Carbon capture and storage process for comprehensively utilizing alkaline solid waste

Abstract

The invention discloses a carbon capture and storage process for comprehensively utilizing alkaline solid waste, and relates to the field of carbon dioxide capture, a reaction tower and a slurry pump are included, a carbon dioxide concentration meter is installed at a gas outlet pipe at the top of the reaction tower, and a slurry alkaline concentration meter is fixedly installed on a slurry discharging pipe at the bottom of the reaction tower; the bottom layer feeding hole of the reaction tower is communicated with a pulping mechanism which is used for dynamically changing and adjusting the concentration of prepared alkaline slurry according to the carbon dioxide concentration of gas discharged from the reaction tower and the alkaline concentration of residual slurry. Meanwhile, the carbon dioxide in the waste gas after reaction and the alkaline concentration in the slurry after reaction are monitored in real time, the alkaline concentration of the slurry prepared in the slurry making mechanism is dynamically adjusted in real time according to monitoring data of the carbon dioxide and the alkaline concentration, the optimal alkaline concentration of the slurry is constantly guaranteed, and the carbon dioxide is absorbed and mineralized by alkaline solid waste; and carbon dioxide is completely absorbed and fully utilized.

Description

Technical Field

[0001] The present invention relates to the field of carbon dioxide capture, and in particular to a carbon capture and storage process that comprehensively utilizes alkaline solid waste. Background Art

[0002] Carbon fixation and alkalinity reduction reaction refers to the process of fixing carbon dioxide through chemical reactions in industrial or natural processes, while reducing the alkalinity of the solution. This type of reaction usually involves acid-base neutralization reactions and the formation of carbonates or bicarbonates. It is a means of reducing the concentration of carbon dioxide in the atmosphere, lowering the pH value, and improving environmental quality. Especially in some cement production plants, a large amount of alkaline solid waste is generated during the production process, such as steel slag, fly ash, etc. In order to reduce greenhouse gas emissions and effectively utilize these waste resources, the alkaline solid waste is prepared into slurry to absorb the carbon dioxide in the exhaust gas for utilization. We found that in traditional processes, factories often consider cost-effectiveness and reaction efficiency. Now we find that in some factories, due to excessive pursuit of carbon dioxide absorption efficiency, they often use high-concentration alkaline slurry to absorb carbon dioxide in the exhaust gas at one time. Although a large amount of carbon dioxide can be absorbed at one time, the residual amount of carbon dioxide is still relatively large, and the pH value in the alkaline slurry is also high at this time, which will still produce waste that affects the environment, and the treatment of these wastes is relatively troublesome. Summary of the invention

[0003] The purpose of the present invention is to provide a carbon capture and storage process for comprehensive utilization of alkaline solid waste, which can realize the use of alkaline solid waste to absorb mineralized carbon dioxide, completely absorb and fully utilize carbon dioxide, and at the same time maximize the reduction of slurry pollution after the reaction, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a carbon capture and storage process for comprehensive utilization of alkaline solid waste, comprising a reaction tower and a slurry pump, a carbon dioxide concentration meter is installed at the top outlet pipe of the reaction tower, a slurry alkalinity concentration meter is fixedly installed on the slurry discharge pipe at the bottom of the reaction tower, the slurry discharge pipe at the bottom of the reaction tower is connected to the slurry pump, the slurry pump is connected to the slurry feed port at the top layer of the reaction tower, and the bottom layer feed port of the reaction tower is connected to a pulping mechanism for dynamically adjusting the concentration of alkaline slurry according to the carbon dioxide concentration of the exhaust gas in the reaction tower and the alkalinity concentration of the residual slurry.

[0005] Preferably, the pulping mechanism comprises a stirring cylinder, an upper end surface of the stirring cylinder is fixedly mounted with a water inlet pipe, the water inlet pipe is communicated with the inner cavity of the stirring cylinder, a water control valve group is installed on the water inlet pipe, a connecting piece is fixedly mounted on the upper end surface of the stirring cylinder, a body is arranged on the connecting piece, the bottom of the inner cavity of the body is fixedly communicated with the connecting piece at the discharge port, two baffle plates are rotatably mounted on the left side wall of the inner cavity of the body, the two baffle plates are arranged in a "V" shape, a weighing plate is respectively installed at the bottom position of each baffle plate, a control power module is fixedly mounted on the left end surface of the body, the rotating shaft on the baffle plate is power-connected to the control power module, the control power module controls the opening and closing of the two baffle plates, the weight sensor on the weighing plate is electrically connected to the control power module, and a stirring assembly for mixing alkaline solid waste is arranged in the inner cavity of the stirring cylinder.

[0006] Preferably, the stirring assembly includes a motor fixedly mounted on the upper end surface of the base, the output end of the motor is fixedly connected to a power shaft, the power shaft extends downward and penetrates into the inner cavity of the stirring cylinder, a stirring ring body is fixedly mounted on the power shaft, upper stirring rods are equidistantly mounted on the extension portion, a chassis portion is fixedly mounted on the bottom end of the power shaft, columns are equidistantly mounted on the bottom of the chassis portion, and the bottom ends of the columns are fixedly connected to a bottom ring body.

[0007] Preferably, L-shaped stirring parts corresponding to the upper stirring rod are evenly distributed and installed on the outer ring edge of the bottom ring body, and a winding rod is connected between the L-shaped stirring parts at the left and right ends and the upper stirring rod.

[0008] Preferably, two crushing rollers are installed in the inner cavity of the body so as to rotate symmetrically front and back about the center line of the body, a crushing power module is fixedly installed on the right end face of the body, the rotating shafts of the crushing rollers are fixedly connected to the power end of the crushing power module, and a funnel is fixedly installed on the upper end face of the body, and the discharge port at the bottom of the funnel is opposite to the middle position of the two crushing rollers.

[0009] Preferably, a slurry pipe is fixedly connected to the bottom discharge port of the stirring cylinder, and the slurry pipe is connected to the bottom feed port of the reaction tower.

[0010] Preferably, a base is fixedly mounted on the mixing cylinder, a supporting steel frame is fixedly mounted on the bottom of the base, an extension portion is provided on the right end face of the base, and a support plate is fixedly mounted between the extension portion and the machine body.

[0011] Preferably, the residual slurry alkaline concentration data detected in the slurry alkaline concentration meter and the carbon dioxide concentration data detected in the carbon dioxide concentration meter are transmitted to the main control system end. When the carbon dioxide concentration rises and the residual slurry alkaline concentration decreases gently, the main control system end issues a first instruction, and the water control valve group receives the instruction to gradually reduce the drainage volume until the carbon dioxide concentration fluctuates within a safe range.

[0012] Preferably, when the carbon dioxide concentration drops stepwise and the alkaline concentration of the residual slurry increases, the main control system sends out a command, and the control power module receives the command to gradually reduce the amount of alkaline solid waste entering the inner cavity of the mixing tank until the carbon dioxide concentration fluctuates within a safe range.

[0013] Preferably, the safety range of carbon dioxide concentration is provided in several groups, each group of safety range of carbon dioxide concentration corresponds to the number of carbon dioxide cycle absorption, and each group of safety range of carbon dioxide concentration is reduced by 20%-30% compared with the previous group.

[0014] In summary, the beneficial effects of the present invention are: The present invention absorbs the carbon dioxide in the waste gas in multiple cycles, and monitors the carbon dioxide in the waste gas after the reaction and the alkaline concentration in the slurry after the reaction in real time. The alkaline concentration of the slurry prepared in the pulping mechanism is dynamically adjusted in real time according to the monitoring data of the two, so as to ensure the optimal alkaline concentration of the slurry at all times, so as to avoid the alkaline concentration in the slurry being too high after the reaction with the waste gas is completed, which leads to troubles in subsequent treatment, and also avoids the alkaline concentration in the slurry being too low, which leads to incomplete absorption of carbon dioxide, so as to absorb the carbon dioxide in the waste gas with the highest efficiency, and at the same time, there can be minimum residue of alkaline substances in the generated waste slurry, so as to realize the absorption of mineralized carbon dioxide by alkaline solid waste, and fully absorb and fully utilize the carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the overall process framework structure of a carbon capture and storage process for comprehensive utilization of alkaline solid wastes according to the present invention; Figure 2 This is a schematic diagram of the structure of a pulping mechanism in a carbon capture and storage process for comprehensive utilization of alkaline solid wastes according to the present invention; Figure 3It is a schematic diagram of the main and cross-sectional structure of a pulping mechanism in a carbon capture and storage process for comprehensive utilization of alkaline solid wastes according to the present invention; Figure 4 It is a right view structural schematic diagram of a baffle plate of a pulping mechanism in a carbon capture and storage process for comprehensive utilization of alkaline solid waste according to the present invention; Figure 5 This is a schematic diagram of the process framework of control sensing in a carbon capture and storage process for comprehensive utilization of alkaline solid waste in the present invention.

[0017] The symbols in the accompanying drawings are described as follows: base 10; supporting steel frame 11; slurry pipe 12; extension part 13; support plate 14; mixing cylinder 15; water inlet pipe 16; water control valve group 17; motor 18; connecting piece 19; control power module 20; machine body 21; crushing roller 22; funnel 23; crushing power module 24; material baffle plate 25; weighing plate 26; power shaft 27; stirring ring body 31; upper stirring rod 32; winding rod 33; L-shaped stirring part 34; bottom ring body 35; column 36; chassis part 37; reaction tower 40; slurry alkaline concentration meter 41; carbon dioxide concentration meter 42. DETAILED DESCRIPTION

[0018] The present invention will now be further described in detail in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic way, and therefore they only show the structures related to the present invention.

[0019] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0021] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0022] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of at least two elements or the interaction relationship between at least two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Combine the following Figure 1-Figure 5 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front, and back directions mentioned below are the same as Figure 1 The view direction is consistent in front, back, left, right, up and down directions. Figure 1 is a front view of the device of the present invention, Figure 1 The directions shown are consistent with the front, back, left, right, up and down directions of the device of the present invention when viewed from the front.

[0024] See also Figure 1-Figure 5 , an embodiment provided by the present invention: a large amount of alkaline solid wastes, such as steel slag, fly ash, etc., are generated during the production process of cement production plants. These wastes contain rich metal oxides such as calcium and magnesium, which can react with carbon dioxide to form stable carbonates. In order to reduce greenhouse gas emissions and effectively utilize these waste resources, slurry is prepared by using alkaline solid wastes to absorb carbon dioxide in waste gas; Specifically, it is a carbon capture and storage process for comprehensive utilization of alkaline solid waste, including a reaction tower 40 and a slurry pump. A carbon dioxide concentration meter 42 is installed at the top outlet pipe of the reaction tower 40 to detect the concentration of carbon dioxide in the discharged gas at all times. A slurry alkaline concentration meter 41 is fixedly installed on the slurry discharge pipe at the bottom of the reaction tower 40 to detect the alkaline concentration data in the slurry after the reaction at all times. The slurry discharge pipe at the bottom of the reaction tower 40 is connected to the slurry pump, and the slurry pump is connected to the slurry feed port on the top floor of the reaction tower 40. The bottom feed port of the reaction tower 40 is connected to a pulping mechanism for dynamically adjusting the concentration of alkaline slurry according to the carbon dioxide concentration of the discharged gas in the reaction tower 40 and the alkaline concentration of the residual slurry; First, alkaline solid waste is output to the bottom feed port of the reaction tower 40 through the pulping mechanism, and the slurry is transported to the top feed port of the reaction tower 40 through the slurry pump, and descends layer by layer through the reaction tower plate inside the reaction tower 40 to the bottom of the reaction tower 40, while the waste gas containing carbon dioxide is introduced from the bottom of the reaction tower 40, and the waste gas reacts and absorbs with the slurry on the reaction tower plate from bottom to top, and is finally discharged from the top of the tower after water vapor separation, and the carbon dioxide concentration meter 42 is used to detect the carbon dioxide concentration in the discharged waste gas, and the slurry alkaline concentration meter 41 is used at the bottom of the reaction tower 40 to detect the alkaline concentration data in the slurry after the reaction, and the detected carbon dioxide concentration data and alkaline concentration data are transmitted to the main control system end, and the main control system end dynamically adjusts the pulping mechanism according to the data of the two to prepare the alkaline slurry concentration, It is worth mentioning that, in the present embodiment, the pulping mechanism comprises a mixing cylinder 15, on which a base 10 is fixedly mounted, a support steel frame 11 is fixedly mounted at the bottom of the base 10 as a main support, an extension portion 13 is provided on the right end face of the base 10, a water inlet pipe 16 is fixedly mounted on the upper end face of the mixing cylinder 15, the water inlet pipe 16 is communicated with the inner cavity of the mixing cylinder 15, a water control valve group 17 is mounted on the water inlet pipe 16, and a flow sensor on the water control valve group 17 is connected to the main control system The ends are electrically connected, a connecting piece 19 is fixedly installed on the upper end surface of the mixing cylinder 15, and an organic body 21 is arranged on the connecting piece 19, a support plate 14 is fixedly installed between the extension portion 13 and the organic body 21, and the bottom of the inner cavity of the organic body 21 is fixedly connected with the connecting piece 19 at the discharge port, and two baffle plates 25 are rotatably installed on the left side wall of the inner cavity of the organic body 21, and the two baffle plates 25 are arranged in a "V" shape, and a weighing plate 26 is respectively installed at the bottom position of each baffle plate 25, and the organic body 2 1 is fixedly mounted with a control power module 20, the control power module 20 is electrically connected to the main control system end, the rotating shaft on the baffle plate 25 is electrically connected to the control power module 20, the control power module 20 controls the opening and closing of the two baffle plates 25, the weight sensor on the weighing plate 26 is electrically connected to the control power module 20, the inner cavity of the mixing cylinder 15 is provided with a stirring component for mixing alkaline solid waste, the inner cavity of the body 21 is connected to the body 21 Two crushing rollers 22 are installed to rotate symmetrically forward and backward about the center line of the body 21, a crushing power module 24 is fixedly installed on the right end surface of the body 21, and the rotating shafts of the crushing rollers 22 are fixedly connected to the power end of the crushing power module 24. A funnel 23 is fixedly installed on the upper end surface of the body 21, and the discharge port at the bottom of the funnel 23 is directly facing the middle position of the two crushing rollers 22. The bottom discharge port of the mixing cylinder 15 is fixedly connected to a slurry pipe 12, and the slurry pipe 12 is connected to the bottom feed port of the reaction tower 40; The alkaline solid waste can be fed into the funnel 23 through a screw conveyor, and then the funnel 23 falls into the two machine bodies 21. At this time, the crushing power module 24 drives the machine body 21 to rotate, and the two machine bodies 21 crush the alkaline solid waste, which is convenient for the preparation of slurry. The crushed alkaline solid waste will fall on the V-surface formed by the two baffle plates 25. The weighing plate 26 will always record the weight of the alkaline solid waste. The control power module 20 will drive the two baffle plates 25 to open only after receiving the instruction from the main control system. The main control system will select the appropriate slurry alkaline concentration according to the concentration of carbon dioxide. After the alkaline concentration of the slurry is determined, the electrical signals of the amount of alkaline solid waste and the amount of water at this concentration will be sent to the control power module 20 and the water control valve group 17 respectively. After the control power module 20 receives the corresponding instructions, when the weight data on the weighing plate 26 reaches the corresponding amount of alkaline solid waste, the control power module 20 drives the two baffle plates 25 to open, so that the alkaline solid waste falls into the inner cavity of the mixing tank 15, and the water control valve group 17 controls the corresponding water intake, so as to ensure the alkaline concentration of the slurry. After the water and the alkaline solid waste enter the inner cavity of the mixing tank 15, the slurry is prepared by the stirring component.

[0025] It should be noted that in order to ensure that there is no excessive loss of alkaline solid waste after it is prepared into slurry, in this embodiment, the stirring assembly includes a motor 18 fixedly mounted on the upper end surface of the base 10, and the output end of the motor 18 is fixedly connected to a power shaft 27, and the power shaft 27 extends downward and penetrates into the inner cavity of the stirring cylinder 15, and a stirring ring body 31 is fixedly mounted on the power shaft 27, and upper stirring rods 32 are evenly distributed on the extension portion 13, and a chassis portion 37 is fixedly mounted on the bottom end of the power shaft 27, and columns 36 are evenly distributed at the bottom of the chassis portion 37, and the bottom end of the column 36 is fixedly connected to a bottom ring body 35, and the outer ring edge of the bottom ring body 35 is fixedly mounted on the bottom end of the power shaft 27. L-shaped stirring parts 34 are installed at equidistant positions corresponding to the upper stirring rod 32, and a winding rod 33 is connected between the L-shaped stirring parts 34 and the upper stirring rod 32 at the left and right ends. The upper stirring rod 32 is used for stirring at the upper side, the L-shaped stirring part 34 is used for stirring at the bottom, and the winding rod 33 surrounding the power shaft 27 is used for stirring in the middle. The upper, middle and lower parts stir and mix the slurry, which can greatly improve the efficiency of slurry making while ensuring the solubility of the solute in the slurry. In addition, the discharge port at the bottom of the mixing cylinder 15 is surrounded by columns 36 and rotated at the same time, so that when the slurry is discharged through the slurry pipe 12, some relatively viscous slurries can be effectively prevented from being blocked at the discharge port, thereby affecting the discharge efficiency.

[0026] It should be noted that for the absorption of carbon dioxide in the exhaust gas, the cost-effectiveness and reaction efficiency are often taken into consideration in the factory. Now we find that in some factories, due to excessive pursuit of carbon dioxide absorption efficiency, they often use high-concentration alkaline slurry to absorb the carbon dioxide in the exhaust gas at one time. Although a large amount of carbon dioxide can be absorbed at one time, the residual amount of carbon dioxide is still relatively large, and the pH value in the alkaline slurry is also high at this time, which still produces waste that affects the environment, and the treatment of these wastes is relatively troublesome; Therefore, in this embodiment, the carbon dioxide in the exhaust gas is absorbed by multiple cycles. The safe range of the carbon dioxide concentration in each cycle is reduced by 20%-30% compared with the previous cycle. Therefore, the number of cycles is selected to be four. Therefore, the carbon dioxide concentration that needs to be reduced in each cycle is controlled to be 25%. The specific steps of each cycle are as follows: Step 1: Detect the carbon dioxide concentration of the exhaust gas to be absorbed by carbon dioxide, and input the detected carbon dioxide concentration into the main control system. Therefore, the main control system selects a slurry with a carbon dioxide concentration reduced by 25%; Step 2: The main control system selects the slurry with a carbon dioxide concentration reduced by 25%, and sends corresponding instructions to the control power module 20 and the water control valve group 17. The slurry is prepared in the slurry making mechanism and input into the reaction tower 40, and the exhaust gas is also introduced into the reaction tower 40 at the same time. The exhaust gas reacts and absorbs with the slurry on the reaction tower plate from bottom to top, and finally is discharged from the top of the tower into the transfer circulation gas tank after water vapor separation, ready for the next cycle; Step 3: The residual slurry alkaline concentration data detected in the slurry alkaline concentration meter 41 and the carbon dioxide concentration data detected in the carbon dioxide concentration meter 42 are transmitted to the main control system end in real time. When the carbon dioxide concentration rises and the residual slurry alkaline concentration decreases gently, the main control system end sends a first instruction, and the water control valve group 17 receives the instruction to gradually reduce the drainage volume, thereby raising the alkaline concentration in the replenished slurry, so that the residual slurry is mixed with the replenished slurry, and then the carbon dioxide in the exhaust gas is absorbed until the carbon dioxide concentration data detected in the carbon dioxide concentration meter 42 fluctuates within a 25% decrease range; When the carbon dioxide concentration drops step-wise and the alkaline concentration of the residual slurry increases, it indicates that the slurry concentration is too high. The main control system sends out an instruction, and the control power module 20 receives the instruction to gradually reduce the amount of alkaline solid waste entering the inner cavity of the mixing tank 15 to reduce the alkaline concentration in the slurry until the carbon dioxide concentration data detected in the carbon dioxide concentration meter 42 fluctuates within a 25% decrease range.

[0027] In summary, the present invention adopts multiple cycles of absorption of carbon dioxide in the exhaust gas, and simultaneously monitors the carbon dioxide in the exhaust gas after the reaction and the alkaline concentration in the slurry after the reaction in real time, and dynamically adjusts the alkaline concentration of the slurry prepared in the pulping mechanism in real time according to the monitoring data of the two, so as to ensure the optimal alkaline concentration of the slurry at all times, so as to avoid the alkaline concentration in the slurry being too high after the reaction with the exhaust gas is completed, which leads to troubles in subsequent treatment, and at the same time, it can also avoid the alkaline concentration in the slurry being too low, which leads to incomplete absorption of carbon dioxide, thereby absorbing carbon dioxide in the exhaust gas with the highest efficiency, and at the same time, there can be minimal residue of alkaline substances in the generated waste slurry, so as to realize the use of alkaline solid waste to absorb mineralized carbon dioxide, and fully absorb and fully utilize carbon dioxide.

[0028] The above is only a specific implementation of the invention, but the protection scope of the invention is not limited to it. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the invention. Therefore, the protection scope of the invention should be based on the protection scope defined in the claims.

Claims

1. A carbon capture and storage process for comprehensive utilization of alkaline solid waste, comprising a reaction tower (40) and a slurry pump, characterized in that: A carbon dioxide concentration meter (42) is installed at the top outlet pipe of the reaction tower (40), a slurry alkaline concentration meter (41) is fixedly installed on the slurry discharge pipe at the bottom of the reaction tower (40), the slurry discharge pipe at the bottom of the reaction tower (40) is connected to the slurry pump, the slurry pump is connected to the slurry feed port at the top layer of the reaction tower (40), and the bottom layer feed port of the reaction tower (40) is connected to a pulping mechanism for dynamically adjusting the concentration of alkaline slurry according to the carbon dioxide concentration of the exhaust gas in the reaction tower (40) and the alkaline concentration of the residual slurry.

2. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 1, characterized in that: The pulping mechanism comprises a stirring cylinder (15), a water inlet pipe (16) is fixedly mounted on the upper end surface of the stirring cylinder (15), the water inlet pipe (16) is in communication with the inner cavity of the stirring cylinder (15), a water control valve group (17) is mounted on the water inlet pipe (16), a connecting piece (19) is fixedly mounted on the upper end surface of the stirring cylinder (15), a body (21) is arranged on the connecting piece (19), the bottom of the inner cavity of the body (21) is fixedly connected with the connecting piece (19) at the discharge port, two baffle plates (25) are rotatably mounted on the left side wall of the inner cavity of the body (21), and the two baffle plates (25) are rotatably mounted on the left side wall of the inner cavity of the body (21). The baffle plates (25) are arranged in a "V" shape, and a weighing plate (26) is installed at the bottom of each baffle plate (25). A control power module (20) is fixedly installed on the left end surface of the body (21). The rotating shaft on the baffle plate (25) is connected to the control power module (20) in a power connection. The control power module (20) controls the opening and closing of the two baffle plates (25). The weight sensor on the weighing plate (26) is electrically connected to the control power module (20). A stirring component for mixing alkaline solid waste is arranged in the inner cavity of the stirring cylinder (15).

3. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 2, characterized in that: The stirring assembly comprises a motor (18) fixedly mounted on the upper end surface of the base (10); the output end of the motor (18) is fixedly connected to a power shaft (27); the power shaft (27) extends downward and penetrates into the inner cavity of the stirring cylinder (15); a stirring ring body (31) is fixedly mounted on the power shaft (27); upper stirring rods (32) are evenly spacedly mounted on the extension portion (13); a chassis portion (37) is fixedly mounted on the bottom end of the power shaft (27); columns (36) are evenly spacedly mounted on the bottom of the chassis portion (37); and a bottom ring body (35) is fixedly connected to the bottom end of the columns (36).

4. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 3, characterized in that: L-shaped stirring portions (34) corresponding to the upper stirring rod (32) are evenly spaced and installed at the outer edge of the bottom ring body (35), and winding rods (33) are connected between the L-shaped stirring portions (34) at the left and right ends and the upper stirring rod (32).

5. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 4, characterized in that: Two crushing rollers (22) are installed in the inner cavity of the machine body (21) so as to rotate symmetrically frontward and rearward about the center line of the machine body (21); a crushing power module (24) is fixedly installed on the right end surface of the machine body (21); the rotating shafts of the crushing rollers (22) are fixedly connected to the power end of the crushing power module (24); a funnel (23) is fixedly installed on the upper end surface of the machine body (21); and the discharge port at the bottom of the funnel (23) is directly opposite to the middle position of the two crushing rollers (22).

6. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 5, characterized in that: A slurry pipe (12) is fixedly connected to the bottom discharge port of the stirring tank (15), and the slurry pipe (12) is connected to the bottom feed port of the reaction tower (40).

7. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 6, characterized in that: A base (10) is fixedly mounted on the mixing tank (15), a supporting steel frame (11) is fixedly mounted at the bottom of the base (10), an extension portion (13) is arranged on the right end surface of the base (10), and a support plate (14) is fixedly mounted between the extension portion (13) and the machine body (21).

8. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 7, characterized in that: The residual slurry alkaline concentration data detected in the slurry alkaline concentration meter (41) and the carbon dioxide concentration data detected in the carbon dioxide concentration meter (42) are transmitted to the main control system end. When the carbon dioxide concentration increases and the residual slurry alkaline concentration decreases gently, the main control system end issues a first instruction, and the water control valve group (17) receives the instruction and gradually reduces the discharge volume until the carbon dioxide concentration fluctuates within a safe range.

9. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 8, characterized in that: When the carbon dioxide concentration drops in a fault-like manner and the alkaline concentration of the residual slurry increases, the main control system sends out a command, and the control power module (20) receives the command to gradually reduce the amount of alkaline solid waste entering the inner cavity of the mixing tank (15) until the carbon dioxide concentration fluctuates within a safe range.

10. The carbon capture and storage process for comprehensive utilization of alkaline solid waste according to claim 9, characterized in that: The safety range of carbon dioxide concentration is arranged in several groups, each group of safety range of carbon dioxide concentration corresponds to the number of times of carbon dioxide absorption cycle, and each group of safety range of carbon dioxide concentration is reduced by 20%-30% compared with the previous group.

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