content and high calorific value for the anaerobic pyrolysis process. Therefore, by detecting and analyzing the temperature change data and smoke particle concentration change data of the high-temperature flue gas output after the gas furnace burns the pyrolysis oil gas, the combustion sufficiency of the pyrolysis oil gas in the gas furnace can be estimated. Specifically, a temperature sensor and a smoke concentration sensor can be set at the flue gas output end of the gas furnace to detect the temperature change data and smoke particle concentration change data of the high-temperature flue gas output by the gas furnace during the corresponding time period, and then combined with the combustion reaction process of the pyrolysis oil gas in the gas furnace, estimate the proportion of the fully burned part of the pyrolysis oil gas in the gas furnace. This proportion refers to the ratio between the volume of the pyrolysis oil gas fully burned in the gas furnace per unit time and the total volume of all the pyrolysis oil gas transported into the gas furnace. Then compare this proportion with the preset proportion threshold. If this proportion exceeds the preset proportion threshold, keep the combustion reaction parameters of the pyrolysis oil gas in the gas furnace unchanged; if this proportion does not exceed the preset proportion threshold, enhance the atomization operation of the pyrolysis oil gas in the gas furnace and / or the oxygen supply operation to the gas furnace; among them, enhancing the atomization operation of the pyrolysis oil gas in the gas furnace can include but is not limited to reducing the liquid particle size of the atomized pyrolysis oil gas in the gas furnace, and enhancing the oxygen supply operation to the gas furnace can include but is not limited to increasing the flow rate of the oxygen transported into the gas furnace.

[0059] S200, based on the medium-temperature flue gas output data from the anaerobic pyrolysis process to the drying process, determine the drying environment characteristics of the drying process; based on the drying environment characteristics, predict the drying state information of the waste entering the furnace in the drying process, and adjust the transportation state of the medium-temperature flue gas to the drying process accordingly.

[0060] Furthermore, based on the medium-temperature flue gas output data from the anaerobic pyrolysis process to the drying process, determine the drying environment characteristics of the drying process; based on the drying environment characteristics, predict the drying state information of the waste entering the furnace in the drying process, and adjust the transportation state of the medium-temperature flue gas to the drying process accordingly, specifically as follows:

[0061] Detect the medium-temperature flue gas output from the internal space of the anaerobic pyrolysis process to the drying process to obtain the medium-temperature flue gas temperature data and medium-temperature flue gas pressure data; analyze the medium-temperature flue gas temperature data and medium-temperature flue gas pressure data to determine the heat flow movement state characteristics of the medium-temperature flue gas in the internal space, and use this as the drying environment characteristics; among them, the heat flow movement state characteristics include the heat flow movement speed and movement direction in the internal space.

[0062] Based on the characteristics of the heat flow motion state and the motion state characteristics of the waste entering the furnace in the internal space, predict the moisture evaporation rate information of the waste entering the furnace under the action of the heat flow, and use this as the drying state information of the waste entering the furnace in the drying process; based on the moisture evaporation rate information, adjust the conveying flow rate and / or the conveying pressure of the medium-temperature flue gas to the internal space.

[0063] The high-temperature flue gas is returned to the airtight environment where the anaerobic pyrolysis process is located, used to provide heat for the anaerobic pyrolysis process, and maintain the high-temperature environment required for the implementation of the anaerobic pyrolysis process. After passing through the anaerobic pyrolysis process, the high-temperature flue gas will suffer heat loss and its temperature will decrease, and it will be discharged as medium-temperature flue gas. The medium-temperature flue gas still has relatively high heat. Directly discharging it to the external environment will cause relatively large heat waste and cannot maximize the utilization of the heat of the flue gas. Given that domestic waste needs to be fully dried and dehydrated before the anaerobic pyrolysis process to improve the efficiency of the anaerobic pyrolysis reaction, the medium-temperature flue gas can be used as the heat source for drying and dehydrating domestic waste. Generally speaking, the drying process of domestic waste is carried out in a relatively enclosed internal space. The higher the temperature and the more uniform the temperature distribution in the internal space, the more fully and uniformly the domestic waste can be dried. In order to form an efficient high-temperature drying environment in the internal space, it is necessary to ensure that the medium-temperature flue gas flows evenly and fully in the internal space corresponding to the drying process after being input, so that the medium-temperature flue gas can come into full contact with the domestic waste, improve the heat exchange efficiency between the medium-temperature flue gas and the domestic waste, ensure that the internal moisture of the domestic waste evaporates quickly and fully under the action of the heat carried by the medium-temperature flue gas, complete the dehydration and drying of the domestic waste in a relatively short time, and avoid moisture remaining in the domestic waste. Generally speaking, when the medium-temperature flue gas can quickly fill the entire internal space and flow in the internal space at a relatively high speed after entering the internal space corresponding to the drying process, the medium-temperature flue gas can come into full and uniform contact with the domestic waste in the internal space, that is, the heat flow movement situation caused by the medium-temperature flue gas in the internal space corresponding to the drying process directly affects the drying efficiency of the domestic waste. Therefore, the medium-temperature flue gas output from the anaerobic pyrolysis process to the internal space of the drying process is detected to obtain the medium-temperature flue gas temperature data and the medium-temperature flue gas pressure data, and a motion model of the medium-temperature flue gas in the internal space is established based on the medium-temperature flue gas temperature data and the medium-temperature flue gas pressure data to obtain the movement speed and movement direction of the heat flow formed by the medium-temperature flue gas in the internal space, so as to quantitatively ensure the drying environment characteristics of the internal space. Then, based on the movement speed and movement direction of the heat flow formed by the medium-temperature flue gas in the internal space, the evaporation of the moisture of the domestic waste caused during the contact between the medium-temperature flue gas and the domestic waste is predicted to obtain the moisture evaporation rate information of the domestic waste under the action of the heat flow (that is, the moisture evaporation amount per unit time of the domestic waste under the action of the heat flow). Then, the moisture evaporation rate of the domestic waste under the action of the heat flow is compared with the preset evaporation rate threshold. If the moisture evaporation rate is less than the preset evaporation rate threshold, the conveying flow rate and / or the conveying pressure of the medium-temperature flue gas to the internal space are increased; if the moisture evaporation rate is greater than or equal to the preset evaporation rate threshold, the current conveying flow rate and the conveying pressure of the medium-temperature flue gas to the internal space are kept unchanged.

[0064] S300. Based on the screening state data of the bio-carbon powder generated by the anaerobic pyrolysis process in the thermal sorting process, determine the carbon powder screening characteristics of the thermal sorting process; based on the carbon powder screening characteristics, adjust the screening operation state and the discharging operation state of the bio-carbon powder in the thermal sorting process.

[0065] Furthermore, based on the screening status data of the biochar powder generated in the anaerobic pyrolysis process in the thermal sorting process, determine the carbon powder screening characteristics of the thermal sorting process; based on the carbon powder screening characteristics, adjust the screening operation status and the discharging status of the biochar powder in the thermal sorting process, specifically as follows:

[0066] Perform visual recognition on the screening process of the biochar powder generated in the anaerobic pyrolysis process in the thermal sorting process to obtain the change data of the screening amounts of the metal impurities and non-metal impurities in the biochar powder; analyze the change data of the screening amounts to estimate the residual amount distribution characteristics of the metal impurities and non-metal impurities in the biochar powder, and use this as the carbon powder screening characteristics;

[0067] Based on the residual amount distribution characteristics of the metal impurities and non-metal impurities in the biochar powder, adjust the respective operation statuses of the eddy current screening and color sorting screening of the biochar powder in the thermal sorting process, and adjust the respective discharging statuses of the eddy current screening and color sorting screening; wherein, the discharging status includes the respective discharging rates of the eddy current screening and color sorting screening.

[0068] The hydrogen production by carbonization of domestic waste is achieved by using organic components such as kitchen waste in domestic waste. However, domestic waste includes not only kitchen waste, but also substances that cannot be used for hydrogen production, such as metals (such as aluminum and copper) and glass. These substances will affect the hydrogen production efficiency of biochar gasification. In order to improve the reaction efficiency of gasification hydrogen production and the yield and purity of hydrogen, a thermal sorting process is required for biochar to screen out the substances that affect the gasification hydrogen production efficiency. For the metal substances among them, a vortex motor can be used for screening and removal, and for the glass substances among them, a color sorter can be used for screening and removal. Given the characteristics of biochar with fine particle size, incomplete screening and a large amount of unnecessary substances remaining widely in biochar are likely to occur during the screening and removal of substances. In order to reduce the impurity content of biochar and refine the sorting of different types of impurities in biochar, visual recognition is performed on the screening process of the biochar generated by the anaerobic pyrolysis process in the thermal sorting process to obtain the change data of the screening amounts of metal impurities and non-metal impurities in biochar; among them, the change data of the screening amounts of metal impurities and non-metal impurities refers to the respective quantities of metal impurities and non-metal impurities screened from biochar per unit time. Time evolution analysis is performed on the change data of the screening amounts of metal impurities and non-metal impurities to obtain the change trends of the respective quantities of metal impurities and non-metal impurities screened from biochar per unit time in a preset time period; if the change trends of the respective quantities of metal impurities and non-metal impurities screened from biochar per unit time indicate that the respective quantities of metal impurities and non-metal impurities screened are gradually decreasing, it indicates that the residual amounts of metal impurities and non-metal impurities in biochar are gradually decreasing. Combining with the internal regions of biochar corresponding to each screening of metal impurities and non-metal impurities respectively, the distribution characteristics of the residual amounts of metal impurities and non-metal impurities in biochar are estimated, that is, the residual amounts of metal impurities and non-metal impurities in different internal regions of biochar, providing a reliable basis for subsequent adjustment of the screening operation state and discharge state of biochar. Also, based on the distribution characteristics of the residual amounts of metal impurities and non-metal impurities in biochar, the operation states of vortex electric screening and color sorting screening of biochar in the thermal sorting process are adjusted, and the discharge states of vortex electric screening and color sorting screening are adjusted. For example, when the residual amount of metal impurities in a certain region inside biochar is too large, the intensity of the vortex current applied to the vortex electric screening operation in the corresponding region is increased; for example, when the residual amount of non-metal impurities in a certain region inside biochar is too large, the frequency of the color sorting screening operation in the corresponding region is increased; for example, when the residual amounts of metal impurities and non-metal impurities in a certain region inside biochar are small enough, the discharge rates of vortex electric screening and color sorting screening are increased, thereby improving the screening and removal accuracy of metal impurities and non-metal impurities in biochar and the purity of biochar screening and discharging.

[0069] Please refer to Figure 3As shown in the figure, the present invention provides a control system for a waste carbonization hydrogen production process, and the system includes the following modules:

[0070] A pyrolysis oil and gas transportation adjustment module, which is used to adjust the transportation state of pyrolysis oil and gas to the gas furnace based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process of dry waste;

[0071] An oil and gas combustion auxiliary operation adjustment module, which is used to estimate the combustion state characteristics of pyrolysis oil and gas in the gas furnace based on the high-temperature flue gas output data of the gas furnace, and thus adjust the combustion auxiliary operation of pyrolysis oil and gas in the gas furnace;

[0072] A drying environment identification module, which is used to determine the drying environment characteristics of the drying process based on the medium-temperature flue gas output data from the anaerobic pyrolysis process to the drying process;

[0073] A flue gas transportation adjustment module, which is used to predict the drying state information of the waste entering the furnace in the drying process based on the drying environment characteristics, and thus adjust the transportation state of the medium-temperature flue gas to the drying process;

[0074] A carbon powder screening identification module, which is used to determine the carbon powder screening characteristics of the thermal sorting process based on the screening state data of the bio-carbon powder generated in the anaerobic pyrolysis process in the thermal sorting process;

[0075] A screening operation and discharging adjustment module, which is used to adjust the screening operation state and discharging operation state of the bio-carbon powder in the thermal sorting process based on the carbon powder screening characteristics.

[0076] Furthermore, the pyrolysis oil and gas transportation adjustment module is used to adjust the transportation state of pyrolysis oil and gas to the gas furnace based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process of dry waste. Specifically:

[0077] Detect the internal environment of the anaerobic pyrolysis process of dry waste to obtain the change data of the proportion of pyrolysis oil and gas and the change data of the temperature of pyrolysis oil and gas in the internal environment; analyze the change data of the proportion of pyrolysis oil and gas and the change data of the temperature of pyrolysis oil and gas to obtain the change characteristics of the pressure of pyrolysis oil and gas generated in the anaerobic pyrolysis process; based on the change characteristics of the pressure of pyrolysis oil and gas, adjust the transportation and release pressure state of pyrolysis oil and gas to the gas furnace.

[0078] Furthermore, the oil and gas combustion auxiliary operation adjustment module is used to estimate the combustion state characteristics of pyrolysis oil and gas in the gas furnace based on the high-temperature flue gas output data of the gas furnace, and thus adjust the combustion auxiliary operation of pyrolysis oil and gas in the gas furnace. Specifically:

[0079] Detect the high-temperature flue gas output after the gas furnace burns and pyrolyzes oil and gas to obtain the temperature change data and soot particle concentration change data of the high-temperature flue gas; analyze the temperature change data and soot particle concentration change data to estimate the combustion degree state characteristics of the pyrolyzed oil and gas in the gas furnace; wherein, the combustion degree state characteristic refers to the proportion of the fully combusted part of the pyrolyzed oil and gas in the gas furnace; based on the combustion degree state characteristic, adjust the atomization operation of the pyrolyzed oil and gas in the gas furnace and / or the oxygen supply operation to the gas furnace.

[0080] Furthermore, the drying environment identification module is used to determine the drying environment characteristics of the drying process based on the medium-temperature flue gas output data from the anaerobic pyrolysis process to the drying process, specifically:

[0081] Detect the medium-temperature flue gas output from the anaerobic pyrolysis process to the internal space of the drying process to obtain the medium-temperature flue gas temperature data and medium-temperature flue gas pressure data; analyze the medium-temperature flue gas temperature data and medium-temperature flue gas pressure data to determine the heat flow movement state characteristics of the medium-temperature flue gas in the internal space, and use this as the drying environment characteristics; wherein, the heat flow movement state characteristics include the heat flow movement speed and movement direction in the internal space.

[0082] The flue gas transportation adjustment module is used to predict the drying state information of the waste entering the furnace in the drying process based on the drying environment characteristics, and thereby adjust the transportation state of the medium-temperature flue gas to the drying process, specifically:

[0083] Based on the heat flow movement state characteristics and the movement state characteristics of the waste entering the furnace in the internal space, predict the moisture evaporation rate information of the waste entering the furnace under the action of the heat flow, and use this as the drying state information of the waste entering the furnace in the drying process; based on the moisture evaporation rate information, adjust the transportation flow rate and / or transportation pressure of the medium-temperature flue gas to the internal space.

[0084] Furthermore, the carbon powder screening identification module is used to determine the carbon powder screening characteristics of the thermal sorting process based on the screening state data of the bio-carbon powder generated in the anaerobic pyrolysis process in the thermal sorting process, specifically:

[0085] Visually identify the screening process of the bio-carbon powder generated in the anaerobic pyrolysis process in the thermal sorting process to obtain the change data of the screening amounts of the bio-carbon powder for metal impurities and non-metal impurities; analyze the change data of the screening amounts to estimate the residual amount distribution characteristics of the metal impurities and non-metal impurities in the bio-carbon powder, and use this as the carbon powder screening characteristics.

[0086] The screening operation and discharge adjustment module is used to adjust the screening operation state and discharge operation state of the bio-carbon powder in the thermal sorting process based on the carbon powder screening characteristics, specifically:

[0087] Based on the distribution characteristics of the residual amounts of metallic and non-metallic impurities in the bio-carbon powder, adjust the operating states of the eddy current screening and color sorting screening of the bio-carbon powder in the thermal sorting process respectively, and adjust the discharging states of the eddy current screening and color sorting screening respectively; wherein, the discharging state includes the discharging rate of the eddy current screening and color sorting screening respectively.

[0088] The operation and effect of the waste carbonization hydrogen production process control system of the present invention are corresponding and consistent with those of the above-mentioned waste carbonization hydrogen production process control method, and the waste carbonization hydrogen production process control system will not be described repeatedly here.

[0089] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of adding a necessary general hardware platform, and of course, it can also be implemented by a combination of hardware and software. Based on such an understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a computer product. The present invention can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Other embodiments can also be adopted; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A garbage carbonization hydrogen production process control method, characterized in that: The method comprises the following steps: Based on the characteristics of pyrolysis oil and gas generation in the anaerobic pyrolysis process of dry garbage, the delivery state of pyrolysis oil and gas to the gas furnace is adjusted as follows: The internal environment of the anaerobic pyrolysis process of dry garbage is detected to obtain the pyrolysis oil and gas ratio change data and the pyrolysis oil and gas temperature change data of the internal environment; the pyrolysis oil and gas ratio change data and the pyrolysis oil and gas temperature change data are analyzed to obtain the pyrolysis oil and gas pressure change characteristics generated by the anaerobic pyrolysis process; based on the pyrolysis oil and gas pressure change characteristics, the pressure state of the pyrolysis oil and gas transported to the gas furnace is adjusted to release; Based on the high-temperature flue gas output data of the gas furnace, the combustion state characteristics of the pyrolysis oil and gas in the gas furnace are estimated, so as to adjust the combustion auxiliary operation of the pyrolysis oil and gas in the gas furnace, which is specifically: The high-temperature flue gas output after the gas furnace burns the pyrolysis oil and gas is detected to obtain temperature change data and smoke particle concentration change data of the high-temperature flue gas; the temperature change data and the smoke particle concentration change data are analyzed to estimate the combustion degree state characteristics of the pyrolysis oil and gas in the gas furnace; wherein the combustion degree state characteristics refer to the proportion of the fully burned part of the pyrolysis oil and gas in the gas furnace; based on the combustion degree state characteristics, the atomization operation of the pyrolysis oil and gas in the gas furnace and / or the oxygen supply operation to the gas furnace are adjusted; Based on the output data of the medium-temperature flue gas from the anaerobic pyrolysis process to the drying process, the drying environment characteristics of the drying process are determined; based on the drying environment characteristics, the drying state information of the garbage entering the furnace in the drying process is predicted, so as to adjust the conveying state of the medium-temperature flue gas to the drying process; Based on the screening status data of the biochar generated by the anaerobic pyrolysis process in the thermal sorting process, the carbon powder screening characteristics of the thermal sorting process are determined; based on the carbon powder screening characteristics, the screening operation state and the discharging operation state of the biochar in the thermal sorting process are adjusted.

2. The method according to claim 1, characterized in that The method of determining the drying environment characteristics of the drying process based on the medium-temperature flue gas output data from the anaerobic pyrolysis process to the drying process; predicting the drying state information of the waste entering the furnace in the drying process based on the drying environment characteristics, thereby adjusting the conveying state of the medium-temperature flue gas to the drying process, specifically: The medium-temperature flue gas output from the anaerobic pyrolysis process to the internal space of the drying process is detected to obtain medium-temperature flue gas temperature data and medium-temperature flue gas pressure data; the medium-temperature flue gas temperature data and the medium-temperature flue gas pressure data are analyzed to determine the heat flow motion state characteristics of the medium-temperature flue gas in the internal space, and use them as the drying environment characteristics; wherein the heat flow motion state characteristics include the heat flow motion speed and motion direction of the heat flow in the internal space; Based on the movement state characteristics of the heat flow and the movement state characteristics of the garbage entering the furnace in the internal space, the moisture evaporation rate information of the garbage entering the furnace under the action of the heat flow is predicted, and this is used as the drying state information of the garbage entering the furnace in the drying process; based on the moisture evaporation rate information, the delivery flow rate and / or delivery pressure of the medium-temperature flue gas to the internal space is adjusted.

3. The method according to claim 1, characterized in that The screening state data of the biochar generated by the anaerobic pyrolysis process in the thermal sorting process is used to determine the carbon powder screening characteristics of the thermal sorting process; based on the carbon powder screening characteristics, the screening operation state and the discharge state of the biochar in the thermal sorting process are adjusted, specifically: Visually identify the screening process of the biochar powder generated in the anaerobic pyrolysis process in the thermal sorting process to obtain the screening amount change data of the metal impurities and non-metal impurities in the biochar powder; analyze the screening amount change data to estimate the residual distribution characteristics of the metal impurities and non-metal impurities in the biochar powder, and use this as the carbon powder screening characteristics; Based on the residual distribution characteristics of metal impurities and non-metallic impurities in the bio-carbon powder, the operating states of the eddy-electric screening and color sorting of the bio-carbon powder in the hot sorting process are adjusted, and the discharging states of the eddy-electric screening and the color sorting are adjusted; wherein the discharging states include the discharging rates of the eddy-electric screening and the color sorting.

4. A garbage carbonization hydrogen production process control system, characterized in that: The system includes the following modules: The pyrolysis oil and gas delivery adjustment module is used to adjust the delivery state of the pyrolysis oil and gas to the gas furnace based on the pyrolysis oil and gas generation characteristics of the anaerobic pyrolysis process of dry garbage. Specifically: Detecting the internal environment of the anaerobic pyrolysis process of dry garbage to obtain the pyrolysis oil and gas ratio change data and the pyrolysis oil and gas temperature change data of the internal environment; analyzing the pyrolysis oil and gas ratio change data and the pyrolysis oil and gas temperature change data to obtain the pyrolysis oil and gas pressure change characteristics generated by the anaerobic pyrolysis process; Based on the pressure variation characteristics of the pyrolysis oil and gas, adjusting the pressure state of the pyrolysis oil and gas being delivered to the gas furnace; The oil and gas combustion auxiliary operation adjustment module is used to estimate the combustion state characteristics of the pyrolysis oil and gas in the gas furnace based on the high-temperature flue gas output data of the gas furnace, so as to adjust the combustion auxiliary operation of the pyrolysis oil and gas in the gas furnace, which is specifically: The high-temperature flue gas output after the gas furnace burns the pyrolysis oil and gas is detected to obtain temperature change data and smoke particle concentration change data of the high-temperature flue gas; the temperature change data and the smoke particle concentration change data are analyzed to estimate the combustion degree state characteristics of the pyrolysis oil and gas in the gas furnace; wherein the combustion degree state characteristics refer to the proportion of the fully burned part of the pyrolysis oil and gas in the gas furnace; based on the combustion degree state characteristics, the atomization operation of the pyrolysis oil and gas in the gas furnace and / or the oxygen supply operation to the gas furnace are adjusted; A drying environment identification module, for determining the drying environment characteristics of the drying process based on the output data of the medium-temperature flue gas from the anaerobic pyrolysis process to the drying process; A flue gas delivery adjustment module, used to predict the drying state information of the garbage entering the furnace in the drying process based on the drying environment characteristics, so as to adjust the delivery state of the medium-temperature flue gas to the drying process; A carbon powder screening identification module, for determining the carbon powder screening characteristics of the thermal sorting process based on the screening state data of the biocarbon powder generated by the anaerobic pyrolysis process in the thermal sorting process; The screening operation and discharging adjustment module is used to adjust the screening operation state and the discharging operation state of the bio-carbon powder in the thermal sorting process based on the screening characteristics of the carbon powder.

5. The system according to claim 4, characterized in that The drying environment identification module is used to determine the drying environment characteristics of the drying process based on the output data of the medium-temperature flue gas from the anaerobic pyrolysis process to the drying process, specifically: The medium-temperature flue gas output from the anaerobic pyrolysis process to the internal space of the drying process is detected to obtain medium-temperature flue gas temperature data and medium-temperature flue gas pressure data; the medium-temperature flue gas temperature data and the medium-temperature flue gas pressure data are analyzed to determine the heat flow motion state characteristics of the medium-temperature flue gas in the internal space, and use them as the drying environment characteristics; wherein the heat flow motion state characteristics include the heat flow motion speed and motion direction of the heat flow in the internal space; The flue gas delivery adjustment module is used to predict the drying state information of the garbage entering the furnace in the drying process based on the drying environment characteristics, so as to adjust the delivery state of the medium-temperature flue gas to the drying process, specifically: Based on the movement state characteristics of the heat flow and the movement state characteristics of the garbage entering the furnace in the internal space, the moisture evaporation rate information of the garbage entering the furnace under the action of the heat flow is predicted, and this is used as the drying state information of the garbage entering the furnace in the drying process; based on the moisture evaporation rate information, the delivery flow rate and / or delivery pressure of the medium-temperature flue gas to the internal space is adjusted.

6. The system according to claim 4, characterized in that The carbon powder screening identification module is used to determine the carbon powder screening characteristics of the thermal sorting process based on the screening state data of the biological carbon powder generated in the anaerobic pyrolysis process in the thermal sorting process, specifically: Visually identify the screening process of the biochar powder generated in the anaerobic pyrolysis process in the thermal sorting process to obtain the screening amount change data of the metal impurities and non-metal impurities in the biochar powder; analyze the screening amount change data to estimate the residual distribution characteristics of the metal impurities and non-metal impurities in the biochar powder, and use this as the carbon powder screening characteristics; The screening operation and discharging adjustment module is used to adjust the screening operation state and discharging operation state of the bio-carbon powder in the thermal sorting process based on the carbon powder screening characteristics, specifically: Based on the residual distribution characteristics of metal impurities and non-metallic impurities in the bio-carbon powder, the operating states of the eddy-electric screening and color sorting of the bio-carbon powder in the hot sorting process are adjusted, and the discharging states of the eddy-electric screening and the color sorting are adjusted; wherein the discharging states include the discharging rates of the eddy-electric screening and the color sorting.

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