Basalt CO2 mineralization sealing container, sealing device and sealing method

Abstract

The invention discloses a basalt CO2 mineralization sealing container, a sealing device and a sealing method. The sealing and storing container comprises a sealing and storing tank body, a sealing and storing cavity is formed in the sealing and storing tank body, and a fluid input channel and a fluid output channel are formed in the sealing and storing tank body; the sample chuck is arranged in the sealing cavity, a sample placing groove is formed in the sample chuck, and the sample placing groove is used for placing a basalt sample containing a crack network; cO2 gas, carbonic acid or a sodium bicarbonate solution is injected into the sealing cavity through the fluid input channel. The mineralization sealing container is easy to operate and high in repeatability, and crack networks of different forms can be designed in a similar simulation mode.

Description

Technical Field

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

[0002] The process of storing CO2 by basalt mineralization refers to injecting the captured CO2 into basalt formations rich in calcium, iron and magnesium. 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 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 comprehensively analyze the impact of pores and cracks on the mineralization storage effect. In addition, although the sample preparation methods such as slicing of natural rocks, artificial grooving, 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, in order to increase the reaction rate and promote the mixing of multiphase fluids, conventional methods used in mineralization storage devices are vibration, magnetic stirring, stirring paddles, etc. Although the above methods can enhance the mass transfer efficiency, they will also cause a certain degree of wear and tear on the stored samples, thereby confusing the law of sample particle size changes before and after the reaction, and unable to accurately clarify the effect of the mineralization reaction. Common systems are all single storage modes, such as static storage systems. Such storage modes can neither meet the conditions of similar simulation of diversified storage environments, nor realize 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 storage device and a sealing method, wherein the mineralization storage container is simple to operate and can obtain the mineralization reaction effect. At the same time, it 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 arranged in the sealing cavity, and a sample placement groove is provided on the sample chuck, and 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 sealing tank comprises:

[0012] The tank body is cylindrical;

[0013] Sealing heads are arranged on both sides of the tank body, and the two sealing heads and the tank body form the sealing cavity, wherein one of the sealing heads is provided with the fluid input channel, and 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] A screw pressure nut 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 arranged 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 one side of one of the sealing heads facing the sealing cavity.

[0018] Optionally, a spring sheet is provided on the sample chuck, one end of the spring sheet is fixedly connected to the edge of the sample placement groove, and the other end of the spring sheet 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 above-mentioned sealing containers, including a fluid input channel and a fluid output channel, wherein a basalt sample containing a fracture network is arranged in the mineralized sealing 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, disposed in the containing box, the claw clamping mechanism is used to clamp the mineralized storage container, and the claw clamping mechanism is connected to the support frame via a connecting seat;

[0024] A sealing medium injection end, 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, and the rotating articulated base includes a fixed section and a rotating section, and 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] The third aspect of the present invention provides a basalt CO2 mineralization storage method, using the above-mentioned storage device, the storage method comprises 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 tightness of sealed containers;

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

[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] Apply glue on the carrier to form a glue layer, and cover the basalt particles on the glue layer;

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

[0038] The embodiment of the present invention provides a basalt CO2 mineralization sealing container, sealing device and sealing method, wherein the sealing container includes a sealing tank body and a sample chuck arranged inside the sealing tank body, a basalt sample containing a fracture network is placed in a sample placement slot of the sample chuck, the sealing tank body forms a sealing cavity, and a fluid input channel and a fluid output channel are also provided on the sealing tank body, and CO2, CO2 and water or sodium bicarbonate solution are input into the sealing cavity through the fluid input channel. The mineralization sealing of CO2 achieved by the basalt sample containing a fracture network is simple to operate, the sample chuck can be used repeatedly, and the repeatability is strong; multiple sample placement slots can be arranged on the sample chuck, and fracture networks of different forms can be similarly simulated and designed.

[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 A schematic diagram of a sealing container according to an embodiment of the present invention;

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

[0043] Figure 3a A schematic diagram of a first basalt sample according to an 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 A schematic diagram of a basalt sample containing a fracture tip according to an embodiment of the present invention;

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

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

[0050] Figure 7 The present invention is a flowchart of the steps of 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 the component names is as follows:

[0052] 100 sealing container, 101 fluid input channel, 102 fluid output channel, 103 sealing cavity, 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 supporting 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0054] Before further describing the embodiments of the present invention in detail, the directional nouns 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 protection scope 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 A schematic diagram of a sealing container according to an embodiment of the present invention;

[0057] like Figure 1 As shown, one embodiment of the present invention provides a basalt CO2 mineralization storage container, and 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] A sample chuck 106 is disposed in the sealing cavity 103. A sample placement groove 113 is provided on the sample chuck 106. The sample placement groove 113 is used to place 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 inside the sealing tank body. A basalt sample 114 containing a fracture network is placed in a sample placement slot 113 of the sample chuck 106. The sealing tank body forms a sealing cavity 103. A fluid input channel 101 and a fluid output channel 102 are also provided on the sealing tank body. CO2, CO2 and water or sodium bicarbonate solution are input into the sealing cavity 103 through the fluid input channel 101. The mineralization sealing of CO2 achieved by the basalt sample 114 containing a fracture network is simple to operate, and the sample chuck 106 can be used repeatedly with strong repeatability; a plurality of sample placement slots 113 can be provided on the sample chuck 106, and fracture networks of different forms can be similarly simulated and designed.

[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] Among them, after the sealing test is carried out for a certain period of time (the sealing test continues), part of the sealing fluid can be extracted through the fluid output channel 102 to analyze the physical and chemical properties of the sealing fluid, which is helpful to help study the interaction between the sealing fluid and the basalt sample 114, such as mineral dissolution, precipitation and chemical reaction. When the composition, pH value and dissolved substance concentration of the extracted sealing fluid change with the sealing fluid before entering the sealing chamber 103, it means that the chemical reaction inside the basalt sample 114 has begun. In other words, the sealing fluid is extracted through the fluid output channel 102 to analyze the changes of the sealing fluid during the sealing test, such as the sealing fluid composition, pressure change and mineral dissolution, which helps to understand the chemical and physical processes during the sealing test. At the end of the sealing test, the sealing fluid can be extracted again to verify the sealing effect. That is to say, extracting the sealing fluid after the test can verify the sealing quality and sealing effectiveness of the basalt sample 114.

[0064] It should be noted that during the sealing test, it is not necessary to completely release the pressure at the beginning. Generally, a small part of the 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 increase in pressure 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 implementation manner, the sealed tank includes:

[0066] The tank body 112 is cylindrical;

[0067] The sealing heads 108 are arranged on both sides of the tank body 112. The two sealing heads 108 and the tank body 112 form a sealing cavity 103. One of the sealing heads 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 connected;

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

[0069] The sealing chamber 103 is formed by the cylindrical tank body 112 and the sealing heads 108 at both ends of the tank body 112. The sealing chamber 103 is used to place the basalt sample 114 containing the fracture network and the sealing fluid. After the sealing head 108 seals the tube body, it is compressed by the screw cap 109. By removing the left sealing head 108 and the screw cap 109 of the sealed container, the sealing chamber 103 can be cleaned to facilitate the next test; at the same time, by removing the left sealing head 108 and the screw cap 109, the sample chuck 106 can also be installed in the sealing chamber 103, and the connecting shaft 105 is clamped in the end groove of the sample chuck 106 to achieve the fixation 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 rotation force of the screw pressure cap 109, and the sealing head 108 can be fixed, and at the same time, pressure support can be provided 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 pressure cap 109 can close 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 pressure 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 applied 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 pressure cap 109 and the sealing head 108 can jointly withstand this pressure, which can avoid the sealing failure caused by the internal pressure of the sealed tank body, thereby ensuring 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 pressure 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 also has a corrosion-resistant effect. 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 316 stainless steel can be selected to meet the high temperature, high pressure and corrosive test environment. At the same time, by increasing the thickness of the sealing tank body and forming the sealing tank body in one piece to avoid the presence of welding interfaces, the high pressure, high temperature and corrosion resistance of the sealing tank body can be further improved, thereby ensuring the reliability and safety of the sealing container 100 for the sealing test.

[0072] In a feasible implementation manner, 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 arranged at the sealing fluid inlet of the fluid input channel 101, so as to timely monitor 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 in 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 in the sealing container 100 are monitored in order to achieve the set test pressure and test temperature, and at the same time, the sealing effectiveness of the sealing container 100 can be verified. During the sealing test, it is also necessary to monitor the pressure and temperature changes in the sealing container 100. In the sealed sealing chamber 103, if a mineralization reaction occurs, the temperature and pressure in the sealing chamber 103 will fluctuate. These fluctuations provide multiple advantages for subsequent research and analysis: it helps to understand the kinetics and thermodynamic equilibrium of the mineralization reaction; it can help evaluate the stability and sealing efficiency of the sealing container 100; it provides test data simulating real geological conditions; it determines the optimal conditions for the mineralization reaction; it understands the interaction between the mineral (basalt sample 114) and the sealing fluid and the phase change behavior of the sealing fluid.

[0075] In a feasible implementation manner, a Y-ring sealing groove 110 and an O-ring sealing groove 111 are provided on one 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 need to 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 arranged in the Y-shaped sealing groove 110, and an O-shaped sealing ring is arranged 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 a dynamic sealing environment. The design of the Y-shaped sealing ring enables it to generate additional sealing force under 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, under the action of pressure, relies on its own elastic deformation to fill the sealing groove 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 under both dynamic and static conditions, and the double sealing can extend the service life of the seal. Among them, the Y-shaped sealing ring is arranged 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 is used as a supplementary seal of the Y-shaped sealing ring to improve the reliability of the sealing.

[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 inside 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] A shaft seat 104 is provided on the inner wall of the tank body 112, and a connecting shaft 105 is provided on the shaft seat 104. The connecting shaft 105 is clamped in the end groove of the sample chuck 106 to fix the sample chuck 106. The end of the sample chuck 106 away from the connecting shaft 105 is plugged into the sealing head 108. 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, and the shaft seat 104 and the connecting shaft 105 are arranged near 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 arranged 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 two groups of sample chucks 106 are used in this embodiment, and multiple sample placement slots 113 are set on each sample chuck 106, so that sealing tests can be carried out on basalt samples with multiple different crack networks at the same time. The setting of the separated sample placement slots 113 is convenient for studying the sealing effects of different crack networks under the same sealing environment. Three, four or even more sample chucks 106 can also be set, and they can be selected according to the volume of the sealing cavity 103 and the test requirements. Multiple sample chucks 106 can be circumferentially distributed in the cylindrical body of the sealing cavity 103, that is, the shaft seat 104 and the connecting shaft 105 are set on the circumference of 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 when the sealing container 100 rotates, and ensure the stability of the basalt sample 114 containing the fracture network in the sample placement groove 113.

[0082] Figure 2 FIG. 4 is a schematic diagram of a sample chuck according to an embodiment of the present invention.

[0083] In a 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 the 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 a crack network. The elastic force of the spring clip 107 presses the surface of the basalt sample 114 containing a crack network to ensure that the basalt sample 114 containing a crack network can be stably placed in the sample placement groove 113. Even if the sealing container 100 rotates and shakes, the basalt sample 114 containing a 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, the storage device 200 comprising:

[0088] At least two of the above-mentioned sealing containers 100, including a fluid input channel 101 and a fluid output channel 102, wherein a basalt sample 114 containing a fracture network is disposed in the mineralized sealing container 100;

[0089] A containing box 210, wherein a plurality of mineralized sealing containers 100 are disposed in the containing box 210;

[0090] A support frame 220, on which a plurality of sealed containers 100 are disposed, and the support frame 220 is fixedly connected to the containing box 210;

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

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

[0093] The sealing medium output end 260 is communicated 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 fixing of the sealing containers 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 set up with an integrated sealing mode design integrating dry method, wet method, static method and dynamic method, breaking through the single operation mode of the conventional sealing device 200, so as to adapt to a variety of sealing simulation environments and factor comparison analysis, and obtain rich and comprehensive sealing test results; the integration of multiple sealing containers 100 and the coupling of multiple sealing temperature realization 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 containing box 210; when multiple sealed containers 100 are required to be tested at different temperatures, an additional insulation module can be set on the outer wall of each sealed container 100, and the insulation module includes a heating belt and an insulation sleeve arranged outside the heating belt. The insulation module is placed outside the sealed container 100, and the heating belt is controlled by an independent temperature controller, so that each sealed container 100 can be tested at different temperatures to study the sealing quality at different temperatures. Performing sealing tests at multiple different temperatures at the same time can reduce the time cost of the sealing test and improve the test efficiency.

[0095] Specifically, the container 210 serves as a carrier of the sealing container 100, provides a storage space for multiple sealing containers 100, and is used to centralize pipelines, fix the sealing containers 100, and install valves. The container 210 has a certain pressure bearing capacity and is resistant to high temperatures. The pressure bearing capacity is selected to be above 8MPa. The temperature range is determined by the heat medium injected into the container 210. Usually, both ends of the container 210 are connected to the circulation pump and the heat exchanger through pipelines, so that the heat medium is injected into the container 210, which can realize the sealing effect study of different fracture networks in multiple sealing devices 100 at the same temperature. Among them, the heat medium can be selected from deionized water or heat transfer oil to achieve balance in different temperature zones.

[0096] From the above, it can be seen that the temperature balance uses the temperature of the sealing environment in multiple sealing containers 100 to be the same and stable. If the influence of the temperature environment of different sealing tests on the sealing effect is simulated similarly, there is no need to inject heat medium into the containing box 210, but only 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 can be 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 realize the strategic and planned injection of the sealing medium into the sealing cavity 103, which can simulate the intermittent injection and continuous injection modes of the on-site formation; the sealing medium output end 260 can be used to extract the sealing medium in the corresponding sealing cavity 103, which can facilitate the detection and analysis of the ion concentration, mineralization degree, element content and other parameters of the sealing medium, and can also be used for pressure balance and release in the sealing cavity 103. It can be understood that before the sealing test, the parameters such as ion concentration, mineralization degree, element content and the like of the sealing medium should be tested, so as to compare with the parameters of the sealing medium extracted in the test and the sealing medium obtained after the test, so as to realize the study of the sealing test process.

[0098] It is understandable that, since the multiple sealing medium injection ends 250 and the multiple sealing medium output ends 260 are connected in parallel, the sealing medium can be input and extracted into different sealing containers 100. In this embodiment, three sealing containers 100 are used, and two, four or more sealing containers 100 can also be used. The number of sealing containers 100 in the sealing device 200 can be selected according to the test 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 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 mechanical 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 arranged on the side of the claw clamping mechanism 230 facing the sealed container 100, and a plurality of convex point structures or curved surface structures are arranged 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 snap connections. The rotating section and the fixed section can be driven by a motor to rotate, 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 position.

[0101] It should be noted that the setting of the sealing device 200 can not only fix the sealing container 100, but also rotate the sealing container 100 when it needs to be rotated. The two working modes correspond to static sealing and dynamic sealing respectively. It can be understood that static sealing obtains 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, but static sealing is simple 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, avoid CO2 accumulation at the top of the sealing container 100, promote the rate of chemical reactions, and improve the sealing efficiency.

[0102] Among them, the sealing mode includes dry sealing and wet sealing, and the difference between the two is whether water is involved as a reaction medium. If the sealing medium injection end 250 only injects a certain pressure of CO2 into the sealing container 100, it is a dry sealing mode; if the sealing medium injection end 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 matched with a static or dynamic sealing mode to analyze the impact of the state change of the sealing container 100 on the sealing reaction rate and mineralization effect.

[0103] Exemplarily, in the static sealing mode, the temperature and pressure in the sealing container 100 are usually stable, the sealing medium (CO2) is dissolved in water or sodium bicarbonate solution, and gradually reacts with the basalt sample 114 containing the fracture network to generate carbonate minerals (such as calcite). At this time, the reaction rate is slow because the dissolved CO2 gradually diffuses and contacts the basalt sample 114 containing the fracture network, and the reaction area is limited. At the same time, in the static sealing mode, the mineralization reaction is mainly affected by the temperature, pressure and the contact area between the solution and the surface of the basalt sample 114, and the reaction is relatively slow, which is suitable for analyzing the mineralization reaction during long-term sealing.

[0104] Exemplarily, in the dynamic sealing mode, the sealing medium (CO2) will circulate or flow in the sealing container 100. The flowing sealing medium can bring higher mass transfer efficiency, allowing CO2 to diffuse faster to the surface of the basalt sample 114 containing the fracture network, thereby increasing the reaction rate between the basalt sample 114 and CO2. At the same time, in the dynamic sealing mode, the circulation of the sealing medium will continuously bring new CO2 into contact with the basalt sample 114, promoting the reaction. The flow of the sealing medium also helps the movement of mineral precipitates (such as carbonates), preventing the precipitates from blocking the reaction surface of the basalt sample 114, making the mineralization reaction more in-depth.

[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 selects the static sealing mode because the dry sealing mode does not need to extract 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 present invention 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 property of the sealed container;

[0111] Step 4: According to the storage plan, determine the series or parallel connection, storage environment and storage mode of the storage device, 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] Among them, in step 2, the basalt sample 114 containing the fracture network is placed in the sample placement groove 113 of the sealing container 100, and after being pressed 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, that is, 2MPaCO2 is injected into the sealing container 100 to test the sealing of the sealing container 100; when there is a hot medium in the containing box 210, and cavitation occurs in the hot medium, the sealing of the sealing container 100 is unqualified, and when no hot medium is set in the sealing box 210, it can be monitored by the pressure sensor at the sealing medium injection end 250. When the pressure of the pressure sensor drops, the sealing of the sealing container 100 is unqualified. In step 4, after the sealing test is qualified, the test gas therein is emptied, and the sealing containers 100 are determined to be connected in parallel or in series according to the sealing plan, wherein 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 respectively opened 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 analyze the effect of the mineralization reaction. It should be noted that when taking out the basalt sample 114 containing the fracture network, the sealing container 100 should be emptied and depressurized, and then the sealing head 108 and the screw cap 109 on one side should be opened to take out 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 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 obtained: the mineralization reaction can be accelerated under high temperature and high pressure conditions to improve the sealing efficiency; the wet sealing mode, due to the good fluidity of the sealing medium, the mineralization reaction efficiency of the wet sealing mode is better than that of the dry sealing mode; the dynamic sealing mode increases the fluidity of the sealing medium, so it 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 present invention is a flowchart of the steps of preparing a basalt sample according to one embodiment of the present invention.

[0116] like Figure 7 As shown, in one feasible 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, preparing a carrier plate and cleaning the carrier plate;

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

[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 is prepared to place the screened basalt particles 116. The material of the carrier can be flexibly selected according to the environment of the sealing chamber 103. The material of the carrier 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 corrosion 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, while 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 spring clip 107, that is, the size of the sample placement groove is slightly larger than the size of the carrier plate of the basalt sample 114, and the basalt sample 114 is fixed by the spring clip 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, the glue can be shadowless glue or epoxy resin. Usually, thin coating means that the thickness of the glue is 0.01mm to 0.1mm, which can ensure a 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 the glue is completed, it is flattened by a scraper. 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 2-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 to bond the basalt particles 116, the thickness of the basalt particles 116 covering the inverted carrier can be achieved 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 real 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 in line with the actual situation. The covering layer of the basalt particles 116 is subjected to seam treatment, such as by using tools (blade, needle and / or fine drill, etc.) to carve cracks on the covered basalt particles 116 to form a fracture network matching the actual one, forming a chopstick-shaped fracture network 1151 (such as. Figure 3a As shown), fence-like crack network 1152 (as shown Figure 3b As shown), fishbone crack network 1153 (as shown Figure 3c As shown), the branch-like crack network 1154 (as shown Figure 3d The crack morphology is shown in the figure, and the crack width range can be selected from 0.1mm to 0.3mm, preferably 0.2mm. The chopstick-shaped crack network 1151 is parallel and regular, which is suitable for studying how the sealing medium flows in the evenly 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 to study 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 is kept at a certain distance from the end of the carrier plate (such as Figure 4 As shown), that is, the cracks do not penetrate to the ends of the basalt particles 116 carrier plate, which can simulate the situation in actual situations where the crack network is partially closed or extends only in a specific direction, which is helpful to study the flow and reaction of the sealing medium in the incompletely open crack network; it can be understood that the crack network is not limited to the above-mentioned crack networks, and 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, wherein 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, and repeated preparation refers to the ability to manufacture a basalt sample 114 with a similar crack network structure, so as 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, and multiple basalt samples 114 can be prepared in batches; the sample here is also not limited to basalt, and shale, coal rock, tailings, serpentine and other materials with mineralization sealing characteristics can also be selected.

[0122] It is understandable that although there are tiny gaps between the basalt particles 116, these naturally formed gaps cannot form a complex, controllable fracture network structure. The artificial means of fracture treatment can help control the shape, size and distribution of the fracture network, so that the basalt sample 114 can be similar to the actual fracture network, and then the behavior of the permeability and mineralization reaction of the sealing medium in the fracture network can be accurately studied. In this embodiment, basalt is selected as the test sample because basalt is rich in components that can react with CO2 to form carbonate minerals (such as olivine and pyroxene), which is suitable for mineralization sealing experiments; at the same time, basalt has high permeability, that is, natural fractures and voids, which is convenient for simulating the permeability behavior of the sealing medium in the rock; basalt is also a rock with high hardness and stability, and is also suitable for the 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 head in low permeability bottom layers. Coal rock contains natural micropores and cracks, which are suitable for studying the adsorption and storage behavior of gas in micropores, and are particularly suitable for methane and CO2 storage research. Tailings contain rich mineral components, which are suitable for studying the resource utilization of minerals in waste and mineralization storage. Serpentine has good mineralization reaction ability, which is suitable for the study of rapid CO2 storage and 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 is mainly explained using basalt sample 114 as an example, 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 the 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] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing 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 present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only.

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

Claims

1. A basalt CO2 mineralization storage container, characterized in that: The sealing 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 arranged in the sealing cavity, and a sample placement groove is provided on the sample chuck, and 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.

2. The basalt CO2 mineralization storage container according to claim 1, characterized in that: The sealed tank comprises: The tank body is cylindrical; Sealing heads are arranged on both sides of the tank body, and the two sealing heads and the tank body form the sealing cavity, wherein one of the sealing heads is provided with the fluid input channel, and 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; A screw pressure nut is arranged on a side of the sealing head away from the sealing cavity.

3. The basalt CO2 mineralization storage container according to claim 2, characterized in that: A temperature sensor and a pressure sensor are arranged in the fluid input channel.

4. The basalt CO2 mineralization storage container according to claim 2, characterized in that: A Y-ring sealing groove and an O-ring sealing groove are provided on one side of the sealing head facing the tank body, and the Y-ring sealing groove is arranged close to the sealing cavity.

5. The basalt CO2 mineralization storage container according to claim 2, 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 one of the sealing heads facing the sealing cavity.

6. The basalt CO2 mineralization storage container according to claim 1, 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.

7. A basalt CO2 mineralization storage device, characterized in that: The sealing device comprises: At least two storage containers according to any one of claims 1 to 6, comprising a fluid input channel and a fluid output channel, wherein a basalt sample containing a fracture network is arranged in the mineralized storage container; A containing box, wherein a plurality of the mineralized sealing containers are arranged in the containing 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, disposed in the containing box, the claw clamping mechanism is used to clamp the mineralized storage container, and the claw clamping mechanism is connected to the support frame via a connecting seat; A sealing medium injection end, connected to the fluid input channel; The sealing medium output end is communicated with the fluid output channel.

8. The basalt CO2 mineralization storage device according to claim 7, characterized in that: 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.

9. A basalt CO2 mineralization storage method, using the storage device according to claim 6 or 7, 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 tightness of sealed containers; According to the storage plan, determine the series or parallel connection, storage environment and storage mode of the storage device, and conduct mineralization storage test; 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.

10. The basalt CO2 mineralization storage method according to claim 9, characterized in that: The preparation of 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; Apply glue on the carrier to form a glue layer, and cover the basalt particles on the glue layer; The basalt particles covering the adhesive layer are subjected to seam treatment.

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