A test device for monitoring carbon sequestration performance of materials in real time

Abstract

This invention discloses a testing device for real-time monitoring of the carbon fixation performance of materials. It includes a sealed reaction vessel, a carbon dioxide gas cylinder containing carbon dioxide gas, a vacuum pump, a weighing device, and a sample support structure. The carbon dioxide gas cylinder and the vacuum pump are connected to the reaction vessel via gas supply pipes. Switch valves are installed on each of the two gas supply pipes. A gas flow meter is installed on the gas supply pipe connected to the carbon dioxide gas cylinder. The reaction vessel is equipped with a temperature sensor for measuring internal temperature, a humidity sensor for measuring internal humidity, a vacuum gauge for measuring internal vacuum pressure, and a carbon dioxide pressure gauge for measuring internal carbon dioxide pressure. The weighing device is detachably installed inside the reaction vessel to obtain the sample mass in real time. A plate is installed on top of the weighing device, and the sample support structure is located on top of the plate. This invention can detect the carbon fixation amount and carbon fixation rate of samples in real time during mineralization curing.

Description

Technical Field

[0001] This utility model relates to the field of material carbon fixation performance testing equipment, specifically a test device for real-time monitoring of material carbon fixation performance. Background Technology

[0002] With the massive emission of greenhouse gases globally, the climate and environment are deteriorating, with carbon dioxide being the main component. Greenhouse gas control can be approached from two aspects: firstly, reducing carbon dioxide emissions at their source, a crucial measure for mitigating greenhouse gas emissions; and secondly, scientifically and rationally utilizing carbon dioxide and developing carbon dioxide sequestration technologies, an effective method for reducing atmospheric carbon dioxide concentration. Carbon dioxide sequestration technology utilizes carbon dioxide to preserve solid waste materials, cement-based materials, etc., by reacting carbon dioxide with the calcium and magnesium alkaline components in the materials under certain conditions to form stable carbonate substances, thereby sequestering the carbon dioxide within the materials and achieving carbon sequestration.

[0003] The carbon fixation performance of materials is usually characterized by carbon fixation amount and carbon fixation rate. The simplest and most intuitive test method for measuring carbon fixation amount and carbon fixation rate is the weight gain method. The general process of the weight gain method is as follows: First, the mass of the sample before mineralization curing is measured. Then, the sample is placed in a sealed reaction vessel of the measuring equipment for mineralization curing. After mineralization curing is completed, the sample is taken out of the reaction vessel, and the mass of the sample at the end of curing is measured. The difference between the two mass measurements is obtained, and this difference is the carbon fixation amount of the sample. The ratio between the carbon fixation amount and the mass of the sample before mineralization curing is the carbon fixation rate of the sample.

[0004] In the above experimental method, since the mineralization curing of the sample is carried out in a closed reaction vessel, the existing measuring equipment cannot measure the mass of the sample during the mineralization curing process. Therefore, most of the current measuring equipment can only test the carbon fixation amount and carbon fixation rate of the sample at the end of curing, but cannot measure the real-time carbon fixation amount and real-time carbon fixation rate of the sample during the curing process. Utility Model Content

[0005] The purpose of this invention is to provide a test device for real-time monitoring of the carbon fixation performance of materials, which can detect the amount and rate of carbon fixation of samples in real time during the mineralization curing process.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A testing device for real-time monitoring of the carbon fixation properties of materials is characterized by comprising a sealed reaction vessel, a carbon dioxide gas cylinder containing carbon dioxide gas, a vacuum pump, a weighing device, and a sample support structure. The carbon dioxide gas cylinder and the vacuum pump are connected to the reaction vessel via gas supply pipes. Switch valves are installed on the two gas supply pipes. A gas flow meter is installed on the gas supply pipe connected to the carbon dioxide gas cylinder. The reaction vessel is equipped with a temperature sensor for measuring internal temperature, a humidity sensor for measuring internal humidity, a vacuum pressure gauge for measuring internal vacuum pressure, and a carbon dioxide pressure gauge for measuring internal carbon dioxide pressure. The weighing device is detachably installed inside the reaction vessel to obtain the sample mass in real time. A plate is provided on top of the weighing device, and the sample support structure is located on top of the plate.

[0008] Furthermore, the bottom of the reactor is provided with a vertically upward sleeve, and the bottom of the weighing device is provided with a vertically downward support leg, which can be inserted into the sleeve.

[0009] Furthermore, the weighing device includes a protective box and a pressure sensor. The support legs are located below the protective box, the pressure sensor is located inside the protective box, and the plate is located above the protective box, with the middle of the plate connected to the pressure sensor.

[0010] Furthermore, the sample support structure includes a sample rack for supporting block samples, a tray for laying out powdered samples, and a sample container for holding powdered samples.

[0011] Furthermore, a support rod is installed at the bottom of the sample holder, and multiple horizontal bars are installed side by side on top, with hollow holes formed between the horizontal bars.

[0012] Furthermore, the reactor includes a vessel body and a vessel cover. An opening is provided at the upper end of the vessel body, and the vessel cover is placed over the opening at the upper end of the vessel body. The vessel cover and the periphery of the opening are sealed by a sealing ring and fixedly connected together by sealing bolts.

[0013] Furthermore, the reactor is equipped with mounting feet at the bottom, which are fixed to the ground by anchor bolts.

[0014] Furthermore, the testing equipment also includes a control panel for recording and displaying test data, with temperature, humidity, and pressure sensors connected to the control panel via wires or wirelessly.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) By setting a weighing device in the reaction vessel, the present invention can obtain the mass of the sample in real time during the test. The difference between the real-time mass of the sample and the initial mass of the sample is the real-time carbon fixation amount of the sample. The ratio of the real-time carbon fixation amount of the sample to the initial mass of the sample is the real-time carbon fixation rate of the sample. Therefore, the present invention can obtain the carbon fixation amount and carbon fixation rate of the sample in real time during the curing process.

[0017] (2) Since the mineralization curing of the sample is carried out in a sealed reaction vessel, existing test methods often lack an accurate indicator to determine whether the mineralization curing has ended. Typically, to ensure sufficient mineralization reaction, the mineralization curing time is extended as much as possible, resulting in a long test duration. However, this invention uses real-time weighing of the sample to determine the progress of the mineralization reaction based on the trend of sample mass change. When the sample mass no longer changes within a specified time, the mineralization reaction can be considered complete. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the test equipment according to an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of the test equipment according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the weighing device according to an embodiment of the present utility model;

[0021] Figure 4 This is a cross-sectional view of the weighing device according to an embodiment of the present invention.

[0022] Meaning of the labels in the attached diagram:

[0023] 1-Carbon dioxide gas cylinder; 101-Switch valve on the gas supply pipe connected to the carbon dioxide gas cylinder; 2-Vacuum pump; 201-Switch valve on the gas supply pipe connected to the vacuum pump; 3-Reaction vessel; 301-Gas flow meter; 302-Carbon dioxide pressure gauge; 303-Vacuum pressure gauge; 304-Temperature sensor; 305-Humidity sensor; 306-Sealing bolt; 307-Sleeve; 308-Vessel body; 309-Vessel lid; 310-Fixing foot; 4-Control panel; 5-Weighing device; 501-Sample rack; 502-Plate; 503-Protective box; 504-Support leg; 505-Pressure sensor; 506-Crossbar; 507-Sleeve; 6-Anchor bolt; 7-Gas supply pipe. Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Example:

[0029] like Figures 1 to 4 The apparatus shown in this embodiment is a test device for real-time monitoring of the carbon fixation performance of materials, which includes a reaction vessel 3, a carbon dioxide gas tank 1, a vacuum pump 2, a weighing device 5, and a sample support structure.

[0030] The reactor 3 is a sealed unit used for the mineralization and preservation of samples. The internal volume of the reactor 3 can be selected according to actual needs. The reactor 3 is preferably cylindrical because the cylindrical shape results in uniform stress on the cavity walls, extending its service life. In this embodiment, the reactor 3 consists of a body 308 and a lid 309. The body 308 has fixing feet 310 at its bottom, which are fixed to the ground by anchor bolts 6 to improve the stability and safety of the reactor 3. An opening is provided at the upper end of the body 308, and the lid 309 covers this opening. The lid 309 and the periphery of the opening are sealed by a conventional sealing ring and fixed together by sealing bolts 306. Because the pressure inside the reactor is high and the sealing requirement is high during the reaction process, the use of sealing bolts 306 to connect the lid 309 and the body 308 in this embodiment improves the stability and sealing of the reactor 3.

[0031] The carbon dioxide gas cylinder 1 and the vacuum pump 2 are connected to the reactor body 308 of the reaction vessel 3 via gas supply pipes 7. Each of the two gas supply pipes 7 is equipped with a switch valve to control the opening and closing of the two gas supply pipes 7. A gas flow meter 301 is installed on the gas supply pipe connected to the carbon dioxide gas cylinder to measure the amount of carbon dioxide gas supplied from the carbon dioxide gas cylinder 1 to the reaction vessel 3. The carbon dioxide gas cylinder 1 contains compressed carbon dioxide gas to provide carbon dioxide gas for the experiment. The vacuum pump 2 is used to evacuate the cavity of the reaction vessel 3.

[0032] A temperature sensor 304, a humidity sensor 305, a vacuum pressure gauge 303, and a carbon dioxide pressure gauge 302 are installed on the lid 309 of the reactor 3. The temperature sensor 304 is used to monitor the temperature inside the reactor 3, the humidity sensor 305 is used to monitor the humidity inside the reactor 3, the vacuum pressure gauge 303 is used to measure the pressure inside the reactor 3, and the carbon dioxide pressure gauge 302 is used to measure the carbon dioxide pressure inside the reactor 3. During the experiment, the pressure can be observed through the vacuum pressure gauge 303 and the carbon dioxide pressure gauge 302.

[0033] Weighing device 5 is detachably installed inside reaction vessel 3 to obtain the sample mass in real time. The specific structure of weighing device 5 is as follows: Figure 3 and Figure 4 As shown, the weighing device 5 includes a plate 502, a protective box 503, and a pressure sensor 505. Four vertically downward supporting legs 504 are located below the protective box 503. The pressure sensor 505 is housed inside the protective box 503, which is made of waterproof and heat-insulating material. The top of the protective box 503 has a conventional, openable flip-top with a through hole in the center. The pressure sensor 505 is an existing product with the function of real-time sample mass measurement. During the test, different ranges of pressure sensors 505 can be selected according to the sample mass. The plate 502 is located above the protective box 503, and its center is connected to the pressure sensor 505. The pressure sensor 505 measures the mass on the plate 502 in real time.

[0034] Since mineralization curing is usually carried out under high pressure, and the mineralization curing test process is an exothermic reaction that generates water, the reactor 3 is generally in a high temperature, high humidity and high pressure state. Therefore, the pressure sensor 505 should preferably be a product with better corrosion resistance.

[0035] The sample support structure is located on the plate 502 and is used for placing the sample. In this embodiment, the sample support structure includes a sample rack 501, a tray, and a sample container (only the sample rack 501 is shown in the figure).

[0036] Support rods 507 are installed at the four corners of the bottom of the sample holder 501. The support rods 507 can support the plate 502. Multiple horizontal bars 506 are arranged side by side on the top of the sample holder 501, forming perforations between the horizontal bars 506. During the test, the block sample is placed on the sample holder 501 for mineralization curing. The sample holder 501 supports the block sample, and the perforated structure increases the contact area between the sample and carbon dioxide gas, allowing the sample to react more fully with carbon dioxide.

[0037] The tray is a standard disc shape, and the sample container is a standard cylindrical shape. During the test, the powdered sample can be placed in either the tray or the sample container. When the powdered sample is placed in the tray, it can be spread out evenly on the tray.

[0038] In this embodiment, four vertically upward sleeves 307 are provided at the bottom of the reactor 3. The support legs 504 of the weighing device 5 can be inserted into the sleeves 307, so that the weighing device 5 can be detachably installed in the reactor 3.

[0039] The experimental equipment in this embodiment further includes a control panel 4 for recording and displaying test data. Temperature sensor 304, humidity sensor 305, and pressure sensor 505 are connected to the control panel 4 via wires or wirelessly, such as via Bluetooth. During the test, the control panel 4 can record and display information such as temperature, humidity, and sample quality in real time. The control panel 4 also has conventional functions such as information copying and data downloading.

[0040] The method of using the test equipment in this embodiment is as follows:

[0041] First, select a pressure sensor 505 with an appropriate range based on the sample mass. Place the pressure sensor 505 into the protective box 503 and install the plate 502 on top of the pressure sensor 505 to complete the assembly of the weighing device 5. Then, place the weighing device 5 inside the reaction vessel 3, with the support legs 504 of the weighing device 5 inserted into the sleeve 307. Select a suitable sample support structure according to the type of sample. For example, for block samples such as cuboids and cylinders, a sample rack 501 needs to be placed on the plate 502 to hold the sample, while for powdered samples, a tray or sample container needs to be placed on the plate 502 to hold the sample.

[0042] Next, cover the reactor vessel 3 with lid 309 and connect the sealing bolts 306. Open the valve 201 on the gas supply pipe connected to the vacuum pump, and use the vacuum pump 2 to remove the air from inside the reactor vessel 3. Observe the vacuum pressure gauge 303. When the value in the vacuum pressure gauge 303 reaches the target value, close the vacuum pump 2 and the valve 201 on the gas supply pipe connected to the vacuum pump. Then, open the valve 101 on the gas supply pipe connected to the carbon dioxide tank, allowing carbon dioxide gas from the carbon dioxide tank 1 to enter the reactor vessel 3. Observe the carbon dioxide pressure gauge 302. When the value in the carbon dioxide pressure gauge 302 reaches the target value, close the valve 101 on the gas supply pipe connected to the carbon dioxide tank.

[0043] Observe the real-time monitoring results of temperature sensor 304, humidity sensor 305, and pressure sensor 505 in control panel 4. When the measurement result of pressure sensor 505 no longer changes, the reaction can be considered to have ended. The difference between the real-time mass and the initial mass of the sample is the carbon fixation amount of the sample, and the ratio of the carbon fixation amount to the initial mass is the carbon fixation rate of the sample.

[0044] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A testing device for real-time monitoring of the carbon fixation properties of materials, characterized in that: The apparatus includes a sealed reaction vessel, a carbon dioxide gas cylinder containing carbon dioxide gas, a vacuum pump, a weighing device, and a sample support structure. The carbon dioxide gas cylinder and the vacuum pump are connected to the reaction vessel via gas supply pipes. Switch valves are installed on each of the two gas supply pipes. A gas flow meter is installed on the gas supply pipe connected to the carbon dioxide gas cylinder. The reaction vessel is equipped with a temperature sensor for measuring internal temperature, a humidity sensor for measuring internal humidity, a vacuum pressure gauge for measuring internal vacuum pressure, and a carbon dioxide pressure gauge for measuring internal carbon dioxide pressure. The weighing device is detachably installed inside the reaction vessel to obtain the sample mass in real time. A flat plate is provided on top of the weighing device, and the sample support structure is located on top of the flat plate.

2. The experimental equipment for real-time monitoring of the carbon fixation properties of materials according to claim 1, characterized in that: The bottom of the reactor is provided with a vertically upward sleeve, and the bottom of the weighing device is provided with a vertically downward support leg, which can be inserted into the sleeve.

3. The experimental equipment for real-time monitoring of the carbon fixation properties of materials according to claim 2, characterized in that: The weighing device includes a protective box and a pressure sensor. The support leg is located below the protective box, the pressure sensor is located inside the protective box, and the plate is located above the protective box. The middle part of the plate is connected to the pressure sensor.

4. The experimental equipment for real-time monitoring of the carbon fixation properties of materials according to claim 1, characterized in that: The sample support structure includes a sample rack for supporting block samples, a tray for laying out powdered samples, and a sample container for holding powdered samples.

5. The testing equipment for real-time monitoring of the carbon fixation properties of materials according to claim 4, characterized in that: The sample holder has a support rod at the bottom and multiple horizontal bars arranged side by side on top, with hollow holes formed between the horizontal bars.

6. The experimental device for real-time monitoring of the carbon fixation properties of materials according to claim 1, characterized in that: The reactor includes a vessel body and a vessel lid. An opening is provided at the upper end of the vessel body, and the vessel lid covers the opening at the upper end of the vessel body. The vessel lid and the periphery of the opening are sealed by a sealing ring and fixedly connected together by sealing bolts.

7. The experimental device for real-time monitoring of the carbon fixation properties of materials according to claim 1, characterized in that: The reactor is equipped with mounting feet at the bottom, which are fixed to the ground by anchor bolts.

8. The experimental device for real-time monitoring of the carbon fixation properties of materials according to claim 3, characterized in that: The testing equipment also includes a control panel for recording and displaying test data, and the temperature sensor, the humidity sensor and the pressure sensor are respectively connected to the control panel via wires or wireless means.

Images