Industrial waste salt incineration disposal pretreatment system and method

Abstract

The invention provides a pretreatment system and method for industrial waste salt incineration disposal, and the pretreatment system comprises a feeder which is used for receiving materials of industrial waste salt; the crushing device is connected with the feeder and is used for receiving the materials conveyed by the feeder and crushing the materials to obtain crushed materials; the material mixing device is connected with the crushing device and is used for mixing the crushed materials to obtain mixed materials; and the material conveying device is connected with the material mixing device and is used for conveying the mixed materials to an incineration disposal device for incineration. According to the industrial waste salt incineration treatment device, waste salt with different organic matter contents can be mixed, materials are homogenized, and therefore the industrial waste salt incineration treatment effect is more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of waste salt incineration, and particularly to a pretreatment system and method for industrial waste salt incineration disposal. Background Art

[0002] Industrial waste salt refers to solid or solution waste containing salt compounds generated during industrial production. Industrial waste salt contains a large amount of harmful substances, and if not properly treated, it will cause serious pollution to the environment and soil. Industrial waste salt incineration disposal decomposes harmful substances in waste salt through a high-temperature environment, especially in the treatment of waste salt containing impurities generated in chemical production, with remarkable effects.

[0003] Currently, the pretreatment before industrial waste salt incineration disposal has poor crushing effect, and due to poor mixing effect of waste salt, the calorific value is unstable, resulting in unstable industrial waste salt incineration disposal effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a pretreatment system and method for industrial waste salt incineration disposal, which can mix waste salts with different organic matter contents to homogenize the materials, thereby making the industrial waste salt incineration disposal effect more stable.

[0005] To solve the above technical problem, the technical solution of the present invention is as follows:

[0006] A pretreatment system for industrial waste salt incineration disposal, comprising:

[0007] A feeder for receiving materials of industrial waste salt;

[0008] A crushing device connected to the feeder for receiving the materials conveyed by the feeder and crushing the materials to obtain crushed materials;

[0009] A material mixing device connected to the crushing device for mixing the crushed materials to obtain mixed materials;

[0010] A material conveying device connected to the material mixing device for conveying the mixed materials to an incineration disposal device for incineration.

[0011] Optionally, the system further comprises:

[0012] A hoist for lifting the materials of pretreated ton bag waste salt to a preset height;

[0013] Or,

[0014] A hoist and a tipping mechanism connected to the hoist for tipping the tray containing the materials so that the materials enter the feeder;

[0015] A stacker connected to the elevator, and after the turnover mechanism feeds the material, the pallet descends along the elevator or is stacked at a high position to the stacker.

[0016] Optionally, the system further includes:

[0017] A controller electrically connected to the material conveying device and the elevator, configured to determine the flow rate of material conveyance according to the weight of the mixed material, and control the conveying speed of the material conveying device and the feeding speed of the elevator according to the flow rate.

[0018] Optionally, the crushing device includes:

[0019] At least one stage of crusher connected to the feeder, configured to crush the material conveyed by the feeder to obtain crushed material.

[0020] Optionally, the system further includes:

[0021] An unpacking machine disposed between the elevator and the feeder, configured to unpack the material conveyed by the elevator and then convey it to the feeder.

[0022] Optionally, the system further includes:

[0023] A turntable connected to the elevator, configured to separate the material conveyed by the elevator to obtain dry material and sticky material;

[0024] The crushing device includes: a first crushing device and a second crushing device connected to the turntable;

[0025] Wherein, the first crushing device is configured to crush the dry material to obtain first crushed material;

[0026] The second crushing device is configured to crush the sticky material to obtain second crushed material.

[0027] Optionally, the first crushing device includes: a first feeder, a first crusher connected to the first feeder, and a second crusher connected to the first crusher; the dry material enters the first crusher through the first feeder for crushing, and then enters the second crusher for further crushing to obtain first crushed material;

[0028] The second crushing device includes: a second feeder, a third crusher connected to the second feeder; the sticky material enters the third crusher through the second feeder for crushing to obtain second crushed material.

[0029] Optionally, the first crushing device further includes:

[0030] The first belt conveyor connected to the second crusher;

[0031] The metal separation mechanism connected to the first belt conveyor;

[0032] Wherein, the first belt conveyor conveys the first crushed material to the metal separation mechanism, and the metal separation mechanism screens the metal objects in the first crushed material to obtain the screened first crushed material.

[0033] Optionally, the material conveying device includes:

[0034] A three-way distributor, the inlet of the three-way distributor is connected to the outlet of the material mixing device;

[0035] The screening equipment connected to the first discharge port of the three-way distributor;

[0036] The second belt conveyor connected to the screening equipment;

[0037] The metering screw mechanism connected to the screening equipment;

[0038] The conveying mechanism connected to the second discharge port of the three-way distributor and the metering screw mechanism;

[0039] Wherein, the three-way distributor outputs the ton bag materials in the mixed materials from the first discharge port to the screening equipment, and the mixed salt after being screened by the screening equipment enters the metering screw mechanism, and the materials passing through the metering screw mechanism are conveyed to the conveying mechanism; the ton bags screened by the screening equipment are conveyed to the second belt conveyor;

[0040] The three-way distributor outputs the ton bag materials in the mixed materials from the second discharge port to the conveying mechanism;

[0041] The conveying mechanism conveys the materials to the incineration disposal device.

[0042] The present invention provides an industrial waste salt incineration pretreatment method, which is applied to the above system, and the method includes:

[0043] Receiving the materials conveyed by the feeder;

[0044] Crushing the materials through a crushing device to obtain crushed materials;

[0045] Mixing the crushed materials through a material mixing device to obtain mixed materials;

[0046] Conveying the mixed materials to the incineration disposal device through a material conveying device for incineration treatment.

[0047] The above solution of the present invention has at least the following beneficial effects:

[0048] In the above solution of the present invention, through the cooperation of the feeder and the crusher, the problem of poor crushing effect in the current pretreatment of industrial waste salt is effectively solved. Due to the extrusion of the pusher of the feeder, the material can be better grasped by the cutter teeth of the crusher, avoiding material slippage. The downward pressure of the pusher of the feeder can break up the agglomerated waste salt blocks, significantly improving the crushing efficiency. The material mixing device can mix waste salts with different organic matter contents, homogenizing the materials. The problem of unstable calorific value caused by poor mixing effect of waste salts is solved, making the incineration treatment effect of industrial waste salt more stable.

[0049] The turntable can accurately separate according to the differences in dryness and viscosity of the materials. Dry materials and viscous materials have significant differences in physical properties, and it is difficult to achieve ideal results with traditional unified treatment methods. For example, viscous materials are prone to caking and clogging equipment, while dry materials are relatively loose. After separation by the turntable, the dry materials enter the first crushing device, and the viscous materials enter the second crushing device. This targeted treatment makes the crushing process more efficient. The first crushing device is provided with two-stage crushers and supporting feeders for dry materials, which can better adapt to the characteristics of dry materials and improve the crushing efficiency and quality; the second crushing device is specifically used for treating viscous materials, and through specially designed crushers and feeders, the problem of clogging of viscous materials during the crushing process is effectively avoided.

[0050] The materials after classified crushing enter the mixing device. Due to the similar material characteristics, the mixing is more uniform. This is crucial for subsequent incineration treatment because uniform material mixing can ensure stable heat release during incineration, improve the removal efficiency of organic matter, make the purification effect of waste salt better, and thus enhance the economy of the entire incineration treatment.

[0051] The three-way distributor can flexibly output the ton bag materials in the mixed materials from different discharge ports according to actual needs. When it is necessary to screen out the ton bags for separate treatment, the materials are output from the first discharge port to the screening equipment. The screening equipment can set appropriate screen hole sizes according to the size of the ton bags after crushing to accurately separate the ton bags and the materials. The screened materials enter the incineration treatment device through the metering screw mechanism and the conveying mechanism, while the ton bags are output through the second belt conveyor; when it is not necessary to screen out the ton bags for incineration, the materials are directly output from the second discharge port to the conveying mechanism and enter the incineration device. This flexible conveying and sorting method meets different production scenarios and process requirements, improving the flexibility and adaptability of production.

[0052] The controller can accurately calculate the additive dosage based on the respective weights of the first crushed material and the second crushed material, combined with the average organic matter content of the materials and the expected additive content. This precise control of additive addition ensures that during the material mixing process, the appropriate amount of additive can be added according to the characteristics of different materials to optimize the properties of the materials and improve the effect of incineration disposal. For example, for materials with a low organic matter content, the calorific value can be increased by adding suitable additives to make the incineration process more complete and stable.

[0053] By precisely controlling the additive dosage, the mixed materials can react better during the incineration process, reducing damage to the incinerator. At the same time, the removal efficiency of organic matter is further improved, enhancing the quality and economy of waste salt treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 FIG. is a schematic structural diagram of Embodiment 1 of the pretreatment system for industrial waste salt incineration disposal of the present invention.

[0055] Figure 2 FIG. is a schematic structural diagram of Embodiment 2 of the pretreatment system for industrial waste salt incineration disposal of the present invention.

[0056] Figure 3 FIG. is a schematic structural diagram of Embodiment 3 of the pretreatment system for industrial waste salt incineration disposal of the present invention.

[0057] Figure 4 FIG. is a flowchart of the pretreatment method for industrial waste salt incineration disposal of the present invention.

[0058] DESCRIPTION OF REFERENCE NUMERALS:

[0059] 1, elevator; 2, tipping mechanism; 3, unpacking machine; 4, feeder; 5, primary crusher; 6, secondary crusher; 7, material mixer; 8, metal separator; 9, metering screw; 10, conveyor; 11, stacker; 12, turntable; 13, first feeder; 14, first crusher; 15, second crusher; 16, first belt conveyor; 17, second feeder; 18, third crusher; 19, three-way distributor; 20, screening equipment; 21, second belt conveyor; 22, metal separation mechanism; 23, metering screw mechanism; 24, conveying mechanism. DETAILED DESCRIPTION OF THE INVENTION

[0060] Hereinafter, the exemplary embodiments of the present invention will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0061] Example 1

[0062] As Figure 1 shown, an embodiment of the present invention provides an industrial waste salt incineration pretreatment system, including:

[0063] A feeding device for lifting the material containing industrial waste salt to a preset height;

[0064] A crushing device connected to the feeding device for crushing the material to obtain crushed material;

[0065] A material mixing device connected to the crushing device for mixing the crushed material to obtain mixed material;

[0066] A material conveying device connected to the material mixing device for conveying the mixed material to an incineration disposal device;

[0067] A controller electrically connected to the material conveying device and the feeding device for determining the flow rate of material conveyance according to the weight of the mixed material, and controlling the conveying speed of the material conveying device and the feeding speed of the feeding device according to the flow rate.

[0068] Specifically, the feeding device may include a hoist 1, a tipping mechanism 2, and a stacker 11; the crushing device may include a feeder 4, a primary crusher 5, and a secondary crusher 6; the material conveying device may include a material mixer 7; the material conveying device may include a metering screw 9 and a conveyor 10.

[0069] In this embodiment, through the automatic feeding of the feeding device, the material then enters the crushing device for crushing, then the crushed material is mixed by the material mixing device, and then the mixed material is conveyed to the incineration disposal device by the material conveying device; during the material conveying process, the flow rate of material conveyance can be determined according to the weight of the mixed material, and the conveying speed of the material conveying device and the feeding speed of the feeding device are controlled according to the flow rate, which can realize automatic feeding and automatically control the conveying speed and feeding speed of the material according to the material flow rate, so as to mix waste salts with different organic matter contents, homogenize the material, and automatically control the feeding, crushing, and conveying of the material, thereby making the industrial waste salt incineration disposal effect more stable and significantly improving the crushing efficiency.

[0070] In an alternative embodiment of the present invention, the feeding device may include:

[0071] A hoist 1 for lifting the material containing industrial waste salt to a preset height;

[0072] A tipping mechanism 2 connected to the elevator 1 tips the tray containing the material, causing the material to enter the crushing device;

[0073] A stacker 11 connected to the elevator 1. After the tipping mechanism 2 feeds the material, the tray descends along the elevator 1 or is stacked at a high position onto the stacker 11.

[0074] In this embodiment, the tipping mechanism 2 is used to automatically tip and drop the material into the crushing device, realizing the automatic feeding of the material into the crushing device; after the tipping mechanism 2 feeds the material, the tray descends along the elevator 1 and is conveyed to the stacker 11; thus, the automatic recycling of the tray is realized, facilitating the next automatic feeding. The elevator 1 can lift the material containing industrial waste salt to a preset height to prepare for subsequent feeding and material processing processes; the tipping mechanism 2 is connected to the elevator 1 and tips the tray containing the material, causing the material to pour out of the tray by gravity, enabling the material to smoothly enter the crushing device and realizing the effective transfer of the material from the lifting link to the crushing link. After the tipping mechanism 2 feeds the material, the stacker 11 receives the tray descending from the elevator 1 and conveys it to a designated position for stacking and storage. This process realizes the automatic recycling of the tray, facilitates the subsequent material feeding cycle, reduces the disposal cost of the tray, and improves the utilization efficiency of the tray.

[0075] In an alternative embodiment of the present invention, the crushing device includes:

[0076] A feeder 4 connected to the feeding device, which is used to receive the material conveyed by the feeding device;

[0077] At least one-stage crusher 5 connected to the feeder 4, which is used to crush the material conveyed by the feeder 4 to obtain crushed material;

[0078] Specifically, the at least one-stage crusher 5 includes: a primary crusher 5 and a secondary crusher 6 connected to the feeder 4; among them, the primary crusher 5 is used to perform primary crushing on the material, and then enters the secondary crusher 6 for secondary crushing of the material to obtain crushed material, reducing the material size to the size required for subsequent processes.

[0079] In this embodiment, a crusher with a feeder is adopted. When the material falls into the crusher, the push head of the feeder inside the crusher presses down on the material, providing an external force to squeeze the whole piece of material towards the cutter teeth of the crusher, avoiding the slipping of the whole agglomerated material on the cutter teeth of the crusher and improving the crushing efficiency; in order to meet the actual crushing requirements, primary crushing, secondary crushing can be adopted, or tertiary and above crushing can also be adopted. The embodiments of the present invention are not limited to secondary crushing.

[0080] In an alternative embodiment of the present invention, the crushed material enters a material mixing device to mix the crushed material to obtain a mixed material, and then enters a metal separator 8 connected to the material mixing device to screen the metal substances in the mixed material to obtain a screened material.

[0081] Specifically, the material mixing device includes:

[0082] A mixer cavity;

[0083] A weighing mechanism placed in the mixer cavity for weighing the crushed material;

[0084] A material inlet and an additive feeding port provided on the mixer cavity;

[0085] A discharge gate outlet provided on the mixer cavity.

[0086] In this embodiment, the crushed material enters the mixer cavity of the material mixing device for mixing and stirring. After the stirred material is completely homogenized, the discharge gate outlet is opened, and the material passes through the metal separator 8 at the discharge end to screen the metal substances out of the system. Further, the mixer cavity receives materials of different components and is provided with an independent additive feeding port. According to the oil and water content ratio of the material components, the materials are proportioned by weighing. The paddle blades are arranged in a forward mixing and reverse mixing manner to push the material forward and stir it. The mixing state of the material is judged by the mixing pressure data, and after reaching a uniform state, discharging is carried out. The discharge gate is controlled by a hydraulic cylinder and can control the opening of the discharge gate from 0 to 100%. To adapt to the characteristics of waste salt, the inner lining of the material mixer 7 is made of stainless steel.

[0087] In an alternative embodiment of the present invention, the material conveying device includes:

[0088] A metering screw 9 connected to the metal separator 8;

[0089] A conveyor 10 connected to the metering screw 9;

[0090] Wherein, the metering screw 9 is used to quantitatively convey the material onto the conveyor 10, and the conveyor 10 is used to convey the material to the incineration disposal device.

[0091] In this embodiment, the screened material is conveyed to the conveyor 10 through the metering screw 9. The metering screw 9 continuously conveys the material and conducts dynamic weighing and metering. The weighing sensor real-time detects the weight of the material and converts this weight signal into an electrical signal and transmits it to the controller. The microprocessor in the controller processes these signals, calculates the instantaneous flow rate and cumulative weight of the material, and is applicable to the continuous conveying, dynamic metering and feeding control of various powdery and bulk materials. To adapt to the characteristics of waste salt, the lining and spiral blades of the metering screw 9 are made of stainless steel.

[0092] For the industrial waste salt incineration pretreatment system shown in the above embodiment of the present invention, the whole package of waste salt is placed on the feeding section of the elevator 1 by a forklift and queued up for feeding waiting in turn. The feeding section can store multiple ton bags of materials. The materials are automatically lifted and fed through program control, reducing labor costs. The feeding section is equipped with a weighing function, and overweight materials trigger an alarm. After being lifted, the materials reach the feeding point, and the flipping mechanism 2 flips the tray containing the materials so that the materials enter the crushing device. After feeding, the tray returns to the ground or is stacked at a high position to the stacker 11 for stacking and recycling. The elevator 1 has a tray recycling function, and the tray can be recycled to reduce the disposal cost.

[0093] While the primary crusher 5 and the secondary crusher 6 of the crushing device crush the materials, the feeder 4 extrudes the materials. By using a crusher with a feeder 4, when the materials fall into the crusher, the push head of the feeder 4 inside the crusher presses down on the materials, providing an external force to extrude the whole block of materials towards the cutter teeth of the crusher, avoiding the slipping of the whole agglomerated materials on the cutter teeth of the crusher. The downward pressure of the push head of the feeder can crush the agglomerated waste salt blocks and improve the crushing efficiency. By crushing the industrial waste salt, the crystal salt and the ton bag can be broken into smaller sizes and burned simultaneously, solving the problem that the waste salt agglomerates and wraps the organic matter during pyrolysis, resulting in incomplete removal of the organic matter, solving the process of reprocessing the ton bag, and improving the pyrolysis rate during incineration and reducing the pyrolysis energy consumption.

[0094] The materials that meet the size requirements after crushing enter the mixer cavity. The material mixing device mixes and stirs the crushed materials. After the stirred materials are completely homogenized, the discharge gate is opened, and the mixed materials enter the metal separator 8. The metal separator 8 screens out the metal objects, and the screened materials enter the metering screw 9. The metering screw 9 is used to quantitatively convey the materials onto the conveyor 10. The conveyor 10 is used to convey the materials to the incineration disposal device. The material mixer 7 has a weighing function, mixes the waste salts with different organic matter contents, homogenizes the materials, and conveys them to the incinerator after mixing, ensuring the stable temperature in the furnace during incineration, preventing deflagration, and making the operation condition of the incinerator stable. The crushed and mixed waste salts are fully decomposed in the furnace, efficiently removing organic matter, reducing the damage to the incinerator, and improving the treatment economy. The metal separator 8 can remove the metal objects in the waste salts, providing a stable operation condition for the conveying equipment. The metering screw conveyor 10 can ensure continuous, uniform, and quantitative feeding of the materials into the conveyor 10; the conveyor 10 can be flexible in conveying the materials to the incinerator without being restricted by the site space;

[0095] Specifically, the elevator 1 can weigh the weight of the materials, and start to lift when the weight of the materials reaches the set value. To adapt to the characteristics of the waste salts, the part of the outer drum of the elevator 1 in contact with the materials is covered with a corrosion-resistant belt to prevent the materials from spilling during transportation and corroding the equipment. The feeder 4 forcibly feeds the materials to the cutting teeth of the crusher, so that the materials can be grabbed by the cutting teeth and crushed. The crusher is provided with a fixed knife to prevent the ton bag from winding. The material mixing device receives materials with different components, judges the mixing state of the materials through the stirring pressure data, discharges the materials after reaching the uniform state, and the discharge gate is controlled by a hydraulic cylinder, and the opening of the discharge gate can be controlled from 0 to 100%. To adapt to the characteristics of the waste salts, the lining and spiral blades of the metering screw 9 are made of stainless steel.

[0096] The weighing sensor of the metering screw 9 detects the weight of the materials in real time and converts this weight signal into an electrical signal and transmits it to the controller. The microprocessor in the controller processes these signals and calculates the instantaneous flow rate and cumulative weight of the materials. Due to the temperature change of the on-site environment, the waste salts are prone to caking. This system belongs to the online pretreatment method and does not require storage, avoiding secondary caking caused by storage.

[0097] In this embodiment, the specific implementation process of the controller determining the flow rate of the material conveying according to the weight of the mixed materials and controlling the conveying speed of the material conveying device and the feeding speed of the feeding device includes:

[0098] Determine the material conveying time according to t = t1 + t2 + Δt,

[0099] Among them, t1 is the crushing time of the crushing device for the material, t2 is the dumping time of the crushing device for dumping the material, Δt is the interval time, and t is the material conveying time;

[0100] Determine the flow rate of material conveying according to Q = M / t,

[0101] where M is the weight of the crushed material and Q is the flow rate of material conveying;

[0102] Determine the conveying speed of the material conveying device according to v = Q / A * ρ,

[0103] where A is the cross-sectional area of the material conveying device, i.e., the metering screw 9, ρ is the density of the material, and v is the conveying speed of the metering screw 9;

[0104] Determine the feeding flow rate of the feeding device according to W = M / Δt,

[0105] where Δt is the interval time, i.e., the feeding time, and W is the feeding flow rate;

[0106] Determine the feeding speed of the feeding device according to Z = W / D,

[0107] where D is the capacity of the tray and Z is the feeding speed of the feeding device.

[0108] In this embodiment, the controller can accurately control the running speeds of the material conveying device and the feeding device according to parameters such as the material weight and conveying time, ensuring the efficient and stable operation of the entire pretreatment process.

[0109] Example 2

[0110] As Figure 2 shown, an embodiment of the present invention provides an industrial waste salt incineration pretreatment system, including:

[0111] A feeding device for lifting the material containing industrial waste salt to a preset height;

[0112] A crushing device connected to the feeding device for crushing the material to obtain crushed material;

[0113] A material mixing device connected to the crushing device for mixing the crushed material to obtain mixed material;

[0114] A material conveying device connected to the material mixing device for conveying the mixed material to the incineration disposal device;

[0115] A controller electrically connected to the material conveying device and the feeding device is configured to determine the flow rate of material conveyance based on the weight of the mixed material, and control the conveying speed of the material conveying device and the feeding speed of the feeding device according to the flow rate.

[0116] Wherein, the feeding device may include: a hoist 1 for lifting the material containing industrial waste salt to a preset height; a unpacking machine 3 disposed between the feeding device and the feeder 4 for unpacking the material conveyed by the feeding device and then conveying it to the feeder 4.

[0117] Here, the unpacking machine 3 includes: a clamping mechanism that clamps the material at the discharge of the hoist 1 above the feeder 4; a milling cutter for cutting the lower end of the material ton bag.

[0118] Wherein, after the milling cutter cuts the lower end of the material ton bag and the material in the ton bag falls into the feeder 4, the clamping mechanism clamps the ton bag back into the tray on the hoist 1.

[0119] In this embodiment, by arranging the unpacking machine 3 between the hoist 1 and the feeder 4, direct unpacking of the material and conveying it to the feeder 4 are realized. The clamping mechanism stably clamps the material above the feeder 4, and the milling cutter cuts the lower end of the material ton bag, enabling the material to accurately fall into the feeder 4, avoiding spillage and loss of the material during the transfer process, and improving the utilization rate of the material. After the material falls into the feeder 4, the clamping mechanism of the unpacking machine 3 clamps the ton bag back into the tray on the hoist 1. This design effectively avoids the impact of the random scattering of the ton bag on the working environment, and at the same time facilitates the centralized recycling and treatment of the ton bag, meeting the requirements of environmental protection and production management.

[0120] This embodiment design reduces the risk of damage to equipment such as crushers caused by problems such as material scattering and ton bag entanglement. The precise unpacking and material conveying method of the unpacking machine 3 make the material entering the crusher more regular, reducing the probability of damage to the crusher cutter teeth due to irregular material or ton bag entanglement, and extending the service life of the equipment.

[0121] It should be noted that the structures and implementation manners of the crushing device, material mixing device, material conveying device, material conveying device, controller, and metal separator 8, and metering screw 9 in this embodiment are the same as those in the above Embodiment 1, and can achieve the same technical effects, which will not be elaborated here.

[0122] Example 3

[0123] As Figure 3 shown, an embodiment of the present invention provides an industrial waste salt incineration pretreatment system, including:

[0124] Feeding device, the feeding device includes: a hoist 1 for lifting the material containing industrial waste salt to a preset height; a tipping mechanism 2 connected to the hoist 1;

[0125] A turntable 12 connected to the feeding device, which is used to separate the material tipped by the tipping mechanism 2 to obtain dry material and viscous material;

[0126] A first crushing device and a second crushing device connected to the turntable 12; wherein, the first crushing device is used to crush the dry material to obtain first crushed material; the second crushing device is used to crush the viscous material to obtain second crushed material;

[0127] A material mixing device connected to the first crushing device and the second crushing device, which is used to mix the crushed first crushed material and second crushed material to obtain a mixed material;

[0128] A material conveying device connected to the material mixing device, the material conveying device includes:

[0129] A three-way distributor 19, the inlet of the three-way distributor 19 is connected to the outlet of the material mixing device; a screening device 20 connected to the first discharge port of the three-way distributor 19; a second belt conveyor 21 connected to the screening device 20; a metering screw mechanism 23 connected to the screening device 20; a conveying mechanism 24 connected to the second discharge port of the three-way distributor 19 and the metering screw mechanism 23; wherein, the three-way distributor 19 outputs the ton bag material in the mixed material from the first discharge port to the screening device 20, and the mixed salt after being screened by the screening device 20 enters the metering screw mechanism 23, and the material passing through the metering screw mechanism 23 is conveyed to the conveying mechanism 24; the ton bag conveyed by the screening device 20 is conveyed to the second belt conveyor 21; the three-way distributor 19 outputs the ton bag material in the mixed material from the second discharge port to the conveying mechanism 24; the conveying mechanism 24 conveys the material to the incineration disposal device;

[0130] A controller electrically connected to the material conveying device and the feeding device, which is used to determine the flow rate of material conveying according to the weight of the mixed material, and control the conveying speed of the material conveying device and the feeding speed of the feeding device according to the flow rate.

[0131] Specifically, the first crushing device includes: a first feeder 13, a first crusher 14 connected to the first feeder 13 and a second crusher 15 connected to the first crusher 14; the dry material enters the first crusher 14 through the first feeder 13 for crushing, and then enters the second crusher 15 for crushing to obtain first crushed material;

[0132] The second crushing device includes: a second feeder 17 and a third crusher 18 connected to the second feeder 17; after the viscous material enters the third crusher 18 through the second feeder 17 for crushing, second crushed material is obtained.

[0133] The screening device 20 may be a disk screen.

[0134] Furthermore, the pretreatment system further includes:

[0135] A stacker 11 connected to the elevator 1, and the pallet after feeding is transported to the stacker 11.

[0136] The first crushing device further includes:

[0137] A first belt conveyor 16 connected to the second crusher 15;

[0138] A metal separation mechanism 22 connected to the first belt conveyor 16;

[0139] Wherein, the first belt conveyor 16 transports the screened first crushed material to the metal separation mechanism 22, and the metal separation mechanism 22 screens the metal objects in the first crushed material to obtain the screened first crushed material.

[0140] The material mixing device includes:

[0141] A mixer cavity;

[0142] A weighing mechanism for weighing the crushed material placed in the mixer cavity;

[0143] A material inlet and an additive feeding port provided on the mixer cavity;

[0144] A discharge gate outlet provided on the mixer cavity.

[0145] Specifically, the screening device 20 sets the screen hole size according to the size of the crushed packaging bag, and separates the packaging bag and the material. The screening device 20 can have a beating effect on the material and can effectively separate the packaging bag and the material.

[0146] In specific work, a whole package of waste salt is placed on the feeding section of the elevator 1 by a forklift and queues up for feeding in turn; after the material is lifted to the feeding point, the turning mechanism 2 turns the tray containing the material, so that the material falls on the turntable 12, and the turntable 12 separates the material turned down by the turning mechanism 2 to obtain dry material and sticky material; the dry material enters the first crushing device, and the first crusher 14 and the second crusher 15 of the first crushing device crush the dry material in turn, and the first feeder 13 squeezes and feeds the dry material, and the first belt conveyor 16 conveys the crushed dry material to the metal sorting mechanism 22, and the metal sorting mechanism 22 screens the metal objects in the crushed dry material; the sticky material enters the second crushing device, and the third crusher 18 crushes the sticky material; the screened dry material and the crushed sticky material enter the material mixing device, and the weighing mechanism of the material mixing device weighs the dry material and the sticky material in turn, and the controller calculates the added amount of the additive according to the weights of the dry material and the sticky material, and supplements the corresponding added amount of the additive from the additive feeding port; the mixed three-way diverter 19 controls the discharge of the material from the first discharge port or the second discharge port, and the material that needs to be screened out and incinerated in the ton bag enters the first discharge port. The screening device 20 sets the screen hole size according to the size of the crushed ton bag, separates the ton bag and the material, and the screened material enters the incineration disposal device after passing through the metering screw mechanism 23 and the conveying mechanism 24 in turn, and the screened ton bag is output through the second belt conveyor 21; the material that does not need to be screened out and incinerated in the ton bag enters the second discharge port, and the conveying mechanism 24 conveys the material that does not need to be screened out and incinerated in the ton bag to the incineration disposal device.

[0147] In this embodiment, the specific implementation process in which the controller determines the flow rate of material conveyance according to the weight of the mixed material and controls the conveyance speed of the material conveyance device and the feeding speed of the feeding device includes:

[0148] Determine the material conveyance time according to t = t1 + t2 + Δt,

[0149] wherein, t1 is the crushing time of the material by the crushing device, t2 is the dumping time of the crushing device for dumping the material, Δt is the interval time, and t is the material conveyance time;

[0150] Determine the flow rate of material conveyance according to Q = M / t,

[0151] wherein, M is the weight of the crushed material and Q is the flow rate of material conveyance;

[0152] Determine the conveyance speed of the material conveyance device according to v = Q / A * ρ,

[0153] Wherein, A is the cross-sectional area of the material conveying device, i.e., the metering screw 9, ρ is the density of the material, and v is the conveying speed of the metering screw 9;

[0154] The feeding flow rate of the feeding device is determined according to W = M / Δt,

[0155] wherein, Δt is the interval time, i.e., the feeding time, and W is the feeding flow rate;

[0156] The feeding speed of the feeding device is determined according to Z = W / D,

[0157] wherein, D is the capacity of the tray, and Z is the feeding speed of the feeding device.

[0158] Further, the controller calculates the addition amount of the additive according to the respective weights of the first crushed material and the second crushed material, and supplements the corresponding addition amount of the additive from the additive feeding port.

[0159] Derived from (m1 + m2 + x)*P = m1*p1 + m2*p2 + x*p3:

[0160] x = [m1(P - p1) + m2(P - p2)] / (p3 - P)

[0161] The addition amount of the additive is obtained according to x = [m1(P - p1) + m2(P - p2)] / (p3 - P),

[0162] wherein, m1 is the weight of the first crushed material, m2 is the weight of the second crushed material, x is the addition amount of the additive, P is the expected additive content, p1 is the average organic matter content of the first crushed material, p2 is the average organic matter content of the second crushed material, and p3 is the average organic matter content of the additive.

[0163] This embodiment introduces a turntable 12, which can perform precise separation according to the differences in dryness and viscosity of the materials. Dry materials and viscous materials are significantly different in physical properties, and it is difficult to achieve ideal results with traditional unified treatment methods. For example, viscous materials are prone to caking and clogging equipment, while dry materials are relatively loose. After separation by the turntable 12, the dry materials enter the first crushing device, and the viscous materials enter the second crushing device. This targeted treatment makes the crushing process more efficient. The first crushing device is provided with two-stage crushers and supporting feeders for dry materials, which can better adapt to the characteristics of dry materials and improve the crushing efficiency and quality; the second crushing device is specifically used to process viscous materials, and through specially designed crushers and feeders, the problem of clogging of viscous materials during the crushing process is effectively avoided.

[0164] The materials after classified crushing enter the mixing device. Due to the similar characteristics of the materials, the mixing is more uniform. This is crucial for subsequent incineration disposal because uniform material mixing can ensure stable heat release during incineration, improve the removal efficiency of organic substances, make the purification effect of waste salt better, and thus enhance the economy of the entire incineration disposal.

[0165] A metal sorting mechanism 22 is provided in the first crushing device, which can effectively screen out the metal substances in the dry materials before they enter the mixing device. Industrial waste salt often contains metal impurities. If these impurities enter the subsequent conveying equipment and incineration device, it may cause equipment wear and failures, affecting the normal progress of production. Through the metal sorting mechanism 22, the stable operation of the subsequent conveying equipment is guaranteed, the service life of the equipment is extended, and the equipment maintenance cost is reduced.

[0166] The material mixing device is connected to a unique material conveying device, and the three-way distributor 19 therein has a powerful material splitting function. It can flexibly output the ton bag materials in the mixed materials from different discharge ports according to actual needs. When it is necessary to screen out the ton bags for separate treatment, the materials are output from the first discharge port to the screening equipment 20. The screening equipment 20 can set appropriate screen hole sizes according to the size of the crushed ton bags to accurately separate the ton bags and the materials. The screened materials enter the incineration disposal device through the metering screw mechanism 23 and the conveying mechanism 24, while the ton bags are output through the second belt conveyor 21; when it is not necessary to screen out the ton bags for incineration, the materials are directly output from the second discharge port to the conveying mechanism 24 and enter the incineration device. This flexible conveying and sorting method meets different production scenarios and process requirements, and improves the flexibility and adaptability of production.

[0167] The controller can accurately calculate the addition amount of the additive according to the respective weights of the first crushed material and the second crushed material, combined with the average organic matter content of the materials and the expected additive content. This precise control of additive addition ensures that during the material mixing process, an appropriate amount of additive can be added according to the characteristics of different materials to optimize the properties of the materials and improve the effect of incineration disposal. For example, for materials with a low organic matter content, the calorific value can be increased by adding a suitable additive to make the incineration process more complete and stable.

[0168] By precisely controlling the addition amount of the additive, the mixed materials can react better during incineration, reducing damage to the incinerator, further improving the removal efficiency of organic substances, and enhancing the quality and economy of waste salt treatment.

[0169] The solution described in this embodiment can adapt to various different types of industrial waste salts. Whether it is a single salt or a mixed salt, as well as waste salts with different packaging forms and material characteristics, they can all be effectively pretreated through links such as separation by the turntable 12, targeted crushing, and flexible conveying and sorting. This wide applicability enables the system to meet the needs of different enterprises and production scenarios and has strong market competitiveness.

[0170] As Figure 4 shown, an embodiment of the present invention provides a pretreatment method for industrial waste salt incineration disposal, including:

[0171] Step 11: Lift the material containing industrial waste salt to a preset height through a feeding device;

[0172] Step 12: Crush the material through a crushing device to obtain the crushed material;

[0173] Step 13: Mix the crushed material through a material mixing device to obtain the mixed material;

[0174] Step 14: Convey the mixed material to an incineration disposal device through a material conveying device;

[0175] Step 15: Determine the flow rate of material conveyance according to the weight of the mixed material;

[0176] Step 16: Control the conveying speed of the material conveying device and the feeding speed of the feeding device according to the flow rate.

[0177] Specifically, determine the material conveying time according to t = t1 + t2 + Δt,

[0178] where t1 is the crushing time of the material by the crushing device, t2 is the dumping time of the crushing device for dumping the material, Δt is the interval time, and t is the material conveying time;

[0179] Determine the flow rate of material conveyance according to Q = M / t,

[0180] where M is the weight of the crushed material and Q is the flow rate of material conveyance;

[0181] Determine the conveying speed of the material conveying device according to v = Q / A * ρ,

[0182] where A is the cross-sectional area of the material conveying device, i.e., the metering screw 9, ρ is the density of the material, and v is the conveying speed of the metering screw 9;

[0183] Determine the feeding flow rate of the feeding device according to W = M / Δt,

[0184] where Δt is the interval time, i.e., the feeding time, and W is the feeding flow rate;

[0185] Determine the feeding speed of the feeding device according to Z = W / D,

[0186] where D is the capacity of the tray and Z is the feeding speed of the feeding device.

[0187] This method can be applied to the above Figures 1 to 3 shown system. Through the cooperation of the feeder 4 and the crusher, the problem of poor crushing effect in the current industrial waste salt pretreatment is effectively solved. The extrusion effect of the pusher of the feeder 4 enables the material to be better grasped by the cutter teeth of the crusher, avoiding material slippage and significantly improving the crushing efficiency. The material mixing device can mix waste salts with different organic matter contents to homogenize the material. The problem of unstable calorific value caused by poor mixing effect of waste salts is solved, so that the incineration disposal effect of industrial waste salts is more stable. The outer part of the drum of the elevator 1 is sleeved with a corrosion-resistant belt, and the inner lining and spiral blades of the metering screw 9 are made of stainless steel. These measures effectively adapt to the characteristics of industrial waste salts, prevent the equipment from being corroded by material spillage, extend the service life of the equipment, and reduce the equipment maintenance cost. The system has functions such as automatic feeding, automatic weighing, and automatic control of the conveying speed, reducing manual intervention, lowering the labor cost, and at the same time improving the accuracy and stability of the production process. For example, the controller can accurately control the running speed of the material conveying device and the feeding device according to parameters such as material weight and conveying time to ensure the efficient and stable operation of the entire pretreatment process. The metering screw 9 can accurately control the conveying amount of the material, ensure that the material is continuously, evenly and quantitatively fed into the conveyor 10, avoid blockage and unevenness during the material conveying process, and provide a stable material supply for the subsequent incineration disposal.

[0188] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An industrial waste salt incineration disposal pretreatment system, characterized in that: include: A feeder (4) for receiving industrial waste salt material; A crushing device connected to the feeder (4), used for receiving the material delivered by the feeder (4), crushing the material to obtain crushed material; A material mixing device connected to the crushing device, used for mixing the crushed materials to obtain mixed materials; The material conveying device connected to the material mixing device is used to convey the mixed material to the incineration disposal device for incineration.

2. The industrial waste salt incineration disposal pretreatment system according to claim 1 is characterized in that: Also includes: An elevator (1) for lifting the pre-treated ton-bag waste salt material to a preset height; or, The elevator (1) and the turning mechanism (2) connected to the elevator (1) turn over the tray containing the material so that the material enters the feeder (4); A stacker (11) is connected to the elevator (1), and the pallet after being fed by the overturning mechanism (2) descends along the elevator (1) or is stacked at a high position to the stacker (11).

3. The industrial waste salt incineration disposal pretreatment system according to claim 2 is characterized in that: Also includes: A controller electrically connected to the material conveying device and the elevator (1) is used to determine the flow rate of material conveying according to the weight of the mixed material, and to control the conveying speed of the material conveying device and the feeding speed of the elevator (1) according to the flow rate.

4. The industrial waste salt incineration disposal pretreatment system according to claim 2 or 3, characterized in that: The crushing device comprises: At least one stage crusher (5) connected to the feeder (4) is used to crush the material delivered by the feeder (4) to obtain crushed material.

5. The industrial waste salt incineration disposal pretreatment system according to claim 4 is characterized in that: Also includes: The unpacking machine (3) is arranged between the elevator (1) and the feeder (4), and is used to unpack the materials transported by the elevator (1) and then transport them to the feeder (4).

6. The industrial waste salt incineration disposal pretreatment system according to claim 4 is characterized in that: Also includes: A turntable (12) connected to the elevator (1) is used to separate the material transported by the elevator (1) to obtain dry material and sticky material; The crushing device comprises: a first crushing device and a second crushing device connected to the turntable (12); Wherein, the first crushing device is used to crush the dry material to obtain a first crushed material; The second crushing device is used to crush the viscous material to obtain a second crushed material.

7. The industrial waste salt incineration disposal pretreatment system according to claim 6, characterized in that: The first crushing device comprises: a first feeder (13), a first crusher (14) connected to the first feeder (13), and a second crusher (15) connected to the first crusher (14); the dry material enters the first crusher (14) through the first feeder (13) to be crushed, and then enters the second crusher (15) to be crushed to obtain a first crushed material; The second crushing device comprises: a second feeder (17), and a third crusher (18) connected to the second feeder (17); the viscous material enters the third crusher (18) through the second feeder (17) and is crushed to obtain a second crushed material.

8. The industrial waste salt incineration disposal pretreatment system according to claim 7, characterized in that: The first crushing device also includes: a first belt conveyor (16) connected to the second crusher (15); a metal sorting mechanism (22) connected to the first belt conveyor (16); The first belt conveyor (16) conveys the first crushed material to the metal sorting mechanism (22), and the metal sorting mechanism (22) screens the metal objects in the first crushed material to obtain the screened first crushed material.

9. The industrial waste salt incineration disposal pretreatment system according to claim 8, characterized in that: The material conveying device comprises: A three-way material distributor (19), the inlet of the three-way material distributor (19) being connected to the outlet of the material mixing device; A screening device (20) connected to the first discharge port of the three-way distributor (19); a second belt conveyor (21) connected to the screening device (20); a metering screw mechanism (23) connected to the screening device (20); A conveying mechanism (24) connected to the second discharge port of the three-way distributor (19) and the metering screw mechanism (23); The three-way distributor (19) outputs the ton bag material in the mixed material from the first discharge port to the screening device (20); the mixed salt screened by the screening device (20) enters the metering screw mechanism (23); the material passing through the metering screw mechanism (23) is transported to the conveying mechanism (24); the ton bag material screened by the screening device (20) is transported to the second belt conveyor (21); The three-way distributor (19) outputs the ton bag material in the mixed material from the second discharge port to the conveying mechanism (24); The conveying mechanism (24) conveys the material to the incineration disposal device.

10. A pretreatment method for incineration disposal of industrial waste salt, characterized in that: Applied to the system according to any one of claims 1 to 9, the method comprises: receiving materials delivered by a feeder (4); crushing the material by a crushing device to obtain a crushed material; Mixing the crushed materials by a material mixing device to obtain a mixed material; The mixed material is transported to an incineration device through a material transporting device for incineration.

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