Device for mineralizing and solidifying carbon dioxide by using steel slag

Abstract

The utility model discloses a kind of carbon dioxide mineralization solidification device using steel slag, it is related to carbon sequestration technology field, including box, the inside of the box is provided with conveyor belt assembly, the conveyor belt assembly is equipped with turnover mechanism, the top of the box one end is provided with a discharge pipe, the top of the box middle end is provided with water spray pipe, the top of the box another end is provided with air inlet pipe.In the utility model, set turnover mechanism, drive turnover plate to do linear reciprocating movement, the steel slag on conveyor belt is continuously, dynamically turned over, increase adjusting assembly and stop block, realize the automatic, periodic transformation of turnover plate in reciprocating process, this design ensures that steel slag is alternately turned over to two sides, avoids the material accumulation and reaction dead zone caused by one-way turning over, guarantees that steel slag material is heated, receives humidity and the uniformity of contact carbon dioxide in reaction zone, so that the final product with stable composition, carbonization uniformity is obtained.

Description

Technical Field

[0001] This utility model relates to the field of carbon sequestration technology, and in particular to a device for solidifying carbon dioxide by mineralizing steel slag. Background Technology

[0002] Carbon dioxide emissions are mainly generated by industrial production, with the steel industry accounting for the majority. The steel industry also produces a large amount of steel slag during production. Steel slag contains a large amount of active components such as calcium silicate and free calcium oxide, which can undergo a mineralization reaction with carbon dioxide to form stable calcium carbonate, thereby achieving permanent carbon dioxide sequestration and reducing the pressure of carbon emission reduction.

[0003] Announcement No.: CN222665731U, a device for solidifying carbon dioxide using steel slag mineralization, includes a support frame with a box on the support frame. The box has an inlet on the upper side of one end along its length and an outlet on the lower side of the other end. A first conveyor belt is installed inside the box along its length, with one end of the first conveyor belt located above the outlet. A water spray pipe is installed inside the box along its width, above the first conveyor belt, and has multiple nozzles along its length. A jet injection main pipe is installed inside the box along its width, above the first conveyor belt, and has multiple jet injection branch pipes along its length. However, in actual use, it has been found that the commonly used steel slag mineralization solidification carbon dioxide steps are quite similar to those in the above patent, but during the carbonization process, the steel slag is prone to caking, affecting the reaction efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a device for solidifying carbon dioxide by mineralizing steel slag in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for solidifying carbon dioxide by mineralizing steel slag, comprising a box body, a conveyor belt assembly inside the box body, a flipping mechanism on the conveyor belt assembly, a feeding pipe at one end of the top of the box body, a water spray pipe at the middle of the top of the box body, and an air inlet pipe at the other end of the top of the box body.

[0006] Preferably, the flipping mechanism includes a telescopic cylinder installed on one side of the box body. The output end of the telescopic cylinder, which extends into the box body, is connected to a base. Multiple flipping plates, which are equidistantly distributed, are rotatably installed on the bottom of the base. An adjustment component for adjusting the angle of the flipping plates is provided inside the base. A stop block that cooperates with the adjustment component is installed inside the box body.

[0007] Preferably, a rotating rod is installed on the top of the flipping plate, and a synchronization assembly connecting multiple rotating rods is provided inside the base. The synchronization assembly includes multiple synchronous pulleys and a synchronous belt sleeved on the outside of the multiple synchronous pulleys. The multiple synchronous pulleys are fixedly installed on the outside of the multiple rotating rods.

[0008] Preferably, the adjusting assembly includes a fixed rod, a lever, a stop rod, and a sleeve. The fixed rod is rotatably mounted on the outside of one end of the rotating rod, and the lever is fixedly mounted on the outside of one end of the rotating rod. Support rods are installed on the top of both the fixed rod and the lever at the end away from the rotating rod. Hook springs are sleeved on the two support rods. The top of the support rod of the fixed rod is fixedly connected to the top of the inside of the base. Stop rods are symmetrically installed at the bottom of the inside of the base. The stop rods are located at both ends of the lever. A sleeve is sleeved at the end of the lever. Slide rods are installed at both ends of the sleeve. A compression ball that is in contact with the stop block is installed at the end of the slide rod that extends out of the base.

[0009] Preferably, baffles are installed on both sides of the base, and the two ends of the baffles are inclined toward the sides of the box.

[0010] Preferably, the conveyor belt assembly includes a rotating roller, a motor, and a conveyor belt. The rotating roller is rotatably mounted at both ends inside the housing. The motor is mounted on the outside of the housing, and its output end is fixedly connected to one of the rotating rollers. The outer sides of both rotating rollers are tensioned with conveyor belts. A collection box that can be pulled out from one end of the housing is placed at the lower end inside the housing.

[0011] Preferably, limit rods are installed on both sides of the interior of the housing, and the limit rods pass through the base.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this application, a turning mechanism is set up to drive the turning plate to move linearly back and forth, continuously and dynamically turning the steel slag on the conveyor belt. This operation can effectively break the hard shell formed by the precipitation of calcium carbonate and silica gel, significantly increase the contact surface area between the steel slag and carbon dioxide gas and moisture, thereby greatly improving the mineralization reaction rate and solidification efficiency.

[0013] In this application, an adjustment component and a stop block were added to realize the automatic and periodic switching of the flipping plate during the reciprocating motion. This design ensures that the steel slag is alternately flipped to both sides, avoiding material accumulation and reaction dead zones caused by unidirectional flipping, and ensuring the uniformity of the steel slag material in the reaction zone in terms of heating, moisture and contact with carbon dioxide, thereby obtaining a final product with stable composition and uniform carbonization. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown; Figure 2 A cross-sectional view of the internal structure of the box according to an embodiment of the present invention is shown; Figure 3 A partial side view of the bottom structure according to an embodiment of the present invention is shown; Figure 4 A top cross-sectional view of the internal structure of the base according to an embodiment of the present invention is shown; Figure 5 A top cross-sectional view of the internal structure of the base according to an embodiment of the present invention is shown.

[0015] Legend: 1. Box body; 2. Conveyor belt assembly; 201. Rotary roller; 202. Motor; 203. Conveyor belt; 3. Tilting mechanism; 4. Feed pipe; 5. Water spray pipe; 6. Air inlet pipe; 7. Telescopic cylinder; 8. Base; 9. Tilting plate; 901. Rotating rod; 10. Baffle; 11. Limiting rod; 12. Adjusting assembly; 13. Stop block; 14. Collection box; 15. Synchronization assembly; 1501. Synchronization pulley; 1502. Synchronization belt; 16. Fixing rod; 17. Pulley; 18. Support rod; 19. Hook spring; 20. Stop bar; 21. Sleeve; 22. Slide bar; 23. Extrusion ball. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 and Figure 2This utility model provides a technical solution: a device for solidifying carbon dioxide through steel slag mineralization, comprising a box 1, a conveyor belt assembly 2 inside the box 1, a turning mechanism 3 on the conveyor belt assembly 2, a feeding pipe 4 at one end of the top of the box 1, the top end of the feeding pipe 4 being connected to the discharge port of an external steel slag crusher, so that the pre-treated steel slag can fall directly and continuously into the box 1 and be evenly spread on the conveyor belt assembly 2 to form an initial material layer, a water spray pipe 5 at the middle of the top of the box 1, which is connected to an external water supply system, and an atomizing nozzle at its bottom, used to evenly spray process water onto the steel slag material layer below, precisely adjusting its moisture content and providing the necessary liquid phase environment for the mineralization reaction, and an air inlet pipe 6 at the other end of the top of the box 1, which is connected to an external carbon dioxide gas source (such as a storage device or an industrial waste gas source) through pipelines and valves, responsible for introducing carbon dioxide-rich gas into the reaction zone inside the box 1 to fully contact the humidified steel slag.

[0018] Specifically, such as Figure 2 As shown, the conveyor belt assembly 2 includes a rotating roller 201, a motor 202, and a conveyor belt 203. The rotating roller 201 is rotatably installed at both ends inside the housing 1. The motor 202 is installed on the outside of the housing 1, and its output end is fixedly connected to one of the rotating rollers 201, thereby transmitting power into the housing 1. The outer sides of the two rotating rollers 201 are tensioned with the conveyor belt 203 to form a continuous bearing surface. The outlet sections of the feeding pipe 4, the water spray pipe 5, and the air inlet pipe 6 all extend into the housing 1 and are precisely located above the bearing section of the conveyor belt 203, thereby completing the processes of spreading material, humidifying, and introducing carbon dioxide in sequence. After the complete carbonization process, the processed steel slag moves to the end of the conveyor belt 203 and falls by gravity. To collect the final product, a collection box 14 that can be pulled out from one end of the box 1 is placed at the lower end of the box body 1. The top of the collection box 14 is open to catch the falling material. The bottom of the collection box 14 is preferably equipped with rollers or slide rails so that the entire collection box 14 can be easily pulled out from a special opening at one end of the box body 1, thereby realizing the uninterrupted collection and transportation of the finished product and ensuring the continuous operation capability of the device.

[0019] Specifically, such as Figure 2 As shown, the flipping mechanism 3 includes a telescopic cylinder 7 installed on one side of the housing 1. The telescopic cylinder 7 is preferably a servo electric push rod or a waterproof hydraulic cylinder, which is fixedly installed on the outer side wall of the housing 1. A sealing ring is provided between its output end and the housing 1. The output end of the telescopic cylinder 7 extends into the housing 1 and is connected to a base 8. Multiple flipping plates 9 are rotatably installed at the bottom of the base 8 and are distributed at equal intervals. In specific implementation, the flipping plates 9 are plow-shaped or strip-shaped with a certain angle of inclination, so as to cut into the steel slag material layer. To ensure the stability of the base 8 during reciprocating motion and to avoid deflection or jamming, limit rods 11 are installed on both sides inside the housing 1. The limit rods 11 are set through the base 8 to ensure that the linear driving force of the telescopic cylinder 7 is efficiently converted into stable and precise linear reciprocating motion of the base 8 and all the flipping plates 9. The reciprocating stroke is usually set to be slightly less than the width of the conveyor belt 203.

[0020] Specifically, such as Figure 2 and Figure 3 As shown, baffles 10 are installed on both sides of the base 8. The two ends of the baffles 10 are inclined towards the sides of the box 1. The baffles 10 serve to shield the sides of the steel slag, preventing the steel slag from falling from the sides when it is turned over. The inclined design of the two ends of the baffles 10 forms a physical barrier that converges towards the center. It can effectively guide and confine the steel slag turned over from the front and sides to the turning work area, fundamentally preventing the steel slag from falling from the sides of the conveyor belt 203 to the bottom of the equipment, ensuring a clean production environment and reducing raw material waste.

[0021] Specifically, such as Figure 4 As shown, a rotating rod 901 is installed on the top of the flip plate 9, and a synchronization assembly 15 connecting multiple rotating rods 901 is provided inside the base 8. The synchronization assembly 15 includes multiple synchronous pulleys 1501 and a synchronous belt 1502 sleeved on the outside of the multiple synchronous pulleys 1501. The multiple synchronous pulleys 1501 are fixedly installed on the outside of the multiple rotating rods 901. The rotation of the rotating rod 901 will drive the synchronous pulleys 1501 on it to rotate, and then transmit the rotational motion to all the other synchronous pulleys 1501 through the tensioned synchronous belt 1502. Finally, all the rotating rods 901 drive the flip plate 9 below them to achieve a completely synchronized angle change.

[0022] Specifically, such as Figure 5 As shown, the base 8 is equipped with an adjustment assembly 12 for adjusting the angle of the flip plate 9. The housing 1 is equipped with a stop block 13 that cooperates with the adjustment assembly 12. The adjustment assembly 12 includes a fixed rod 16, a lever 17, a stop bar 20 and a sleeve 21. The fixed rod 16 is rotatably mounted on the outside of one end of the rotating rod 901, and the lever 17 is fixedly mounted on the outside of one end of the rotating rod 901. Support rods 18 are installed on the top of the fixed rod 16 and the lever 17 at the end away from the rotating rod 901. The top of the support rod 18 of the fixed rod 16 is fixedly connected to the top of the inside of the base 8. The support rod 18 on the fixed rod 16 serves to fix the fixed rod 16 and provide a connection position for the hook spring 19, while the support rod 18 on the lever 17 only serves to provide a connection position for the hook spring 19. Hook springs 19 are fitted on the two support rods 18. The hook springs 19 play a limiting role to stabilize the angle after turning. The bottom of the base 8 is symmetrically equipped with stop bars 20. The stop bars 20 are located at both ends of the lever 17. The two stop bars 20 together form a mechanical limit range, which is used to precisely limit the maximum rotation angle of the lever 17 (i.e., the rotating rod 901 and all the flip plates 9) to prevent overtravel. A sleeve 21 is fitted onto the end of the lever 17. Slide rods 22 are installed at both ends of the sleeve 21. A compression ball 23 is installed at the end of the slide rod 22 that extends out of the base 8 and is in contact with the stop block 13. The compression ball 23 is made of rubber to reduce wear when in contact with the stop block 13.

[0023] In summary, the working principle of the carbon dioxide solidification device utilizing steel slag mineralization provided in this embodiment is as follows: When the device is started, the external steel slag crusher continuously feeds the pre-treated steel slag into the box 1 through the feeding pipe 4. During the falling process, the steel slag is evenly spread on the conveyor belt 203 running at a constant speed, forming an initial material layer with controllable thickness. The motor 202 drives the conveyor belt 203 through the drive roller 201 to transport the material layer to the subsequent work station at a constant speed. After the surface of the conveyor belt 203 carrying steel slag is covered, the motor 202 is stopped. At this time, the water spray pipe 5 sprays process water evenly onto the surface of the steel slag layer in the form of fine water mist through the atomizing nozzle at its bottom. The air inlet pipe 6 continuously introduces carbon dioxide-rich gas from an external air source into the box 1, so that it permeates above the steel slag layer. The turning mechanism 3 starts working under the drive of the telescopic cylinder 7. The telescopic cylinder 7 pushes the base 8 to make a stable linear reciprocating motion along the guide of the limit rod 11. Multiple turning plates 9 installed at the bottom of the base 8 move accordingly. Their plow-like structure can effectively cut into the steel slag material layer to achieve crushing and turning. When the base 8 moves to one end of its travel, the compression ball 23 on that side contacts the stop block 13 on the housing 1, and pushes the sleeve 21 to slide along the lever 17 via the slide rod 22. This linear motion is converted into a torque that forces the lever 17 to rotate. The rotation of the lever 17 drives the rotating rod 901 fixed to it to rotate. This rotational motion is transmitted to all the flipping plates 9 through the synchronization assembly 15, which consists of the synchronous pulley 1501 and the synchronous belt 1502, so that they change their tilt angle synchronously. The stop rod 20 ensures that the rotation angle is accurate, and the hook spring 19 provides the restoring force and keeps the angle stable. When the base 8 moves in the opposite direction, the adjustment assembly 12 on the other side acts with the stop block 13, so that the angle of the flipping plates 9 changes synchronously again, thereby realizing automatic bidirectional flipping in the reciprocating process and improving the carbon dioxide fixation efficiency. The steel slag that has completed the carbonization reaction moves to the end of the conveyor belt 203 and falls into the collection box 14 by gravity. When the collection box 14 is full, it can be easily pulled out from the box 1, realizing the uninterrupted collection and transportation of the finished product, thereby ensuring the continuous and industrialized operation of the entire device.

[0024] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for solidifying carbon dioxide using steel slag mineralization, comprising a housing (1), characterized in that, The box (1) is equipped with a conveyor belt assembly (2), the conveyor belt assembly (2) is equipped with a flipping mechanism (3), a feeding pipe (4) is provided at one end of the top of the box (1), a water spray pipe (5) is provided at the middle of the top of the box (1), and an air inlet pipe (6) is provided at the other end of the top of the box (1).

2. The device for solidifying carbon dioxide using steel slag mineralization according to claim 1, characterized in that, The flipping mechanism (3) includes a telescopic cylinder (7) installed on one side of the box (1). The output end of the telescopic cylinder (7) extends into the box (1) and is connected to a base (8). Multiple flipping plates (9) are rotatably installed at the bottom of the base (8) and are evenly distributed. An adjustment component (12) for adjusting the angle of the flipping plates (9) is provided inside the base (8). A stop block (13) that cooperates with the adjustment component (12) is installed inside the box (1).

3. The device for solidifying carbon dioxide using steel slag mineralization according to claim 2, characterized in that, The top of the flip plate (9) is equipped with a rotating rod (901), and the base (8) is also provided with a synchronization assembly (15) connecting multiple rotating rods (901). The synchronization assembly (15) includes multiple synchronous pulleys (1501) and a synchronous belt (1502) sleeved on the outside of the multiple synchronous pulleys (1501). The multiple synchronous pulleys (1501) are fixedly installed on the outside of the multiple rotating rods (901).

4. The device for solidifying carbon dioxide using steel slag mineralization according to claim 3, characterized in that, The adjustment assembly (12) includes a fixed rod (16), a lever (17), a stop bar (20), and a sleeve (21). The fixed rod (16) is rotatably mounted on the outside of one end of the rotating rod (901), and the lever (17) is fixedly mounted on the outside of one end of the rotating rod (901). Support rods (18) are installed on the top of the fixed rod (16) and the lever (17) at the end away from the rotating rod (901). Hook springs (19) are sleeved on the two support rods (18). The top of the support rod (18) of the fixed rod (16) is fixedly connected to the top of the inside of the base (8). The bottom of the inside of the base (8) is symmetrically equipped with a stop rod (20). The stop rod (20) is located at both ends of the lever (17). The end of the lever (17) is fitted with a sleeve (21). The two ends of the sleeve (21) are equipped with a slide rod (22). The end of the slide rod (22) extending out of the base (8) is equipped with a compression ball (23) that is in contact with the stop block (13).

5. The device for solidifying carbon dioxide using steel slag mineralization according to claim 4, characterized in that, Both sides of the base (8) are equipped with baffles (10), and the two ends of the baffles (10) are inclined toward the sides of the box (1).

6. The device for solidifying carbon dioxide using steel slag mineralization according to claim 1, characterized in that, The conveyor belt assembly (2) includes a rotating roller (201), a motor (202) and a conveyor belt (203). The rotating roller (201) is rotatably installed at both ends inside the housing (1). The motor (202) is installed on the outside of the housing (1) and its output end is fixedly connected to one of the rotating rollers (201). The outer sides of both rotating rollers (201) are tensioned with conveyor belts (203). A collection box (14) that can be pulled out from one end of the housing (1) is placed at the lower end inside the housing (1).

7. The device for solidifying carbon dioxide using steel slag mineralization according to claim 1, characterized in that, Limiting rods (11) are installed on both sides inside the box (1), and the limiting rods (11) pass through the base (8).

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