A system and method for processing solid waste

Abstract

The embodiment of the application discloses a kind of solid waste acid-base reaction system and processing method, processing system includes solid transmission device, liquid transmission device, reaction kettle, first metering device and second metering device, first metering device includes first weight detection meter and second weight detection meter, second metering device includes first liquid volume detection meter and second liquid volume detection meter, first liquid volume detection meter is located in the liquid transmission device, and second liquid volume detection meter is located in the reaction kettle.The embodiment of the application can be realized at different positions on the transmission route of solid transmission device Secondary weighing of solid waste, and secondary liquid volume detection of liquid material at different positions on the transmission route of liquid transmission device, to evaluate the residue of solid waste and liquid material on the transmission route, and the processing system can be optimized design in combination with the evaluation data.

Description

Technical Field

[0001] This application relates to the field of solid waste treatment technology, and in particular to a solid waste treatment system and treatment method. Background Technology

[0002] Solid waste refers to solid and mud-like substances discarded by humans in production and daily life activities, including solid particles separated from wastewater and exhaust gases. In any production or daily life process, owners often only utilize certain effective components of raw materials, commodities, or consumer goods. However, most solid waste, which no longer has any use value for its original owner, still contains components needed by other production industries. Through certain technical processes, it can be transformed into production raw materials for relevant departments or industries, or even used directly.

[0003] Solid waste treatment systems refer to the appropriate processing of solid waste to extract its useful components. However, some treatment systems in related technologies suffer from material waste due to structural design flaws. Summary of the Invention

[0004] This application provides a solid waste treatment system and method to solve the problem of material waste caused by structural design defects in related technologies.

[0005] In a first aspect, embodiments of this application provide a solid waste treatment system, comprising:

[0006] Solid transport device for transporting solid waste;

[0007] Liquid transfer device, used to transfer liquid materials;

[0008] The reaction vessel is connected to both the solid transfer device and the liquid transfer device, and is used to receive the solid waste transferred by the solid transfer device and the liquid material transferred by the liquid transfer device, and to react the solid waste and the liquid material to obtain the product;

[0009] The first metering device includes a first weight detector and a second weight detector. The first weight detector is disposed on the solid transfer device, and the second weight detector is disposed on the solid transfer device and spaced apart from the first weight detector, or the second weight detector is disposed on the reaction vessel.

[0010] The second metering device includes a first liquid volume meter and a second liquid volume meter, wherein the first liquid volume meter is located in the liquid transfer device and the second liquid volume meter is located in the reaction vessel.

[0011] Optionally, the solid-state transport device includes:

[0012] The first weight detector is located at the first outlet of the feeder;

[0013] A conveyor is disposed between the feeder and the reactor and is configured to correspond to the first outlet of the feeder and the first inlet of the reactor. It is used to convey solid waste in the feeder to the reactor through the first outlet and the first inlet. The second weight detector is disposed on the conveyor near the reactor.

[0014] Optionally, the transmitting element includes:

[0015] A conveyor belt is provided corresponding to the first outlet of the feeder;

[0016] A transfer hopper is located between the conveyor belt and the reactor to transfer solid waste from the conveyor belt into the reactor. The second weight detector is located on the transfer hopper.

[0017] Optionally, the liquid transfer device includes:

[0018] Storage tanks;

[0019] A connecting pipeline is provided to connect the second outlet of the storage tank and the second inlet of the reaction vessel, for transferring the liquid material in the storage tank to the reaction vessel via the second outlet and the second inlet;

[0020] The first liquid level detector includes a first level gauge located inside the storage tank and / or a first flow meter located at the second outlet of the storage tank, and the second liquid level detector includes a second level gauge located inside the reactor and / or a second flow meter located at the second inlet of the reactor.

[0021] Optionally, it also includes:

[0022] A temperature detector is installed inside the reactor to detect the temperature value inside the reactor.

[0023] A pH detector is installed inside the reaction vessel to detect the pH value inside the reaction vessel.

[0024] A third liquid level detector is installed inside the reactor to detect the liquid level value inside the reactor.

[0025] The controller is electrically connected to the temperature detector, the pH detector, and the third liquid level detector. It is used to heat and stir the material in the reactor when the temperature value detected by the temperature detector is within a preset temperature range, the pH value detected by the pH detector is within a preset pH range, and the liquid level value detected by the third liquid level detector is within a preset liquid level range, so that the solid waste in the reactor reacts with the liquid material to obtain the product.

[0026] Optionally, the controller is further configured to heat and stir the material in the reactor when the temperature value detected by the temperature detector is lower than a preset temperature range;

[0027] The controller is also used to stop the operation of the solid waste treatment system when the pH value detected by the pH detector is outside the preset pH range and the liquid level value detected by the third liquid level detector is outside the preset liquid level range.

[0028] Optionally, it also includes:

[0029] A solid-liquid separation device is connected to the outlet of the reactor and is used to receive the product in the reactor after the solid waste and liquid materials in the reactor have reacted, and to perform solid-liquid separation on the product.

[0030] Optionally, the controller is further configured to close the outlet of the reactor after the third liquid level detector detects that the liquid level in the reactor has stabilized, and to control the solid-liquid separation device to start.

[0031] Secondly, this application provides a method for treating solid waste, comprising:

[0032] Solid waste is transferred to the reactor via a solid transfer device. The weight of the solid waste on the solid transfer device is detected by a first weight meter, and the weight of the solid waste added to the reactor is detected by a second weight meter.

[0033] The liquid material is transferred to the reaction vessel via a liquid transfer device. The liquid volume of the liquid material on the liquid transfer device is detected by a first liquid volume meter, and the liquid volume of the liquid material added to the reaction vessel is detected by a second liquid volume meter.

[0034] When the weight detected by the second weight detector is within a preset weight range and the liquid volume detected by the liquid volume detector is within a preset liquid volume range, the solid waste in the reactor reacts with the liquid material to obtain the product.

[0035] When the difference between the weight detected by the first weight detector and the weight detected by the second weight detector is outside the first error range, the solid transport device is optimized.

[0036] When the difference between the liquid volume detected by the first liquid volume meter and the liquid volume detected by the second liquid volume meter is outside the second error range, the liquid transfer device is optimized.

[0037] Optionally, before the solid waste and liquid materials react in the reactor, the following steps are also included:

[0038] The temperature inside the reactor is detected by a temperature detector, the pH value inside the reactor is detected by a pH detector, and the liquid level inside the reactor is detected by a third liquid level detector. When the temperature detected by the temperature detector is within a preset temperature range, the pH value detected by the pH detector is within a preset pH range, and the liquid level detected by the third liquid level detector is within a preset liquid level range, the material inside the reactor is heated and stirred, so that the solid waste inside the reactor reacts with the liquid material.

[0039] The solid waste treatment system and method of this application can perform secondary weighing of solid waste at different locations along the transmission route of the solid conveying device and secondary liquid volume detection of liquid materials at different locations along the transmission route of the liquid conveying device. This allows for the assessment of the residue of solid waste and liquid materials along the transmission route, and the treatment system can be optimized based on the assessment data to reduce material waste and prevent material accumulation on the output route from affecting the operation. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic block diagram of the solid waste treatment system provided in the embodiments of this application;

[0042] Figure 2 This is a schematic flowchart of a solid waste treatment method provided in an embodiment of this application;

[0043] Figure 3 This is another schematic flowchart of the solid waste treatment method provided in the embodiments of this application.

[0044] Explanation of reference numerals in the attached drawings: 100, solid waste treatment system; 110, solid conveying device; 111, feeder; 112, conveyor belt; 113, transfer hopper; 120, liquid conveying device; 121, storage tank; 122, connecting pipeline; 130, reaction vessel; 140, solid-liquid separation device. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0046] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0047] Please see Figure 1 This application provides a solid waste treatment system 100 that can realize the resource utilization of aluminum ash in acid-alkali hydrometallurgy.

[0048] Specifically, the solid waste treatment system 100 includes a solid transfer device 110, a liquid transfer device 120, a reaction vessel 130, a solid-liquid separation device 140, a first metering device, and a second metering device.

[0049] The solid transfer device 110 is used to transfer solid waste to the reactor 130. The solid waste can be aluminum ash, fly ash, etc., and this embodiment does not limit the specific type. The solid transfer device 110 may include a feeder 111 and a conveyor. The feeder 111 may be a twin-screw feeder, used to thoroughly grind the solid waste. The conveyor is located between the feeder 111 and the reactor 130, used to transport the solid waste from the feeder 111 to the reactor 130. Specifically, the conveyor may include a conveyor belt 112 and a transfer hopper 113. The conveyor belt 112 may be positioned corresponding to the first outlet of the feeder 111, used to receive the solid waste transferred from the first outlet of the feeder 111. The transfer hopper 113 is located between the conveyor belt 112 and the reactor 130, used to further transfer the solid waste on the conveyor belt 112 to the first inlet of the reactor 130, and then into the reactor 130 through the first inlet.

[0050] Optionally, the material conveying process of solid waste can be automated and interlocked. For example, the opening of the first outlet of the feeder 111 and the opening of the conveyor belt 112 are interlocked, and the two are opened simultaneously to weigh the material at the same time. The solid waste is weighed a second time in the transfer hopper 113. The two weighings will be explained in detail below.

[0051] Optionally, the feeding of the feeder 111 can be quantitatively controlled by a preset program, for example, by PLC automation. Of course, manual control can also be switched in an emergency. The feeding process of the feeder 111 can be adjusted according to the PID control principle, with a deviation from the preset amount not exceeding ±0.5L. During the feeding stage, the material in the ton bag can be poured into the feeder 111 manually.

[0052] The liquid transfer device 120 is used to transfer liquid materials to the reaction vessel 130. The liquid materials can be at least one of an acidic solution, an alkaline solution, and water; this embodiment does not limit the specific type. The liquid transfer device 120 may include a storage tank 121 and a connecting pipeline. The storage tank 121 may include at least one of an acidic storage tank 121 for storing acidic solutions, an alkaline storage tank 121 for storing alkaline solutions, and a water storage tank 121 for storing water. The acidic storage tank 121 may be made of PP material, and the alkaline storage tank may be made of stainless steel. The connecting pipeline connects the second outlet of the storage tank 121 to the second inlet of the reaction vessel 130, and is used to transfer the liquid materials in the storage tank 121 to the reaction vessel 130 via the second outlet and the second inlet.

[0053] Optionally, the feed of the liquid transfer device 120 can be quantitatively controlled by a preset program. For example, the feed rate can be controlled by a centrifuge. This process also includes secondary liquid volume detection, which uses a liquid volume detector such as an electromagnetic flow meter to detect and display the amount of liquid dispensed. The two liquid volume detections will be described in detail below. The embodiments of this application adopt the feature of preset programs in process control, allowing the feed rate and required process parameters to be pre-input, and the program to start running and self-adjust automatically.

[0054] The feeding sequence in this embodiment is controllable. It can be determined according to the requirements of the reactants, the characteristics of the materials, and either by a preset program or manually. For example, it can be determined whether solids and liquids are fed sequentially or simultaneously. Optionally, by default, the feeding sequence of solid waste and liquid materials is that solid waste is fed first, and the corresponding feeding of liquid materials only begins after the solid waste feeding is completed. However, in special circumstances, a synchronization mode can be activated to start the solid and liquid feeding simultaneously, ensuring that solids and liquids enter the reactor 130 at the same time to start the reaction.

[0055] The reaction vessel 130 is used to receive solid waste transported by the solid transfer device 110 and liquid material transported by the liquid transfer device 120, and to react the solid waste and liquid material to obtain a product. It should be noted that the product obtained by reacting solid waste and liquid material in this embodiment can be reused, improving resource utilization and reducing environmental pollution.

[0056] For example, when the solid waste is aluminum ash, hydrochloric acid solution or similar liquid materials can be used to achieve wet acid-base leaching reaction in the resource utilization of aluminum ash. This allows the solids in the product obtained after the reaction of solid waste and liquid materials to be processed into refractory materials through processes such as drying, mixing, molding, drying, and sintering, while the liquids in the product can be transported to storage tank 121, realizing the resource utilization of aluminum ash without secondary solid waste and waste liquid discharge, which has good economic and social value.

[0057] The reaction vessel 130 can be a tank-type reaction vessel 130, which may include inner and outer layers. The inner layer is where the contents are processed, and the outer layer can be made of carbon steel. Specifically, an enamel-lined inner wall can be used in acidic environments, while carbon steel can be used in alkaline environments. The reaction vessel 130 may be equipped with a stirring paddle for stirring within the reaction vessel 130. A motor is mounted on the upper end of the stirring paddle to drive its rotation. The motor speed can be set by a controller, which can automatically adjust the motor to achieve uniform stirring.

[0058] The solid-liquid separation device 140 is connected to the discharge port of the reactor 130. It is used to receive the products from the reactor 130 after the reaction of solid waste and liquid materials is complete, and to perform solid-liquid separation on the products. For example, when the solid is aluminum ash and the liquid is hydrochloric acid solution, the solid in the products can be separated by the solid-liquid separation device 140 and pumped into a waste residue tank. The waste residue tank has an openable funnel at the bottom to discharge the waste residue and automatically shape and store it. Alternatively, it can be processed into refractory materials through drying, mixing, molding, drying, and sintering. The liquid in the products is separated by the solid-liquid separation device 140 and transported to the storage tank 121 for future use. Optionally, the solid-liquid separation device 140 is started after the liquid level in the reactor 130 has stabilized and the discharge port of the reactor 130 has been closed.

[0059] It should be noted that the liquid material in the storage tank 121 of the liquid transfer device 120 can be transferred to the reaction vessel 130 under the action of the first driving element (e.g., centrifuge), and the reactants in the reaction vessel 130 can be transferred to the solid-liquid separation device 140 under the action of the second driving element (e.g., centrifuge) to ensure the normal operation of the processing steps. The opening of the second driving element and the closing of the discharge port of the reaction vessel 130 are interlocked and carried out simultaneously.

[0060] It should be noted that when the relevant reaction in reactor 130 is completed, the outlet of reactor 130 can also be directly connected to a storage device instead of the solid-liquid separation device 140, for use in pumping the mixed slurry in reactor 130 into the storage device for storage via the second drive unit. The opening of the second drive unit is interlocked with the closing of the outlet of reactor 130, and the two are performed simultaneously.

[0061] The first metering device includes a first weight detector and a second weight detector. The first weight detector is located in the solid transport device 110, and the second weight detector is located in the solid transport device 110 and spaced apart from the first weight detector, or the second weight detector is located in the reaction vessel 130. That is, by setting two weight detectors on the transport path of the solid transport device 110, it is possible to perform secondary weighing of solid waste at different locations on the transport path to assess the residue of solid waste on the transport path. Based on this assessment data, the solid waste treatment system 100 can be optimized to reduce material waste in the treatment system and prevent material accumulation on the output path from affecting the operation.

[0062] Specifically, when the difference between the weight detected by the first weight detector and the weight detected by the second weight detector is outside the first error range, there is a large amount of solid waste remaining on the transmission route, and the solid waste transmission device 110 can be optimized. Conversely, when the difference between the weight detected by the first weight detector and the weight detected by the second weight detector is within the first error range, there is less solid waste remaining on the transmission route, and the solid waste transmission device 110 does not require processing.

[0063] The first error range can be preset by the system or set manually; this embodiment does not limit this. The optimized design of the solid conveying device 110 can include optimizing the inclination of the conveyor belt 112 and the roughness of its conveying surface to facilitate solid waste transportation. A steeper conveyor belt 112 makes it less likely for solid waste to accumulate on it, and a rougher conveying surface makes it easier for solid waste to be transported backwards without slipping and accumulating.

[0064] Preferably, the first weight sensor is installed at the first outlet of the feeder 111 or on the conveyor belt 112, and can detect the weight of the solid waste reduced by the feeder 111; the second weight sensor is installed on the transfer hopper 113, and can detect the weight of the solid waste added to the transfer hopper 113. The first and second weight sensors can be pressure sensors.

[0065] The second metering device includes a first liquid level meter and a second liquid level meter. The first liquid level meter is located in the liquid transfer device 120, and the second liquid level meter is located in the reaction vessel 130. That is, by installing two liquid level meters on the transfer path of the liquid transfer device 120, secondary liquid level detection of the liquid material can be performed at different locations along the transfer path. This allows for the assessment of liquid material residue on the transfer path, and the combined assessment data can be used to optimize the design of the solid waste treatment system 100, thereby reducing material waste and preventing material accumulation on the output path from affecting operation.

[0066] Specifically, when the difference between the liquid volume detected by the first liquid volume meter and the liquid volume detected by the second liquid volume meter is outside the second error range, there is a large amount of residual liquid material on the transmission route, and the liquid transmission device 120 can be optimized. Conversely, when the difference between the liquid volume detected by the first liquid volume meter and the liquid volume detected by the second liquid volume meter is within the first error range, there is a small amount of residual liquid material on the transmission route, and the liquid transmission device 120 does not require any processing.

[0067] The second error range can be preset by the system or set manually; this application embodiment does not limit this. The optimized design of the liquid transfer device 120 can include optimizing the inclination of the connecting pipe, the smoothness of the inner wall surface of the connecting pipe, etc., to facilitate the transport of liquid materials. The steeper the connecting pipe, the less likely the liquid material is to accumulate on it; the smoother the inner wall surface of the connecting pipe, the easier it is for the liquid material to be transported backward under the transport of the connecting pipe, and the less likely it is to remain and accumulate.

[0068] Optionally, the first liquid level meter includes a first level gauge located in the storage tank 121 and / or a first flow meter located at the second outlet of the storage tank 121, and the second liquid level meter includes a second level gauge located in the reactor 130 and / or a second flow meter located at the second inlet of the reactor 130.

[0069] Preferably, the first liquid level detector includes a first level gauge and a first flow meter, and the second liquid level detector includes a second level gauge and a second flow meter. The first level gauge detects the liquid level in the storage tank 121, and the change in the liquid level in the storage tank 121 indicates the volume of liquid material output from the storage tank 121. The second level gauge detects the liquid level in the reaction vessel 130, and the change in the liquid level in the reaction vessel 130 indicates the volume of liquid material added to the reaction vessel 130. The difference between the volume of liquid material output from the storage tank 121 and the volume of liquid material added to the reaction vessel 130 indicates the amount of liquid material remaining on the transmission route. The flow meter can statistically analyze the volume of liquid flowing through the connecting pipeline at the flow meter location. Combined with the first and second level gauges, liquid volume detection can be achieved at more than three points along the transmission route, enabling the analysis of segmented residual material detection in the connecting pipeline, which is beneficial for subsequent design optimization.

[0070] This application adopts a mechanism of dual detection of the same index to ensure that various indicators such as flow rate, liquid level and quality are detected at the discharge and feed stages during the material conveying process. This can solve the problem of inaccurate material balance of process reaction flow rate, liquid level and quality indicators, improve the accuracy of reaction index detection and ensure the safety of reaction process indicators.

[0071] Optionally, the material conveying process in this embodiment can be automated and interlocked. For example, during the feeding and conveying stage of liquid materials, the first level gauge will detect the liquid level in the storage tank 121 in real time. Based on the injection volume of the first drive unit set in the program and the liquid level in the reaction vessel 130 detected by the second level gauge, the first drive unit can be turned off after a period of time to stop the conveying of liquid materials into the reaction vessel 130. As another example, during the feeding and conveying stage of solid waste materials, the opening of the first metering device is connected to the opening of the first outlet of the feeder 111. When the outlet of the feeder 111 opens, the conveyor will start operating simultaneously.

[0072] Optionally, the solid waste treatment device further includes a temperature detector, a pH detector, a third liquid level detector, and a controller. The temperature detector is located inside the reactor 130 to detect the temperature value inside the reactor 130; the pH detector is located inside the reactor 130 to detect the pH value inside the reactor 130; and the third liquid level detector is located inside the reactor 130 to detect the liquid level value inside the reactor 130. The controller is electrically connected to the temperature detector, pH detector, and third liquid level detector. When the temperature detected by the temperature detector is within a preset temperature range, the pH detected by the pH detector is within a preset pH range, and the liquid level detected by the third liquid level detector is within a preset liquid level range, the controller heats and stirs the material inside the reactor 130, causing the solid waste to react with the liquid material to obtain the product. The reactor 130 is equipped with independent temperature detectors, liquid level detectors, and pH detectors, enabling multi-index detection in a single reaction. All of the above controls can be implemented using DCS control. The embodiments of this application can measure the temperature, liquid level, and pH of the reactor 130 in real time during the reaction process and plot the change curves, which can provide specific operating condition information for the reactor 130 and provide a data basis for the smooth progress of the reaction.

[0073] Optionally, the temperature detector can acquire, control, and self-regulate the temperature within the reactor 130. For example, when the temperature detected by the temperature detector is lower than a preset temperature range, the materials within the reactor 130 can be heated and stirred to control and self-regulate the temperature within the reactor 130. Temperature data acquisition includes: acquiring the temperature of the reactants through a temperature probe installed at the bottom flange of the reactor 130; acquiring the temperature of the gas at the top of the reactor 130 through a temperature probe installed at the top flange of the reactor 130; and acquiring the jacket temperature through a temperature probe connected to the jacket of the reactor 130. The real-time temperature information acquired above can be displayed via communication and stored in the reactor 130 controller. The deviation between the temperature information fed back by the above probes and the preset temperature range is adjusted by a PID controller to control the operation of the electric heating device in the jacket.

[0074] Optionally, the reactor 130 may be equipped with multiple sets of electric heating devices, and the reactor may be heated by an oil bath. For example, it may be equipped with six sets of electric heating devices, which may be heat-conducting rods, etc., but this embodiment does not limit this.

[0075] Specifically, when the temperature of the reactant detected by the temperature detector is much lower than the preset temperature range, all six sets of electric heating devices can be turned on; when the temperature of the reactant is much higher than the preset temperature range, the electric heating devices can be paused; and when the temperature of the reactant is slightly lower than the preset temperature range, some of the electric heating devices can be turned on.

[0076] It should be noted that the temperature data at the bottom of reactor 130 is closest to the actual reactant temperature. Therefore, the preset temperature required for the wet process should primarily be based on the value of the bottom temperature probe. The temperature inside the jacket will be slightly higher than the temperature inside reactor 130; the upper limit of temperature control can be based on the jacket temperature. Reactor 130 has a self-regulating temperature function, meaning that once the temperature reaches the preset temperature range (when the temperature reaches a steady state), it maintains this constant temperature. It also has a function to automatically adjust and return to the preset temperature range under disturbance conditions (heat dissipation, excessive electric heating power), and this function also includes PID control.

[0077] Optionally, the third liquid level detector can realize liquid level acquisition, liquid level interlocking, and liquid level warning in the reactor 130. The third liquid level detector can be the same liquid level gauge as the second liquid level gauge in the reactor 130. After detecting that the liquid level in the reactor 130 has reached the preset liquid level, it can stop the delivery of liquid materials into the reactor 130; after detecting that the liquid level in the reactor 130 exceeds the preset liquid level, it can issue an alarm message.

[0078] Optionally, the third liquid level detector can be a radar liquid level gauge, which is installed at the top of the reactor 130 and extends to the upper part of the inner jacket of the reactor 130. It can obtain the liquid level height in the reactor in real time, record the liquid level change curve, store historical liquid levels, and provide liquid level warnings. The radar level gauge can measure the distance from the top of the reactor 130 to the upper surface of the reactant to obtain the real-time liquid level of the reactor 130. The deviation of the liquid level data obtained by the radar level gauge can be controlled within a very small range. Based on this feature, the feeding and discharging of the reactor 130 can be controlled by the liquid level interlock. Specifically: when the feeding process of the reactor 130 ends, the liquid level measured by the radar level gauge no longer increases or fluctuates. After the liquid level feedback data stabilizes at a specific value, the interlock reactor 130 control system automatically closes the feed port of the reactor 130 (e.g., the first inlet and the second inlet); when the discharging process of the reactor 130 ends, the liquid level measured by the radar level gauge no longer decreases or fluctuates. After the liquid level feedback data stabilizes at a specific value, the interlock reactor 130 control system automatically closes the discharge port of the reactor 130.

[0079] The liquid level warning is set by the control system of reactor 130 to set the upper limit of the preset liquid level range of reactor 130. When the data fed back by the radar liquid level gauge is higher than this upper limit, the feed port of reactor 130 will be automatically shut off and the electric heating and stirring functions of reactor 130 will be suspended. At the same time, a warning message will be sent to the operator.

[0080] Optionally, a pH detector can be used to acquire and record the pH value within the reactor 130 in real time. The pH detector can be installed at the side opening of the reactor 130, with the probe inserted into the reactor 130 to analyze the pH of the contents in real time. An online pH detector access clip is provided on one side of the reactor 130. When the reaction requires pH measurement, the pH test probe is manually inserted beforehand, and the measured value is fed back to the reactor 130 control system in real time.

[0081] Optionally, the controller is also used to stop the operation of the solid waste treatment system 100 when the pH value detected by the pH detector is outside the preset pH range and the liquid level value detected by the third liquid level detector is outside the preset liquid level range, so as to avoid conducting experiments under conditions that do not meet the experimental requirements and thus causing waste.

[0082] The embodiments of this application can improve the control level and detection accuracy in the reaction, enhance the unmanned control level of this type of technology, and reduce the uncontrollable risks caused by manual operation. The embodiments of this application can extract high-value-added products from industrial solid waste through wet processes. Due to its high degree of automation and the ability to detect multiple indicators, it can serve as a pilot-scale platform for discontinuous acid-base wet reactions, typically using aluminum ash, at the 100-ton level, thus improving the resolution of inaccuracies and data lags in reaction control. The processing system of the embodiments of this application can be equipped with various reaction devices, and several individual devices can be selected to form a reaction device sequence under specific environments and processes.

[0083] Secondly, please refer to Figure 2 This application provides a method for treating solid waste. Specifically, this method can be a method corresponding to the aforementioned solid waste treatment device, and the method includes:

[0084] S02. The solid waste is transferred to the reactor 130 via the solid transfer device 110. The weight of the solid waste on the solid transfer device 110 is detected by the first weight detector, and the weight of the solid waste added to the reactor 130 is detected by the second weight detector.

[0085] S04. The liquid material is transferred to the reactor 130 via the liquid transfer device 120. The liquid volume of the liquid material on the liquid transfer device 120 is detected by the first liquid volume detector, and the liquid volume of the liquid material added to the reactor 130 is detected by the second liquid volume detector.

[0086] S06. When the weight detected by the second weight detector is within the preset weight range and the liquid volume detected by the second liquid volume detector is within the preset liquid volume range, the solid waste in the reactor 130 reacts with the liquid material to obtain the product.

[0087] S08. When the difference between the weight detected by the first weight detector and the weight detected by the second weight detector is outside the first error range, the solid transfer device 110 is optimized.

[0088] S10. When the difference between the liquid volume detected by the first liquid volume detector and the liquid volume detected by the second liquid volume detector is outside the second error range, the liquid transfer device 120 is optimized.

[0089] It should be noted that steps S02 and S04 can be performed in the following order: S02 first, then S04; or S04 first, then S02; or S02 and S04 can be performed simultaneously. Similarly, steps S08 and S10 can be performed in the following order: S08 first, then S10; or S10 first, then S08; or S08 and S10 can be performed simultaneously. Steps S08 and / or S10 can be performed before the reaction between the solid waste and liquid material in step S06, allowing the use of the optimized solid transfer device 110 and / or the optimized liquid transfer device 120 during this reaction, thus reducing material residue in the channel during this experiment. Steps S08 and / or S10 can also be performed after step S06, allowing the use of the optimized solid transfer device 110 and / or the optimized liquid transfer device 120 in the next experiment, further reducing material residue in the channel.

[0090] Optionally, before the solid waste and liquid materials react within the reactor 130, the following steps are also included:

[0091] S05. The temperature value inside the reactor 130 is detected by a temperature detector, the pH value inside the reactor 130 is detected by a pH detector, and the liquid level value inside the reactor 130 is detected by a third liquid level detector. When the temperature value detected by the temperature detector is within a preset temperature range, the pH value detected by the pH detector is within a preset pH range, and the liquid level value detected by the third liquid level detector is within a preset liquid level range, the material inside the reactor 130 is heated and stirred so that the solid waste and liquid material inside the reactor 130 react.

[0092] Optionally, combined Figure 3Before a specific reaction test, the program can receive the user's required testing process task. Based on the technical process characteristics and the specific reactant quality, it selects suitable reaction equipment for the reaction (or test) and generates a corresponding process flow diagram. The program will retrieve the relevant process flow and parameters from a pre-set process scheme database based on the test requirements and the parameters of the analyte. It will automatically generate the required process parameters, feed and discharge rates, reaction temperature, pressure, reaction time, and pH for each step of the reaction, automatically generate warning limits, and then carry out the reaction according to the pre-set program design. For example, before the reaction begins, at the request of the reactant, the required material quantities and process parameters of the materials will be input into the pre-set reaction program.

[0093] Optionally, the reaction process is carried out in the reactor 130, during which multiple indicators such as liquid level, temperature, and pH can be acquired. When the liquid level, temperature, and pH change rapidly, the HH and LL indicators can be activated for early warning, and the reaction can be shut down immediately.

[0094] Optionally, after the reaction is completed, the product in the reaction vessel 130 is pre-programmed and pumped into a solid-liquid separation device 140. The solid-liquid separation device 140 can be a plate-and-frame or flat-pan type, depending on the properties of the reactants. This device, controlled automatically, features a funnel-shaped opening at the bottom to discharge and automatically shape and store the residue. The physical properties of the reactants are specifically reflected in the particle size, hardness, and whether they possess a porous structure.

[0095] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0096] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A method for treating solid waste, characterized in that, include: Solid waste is transferred to the reactor via a solid transfer device. The weight of the solid waste on the solid transfer device is detected by a first weight meter, and the weight of the solid waste added to the reactor is detected by a second weight meter. The liquid material is transferred to the reaction vessel via a liquid transfer device. The liquid volume of the liquid material on the liquid transfer device is detected by a first liquid volume meter, and the liquid volume of the liquid material added to the reaction vessel is detected by a second liquid volume meter. When the weight detected by the second weight detector is within a preset weight range and the liquid volume detected by the second liquid volume detector is within a preset liquid volume range, the solid waste in the reactor reacts with the liquid material to obtain the product. When the difference between the weight detected by the first weight detector and the weight detected by the second weight detector is outside the first error range, the solid transport device is optimized. When the difference between the liquid volume detected by the first liquid volume meter and the liquid volume detected by the second liquid volume meter is outside the second error range, the liquid transfer device is optimized.

2. The method for treating solid waste according to claim 1, characterized in that, Before the solid waste reacts with the liquid material in the reactor, the following is also included: The temperature inside the reactor is detected by a temperature detector, the pH value inside the reactor is detected by a pH detector, and the liquid level inside the reactor is detected by a third liquid level detector. When the temperature detected by the temperature detector is within a preset temperature range, the pH value detected by the pH detector is within a preset pH range, and the liquid level detected by the third liquid level detector is within a preset liquid level range, the material inside the reactor is heated and stirred, so that the solid waste inside the reactor reacts with the liquid material.

3. The method for treating solid waste according to claim 1 or 2, characterized in that, The treatment method is applied to a solid waste treatment system, the treatment system comprising: Solid transport device for transporting solid waste; Liquid transfer device, used to transfer liquid materials; The reaction vessel is connected to both the solid transfer device and the liquid transfer device, and is used to receive the solid waste transferred by the solid transfer device and the liquid material transferred by the liquid transfer device, and to react the solid waste and the liquid material to obtain the product; The first metering device includes a first weight detector and a second weight detector. The first weight detector is disposed on the solid transfer device, and the second weight detector is disposed on the solid transfer device and spaced apart from the first weight detector, or the second weight detector is disposed on the reaction vessel. The second metering device includes a first liquid volume meter and a second liquid volume meter, wherein the first liquid volume meter is located in the liquid transfer device and the second liquid volume meter is located in the reaction vessel.

4. The method for treating solid waste according to claim 3, characterized in that, The solid-state transport device includes: The first weight detector is located at the first outlet of the feeder; A conveyor is disposed between the feeder and the reactor and is configured to correspond to the first outlet of the feeder and the first inlet of the reactor. It is used to convey solid waste in the feeder to the reactor through the first outlet and the first inlet. The second weight detector is disposed on the conveyor near the reactor.

5. The method for treating solid waste according to claim 4, characterized in that, The transmitting device includes: A conveyor belt is provided corresponding to the first outlet of the feeder; A transfer hopper is located between the conveyor belt and the reactor to transfer solid waste from the conveyor belt into the reactor. The second weight detector is located on the transfer hopper.

6. The method for treating solid waste according to claim 3, characterized in that, The liquid transfer device includes: Storage tanks; A connecting pipeline is provided to connect the second outlet of the storage tank and the second inlet of the reaction vessel, for transferring the liquid material in the storage tank to the reaction vessel via the second outlet and the second inlet; The first liquid level detector includes a first level gauge located inside the storage tank and / or a first flow meter located at the second outlet of the storage tank, and the second liquid level detector includes a second level gauge located inside the reactor and / or a second flow meter located at the second inlet of the reactor.

7. The method for treating solid waste according to claim 3, characterized in that, Also includes: A temperature detector is installed inside the reactor to detect the temperature value inside the reactor. A pH detector is installed inside the reaction vessel to detect the pH value inside the reaction vessel. A third liquid level detector is installed inside the reactor to detect the liquid level value inside the reactor. The controller is electrically connected to the temperature detector, the pH detector, and the third liquid level detector. It is used to heat and stir the material in the reactor when the temperature value detected by the temperature detector is within a preset temperature range, the pH value detected by the pH detector is within a preset pH range, and the liquid level value detected by the third liquid level detector is within a preset liquid level range, so that the solid waste in the reactor reacts with the liquid material to obtain the product.

8. The method for treating solid waste according to claim 7, characterized in that, The controller is also used to heat and stir the material in the reactor when the temperature value detected by the temperature detector is lower than the preset temperature range; The controller is also used to stop the operation of the solid waste treatment system when the pH value detected by the pH detector is outside the preset pH range and the liquid level value detected by the third liquid level detector is outside the preset liquid level range.

9. The method for treating solid waste according to claim 7, characterized in that, Also includes: A solid-liquid separation device is connected to the outlet of the reactor and is used to receive the product in the reactor after the solid waste and liquid materials in the reactor have reacted, and to perform solid-liquid separation on the product.

10. The method for treating solid waste according to claim 9, characterized in that, The controller is also used to close the outlet of the reactor after the third liquid level detector detects that the liquid level in the reactor is stable, and to control the solid-liquid separation device to start.

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