Monitoring device and monitoring method for carbon dioxide mineralization reaction process

Abstract

The invention discloses a monitoring device and a monitoring method for a carbon dioxide mineralization reaction process, belongs to the technical field of carbon dioxide mineralization and storage, and solves the problem that reaction conditions cannot be set and a reaction process cannot be monitored when a mineralization reaction is researched in the prior art. The device specifically comprises a high-temperature heating stage, the high-temperature heating stage is installed on an objective table of a metallographic microscope, and a rock mass sample is placed in the high-temperature heating stage; the high-temperature heating stage is connected with the biaxial loading control system, and the biaxial loading control system controls the high-temperature heating stage to apply stress to the rock mass sample; the gas source system is connected with the high-temperature heating stage and is used for introducing gas into the high-temperature heating stage; the temperature control and image acquisition system is connected with the high-temperature heating stage and used for controlling the temperature of the high-temperature heating stage. According to the invention, the rock mass sample can directly react in the high-temperature heating stage, and an operator can observe the reaction process through a metallographic microscope so as to monitor the distribution form and structural characteristics of mineralized substances in the mineralization reaction in real time and analyze factors affecting mineralization storage.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide mineralization and storage, and in particular to a monitoring device and a monitoring method for a carbon dioxide mineralization reaction process. Background Art

[0002] Due to the large-scale exploitation and use of fossil fuels such as coal and oil, large amounts of carbon dioxide emissions have induced ecological and environmental problems such as climate variability and global warming. Therefore, how to achieve carbon dioxide emission reduction has become the key to responding to climate change and solving the problem of global warming. Carbon capture and storage (CCS) is currently the most economically valuable and promising "decarbonization technology" in the world. This technology captures carbon dioxide produced by high-carbon emission industries and injects it into deep formations or abandoned oil, gas, and coal fields for storage. Among them, converting carbon dioxide into solid minerals is the safest storage mechanism with the lowest risk of leakage. The process of carbon dioxide mineral storage technology is short in time, low in energy consumption, and has abundant raw material sources and large reserves. It is considered to be the storage technology with the greatest potential and application prospects for large-scale carbon storage.

[0003] When studying the mechanism of mineralization reaction, it is necessary to observe the actual reaction process of carbon dioxide and rock mass, but the mineralization reaction rate in nature is very slow, so it is difficult to study the mechanism of the mineralization reaction process, so it is necessary to artificially change the environmental conditions to speed up the mineralization reaction. At present, the main controlling factors that restrict the mineralization reaction rate are still unclear, and the efficient mineralization driving mechanism is still unclear. It is impossible to control the mineralization reaction process of rocks with different structures and mineral components under the influence of factors such as temperature and pressure, so it is difficult to monitor the mineralization reaction process under specific conditions. Therefore, the present invention provides a device that is convenient for setting mineralization reaction conditions and monitoring the reaction process. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a monitoring device and a monitoring method for a carbon dioxide mineralization reaction process, which solves the problem in the prior art that it is impossible to artificially set reaction conditions and monitor the reaction process when studying the mineralization reaction.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A monitoring device for a carbon dioxide mineralization reaction process, comprising a metallographic microscope, a biaxial loading control system, a temperature control and image acquisition system, a circulating cooling system and a gas source system; A high-temperature hot stage is installed on the stage of the metallographic microscope, and a rock sample is placed in the high-temperature hot stage; the high-temperature hot stage is connected to a biaxial loading control system, and the biaxial loading control system controls the high-temperature hot stage to apply stress to the rock sample; a gas source system is connected to the high-temperature hot stage and is used to introduce gas into the high-temperature hot stage; a temperature control and image acquisition system is connected to the high-temperature hot stage and is used to control the temperature of the high-temperature hot stage; and a circulating cooling system is connected to the high-temperature hot stage.

[0006] In this scheme, when the mineralization reaction is carried out, the rock sample is directly placed inside the high-temperature hot stage, and the reaction gas is introduced into the high-temperature hot stage by the gas source system. The temperature of the high-temperature hot stage is then controlled by the temperature control and image acquisition system, so that the rock sample can react directly inside the high-temperature hot stage. The operator can observe the reaction process through a metallographic microscope to monitor the distribution morphology and structural characteristics of the mineralized material during the mineralization reaction in real time, analyze the key mineral components that affect the mineralization and sealing, and realize the monitoring of the mineralization reaction under the set reaction conditions.

[0007] Furthermore, the high temperature hot stage comprises a high temperature stage, which is fixed on the stage; a sample chamber is arranged inside the high temperature stage, and the rock sample is placed in the sample chamber; a strength baffle is arranged around the sample chamber; a heat-sealed cover is installed on the top of the high temperature stage, and an observation glass is arranged in the middle of the heat-sealed cover; Four reciprocating electric cylinders are fixed around the high temperature table. The telescopic ends of the four reciprocating electric cylinders pass through the sample chamber and are respectively connected to four sample clamps. The rock sample is clamped between the four sample clamps. The four reciprocating electric cylinders are all connected to the dual-axis loading control system.

[0008] In this scheme, the dual-axis loading control system controls the reciprocating electric cylinder to apply different amounts of stress to the rock sample to control the pressure on the rock sample during the mineralization reaction; the rock reacts on a high-temperature table, and the reaction process can be directly observed through the observation glass.

[0009] Furthermore, two gas source interfaces are provided on the side wall of the high temperature platform, one end of the two gas source interfaces is communicated with the inner cavity of the high temperature platform, and the other end of the two gas source interfaces is connected to the gas source system.

[0010] Furthermore, the gas source system includes an inert gas source and a carbon dioxide gas source, which are respectively connected to two gas source interfaces through a first gas pipeline and a second gas pipeline, and both the first gas pipeline and the second gas pipeline are provided with an electrically controlled valve and a flow meter; the electrically controlled valve and the flow meter are both connected to the dual-axis loading control system.

[0011] In this scheme, an inert gas source and a carbon dioxide gas source are connected to two gas source interfaces respectively. In the early preparation stage, the inert gas can be used to protect the rock sample to prevent it from reacting prematurely. After the metallographic microscope has completed focusing and the temperature has reached the set temperature, carbon dioxide is introduced for reaction to ensure that the entire reaction process can be monitored.

[0012] Furthermore, a ring-shaped resistance wire is provided at the bottom of the sample chamber, and the two ends of the resistance wire are respectively connected to two resistance wire power sockets provided on the side wall of the high temperature stage, and the two resistance wire power sockets are electrically connected to the image acquisition system through a wiring harness and temperature control; A thermocouple temperature sensor is also provided at the bottom of the sample chamber, and a temperature sensing probe of the thermocouple temperature sensor is inserted into the sample chamber; the thermocouple temperature sensor is connected to a thermocouple socket provided on the side wall of the high temperature stage; the thermocouple socket is electrically connected to the image acquisition system through a wiring harness and temperature control.

[0013] In this scheme, the temperature control and image acquisition system controls the resistance wire to heat the sample chamber; the thermocouple temperature sensor detects the real-time temperature of the sample chamber in real time, and controls whether the resistance wire continues to heat the sample chamber according to the real-time temperature, so that the sample chamber meets the specific temperature conditions of the mineralization reaction.

[0014] Furthermore, a water inlet pipe and a water outlet pipe are provided in the high temperature table, and one end of the water inlet pipe and the water outlet pipe are connected through a circulation pipe; the other end of the water inlet pipe and the water outlet pipe are connected to the circulation cooling system.

[0015] In this solution, the cooling water of the circulating cooling system flows through the water inlet pipe, the circulating pipe and the water outlet pipe in sequence to complete the cooling of the high-temperature stage; the temperature of the high-temperature stage is controlled by cooling water, which can prevent the heat of the sample chamber from being transferred to the high-temperature stage after the resistance wire heats the sample chamber, causing the high-temperature stage to be overheated and damage the metallographic microscope; at the same time, when the temperature of the sample chamber exceeds the mineralization reaction temperature, the cooling water can be used to quickly cool the sample chamber to meet the mineralization reaction temperature.

[0016] Furthermore, the temperature control and image acquisition system is electrically connected to the camera on the metallographic microscope.

[0017] In this scheme, the temperature control and image acquisition system can collect the process of mineralization reaction recorded by the camera, which is convenient for analysis and research after the experiment.

[0018] In a second aspect, the present invention provides a monitoring method for a carbon dioxide mineralization reaction process based on a monitoring device for a carbon dioxide mineralization reaction process provided in the first aspect, comprising the following steps: S1: Prepare rock samples and place them in the sample chamber of the high-temperature hot stage; clamp and fix the rock samples using four return electric cylinders; S2: placing the high-temperature hot stage with the rock sample on the stage of the metallographic microscope, and focusing the metallographic microscope; after focusing, fixing the high-temperature hot stage; S3: The dual-axis loading control system controls the electric control valve on the first gas pipeline to open, and passes the inert gas into the high-temperature stage; the temperature control and image acquisition system controls the resistance wire to heat the sample chamber; S4: During the heating process, the temperature control and image acquisition system collects the real-time temperature of the sample chamber detected by the thermocouple temperature sensor; If the real-time temperature reaches the preset reaction temperature, the electric control valve on the first gas pipeline is closed and the electric control valve on the second gas pipeline is opened through the dual-axis loading control system to pass carbon dioxide into the high-temperature platform; S5: The dual-axis loading control system controls four reciprocating electric cylinders to apply stress to the rock sample; S6: The temperature control and image acquisition system collects images captured by the camera during the reaction between rock samples and carbon dioxide.

[0019] In this scheme, before the mineralization reaction, inert gas is used to protect the rock sample; after the temperature reaches the reaction temperature, carbon dioxide gas is introduced to allow the rock sample to fully react with carbon dioxide. The reaction time of the rock sample and carbon dioxide can be precisely controlled to ensure that the mineralization reaction is carried out under the set conditions, providing a guarantee for the study of the reaction mechanism.

[0020] The beneficial effects of the present invention are: When the monitoring device for the carbon dioxide mineralization reaction process provided by the present invention is used, the rock sample is placed in a high-temperature hot stage, and then the high-temperature hot stage is placed on the stage of a metallographic microscope; when the rock sample reacts with carbon dioxide, the mineralization reaction process can be directly observed through the metallographic microscope to study the mechanism of the mineralization reaction. The high-temperature hot stage is designed with a resistance wire and a return electric cylinder, the temperature control and image acquisition system controls the resistance wire to heat the sample chamber, and the biaxial loading control system controls the return electric cylinder to apply stress to the rock sample to control the conditions of the mineralization reaction; when replacing the rock sample, open the heat-sealed cover and replace it directly; it can not only simulate the mineralization reaction process of rock samples with different structures and mineral components under the influence of set temperature and pressure factors, but also observe the distribution morphology and structural characteristics of mineralized materials in real time, and then analyze the key mineral components that affect mineralization and storage, laying a foundation for studying the mechanism of carbon dioxide mineralization and enhancing the industrial application of mineralization and storage.

[0021] In the monitoring method for the carbon dioxide mineralization reaction process provided by the present invention, an inert gas is used to protect the rock sample before the temperature reaches the set temperature; after the reaction temperature reaches the set temperature, the inert gas is replaced with carbon dioxide gas to allow the rock sample to start reacting with the carbon dioxide; ensuring that the mineralization reaction is carried out under the set conditions, so as to facilitate real-time observation of the entire reaction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a monitoring device for a carbon dioxide mineralization reaction process according to the present invention; Figure 2 A top view of the high temperature heating platform of the present invention; Figure 3 for Figure 2 Sectional view of the AA section; Figure 4 It is a schematic diagram of the structure of the gas source system in the present invention; Figure 5 It is a schematic diagram of the assembly structure of the metallographic microscope and the high-temperature heating stage in the present invention.

[0023] Reference numerals: 1. Metallographic microscope; 101. Camera; 102. Eyepiece; 103. Filter wheel; 104. Converter; 105. Objective lens; 106. Stage; 107. Brightness adjustment knob; 108. Coarse and fine focusing hand wheel; 2. Dual-axis loading control system; 3. Temperature control and image acquisition system; 4. Circulating cooling system; 5. High-temperature hot stage; 501. High-temperature stage; 502. Thermocouple temperature sensor; 503. Water outlet pipe; 504 , water inlet pipeline; 505, gas source interface; 506, circulation pipeline; 507, strength baffle; 508, sample fixture; 509, return electric cylinder; 510, sample chamber; 511, observation glass; 512, heat-sealed cover; 513, resistance wire; 514, thermocouple socket; 515, resistance wire power socket; 6, gas source system; 601, inert gas source; 602, carbon dioxide gas source; 603, electric control valve; 604, flow meter; DETAILED DESCRIPTION The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. The specific implementation of the present invention is described below to facilitate the understanding of the present invention by those skilled in the art, but it should be clear that the present invention is not limited to the scope of the specific implementation. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the attached claims, these changes are obvious, and all inventions and creations using the concept of the present invention are protected.

[0024] Example 1 like Figure 1As shown, this embodiment provides a monitoring device for the carbon dioxide mineralization reaction process, which realizes the mineralization reaction under specific temperature and pressure conditions and observes the changes in the distribution form and structural characteristics of the mineralized substance during the reaction in real time; it specifically includes: Metallographic microscope 1, dual-axis loading control system 2, temperature control and image acquisition system 3, circulating cooling system 4, high-temperature heating stage 5 and gas source system 6; Among them, the high-temperature hot stage 5 is installed on the stage 106 of the metallographic microscope 1; a rock sample is placed in the high-temperature hot stage 5; the gas source system 6 is connected to the high-temperature hot stage 5, and is used to pass the reaction gas into the high-temperature hot stage 5, so that the rock sample and the reaction gas react directly in the high-temperature hot stage 5, and the operator can observe the reaction process through the metallographic microscope 1; the high-temperature hot stage 5 is connected to the biaxial loading control system 2, and the biaxial loading control system 2 controls the high-temperature hot stage 5 to apply stress to the rock sample; the temperature control and image acquisition system 3 is connected to the high-temperature hot stage 5, and is used to control the temperature of the high-temperature hot stage 5, so that the rock sample reacts at a set temperature; the circulating cooling system 4 is connected to the high-temperature hot stage 5.

[0025] The high temperature hot stage 5 includes a high temperature stage 501, a sample chamber 510, a strength baffle 507, a heat-sealed cover 512, four return-type electric cylinders 509; an observation glass 511, a sample fixture 508; a resistance wire 513, a resistance wire power socket 515, a thermocouple temperature sensor 502, a thermocouple socket 514, an air source interface 505, a water inlet pipeline 504, a water outlet pipeline 503 and a circulation pipeline 506; like Figure 2 and Figure 3 As shown, a sample chamber 510 is provided inside the high temperature platform 501, and the rock sample is placed in the sample chamber 510; the high temperature platform 501 is fixed on the stage 106; a strength baffle 507 is provided around the sample chamber 510; a heat-sealed cover 512 is installed on the top of the high temperature platform 501, and an observation glass 511 is provided in the middle of the heat-sealed cover 512; four reciprocating electric cylinders 509 are fixed around the high temperature platform 501, and the telescopic ends of the four reciprocating electric cylinders 509 penetrate the strength baffle 507 and the sample chamber 510 and are respectively connected to four sample fixtures 511. 08, the rock sample is clamped between four sample clamps 508; in this embodiment, the sample clamp 508 can be a rubber pad bonded to the telescopic end of the reciprocating electric cylinder 509; the four reciprocating electric cylinders 509 are all connected to the dual-axis loading control system 2; the dual-axis loading control system 2 controls the reciprocating electric cylinders 509 to apply different amounts of stress to the rock sample to control the pressure on the rock sample during the mineralization reaction; the rock sample reacts on the high-temperature platform 501, and the reaction process can be directly observed through the observation glass 511.

[0026] A ring-shaped resistance wire 513 is provided at the bottom of the sample chamber 510, and the two ends of the resistance wire 513 are respectively connected to two resistance wire power sockets 515 arranged on the side wall of the high temperature stage 501, and the two resistance wire power sockets 515 are electrically connected to the image acquisition system 3 through a wiring harness and temperature control; a thermocouple temperature sensor 502 is also provided at the bottom of the sample chamber 510, and the temperature sensing probe of the thermocouple temperature sensor 502 is inserted into the sample chamber 510; the thermocouple temperature sensor 502 is connected to a thermocouple socket 514 arranged on the side wall of the high temperature stage 501; the thermocouple socket 514 is electrically connected to the image acquisition system 3 through a wiring harness and temperature control. The temperature control and image acquisition system 3 control the resistance wire 513 to heat the sample chamber 510; the thermocouple temperature sensor 502 detects the temperature of the sample chamber 510 in real time and controls whether the resistance wire 513 continues to heat the sample chamber 510 according to the temperature, so that the sample chamber 510 meets the specific temperature conditions of the mineralization reaction. In this embodiment, the dual-axis loading control system 2 and the temperature control and image acquisition system 3 can both be laboratory computers.

[0027] Two gas source interfaces 505 are provided on the side wall of the high temperature stage 501. One end of the two gas source interfaces 505 is connected to the inner cavity of the high temperature stage 501, and the other end of the two gas source interfaces 505 is connected to the gas source system 6. Figure 4 As shown, the gas source system 6 includes an inert gas source 601, a carbon dioxide gas source 602, a first gas pipeline, a second gas pipeline, an electric control valve 603 and a flow meter 604; the inert gas source 601 and the carbon dioxide gas source 602 are respectively connected to the two gas source interfaces 505 through the first gas pipeline and the second gas pipeline, and the first gas pipeline and the second gas pipeline are both provided with an electric control valve 603 and a flow meter 604; the electric control valve 603 and the flow meter 604 are both connected to the biaxial loading control system 2; in the early preparation stage, the rock sample can be protected by an inert gas to prevent it from reacting prematurely; after the metallographic microscope 1 completes the focusing and the temperature reaches the set temperature, the carbon dioxide gas source 602 is introduced to react; it is ensured that the entire reaction process can be monitored. In this embodiment, the inert gas source 601 can be an argon gas bottle or a nitrogen gas bottle.

[0028] A water inlet pipe 504 and a water outlet pipe 503 are provided in the high temperature platform 501 and penetrate through the high temperature platform 501 . One end of the water inlet pipe 504 and the water outlet pipe 503 are connected through a circulation pipe 506 ; the other end of the water inlet pipe 504 and the water outlet pipe 503 are connected to the circulation cooling system 4 .

[0029] The circulating cooling system 4 includes a water tank and a water pump, and the water inlet pipe 504 is connected to the water pump; the water pump transports the cooling water in the water tank to the water inlet pipe 504, the circulating pipe 506 and the water outlet pipe 503, and then flows back to the water tank; the cooling of the high-temperature stage 501 is completed; the temperature of the high-temperature stage 501 is controlled by circulating cooling water, which can prevent the heat of the sample chamber 510 from being transferred to the high-temperature stage 501 after the resistance wire 513 heats the sample chamber 510, causing the high temperature stage 501 to be too high and damage the metallographic microscope 1; at the same time, when the temperature of the sample chamber 510 exceeds the mineralization reaction temperature, the sample chamber 510 can be quickly cooled by circulating cooling water to meet the mineralization reaction temperature.

[0030] The temperature control and image acquisition system 3 is electrically connected to the camera 101 on the metallographic microscope 1; the temperature control and image acquisition system 3 can collect the process of the mineralization reaction recorded by the camera 101, which is convenient for analysis and research after the experiment.

[0031] Example 2 like Figure 1-Figure 5 As shown, this embodiment provides a monitoring method for a carbon dioxide mineralization reaction process based on a monitoring device for a carbon dioxide mineralization reaction process provided in Example 1, comprising the following steps: S1: Prepare rock samples, select rock samples that react with carbon dioxide mineralization and storage, and cut them into test sizes; put the rock samples into the sample chamber 510 of the high-temperature hot stage 5; and clamp and fix the rock samples by four reciprocating electric cylinders 509.

[0032] S2: Place the high temperature hot stage 5 containing the rock sample on the stage 106 of the metallographic microscope 1, as shown in FIG. Figure 5 As shown; and the metallographic microscope 1 is focused; the specific operation of the focusing process is: Turn on the power switch of the metallographic microscope 1, first adjust the light source illuminator, push the analyzer pull rod into the positioning position, use the aperture diaphragm adjusting wheel and the field diaphragm adjusting wheel to open the field diaphragm and the aperture diaphragm, then turn the filter turntable 103 to neutral, turn the coarse and fine focusing hand wheel 108 to move the stage 106 to the lowest position, and loosen the limit handle to place the high-temperature hot stage 5 on the stage 106; rotate the converter 104 to replace the appropriate objective lens 105; turn on the power switch, adjust the brightness adjustment knob 107 to make the brightness suitable for the lighting needs of each magnification, observe the eyepiece 102 with your eyes, adjust the coarse and fine focusing hand wheel 108 to make the sample clear, and turn the field diaphragm adjusting wheel to ensure that the field diaphragm image is in the center of the field of view; after focusing is completed, lock the limit handle to fix the high-temperature hot stage 5.

[0033] S3: The dual-axis loading control system 2 controls the electric control valve 603 on the first gas pipeline to open, and passes the inert gas into the high-temperature stage 501 ; the temperature control and image acquisition system 3 controls the resistance wire 513 to heat the sample chamber 510 .

[0034] S4: During the heating process, the temperature control and image acquisition system 3 acquires the real-time temperature of the sample chamber 510 detected by the thermocouple temperature sensor 502; If the real-time temperature does not reach the preset reaction temperature, the temperature control and image acquisition system 3 controls the resistance wire 513 to continue heating; If the real-time temperature reaches the preset reaction temperature, the temperature control and image acquisition system 3 controls the resistance wire 513 to stop heating; and controls the electric control valve 603 on the first gas pipeline to close and the electric control valve 603 on the second gas pipeline to open through the dual-axis loading control system 2, so as to pass carbon dioxide into the high temperature stage 501.

[0035] S5: The dual-axis loading control system 2 controls the four reciprocating electric cylinders 509 to apply stress to the rock sample.

[0036] S6: The temperature control and image acquisition system 3 acquires the images captured by the camera 101 during the reaction between the rock sample and carbon dioxide.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A monitoring device for a carbon dioxide mineralization reaction process, characterized in that: It includes a metallographic microscope (1), a dual-axis loading control system (2), a temperature control and image acquisition system (3), a circulating cooling system (4) and a gas source system (6); A high-temperature hot stage (5) is installed on the stage (106) of the metallographic microscope (1), and a rock sample is placed in the high-temperature hot stage (5); the high-temperature hot stage (5) is connected to the biaxial loading control system (2), and the biaxial loading control system (2) controls the high-temperature hot stage (5) to apply stress to the rock sample; the gas source system (6) is connected to the high-temperature hot stage (5) and is used to pass gas into the high-temperature hot stage (5); the temperature control and image acquisition system (3) is connected to the high-temperature hot stage (5) and is used to control the temperature of the high-temperature hot stage (5); and the circulating cooling system (4) is connected to the high-temperature hot stage (5).

2. The monitoring device for the carbon dioxide mineralization reaction process according to claim 1, characterized in that: The high-temperature hot stage (5) comprises a high-temperature stage (501), wherein the high-temperature stage (501) is fixed on the stage (106); a sample chamber (510) is provided inside the high-temperature stage (501), wherein the rock sample is placed in the sample chamber (510); a strength baffle (507) is provided around the sample chamber (510); a heat-sealed cover (512) is installed on the top of the high-temperature stage (501), wherein an observation glass (511) is provided in the middle of the heat-sealed cover (512); Four reciprocating electric cylinders (509) are fixed around the high-temperature table (501); the telescopic ends of the four reciprocating electric cylinders (509) pass through the sample chamber (510) and are respectively connected to four sample clamps (508); the rock sample is clamped between the four sample clamps (508); and the four reciprocating electric cylinders (509) are all connected to the dual-axis loading control system (2).

3. The monitoring device for the carbon dioxide mineralization reaction process according to claim 2, characterized in that: Two gas source interfaces (505) are provided on the side wall of the high temperature table (501), one end of the two gas source interfaces (505) is in communication with the inner cavity of the high temperature table (501), and the other end of the two gas source interfaces (505) is connected to the gas source system (6).

4. The monitoring device for the carbon dioxide mineralization reaction process according to claim 3, characterized in that: The gas source system (6) comprises an inert gas source (601) and a carbon dioxide gas source (602); the inert gas source (601) and the carbon dioxide gas source (602) are connected to the two gas source interfaces (505) via a first gas pipeline and a second gas pipeline, respectively; the first gas pipeline and the second gas pipeline are both provided with an electric control valve (603) and a flow meter (604); the electric control valve (603) and the flow meter (604) are both connected to the dual-axis loading control system (2).

5. The monitoring device for the carbon dioxide mineralization reaction process according to claim 4, characterized in that: A ring-shaped resistance wire (513) is provided at the bottom of the sample chamber (510), and two ends of the resistance wire (513) are respectively connected to two resistance wire power sockets (515) provided on the side wall of the high-temperature stage (501), and the two resistance wire power sockets (515) are electrically connected to the image acquisition system (3) through a wiring harness and the temperature control; A thermocouple temperature sensor (502) is also provided at the bottom of the sample chamber (510); a temperature sensing probe of the thermocouple temperature sensor (502) is inserted into the sample chamber (510); the thermocouple temperature sensor (502) is connected to a thermocouple socket (514) provided on a side wall of the high temperature stage (501); and the thermocouple socket (514) is electrically connected to the temperature control and image acquisition system (3) through a wiring harness.

6. The monitoring device for the carbon dioxide mineralization reaction process according to claim 5, characterized in that: The high temperature table (501) is provided with a water inlet pipeline (504) and a water outlet pipeline (503) which penetrate the high temperature table (501); one end of the water inlet pipeline (504) and the water outlet pipeline (503) are connected via a circulation pipeline (506); and the other ends of the water inlet pipeline (504) and the water outlet pipeline (503) are connected to the circulation cooling system (4).

7. The monitoring device for the carbon dioxide mineralization reaction process according to claim 6, characterized in that: The temperature control and image acquisition system (3) is electrically connected to the camera (101) on the metallographic microscope (1).

8. A monitoring method for a monitoring device for a carbon dioxide mineralization reaction process according to claim 7, characterized in that: The following steps are involved: S1: preparing a rock sample and placing the rock sample into a sample chamber (510) of a high-temperature hot stage (5); clamping and fixing the rock sample by four reciprocating electric cylinders (509); S2: placing the high-temperature hot stage (5) containing the rock sample on the stage (106) of the metallographic microscope (1), and focusing the metallographic microscope (1); after focusing, fixing the high-temperature hot stage (5); S3: The dual-axis loading control system (2) controls the electric control valve (603) on the first gas pipeline to open, so as to allow the inert gas to flow into the interior of the high-temperature stage (501); the temperature control and image acquisition system (3) controls the resistance wire (513) to heat the sample chamber (510); S4: During the heating process, the temperature control and image acquisition system (3) acquires the real-time temperature of the sample chamber (510) detected by the thermocouple temperature sensor (502); If the real-time temperature is greater than the preset reaction temperature, the dual-axis loading control system (2) controls the electric control valve (603) on the first gas pipeline to close and the electric control valve (603) on the second gas pipeline to open, so that carbon dioxide is introduced into the high-temperature stage (501); S5: a dual-axis loading control system (2) controls four reciprocating electric cylinders (509) to apply stress to the rock sample; S6: The temperature control and image acquisition system (3) collects images captured by the camera (101) during the reaction between the rock sample and carbon dioxide.

Images