Carbon dioxide sequestration experiment simulation device and method

Abstract

The invention relates to the technical field of carbon dioxide sequestration, in particular to a carbon dioxide sequestration experimental simulation device and method.The carbon dioxide sequestration experimental simulation device comprises a mounting frame, a reaction kettle is mounted above the mounting frame, a heating part used for heating the reaction kettle is mounted at the bottom in a lifting mode, and a first reaction section, a second reaction section and a third reaction section are distributed in the reaction kettle; the lifting assembly comprises a lifting rod, telescopic rods used for driving the lifting rod to move up and down are arranged on the two sides of the lifting rod, the lower end of the lifting rod extends into the reaction kettle, a lifting disc is fixedly installed at the bottom of the lifting rod, and the diameter of the lifting disc is the same as that of the third reaction section of the reaction kettle; and the stirring assembly is rotationally mounted in the lifting disc. According to the reaction kettle, the lifting disc is arranged in the reaction kettle, when solid carbonate is generated through reaction, the solid carbonate is taken out, the reaction kettle does not need to be opened for a long time in the whole taking-out process, and the influence of the sampling process on the reaction environment in the reaction kettle is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide storage, and in particular to a carbon dioxide storage experimental simulation device and method. Background Art

[0002] The seafloor CO2 storage experiment is a complex and comprehensive research process, which aims to explore the feasibility and technical methods of safely and effectively storing CO2 in seafloor sediments or rock structures. The experimental process usually includes: water-rock reaction simulation experiments under static closed / dynamic open conditions, dissolution / precipitation reaction kinetics simulation experiments of silicate rock minerals, dissolution and stability evaluation experiments of carbonate minerals, in-situ carbonation experiments of minerals under supercritical CO2 conditions, etc.

[0003] During the experiment, it is necessary to continuously sample and observe the reaction materials. During the experiment, the carbon dioxide storage experimental simulation device in the prior art can sample the gaseous and liquid carbon dioxide inside the reactor through pipelines, but it is difficult to sample the solid substances produced by the reaction of carbon dioxide with silicate minerals or natural rock samples (carbonate minerals are generated by the reaction of carbon dioxide with minerals rich in metal ions such as magnesium and calcium). Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a carbon dioxide storage experimental simulation device and method, which can effectively solve the problem in the prior art that it is difficult to operate in the process of sampling solid substances after the reaction of carbon dioxide with minerals or silicate rocks from inside the reactor.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a carbon dioxide storage experimental simulation device and method, comprising a mounting frame, a reactor is mounted on the top, a heating element for heating the reactor is mounted on the bottom, and a first reaction section, a second reaction section and a third reaction section are distributed in the reactor;

[0009] A lifting assembly, comprising a lifting rod, telescopic rods for driving the lifting rod to move up and down are arranged on both sides of the lifting rod, the lower end of the lifting rod extends into the interior of the reactor, a lifting plate is fixedly installed at the bottom of the lifting rod, the diameter of the lifting plate is the same as the diameter of the third reaction section of the reactor, and the lifting plate is used to separate the first reaction section, the second reaction section and the third reaction section in different reaction stages;

[0010] The stirring assembly is rotatably installed inside the lifting plate and is used to stir the reaction substances inside the reactor.

[0011] Furthermore, two telescopic members are fixedly mounted on the bottom of the mounting frame, and the tops of the two telescopic members are respectively fixedly connected to the two sides of the heating member, and the telescopic members are used to drive the heating member to move up and down.

[0012] Furthermore, the first reaction section, the second reaction section and the third reaction section are sequentially distributed from bottom to top, the inner wall diameter of the first reaction section is larger than that of the third reaction section, and the inner wall where the second reaction section is located is an inclined surface.

[0013] Furthermore, a plurality of mounting grooves are provided on the lifting plate, the stirring assembly is rotatably installed inside the mounting grooves, the lifting rod is hollow inside, a transmission shaft for driving the stirring assembly to rotate is rotatably installed inside the lifting rod, the upper end of the transmission shaft extends out of the lifting rod, and a driving member for driving the transmission shaft to rotate is suspended above the reactor.

[0014] Furthermore, a lifting shaft is slidably installed below the transmission shaft, the lifting shaft rotation seal is installed inside the lifting rod, a rotating disk is fixedly installed at the bottom of the lifting shaft, and a driving gear is provided on the rotating disk for driving the stirring assembly to rotate.

[0015] Furthermore, the stirring assembly includes a stirring plate, a sliding rod is provided at one end of the stirring plate, a mounting cylinder for the sliding rod to slide into is provided on one side of the mounting groove of the lifting plate, a meshing gear is rotatably installed inside the mounting cylinder, the meshing gear is meshed with the driving gear for transmission, and the meshing gear is used to drive the stirring plate to rotate inside the mounting groove.

[0016] Furthermore, the top view projection contour of the stirring plate is an isosceles trapezoid, the contour shape of the mounting groove is adapted to the stirring plate, and an elastic member for pushing the stirring plate to move away from the mounting cylinder is fixedly installed inside the mounting cylinder, and the two ends of the elastic member are respectively connected to the inner wall of the mounting cylinder and one end of the sliding rod.

[0017] Furthermore, a sealing groove is provided on the inner wall of the installation groove, the height of the sealing groove is adapted to the thickness of the stirring plate, and a sliding plate is rotatably installed on one end of the stirring plate away from the installation cylinder through a rotating connecting piece, and the other end of the sliding plate extends through the lifting plate.

[0018] A carbon dioxide storage experimental simulation method comprises the following steps:

[0019] S1. First, a mineral or natural rock mineral sample rich in metal ions such as magnesium and calcium that reacts with carbon dioxide is put into a reactor, and a reaction solution medium is added to the reactor;

[0020] S2, connecting the carbon dioxide gas source to the connecting inlet on one side of the reactor, and injecting the carbon dioxide into the reactor after pressurizing it through a pressure pump, so that the carbon dioxide maintains a high-pressure state inside the reactor;

[0021] S3, moving the heating element to the vicinity of the reactor body, heating the reactor to the target temperature, adjusting the pressure valve on the reactor, and controlling the partial pressure of carbon dioxide in the reactor to the target pressure;

[0022] S4. Using a driving member to drive the transmission shaft to rotate, the transmission shaft drives the multiple stirring plates on the lifting plate to rotate through the lifting shaft, so as to stir the solution medium in the reactor and the rock or mineral rich in metal ions such as magnesium and calcium. The carbon dioxide gas formed after heating is partially dissolved in the solution and reacts with the rock mineral rich in metal ions such as magnesium and calcium to form solid carbonate;

[0023] S5. Drive the lifting rod to move upward, drive the lifting plate at the bottom of the lifting rod to move upward, so that the solid carbonate on the lifting plate moves to the upper outlet of the reactor, and then open the upper outlet of the reactor to take part of the solid carbonate out of the reactor for detection.

[0024] Beneficial Effects

[0025] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0026] 1. The present invention arranges a lifting plate inside the reactor. When the reaction generates solid carbonate, the lifting plate is placed at a deeper position inside the reactor to allow the solid carbonate to precipitate on the lifting plate. The lifting rod is then driven upward by the telescopic rod to bring the solid carbonate to the outlet above the reactor. The discharge port above the reactor is then opened to take out the solid carbonate. During the entire taking-out process, the reactor does not need to be opened for a long time, thereby reducing the impact of the sampling process on the reaction environment inside the reactor.

[0027] 2. In the present invention, a three-layer space is formed inside the reactor. The first reaction section is used to provide a reaction space for liquid carbon dioxide, and the third reaction section is used to cooperate with the lifting plate to form a sealed space, so as to facilitate the sampling of solid carbonate.

[0028] 3. In the present invention, a lifting shaft is arranged below the transmission shaft. When the lifting rod moves upward, the lifting shaft is slidably connected with the transmission shaft up and down. The lifting shaft moves upward synchronously with the lifting rod. During the rotation of the transmission shaft, the transmission shaft drives the rotating disk to rotate through the lifting shaft, thereby achieving the purpose of driving the stirring assembly to rotate.

[0029] 4. In the present invention, an elastic member for pushing the stirring plate to move is arranged inside the mounting cylinder. During the stirring process, the elastic member can make the stirring plate be located on a side of the mounting groove further away from the mounting cylinder, so that a gap can be left between the stirring plate and the inner wall of the mounting groove, thereby avoiding friction between the stirring plate and the inner wall of the mounting groove during rotation, and making the stirring plate rotate more smoothly.

[0030] 5. In the present invention, when taking out the solid carbonate from the reactor, a sliding plate is rotatably arranged at the tail of the stirring plate. When the stirring plate moves upward following the lifting plate, the end of the sliding plate at the tail of the stirring plate away from the stirring plate will contact the second reaction section. As the lifting plate continues to move upward, the inner wall of the reactor at the second reaction section will squeeze the sliding plate to move toward the stirring plate. The outer edge of the stirring plate slides into the sealing groove, so that the stirring plate and the lifting plate have a better sealing effect, and the lifting plate can separate the interior of the reactor into two layers, which can minimize the leakage of the internal air pressure of the reactor and reduce the influence of the sampling process on the carbon dioxide reaction experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the heating element of the present invention when it is separated from the reaction kettle;

[0034] Figure 3 It is a schematic diagram of the internal structure of the reactor of the present invention;

[0035] Figure 4 It is a side view of the internal structure of the reactor of the present invention;

[0036] Figure 5 It is a schematic diagram of the overall structure of the lifting assembly of the present invention;

[0037] Figure 6 It is a schematic diagram of the bottom structure of the lifting plate of the present invention;

[0038] Figure 7 It is a cross-sectional view of the internal structure of the lifting rod of the present invention;

[0039] Figure 8 It is a cross-sectional view of the internal structure of the lifting plate of the present invention.

[0040] The numbers in the figure represent:

[0041] 1. Mounting frame; 2. Heating element; 21. Telescopic element;

[0042] 3. Reactor; 3a. First reaction section; 3b. Second reaction section; 3c. Third reaction section; 31. Discharge port;

[0043] 4. Lifting assembly; 41. Telescopic rod; 42. Lifting rod; 43. Lifting plate; 431. Mounting cylinder; 432. Meshing gear; 433. Elastic member; 4301. Sealing groove; 44. Transmission shaft; 45. Driving member; 46. Rotating plate; 461. Driving gear; 47. Lifting shaft;

[0044] 5. stirring assembly; 51. stirring plate; 511. sliding rod; 52. sliding plate; 53. rotating connecting piece. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0046] The present invention will be further described below in conjunction with the embodiments.

[0047] When the carbon dioxide storage experimental simulation device is used, in order to fully understand the state of carbon dioxide in the entire reaction process, the carbon dioxide and its reactants inside the reactor are usually sampled intermittently, so as to timely understand the various stages of the reaction and the state of carbon dioxide. During the sampling process, although the gaseous and liquid carbon dioxide inside the reactor can be conveniently sampled through pipelines, it is relatively difficult to operate when sampling solid substances produced by carbon dioxide and silicate minerals or rock blocks.

[0048] To this end, an embodiment of the present invention provides a carbon dioxide storage experiment simulation device and method, the purpose of which is at least to set a lifting component 4, and when the reaction generates solid carbonate, place the lifting plate 43 at a deeper position inside the reactor, so that the solid carbonate falls on the lifting plate 43, and then by driving the lifting rod 42 to move upward, the solid carbonate can be brought to the upper outlet of the reactor, and the solid carbonate can be taken out for detection by opening the upper outlet of the reactor.

[0049] Embodiment: A carbon dioxide storage experimental simulation device, such as Figure 1 - Figure 4 As shown, it includes a mounting frame 1, a reactor 3 is mounted on the top, a discharge port is arranged on the top of the reactor 3, the volume of the reactor 3 is 200 ml, the inner diameter is not less than 30 mm, the working temperature is room temperature to 450 ° C, the working pressure is not less than 70 MPa, and high temperature and corrosion resistant Inconel 625 nickel-based alloy or Hastelloy is used, and multiple physical and chemical sensor interfaces are arranged on the outside (such as temperature, pressure, pH value, hydrogen fugacity, oxygen fugacity, H2S, etc., which belong to conventional settings in the prior art and will not be repeated in this application);

[0050] A heating element 2 for heating the reaction kettle 3 is installed at the bottom in a lifting manner. The reaction kettle 3 is provided with a first reaction section 3a, a second reaction section 3b and a third reaction section 3c.

[0051] The lifting assembly 4 includes a lifting rod 42. Telescopic rods 41 are provided on both sides of the lifting rod 42 for driving the lifting rod 42 to move up and down. The telescopic rods 41 can be electric telescopic rods. The lower end of the lifting rod 42 extends into the interior of the reactor 3. A lifting plate 43 is fixedly installed at the bottom of the lifting rod 42. The diameter of the lifting plate 43 is the same as the diameter of the third reaction section 3c of the reactor 3. The lifting plate 43 is used to separate the first reaction section 3a, the second reaction section 3b and the third reaction section 3c in different reaction stages;

[0052] The stirring assembly 5 is rotatably mounted inside the lifting plate 43 and is used to stir the reaction substances inside the reactor 3 .

[0053] In the present invention, a lifting plate 43 is arranged inside the reactor 3. When the reaction generates solid carbonate, the lifting plate 43 is placed at a deeper position inside the reactor to allow the solid carbonate to precipitate on the lifting plate 43. The lifting rod 42 is then driven upward by the telescopic rod 41 to bring the solid carbonate to the upper outlet of the reactor 3. The discharge port above the reactor 3 is then opened to take out the solid carbonate. During the entire taking-out process, the reactor 3 does not need to be opened for a long time, thereby reducing the impact of the sampling process on the reaction environment inside the reactor 3 (the carbon dioxide reaction experiment requires that a certain high pressure state be maintained inside the reactor 3, usually at 0 to 50 MPa).

[0054] Furthermore, if Figure 2 As shown, two telescopic members 21 are fixedly mounted on the bottom of the mounting frame 1 , and the tops of the two telescopic members 21 are fixedly connected to the two sides of the heating member 2 , respectively. The telescopic members 21 are used to drive the heating member 2 to move up and down.

[0055] Among them, by arranging two telescopic parts 21 at the bottom of the mounting frame 1, the two telescopic parts 21 jointly drive the heating element 2 to move up and down. When the heating element 2 is located at the top, the inner wall of the heating element 2 is in close contact with the outer wall of the reactor 3, and the reaction material inside the reactor 3 can be heated by heat transfer. During the cooling process, the heating element 2 can be conveniently driven to move downward, so that the heating element 2 and the reactor 3 are separated from each other, so that the heat inside the reactor 3 can be quickly dissipated from the surface of the reactor 3.

[0056] Furthermore, if Figure 3 , Figure 4 As shown, the first reaction section 3a, the second reaction section 3b and the third reaction section 3c are distributed sequentially from bottom to top, the inner diameter of the first reaction section 3a is larger than that of the third reaction section 3c, and the inner wall where the second reaction section 3b is located is an inclined surface.

[0057] Among them, by forming a three-layer space inside the reactor 3, the first reaction section 3a is used to provide a reaction space for liquid carbon dioxide, and the third reaction section 3c is used to cooperate with the lifting plate 43 to form a sealed space, which is convenient for sampling solid carbonate.

[0058] Furthermore, if Figure 5 , Figure 6 As shown, the lifting plate 43 is provided with a plurality of mounting grooves, the stirring assembly 5 is rotatably mounted inside the mounting grooves, the lifting rod 42 is hollow inside, a transmission shaft 44 for driving the stirring assembly 5 to rotate is rotatably mounted inside the lifting rod 42, the upper end of the transmission shaft 44 extends out of the lifting rod 42, and a driving member 45 for driving the transmission shaft 44 to rotate is suspended above the reactor 3.

[0059] Among them, by setting a plurality of mounting grooves on the lifting plate 43 and setting a stirring assembly 5 inside the mounting groove, the liquid carbon dioxide can be stirred during the heating process or the reaction of carbon dioxide with minerals rich in metal ions such as magnesium and calcium, thereby accelerating the reaction rate or heating uniformity between the substances inside the reactor 3.

[0060] Furthermore, if Figure 6 , Figure 7 As shown, a lifting shaft 47 is installed below the transmission shaft 44 for sliding up and down movement. The lifting shaft 47 is rotatably sealed inside the lifting rod 42. A rotating disk 46 is fixedly installed at the bottom of the lifting shaft 47. The rotating disk 46 is provided with a driving gear 461 for driving the stirring assembly 5 to rotate.

[0061] Among them, by setting a lifting shaft 47 under the transmission shaft 44, the lifting shaft 47 is connected to the transmission shaft 44 by sliding up and down when the lifting rod 42 moves upward, and the lifting shaft 47 moves upward synchronously with the lifting rod 42. During the rotation of the transmission shaft 44, the transmission shaft 44 drives the rotating disk 46 to rotate through the lifting shaft 47, thereby achieving the purpose of driving the stirring component 5 to rotate.

[0062] Furthermore, if Figure 7 , Figure 8 As shown, the stirring assembly 5 includes a stirring plate 51, one end of which is provided with a sliding rod 511, and one side of the mounting groove of the lifting plate 43 is provided with a mounting cylinder 431 for the sliding rod 511 to slide into, and a meshing gear 432 is rotatably installed inside the mounting cylinder 431, and the meshing gear 432 is meshed with the driving gear 461 for transmission, and the meshing gear 432 is used to drive the stirring plate 51 to rotate inside the mounting groove.

[0063] Among them, by setting a sliding rod 511 at one end of the stirring plate 51, one end of the sliding rod 511 is inserted into the interior of the mounting cylinder 431 and is transmission-connected to the meshing gear 432. When the driving gear 461 rotates, it can conveniently drive multiple stirring plates 51 to rotate with the sliding rod 511 as the axis, so that the liquid and reaction substances inside the reactor 3 can be fully stirred.

[0064] Furthermore, if Figure 7 , Figure 8 As shown, the top view projection contour of the stirring plate 51 is an isosceles trapezoid, the contour shape of the mounting groove is adapted to the stirring plate 51, and an elastic member 433 is fixedly installed inside the mounting cylinder 431 for pushing the stirring plate 51 to move away from the mounting cylinder 431, and the two ends of the elastic member 433 are respectively connected to the inner wall of the mounting cylinder 431 and one end of the sliding rod 511.

[0065] Among them, by arranging an elastic member 433 inside the mounting cylinder 431 for pushing the stirring plate 51 to move, during the stirring process, the elastic member 433 can make the stirring plate 51 be located on the side of the mounting groove that is farther away from the mounting cylinder 431, so that a gap can be left between the stirring plate 51 and the inner wall of the mounting groove, which can avoid friction between the stirring plate 51 and the inner wall of the mounting groove during rotation, and make the stirring plate 51 rotate more smoothly.

[0066] Among them, one end of the elastic member 433 connected to the sliding rod 511 is a rotation connection, and during the rotation of the sliding rod 511, the elastic member 433 will not be driven to rotate.

[0067] Furthermore, if Figure 7 , Figure 8As shown, a sealing groove 4301 is provided on the inner wall of the mounting groove, and the height of the sealing groove 4301 is adapted to the thickness of the stirring plate 51. The end of the stirring plate 51 away from the mounting cylinder 431 is rotatably mounted with a sliding plate 52 through a rotating connecting piece 53, and the other end of the sliding plate 52 extends through the lifting plate 43.

[0068] Among them, when taking out the solid carbonate from the reactor 3, a sliding plate 52 is rotatably set at the tail of the stirring plate 51. When the stirring plate 51 moves upward following the lifting plate 43, the end of the sliding plate 52 at the tail of the stirring plate 51 away from the stirring plate 51 will contact the second reaction section 3b. As the lifting plate 43 continues to move upward, the inner wall of the reactor 3 at the second reaction section 3b will squeeze the sliding plate 52 to move toward the stirring plate 51, and the outer edge of the stirring plate 51 slides into the sealing groove 4301, so that the stirring plate 51 and the lifting plate 43 have a better sealing effect, and the lifting plate 43 can separate the interior of the reactor 3 into two layers, which can minimize the leakage of the internal air pressure of the reactor 3 and reduce the influence of the sampling process on the carbon dioxide reaction experiment.

[0069] In addition, during the sampling process, a booster pump can be used to deliver gas to the reactor to maintain the high-pressure environment inside the reactor, so that the high-pressure environment inside the reactor 3 is in a dynamic equilibrium state, further reducing the impact of the sampling process on the carbon dioxide reaction experiment.

[0070] A carbon dioxide storage experimental simulation method comprises the following steps:

[0071] S1. First, a mineral or natural rock mineral sample rich in metal ions such as magnesium and calcium that reacts with carbon dioxide is put into the reactor 3, and a reaction solution medium (natural seawater, brine or artificially synthesized specific solution, etc.) is added to the reactor 3, and the reaction medium is kept for a period of time to stabilize the internal pressure of the reactor 3 (the air pressure state is in overpressure);

[0072] S2, connecting the carbon dioxide gas source to the connecting inlet on one side of the reactor 3, and injecting the carbon dioxide into the reactor 3 after pressurizing it through a pressure pump, so that the carbon dioxide maintains a high pressure state inside the reactor 3;

[0073] S3, moving the heating element 2 to the vicinity of the kettle body, heating the reactor 3 to the target temperature, and adjusting the pressure valve to control the partial pressure of carbon dioxide in the reactor 3 to the target pressure;

[0074] The heating element may also be a fixed heating furnace, such as a commercialized reactor, for details, please refer to (https: / / www.yanzheng17.com / products_deta i l_case_back / 49.html);

[0075] S4, using the driving member 45 to drive the transmission shaft 44 to rotate, and the transmission shaft 44 drives the multiple stirring plates 51 on the lifting plate 43 to rotate through the lifting shaft 47, so as to stir the solution medium inside the reactor 3 and the rock or mineral rich in metal ions such as magnesium and calcium, and the carbon dioxide gas formed after heating is partially dissolved in the solution, and reacts with the rock mineral rich in metal ions such as magnesium and calcium to form solid carbonate;

[0076] S5, driving the lifting rod 42 to move upward, driving the lifting plate 43 located at the bottom of the lifting rod 42 to move upward, so that the solid carbonate located on the lifting plate 43 moves to the upper outlet of the reactor 3, and then opening the upper outlet of the reactor 3 to take part of the solid carbonate out of the reactor 3 for detection.

[0077] Working principle: In the experimental stage, the lifting plate 43 is first lowered into the liquid carbon dioxide. During the reaction process, the driving member 45 drives the transmission shaft 44 to rotate, and the transmission shaft 44 drives the rotating plate 46 to rotate through the lifting shaft 47. The driving gear 461 on the rotating plate 46 meshes with the meshing gear 432 for transmission. The meshing gear 432 drives the sliding rod 511 inserted into the meshing gear 432, thereby driving the multiple stirring plates 51 on the lifting plate 43 to rotate, so that the liquid carbon dioxide fully contacts with the minerals rich in metal ions such as magnesium and calcium, and reacts with each other;

[0078] During the sampling stage, the telescopic rod 41 drives the lifting rod 42 to move upward (at this time, the stirring plate 51 is in a horizontal state), and the lower part of the lifting rod 42 drives the lifting plate 43 to move upward. At this time, the solid carbonate precipitated on the lifting plate 43 moves upward synchronously with the lifting plate 43. When the lifting plate 43 moves to the second reaction section 3b, the sliding plates 52 around the lifting plate 43 will contact the inner wall of the reactor 3 at the second reaction section 3b and squeeze the sliding plates 52 to move toward the stirring plate 51. As the lifting plate 43 continues to move upward, the sliding plates 52 The moving plate 52 drives the outer edge of the stirring plate 51 to slide into the sealing groove 4301, thereby increasing the sealing of the mounting groove on the lifting plate 43, and further reducing the air pressure leakage on the lifting plate 43 during the sampling process. Afterwards, when the lifting plate 43 moves to the third reaction section 3c, the outer edge of the lifting plate 43 is in close contact with the inner wall of the reactor 3 at the third reaction section 3c, and a sampling space is formed above the lifting plate 43. Afterwards, the discharge port above the reactor 3 can be conveniently opened to take out the solid carbonate on the lifting plate 43 for testing.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A carbon dioxide storage experimental simulation device, characterized in that: include: A mounting frame (1) is provided with a reaction kettle (3) mounted on the top, and a heating element (2) is provided at the bottom thereof for heating the reaction kettle (3) in a lifting manner, wherein a first reaction section (3a), a second reaction section (3b) and a third reaction section (3c) are distributed in the reaction kettle (3); A lifting assembly (4), comprising a lifting rod (42), telescopic rods (41) for driving the lifting rod (42) to move up and down are arranged on both sides of the lifting rod (42), the lower end of the lifting rod (42) extends into the interior of the reaction kettle (3), a lifting plate (43) is fixedly installed at the bottom of the lifting rod (42), the diameter of the lifting plate (43) is the same as the diameter of the third reaction section (3c) of the reaction kettle (3), and the lifting plate (43) is used to separate the first reaction section (3a), the second reaction section (3b) and the third reaction section (3c) in different reaction stages; The stirring assembly (5) is rotatably mounted inside the lifting plate (43) and is used to stir the reaction substances inside the reaction kettle (3).

2. A carbon dioxide storage experimental simulation device according to claim 1, characterized in that: Two telescopic members (21) are fixedly mounted on the bottom of the mounting frame (1), and the tops of the two telescopic members (21) are respectively fixedly connected to the two sides of the heating member (2), and the telescopic members (21) are used to drive the heating member (2) to move up and down.

3. A carbon dioxide storage experimental simulation device according to claim 1, characterized in that: The first reaction section (3a), the second reaction section (3b) and the third reaction section (3c) are arranged in sequence from bottom to top; the inner diameter of the first reaction section (3a) is larger than that of the third reaction section (3c); and the inner wall where the second reaction section (3b) is located is an inclined surface.

4. A carbon dioxide storage experimental simulation device according to claim 3, characterized in that: The lifting plate (43) is provided with a plurality of mounting grooves, the stirring assembly (5) is rotatably mounted inside the mounting grooves, the lifting rod (42) is hollow inside, a transmission shaft (44) is rotatably mounted inside the lifting rod (42) for driving the stirring assembly (5) to rotate, the upper end of the transmission shaft (44) extends out of the lifting rod (42), and a driving member (45) for driving the transmission shaft (44) to rotate is suspended above the reaction kettle (3).

5. A carbon dioxide storage experimental simulation device according to claim 4, characterized in that: A lifting shaft (47) is slidably mounted up and down below the transmission shaft (44); the lifting shaft (47) is rotatably sealed and mounted inside the lifting rod (42); a rotating disk (46) is fixedly mounted at the bottom of the lifting shaft (47); and a driving gear (461) is provided on the rotating disk (46) for driving the stirring assembly (5) to rotate.

6. A carbon dioxide storage experimental simulation device according to claim 5, characterized in that: The stirring assembly (5) comprises a stirring plate (51), one end of which is provided with a sliding rod (511), one side of the installation groove of the lifting plate (43) is provided with an installation cylinder (431) for the sliding rod (511) to slide into, a meshing gear (432) is rotatably installed inside the installation cylinder (431), the meshing gear (432) is meshed with the driving gear (461) for transmission, and the meshing gear (432) is used to drive the stirring plate (51) to rotate inside the installation groove.

7. A carbon dioxide storage experimental simulation device according to claim 6, characterized in that: The top view projection profile of the stirring plate (51) is an isosceles trapezoid, the profile shape of the mounting groove is adapted to the stirring plate (51), an elastic member (433) for pushing the stirring plate (51) to move in a direction away from the mounting cylinder (431) is fixedly installed inside the mounting cylinder (431), and two ends of the elastic member (433) are respectively connected to the inner wall of the mounting cylinder (431) and one end of the sliding rod (511).

8. A carbon dioxide storage experimental simulation device according to claim 7, characterized in that: A sealing groove (4301) is provided on the inner wall of the installation groove, and the height of the sealing groove (4301) is adapted to the thickness of the stirring plate (51). One end of the stirring plate (51) away from the installation cylinder (431) is rotatably mounted with a sliding plate (52) via a rotating connecting piece (53), and the other end of the sliding plate (52) extends through the lifting plate (43).

9. A carbon dioxide storage experimental simulation method, using a carbon dioxide storage experimental simulation device according to any one of claims 6 to 8, characterized in that: The following steps are involved: S1. First, a mineral or natural rock mineral sample rich in metal ions such as magnesium and calcium that reacts with carbon dioxide is put into a reactor (3), and a reaction solution medium is added to the reactor (3); S2, connecting a carbon dioxide gas source to a connection inlet on one side of the reaction kettle (3), and injecting the carbon dioxide into the reaction kettle (3) after pressurizing it through a pressure pump, so that the carbon dioxide is maintained in a high-pressure state inside the reaction kettle (3); S3, moving the heating element (2) to the vicinity of the reactor body (3), heating the reactor (3) to the target temperature, adjusting the pressure valve on the reactor (3), and controlling the partial pressure of carbon dioxide in the reactor (3) to the target pressure; S4, using the driving member (45) to drive the transmission shaft (44) to rotate, and the transmission shaft (44) drives the plurality of stirring plates (51) on the lifting plate (43) to rotate through the lifting shaft (47), so as to stir the solution medium and the rock or mineral rich in metal ions such as magnesium and calcium in the reaction kettle (3), and the carbon dioxide gas formed after heating partially dissolves in the solution and reacts with the rock mineral rich in metal ions such as magnesium and calcium to form solid carbonate; S5, driving the lifting rod (42) to move upward, driving the lifting plate (43) located at the bottom of the lifting rod (42) to move upward, so that the solid carbonate located on the lifting plate (43) moves to the upper outlet of the reactor (3), and then opening the upper outlet of the reactor (3) to take part of the solid carbonate out of the reactor (3) for testing.

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