Treatment system for powdery solid waste

Abstract

The utility model discloses a powdery solid waste treatment system which comprises an equipment unit, the equipment unit comprises an elution module, the elution module comprises a pulping device, a liquid washing device, a first filtering device and a slag conveying device, an outlet of the pulping device is communicated with an inlet of the first filtering device, and an outlet of the liquid washing device is communicated with an outlet of the slag conveying device. The first filtering device is provided with a slag discharging part, the slag conveying device is used for receiving slag discharged by the first filtering device through the slag discharging part, the slag conveying device is further used for conveying the slag into the liquid washing device, and the liquid washing device is communicated with the first filtering device; the number of the pulping device, the number of the liquid washing device and the number of the first filtering device are all one. The pulping device is used for executing a first liquid washing sub-process, the liquid washing device is used for executing other liquid washing sub-processes, and the first filtering device is used for executing first filtering sub-processes. The number of devices included in the treatment system is relatively small, the requirement for installation occupied space can be reduced, and application and popularization are facilitated.

Description

[0001] This utility model claims priority to Chinese Patent Application No. 2025100578378, filed on January 14, 2025, entitled "Pretreatment Chamber and Application Method Based on Intelligent Washing and Separation of Solid Waste". Technical Field

[0002] This utility model relates to the field of powdered solid waste treatment technology, and specifically to a powdered solid waste treatment system. Background Technology

[0003] Municipal solid waste incineration plants, cement plants, steel plants, and other facilities generate powdery solid waste such as fly ash during their production processes. This powdery solid waste contains a large amount of pollutants, which will cause serious harm to the environment and living organisms if not treated in time.

[0004] In related technologies, the treatment process for powdered solid waste includes elution, which involves using an eluent to wash the powdered solid waste to remove soluble substances, thereby achieving the purpose of secondary utilization or safe disposal. However, because multiple elution processes are required, the number of elution devices in the treatment of powdered solid waste is relatively large, the overall structure is relatively complex, and it occupies a lot of space, which greatly limits the implementation and application of the elution process.

[0005] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects remains a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a treatment system for powdered solid waste. This system contains a relatively small number of devices, which reduces the space required for installation and facilitates its widespread application.

[0007] To solve the above-mentioned technical problems, this utility model provides a treatment system for powdery solid waste, including an equipment unit. The equipment unit includes a washing module, which includes a pulping device, a liquid washing device, a first filtration device, and a slag conveying device. The outlet of the pulping device is connected to the inlet of the first filtration device. The first filtration device has a slag discharge section. The slag conveying device is located downstream of the slag discharge section and is used to receive the slag discharged from the first filtration device through the slag discharge section. The slag conveying device is also used to at least convey the slag to the liquid washing device. The outlet of the liquid washing device is connected to the inlet of the first filtration device. The number of the pulping device, the liquid washing device, and the first filtration device is one. The pulping device is used to perform the first liquid washing sub-step in the liquid washing process of the powdery solid waste. The liquid washing device is used to perform the remaining liquid washing sub-steps in the liquid washing process of the powdery solid waste. The first filtration device is used to perform each of the first filtration sub-steps in the liquid washing process of the powdery solid waste.

[0008] The powdered solid waste treatment system provided in this embodiment of the invention can achieve multiple liquid washing and multiple filtration of powdered solid waste by setting only one pulping device, one liquid washing device and one first filtration device. This can significantly reduce the number of devices included in the elution module of the treatment system, simplify the structural complexity of the elution module of the treatment system, thereby reducing the space required for installation of the treatment system, and thus reducing the setting cost and difficulty of the treatment system, which is more conducive to the promotion, implementation and application of the elution process.

[0009] Optionally, the equipment unit further includes a liquid storage device, which includes N liquid storage tanks, where N≥3; the first filtration device has a filtrate discharge section, and each of the liquid storage tanks is connected to the filtrate discharge section. Each of the liquid storage tanks is used to receive the liquid washing filtrate obtained from the first filtration sub-process N times; among the liquid storage tanks, except for the liquid storage tank used to receive the liquid washing filtrate obtained from the first filtration sub-process, at least a portion of the other liquid storage tanks is connected to the inlet of the liquid washing device so that liquid washing filtrate can be introduced into the liquid washing device.

[0010] Optionally, the device unit further includes a filtrate storage device, wherein the filtrate discharge section is connected to the inlet of the filtrate storage device, and the outlet of the filtrate storage device is connected to each of the storage tanks; and / or, among the storage tanks, at least the storage tank connected to the inlet of the washing device is located on the upper side of the washing device.

[0011] Optionally, the equipment unit further includes a containing device for containing powdered solid waste, the containing device being connected to the inlet of the pulping device and for introducing the powdered solid waste into the pulping device.

[0012] Optionally, the containing device includes a material silo and a reagent silo, the material silo being used to contain powdered solid waste and the reagent silo being used to contain waste treatment reagents; and / or, the containing device is located above the pulping device; and / or, the containing device and the pulping device are modularly integrated.

[0013] Optionally, the inlet of the liquid washing device is equipped with a dispersant.

[0014] Optionally, the device unit further includes a liquid purification module, the inlet of which can be connected to the filtrate discharge section of the first filtration device; the liquid washing filtrate obtained from the first filtration sub-process can be passed into the liquid purification module for purification treatment.

[0015] Optionally, the liquid purification module includes a purification device, and the liquid washing filtrate obtained from the first filtration sub-process can be passed into the purification device for purification treatment to obtain a purified feed liquid.

[0016] Optionally, the impurity removal device includes at least one of a hardness removal reactor and a heavy metal removal reactor, and the first filtration device; or, the impurity removal device includes a hardness removal reactor, the first filtration device, a heavy metal removal reactor, and a heavy metal filter, wherein the hardness removal reactor, the first filtration device, the heavy metal removal reactor, and the heavy metal filter are connected in sequence.

[0017] Optionally, the liquid purification module further includes a neutralization reactor, into which the impurity-removing liquid can be passed for neutralization treatment.

[0018] Optionally, the liquid purification module further includes a second filtration device, the second filtration device having a higher filtration accuracy than the first filtration device, the impurity-removing liquid being passed into the second filtration device for filtration to obtain a first liquid and a second liquid, the concentration of the first liquid being lower than that of the second liquid.

[0019] Optionally, the outlet of the second filter device can also be connected to the liquid washing device, and the second liquid can be introduced into the liquid washing device; or, the outlet of the second filter device can also be connected to the impurity removal device, and the second liquid can be introduced into the impurity removal device.

[0020] Optionally, it also includes a carrier unit, on which at least a portion of the devices of the elution module and the liquid purification module are mounted.

[0021] Optionally, the supporting unit is a box structure or a frame structure; and / or, the supporting unit is a double-layer structure or a triple-layer structure; and / or, the pulping device is located outside the supporting unit. Attached Figure Description

[0022] Figure 1 A simplified structural diagram of a powdered solid waste treatment system provided in an embodiment of this utility model;

[0023] Figure 2 A connection structure diagram of a housing device and a pulping device;

[0024] Figure 3 Another connection structure diagram of the housing and pulping equipment;

[0025] Figure 4 Another connection structure diagram for the housing and pulping equipment;

[0026] Figure 5 Another connection structure diagram for the housing and pulping equipment;

[0027] Figure 6 for Figure 1 A simplified diagram showing the distribution of various devices within the lower and middle load-bearing sections;

[0028] Figure 7 for Figure 1 A simplified diagram showing the distribution of various devices within the upper and middle load-bearing sections;

[0029] Figure 8 This is a schematic diagram of another structure of the bearing unit in an embodiment of this utility model;

[0030] Figure 9 A simplified diagram illustrating the process of treating powdered solid waste according to an embodiment of this utility model;

[0031] Figure 10 This is a flowchart illustrating the elution step in the method for treating powdered solid waste provided in this embodiment of the utility model.

[0032] Figure 11 This is a schematic flowchart illustrating the liquid purification step in the method for treating powdered solid waste provided in this embodiment of the present invention.

[0033] Figure label:

[0034] 1000 - Equipment Unit; 1100 - Washing Module; 1110 - Liquid Washing Device; 1111 - Disperser; 1120 - First Filtration Device; 1130 - Slag Conveying Device; 1140 - Liquid Storage Device; 1141 - Liquid Storage Tank; 1150 - Filtrate Temporary Storage Device; 1160 - Container Device; 1161 - Material Bin; 1162 - Reagent Bin; 1170 - Pulping Device; 1171 - Pulping Tank; 1 180 - Clean water tank; 1200 - Liquid purification module; 1210 - Impurity removal device; 1211 - Heavy metal removal reactor; 1212 - Hardness removal reactor; 1220 - Second filtration device; 1230 - Acid tank; 1240 - Heavy metal removal reagent tank; 1250 - Liquid collection tank; 1260 - Neutralization reactor; 1300 - Power distribution room; 1400 - Waste gas collection module; 1500 - Circulating water tank;

[0035] 2000 - Bearing unit; 2100 - Lower bearing section; 2200 - Upper bearing section; 2300 - Bottom bearing section;

[0036] 3000 - Dust Collection Equipment. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] In the description of the embodiments of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature.

[0039] In the description of embodiments of this utility model, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0040] In the description of this utility model embodiment, "and / or" is merely a way of describing 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. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0041] Example 1

[0042] Please refer to Figures 1-9 , Figure 1 A simplified structural diagram of a powdered solid waste treatment system provided in an embodiment of this utility model; Figure 2 A connection structure diagram of a housing device and a pulping device; Figure 3 Another connection structure diagram of the housing and pulping equipment; Figure 4 Another connection structure diagram for the housing and pulping equipment; Figure 5 Another connection structure diagram for the housing and pulping equipment; Figure 6 for Figure 1 A simplified diagram showing the distribution of various devices within the lower and middle load-bearing sections; Figure 7 for Figure 1 A simplified diagram showing the distribution of various devices within the upper and middle load-bearing sections; Figure 8 This is a schematic diagram of another structure of the bearing unit in an embodiment of this utility model; Figure 9 A simplified diagram illustrating the process of treating powdered solid waste according to an embodiment of this utility model.

[0043] This utility model provides a system for treating powdered solid waste. Specifically, it can be used to treat powdered solid waste such as fly ash generated during the production process of municipal solid waste incineration plants, cement plants, steel plants, etc. The specific treatment method can include a washing process, in which the powdered solid waste is mixed with the washing liquid and then filtered to remove soluble substances from the powdered solid waste, thereby achieving the purpose of waste utilization or safe disposal.

[0044] Here, the embodiments of this utility model do not limit the specific type of the eluent. In practical applications, those skilled in the art can select the eluent based on the specific composition of the powdered solid waste and other actual conditions, as long as it meets the requirements for use. For example, the eluent can be water or a liquid containing specific components.

[0045] Combination Figure 9 The processing system provided in this embodiment of the invention for treating powdery solid waste includes a elution process. The elution process includes three liquid washing sub-processes and three first filtration sub-processes. These three liquid washing sub-processes and three first filtration sub-processes can be performed alternately. One liquid washing sub-process plus one first filtration sub-process can be considered one elution operation. Figure 9 The elution process shown may include 3 elution operations.

[0046] Detailed instructions, such as those for specific implementation. Figure 9As shown, a first liquid washing sub-process can be performed, specifically mixing powdered solid waste, reagents, and eluent to obtain a first liquid-washed recycled material. A first first filtration sub-process can then be performed on this first liquid-washed recycled material to obtain a first liquid-washed filtrate and a first liquid-washed filter residue; thus completing the first washing operation. Next, a second liquid washing sub-process can be performed, specifically mixing the first liquid-washed filter residue and eluent to obtain a second liquid-washed recycled material. A second first filtration sub-process can then be performed on this second liquid-washed recycled material to obtain a second liquid-washed filtrate and a second liquid-washed filter residue; thus completing the second washing operation. Then, a third liquid washing sub-process can be performed, specifically mixing the second liquid-washed filter residue and eluent to obtain a third liquid-washed recycled material. A third first filtration sub-process can then be performed on this third liquid-washed recycled material to obtain a third liquid-washed filtrate and a third liquid-washed filter residue; thus completing the third washing operation. By repeating this process three times, soluble substances in powdered solid waste can be effectively removed to a large extent, laying the foundation for the resource utilization and safe disposal of powdered solid waste.

[0047] In the aforementioned elution process, the eluent in the first liquid washing sub-step can be the second liquid washing filtrate, and the eluent in the second liquid washing sub-step can be the third liquid washing filtrate. This allows for the reuse of the liquid washing filtrate, reducing water waste and wastewater discharge, thus alleviating the burden on liquid purification treatment and achieving energy conservation and emission reduction. Furthermore, it allows for the reuse of residual chemicals in the second and third liquid washing filtrates, reducing chemical waste.

[0048] It is understood that when the processing system provided in this embodiment of the present invention is initially started, since there is no second or third liquid washing filtrate available for use, the eluent in the first and second liquid washing sub-steps can be newly provided water or a liquid containing specific components. Similarly, for the third liquid washing sub-step, which is the last liquid washing sub-step in the elution process, the eluent used can also be newly provided water or a liquid containing specific components.

[0049] It should be understood that the number of elution operations included in the elution process is not limited to the three times mentioned above. It can also be two, four or more times, depending on the type of powdery solid waste to be eluted, etc., and is not limited here.

[0050] As a general description, the elution process involved in the processing system provided in the embodiments of the present utility model may include N elution operations performed sequentially, where N≥3. Without considering the situation of the processing system provided in the embodiments of the present utility model at the initial startup, then, the execution process of the elution process in the embodiments of the present utility model can be briefly described as follows: 1) The first elution operation includes the first liquid washing sub-operation and the first first filtration sub-operation. The eluent used in the first liquid washing sub-operation can be the second liquid washing filtrate obtained in the second first filtration sub-operation of the second elution operation; 2) The i-th elution operation, 1 < i < N, includes the i-th liquid washing sub-operation and the i-th first filtration sub-operation. The eluent used in the i-th liquid washing sub-operation is the (i + 1)-th liquid washing filtrate obtained in the (i + 1)-th first filtration sub-operation of the (i + 1)-th elution operation; 3) The N-th elution operation includes the N-th liquid washing sub-operation and the N-th first filtration sub-operation. The eluent used in the N-th liquid washing sub-operation is newly provided water or a liquid containing specific components.

[0051] It should be understood that the above implementation method of repeatedly using the liquid washing filtrate as the eluent during the execution process of the elution process is only an exemplary description of the processing system provided in the embodiments of the present utility model during the execution of the elution process, and cannot be used as a limitation on the implementation scope of the processing system provided in the embodiments of the present utility model. In specific implementation, those skilled in the art can also flexibly adjust the types of eluents used in each liquid washing sub-operation as long as they can meet the usage requirements. For example, newly provided water or a liquid containing specific components can be used as the eluent for each elution sub-operation.

[0052] In addition, the embodiments of the present utility model do not limit the components of the above-mentioned medicaments. In specific practice, those skilled in the art can also select according to the actual situation such as the specific components of the powdery solid waste as long as they can meet the usage requirements.

[0053] In some implementation manners, the above-mentioned medicaments may include at least one of a hardness remover, a heavy metal remover, and a dispersant.

[0054] The hardness remover can be selected from sodium sulfate, potassium sulfate, etc. The heavy metal remover can be selected from sulfides, chelating agents, oxidation decolorization medicaments, etc.; among them, sulfides and chelating agents can chemically react with heavy metal ions to form insoluble substances, which can efficiently fix heavy metal ions in the feed liquid, while the oxidation decolorization medicament can decolorize colored ions, which is beneficial to ensuring the quality of the crystal salts generated by downstream equipment. The dispersant can be filler particles, hydrophobic surfactants, etc. The dispersant has a dispersing effect and can promote the precipitation and dissolution of soluble substances in the powdery solid waste, and can improve the elution efficiency.

[0055] Such as Figures 1-6 As shown, the processing system includes equipment unit 1000, which is the main body of the processing system. Equipment unit 1000 includes a washing module 1100, which is mainly used to perform the aforementioned washing process. The washing module 1100 includes a pulping device 1170, a liquid washing device 1110, a first filtration device 1120, and a residue conveying device 1130.

[0056] Both the pulping device 1170 and the liquid washing device 1110 are liquid washing reactors, primarily used to perform the aforementioned liquid washing sub-processes. The specific structural form of the liquid washing reactor is not limited here, as long as it can achieve the liquid washing function; for example, the liquid washing reactor can be equipped with a stirrer to accelerate the liquid washing process and improve liquid washing efficiency. The pulping device 1170 performs the first liquid washing sub-process in the liquid washing process. The outlet of the pulping device 1170 is connected to the inlet of the first filter device 1120 so that the first liquid-washed recycled material completed in the pulping device 1170 is introduced into the first filter device 1120 for filtration. The liquid washing device 1110 performs the remaining liquid washing sub-processes in the liquid washing process. The outlet of the liquid washing device 1110 is also connected to the inlet of the first filter device 1120 so that the liquid-washed recycled material completed in the liquid washing device 1110 is transported to the first filter device 1120.

[0057] The first filtration device 1120 can perform filtration functions, and can specifically be a filter press, centrifugal separator, screw press, or other device with solid-liquid separation function. The first filtration device 1120 has a slag discharge section (not shown in the figure).

[0058] The slag conveying device 1130 is used to convey slag, and can specifically be a belt conveyor, screw conveyor, tubular chain conveyor, etc. Located downstream of the slag discharge section, the slag conveying device 1130 receives the slag discharged from the first filtration device 1120 through the slag discharge section. This slag includes the aforementioned liquid-washed filter residue. The slag conveying device 1130 is also used to convey the slag to the liquid washing device 1110 at least.

[0059] In this embodiment of the invention, the number of pulping device 1170, liquid washing device 1110 and first filtration device 1120 is one each, which means that multiple liquid washing and filtration of powdery solid waste can be achieved. This can significantly reduce the number of devices included in the elution module 1100 of the treatment system, simplify the structural complexity of the elution module 1100 of the treatment system, thereby reducing the space required for installation of the treatment system, and thus reducing the setup cost and difficulty of the treatment system, which is more conducive to the promotion, implementation and application of the elution process.

[0060] In particular, the liquid washing device 1110 can perform at least two liquid washes, allowing the liquid washing device 1110 to be fully utilized.

[0061] In some implementations, the equipment unit 1000 may further include a containing device 1160, which is at least used to contain solid waste. The containing device 1160 is connected to the inlet of the pulping device 1170, and the outlet of the pulping device 1170 is at least used to be connected to the inlet of the first filtration device 1120.

[0062] In the elution process, the first liquid washing step is specifically performed in the pulping unit 1170. (This is in conjunction with the aforementioned...) Figure 9 Taking a washing operation of three times as an example, the first liquid washing sub-process is performed in the pulping unit 1170, while the remaining second and third liquid washing sub-processes are performed in the liquid washing unit 1110. This arrangement can reduce the number of devices included in the processing system to some extent, thereby simplifying the structure of the processing system and reducing the space requirements for installation.

[0063] Combination Figures 2-5 The containing device 1160 includes a material bin 1161 and a reagent bin 1162. The material bin 1161 is used to contain solid waste. The reagent bin 1162 is used to contain reagents. Depending on the type of reagent used, the number of reagent bins 1162 can be selectively set to one or more, which is not limited here.

[0064] like Figure 2 and Figure 3 As shown, the solid waste in material silo 1161 and the reagents in reagent silo 1162 can be pulped separately. In this case, the pulping device 1170 can include multiple pulping tanks 1171, each of which can be connected to both the material silo 1161 and the reagent silo 1162. The outlet of the pulping tank 1171 connected to the material silo 1161 can be connected to the inlet of the first filtration device 1120, so that the first liquid-washed recycled material obtained in the pulping tank 1171 can be fed into the first filtration device 1120. The outlet of the pulping tank 1171 connected to the reagent silo 1162 can be connected to the impurity removal device 1210 (see the relevant description below), so that the required reagents can be fed into the impurity removal device 1210.

[0065] Or, such as Figure 4 and Figure 5As shown, the solid waste in the material silo 1161 and the reagents in the reagent silo 1162 can also be pulped together. In this case, the pulping device 1170 may consist of only one pulping tank 1171, and both the material silo 1161 and the reagent silo 1162 can be connected to the pulping tank 1171 to feed the solid waste and reagents into the pulping tank 1171 for unified pulping. The outlet of the pulping tank 1171 can be connected to the inlet of the first filter device 1120.

[0066] The receiving device 1160 and the pulping device 1170 can be modularly integrated, which can reduce the material transfer distance between them, so as to improve the structural compactness and integration of the processing system provided by the present invention to a greater extent, and can facilitate the unified installation and disassembly of the receiving device 1160 and the pulping device 1170.

[0067] During installation, the receiving device 1160 can be located above the pulping device 1170. In this way, solid waste, reagents, etc. in the receiving device 1160 can flow into the pulping device 1170 by gravity, thus eliminating the need for a pumping device, or even if a pumping device is installed, only a relatively low-power pumping device is needed to meet the material conveying requirements, saving investment and reducing operating costs.

[0068] It should be understood that the container 1160 is located above the pulping device 1170, but it is not necessarily required that the container 1160 be directly above the pulping device 1170; it can also be slightly offset. In short, as long as the outlet of the container 1160 is positioned higher than the inlet of the pulping device 1170 in the vertical direction, so that the material in the container 1160 can at least partially flow into the pulping device 1170 by gravity, it is acceptable.

[0069] Furthermore, the aforementioned material silo 1161 can be directly connected to the dust collection equipment of the upstream production system to directly receive the powdery solid waste collected by the dust collection equipment, thereby eliminating the need for the transfer process of powdery solid waste and thus saving power consumption during the transfer process. In another embodiment, the processing system provided by this utility model can also be set up independently, without being directly connected to the upstream production system. In this case, some conveying or transport equipment can be used to transport the powdery solid waste generated by the upstream production system to the material silo 1161 for collection, which is also feasible.

[0070] In some implementations, a dispersant 1111 can be installed at the inlet of the liquid washing device 1110. This dispersant 1111 is used to disperse the slag discharged from the slag conveying device 1130. In this way, the particle size of the slag entering the liquid washing device 1110 can be relatively small, which is more conducive to thorough liquid washing of the slag in the liquid washing device 1110, so that the soluble substances in the slag can be better precipitated and dissolved.

[0071] The specific types of break-down machines 1111 are not specified here.

[0072] In some implementations, device unit 1000 may also include liquid storage device 1140.

[0073] The liquid storage device 1140 may include N liquid storage tanks 1141. The first filtration device 1120 may have a filtrate discharge section (not shown in the figure), and each liquid storage tank 1141 can be connected to the filtrate discharge section. In actual use, each liquid storage tank 1141 can receive the washing filtrate obtained from N first filtration sub-processes in a corresponding manner.

[0074] Furthermore, among the storage tanks 1141, except for the storage tank 1141 used to receive the first liquid washing filtrate obtained from the first first filtration sub-process, the other storage tanks 1141 can be connected to the inlet of the liquid washing device 1110 so that liquid washing filtrate can be introduced into the liquid washing device 1110 for recycling.

[0075] by Figure 5 Taking the elution process shown, which includes three elution operations, as an example, combined with... Figure 3 At this time, the number of storage tanks 1141 can also be three, namely a first storage tank, a second storage tank, and a third storage tank. The first storage tank can be used to receive the first liquid washing filtrate, the second storage tank can be used to receive the second liquid washing filtrate, and the third storage tank can be used to receive the third liquid washing filtrate. Both the second and third storage tanks can be connected to the liquid washing device 1110 so that the second and third liquid washing filtrates can be introduced into the liquid washing device 1110 for use when needed.

[0076] Of the various storage tanks 1141, at least one storage tank 1141 connected to the inlet of the washing device 1110 can be located above the washing device 1110. In this way, the washing filtrate in the storage tank 1141 can flow into the washing device 1110 by gravity, eliminating the need for a pumping device. Alternatively, even if a pumping device is installed, only a relatively low-power pump is required to meet the material conveying requirements, saving investment and reducing operating costs.

[0077] It should be understood that the storage tank 1141 is located above the liquid washing device 1110, but it is not necessarily required that the storage tank 1141 be directly above the liquid washing device 1110; it can also be slightly offset. In short, as long as the outlet of the storage tank 1141 is positioned higher than the inlet of the liquid washing device 1110 in the vertical direction, so that the liquid washing filtrate in the storage tank 1141 can at least partially flow into the liquid washing device 1110 by gravity, it is acceptable.

[0078] In some implementations, the device unit 1000 may further include a filtrate storage device 1150. The filtrate discharge section of the first filtration device 1120 may be directly connected to the inlet of the filtrate storage device 1150 to discharge washing filtrate into the filtrate storage device 1150. The outlet of the filtrate storage device 1150 may be connected to each of the storage tanks 1141 to distribute washing filtrate into each of the storage tanks 1141 respectively.

[0079] With this configuration, the first filtration device 1120 is not directly connected to each of the storage tanks 1141, but is indirectly connected to each of the storage tanks 1141 through a filtrate storage device 1150, and the filtrate is distributed to each of the storage tanks 1141 through the filtrate storage device 1150. In this way, the structure of the filtrate discharge section of the first filtration device 1120 can be relatively simple.

[0080] It should be understood that in some other implementations of this utility model, the above-mentioned filtrate temporary storage device 1150 may not be provided. In this case, the filtrate discharge section and each storage tank 1141 can be directly connected. The number of devices in the equipment unit 1000 of the processing system provided by this utility model embodiment can be relatively small, and the structure of the equipment unit 1000 can be relatively simple.

[0081] In some implementations, the device unit 1000 may further include a liquid purification module 1200. The inlet of the liquid purification module 1200 can be connected to the filtrate discharge section of the first filtration device 1120. The specific connection method can be direct connection or indirect connection. In the implementation using indirect connection, the inlet of the liquid purification module 1200 can specifically be connected to the aforementioned filtrate temporary storage device 1150.

[0082] Combination Figure 9 In the elution process, the first liquid filtrate obtained from the first filtration sub-process can be passed into the liquid purification module 1200.

[0083] In this embodiment of the invention, the treatment of powdered solid waste may further include a liquid purification step. At least a portion of the liquid purification step may be performed in the liquid purification module 1200 to purify the first washing filtrate. Thus, the processing system provided in this embodiment of the invention can also perform a liquid purification step, enabling the processing system provided in this embodiment of the invention to integrate elution and liquid purification functions.

[0084] Here, the specific structural form of the liquid purification module 1200 is not limited in this embodiment. In practical applications, those skilled in the art can set the liquid purification module 1200 according to the specific composition of the first washing filtrate and related purification requirements. In short, as long as the requirements for use are met, it is acceptable.

[0085] In some implementations, the liquid purification module 1200 may include a purification device 1210, in which the first liquid washing filtrate obtained from the first filtration sub-process can be passed into the purification device 1210 for purification treatment to obtain a purified liquid.

[0086] Thus, the liquid purification process may include a sub-process for removing impurities, which can be performed in the impurity removal device 1210 to effectively remove impurities from the first liquid washing filtrate, thereby achieving the purpose of water purification.

[0087] The aforementioned impurity removal device 1210 may include at least one of a heavy metal removal reactor 1211 and a hardness removal reactor 1212. The heavy metal removal reactor 1211 is used to reduce and remove heavy metal components from the impurity removal solution, while the hardness removal reactor 1212 is used to reduce and remove calcium ions, magnesium ions, etc., from the impurity removal solution.

[0088] In a specific example, the impurity removal device 1210 may further include the aforementioned first filter device 1120. After performing at least one of the heavy metal removal reaction and hardness removal reaction, the impurity removal device 1210 may also perform filtration within the first filter device 1120 to obtain the aforementioned impurity-removed liquid and impurity-removed filter residue. In this way, the liquid purification module 1200 does not need to be equipped with a separate filter device, but can directly utilize the first filter device 1120 in the elution module 1100 for solid-liquid separation, which can further reduce the number of devices in the processing system provided by the present invention, thereby simplifying the structural complexity of the processing system and reducing the space requirements for installation.

[0089] In this embodiment of the present invention, the slag material also includes the aforementioned impurity removal filter residue, which can also be received by the slag material conveying device 1130 and conveyed by the slag material conveying device 1130 to the liquid washing device 1110 for rewashing, so as to more fully precipitate and dissolve the soluble substances in the powdered solid waste.

[0090] In this example, the impurity removal process may include an impurity removal reaction stage and a filtration stage. The impurity removal reaction stage may be performed in a heavy metal removal reactor 1211, a hardness removal reactor 1212, etc., to remove heavy metals and calcium and magnesium ions, etc., and the filtration stage may be performed in the first filtration device 1120.

[0091] In another specific example, the impurity removal device 1210 may further include the aforementioned first filtration device 1120 and a heavy metal filter (not shown in the figure). The hardness removal reactor 1212, the first filtration device 1120, the heavy metal removal reactor 1211, and the heavy metal filter can be connected in sequence, and correspondingly, the impurity removal sub-process can be performed sequentially in the hardness removal reactor 1212, the first filtration device 1120, the heavy metal removal reactor 1211, and the heavy metal filter. The specific types of heavy metal filters can be referred to the aforementioned description of the first filtration device 1120, and will not be repeated here.

[0092] At this point, the filter residue can include hardness removal filter residue and heavy metal removal filter residue. The hardness removal filter residue can be obtained by filtration in the first filtration device 1120, while the heavy metal removal filter residue can be obtained by filtration in a heavy metal filter. The hardness removal filter residue can be sent to the liquid washing device 1110 for rewashing, while the heavy metal removal filter residue can be treated separately to minimize heavy metal contamination.

[0093] In this example, the impurity removal process may include a hardness removal stage, a primary filtration stage, a heavy metal removal stage, and a secondary filtration stage. The hardness removal stage and the heavy metal removal stage can be performed in the hardness removal reactor 1212 and the heavy metal removal reactor 1211, respectively. The primary filtration stage can be performed in the first filtration device 1120, and the secondary filtration stage can be performed in the heavy metal filter.

[0094] It should be understood that in some other implementations of this utility model, the liquid purification module 1200 may not use the first filter device 1120 in the elution module 1100 for filtration, but may use an independent filter, which is also feasible.

[0095] The impurity-removing liquid obtained after the impurity removal process can be directly discharged as wastewater.

[0096] Alternatively, the pH of the purified water solution can be adjusted first to regulate its acidity or alkalinity before being discharged as wastewater. In this case, the liquid purification process can also include a pH adjustment sub-process, which can be performed in a separately configured reactor.

[0097] The liquid purification module 1200 may further include a second filtration device 1220, which has a higher filtration accuracy than the first filtration device 1120. Specifically, the second filtration device 1220 can be a membrane filter, bag filter, ceramic filter, fiber filter, etc. The second filtration device 1220 can remove suspended solids (SS), colloidal particles, macromolecules, etc., thereby significantly improving the liquid purification effect and enhancing the cleanliness of the discharged water.

[0098] In this implementation, the inlet of the second filtration device 1220 and the outlet of the impurity removal device 1210 can be connected to each other, so that the impurity removal liquid can be transported to the second filtration device 1220. The connection between the second filtration device 1220 and the impurity removal device 1210 can also include direct connection and indirect connection. In the implementation using indirect connection, the inlet of the second filtration device 1220 can specifically be connected to the aforementioned filtrate storage device 1150. The impurity removal liquid can be first introduced into the filtrate storage device 1150, and then transferred from the filtrate storage device 1150 into the second filtration device 1220.

[0099] Regarding the implementation of the pH adjustment sub-process, the pH adjustment sub-process can be performed within the aforementioned filtrate storage device 1150, or it can be performed within the second filtration device 1220. This eliminates the need for a separate reactor for the pH adjustment sub-process, further reducing the number of devices included in the processing system provided by this embodiment, thereby reducing the system's structure and lowering the space requirements for installation. Of course, in some other implementations of this embodiment, such as... Figure 3 As shown, the liquid purification module 1200 may also include a neutralization reactor 1260, in which the pH adjustment sub-process may be performed. The neutralization reactor 1260 may be connected to the second filtration device 1220.

[0100] In practical implementation, the impurity removal solution can be filtered in the second filtration device 1220 to obtain a first liquid and a second liquid, with the concentration of the first liquid being lower than that of the second liquid. When the second filtration device 1220 is a membrane filter, the first liquid can be referred to as permeate, and the second liquid can be referred to as concentrate. The outlet of the second filtration device 1220 can also be connected to the inlet of the liquid washing device 1110 to allow the second liquid to be introduced into the liquid washing device 1110. This allows for the reuse of unreacted reagents in the first liquid, reducing reagent waste. The first liquid can then be discharged as effluent.

[0101] Thus, the liquid purification process in this embodiment of the present invention may further include a second filtration sub-process, which may be performed in the second filtration device 1220.

[0102] It should be understood that the second liquid does not necessarily have to be introduced into the liquid washing device 1110. In some other implementations of this utility model, the second liquid can also be introduced into the impurity removal device 1210 for further impurity removal, which is also feasible.

[0103] In some implementations, such as Figures 1-3 As shown, the processing system provided in this embodiment of the present invention may further include a support unit 2000, at least some of the devices in the washing module 1100 and the liquid purification module 1200 may be installed on the support unit 2000 so that they can be integrated and assembled in an integrated manner through the support unit 2000. This can improve the structural compactness and integration of the processing system provided in this embodiment of the present invention, and help to reduce the material transfer distance between the devices, reduce the power demand in the material transfer process, and thus reduce investment costs.

[0104] The aforementioned support unit 2000 can be a box structure, such as a container structure. Alternatively, the aforementioned support unit 2000 can also be a frame structure, which can be formed by splicing together plates, profiles, pipes, etc. In fact, the present invention does not limit the specific structural form of the aforementioned support unit 2000. In practical applications, those skilled in the art can set it according to actual needs, as long as it can meet the integrated assembly of the washing module 1100 and the liquid purification module 1200.

[0105] In the implementation of the attached diagram, as follows: Figure 1 As shown, the support unit 2000 can adopt a double-layer structure, including a lower support section 2100 and an upper support section 2200, wherein the upper support section 2200 is located above the lower support section 2100. The devices in the elution module 1100 and the liquid purification module 1200 can be respectively installed in the upper support section 2200 and the lower support section 2100.

[0106] Combination Figure 6 and Figure 7 In one embodiment, the lower support unit 2100 can be used to install a liquid washing device 1110, a slag conveying device 1130, a filtrate temporary storage device 1150, a second filtration device 1220, an acid tank 1230, a heavy metal removal reagent tank 1240, a power distribution room 1300, and a circulating water tank 1500; wherein, the circulating water tank 1500 is used to store circulating cooling water for cooling the mechanical seals of the equipment. The upper support unit 2200 can be used to install a first filtration device 1120, a liquid storage device 1140, a heavy metal removal reactor 1211, a hardness removal reactor 1212, a neutralization reactor 1260, and a waste gas collection module 1400. This arrangement allows the liquid storage device 1140 and the receiving device 1160 to be naturally located above the liquid washing device 1110, and the first filter device 1120 to be naturally located above the slag conveying device 1130. This allows for a relatively reasonable allocation of the placement of each device, thereby reducing the material transfer distance and further improving the structural compactness and integration of the processing system provided by this embodiment.

[0107] In the above scheme, the acid tank 1230 is used to store acidic substances such as hydrochloric acid for pH adjustment of the impurity removal liquid, and the pH adjustment sub-process can specifically occur in the neutralization reactor 1260; the collection tank 1250 is used to store the effluent from the liquid purification process, which can be the first liquid; the clean water tank 1180 is used to store clean water for use as an eluent during the initial start-up of the treatment system; the waste gas collection module 1400 is used to collect and treat the waste gas generated by the treatment system provided in this embodiment during the treatment of powdered solid waste, and the waste gas collection module 1400 is set in the upper support part 2200, which can also facilitate the collection of waste gas.

[0108] It should be understood that the load-bearing unit 2000 is not limited to the aforementioned double-layer structure; it can also employ other numbers of layers, such as single-layer or triple-layer structures, as long as the requirements for use are met. For example... Figure 8 As shown, the bearing unit 2000 can also be a three-layer structure, which includes a bottom bearing part 2300. The bottom bearing part 2300 can be located on the lower side of the bottom bearing part 2100. In specific construction, the bottom bearing part 2300 can be located at least partially underground, and the bottom bearing part 2300 can be made of concrete.

[0109] Furthermore, the placement of the aforementioned devices on the support unit 2000 is not limited to... Figure 6 and Figure 7As shown, in specific implementations, those skilled in the art can flexibly adjust the placement of each device within the support unit 2000 according to actual needs. Furthermore, the installation and fixing methods for each device within the support unit 2000 can be varied, including welding, screw connection, snap-fitting, riveting, etc., which can be adjusted according to actual requirements.

[0110] In some implementations, both the receiving device 1160 and the pulping device 1170 can be located outside the supporting unit 2000; thus, the number of devices required inside the supporting unit 2000 can be relatively small, and the structural size of the supporting unit 2000 can be relatively small. In other implementations, the receiving device 1160 and the pulping device 1170 can also be located inside the supporting unit 2000, which is also feasible.

[0111] Example 2

[0112] Please refer to Figure 10 and Figure 11 , Figure 10 This is a flowchart illustrating the elution step in the method for treating powdered solid waste provided in this embodiment of the utility model. Figure 11 This is a schematic flowchart illustrating the liquid purification step in the method for treating powdered solid waste provided in this embodiment of the present invention.

[0113] This utility model embodiment also provides a method for treating powdery solid waste, applicable to the powdery solid waste treatment system involved in the aforementioned embodiment 1. The treatment method includes a elution step S100, which includes N alternating liquid washing sub-steps and N first filtration sub-steps. In each liquid washing sub-step, the first liquid washing sub-step involves liquid washing in a pulping device 1170 to obtain liquid-washed recycled material; in each subsequent liquid washing sub-step, the remaining liquid washing sub-steps involve liquid washing in a liquid washing device 1110 to obtain liquid-washed recycled material. Each first filtration sub-step involves filtering the liquid-washed recycled material in a first filtration device 1120.

[0114] Taking N=3 as an example, combined with Figure 10 The elution steps in this embodiment of the invention include a first liquid washing sub-step S111, a first first filtration sub-step S112, a second liquid washing sub-step S121, a second first filtration sub-step S122, a third liquid washing sub-step S131, and a third first filtration sub-step S132, performed sequentially. The first liquid washing sub-step S111 is performed in the pulping device 1170, while the second liquid washing sub-step S121 and the third liquid washing sub-step S131 are both performed in the liquid washing device 1110.

[0115] In some implementations, the processing method provided by the present invention may further include a liquid purification step S200 for purifying the first liquid washing filtrate obtained in the first first filtration sub-step S112.

[0116] Combination Figure 11 The liquid purification step S200 includes: a purification sub-step S210, in which the first liquid washing filtrate obtained from the first first filtration sub-step is passed into the purification device 1210 for purification treatment to obtain the purified material liquid and the purified filter residue.

[0117] In a specific example, the impurity removal sub-step S210 may include an impurity removal reaction stage step and a filtration stage step. Specifically, the impurity removal reaction stage step may be performed in at least one of the heavy metal removal reactor 1211 and the hardness removal reactor 1212 to remove heavy metals, calcium and magnesium ions, and other impurities. The filtration stage step may be performed in the first filtration device 1120. Thus, the first filtration device 1120 in the elution module 1100 can be used to perform the above-mentioned filtration stage step, eliminating the need for a separate filtration device. This reduces the number of devices included in the processing system, thereby reducing the space requirements for installation.

[0118] In another specific example, the impurity removal step S210 may include a hardness removal step, a primary filtration step, a heavy metal removal step, and a secondary filtration step performed sequentially. The hardness removal step and the heavy metal removal step may be performed in a hardness removal reactor 1212 and a heavy metal removal reactor 1211, respectively. The primary filtration step may be performed in a first filtration device 1120 to utilize the first filtration device 1120 in the elution module 1100. The secondary filtration step may be performed in a heavy metal filter.

[0119] The impurity-removing liquid obtained after the impurity removal step S210 can be directly discharged as effluent.

[0120] Alternatively, the pH of the impurity removal solution can be adjusted first to regulate its acidity or alkalinity before being discharged as wastewater. In this case, the liquid purification step S200 may also include a pH adjustment sub-step S220: adjusting the pH of the impurity removal solution.

[0121] In some implementations, the liquid purification step S200 may also include a second filtration sub-step S230 and a second liquid utilization step S240.

[0122] In the second filtration sub-step S230, the impurity-removing liquid is passed into the second filtration device 1220 for solid-liquid separation to obtain a first liquid and a second liquid, wherein the concentration of the first liquid is lower than that of the second liquid. The filtration accuracy of the second filtration device 1220 can be higher than that of the first filtration device 1120. The second filtration device 1220 can specifically be a membrane filter, bag filter, ceramic filter, fiber filter, etc. The second filtration device 1220 can remove suspended solids (SS), colloidal particles, macromolecules, etc., and can further improve the liquid purification effect to enhance the cleanliness of the discharged water.

[0123] In step S240, the second liquid is introduced into the washing apparatus 1110. This allows for the reuse of unreacted reagents in the first liquid, reducing reagent waste. It is also possible that in other implementations, the second liquid can be further purified by passing it into the impurity removal apparatus 1210.

[0124] As for the first liquid, it can be directly discharged as wastewater.

[0125] In some implementations, the impurity-removed filter residue obtained in the impurity removal sub-step S210 can also be fed back into the liquid washing device 1110. In this way, the impurity-removed filter residue can be rewashed to more fully precipitate and dissolve soluble substances in the powdery solid waste.

[0126] It should be noted that the heavy metal removal filter residue in the impurity removal filter residue can also be treated separately to reduce heavy metal pollution.

[0127] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A system for treating powdery solid waste, characterized in that, The system includes an equipment unit comprising a washing module, which includes a pulping device, a liquid washing device, a first filtration device, and a slag conveying device. The outlet of the pulping device is connected to the inlet of the first filtration device. The first filtration device has a slag discharge section. The slag conveying device is located downstream of the slag discharge section and is used to receive the slag discharged from the first filtration device through the slag discharge section. The slag conveying device is also used to at least convey the slag to the liquid washing device. The outlet of the liquid washing device is connected to the inlet of the first filtration device. The system comprises one pulping device, one liquid washing device, and one first filtration device. The pulping device is used to perform the first liquid washing sub-step in the liquid washing process of the powdered solid waste. The liquid washing device is used to perform the remaining liquid washing sub-steps in the liquid washing process of the powdered solid waste. The first filtration device is used to perform each of the first filtration sub-steps in the liquid washing process of the powdered solid waste.

2. The powdered solid waste treatment system according to claim 1, characterized in that, The equipment unit also includes a liquid storage device, which comprises N liquid storage tanks, where N≥3; The first filtration device has a filtrate discharge section, and each of the storage tanks is connected to the filtrate discharge section. Each of the storage tanks is used to receive the washing filtrate obtained from the first filtration sub-process N times. Among the storage tanks, except for the storage tank used to receive the washing filtrate obtained from the first filtration sub-process, at least a portion of the other storage tanks is connected to the inlet of the washing device so that washing filtrate can be introduced into the washing device.

3. The powdered solid waste treatment system according to claim 2, characterized in that, The equipment unit further includes a filtrate storage device, wherein the filtrate discharge section is connected to the inlet of the filtrate storage device, and the outlet of the filtrate storage device is connected to each of the storage tanks; and / or Of the aforementioned liquid storage tanks, at least one liquid storage tank connected to the inlet of the liquid washing device is located on the upper side of the liquid washing device.

4. The powdered solid waste treatment system according to claim 1, characterized in that, The equipment unit further includes a containing device for containing powdered solid waste. The containing device is connected to the inlet of the pulping device and is used to introduce the powdered solid waste into the pulping device.

5. The powdered solid waste treatment system according to claim 4, characterized in that, The containing device includes a material silo and a reagent silo, wherein the material silo is used to contain powdery solid waste and the reagent silo is used to contain waste treatment reagents; And / or, The receiving device is located on the upper side of the pulping device; and / or, The containing device and the pulping device are modularly integrated.

6. The powdered solid waste treatment system according to claim 1, characterized in that, The inlet of the liquid washing device is equipped with a dispersing machine.

7. The treatment system for powdered solid waste according to any one of claims 1-6, characterized in that, The equipment unit also includes a liquid purification module, the inlet of which can be connected to the filtrate discharge section of the first filtration device; the liquid washing filtrate obtained from the first filtration sub-process can be passed into the liquid purification module for purification treatment.

8. The powdered solid waste treatment system according to claim 7, characterized in that, The liquid purification module includes a purification device. The liquid washing filtrate obtained from the first filtration sub-process can be passed into the purification device for purification treatment to obtain a purified liquid.

9. The powdered solid waste treatment system according to claim 8, characterized in that, The impurity removal device includes at least one of a hardness removal reactor and a heavy metal removal reactor, and the first filtration device; or, The impurity removal device includes a hardness removal reactor, a first filtration device, a heavy metal removal reactor, and a heavy metal filter, which are connected in sequence.

10. The powdered solid waste treatment system according to claim 8, characterized in that, The liquid purification module also includes a neutralization reactor, into which the impurity-removing liquid can be passed for neutralization treatment.

11. The powdered solid waste treatment system according to claim 8, characterized in that, The liquid purification module further includes a second filtration device, which has a higher filtration accuracy than the first filtration device. The impurity-removing liquid can be passed into the second filtration device for filtration to obtain a first liquid and a second liquid, wherein the concentration of the first liquid is lower than that of the second liquid.

12. The powdered solid waste treatment system according to claim 11, characterized in that, The outlet of the second filter device can also be connected to the liquid washing device, allowing the second liquid to be introduced into the liquid washing device; or, The outlet of the second filtration device can also be connected to the impurity removal device, and the second liquid can be introduced into the impurity removal device.

13. The powdered solid waste treatment system according to claim 7, characterized in that, It also includes a carrier unit, on which at least some of the devices of the elution module and the liquid purification module are mounted.

14. The powdered solid waste treatment system according to claim 13, characterized in that, The load-bearing unit is one of a box structure or a frame structure; and / or, The supporting unit is one of a two-layer structure or a three-layer structure; and / or, The pulping device is located outside the bearing unit.

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