A method, system, terminal, and storage medium for treating fly ash from waste incineration.

Abstract

This application relates to a method, system, terminal, and storage medium for treating waste incineration fly ash, belonging to the field of environmental protection technology. The method includes: introducing incineration fly ash into a treatment furnace through an inlet located at the top of the furnace; the minimum temperature inside the furnace being higher than a preset temperature threshold; and a gas inlet located on the side of the furnace; heating the incineration fly ash through the furnace, with the heating temperature increasing from top to bottom; conveying the incineration fly ash to an adsorption chamber through an outlet located at the bottom of the furnace; and in the adsorption chamber, gas and incineration fly ash undergo heat exchange followed by gas-solid separation to form hot gas and cooled incineration fly ash. This application has the effect of purifying incineration fly ash from waste-to-energy plants.

Description

Technical Field

[0001] This application relates to the field of environmental protection technology, and in particular to a method, system, terminal and storage medium for treating fly ash from waste incineration. Background Technology

[0002] Waste-to-energy plants are facilities that generate electricity by incinerating waste. However, the incineration of waste produces large amounts of hazardous waste (such as dioxins and heavy metals), causing environmental pollution. Therefore, removing hazardous waste from waste incineration gases is a significant challenge.

[0003] Related technologies for removing hazardous waste from incineration fly ash involve lowering the temperature of the fly ash to below 200 degrees Celsius. Activated carbon powder is then sprayed into the fly ash to adsorb dioxins and heavy metals. Subsequently, baghouse dust collection technology is used to capture the activated carbon powder, achieving the effect of removing dioxins and heavy metals.

[0004] Regarding the aforementioned technologies, activated carbon powder can only achieve physical adsorption, posing a risk of secondary release, and its purification effect on incineration fly ash is poor. Summary of the Invention

[0005] In order to purify the fly ash from waste-to-energy plants, this application provides a method, system, terminal, and storage medium for treating fly ash from waste incineration plants.

[0006] Firstly, this application provides a method for treating fly ash from waste incineration, employing the following technical solution: A method for treating fly ash from waste incineration includes: Incineration fly ash is fed into the treatment furnace through a feed inlet located at the top of the treatment furnace. The minimum temperature inside the treatment furnace is greater than a preset temperature threshold. A gas inlet is also provided on the side of the treatment furnace. The incineration fly ash is heated through the treatment furnace, and the heating temperature of the treatment furnace increases from top to bottom; The incineration fly ash is conveyed to the adsorption chamber through the discharge port, which is located at the bottom of the treatment furnace; In the adsorption chamber, the gas and the incineration fly ash undergo heat exchange and then separate into hot gas and cooled incineration fly ash.

[0007] By employing the above technical solution, the incineration fly ash is heated in a treatment furnace, with the heating temperature increasing from top to bottom. This causes dioxins in the fly ash to be oxidized at the top of the furnace, while heavy metals are encapsulated in a glass mesh structure at the bottom, thus solidifying them within the fly ash. This solution effectively removes dioxins from incineration fly ash and solidifies heavy metals, achieving fly ash purification and ensuring that the fly ash meets emission standards.

[0008] Optionally, a circulation pipe is provided on the side wall of the processing furnace, the circulation pipe including a circulation inlet and a circulation outlet; Acquire the temperature data inside the processing furnace; The current temperature distribution of the processing furnace is generated based on the temperature data; Based on the current temperature distribution and the preset temperature distribution, determine whether there are any temperature anomalies in the processing furnace; If so, the circulation pipe is opened, allowing the incineration fly ash to enter from the circulation feed port and exit from the circulation exhaust port; If not, repeat the judgment step.

[0009] By adopting the above technical solution, the flow of incineration fly ash inside the treatment furnace is adjusted through the circulation pipeline. Incineration fly ash with abnormal temperature is sent back to the circulation exhaust port through the circulation pipeline and reheated. This achieves complete removal of dioxins and ensures that the incineration fly ash meets the emission standards.

[0010] Optionally, the circulating feed inlet is located near the bottom of the processing furnace, and the circulating exhaust outlet includes at least two outlets located at different heights within the processing furnace. Based on the current temperature distribution, obtain the first temperature data at the circulating exhaust port; Based on the preset temperature data, a target temperature data is determined in the first temperature data, wherein the difference between the target temperature data and the preset temperature data is less than a preset temperature threshold. Based on the target temperature data, a target circulating exhaust port is determined in the circulating exhaust port; The incineration fly ash is drawn in through the circulating feed inlet and discharged through the target circulating exhaust outlet.

[0011] By adopting the above technical solution, multiple circulating exhaust ports are provided, and a target circulating exhaust port is determined among the multiple circulating exhaust ports. The incineration fly ash is discharged through the target circulating exhaust port, which can achieve the effect of precise control of local temperature abnormality areas, making the temperature control inside the treatment furnace more precise.

[0012] Optionally, monitor the first flow rate data within the circulation pipe; If the first flow rate data is less than the preset flow rate threshold, the air outlet direction of the circulating exhaust port is adjusted to the first direction, and the angle between the first direction and the vertical upward direction is an acute angle. The incineration fly ash is controlled to be drawn into the circulating exhaust port and discharged from the circulating feed port; When the first flow rate data is greater than the preset flow rate threshold, the incineration fly ash is controlled to be drawn into the circulating feed port and discharged from the circulating exhaust port.

[0013] By adopting the above technical solution, when an abnormality is detected in the first flow data inside the circulation pipeline, the working mode of the circulation pipeline is adjusted to control the incineration fly ash to be drawn in from the circulation exhaust port and discharged from the circulation feed port, thereby removing the fly ash clogging the circulation pipeline and ensuring the normal operation of the circulation pipeline.

[0014] Optionally, the exhaust direction of the circulating exhaust port can be obtained; Obtain the current gas direction at the gas inlet and the current feed direction at the feed port; The intersection position is obtained based on the current gas direction and the current feed direction; Determine whether the exhaust direction coincides with the intersection position; If so, then keep the exhaust direction unchanged; If not, adjust the exhaust direction so that the intersection point is located in the exhaust direction.

[0015] By adopting the above technical solution, after determining the current gas direction and the current feed direction and obtaining the intersection position, the exhaust direction of the circulation pipeline is adjusted so that the intersection position is in the exhaust direction. This allows the incineration fly ash discharged from the circulation pipeline to disturb the gas inlet and the feed inlet, so that the incineration fly ash entering the feed inlet is fully mixed with the gas entering the gas inlet.

[0016] Optionally, the incineration fly ash is drawn in through the circulating feed inlet, and the circulating exhaust port is closed; Monitor the real-time pressure data within the circulation pipeline; If the real-time pressure data is greater than the preset pressure data, the air inlet direction of the circulating feed port is adjusted to a second direction, which faces the discharge port. Control the discharge of the incineration fly ash from the circulating feed port, so that the incineration fly ash is discharged from the circulating feed port through the air inlet.

[0017] By adopting the above technical solution, the incineration fly ash is temporarily stored in the circulation pipeline, and when the real-time pressure data in the circulation pipeline is greater than the preset pressure data, the incineration fly ash is discharged from the circulation feed port, so that the incineration fly ash is discharged from the circulation feed port through the air port direction. This can remove the fly ash accumulated at the bottom of the treatment furnace and ensure the normal operation of the treatment furnace.

[0018] Optionally, the hazardous waste content in the incineration fly ash and the second flow rate data of the incineration fly ash are obtained; Based on the hazardous waste content and the second flow rate data, calculate the gas consumption per unit time; Obtain the oxygen content of the gas at the gas inlet; Based on the oxygen content of the gas and the gas consumption, the third flow rate data corresponding to the gas inlet is obtained; Adjust the gas flow rate at the gas inlet according to the third flow rate data.

[0019] By adopting the above technical solution, the gas consumption per unit time is calculated based on the hazardous waste content and the second flow rate data, thus quantifying the oxygen demand. Furthermore, a third flow rate data is dynamically generated by combining the oxygen content of the gas at the gas inlet, allowing for on-demand control of the gas injection rate.

[0020] Secondly, this application provides a waste incineration fly ash treatment system, which adopts the following technical solution: A waste incineration fly ash treatment system includes: The acquisition module is used to acquire temperature data, first flow rate data, and second flow rate data. A memory for storing the program for the treatment method of the waste incineration fly ash; The processor and the program in the memory can be loaded and executed by the processor to implement the method for treating fly ash from waste incineration.

[0021] By employing the above technical solution, the incineration fly ash is heated in a treatment furnace, with the heating temperature increasing from top to bottom. This causes dioxins in the fly ash to be oxidized at the top of the furnace, while heavy metals are encapsulated in a glass mesh structure at the bottom, thus solidifying them within the fly ash. This solution effectively removes dioxins from incineration fly ash and solidifies heavy metals, achieving fly ash purification and ensuring that the fly ash meets emission standards.

[0022] Thirdly, this application provides a smart terminal, which adopts the following technical solution: A smart terminal includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the method described in any one of the above.

[0023] Fourthly, this application provides a computer storage medium capable of storing corresponding programs, which facilitates the purification of incineration fly ash from waste-to-energy plants, and adopts the following technical solution: A computer-readable storage medium storing a computer program that can be loaded by a processor and executed any of the above-described methods for treating fly ash from waste incineration.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The fly ash is heated in a treatment furnace, with the temperature increasing from top to bottom. This process oxidizes dioxins in the fly ash at the top and encapsulates heavy metals within a glass mesh structure at the bottom, thus solidifying them within the fly ash. This method effectively removes dioxins and solidifies heavy metals from fly ash, achieving purification and ensuring that the fly ash meets emission standards. 2. Adjust the flow of incineration fly ash inside the treatment furnace through the circulation pipeline, and send the incineration fly ash with abnormal temperature back to the circulation exhaust port through the circulation pipeline. The incineration fly ash with abnormal temperature is reheated to achieve complete removal of dioxins and ensure that the incineration fly ash meets the emission standards. 3. Multiple circulating exhaust ports are provided, and a target circulating exhaust port is selected among the multiple circulating exhaust ports. The incineration fly ash is discharged through the target circulating exhaust port, which can achieve the effect of precise control of local temperature abnormal areas, making the temperature control inside the treatment furnace more precise. Attached Figure Description

[0025] Figure 1 This is a schematic flowchart of a method for treating fly ash from waste incineration provided in an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of a processing furnace provided in an embodiment of this application.

[0027] Figure 3 This is a flowchart illustrating a method for using a circulating pipeline according to an embodiment of this application.

[0028] Figure 4 This is a flowchart illustrating a third method for using a circulating pipeline, as provided in an embodiment of this application.

[0029] Figure 5 This is a flowchart illustrating a third method for using a circulating pipeline, as provided in an embodiment of this application.

[0030] Figure 6 This is a flowchart illustrating a method for controlling the exhaust direction provided in an embodiment of this application.

[0031] Figure 7This is a flowchart illustrating a control method for a circulating pipeline provided in an embodiment of this application.

[0032] Figure 8 This is a schematic flowchart of a ventilation method in a processing furnace provided in an embodiment of this application.

[0033] Figure 9 This is a schematic diagram of a waste incineration fly ash treatment system provided in an embodiment of this application. Detailed Implementation

[0034] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1 to 9 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0035] This application discloses a method for treating fly ash from waste incineration. (Refer to...) Figure 1 The method includes: Step S101: Incineration fly ash is fed into the treatment furnace through the feed inlet, which is located at the top of the treatment furnace. The minimum temperature inside the treatment furnace is greater than the preset temperature threshold. A gas inlet is also provided on the side of the treatment furnace.

[0036] Incineration fly ash contains at least dioxins and heavy metals. Dioxins originate from incomplete combustion and low-temperature resynthesis during waste incineration. Heavy metals exist as aerosol particles and are enriched on the surface of fly ash particles.

[0037] The preset temperature threshold is a preset empirical value. Further, the preset temperature threshold is the minimum decomposition temperature of dioxins, for example, a preset temperature threshold of 850°C.

[0038] For example, please refer to Figure 2 Inside the treatment furnace 11, the feed inlet 111 and the gas outlet 115 are located at the top of the treatment furnace 11, and the gas inlet is located on the side of the treatment furnace 11. Incineration fly ash enters the treatment furnace 11 through the feed inlet 111, and gas enters the treatment furnace 11 through the gas inlet 112. Dioxins in the incineration fly ash are decomposed into non-toxic and harmless substances or low-toxic and low-harm substances in the treatment furnace.

[0039] On the other hand, please refer to Figure 2After the gas enters the processing furnace 11 through the gas inlet 112, it exits the furnace 11 through the gas outlet 115 at the top. The gas then enters the first heat exchanger, which is connected to the feed inlet 111, where it interacts with the incinerator fly ash to preheat it. Next, the gas enters the second heat exchanger, which is connected to the adsorption chamber 12, where it interacts with the molten incinerator fly ash to heat the gas and cool the fly ash. Finally, the heated gas is reintroduced into the processing furnace 11 through the gas inlet 112, achieving gas recycling.

[0040] Step S102: The incineration fly ash is heated by a treatment furnace, with the heating temperature of the treatment furnace increasing from top to bottom.

[0041] Optionally, the temperature at the bottom of the processing furnace is at least higher than the metal melting temperature. In incineration fly ash, heavy metals are adsorbed onto the fly ash particles. Under certain temperature conditions, the heavy metals are encased in a glass mesh structure, thus being solidified in the incineration fly ash.

[0042] The heating temperature inside the treatment furnace increases from top to bottom; for example, the temperature at the top of the furnace is 850°C, and the temperature at the bottom is 1200°C. Dioxins in the incinerator fly ash can be oxidized and decomposed at the top of the furnace, while heavy metals can be solidified at the bottom. Thus, dioxins and heavy metals are removed and solidified simultaneously within the treatment furnace.

[0043] For example, the temperature at the bottom of the treatment furnace should be at least greater than 1200°C. Furthermore, the time required for the fly ash to settle from the top (850°C) to the bottom (1200°C) needs to be greater than 15 seconds to ensure complete treatment of the fly ash. Therefore, the height of the treatment furnace can be set based on the aforementioned time.

[0044] Step S103: The incineration fly ash is conveyed to the adsorption chamber through the discharge port, which is located at the bottom of the treatment furnace.

[0045] For example, please refer to Figure 2 The molten fly ash is transported to the adsorption chamber 12 through the discharge port 113 on the processing furnace 11.

[0046] Step S104: In the adsorption chamber, the gas and the incineration fly ash undergo heat exchange and then gas-solid separation to form hot gas and cooled incineration fly ash.

[0047] In the adsorption chamber, the gas and molten fly ash undergo thermal interaction, heating the gas and cooling the fly ash. Finally, the heated gas is reintroduced into the treatment furnace through the gas inlet, achieving gas recycling.

[0048] The above-mentioned technical solution involves heating the incinerator fly ash in a treatment furnace, with the heating temperature increasing from top to bottom. This oxidizes dioxins in the fly ash at the top of the furnace, while heavy metals are encapsulated in a glass mesh structure at the bottom, thus solidifying them within the fly ash. This method effectively removes dioxins and solidifies heavy metals from incinerator fly ash, achieving purification and ensuring that the fly ash meets emission standards.

[0049] In the following embodiments, to ensure a more reasonable temperature distribution within the processing furnace and improve its purification effect, a circulation pipe is provided on the side wall of the processing furnace. The circulation pipe includes a circulation inlet and a circulation outlet. For example, please refer to... Figure 2 A circulation pipe 114 is provided on the side wall of the processing furnace 11, which includes a circulation inlet 1141 and a circulation outlet 1142. The operation of the circulation pipe ensures the normal operation of the processing furnace. Therefore, this application discloses a method for using a circulation pipe. (Refer to...) Figure 3 The method includes: Step S301: Obtain temperature data inside the processing furnace.

[0050] Temperature data includes timestamps, location data, and temperature values. The timestamp indicates the time when the temperature data was generated, the location data indicates the location where the temperature data was collected, and the temperature value refers to the specific numerical value of the temperature data.

[0051] Optionally, temperature sensors are installed at different locations inside the processing furnace, and temperature data can be obtained by reading the temperature sensors.

[0052] Step S302: Generate the current temperature distribution of the processing furnace based on the temperature data.

[0053] The current temperature distribution is a graphical representation of the temperature distribution within a processing furnace. For example, the current temperature distribution is presented as a temperature distribution map.

[0054] For example, temperature data is preprocessed to obtain standard temperature data. Preprocessing includes, but is not limited to, removing outliers, standardizing the format of the temperature data, and compensating for at least one of the following: A three-dimensional voxel mesh model of the processing furnace is established, consisting of several uniformly stacked cubes. The standard temperature data is mapped onto the three-dimensional voxel mesh model, and interpolation calculations are performed on each grid point in the model to obtain the current temperature distribution.

[0055] Furthermore, the formula used for interpolation calculation can be, where is the interpolated temperature at the point with coordinates (x, y, z), is the i-th temperature data, represents the distance from the corresponding position of the temperature data to the grid point, and p is a power parameter, which can be 2 or 3.

[0056] Step S303: Based on the current temperature distribution and the preset temperature distribution, determine whether there are any abnormal temperature points in the processing furnace.

[0057] If there is an abnormal temperature point in the processing furnace, proceed to step S304; If there are no abnormal temperature points in the furnace, proceed to step S305.

[0058] The preset temperature distribution refers to a graphical representation of the temperature distribution inside the furnace under ideal conditions. The preset temperature distribution is set in advance.

[0059] Optionally, given the current temperature distribution, real-time temperature data for a target point (any point within the processing furnace) is acquired. Given a preset temperature distribution, preset temperature data for the target point is acquired. The difference between the real-time temperature data and the preset temperature data is calculated to obtain the temperature difference value. If the temperature difference is greater than the preset temperature difference value, the target point is identified as a temperature anomaly point; if the temperature difference is not greater than the preset temperature difference value, the target point is updated, and the above steps are repeated to determine the temperature of each point within the processing furnace.

[0060] Step S304: If so, open the circulation pipe to allow the incineration fly ash to enter from the circulation feed port and exit from the circulation exhaust port.

[0061] Optionally, an air pump is installed in the circulation pipeline, and the air pump has a first operating mode and a second operating mode. In the first operating mode, the air pump can allow incinerator fly ash to enter from the circulation feed port and exit from the circulation exhaust port. In the second operating mode, the air pump can allow incinerator fly ash to enter from the circulation exhaust port and exit from the circulation feed port.

[0062] Furthermore, in this step, the air pump is controlled to enter the first working mode.

[0063] Step S305: If not, repeat the judgment step.

[0064] If there are no abnormal temperature points in the processing furnace, repeat step S303 above to repeatedly determine the real-time temperature distribution in the processing furnace.

[0065] By adopting the above technical solution, the flow of incineration fly ash inside the treatment furnace is adjusted through the circulation pipeline. Incineration fly ash with abnormal temperature is sent back to the circulation exhaust port through the circulation pipeline and reheated. This achieves complete removal of dioxins and ensures that the incineration fly ash meets the emission standards.

[0066] In the following embodiments, the circulating feed inlet is located near the bottom of the processing furnace, and the circulating exhaust outlet includes at least two outlets located at different heights within the processing furnace. For example, please refer to... Figure 2 The circulation pipe 114 is equipped with a circulation exhaust port 1142 and a circulation exhaust port 1143. By using different circulation exhaust ports to discharge incineration fly ash, the effect of precisely controlling localized areas of abnormal temperature can be achieved. Therefore, this application discloses a second method for using a circulation pipe. (Refer to...) Figure 4 The method includes: Step S401: Based on the current temperature distribution, obtain the first temperature data at the circulating exhaust port.

[0067] The first temperature data is used to represent the temperature value near the circulating exhaust port. Furthermore, the shortest distance from the location corresponding to the first temperature data in the processing furnace to the circulating exhaust port is less than a distance threshold.

[0068] In some other embodiments, if a temperature sensor is provided at the recirculation exhaust port, the reading of the aforementioned temperature sensor is set as the first temperature data.

[0069] Step S402: Based on the preset temperature data, determine the target temperature data in the first temperature data, where the difference between the target temperature data and the preset temperature data is less than the preset temperature threshold.

[0070] The preset temperature data is the temperature data corresponding to the circulating exhaust port in the preset temperature distribution. The location of the preset temperature data is the same as the location of the first temperature data.

[0071] The preset temperature threshold is a preset empirical value, and technicians can adjust the specific value of the preset temperature threshold according to actual needs.

[0072] Step S403: Based on the target temperature data, determine the target circulating exhaust port in the circulating exhaust port.

[0073] For example, the location of the target temperature data within the processing furnace is obtained to acquire target location data. The recirculating exhaust port closest to the target location data is then designated as the target recirculating exhaust port.

[0074] Step S404: Inhale incineration fly ash through the circulating feed inlet and discharge incineration fly ash through the target circulating exhaust outlet.

[0075] When incineration fly ash is drawn in through the circulating feed inlet and discharged through the target circulating exhaust outlet, the incineration fly ash located at the bottom can be sent back to the top or middle of the treatment furnace, so that the incineration fly ash can be treated again in the treatment furnace, ensuring that the dioxins in the incineration fly ash can be completely decomposed.

[0076] By adopting the above technical solution, multiple circulating exhaust ports are provided, and a target circulating exhaust port is determined among the multiple circulating exhaust ports. The incineration fly ash is discharged through the target circulating exhaust port, which can achieve the effect of precise control of local temperature abnormality areas, making the temperature control inside the treatment furnace more precise.

[0077] In the following embodiments, since the incineration fly ash contains a certain amount of solid particles, these particles may accumulate in the circulation pipe, thus affecting the normal operation of the circulation pipe. To solve this problem, this application discloses a third method for using a circulation pipe. (Refer to...) Figure 5 The method includes: Step S501: Monitor the first flow rate data in the circulation pipeline.

[0078] The first flow rate data refers to the flow rate of incinerated fly ash within the circulating pipeline.

[0079] Optionally, a flow sensor is installed inside the circulation pipe, and the reading of the flow sensor is used as the first flow data. Furthermore, there can be multiple flow sensors inside the circulation pipe; in this case, after obtaining the reading of each flow sensor, the average of the readings is used as the first flow data.

[0080] Step S502: When the first flow rate data is less than the preset flow rate threshold, adjust the air outlet direction of the circulating exhaust port to the first direction, and the angle between the first direction and the vertical upward direction is an acute angle.

[0081] If the first flow rate is less than the preset flow rate threshold, it indicates that the incineration fly ash in the circulation pipe is not flowing at a normal flow rate, and there is a high probability that the circulation pipe is blocked. In order to ensure that the circulation pipe can operate normally, the incineration fly ash inside the circulation pipe needs to be removed in time.

[0082] In this embodiment, adjusting the direction of the circulating exhaust port to the first direction allows the incineration fly ash to move towards the top of the treatment furnace, preventing the incineration fly ash from falling to the bottom of the treatment furnace on its own, which would cause the incineration fly ash to abnormally enter the discharge port.

[0083] In some other embodiments, if the first flow rate data is not less than a preset flow rate threshold, it indicates that the incineration fly ash in the circulation pipe is flowing at a normal flow rate and there is no blockage in the circulation pipe. Therefore, repeating the monitoring and judgment steps does not require the execution of subsequent steps.

[0084] Step S503: Control the incineration fly ash to be drawn in from the circulating exhaust port and discharged from the circulating feed port.

[0085] Optionally, an air pump is installed in the circulation pipeline, and the air pump has a first operating mode and a second operating mode. In the first operating mode, the air pump can allow incinerator fly ash to enter from the circulation feed port and exit from the circulation exhaust port. In the second operating mode, the air pump can allow incinerator fly ash to enter from the circulation exhaust port and exit from the circulation feed port.

[0086] Furthermore, in this step, the air pump is controlled to enter the second working mode.

[0087] Step S504: When the first flow rate data is greater than the preset flow rate threshold, control the incineration fly ash to be sucked in from the circulating feed port and discharged from the circulating exhaust port.

[0088] If the detected first flow rate data is greater than the preset flow rate threshold, it indicates that the incineration fly ash in the circulation pipeline has been removed and the gas flow in the circulation pipeline has returned to normal.

[0089] By adopting the above technical solution, when an abnormality is detected in the first flow data inside the circulation pipeline, the working mode of the circulation pipeline is adjusted to control the incineration fly ash to be drawn in from the circulation exhaust port and discharged from the circulation feed port, thereby removing the fly ash clogging the circulation pipeline and ensuring the normal operation of the circulation pipeline.

[0090] In the following embodiments, this application discloses a method for controlling the exhaust direction. (Refer to...) Figure 6 The method includes: Step S601: Obtain the exhaust direction of the circulating exhaust port.

[0091] The exhaust direction refers to the direction in which the incinerated fly ash is discharged from the circulating exhaust port. In some embodiments, the exhaust direction is determined based on the orientation of the circulating exhaust port.

[0092] Step S602: Obtain the current gas direction at the gas inlet and the current feed direction at the feed port.

[0093] The current gas direction refers to the direction in which the gas in the gas inlet enters the processing furnace. Optionally, the current gas direction is determined based on the orientation of the gas inlet.

[0094] The current feeding direction refers to the direction in which the incinerated fly ash in the feed inlet enters the treatment furnace. The current feeding direction is determined based on the orientation of the feed inlet.

[0095] Step S603: Obtain the intersection position based on the current gas direction and the current feed direction.

[0096] For example, a gas flow path is set along the current gas direction, and the gas flow path is cylindrical. The radius of the gas flow path is positively correlated with the gas velocity in the gas inlet. A fly ash flow path is set along the current feed direction, and the fly ash flow path is cylindrical. The radius of the fly ash flow path is positively correlated with the flow velocity of the incinerated fly ash in the feed inlet. The intersection of the gas flow path and the fly ash flow path is taken as the intersection point.

[0097] Step S604: Determine whether the exhaust direction and the intersection position overlap.

[0098] If the exhaust direction coincides with the intersection position, then proceed to step S605; If the exhaust direction does not coincide with the intersection position, then proceed to step S606.

[0099] Step S605: If so, keep the exhaust direction unchanged.

[0100] If the exhaust direction coincides with the intersection, the incineration fly ash discharged through the circulation pipe will simultaneously disturb the incineration fly ash entering through the feed inlet and the gas entering through the gas inlet, so that the incineration fly ash and gas are fully mixed, which is conducive to the complete oxidation of dioxins in the incineration fly ash.

[0101] Step S606: If not, adjust the exhaust direction so that the confluence point is in the exhaust direction.

[0102] If the exhaust direction does not coincide with the intersection position, then adjust the exhaust direction according to the intersection position.

[0103] By adopting the above technical solution, after determining the current gas direction and the current feed direction and obtaining the intersection position, the exhaust direction of the circulation pipeline is adjusted so that the intersection position is in the exhaust direction. This allows the incineration fly ash discharged from the circulation pipeline to disturb the gas inlet and the feed inlet, so that the incineration fly ash entering the feed inlet is fully mixed with the gas entering the gas inlet.

[0104] In the following embodiments, because the incinerator fly ash contains solid particles, these particles accumulate at the bottom of the processing furnace, affecting the normal operation of the discharge port. Therefore, this application discloses a method for controlling a circulating pipeline. (Refer to...) Figure 7 The method includes: Step S701: Inhale incineration fly ash through the circulating feed inlet and close the circulating exhaust port.

[0105] For example, a valve is installed at the circulation exhaust port of the circulation pipeline, and the valve can be used to control the opening and closing of the circulation exhaust port.

[0106] Step S702: Monitor the real-time pressure data in the circulation pipeline.

[0107] When incineration fly ash is drawn in through the circulating feed inlet and the circulating exhaust outlet is closed, the gas in the circulating pipe will increase, but the volume of the circulating pipe remains unchanged. Therefore, the pressure in the circulating pipe increases over time.

[0108] Optionally, a pressure sensor is installed inside the circulation pipeline, through which real-time pressure data can be obtained.

[0109] Step S703: When the real-time pressure data is greater than the preset pressure data, adjust the air port direction of the circulating feed port to the second direction, with the second direction facing the discharge port.

[0110] The preset pressure data are preset empirical values, and technicians can adjust the specific values ​​of the preset pressure data according to actual needs.

[0111] In this step, the air inlet direction of the circulating feed port is adjusted to face the second direction of the discharge port. In subsequent steps, the gas can be discharged through the circulating feed port, causing the discharged gas to blow away the solid particles deposited at the bottom of the furnace, making it easier for these solid particles to leave the furnace.

[0112] Step S704: Control the discharge of incineration fly ash from the circulating feed inlet, so that the incineration fly ash is discharged from the circulating feed inlet through the air inlet.

[0113] Optionally, an air pump is installed in the circulation pipeline, and the air pump has a first operating mode and a second operating mode. In the first operating mode, the air pump can allow incinerator fly ash to enter from the circulation feed port and exit from the circulation exhaust port. In the second operating mode, the air pump can allow incinerator fly ash to enter from the circulation exhaust port and exit from the circulation feed port.

[0114] Furthermore, in this step, the air pump is controlled to enter the first working mode.

[0115] By adopting the above technical solution, the incineration fly ash is temporarily stored in the circulation pipeline, and when the real-time pressure data in the circulation pipeline is greater than the preset pressure data, the incineration fly ash is discharged from the circulation feed port, so that the incineration fly ash is discharged from the circulation feed port through the air port direction. This can remove the fly ash accumulated at the bottom of the treatment furnace and ensure the normal operation of the treatment furnace.

[0116] In the following embodiments, the treatment furnace needs to simultaneously introduce incinerator fly ash and gas. The gas oxidizes the dioxins in the incinerator fly ash to remove them. This application discloses a gas introduction method in a treatment furnace. (Refer to...) Figure 8 The method includes: Step S801: Obtain the hazardous waste content in the incineration fly ash and the second flow rate data of the incineration fly ash.

[0117] Optionally, hazardous waste content refers to the dioxin content in incineration fly ash. For example, the dioxin content in incineration fly ash can be analyzed using a gas analyzer before it is introduced into the treatment furnace.

[0118] Optionally, a flow sensor is installed at the feed inlet, through which second flow data can be obtained.

[0119] Step S802: Calculate the gas consumption per unit time based on the hazardous waste content and the second flow rate data.

[0120] Optionally, based on the hazardous waste content and the second flow rate data, the mass of hazardous waste entering the treatment furnace per unit time is obtained. Based on the aforementioned hazardous waste mass, the gas consumption per unit time corresponding to that mass is then calculated.

[0121] Step S803: Obtain the oxygen content of the gas at the gas inlet.

[0122] Optionally, a gas analyzer can be used to analyze the oxygen content of the gas at the gas inlet.

[0123] Step S804: Obtain the third flow rate data corresponding to the gas inlet based on the gas oxygen content and gas consumption.

[0124] For example, the ratio of gas consumption to gas oxygen content is calculated to obtain the third flow rate data.

[0125] Step S805: Adjust the gas flow rate at the gas inlet according to the third flow rate data.

[0126] After adjusting the gas flow rate at the gas inlet according to the third flow rate data, it can be ensured that the gas inlet provides sufficient oxygen, ensuring that the dioxins in the incineration fly ash can be completely oxidized.

[0127] By adopting the above technical solution, the gas consumption per unit time is calculated based on the hazardous waste content and the second flow rate data, thus quantifying the oxygen demand. Furthermore, a third flow rate data is dynamically generated by combining the oxygen content of the gas at the gas inlet, allowing for on-demand control of the oxygen injection rate.

[0128] Based on the same inventive concept, embodiments of this application provide a waste incineration fly ash treatment system. Please refer to [link / reference]. Figure 9 The system includes: The acquisition module 901 is used to acquire temperature data, first flow rate data, and second flow rate data. The memory 902 is used to store the program for the above-mentioned method of treating fly ash from waste incineration; The processor 903 can load and execute the program in the memory to implement the above-mentioned method for treating fly ash from waste incineration.

[0129] The fly ash is heated in a treatment furnace, with the temperature increasing from top to bottom. This process oxidizes dioxins in the fly ash at the top and solidifies heavy metals within the fly ash by encapsulating them in a glass mesh structure at the bottom. This method effectively removes dioxins and solidifies heavy metals from fly ash, achieving purification and ensuring that the fly ash meets emission standards.

[0130] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0131] This application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed as a method for processing fly ash from waste incineration.

[0132] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0133] Based on the same inventive concept, this application provides a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed to process fly ash from waste incineration.

[0134] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0135] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A method for treating fly ash from waste incineration, characterized in that, The method includes: introducing incinerated fly ash into a treatment furnace through a feed inlet located at the top of the treatment furnace; the minimum temperature inside the treatment furnace being greater than a preset temperature threshold; and a gas inlet being provided on the side of the treatment furnace; heating the incinerated fly ash through the treatment furnace, with the heating temperature increasing from top to bottom; conveying the incinerated fly ash to an adsorption chamber through a discharge outlet located at the bottom of the treatment furnace; and in the adsorption chamber, gas and incinerated fly ash undergo heat exchange followed by gas-solid separation to form hot gas and cooled incinerated fly ash. The processing furnace is provided with a circulation pipe on its side wall, the circulation pipe including a circulation inlet and a circulation outlet; the method further includes: acquiring temperature data inside the processing furnace; generating a current temperature distribution of the processing furnace based on the temperature data; determining whether there are any temperature anomalies in the processing furnace based on the current temperature distribution and a preset temperature distribution; if yes, opening the circulation pipe to allow the incineration fly ash to enter from the circulation inlet and exit from the circulation outlet; if no, repeating the determination step. Monitor the first flow rate data within the circulating pipeline; if the first flow rate data is less than a preset flow rate threshold, adjust the air outlet direction of the circulating exhaust port to a first direction, the first direction forming an acute angle with the vertically upward direction; control the incineration fly ash to be drawn into the circulating exhaust port and discharged from the circulating feed port; if the first flow rate data is greater than the preset flow rate threshold, control the incineration fly ash to be drawn into the circulating feed port and discharged from the circulating exhaust port. Obtain the exhaust direction of the circulating exhaust port; obtain the current gas direction of the gas inlet and the current feed direction of the feed inlet; obtain the intersection position based on the current gas direction and the current feed direction; determine whether the exhaust direction and the intersection position coincide; if yes, keep the exhaust direction unchanged; if no, adjust the exhaust direction so that the intersection position is located in the exhaust direction.

2. The method for treating fly ash from waste incineration according to claim 1, characterized in that, The circulating feed inlet is located near the bottom of the processing furnace, and the circulating exhaust outlet includes at least two outlets located at different heights within the processing furnace. The method further includes: acquiring first temperature data at the circulating exhaust outlet based on the current temperature distribution; determining target temperature data within the first temperature data based on preset temperature data, wherein the difference between the target temperature data and the preset temperature data is less than a preset temperature threshold; determining a target circulating exhaust outlet based on the target temperature data; and drawing in the incinerated fly ash through the circulating feed inlet and discharging the incinerated fly ash through the target circulating exhaust outlet.

3. The method for treating fly ash from waste incineration according to claim 1, characterized in that, The method further includes: drawing in the incinerated fly ash through the circulating feed inlet and closing the circulating exhaust port; monitoring real-time pressure data in the circulating pipeline; when the real-time pressure data is greater than a preset pressure data, adjusting the air outlet direction of the circulating feed inlet to a second direction, the second direction being towards the discharge port; controlling the circulating feed inlet to discharge the incinerated fly ash, so that the incinerated fly ash is discharged from the circulating feed inlet through the air outlet direction.

4. The method for treating fly ash from waste incineration according to claim 1, characterized in that, The method further includes: obtaining the hazardous waste content in the incineration fly ash and the second flow rate data of the incineration fly ash; calculating the gas consumption per unit time based on the hazardous waste content and the second flow rate data; obtaining the oxygen content of the gas at the gas inlet; obtaining the third flow rate data corresponding to the gas inlet based on the oxygen content and the gas consumption; and adjusting the gas flow rate of the gas inlet according to the third flow rate data.

5. A system for treating fly ash from waste incineration, characterized in that, The system is used to perform the waste incineration fly ash treatment method as described in any one of claims 1 to 4, comprising: an acquisition module for acquiring temperature data, first flow rate data, and second flow rate data; a memory for storing a program for the waste incineration fly ash treatment method; and a processor, wherein the program in the memory can be loaded and executed by the processor to implement the waste incineration fly ash treatment method.

6. A smart terminal, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer program is stored that can be loaded by a processor and executed as described in any one of claims 1 to 4.

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