Thermal-state steel slag carbon sequestration equipment and use method thereof

Abstract

The invention discloses thermal-state steel slag carbon sequestration equipment and a using method thereof.The thermal-state steel slag carbon sequestration equipment comprises a furnace body and a steel slag box slidably arranged in the furnace body, the top face of the furnace body is fixedly connected with a sealing cover, a mounting plate is vertically and movably arranged in the sealing cover, and a stirring and dispersing mechanism is arranged on the surface of the mounting plate; the stirring and dispersing mechanism comprises a U-shaped frame arranged on the two sides of the interior of the mounting plate in a sliding mode, a connecting shaft is rotationally arranged between the two sides of the inner wall of the U-shaped frame and located on the bottom face of the mounting plate, a stirring wheel is fixedly arranged on the surface of the connecting shaft, and a first gear is fixedly connected to the surface of the connecting shaft. According to the thermal-state steel slag carbon sequestration equipment and the using method thereof, by arranging the stirring and dispersing mechanism, thermal-state steel slag in the steel slag box can be stirred, so that the steel slag and water are uniformly mixed, sufficient reaction of the steel slag and carbon dioxide gas is facilitated, and the steel slag fully absorbs carbon dioxide for carbon sequestration.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fixation equipment, and in particular to hot slag carbon fixation equipment and a use method thereof. Background Art

[0002] Hot slag carbon fixation equipment is an advanced technical equipment used for the integration of slag treatment and carbon dioxide (CO2) capture and fixation.

[0003] According to the patent application number CN202211271766.4, this method can efficiently industrially degrade the free calcium oxide content in carbon steel slag, promote the resource utilization of carbon steel slag, and solidify carbon dioxide at the same time; the present invention is adopted to realize carbonation of carbon steel slag by controlling production site conditions such as water flow rate, slag particle size, pressure, etc., to solve the problem that the performance of carbon steel slag as a building material raw material is unstable due to the small amount of free calcium oxide contained in it; this method effectively degrades the free calcium oxide content in carbon steel slag, stabilizes the performance of slag, promotes the resource utilization of carbon steel slag, and transforms carbon steel slag from solid waste into a new type of building material and highway construction raw material, which can be used to replace gravel and sand for construction and highways, and can reduce the transportation cost as solid waste, and generate considerable resource sales profit as a new type of building material and highway raw material;

[0004] In the above patent, water is mixed with hot steel slag and carbon dioxide gas is introduced for heat suffocation to achieve the purpose of carbon fixation. However, since the hot steel slag is placed statically in the device, the contact area between the steel slag, carbon dioxide gas and water is small and uneven, resulting in insufficient reaction between the steel slag and carbon dioxide, low utilization rate of the steel slag and insufficient carbon fixation. Therefore, in view of the above shortcomings, the present invention makes the following improvements. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a hot steel slag carbon fixation device and a method of using the same, which solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hot steel slag carbon fixation equipment, comprising a furnace body and a steel slag box slidably arranged inside the furnace body, the top surface of the furnace body is fixedly connected to a sealing cover, and a mounting plate is movably arranged inside the sealing cover, and a stirring and dispersing mechanism is arranged on the surface of the mounting plate;

[0007] The stirring and dispersing mechanism includes a U-shaped frame slidably arranged on both sides of the inside of the mounting plate, a connecting shaft is rotatably arranged between the two sides of the inner wall of the U-shaped frame and located on the bottom surface of the mounting plate, a stirring wheel is fixedly arranged on the surface of the connecting shaft, a first gear is fixedly connected to the surface of the connecting shaft, a second gear meshing with the first gear is rotatably arranged on the inner wall of the U-shaped frame through a fixed shaft, a toothed plate meshing with the second gear is fixedly arranged on the bottom surface of the mounting plate, and a control unit for driving the two U-shaped frames to move left and right is arranged on the top surface of the mounting plate.

[0008] Preferably, the control part includes a fixing frame fixedly arranged on the top surface of the mounting plate, and a first motor is fixedly connected to the inside of the fixing frame, one end of the output shaft of the first motor is fixedly connected to a driving gear through a coupling, threaded rods are rotatably arranged on both sides of the inner wall of the fixing frame, a connecting rod is fixedly connected between the opposite ends of the two threaded rods, and a passive gear meshing with the driving gear is fixedly arranged on the surface of the connecting rod, and the inside of the U-shaped frame is threadedly connected to the surface of the threaded rod.

[0009] Preferably, a baffle and a sealing plate are respectively provided on both sides of the slag box, and the slag box is rotatably arranged between the baffle and the sealing plate. A second motor is fixedly connected to one side of the sealing plate, and one end of the output shaft of the second motor is fixedly connected to one side of the slag box through a rotating rod.

[0010] Preferably, a support plate is fixedly provided on one side of the back side of the furnace body, and a pushing member for controlling the left and right movement of the furnace body is provided inside the support plate, the pushing member includes a threaded sleeve rotatably arranged inside the support plate through a connecting plate, and the internal thread of the threaded sleeve is connected to a screw rod, one side of the screw rod is fixedly connected to the top surface of the sealing plate through a vertical plate, and the other end of the screw rod is slidably connected to the top surface of the furnace body through a limiting plate.

[0011] Preferably, a third motor is fixedly provided on the top surface of the inner wall of the support plate, and one end of the output shaft of the third motor is fixedly connected to the first transmission gear through a connecting shaft, and the surface of the threaded sleeve is fixedly connected to the second transmission gear meshing with the first transmission gear.

[0012] Preferably, an air inlet pipe is provided on the top surface of the furnace body, and the bottom of the air inlet pipe surface is connected to the interior of the furnace body through a vertical pipe, and the front and back sides of the top of the mounting plate are connected to water inlet telescopic pipes that penetrate to the top surface of the sealing cover.

[0013] The present invention also discloses a method for using a hot slag carbon fixation device, which is characterized by comprising the following steps:

[0014] S1. Take 5kg of hot steel slag after roller crushing, spray 2L of water into it, and then introduce CO2 gas. The total hot stuffing time is 3h. During the hot stuffing process, monitor the changes in pressure and temperature of the pilot plant;

[0015] S2. Record the pressure and temperature every 10 minutes, analyze the particle size and free calcium oxide of the treated slag sample, and analyze the CO2 fixation in the slag by thermogravimetric analysis.

[0016] Beneficial Effects

[0017] The present invention provides a hot slag carbon fixation device and a method for using the same. Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The hot slag carbon fixation equipment and the use method thereof can stir the hot slag in the slag box by setting a stirring and dispersing mechanism, so that the slag and water are evenly mixed, and it is beneficial for the slag to fully react with carbon dioxide gas, so that the slag can fully absorb carbon dioxide to fix carbon.

[0019] (2) The hot slag carbon fixation equipment and the method of using the same can automatically push out the slag box after the slag carbon fixation operation is completed by setting a pushing member, without the need for manual pulling out by personnel, thereby reducing labor and safety hazards.

[0020] (3) The hot slag carbon fixation equipment and its use method control the rotation of the slag box so that the top surface is opened and rotated to the bottom surface, so that the slag inside the slag box can be discharged for collection, which is convenient for subsequent slag reprocessing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of the structure of the present invention;

[0022] Figure 2 is a cross-sectional view of the sealing cover structure of the present invention;

[0023] Figure 3 A bottom view of the mounting plate structure of the present invention;

[0024] Figure 4 For the present invention Figure 1 A partial enlarged view of point A in the middle.

[0025] In the figure: 1. furnace body; 2. slag box; 3. sealing cover; 4. mounting plate; 5. stirring and dispersing mechanism; 51. U-shaped frame; 52. stirring wheel; 53. first gear; 54. second gear; 55. toothed plate; 56. fixing frame; 57. first motor; 58. driving gear; 59. threaded rod; 510. passive gear; 6. sealing plate; 7. baffle; 8. second motor; 9. pushing member; 91. screw rod; 92. threaded sleeve; 93. limit plate; 94. third motor; 95. first transmission gear; 96. second transmission gear; 10. air inlet pipe; 11. water inlet telescopic pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] See also Figures 1 to 3 As shown, the present invention provides a technical solution, and the specific improvements are as follows:

[0029] A hot slag carbon fixation device comprises a furnace body 1 and a slag box 2 slidably arranged inside the furnace body 1, the top surface of the furnace body 1 is provided with an air inlet pipe 10, and the bottom of the surface of the air inlet pipe 10 is connected to the inside of the furnace body 1 through a vertical pipe, the front and back of the top of the mounting plate 4 are both connected with a water inlet telescopic pipe 11 penetrating to the top surface of the sealing cover 3, the inside of the air inlet pipe 10 and the water inlet telescopic pipe 11 are respectively provided with a first one-way valve and a second one-way valve, the top surface of the furnace body 1 is fixedly connected to the sealing cover 3, and the sealing cover 3 is provided with a mounting plate 4 which can be moved up and down inside, a hydraulic cylinder 12 is provided on both sides of the top surface of the sealing cover 3, and the protruding end of the hydraulic cylinder 12 is fixedly connected to the top surface of the fixing frame 56, and a stirring and dispersing mechanism 5 is provided on the surface of the mounting plate 4, and the stirring and dispersing mechanism 5 includes a U-shaped frame 51 which is slidably provided on both sides of the inside of the mounting plate 4, and a connecting shaft is rotatably provided between the two sides of the inner wall of the U-shaped frame 51 and located on the bottom surface of the mounting plate 4, and a sliding groove which is adapted to the U-shaped frame 51 is provided inside the mounting plate 4. A stirring wheel 52 is fixedly provided on the surface of the connecting shaft, a first gear 53 is fixedly connected to the surface of the connecting shaft, a second gear 54 meshing with the first gear 53 is rotatably provided on the inner wall of the U-shaped frame 51 through a fixed shaft, a toothed plate 55 meshing with the second gear 54 is fixedly provided on the bottom surface of the mounting plate 4, a control unit for driving the two U-shaped frames 51 to move left and right is provided on the top surface of the mounting plate 4, the control unit includes a fixing frame 56 fixedly provided on the top surface of the mounting plate 4, and a first motor 57 is fixedly connected inside the fixing frame 56, one end of the output shaft of the first motor 57 is fixedly connected to a driving gear 58 through a coupling, threaded rods 59 are rotatably provided on both sides of the inner wall of the fixing frame 56, the threads on the surfaces of the two threaded rods 59 are in opposite directions, a connecting rod is fixedly connected between the opposite ends of the two threaded rods 59, and a passive gear 510 meshing with the driving gear 58 is fixedly provided on the surface of the connecting rod, and the inside of the U-shaped frame 51 is threadedly connected to the surface of the threaded rod 59;

[0030] Put the hot slag into the slag box 2, control the slag box 2 to move to the inside of the furnace body 1, inject a certain amount of water into the slag box 2 through the water inlet telescopic pipe 11, and then introduce carbon dioxide through the air inlet pipe 10. After the water and carbon dioxide are introduced, start the hydraulic cylinder 12 so that the extended end of the hydraulic cylinder 12 drives the fixed frame 56 to move downward, so that the stirring wheel 52 extends into the slag box 2;

[0031] Start the first motor 57, so that the first motor 57 drives the connecting rod to rotate through the active gear 58 and the passive gear 510. At this time, the two threaded rods 59 rotate synchronously. Since the thread directions of the two threaded rods 59 are opposite, the two U-shaped frames 51 can be driven to move relative to or away from each other. In the process of the U-shaped frame 51 moving along the slide groove, the second gear 54 on the fixed shaft rotates along the surface of the toothed plate 55. At the same time, the first gear 53 can drive the connecting shaft to rotate synchronously, thereby realizing the rotation of the stirring wheel 52. The stirring wheel 52 moves while stirring inside the slag box 2, thereby realizing the full mixing of the hot slag and water, and facilitating the full reaction of the slag and carbon dioxide.

[0032] Embodiment 2

[0033] Based on Example 1, please refer to Figure 1 The specific improvements are as follows:

[0034] The two sides of the slag box 2 are respectively provided with a baffle plate 7 and a sealing plate 6, the front of the sealing plate 6 is slidably arranged with the front of the furnace body 1 through a U-shaped plate, the slag box 2 is rotatably arranged between the baffle plate 7 and the two sides of the sealing plate 6, one side of the sealing plate 6 is fixedly connected with a second motor 8, and one end of the output shaft of the second motor 8 is fixedly connected with one side of the slag box 2 through a rotating rod, and a collecting frame 13 is movably arranged on the top surface of the slag box 2, and the collecting frame 13 is supported by a bottom moving platform;

[0035] The second motor 8 is started to drive the slag box 2 to rotate, so that the top surface of the slag box 2 is opened and rotated to the bottom surface, so that the slag inside the slag box 2 is poured into the collection frame 13 for collection, which is convenient for subsequent slag reprocessing.

[0036] Embodiment 3

[0037] Based on Example 2, please refer to Figure 1 and Figure 4 The specific improvements are as follows:

[0038] A support plate is fixedly provided on one side of the back side of the furnace body 1, and a pusher 9 for controlling the left and right movement of the furnace body 1 is provided inside the support plate, and the pusher 9 includes a threaded sleeve 92 rotatably provided inside the support plate through a connecting plate, and the internal thread of the threaded sleeve 92 is connected with a screw rod 91, one side of the screw rod 91 is fixedly connected to the top surface of the sealing plate 6 through a vertical plate, and the other end of the screw rod 91 is slidably connected to the top surface of the furnace body 1 through a limit plate 93, a third motor 94 is fixedly provided on the top surface of the inner wall of the support plate, and one end of the output shaft of the third motor 94 is fixedly connected to a first transmission gear 95 through a connecting shaft, and a second transmission gear 96 meshing with the first transmission gear 95 is fixedly connected to the surface of the threaded sleeve 92;

[0039] After the hot slag is heated and stuffed, the third motor 94 is started, so that the third motor 94 drives the threaded sleeve 92 to rotate through the first transmission gear 95 and the second transmission gear 96. When the threaded sleeve 92 rotates, it can drive the internal screw rod 91 to move. The right end of the screw rod 91 drives the sealing plate 6 to continuously move to the right through the vertical plate, so that the slag box 2 can be slid out from the inside of the furnace body 1, which is convenient for the subsequent processing of the slag inside the slag box 2.

[0040] Embodiment 4

[0041] See also Figures 1 to 4 As shown, the present invention also discloses a method for using a hot slag carbon fixation device, which specifically comprises the following steps:

[0042] S1. Take 5kg of hot slag after roller crushing, spray 2L of water (set the spraying time to 1h), use a CO2 / H2O mass ratio of 0.1, that is, introduce 0.2kg of CO2 gas, and calculate the total volume of CO2 to be 100.2L (CO2 density under standard state is 1.997g / L) according to the formula, flow into the furnace body 1 at 5L / min, the total introduction time is 20min, the total hot stuffy time is 3h, and the changes in pressure and temperature of the pilot plant are monitored during the hot stuffy process;

[0043] S2. Record the pressure and temperature every 10 minutes, analyze the particle size and free calcium oxide of the treated slag sample, and analyze the CO2 fixation in the slag by thermogravimetric analysis.

[0044] Embodiment 5

[0045] See also Figures 1 to 4 As shown, the present invention also discloses a method for using a hot slag carbon fixation device, which specifically comprises the following steps:

[0046] S1. Take 5kg of hot slag after roller crushing, spray 2L of water (set the spraying time to 1h), use a CO2 / H2O mass ratio of 0.25, that is, introduce 0.5kg of CO2 gas, and calculate the total volume of CO2 to be 250.4L (CO2 density is 1.997g / L under standard conditions) according to the formula, flow into the furnace body 1 at 5L / min, the total introduction time is 50min, the total hot stuffy time is 3h, and the changes in pressure and temperature of the pilot plant are monitored during the hot stuffy process;

[0047] S2. Record the pressure and temperature every 10 minutes, analyze the particle size and free calcium oxide of the treated slag sample, and analyze the CO2 fixation in the slag by thermogravimetric analysis.

[0048] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot steel slag carbon fixation device, comprising a furnace body (1) and a steel slag box (2) slidably arranged inside the furnace body (1), characterized in that: A sealing cover (3) is fixedly connected to the top surface of the furnace body (1), and a mounting plate (4) is movably arranged up and down inside the sealing cover (3), and a stirring and dispersing mechanism (5) is arranged on the surface of the mounting plate (4); The stirring and dispersing mechanism (5) comprises a U-shaped frame (51) slidably arranged on both sides of the interior of the mounting plate (4); a connecting shaft is rotatably arranged between the two sides of the inner wall of the U-shaped frame (51) and located on the bottom surface of the mounting plate (4); a stirring wheel (52) is fixedly arranged on the surface of the connecting shaft; a first gear (53) is fixedly connected to the surface of the connecting shaft; a second gear (54) meshing with the first gear (53) is rotatably arranged on the inner wall of the U-shaped frame (51) via a fixed shaft; a toothed plate (55) meshing with the second gear (54) is fixedly arranged on the bottom surface of the mounting plate (4); and a control unit for driving the two U-shaped frames (51) to move left and right is arranged on the top surface of the mounting plate (4).

2. The hot steel slag carbon fixation equipment according to claim 1, characterized in that: The control unit comprises a fixing frame (56) fixedly arranged on the top surface of the mounting plate (4), and a first motor (57) is fixedly connected inside the fixing frame (56), one end of the output shaft of the first motor (57) is fixedly connected to a driving gear (58) via a coupling, threaded rods (59) are rotatably arranged on both sides of the inner wall of the fixing frame (56), a connecting rod is fixedly connected between opposite ends of the two threaded rods (59), and a passive gear (510) meshing with the driving gear (58) is fixedly arranged on the surface of the connecting rod, and the inside of the U-shaped frame (51) is threadedly connected to the surface of the threaded rod (59).

3. The hot steel slag carbon fixation equipment according to claim 1, characterized in that: A baffle plate (7) and a sealing plate (6) are respectively provided on both sides of the slag box (2); the slag box (2) is rotatably arranged between the baffle plate (7) and the sealing plate (6); a second motor (8) is fixedly connected to one side of the sealing plate (6); and one end of an output shaft of the second motor (8) is fixedly connected to one side of the slag box (2) via a rotating rod.

4. The hot steel slag carbon fixation equipment according to claim 1, characterized in that: A support plate is fixedly provided on one side of the back side of the furnace body (1), and a pusher (9) for controlling the left and right movement of the furnace body (1) is provided inside the support plate, the pusher (9) comprising a threaded sleeve (92) rotatably provided inside the support plate via a connecting plate, and a screw rod (91) is connected to the internal thread of the threaded sleeve (92), one side of the screw rod (91) is fixedly connected to the top surface of the sealing plate (6) via a vertical plate, and the other end of the screw rod (91) is slidably connected to the top surface of the furnace body (1) via a limiting plate (93).

5. The hot steel slag carbon fixation equipment according to claim 4, characterized in that: A third motor (94) is fixedly arranged on the top surface of the inner wall of the support plate, and one end of the output shaft of the third motor (94) is fixedly connected to a first transmission gear (95) via a connecting shaft, and a second transmission gear (96) meshing with the first transmission gear (95) is fixedly connected to the surface of the threaded sleeve (92).

6. The hot steel slag carbon fixation equipment according to claim 1, characterized in that: An air inlet pipe (10) is provided on the top surface of the furnace body (1), and the bottom of the surface of the air inlet pipe (10) is connected to the interior of the furnace body (1) via a vertical pipe, and the front and back sides of the top of the mounting plate (4) are both connected to a water inlet telescopic pipe (11) that penetrates to the top surface of the sealing cover (3).

7. A method for using a hot slag carbon fixation device, characterized in that: The specific steps include: S1. Take 5kg of hot steel slag after roller crushing, spray 2L of water into it, and then introduce CO2 gas. The total hot stuffing time is 3h. During the hot stuffing process, monitor the changes in pressure and temperature of the pilot plant; S2. Record the pressure and temperature every 10 minutes, analyze the particle size and free calcium oxide of the treated slag sample, and analyze the CO2 fixation in the slag by thermogravimetric analysis.

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