Solid waste carbonization stirring device and carbon sequestration method thereof

Abstract

The invention provides a solid waste carbonization stirring device and a carbon sequestration method thereof, and relates to the field of solid waste carbonis.The solid waste carbonization stirring device comprises a base, square supporting cylinders are installed on the rear side of the upper end face of the base in a bilateral symmetry mode, and lifting mechanisms are arranged on the square supporting cylinders; a stirring mechanism and an upper cover are mounted on the lifting mechanism; a rectangular guide sliding barrel is fixedly connected to the outer side face of the square supporting barrel, and a locking mechanism is arranged on the outer side face of the rectangular guide sliding barrel. By arranging the lifting mechanism, the cleaning and maintenance work efficiency is improved; by arranging the locking mechanism, stable sealing of the upper cover in a closed state is ensured, and the stability of the solid waste carbonization process and the quality of a final product are guaranteed; by arranging the hollow stirring shaft, the turbine impeller, the gas inlet hole and the gas dispersion through hole, in the operation process of the stirring mechanism, the turbine impeller and the sawtooth-shaped high-shear impeller are driven to rotate at a high speed, the gas-liquid contact effect is improved, carbon dioxide is more easily dissolved in slurry to participate in a reaction, and the carbonization effect is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of solid waste carbonization technology, and in particular to a solid waste carbonization stirring device and a carbonization method thereof. Background Technology

[0002] The emission of industrial solid waste such as fly ash and glass powder from industries like coal-fired power generation has been continuously increasing during the process of industrial modernization. Direct landfilling of this type of solid waste will occupy land and cause ecological problems such as soil and groundwater pollution. Meanwhile, under the background of global climate change, efficient carbon dioxide sequestration and resource utilization are key paths to address the environmental crisis. The alkaline oxides such as calcium oxide and magnesium oxide contained in this type of solid waste can undergo carbonization reactions with carbon dioxide, achieving permanent carbon dioxide sequestration and resource reuse of the carbonization products, forming a closed-loop system of "solid waste treatment - carbon dioxide sequestration - resource regeneration." Therefore, solid waste carbonization technology based on wet carbon dioxide sequestration and utilization has become a research hotspot in recent years. During the solid waste carbonization process, stirring devices such as mixing drums are usually required to achieve a concentrated and efficient carbonization reaction.

[0003] In the prior art, patent CN202210874977.0 discloses a fly ash harmless mixing and stirring device and treatment method: This relates to waste incineration treatment technology. The device's stirring cylinder is equipped with a vibration assembly, a stirring assembly, and a scraper assembly. The stirring cylinder is inclined on a base, and the stirring assembly is located inside the stirring cylinder, vertically fixed to the top of the stirring cylinder. A stirring rotor is mounted on the stirring assembly. A square hole is opened at the edge of the top of the stirring cylinder, through which the vibration assembly is lowered into the cylinder. With its center of gravity perpendicular to the ground, the vibration assembly, through a vibrator, promotes a physicochemical reaction between the fly ash components and the treatment agent inside the cylinder, generating non-toxic solidified substances. The scraper assembly is located on the side wall of the stirring cylinder and is used for stirring the fly ash material and the treatment agent, and for rapid loading and unloading. This invention, through a fly ash treatment device composed of a vibrator, a blade-shaped rotor, and scrapers, and a synergistic treatment method, degrades heavy metals and toxic fly ash into non-toxic solidified substances, improving fly ash treatment efficiency and reducing environmental pollution. In the aforementioned patent, during the solid waste carbonization process, the top cover of the mixing drum is typically fixed to the top of the drum with numerous bolts. Therefore, cleaning and maintenance of the inside of the drum requires the use of specialized tools to disassemble each bolt individually, making the process cumbersome, time-consuming, and labor-intensive, significantly reducing cleaning efficiency. Furthermore, while some mixing drums use hydraulic cylinders to drive the opening and closing of the top cover to simplify cleaning, these cylinders are prone to oil leakage after long-term operation, which can compromise the sealing performance of the closed cover, making it difficult to guarantee the stability of the solid waste carbonization reaction and the quality of the final carbonized products. For example, in the prior art, patent CN202411909593.3 describes a fly ash mixing device: it includes a mixing tank and a mixing assembly. The mixing tank has a premixing chamber, a mixing chamber, and a storage chamber arranged sequentially from top to bottom. The mixing assembly is located in the mixing chamber. The storage chamber is used to store fly ash. The premixing chamber is equipped with mushroom nozzles for spraying a hemispherical water curtain. Below the mushroom nozzles are a material tray and a drive assembly for rotating the material tray. A filter screen is placed between the premixing chamber and the mixing chamber, located below the material tray. A feeding assembly is placed between the storage chamber and the premixing chamber, with its outlet located above the material tray. This fly ash mixing device of the present invention uses a hemispherical water curtain to cover the fly ash, improving the problem of dust generation when fly ash is introduced. The material tray disperses the fly ash, facilitating initial mixing between the fly ash and the water curtain, and improving the problem of clumping when a large amount of fly ash comes into contact with the washing liquid. The aforementioned patent has poor gas-liquid contact during solid waste carbonization, thus reducing the carbonization effect. Summary of the Invention

[0004] This invention relates to a solid waste carbonization stirring device and its carbonization method, which solves the problems of existing stirring drum-type stirring devices, where the top cover is usually fixed to the top of the stirring drum with a large number of bolts, making cleaning and operation cumbersome. Devices that use hydraulic cylinders to drive the opening and closing of the top cover are prone to oil leakage due to long-term operation of the hydraulic cylinder, which damages the sealing of the top cover and makes it difficult to ensure the stability of the carbonization reaction and the quality of the product. In addition, the gas-liquid contact effect during carbonization is poor, which affects the carbonization effect.

[0005] In a first aspect, the present invention provides a solid waste carbonization stirring device and a carbonization method thereof, specifically comprising: a base, wherein a stirring cylinder is installed on the rear side of the upper end face of the base; a square support cylinder is symmetrically installed on the rear side of the upper end face of the base, and a lifting mechanism is provided on the square support cylinder; a stirring mechanism and a top cover are installed on the lifting mechanism; a rectangular guide slide is fixedly connected to the outer side of the square support cylinder, and a locking mechanism is provided on the outer side of the rectangular guide slide; the locking mechanism includes a mounting plate, a guide rod is fixedly connected to the inner side of the mounting plate, the guide rod is fixedly connected to the outer side of the rectangular guide slide, a traction electromagnet is installed on the outer side of the mounting plate, the telescopic rod of the traction electromagnet passes through the mounting plate, a sliding plate is connected to the telescopic rod of the traction electromagnet, the sliding plate is slidably connected to the guide rod, a spring is sleeved on the outside of the guide rod between the mounting plate and the sliding plate, and a locking rod is fixedly connected to the inner side of the sliding plate.

[0006] Furthermore, a push switch A is installed on the upper part of the outer side of one of the rectangular guide tubes on the left, and an extension control switch and a retraction control switch are installed sequentially from top to bottom on the front face of one of the square support tubes on the left; a control cabinet is installed on the front side of the upper end of the base.

[0007] Furthermore, a sealing ring is attached to the upper side of the mixing drum with adhesive; a discharge port is provided at the rear bottom of the mixing drum, and a valve is installed on the discharge port.

[0008] Furthermore, a heating plate is installed on the bottom surface inside the stirring drum, and a temperature sensor is installed inside the stirring drum.

[0009] Furthermore, the lifting mechanism includes a hydraulic cylinder, which is installed inside a square support cylinder. The upper end of the extension rod of the hydraulic cylinder is connected to a lifting frame. Guide slides are fixedly connected to both sides of the bottom end face of the lifting frame, and the guide slides are slidably connected to a rectangular guide slide cylinder. Limiting holes are provided on the guide slides, and the limiting holes are inserted into locking rods.

[0010] Furthermore, the stirring mechanism includes a stirring motor, which is mounted on top of a reducer. The input shaft of the reducer is connected to the rotating shaft of the stirring motor. The reducer is mounted on top of a lifting frame, and a hollow stirring shaft is fixedly connected to the lower end of the output shaft of the reducer. The hollow stirring shaft passes through the lifting frame and the upper cover. A turbine impeller and a serrated high-shear impeller are fixedly connected to the lower outer side of the hollow stirring shaft, with the serrated high-shear impeller located below the turbine impeller. An air inlet is provided on the upper side of the outer circumference of the hollow stirring shaft, and the air inlet is located inside the upper cover. The interior of the turbine impeller communicates with the interior of the hollow stirring shaft, and gas dispersion through holes are provided on the blades of the turbine impeller, which communicate with the interior of the hollow stirring shaft.

[0011] Furthermore, the top of the cover is provided with a solid waste inlet pipe, a reagent inlet pipe, and a carbon dioxide inlet pipe. The solid waste inlet pipe, the reagent inlet pipe, and the carbon dioxide inlet pipe are all connected to the inside of the cover. An electric valve is installed on the solid waste inlet pipe, and solenoid valves are installed on the reagent inlet pipe and the carbon dioxide inlet pipe. A pressure gauge is installed on the carbon dioxide inlet pipe below the solenoid valve.

[0012] Furthermore, it also includes a shielding housing, on the upper end face of which a vertical slide rod is fixedly connected. A guide plate is slidably connected to the outside of the vertical slide rod. The guide plate is fixedly connected to the front end face of a square support cylinder on the left side. A circular limit block is fixedly connected to the upper end of the vertical slide rod. The shielding housing is located outside the extension control switch and the retraction control switch. A push switch B is installed on the top of the shielding housing. A circular through hole is opened at the lower part of the front end face of the shielding housing. A handle is provided on the front side of the shielding housing.

[0013] Furthermore, when the shielding housing moves upward to its limit position, the button of the extended control switch matches the horizontal position of the circular through hole, and at this time, pressing the button on the top of switch B makes close contact with the bottom surface of the guide plate.

[0014] This invention discloses a carbon fixation method using a solid waste carbonization stirring device, comprising the following steps: First, industrial solid waste powders such as fly ash and vitreous matter are added into the stirring drum through the solid waste feed pipe; then, 1% by mass of 0.1 mol / L dilute hydrochloric acid reagent is added into the stirring drum through the reagent addition pipe; next, the stirring mechanism is started to stir the solid waste powder and dilute hydrochloric acid reagent into a slurry; then, the electric valve and solenoid valve are closed, and carbon dioxide is added into the stirring drum through the carbon dioxide addition pipe; simultaneously, the heating plate is controlled to heat the slurry, and the temperature is monitored in real time by a temperature sensor. At this time, the slurry and carbon dioxide undergo a carbonization reaction to obtain a carbonized slurry, realizing the sequestration and utilization of carbon dioxide. During the carbonization process, the carbon dioxide concentration is set to 70~85% vol, the gas pressure is 0.1~0.3 MPa, the temperature is 40℃-60℃, the carbonization time is 30~60 min, and the stirring speed of the impeller on the stirring mechanism is 120 revolutions per minute. This completes the operation steps of the carbon fixation method of this solid waste carbonization stirring device.

[0015] This invention provides a solid waste carbonization stirring device and a carbonization method thereof, which have the following beneficial effects: First, this invention achieves multifunctional carbonization treatment of solid waste by classifying and controlling carbonization parameters such as carbon dioxide concentration, gas pressure, temperature, stirring rate and carbonization time, thereby accelerating the reaction between solid waste and carbon dioxide and significantly improving the carbon dioxide sequestration and utilization rate of solid waste.

[0016] Secondly, by setting up a hollow stirring shaft, a turbine impeller, an air inlet, and a gas dispersion through-hole, this invention can drive the turbine impeller and the serrated high-shear impeller to rotate at high speed during the operation of the stirring mechanism. When the turbine impeller rotates at high speed, a local low-pressure zone will be formed below the blades. It is this suction force that draws the gas inside the upper cover into the turbine impeller through the hollow stirring shaft. Finally, the gas is sprayed into the slurry inside the stirring tank through the gas dispersion through-hole on the turbine impeller blades, thereby effectively improving the gas-liquid contact effect and making it easier for carbon dioxide to dissolve into the slurry and participate in the reaction, thus greatly improving the carbonization effect.

[0017] Third, by setting a serrated high-shear impeller at the lower end of the hollow stirring shaft, the high-speed rotating serrated high-shear impeller can provide extremely strong mechanical shearing force, just like a pulverizer. This can break up and deagglomerate the bottom sediment and form turbulence at the bottom of the stirring drum, thereby re-lifting the heavy particles that have settled to the bottom, ensuring uniform solid-liquid suspension, improving the solid-liquid mixing effect, and thus further enhancing the carbonization effect.

[0018] Fourth, by setting up a lifting mechanism, this invention significantly optimizes the opening and closing process of the top cover. When it is necessary to open the top cover to clean and maintain the inside of the mixing drum, the operator only needs to press the button of the extension control switch to drive the hydraulic cylinder telescopic rod to extend, thereby driving the lifting frame, guide plate, mixing mechanism and top cover to move upward in a straight line, realizing the rapid and stable opening of the top cover. This design completely eliminates the traditional bolt fastening method and eliminates the need for cumbersome disassembly operations with the help of tools, making the operation process simpler, more time-saving and labor-saving, thereby greatly improving the efficiency of cleaning and maintenance operations.

[0019] Fifth, this invention ensures a stable seal of the top cover when closed by setting a locking mechanism. When the top cover is closed, the locking rod and the limiting hole on the guide slide are on the same axis. At the same time, the button of switch A is pressed by the lifting frame, triggering the traction electromagnet to be de-energized. At this time, under the action of the spring force outside the guide rod, the sliding plate drives the locking rod to move inward, so that the locking rod is inserted into the limiting hole, thereby realizing a reliable mechanical locking and limiting effect on the lifting frame, preventing the top cover from loosening in the closed state. Thus, even if the hydraulic cylinder leaks oil due to long-term use, the top cover can still maintain a stable closed state, maintain the airtight environment required for the reaction, and effectively ensure the stability of the solid waste carbonization process and the quality of the final product.

[0020] Sixth, by using a shielding shell and a circular through hole, this invention ensures that when the top cover is opened, the button of the extended control switch is blocked by the shielding shell. The operator must pull the shielding shell upwards to align the button with the horizontal position of the circular through hole before pressing the button with their finger through the hole. This drives the hydraulic cylinder to open the cover. When the button aligns with the horizontal position of the circular through hole, pressing the button on top of switch B makes it contact the bottom surface of the guide plate, energizing the traction electromagnet. The telescopic rod of the traction electromagnet moves the sliding plate and locking rod outwards, causing the locking rod to be pulled out of the limiting hole. This avoids interfering with the opening operation and effectively prevents equipment damage and safety accidents caused by misoperation or forced opening without releasing the locking state, significantly improving the operational safety of this solid waste carbonization mixing device. Attached Figure Description

[0021] To more clearly illustrate the technical solution of the present invention, the accompanying drawings of the present invention will be briefly described below.

[0022] In the attached diagram: Figure 1 A three-dimensional structural schematic diagram of this application is shown; Figure 2 The diagram shows the stirring mechanism and the structure of the top cover in the raised state of this application; Figure 3This diagram illustrates the structure of this application in its disassembled state. Figure 4 This paper shows a schematic diagram of a partially cross-sectional view of the stirring tank of this application; Figure 5 A schematic diagram of the lifting mechanism of this application is shown; Figure 6 A schematic diagram of the structure of the top cover of this application is shown; Figure 7 This paper shows a partial cross-sectional structural diagram of the rectangular guide slide of this application; Figure 8 A schematic diagram of the locking mechanism in its disassembled state is shown; Figure 9 This diagram shows the structure of the application with the top cover in the closed state; Figure 10 This application shows Figure 1 A magnified structural diagram of part A in the middle; Figure 11 This paper shows a schematic diagram of a partial cross-section of the shielding housing of this application; Figure 12 This diagram shows the structure of the shielding housing of this application when it moves upward to its limit position; Figure 13 A schematic diagram of the stirring mechanism in operation is shown.

[0023] List of reference numerals 1. Base; 101. Square support cylinder; 102. Rectangular guide slide cylinder; 103. Press switch A; 104. Extension control switch; 105. Retraction control switch; 2. Mixing drum; 201. Sealing ring; 202. Discharge port; 203. Heating plate; 204. Temperature sensor; 3. Lifting mechanism; 301. Hydraulic cylinder; 302. Lifting frame; 303. Guide slide plate; 304. Limiting hole; 4. Stirring mechanism; 401. Stirring motor; 402. Reducer; 403. Hollow stirring shaft; 404. Turbine impeller; 405. Serrated high-shear impeller; 406. Air inlet; 407. Gas dispersion through hole; 5. Top cover; 501. Solid waste feed pipe; 502. Reagent inlet pipe; 503. Carbon dioxide inlet pipe; 504. Electric valve; 505. Solenoid valve; 506. Pressure gauge; 6. Locking mechanism; 601. Mounting plate; 602. Guide rod; 603. Traction electromagnet; 604. Sliding plate; 605. Locking rod; 7. Sheath housing; 701. Vertical slide bar; 702. Guide plate; 703. Circular limit block; 704. Press switch B; 705. Circular through hole; 8. Control cabinet. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1 to 13 : This invention proposes a solid waste carbonization stirring device and its carbonization method, comprising: a base 1, a stirring cylinder 2 installed on the rear side of the upper end face of the base 1; a square support cylinder 101 symmetrically installed on the rear side of the upper end face of the base 1, a lifting mechanism 3 provided on the square support cylinder 101; a stirring mechanism 4 and an upper cover 5 installed on the lifting mechanism 3; a rectangular guide slide cylinder 102 fixedly connected to the outer side of the square support cylinder 101, a locking mechanism 6 provided on the outer side of the rectangular guide slide cylinder 102; the locking mechanism 6 includes a mounting plate 601, the mounting plate 601... A guide rod 602 is fixedly connected to the inner side of the rectangular guide slide 102. A traction electromagnet 603 is installed on the outer side of the mounting plate 601. The telescopic rod of the traction electromagnet 603 passes through the mounting plate 601. A sliding plate 604 is connected to the telescopic rod of the traction electromagnet 603. The sliding plate 604 is slidably connected to the guide rod 602. A spring is sleeved on the outside of the guide rod 602 between the mounting plate 601 and the sliding plate 604. A locking rod 605 is fixedly connected to the inner side of the sliding plate 604. By adopting the above technical solution, when the upper cover 5 is closed in place, the locking rod 605 and the limiting hole 304 opened on the guide slide plate 303 are on the same axis. At the same time, the button of the pressing switch A103 is pressed by the lifting frame 302, triggering the traction electromagnet 603 to be de-energized. At this time, under the action of the spring force outside the guide rod 602, the sliding plate 604 drives the locking rod 605 to move inward, so that the locking rod 605 is inserted into the limiting hole 304, thereby realizing a reliable mechanical locking and limiting effect on the lifting frame 302, preventing the upper cover 5 from loosening in the closed state. Thus, even if the hydraulic cylinder 301 has an oil leakage failure due to long-term use, the upper cover 5 can still maintain a stable closed state, effectively ensuring the stability of the solid waste carbonization process and the quality of the final product.

[0026] A push switch A103 is installed on the upper part of the outer side of a rectangular guide cylinder 102 on the left side. An extension control switch 104 and a retraction control switch 105 are installed sequentially from top to bottom on the front face of a square support cylinder 101 on the left side. A control cabinet 8 is installed on the front side of the upper end of the base 1. Both the extension control switch 104 and the retraction control switch 105 are electrically connected to the solenoid valve 505 that controls the extension and retraction of the hydraulic cylinder 301 telescopic rod, and are used to control the extension and retraction movement of the hydraulic cylinder 301 telescopic rod.

[0027] A sealing ring 201 is attached to the upper side of the mixing drum 2 with adhesive; a discharge port 202 is provided at the rear bottom of the mixing drum 2, and a valve is installed on the discharge port 202 for discharging carbonized slurry.

[0028] A heating plate 203 is installed on the bottom surface inside the mixing drum 2 for heating the slurry, and a temperature sensor 204 is installed inside the mixing drum 2 for real-time monitoring of the slurry temperature.

[0029] The lifting mechanism 3 includes a hydraulic cylinder 301, which is installed inside the square support cylinder 101. The upper end of the telescopic rod of the hydraulic cylinder 301 is connected to a lifting frame 302. Guide slide plates 303 are fixedly connected to the left and right sides of the bottom surface of the lifting frame 302. The guide slide plates 303 are slidably connected to the rectangular guide slide cylinder 102. The lifting mechanism 3 is used to open and close the upper cover 5.

[0030] A limiting insertion hole 304 is provided on the guide slide plate 303. The limiting insertion hole 304 is inserted into the locking rod 605 to effectively limit the lifting frame 302, avoid damaging the sealing performance of the upper cover 5 after it is closed, and effectively ensure the stability of the solid waste carbonization reaction and the quality of the final carbonization product.

[0031] The stirring mechanism 4 includes a stirring motor 401, which is mounted on top of a reducer 402. The input shaft of the reducer 402 is connected to the rotating shaft of the stirring motor 401. The reducer 402 is mounted on top of a lifting frame 302. A hollow stirring shaft 403 is fixedly connected to the lower end of the output shaft of the reducer 402. The hollow stirring shaft 403 passes through the lifting frame 302 and the upper cover 5. A turbine impeller 404 and a serrated high-shear impeller 405 are fixedly connected to the lower outer side of the hollow stirring shaft 403. The serrated high-shear impeller 405 is located below the turbine impeller 404. An air inlet 406 is opened on the upper side of the outer circumference of the hollow stirring shaft 403. The air inlet 406 is located inside the upper cover 5. The interior of the turbine impeller 404 is connected to the interior of the hollow stirring shaft 403. A gas dispersion through hole 407 is opened on the blades of the turbine impeller 404. The gas dispersion through hole 407 is connected to the interior of the hollow stirring shaft 403. By adopting the above technical solution, specifically as follows: Figure 13As shown, during the operation of the stirring mechanism 4, the turbine impeller 404 and the serrated high-shear impeller 405 can be driven to rotate at high speed. When the turbine impeller 404 rotates at high speed, a local low-pressure zone will be formed below the blades. Through this suction, the gas inside the upper cover 5 is drawn into the turbine impeller 404 through the hollow stirring shaft 403. Finally, it is sprayed into the slurry inside the stirring drum 2 through the gas dispersion through-hole 407 opened on the blades of the turbine impeller 404, generating a large number of carbon dioxide bubbles, thereby effectively improving the gas-liquid contact effect and making it easier for carbon dioxide to dissolve into the slurry and participate in the reaction. In addition, the high-speed rotating sawtooth high-shear impeller 405, like a shredder, provides extremely strong mechanical shearing force, which can break up and deagglomerate the bottom sediment and form turbulence at the bottom of the mixing drum 2, thereby re-lifting the heavy particles that have settled to the bottom, ensuring uniform solid-liquid suspension and improving the solid-liquid mixing effect.

[0032] The top of the cover 5 is equipped with a solid waste inlet pipe 501, a reagent inlet pipe 502, and a carbon dioxide inlet pipe 503. All three pipes are connected to the interior of the cover 5. The solid waste inlet pipe 501 is used to add industrial solid waste powders such as fly ash and glass to the mixing drum 2. The reagent inlet pipe 502 is used to add dilute hydrochloric acid reagent to the mixing drum 2. The carbon dioxide inlet pipe 503 is used to add carbon dioxide to the mixing drum 2. An electric valve 504 is installed on the solid waste inlet pipe 501. Solenoid valves 505 are installed on both the reagent inlet pipe 502 and the carbon dioxide inlet pipe 503. A pressure gauge 506 is installed on the carbon dioxide inlet pipe 503 below the solenoid valve 505 to detect the internal pressure of the mixing drum 2.

[0033] Example 2, based on Example 1, such as Figures 10 to 12 As shown, it also includes a shielding housing 7. A vertical slide rod 701 is fixedly connected to the upper end face of the shielding housing 7. A guide plate 702 is slidably connected to the outside of the vertical slide rod 701. The guide plate 702 is fixedly connected to the front end face of a square support cylinder 101 on the left side. A circular limit block 703 is fixedly connected to the upper end of the vertical slide rod 701. The shielding housing 7 is located outside the extension control switch 104 and the retraction control switch 105. A push switch B704 is installed on the top of the shielding housing 7. A circular through hole 705 is opened at the lower part of the front end face of the shielding housing 7. A handle is provided on the front side of the shielding housing 7. When the shielding housing 7 moves upward to the limit position, the button of the extension control switch 104 matches the horizontal position of the circular through hole 705, and at this time the button on the top of the push switch B704 is in close contact with the bottom end face of the guide plate 702. By adopting the above technical solution, when opening the top cover 5, because the button of the extension control switch 104 is blocked by the cover housing 7, the operator must pull the cover housing 7 upward so that the button of the extension control switch 104 is aligned with the horizontal position of the circular through hole 705 before the finger can be inserted through the circular through hole 705 to press the button of the extension control switch 104. When the button of the extension control switch 104 is aligned with the horizontal position of the circular through hole 705, the top button of the pressing switch B704 is pressed by the guide plate 702, which energizes the traction electromagnet 603. The telescopic rod of the traction electromagnet 603 drives the sliding plate 604 and the locking rod 605 to move outward, so that the locking rod 605 is pulled out from the limit hole 304, thus avoiding affecting the opening operation and effectively preventing equipment damage and safety accidents caused by misoperation or forced opening of the cover without releasing the locking state.

[0034] This invention discloses a carbon fixation method for a solid waste carbonization stirring device, comprising the following steps: First, industrial solid waste powders such as fly ash and glass are added into the stirring drum 2 through the solid waste feed pipe 501; then, 0.1 mol / L dilute hydrochloric acid reagent with a mass fraction of 1% of the solid waste powder is added into the stirring drum 2 through the reagent addition pipe 502; then, the stirring mechanism 4 is activated to stir the solid waste powder and dilute hydrochloric acid reagent into a slurry; next, the electric valve 504 and the solenoid valve 505 are closed, and carbon dioxide is added into the stirring drum 2 through the carbon dioxide addition pipe 503. Carbon dioxide is oxidized; simultaneously, the heating plate 203 heats the slurry, and the temperature is monitored in real time by the temperature sensor 204. At this time, the slurry and carbon dioxide undergo a carbonization reaction to obtain carbonized slurry, realizing the sequestration and utilization of carbon dioxide. During the carbonization process, the carbon dioxide concentration is set to 70~85%vol, the gas pressure is 0.1~0.3MPa, the temperature is 40℃-60℃, the carbonization time is 30~60min, and the stirring speed of the paddle on the stirring mechanism 4 is 120 revolutions per minute. This completes the operation steps of the carbon sequestration method of this solid waste carbonization stirring device.

[0035] The working principle of this invention is as follows: During use, pressing the compression control switch 105 controls the retraction of the hydraulic cylinder 301's telescopic rod, thereby driving the lifting frame 302, guide slide plate 303, stirring mechanism 4, and upper cover 5 to move downwards in a straight line, ensuring the bottom surface of the upper cover 5 is in close contact with the upper surface of the sealing ring 201. At this time, the upper cover 5 is in the closed state. Then, industrial solid waste powders such as fly ash and vitreous matter are added into the stirring drum 2 through the solid waste feed pipe 501. Subsequently, 0.1 mol / L dilute hydrochloric acid reagent (1% by mass of the solid waste powder) is added into the stirring drum 2 through the reagent addition pipe 502. The stirring mechanism 4 is then activated to stir the solid waste powder and dilute hydrochloric acid reagent into a slurry. Next, the electric valve 504 and solenoid valve 505 are closed, and carbon dioxide is added into the stirring drum 2 through the carbon dioxide addition pipe 503, while simultaneously controlling the heating plate 20... 3. The slurry is heated, and the temperature is monitored in real time by temperature sensor 204. At this time, the slurry reacts with carbon dioxide to form carbonized slurry, realizing the sequestration and utilization of carbon dioxide. During the carbonization process, the carbon dioxide concentration is set to 70~85%vol, the gas pressure is 0.1~0.3MPa, the temperature is 40℃-60℃, and the carbonization time is 30~60min. The stirring speed of the impeller on the stirring mechanism 4 is 120 rpm. By graded control of carbonization parameters such as carbon dioxide concentration, gas pressure, temperature, stirring rate, and carbonization time, the reaction between solid waste and carbon dioxide is accelerated, and multifunctional carbonization treatment of solid waste is realized, which significantly improves the carbon dioxide sequestration and utilization rate of solid waste. After carbonization treatment, the carbonized slurry is discharged from the discharge port 202 and then placed in a vacuum drying oven for drying and crushing to obtain carbonized powder for subsequent use.

[0036] During the operation of the stirring mechanism 4, the hollow stirring shaft 403 is driven to rotate rapidly by the stirring motor 401 and the reducer 402. The hollow stirring shaft 403 drives the turbine impeller 404 and the serrated high-shear impeller 405 to rotate at high speed. When the turbine impeller 404 rotates at high speed, a local low-pressure zone (vacuum effect) is formed below the blades. It is this suction that draws the gas (carbon dioxide) inside the upper cover 5 into the turbine impeller 404 through the hollow stirring shaft 403. Finally, the gas is sprayed into the slurry inside the stirring drum 2 through the gas dispersion holes 407 on the blades of the turbine impeller 404, generating a large number of carbon dioxide bubbles. This effectively improves the gas-liquid contact effect, making it easier for carbon dioxide to dissolve into the slurry and participate in the reaction. Therefore, the carbonization effect is greatly improved. Specifically, as shown in the figure... Figure 13 As shown, this generates a downward axial flow and an outward radial flow, driving the slurry within the entire mixing drum 2 to undergo macroscopic circulation; During the carbonization process of the slurry, the sediment settles to the bottom of the inner side of the mixing drum 2. Then, the high-speed rotating sawtooth high-shear impeller 405, like a pulverizer, provides extremely strong mechanical shearing force, which ultimately breaks up and deagglomerates the sediment at the bottom. Turbulence is formed at the bottom of the mixing drum 2, which re-lifts the heavy particles that have settled to the bottom, ensuring uniform solid-liquid suspension and improving the solid-liquid mixing effect, thus further improving the carbonization effect.

[0037] When it is necessary to open the top cover 5 to clean and maintain the inside of the mixing drum 2, the operator first needs to pull the shielding housing 7 upwards. This is because the button of the extension control switch 104 is blocked by the shielding housing 7, causing the press switch B704 to move upwards. When the shielding housing 7 moves upwards to its limit position, the button of the extension control switch 104 aligns with the horizontal position of the circular through hole 705. At this time, the button on top of the press switch B704 is in close contact with the bottom surface of the guide plate 702, energizing the traction electromagnet 603. After the traction electromagnet 603 is energized, its telescopic rod moves the sliding plate 604 and the locking rod 605 outwards, automatically pulling the locking rod 605 out of the limit hole 304 to avoid affecting the upward movement of the lifting frame 302. The external spring of the guide rod 602 is in a compressed state. Then, a finger passes through the circular through hole 705 and presses the button of the extension control switch 104, thereby controlling the extension rod of the hydraulic cylinder 301 to extend. This causes the lifting frame 302, guide slide plate 303, stirring mechanism 4 and upper cover 5 to move upward in a straight line, quickly opening the upper cover 5. Then, the inside of the stirring drum 2 can be cleaned and maintained. During the process of opening the upper cover 5, there is no need to use special tools to disassemble the bolts one by one, which makes the operation simple, time-saving and labor-saving, and greatly improves the efficiency of cleaning operations. After the operation of pressing the button of the extension control switch 104 is completed, the cover housing 7 is released. The cover housing 7 automatically falls back to its original position under the action of gravity. At this time, the button of the retraction control switch 105 matches the horizontal position of the circular through hole 705.

[0038] During the closing process of the upper cover 5, the button of the retraction control switch 105 can be pressed directly through the circular through hole 705 to control the retraction movement of the hydraulic cylinder 301 telescopic rod, which drives the lifting frame 302, guide slide plate 303, stirring mechanism 4 and upper cover 5 to move downward in a straight line. At this time, the traction electromagnet 603 is energized. When the upper cover 5 is in the closed state, the locking rod 605 and the limit insertion hole 304 on the guide slide plate 303 are on the same axis, and the button of the pressing switch A103 is pressed by the lifting frame 302. The pressing switch A103 controls When the traction electromagnet 603 is de-energized, the sliding plate 604, under the action of the spring force outside the guide rod 602, moves the locking rod 605 inward, causing the locking rod 605 to insert into the limiting hole 304, thus effectively limiting the lifting frame 302. At this time, the lifting frame 302 cannot move upward, so even if the hydraulic cylinder 301 experiences an oil leakage fault after long-term operation, it will not affect the stability of the top cover 5 in the closed state, thereby avoiding damage to the sealing performance of the top cover 5 after it is closed, effectively ensuring the stability of the solid waste carbonization reaction and the quality of the final carbonization product.

[0039] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0040] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0041] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A solid waste carbonization mixing device, comprising: A base (1) is provided with a stirring cylinder (2) mounted on the rear side of the upper end face of the base (1); characterized in that a square support cylinder (101) is symmetrically mounted on the rear side of the upper end face of the base (1), and a lifting mechanism (3) is provided on the square support cylinder (101); a stirring mechanism (4) and a top cover (5) are mounted on the lifting mechanism (3); a rectangular guide slide cylinder (102) is fixedly connected to the outer side of the square support cylinder (101), and a locking mechanism (6) is provided on the outer side of the rectangular guide slide cylinder (102); the locking mechanism (6) includes a mounting plate (601), and the inner side of the mounting plate (601) is fixedly connected to the rectangular guide slide cylinder (102). A guide rod (602) is fixedly connected to the outer side of the rectangular guide slide (102). A traction electromagnet (603) is installed on the outer side of the mounting plate (601). The telescopic rod of the traction electromagnet (603) passes through the mounting plate (601). A sliding plate (604) is connected to the telescopic rod of the traction electromagnet (603). The sliding plate (604) is slidably connected to the guide rod (602). A spring is sleeved on the outside of the guide rod (602) between the mounting plate (601) and the sliding plate (604). A locking rod (605) is fixedly connected to the inner side of the sliding plate (604).

2. The solid waste carbonization stirring device according to claim 1, characterized in that: A push switch A (103) is installed on the upper outer side of the rectangular guide tube (102) on the left side, and an extension control switch (104) and a retraction control switch (105) are installed on the front end face of the square support tube (101) on the left side from top to bottom; a control cabinet (8) is installed on the front side of the upper end face of the base (1).

3. The solid waste carbonization stirring device according to claim 1, characterized in that: A sealing ring (201) is attached to the upper side of the mixing drum (2) by adhesive; a discharge port (202) is provided on the rear bottom side of the mixing drum (2), and a valve is installed on the discharge port (202).

4. The solid waste carbonization stirring device according to claim 1, characterized in that: A heating plate (203) is installed on the bottom surface inside the stirring drum (2), and a temperature sensor (204) is installed inside the stirring drum (2).

5. The solid waste carbonization stirring device according to claim 1, characterized in that: The lifting mechanism (3) includes a hydraulic cylinder (301), which is installed inside a square support cylinder (101). The upper end of the telescopic rod of the hydraulic cylinder (301) is connected to a lifting frame (302). Guide slide plates (303) are fixedly connected to the left and right sides of the bottom end face of the lifting frame (302). The guide slide plates (303) are slidably connected to the rectangular guide slide cylinder (102). A limit insertion hole (304) is opened on the guide slide plate (303), and the limit insertion hole (304) is inserted into the locking rod (605).

6. The solid waste carbonization stirring device according to claim 5, characterized in that: The stirring mechanism (4) includes a stirring motor (401), which is mounted on top of a reducer (402). The input shaft of the reducer (402) is connected to the rotating shaft of the stirring motor (401). The reducer (402) is mounted on top of a lifting frame (302). A hollow stirring shaft (403) is fixedly connected to the lower end of the output shaft of the reducer (402). The hollow stirring shaft (403) passes through the lifting frame (302) and the upper cover (5). A turbine impeller is fixedly connected to the lower outer side of the hollow stirring shaft (403). (404) and a serrated high-shear impeller (405), the serrated high-shear impeller (405) being located below the turbine impeller (404); an air inlet (406) is provided on the outer circumferential surface of the hollow stirring shaft (403), the air inlet (406) being located inside the upper cover (5); the interior of the turbine impeller (404) is connected to the interior of the hollow stirring shaft (403), and a gas dispersion through hole (407) is provided on the blades of the turbine impeller (404), the gas dispersion through hole (407) being connected to the interior of the hollow stirring shaft (403).

7. The solid waste carbonization stirring device according to claim 1, characterized in that: The top of the cover (5) is provided with a solid waste inlet pipe (501), a reagent inlet pipe (502) and a carbon dioxide inlet pipe (503). The solid waste inlet pipe (501), the reagent inlet pipe (502) and the carbon dioxide inlet pipe (503) are all connected to the inside of the cover (5). An electric valve (504) is installed on the solid waste inlet pipe (501). Solenoid valves (505) are installed on the reagent inlet pipe (502) and the carbon dioxide inlet pipe (503). A pressure gauge (506) is installed on the carbon dioxide inlet pipe (503) below the solenoid valve (505).

8. A solid waste carbonization stirring device according to claim 2, characterized in that: It also includes a shielding housing (7), on which a vertical slide rod (701) is fixedly connected to the upper end face. A guide plate (702) is slidably connected to the outside of the vertical slide rod (701). The guide plate (702) is fixedly connected to the front end face of a square support cylinder (101) on the left side. A circular limit block (703) is fixedly connected to the upper end of the vertical slide rod (701). The shielding housing (7) is located outside the extension control switch (104) and the retraction control switch (105). A push switch B (704) is installed on the top of the shielding housing (7). A circular through hole (705) is opened at the lower part of the front end face of the shielding housing (7). A handle is provided on the front side of the shielding housing (7).

9. A solid waste carbonization stirring device according to claim 8, characterized in that: When the shielding housing (7) moves upward to the limit position, the button of the extended control switch (104) matches the horizontal position of the circular through hole (705), and at this time, the button on the top of the switch B (704) is in close contact with the bottom surface of the guide plate (702).

10. The carbon fixation method of a solid waste carbonization stirring device according to claim 1, characterized in that: Includes the following steps: S1. First, fly ash, glass and other industrial solid waste powders are added into the mixing drum (2) through the solid waste feed pipe (501); S2. Subsequently, 0.1 mol / L dilute hydrochloric acid reagent with a mass fraction of 1% of the solid waste powder is added to the inside of the stirring tank (2) through the reagent addition tube (502); S3. Then start the stirring mechanism (4) to stir the solid waste powder and dilute hydrochloric acid reagent into a slurry; S4. Next, close the electric valve (504) and the solenoid valve (505), and add carbon dioxide into the mixing tank (2) through the carbon dioxide addition pipe (503); S5. Simultaneously control the heating plate (203) to heat the slurry, and monitor the temperature in real time through the temperature sensor (204). At this time, the slurry reacts with carbon dioxide to obtain carbonized slurry, realizing the storage and utilization of carbon dioxide. During the carbonization process, the carbon dioxide concentration is set to 70~85%vol, the gas pressure is 0.1~0.3MPa, the temperature is 40℃-60℃, the carbonization time is 30~60min, and the stirring speed of the paddle on the stirring mechanism (4) is 120 revolutions per minute. This completes the operation steps of the carbonization method of this solid waste carbonization stirring device.

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