Basalt co2 mineralization sequestration container, sequestration device, and sequestration method

Abstract

The application discloses a basalt CO2 mineralization storage container, a storage device and a storage method. The storage container comprises a storage tank body, the inside of the storage tank body is formed into a storage cavity, the storage tank body is provided with a fluid input channel and a fluid output channel, and a sample chuck is arranged in the storage cavity and is provided with a sample placing groove for placing a basalt sample containing a crack network. CO2 gas, carbonic acid or sodium bicarbonate solution is injected into the storage cavity through the fluid input channel. The mineralization storage container is simple to operate, has high repeatability and can be used for similar simulation design of different forms of crack networks.

Description

Technical Field

[0001] The present invention relates to the field of CO2 storage technology, and in particular to a basalt CO2 mineralization storage container, a storage device and a storage method. Background Art

[0002] The process of basalt mineralization to store CO2 refers to injecting the captured CO2 into basalt formations rich in calcium, iron and magnesium. The CO2 reacts chemically with them to form carbonate minerals, thereby permanently storing the CO2 underground in a solid mineralized form. This is a natural mineralization method.

[0003] Regarding the mineralization storage of CO2, the current reaction materials are mostly concentrated in waste fly ash, serpentine slag, blast furnace slag or calcium-magnesium-containing materials and natural silicate ores, while the storage sites include foam concrete / solid waste concrete, abandoned goaf and mining microbial cementing filling materials. The existing mineralization storage methods have the following limitations: First, because the mineralization reaction takes a certain amount of time, the reaction samples in conventional tests are generally selected to be in slag or powder form, the purpose of which is to increase the reaction specific surface area, but the prepared samples cannot be used to fully analyze the impact of pore and crack effects on the mineralization storage effect. In addition, although the sample preparation methods such as slicing of natural rocks, artificial cutting grooves, and natural cracks can take into account the effect of cracks, the repeatability of the test, the morphology of the cracks, and the auxiliary test analysis all increase the inconvenience of operation and the cost of the test. Secondly, to increase the reaction rate and promote multiphase fluid mixing, conventional methods used in mineralization storage devices include vibration, magnetic stirring, and stirring paddles. Although these methods can enhance mass transfer efficiency, they also cause a certain degree of wear and tear on the stored samples, thereby obscuring the pattern of sample particle size changes before and after the reaction, making it impossible to accurately clarify the effect of the mineralization reaction. Common systems all use a single storage mode, such as a static storage system. Such a storage mode cannot meet the conditions for similar simulation of diverse storage environments, nor can it achieve the multi-storage functions of dry, wet, static, and dynamic integration. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, the present invention provides a basalt CO2 mineralization storage container, a sealing device and a sealing method, wherein the mineralization sealing container is simple to operate, can obtain the mineralization reaction effect, and at the same time, can similarly simulate different forms of fracture networks to carry out mineralization storage mechanism research.

[0006] Specifically, the following technical solutions are included:

[0007] An embodiment of the first aspect of the present invention provides a basalt CO2 mineralization storage container, the storage container comprising:

[0008] A sealing tank body, wherein a sealing cavity is formed inside the sealing tank body, and a fluid input channel and a fluid output channel are provided on the sealing tank body;

[0009] A sample chuck is disposed in the sealing cavity, and a sample placement groove is provided on the sample chuck, wherein the sample placement groove is used to place a basalt sample containing a fracture network;

[0010] Wherein, CO2 gas, carbonic acid or sodium bicarbonate solution is injected into the sealing cavity through the fluid input channel.

[0011] Optionally, the sealed tank includes:

[0012] The tank body is cylindrical;

[0013] Sealing heads are provided on both sides of the tank body, the two sealing heads and the tank body forming the sealing cavity, one of the sealing heads is provided with the fluid input channel, the other sealing head is provided with the fluid output channel, and the fluid input channel, the sealing cavity and the fluid output channel are in communication;

[0014] The screw cap is arranged on a side of the sealing head away from the sealing cavity.

[0015] Optionally, a temperature sensor and a pressure sensor are provided in the fluid input channel.

[0016] Optionally, a Y-ring sealing groove and an O-ring sealing groove are provided on the side of the sealing head facing the tank body, and the Y-ring sealing groove is provided close to the sealing cavity.

[0017] Optionally, an axle seat is provided on the inner wall of the tank body, a connecting shaft is provided in the axle seat, the connecting shaft is connected to one end of the sample chuck, and the other end of the sample chuck is connected to the side of one of the sealing heads facing the sealing cavity.

[0018] Optionally, a spring piece is provided on the sample chuck, one end of the spring piece is fixedly connected to the edge of the sample placement groove, and the other end of the spring piece is located above the basalt sample containing the fracture network.

[0019] An embodiment of the second aspect of the present invention provides a basalt CO2 mineralization storage device, the storage device comprising:

[0020] At least two of the aforementioned sealed containers, comprising a fluid input channel and a fluid output channel, wherein a basalt sample containing a fracture network is placed in the sealed container;

[0021] a storage box, wherein the plurality of sealed containers are arranged in the storage box;

[0022] a support frame on which the plurality of sealed containers are arranged, and the support frame is fixedly connected to the containing box;

[0023] A claw clamping mechanism is provided in the storage box, the claw clamping mechanism is used to clamp the sealed container, and the claw clamping mechanism is connected to the support frame through a connecting seat;

[0024] a sealing medium injection port, connected to the fluid input channel;

[0025] The sealing medium output end is communicated with the fluid output channel.

[0026] Optionally, the connecting seat is a rotating articulated base, which is arranged on the side of the support frame facing the claw clamping mechanism. The rotating articulated base includes a fixed section and a rotating section. The rotating section is configured to rotate on the fixed section. The fixed section is fixedly connected to the support frame, and the rotating section is fixedly connected to the claw clamping mechanism.

[0027] An embodiment of the third aspect of the present invention provides a basalt CO2 mineralization storage method, using the above-mentioned storage device, the storage method includes the following steps:

[0028] Preparation of basalt samples containing fracture networks;

[0029] and placing the basalt sample containing the fracture network into a sealed container;

[0030] Check the sealing of sealed containers;

[0031] According to the storage plan, determine the series or parallel connection of the storage devices, the storage environment and the storage mode, and conduct mineralization storage tests;

[0032] During the mineralization sealing test or after the mineralization sealing test, the sealing solution and / or basalt sample are extracted according to the sealing plan, and the mineralization reaction is analyzed.

[0033] Optionally, preparing the basalt sample containing the fracture network comprises:

[0034] Crushing and ball-milling basalt, and screening to obtain basalt particles;

[0035] preparing a carrier plate and cleaning the carrier plate;

[0036] Applying glue on the carrier to form a glue layer, and covering the basalt particles on the glue layer;

[0037] The basalt particles covering the adhesive layer are subjected to a seam treatment.

[0038] Embodiments of the present invention provide a basalt CO2 mineralization storage container, storage device, and storage method, wherein the storage container includes a storage tank body and a sample chuck disposed within the storage tank body. A basalt sample containing a fracture network is placed in a sample placement slot of the sample chuck, forming a sealing cavity within the storage tank body. The sealing tank body is also provided with a fluid input channel and a fluid output channel, through which CO2, CO2, and water or sodium bicarbonate solution are input into the sealing cavity. The mineralization and storage of CO2 achieved by using a basalt sample containing a fracture network is simple to operate, and the sample chuck can be reused repeatedly with high repeatability. The sample chuck can be provided with multiple sample placement slots, enabling similar simulation and design of fracture networks of different forms.

[0039] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 is a schematic diagram of a sealed container according to one embodiment of the present invention;

[0042] Figure 2 is a schematic diagram of a sample chuck according to one embodiment of the present invention;

[0043] Figure 3a is a schematic diagram of a first basalt sample according to one embodiment of the present invention;

[0044] Figure 3b is a schematic diagram of a second basalt sample according to an embodiment of the present invention;

[0045] Figure 3c is a schematic diagram of a third basalt sample according to an embodiment of the present invention;

[0046] Figure 3d is a schematic diagram of a fourth basalt sample according to an embodiment of the present invention;

[0047] Figure 4 is a schematic diagram of a basalt sample containing a fracture tip according to one embodiment of the present invention;

[0048] Figure 5 is a schematic diagram of a sealing device according to one embodiment of the present invention;

[0049] Figure 6 A flowchart of the steps of a sealing method according to one embodiment of the present invention;

[0050] Figure 7 The figure is a flow chart of the steps for preparing a basalt sample according to one embodiment of the present invention.

[0051] in, Figures 1 to 5 The corresponding relationship between the reference numerals and component names is as follows:

[0052] 100 sealing container, 101 fluid input channel, 102 fluid output channel, 103 sealing chamber, 104 shaft seat, 105 connecting shaft, 106 sample chuck, 107 spring piece, 108 sealing head, 109 screw pressure cap, 110 Y-ring sealing groove, 111 O-ring sealing groove, 112 tank body, 113 sample placement groove, 114 basalt sample, 1151 chopstick-shaped crack network, 1152 fence-shaped crack network, 1153 fishbone-shaped crack network, 1154 branch-shaped crack network, 116 basalt particles, 200 sealing device, 210 containing box, 220 support frame, 230 claw clamping mechanism, 240 rotating hinged base, 250 sealing medium injection end, 260 sealing medium output end. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0054] Before further describing the embodiments of the present invention in detail, the directional terms involved in the embodiments of the present invention, such as "upper part", "lower part" and "side part", do not have the meaning of limiting the scope of protection of the present invention.

[0055] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0056] Figure 1 is a schematic diagram of a sealed container according to one embodiment of the present invention;

[0057] like Figure 1 As shown, one embodiment of the present invention provides a basalt CO2 mineralization storage container, the storage container 100 includes:

[0058] A sealing tank body, wherein a sealing cavity 103 is formed inside the sealing tank body, and a fluid input channel 101 and a fluid output channel 102 are provided on the sealing tank body;

[0059] The sample chuck 106 is disposed in the sealing chamber 103 and is provided with a sample placement groove 113 for placing a basalt sample 114 containing a fracture network;

[0060] Wherein, CO2 gas, carbonic acid or sodium bicarbonate solution is injected into the sealing cavity 103 through the fluid input channel 101.

[0061] The sealing container 100 includes a sealing tank body and a sample chuck 106 disposed within the sealing tank body. A basalt sample 114 containing a fracture network is placed within a sample placement slot 113 of the sample chuck 106, forming a sealing cavity 103 within the sealing tank body. The sealing tank body is also provided with a fluid input channel 101 and a fluid output channel 102. Fluid input channel 101 is used to input CO2, CO2, and water or sodium bicarbonate solution into the sealing cavity 103. The mineralization and storage of CO2 using the basalt sample 114 containing a fracture network is simple to operate, and the sample chuck 106 is reusable and highly reproducible. Multiple sample placement slots 113 can be provided on the sample chuck 106, enabling similar simulation of different fracture network designs.

[0062] Specifically, after preparing the basalt sample 114 containing a fracture network, the basalt sample 114 containing a fracture network is placed in the sample placement groove 113 of the sample chuck 106 for fixation, and then the sealing fluid is injected into the sealing cavity 103 through the fluid input channel 101. At this time, part of the sealing fluid will penetrate into the fracture network of the basalt sample 114 containing a fracture network for sealing. At this time, the fluid output channel 102 is in a sealed state to ensure that the pressure and the sealing fluid exist in the sealing cavity 103 at the same time. After the injection of the sealing fluid is completed, the pressure in the sealing cavity 103 remains stable within a certain range, and the sealing test continues.

[0063] After the sealing test has been running for a certain period of time (while the sealing test continues), a portion of the sealed fluid can be extracted through the fluid output channel 102 to analyze its physical and chemical properties. This helps study the interaction between the sealed fluid and the basalt sample 114, such as mineral dissolution, precipitation, and chemical reactions. If the composition, pH, and dissolved substance concentration of the extracted sealed fluid differ from that of the sealed fluid before entering the sealing chamber 103, it indicates that chemical reactions within the basalt sample 114 have begun. In other words, extracting the sealed fluid through the fluid output channel 102 is used to analyze changes in the sealed fluid during the sealing test, such as its composition, pressure changes, and mineral dissolution, helping to understand the chemical and physical processes during the sealing test. At the conclusion of the sealing test, the sealed fluid can be extracted again to verify the sealing effect. In other words, extracting the sealed fluid after the test can verify the sealing quality and effectiveness of the basalt sample 114.

[0064] It should be noted that during the sealing test, it is not necessary to completely relieve the pressure at the beginning. Generally, a small amount of pressure is gradually released to reduce the pressure of the sealing container 100 to a level sufficient to safely open the valve of the fluid output channel 102. When the pressure drops to a suitable range, the valve of the fluid output channel 102 is opened to extract the sealed fluid (liquid or gas). After the extraction is completed, the internal pressure of the sealing container 100 needs to be readjusted through the fluid input channel 101 so that the pressure in the sealing cavity 103 reaches the pressure set for the sealing test. The pressure increase is achieved by re-injecting additional sealing fluid or gas, which can ensure that the pressure conditions of the subsequent sealing test are consistent with the pressure conditions of the previous sealing test. After the sealing test is completed, there is no need to maintain the test pressure in the sealing chamber 103. At this time, the pressure is released through the fluid output channel 102, and the sealed basalt sample 114 is safely taken out. That is to say, the valve of the fluid output channel 102 is gradually adjusted to reduce the pressure to atmospheric pressure, ensuring that the pressure reading in the sealing container 100 is close to the pressure value of the external environment (usually 0Pa), ensuring that there is no pressure difference between the sealing chamber 103 and the external environment, and then the sealing container 100 can be safely opened to take out the sealed basalt sample 114.

[0065] In a feasible embodiment, the sealed tank includes:

[0066] The tank body 112 is cylindrical;

[0067] Sealing heads 108 are provided on both sides of the tank body 112. The two sealing heads 108 and the tank body 112 form a sealing cavity 103. One sealing head 108 is provided with a fluid input channel 101, and the other sealing head 108 is provided with a fluid output channel 102. The fluid input channel 101, the sealing cavity 103, and the fluid output channel 102 are in communication.

[0068] The screw cap 109 is disposed on a side of the sealing head 108 facing away from the sealing cavity 103 .

[0069] The cylindrical tank body 112 and the sealing heads 108 at both ends of the tank body 112 form a sealed chamber 103. The sealed chamber 103 is used to place a basalt sample 114 containing a fracture network and the sealed fluid. The sealing head 108 seals the tube body and is then tightened by a screw cap 109. By removing the left sealing head 108 and screw cap 109 of the sealed container, the sealed chamber 103 can be cleaned to facilitate the next test. At the same time, by removing the left sealing head 108 and screw cap 109, the sample chuck 106 can be installed in the sealed chamber 103 and fixed by the connecting shaft 105 that is clamped into the end groove of the sample chuck 106.

[0070] It should be noted that the specific position of the sealing head 108 at both ends of the tank body 112 can be adjusted by the rotational force of the screw cap 109, and the sealing head 108 can be fixed. At the same time, it can also provide pressure support for the sealed container 100, which is convenient for the disassembly and assembly of the sealed container 100. In other words, the setting of the screw cap 109 can seal the sealed tank body, so that the sealed tank body forms a sealed cavity 103 that can withstand high pressure. At the same time, the setting of the screw caps 109 at both ends can also withstand the pressure generated by the sealed fluid inside the sealed cavity 103. In a high-pressure environment, the pressure exerted by the sealed fluid will act on various positions in the sealed cavity 103, especially the sealing positions at both ends of the sealed tank body. The screw cap 109 and the sealing head 108 can withstand this pressure together, which can avoid the sealing failure caused by the internal pressure of the sealed tank body, and thus ensure the reliability and effectiveness of the sealing at both ends of the sealed tank body. Among them, when the sample inside the sealed container 100 is loaded and disassembled, only the screw cap 109 and the sealing head 108 at one end can be disassembled.

[0071] It is understandable that the sealing tank body in the present application can withstand high-pressure and high-temperature environments, and is also corrosion-resistant. Therefore, the sealing tank body of the present application is made of high-strength, high-temperature-resistant, and corrosion-resistant materials. The sealing tank body can be made of stainless steel, titanium alloy or nickel-based alloy, and further selected 316 stainless steel, which can meet the test environment of high temperature, high pressure and corrosiveness. At the same time, by increasing the thickness of the sealing tank body and forming the sealing tank body into one piece, the existence of the welding interface can be avoided, and the high-pressure, high-temperature and corrosion-resistant performance of the sealing tank body can be further improved, thereby ensuring the reliability and safety of the sealing container 100 in the sealing test.

[0072] In a feasible embodiment, a temperature sensor and a pressure sensor are provided in the fluid input channel 101 .

[0073] Among them, the fluid input channel 101 is used to inject the sealing fluid, and a temperature sensor and a pressure sensor are set at the sealing fluid inlet of the fluid input channel 101 to facilitate timely monitoring of the temperature and pressure of the sealing environment inside the sealing container 100, and transmit the test data monitored by the temperature sensor and the pressure sensor to the wireless data receiving module. The wireless data receiving module is also connected to the mobile terminal for communication. The staff can receive the test data in time through the remote terminal and can observe the temperature and pressure changes during the sealing process during the mineralization sealing test at any time.

[0074] It should be noted that, before the sealing test, the pressure and temperature changes within the sealing container 100 are monitored in order to achieve the set test pressure and test temperature, and at the same time, to verify the sealing effectiveness of the sealing container 100. During the sealing test, the pressure and temperature changes within the sealing container 100 also need to be monitored. In the sealed sealing chamber 103, if a mineralization reaction occurs, the temperature and pressure within the sealing chamber 103 will fluctuate. These fluctuations provide multiple advantages for subsequent research and analysis: they help understand the kinetics and thermodynamic equilibrium of the mineralization reaction; they can help evaluate the stability and sealing efficiency of the sealing container 100; they can provide test data simulating real geological conditions; they can determine the optimal conditions for the mineralization reaction; and they can understand the interaction between the mineral (basalt sample 114) and the sealed fluid, as well as the phase change behavior of the sealed fluid.

[0075] In a feasible embodiment, a Y-ring sealing groove 110 and an O-ring sealing groove 111 are provided on the side of the sealing head 108 facing the tank body 112 , and the Y-ring sealing groove 110 is provided close to the sealing cavity 103 .

[0076] Among them, the circumferential walls of the two sealing heads 108 must form a seal with the inner wall of the tank body 112. The present application sets a Y-ring sealing groove 110 and an O-ring sealing groove 111 on the sealing head 108. Usually, the Y-ring sealing groove 110 is set close to the sealing cavity 103. The setting of two sealing rings can ensure the sealing of the sealing cavity 103 and ensure the reliability and feasibility of the sealing test.

[0077] It should be noted that a Y-shaped sealing ring is provided in the Y-shaped sealing groove 110, and an O-shaped sealing ring is provided in the O-shaped sealing groove 111. The Y-shaped sealing ring is a lip-shaped sealing ring with two lips, which is usually used in dynamic sealing environments. The design of the Y-shaped sealing ring enables it to generate additional sealing force under the action of pressure, and is suitable for sealing environments with reciprocating motion or large pressure fluctuations; the O-shaped sealing ring is usually used for static sealing, which relies on its own elastic deformation to fill the sealing groove under the action of pressure to achieve a sealing effect. In a complex sealing environment, the combination of the Y-shaped sealing ring and the O-shaped sealing ring ensures the reliability of the sealing of the sealed container under both dynamic and static conditions, and the double seal can extend the service life of the seal. Among them, the Y-shaped sealing ring is provided close to the sealing chamber 103 in order to better cope with the changes in the pressure in the sealing chamber 103 and provide dynamic sealing for the sealing chamber 103; the O-shaped sealing ring is at the end away from the sealing chamber 103, which is suitable for static sealing with relatively stable pressure, and the O-shaped sealing ring serves as a supplementary seal for the Y-shaped sealing ring, thereby improving the reliability of the seal.

[0078] In a feasible embodiment, an axle seat 104 is provided on the inner wall of the tank body 112, and a connecting shaft 105 is provided in the axle seat 104. The connecting shaft 105 is connected to one end of the sample chuck 106, and the other end of the sample chuck 106 is connected to one side of one of the sealing heads 108 facing the sealing cavity 103.

[0079] Among them, a shaft seat 104 is set on the inner wall of the tank body 112, and a connecting shaft 105 is set on the shaft seat 104. The connecting shaft 105 is clamped in the end groove of the sample chuck 106 to achieve the fixing of the sample chuck 106 by the connecting shaft 105. The end of the sample chuck 106 away from the connecting shaft 105 is plugged into the sealing head 108. Specifically, Figure 1 The sealing head 108 on the left is set as the first sealing head 108, and the sealing head 108 on the right is set as the second sealing head 108. The sample chuck 106 is plugged into the second sealing head 108. The shaft seat 104 and the connecting shaft 105 are set close to one end of the first sealing head 108. The distance between the connecting shaft 105 and the second sealing head 108 is used to place the sample chuck 106. Figure 1 or the sample chuck 106 is plugged into the first sealing head 108, the shaft seat 104 and the connecting shaft 105 are disposed near one end of the second sealing head 108, and the distance between the connecting shaft 105 and the first sealing head 108 is used to place the sample chuck 106.

[0080] It should be noted that this embodiment utilizes two sets of sample chucks 106, each provided with multiple sample placement slots 113. This allows for simultaneous sealing testing of basalt samples with diverse fracture networks. The provision of separate sample placement slots 113 facilitates studying the sealing effects of different fracture networks under the same sealing environment. Alternatively, three, four, or even more sample chucks 106 may be provided, depending on the volume of the sealing chamber 103 and test requirements. Multiple sample chucks 106 may be distributed circumferentially within the cylindrical body of the sealing chamber 103. In other words, the shaft seat 104 and connecting shaft 105 are disposed circumferentially along the inner wall of the tank body 112.

[0081] It is understandable that the arrangement of the shaft seat 104 and the connecting shaft 105 can ensure the stability of the sample chuck 106 and the stability of the basalt sample 114 containing the fracture network in the sample placement groove 113 when the sealing container 100 rotates.

[0082] Figure 2 FIG. 1 is a schematic diagram of a sample chuck according to one embodiment of the present invention.

[0083] In one possible implementation, Figure 2 As shown, a spring piece 107 is provided on the sample chuck 106 , one end of the spring piece 107 is fixedly connected to the edge of the sample placement groove 113 , and the other end of the spring piece 107 is located above the basalt sample 114 containing a fracture network.

[0084] Among them, a spring clip 107 is provided on the sample placement groove 113, one end of the spring clip 107 is fixedly connected to one side of the sample placement groove 113, and the other end of the spring clip 107 is located in the placement groove, which is used to support the basalt sample 114 containing the crack network. The elastic force of the spring clip 107 presses the surface of the basalt sample 114 containing the crack network to ensure that the basalt sample 114 containing the crack network can be stably placed in the sample placement groove 113. Even if the sealed container 100 rotates and shakes, the basalt sample 114 containing the crack network will not fall off from the sample placement groove 113.

[0085] It should be noted that the arrangement of the spring piece 107 on the sample chuck 106 facilitates the placement and sampling of the basalt sample 114 containing a fracture network.

[0086] Figure 5 Schematic diagram of a sealing device 200 according to an embodiment of the present invention.

[0087] like Figure 5 As shown, another embodiment of the present invention provides a basalt CO2 mineralization storage device 200, which includes:

[0088] At least two sealed containers 100 as described above, including a fluid input channel 101 and a fluid output channel 102, wherein a basalt sample 114 containing a fracture network is placed in the sealed container 100;

[0089] A storage box 210, wherein the plurality of sealed containers 100 are disposed in the storage box 210;

[0090] A support frame 220, on which multiple sealed containers 100 are mounted, and the support frame 220 is fixedly connected to the container box 210;

[0091] The claw clamping mechanism 230 is disposed in the storage box 210 and is used to clamp the sealed container 100. The claw clamping mechanism 230 is connected to the support frame 220 via a connecting seat.

[0092] The sealing medium injection port 250 is connected to the fluid input channel 101;

[0093] The sealing medium output end 260 is in communication with the fluid output channel 102 .

[0094] Among them, the sealing device 200 includes a containing box 210, in which a plurality of sealing containers 100, a support frame 220 and a claw clamping mechanism 230 are arranged. The plurality of sealing containers 100 are arranged on the support frame 220 and clamped by the claw clamping mechanism 230 to improve the stability of the sealing container 100. It can be understood that the number of claw clamping mechanisms 230 matches the number of sealing containers 100. The sealing device 200 is designed to integrate dry, wet, static and dynamic sealing modes, breaking through the single operating mode of the conventional sealing device 200, so as to adapt to a variety of sealing simulation environments and factor comparative analysis, and obtain rich and comprehensive sealing test results; the integration of multiple sealing containers 100 and the coupling of multiple sealing temperature implementation methods realize the parallel implementation of different sealing schemes, greatly reducing the time cost of the sealing test. That is, when multiple sealed containers 100 are required to be tested at the same temperature, a heat medium can be poured into the holding box 210; when multiple sealed containers 100 are required to be tested at different temperatures, an additional insulation module can be installed on the outer wall of each sealed container 100. The insulation module includes a heating belt and an insulation sleeve arranged outside the heating belt. The insulation module is installed outside the sealed container 100, and the heating belt is controlled by an independent temperature controller. This allows each sealed container 100 to be tested at a different temperature and the sealing quality at different temperatures to be studied. Performing sealing tests at multiple different temperatures simultaneously can reduce the time cost of the sealing test and improve the test efficiency.

[0095] Specifically, the holding box 210 serves as a carrier for the sealing containers 100, providing space for multiple sealing containers 100 and being used for concentrating pipelines, securing the sealing containers 100, and installing valves. The holding box 210 has a certain pressure-bearing capacity and is resistant to high temperatures. The pressure-bearing capacity is selected to be above 8 MPa. The temperature range is determined by the heat medium injected into the holding box 210. Typically, both ends of the holding box 210 are connected to a circulation pump and a heat exchanger via pipes, allowing the heat medium to be injected into the holding box 210. This enables the study of the sealing effect of different fracture networks in multiple sealing devices 100 at the same temperature. The heat medium can be selected from deionized water or thermal oil to achieve a balance between different temperature zones.

[0096] From the above, it can be seen that the temperature balance uses the same and stable temperature of the sealing environment in multiple sealing containers 100. If the influence of the temperature environment of different sealing tests on the sealing effect is similarly simulated, there is no need to inject heat medium into the containing box 210. Instead, it is only necessary to add an insulation module to the outside of the sealing container 100. By controlling the different temperatures of the insulation module, the sealing tests of multiple sealing containers are started at different test temperatures; when it is necessary to simulate the influence of different crack networks on the sealing effect under the same temperature environment, heat medium is injected into the containing box 210, and basalt samples containing different crack networks are loaded into multiple sealing containers 100.

[0097] Among them, the sealing medium injection end 250 is controlled to achieve strategic and planned injection of the sealing medium into the sealing cavity 103, which can simulate intermittent injection and continuous injection modes in the field formation. The sealing medium output end 260 can be used to extract the sealing medium from the corresponding sealing cavity 103, which can facilitate the detection and analysis of parameters such as ion concentration, mineralization degree, and element content of the sealing medium. It can also be used for pressure balance and release in the sealing cavity 103. It is understood that before the sealing test, the sealing medium parameters such as ion concentration, mineralization degree, and element content should be tested to facilitate comparison with the parameters of the sealing medium extracted from the test and the sealing medium obtained after the test, so as to realize the research of the sealing test process.

[0098] It is understood that since the multiple sealing medium injection ports 250 and the multiple sealing medium output ports 260 are connected in parallel, the sealing medium can be input into and extracted from different sealing containers 100. While three sealing containers 100 are used in this embodiment, two, four, or more sealing containers 100 may also be used. The number of sealing containers 100 in the sealing device 200 can be selected based on experimental requirements.

[0099] In a feasible embodiment, the connecting seat is a rotating articulated base 240, which is arranged on the side of the support frame 220 facing the claw clamping mechanism 230. The rotating articulated base 240 includes a fixed section and a rotating section. The rotating section is configured to rotate on the fixed section. The fixed section is fixedly connected to the support frame 220, and the rotating section is fixedly connected to the claw clamping mechanism 230.

[0100] Among them, by setting up the rotating hinged base 240, the rotation of the sealed container 100 on the support frame 220 can be realized. The rotating hinged base 240 includes a fixed section and a rotating section. The fixed section is fixedly connected to the support frame 220, and the rotating section is fixedly connected to the claw clamping mechanism 230. Through the rotational movement of the rotating section relative to the fixed section, different rotation angles of the claw clamping mechanism 230 on the support frame 220 are realized to achieve different test requirements; the claw clamping mechanism 230 can be a robotic arm or a hydraulic clamp, which clamps the middle part of the sealed container 100 in an open or closed form. A high-strength material is provided on the side of the claw clamping mechanism 230 facing the sealed container 100, and a plurality of convex structures or curved surface structures are provided on the high-strength material to improve the clamping of the claw clamping mechanism 230 on the sealed container 100; the rotating hinged base 240 includes a fixed section and a rotating section. The fixed section can be fixedly connected to the support frame 220 by a flange, or can be fixedly connected by bolts, or can be other detachable fixed connection methods, such as a snap connection. The rotating section and the fixed section can be driven by a motor, the fixed end of the driving motor is connected to the fixed section, and the output shaft of the driving motor is fixedly connected to the rotating section, so that the rotating section drives the claw clamping mechanism 230 to rotate, or they can be connected in the form of a rotating hinge, and the rotating section drives the claw clamping mechanism 230 and the sealing container 100 to rotate in turn, usually with a rotation angle of 0° to 45°. Among them, 0° refers to Figure 5 In the state, 45° refers to Figure 5 Rotate 45° to the left or right based on the

[0101] It should be noted that the sealing device 200 can be set up to fix the sealing container 100, or to rotate the sealing container 100 when it needs to be rotated. The two working modes correspond to static sealing and dynamic sealing, respectively. It is understandable that static sealing has a relatively low mass transfer efficiency due to the lack of external forces such as stirring or rotation to promote the mixing of the sealing medium. However, static sealing is simple to operate and easy to control, and the temperature and pressure in the sealing chamber 103 are more uniform; dynamic sealing can significantly improve the mixing and mass transfer efficiency of the sealing mechanism, prevent CO2 from gathering at the top of the sealing container 100, promote the rate of chemical reactions, and improve the sealing efficiency.

[0102] Sealing modes include dry and wet sealing, the difference between which lies in whether water is involved as a reaction medium. If the sealing medium injection port 250 only injects a certain pressure of CO2 into the sealing container 100, it is a dry sealing mode; if the sealing medium injection port 250 injects CO2 and water (i.e., carbonic acid) or a solution such as sodium bicarbonate into the sealing container 100, it is a wet sealing mode. The wet sealing mode can be combined with static or dynamic sealing modes to analyze the impact of changes in the state of the sealing container 100 on the sealing reaction rate and mineralization effect.

[0103] For example, in static storage mode, the temperature and pressure within the storage container 100 are typically stable. The sealing medium (CO2) dissolves in water or sodium bicarbonate solution and gradually reacts with the basalt sample 114, which contains a fracture network, to form carbonate minerals (such as calcite). The reaction rate is relatively slow because the dissolved CO2 gradually diffuses and comes into contact with the basalt sample 114, which contains a fracture network, limiting the reaction area. Furthermore, in static storage mode, the mineralization reaction is primarily influenced by temperature, pressure, and the contact area between the solution and the surface of the basalt sample 114. This slow reaction makes it suitable for analyzing mineralization reactions during long-term storage.

[0104] For example, in the dynamic sealing mode, the sealing medium (CO2) circulates or flows within the sealing container 100. The flowing sealing medium can achieve higher mass transfer efficiency, allowing the CO2 to diffuse more quickly to the surface of the basalt sample 114 containing the fracture network, thereby increasing the reaction rate between the basalt sample 114 and the CO2. Furthermore, in the dynamic sealing mode, the circulation of the sealing medium continuously brings new CO2 into contact with the basalt sample 114, promoting the reaction. The flow of the sealing medium also facilitates the movement of mineral precipitates (such as carbonates), preventing them from clogging the reaction surface of the basalt sample 114 and further deepening the mineralization reaction.

[0105] It should be noted that the dry sealing mode does not need to match the static sealing mode or the dynamic sealing mode. The dry sealing mode usually chooses the static sealing mode because the dry sealing mode does not require the extraction of the sealing medium in the sealing container 100. It only needs to take out the mineralized basalt sample 114 after the sealing test is completed.

[0106] Figure 6 The figure is a flowchart of the steps of a sealing method according to an embodiment of the present invention.

[0107] like Figure 6 As shown, another embodiment of the present invention provides a basalt CO2 mineralization storage method, using the above-mentioned storage device 200, the storage method includes the following steps:

[0108] Step 1, preparing a basalt sample containing a fracture network;

[0109] Step 2: placing the basalt sample containing the fracture network into a sealed container;

[0110] Step 3, testing the sealing of the sealed container;

[0111] Step 4: According to the storage plan, determine the series or parallel connection of the storage devices, the storage environment and the storage mode, and conduct a mineralization storage test;

[0112] Step 5: During or after the mineralization sealing test, extract the sealing solution and / or extract the basalt sample according to the sealing plan, and analyze the mineralization reaction.

[0113] In step 2, a basalt sample 114 containing a fracture network is placed in the sample placement slot 113 of the sealing container 100. After being compressed by the spring 107, the sample chuck 106 is placed in the sealing cavity 103, and then the sealing cavity 103 is sealed by the sealing head 108. In step 3, before the sealing test, the sealing container 100 is tested for sealing properties. Specifically, 2MPaCO2 is injected into the sealing container 100 to test the sealing properties of the sealing container 100. If there is a heat medium in the holding box 210 and cavitation occurs in the heat medium, the sealing properties of the sealing container 100 are unqualified. If there is no heat medium in the holding box 210, the sealing properties can be monitored by a pressure sensor at the sealing medium injection port 250. If the pressure of the pressure sensor drops, the sealing properties of the sealing container 100 are unqualified. In step 4, after the sealing test is passed, the test gas is evacuated, and the sealing containers 100 are determined to be connected in parallel or in series according to the sealing plan, where series connection means that the valves of multiple sealing containers 100 in the containing box 210 are opened at the same time to inject the same sealing medium, and parallel connection means that the valves of multiple sealing containers 100 in the containing box 210 are opened separately and different sealing media are injected; the sealing environment is isothermal or non-isothermal, isothermal means that the hot medium is re-injected into the containing box 210 so that the test temperature of multiple sealing containers 100 is the same, and non-isothermal means that the insulation module outside the sealing container 100 is opened so that multiple sealing containers 100 are subjected to sealing tests at different temperatures; dry sealing or wet sealing, static sealing or dynamic sealing, and then a CO2 mineralization sealing experiment is carried out on the basalt sample 114 containing a fracture network. In step 5, during or after the mineralization sealing test, the sealing medium and the basalt sample 114 containing the fracture network are extracted according to the sealing plan to facilitate analysis of the mineralization reaction effect. It should be noted that when removing the basalt sample 114 containing the fracture network, the sealing container 100 must be emptied and depressurized, and then the sealing head 108 and screw cap 109 on one side are opened to remove the sealed basalt sample 114 containing the fracture network.

[0114] Specifically, the mineralization sealing reaction is mainly related to factors such as temperature, pressure, sealing medium type, flow state of the sealing medium, fracture network type of the basalt sample 114, and reaction time. Through the sealing container 100 and the sealing device 200 of the present application, a comparative analysis of these factors can be achieved, and the following conclusions can be drawn: the mineralization reaction can be accelerated under high temperature and high pressure conditions, and the sealing efficiency can be improved; the wet sealing mode has a better mineralization reaction efficiency than the dry sealing mode due to the good fluidity of the sealing medium; the dynamic sealing mode increases the fluidity of the sealing medium, and thus can significantly increase the mineralization reaction rate, which is suitable for rapid mineralization sealing; the fracture network type of the basalt sample 114 increases the penetration depth of CO2 and the amount of mineralized products generated.

[0115] Figure 7 The figure is a flow chart of the steps for preparing a basalt sample according to one embodiment of the present invention.

[0116] like Figure 7 As shown, in one possible embodiment, preparing a basalt sample 114 containing a fracture network includes:

[0117] Step 201: crushing and ball-milling basalt, and obtaining basalt particles after screening;

[0118] Step 202: prepare and clean the carrier board;

[0119] Step 203: applying glue on the carrier to form a glue layer, and covering the glue layer with basalt particles;

[0120] Step 204 , performing seam treatment on the basalt particles covering the adhesive layer.

[0121] Among them, in step 201, basalt is crushed and ball-milled, and basalt particles 116 with a particle size of less than 0.1 mm are screened. Basalt particles 116 with a particle size of less than 0.1 mm can increase the specific surface area, accelerate the mineralization reaction rate, improve the CO2 diffusion efficiency, and improve the uniformity and reliability of the test results. In other words, small particles can effectively promote the reaction between CO2 and basalt sample 114, making the sealing test process more efficient and providing better test conditions for the collection and analysis of test data. In step 202, a carrier plate is prepared to place the screened basalt particles 116. The material of the carrier plate is flexibly selected according to the environment of the sealing chamber 103. The material of the carrier plate can be special glass, polytetrafluoroethylene, stainless steel, titanium alloy or polyetheretherketone. The environment of the sealing chamber 103 refers to the temperature, pressure and corrosiveness of the sealing medium in the sealing chamber 103. Special glass is suitable for experiments that require observation of chemical reactions and have a relatively mild chemical environment. Polytetrafluoroethylene is suitable for experiments with strong corrosiveness and high temperature. Stainless steel is suitable for high temperature and high pressure environments, but no For corrosive tests, titanium alloy is suitable for high temperature, high pressure and extremely corrosive tests, and polyetheretherketone is suitable for pressure resistance, high temperature and certain corrosive tests; the size of the carrier plate matches the size of the sample placement groove 113, and space is left in the sample placement groove 113 for fixing the shrapnel 107, that is, the size of the sample placement groove is slightly larger than the size of the basalt sample 114 carrier plate, and the basalt sample 114 is fixed by the shrapnel 107, which facilitates the removal and placement of the basalt sample 114; clean the surface of the carrier plate to prevent dust, debris, etc. from being adsorbed on the surface of the carrier plate. In step 203, a thin layer of glue is applied on the carrier. The material of the glue matches the material of the carrier. For example, shadowless glue or epoxy resin can be selected for the glue. Usually, thin coating means that the thickness of the glue is 0.01mm to 0.1mm, which can ensure high bonding strength and thus ensure the firmness of the basalt sample 114. Usually, when the material of the carrier is special glass, shadowless glue is selected. When the carrier is made of polytetrafluoroethylene, stainless steel, titanium alloy and polyetheretherketone, epoxy resin glue is selected. After the thin coating of glue is completed, it is flattened by a scraper, and the flattened glue is covered with 1 to 2 layers of basalt particles 116. The basalt particles 116 should be arranged as evenly as possible on the carrier. The layer to two-layer covering operation can ensure that most areas of the carrier surface can be covered with a layer of basalt particles 116, and a smaller area will be covered with two layers of basalt particles 116, so as to ensure the close adhesion between the basalt particles 116 and the carrier, and avoid the instability of the basalt sample 114 caused by the accumulation of multiple layers of basalt particles 116; after the glue is cured and the basalt particles 116 are bonded, the thickness of the basalt particles 116 covering the carrier is enough to invert the carrier without the basalt particles 116 falling off, that is, after the glue is cured, the basalt particles 116 should be firmly adhered to the carrier and will not fall off due to slight vibration, pressure or other operations.In step 204, in order to simulate the fracture network, that is, the fracture network of the basalt sample 114 in the test should simulate the structural form of the fracture network in the actual formation environment, and the artificial fractures should have similar morphology and characteristics to the actual fractures, such as the shape, distribution and connectivity of the fracture network, so that the test results are more consistent with the actual situation, the covering layer of the basalt particles 116 is subjected to a fracture treatment, such as using a tool (a blade, a needle and / or a fine drill, etc.) to carve fractures in the covering basalt particles 116 to form a fracture network that matches the actual situation, forming a chopstick-shaped fracture network 1151 (e.g., Figure 3a As shown), the fence-like crack network 1152 (as shown Figure 3b As shown), fishbone crack network 1153 (as shown Figure 3c As shown), the dendritic crack network 1154 (as shown Figure 3d The crack morphology is as shown in FIG1 , and the crack width range can be selected from 0.1 mm to 0.3 mm, preferably 0.2 mm. The chopstick-shaped crack network 1151 is parallel and regular, which is suitable for studying how the sealing medium flows in the uniformly arranged crack network. It can help simulate the typical parallel crack network structure and study the mineralization law of the sealing medium in the parallel regular cracks. The fence-shaped crack network 1152, the fishbone-shaped crack network 1153 and the branch-shaped crack network 1154 respectively simulate the staggered distribution of the crack network in the complex geological structure, which is helpful for studying the influence of the crack network morphology on the mineralization reaction or the sealing efficiency. It should be noted that the crack tip of each crack network form has a certain distance from the end of the carrier plate (such as Figure 4 As shown, the cracks do not penetrate to the ends of the basalt particle 116 carrier plate, which can simulate the situation in which the crack network is partially closed or extends only in a specific direction under actual conditions, and is helpful for studying the flow and reaction of the sealing medium in the incompletely open crack network. It is understandable that the crack network is not limited to the above-mentioned crack networks. Other similar crack networks or random crack networks can also be designed. It is only necessary to ensure that the basalt sample 114 containing the crack network can be repeatedly prepared. The similar crack network refers to a crack network structure similar to the crack network in the actual geological environment designed according to specific test requirements. Repeated preparation refers to the ability to produce basalt samples 114 with similar crack network structures to obtain repeatable results in the test. Repeated tests require multiple basalt samples 114 with the same conditions. Therefore, when preparing the basalt sample 114 containing the crack network, it is necessary to ensure that the structure and distribution of the crack network are controllable and consistent. Multiple basalt samples 114 can be prepared in batches. The samples here are also not limited to basalt. Materials with mineralized sealing properties such as shale, coal, tailings, and serpentine can also be selected.

[0122] It is understandable that although there are tiny gaps between basalt particles 116, these naturally formed gaps cannot form a complex, controllable fracture network structure. Artificial fracture treatment helps control the morphology, size, and distribution of the fracture network, making the basalt sample 114 similar to an actual fracture network, thereby enabling precise study of the permeability and mineralization behavior of the sealing medium within the fracture network. In this embodiment, basalt was selected as the test sample because it is rich in components (such as olivine and pyroxene) that can react with CO2 to form carbonate minerals, making it suitable for mineralization sealing experiments. Furthermore, basalt has high permeability, namely, a natural fracture and void structure, which facilitates simulation of the permeability behavior of the sealing medium in rock. Basalt is also a rock with high hardness and stability, making it suitable for research and analysis of long-term sealing experiments.

[0123] It should be noted that shale is suitable for studying underground oil and gas extraction and CO2 storage. Shale has low permeability and is suitable for simulating the storage of gas in low permeability formations. Coal contains natural micropores and cracks, which are suitable for studying the adsorption and storage behavior of gas in micropores, and are particularly suitable for studying the storage of methane and CO2. Tailings contain rich mineral components and are suitable for studying the resource utilization of minerals in waste and mineralization storage. Serpentine has good mineralization reaction ability and is suitable for studying the rapid storage of CO2. It is often used to simulate the storage process with high reaction efficiency. It can be seen that based on the characteristics of the various rocks described above, the sealing container 100 and the sealing device 200 of the present application can be used to analyze and study rocks in different engineering backgrounds. At the same time, for different rocks, the design parameters and sealing media will also be different. This application mainly uses basalt sample 114 as an example for explanation, but the mineralization of basalt and the mineralization of other rocks also have certain similarities, and the steps of sealing and mineralization reactions are consistent. Therefore, the sealing container 100 and sealing device 200 of this application are also suitable for the sealing and mineralization reaction research of other rocks, and will not be repeated one by one.

[0124] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0125] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as illustrative only.

[0126] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A basalt CO2 mineralization storage device, characterized in that: The sealing device comprises: At least two sealed containers, comprising a fluid input channel and a fluid output channel, wherein a basalt sample containing a fracture network is placed in the sealed container; a storage box, wherein the plurality of sealed containers are arranged in the storage box; a support frame on which the plurality of sealed containers are arranged, and the support frame is fixedly connected to the containing box; A claw clamping mechanism is provided in the storage box, the claw clamping mechanism is used to clamp the sealed container, and the claw clamping mechanism is connected to the support frame through a connecting seat; a sealing medium injection port, connected to the fluid input channel; a sealing medium output end, connected to the fluid output channel; Among them, the connecting seat is a rotating articulated base, which is arranged on the side of the support frame facing the claw clamping mechanism. The rotating articulated base is driven to rotate by a motor, and the sealing container is dynamically sealed when it rotates. The dynamic sealing can improve the mixing and mass transfer efficiency of the sealing device, promote the rate of chemical reaction, and improve the sealing efficiency.

2. The basalt CO2 mineralization storage device according to claim 1, characterized in that: The rotating articulated base includes a fixed section and a rotating section, the rotating section is configured to rotate on the fixed section, the fixed section is fixedly connected to the support frame, and the rotating section is fixedly connected to the claw clamping mechanism.

3. The basalt CO2 mineralization storage device according to claim 1, characterized in that: The sealed container comprises: A sealing tank body, wherein a sealing cavity is formed inside the sealing tank body, and a fluid input channel and a fluid output channel are provided on the sealing tank body; A sample chuck is disposed in the sealing cavity, and a sample placement groove is provided on the sample chuck, wherein the sample placement groove is used to place a basalt sample containing a fracture network; Wherein, CO2 gas, carbonic acid or sodium bicarbonate solution is injected into the sealing cavity through the fluid input channel.

4. The basalt CO2 mineralization storage device according to claim 3, characterized in that: The sealed tank comprises: The tank body is cylindrical; Sealing heads are provided on both sides of the tank body, the two sealing heads and the tank body forming the sealing cavity, one of the sealing heads is provided with the fluid input channel, the other sealing head is provided with the fluid output channel, and the fluid input channel, the sealing cavity and the fluid output channel are in communication; The screw cap is arranged on a side of the sealing head away from the sealing cavity.

5. The basalt CO2 mineralization storage device according to claim 4, characterized in that: A temperature sensor and a pressure sensor are provided in the fluid input channel.

6. The basalt CO2 mineralization storage device according to claim 4, characterized in that: A Y-ring sealing groove and an O-ring sealing groove are provided on the side of the sealing head facing the tank body, and the Y-ring sealing groove is arranged close to the sealing cavity.

7. The basalt CO2 mineralization storage device according to claim 4, characterized in that: An axle seat is provided on the inner wall of the tank body, a connecting shaft is provided in the axle seat, the connecting shaft is connected to one end of the sample chuck, and the other end of the sample chuck is connected to one side of the sealing head facing the sealing cavity.

8. The basalt CO2 mineralization storage device according to claim 3, characterized in that: The sample chuck is provided with an elastic sheet, one end of which is fixedly connected to the edge of the sample placement groove, and the other end of which is located above the basalt sample containing the fracture network.

9. A basalt CO2 mineralization storage method, using the storage device according to claim 1, characterized in that: The sealing method comprises the following steps: Preparation of basalt samples containing fracture networks; and placing the basalt sample containing the fracture network into a sealed container; Check the sealing of sealed containers; According to the storage plan, determine the series or parallel connection of the storage devices, the storage environment and the storage mode, and conduct mineralization storage tests; During the mineralization sealing test or after the mineralization sealing test, extracting the sealing solution and / or extracting the basalt sample according to the sealing plan, and analyzing the mineralization reaction; Wherein, preparing the basalt sample containing the fracture network comprises: Crushing and ball-milling basalt, and screening to obtain basalt particles; preparing a carrier plate and cleaning the carrier plate; Applying glue on the carrier to form a glue layer, and covering the basalt particles on the glue layer; The basalt particles covering the adhesive layer are subjected to a seam treatment.

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