Carbon sequestration device in concrete curing process

Abstract

The utility model discloses a carbon sequestration device in a concrete curing process, which comprises a cylinder body, a flange cover, an air bag, an object placing table and a concrete cube, the flange cover covers the cylinder body, the concrete cube is arranged in the cylinder body through the object placing table, the air bag penetrates through the flange cover through a first connecting pipe and a second connecting pipe to be communicated with the cylinder body, and the air bag is arranged in the cylinder body. The lower portion of the flange cover is connected with a temperature and humidity probe, a lamp and a humidifier. The device has the beneficial effects that the consistency of the pressure intensity in the culture process can be realized by connecting the air bag, so that the influence of the pressure intensity change on the generation rate of the sediment greenhouse gas is avoided, and the air tightness of the device can be ensured by the measure of uniformly mixing the headspace of the bull glass bottle and the air in the air bag through the Kacit peristaltic pump before sampling each time; and regular and multiple sampling monitoring can be realized so as to monitor the carbon sequestration capability of concrete.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete, in particular to a carbon fixation device in the process of concrete curing. Background Art

[0002] Exploring the ability of concrete to fix carbon dioxide (CO2) during curing has a positive effect on achieving the "dual carbon" goal. However, issues such as the carbon fixation rate and cost under different environmental conditions (such as different light intensity and humidity) have not yet been resolved.

[0003] 1. For example, a Chinese patent discloses a phosphogypsum carbon fixation device (publication number: C221027730U), which includes a box for containing phosphogypsum; a gas storage tank connected to the box through a throttling device, and the throttling device is used to control the amount of CO2 introduced into the box from the gas storage tank; an alkali liquid pool connected to the box through a control valve; a monitoring mechanism, which is arranged on the box and is used to monitor the reaction state of the solution; a stirring member, which is movably connected in the box; and a crystallization pool, which is connected to the discharge end of the box. It can improve the carbon fixation effect of phosphogypsum and improve the carbon fixation efficiency, and realize the resource utilization of phosphogypsum through a large-scale carbon fixation process.

[0004] 2. A method for preparing semi-hydrated gypsum from flue gas desulfurization gypsum and its application (publication number: CN117164260A), wherein the preparation steps include: S1: mechanical treatment; taking gypsum, a byproduct of the flue gas industry of a power plant, grinding it, sieving it, and obtaining gypsum powder with a particle size of 90-100 μm; S2: crystallization treatment; taking 5-8 parts of gypsum powder, 1-2 parts of carbon powder and 1-3 parts of a modified crystallizer, placing them in 10-15 parts of water and heating them to 40-70°C, stirring them for 2-5 minutes to evenly disperse them, and obtaining a crystallization solution with a free fiber assembly; S3: solid-phase fiber assembly treatment; taking 3-4 parts of NdMnO3 as a negative thermal expansion material and adding them to the crystallization solution, coating the surface of the fiber assembly with NdMnO3 by a high-temperature solid-phase method, and obtaining a gypsum solution with a solid-phase fiber assembly after heating and stirring; S4: high-strength fiber mixing treatment; the utility model has the effects of high strength and strong bonding force.

[0005] The prior art discloses a carbon fixation device for phosphogypsum, which involves how to improve the carbon fixation efficiency. However, the specific quantification of the carbon fixation rate and the air tightness of the culture device are not mentioned, and there is basically no research on carbon fixation in concrete.

[0006] Therefore, it is necessary to propose a carbon fixation device during concrete curing to solve the above problems. Utility Model Content

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a carbon fixation device during concrete curing to solve the above-mentioned problems.

[0008] A carbon sequestration device during the concrete curing process, comprising a cylinder body, a flange cover, an airbag, a placement table and a concrete cube. The flange cover covers the cylinder body. The concrete cube is installed in the cylinder body through the placement table. The airbag is communicated with the cylinder body through a first connecting pipe and a second connecting pipe passing through the flange cover. A temperature and humidity probe, a lamp and a humidifier are connected to the lower part of the flange cover.

[0009] Preferably, a peristaltic pump is provided at one end of the second connecting pipe communicating with the cylinder body.

[0010] Preferably, a power supply battery is provided in the cylinder body, and the power supply battery supplies power to the temperature and humidity probe 5, the peristaltic pump, the lamp and the humidifier respectively.

[0011] Preferably, an intake valve is provided at one end of the first connecting pipe communicating with the airbag, and an exhaust valve is provided at one end of the second connecting pipe communicating with the airbag.

[0012] Preferably, a three-way valve is provided on the second connecting pipe, and a heparin cap is provided on the three-way valve.

[0013] Preferably, the flange cover is fixedly connected to the cylinder body by bolts and nuts.

[0014] Preferably, an intake hole for the first connecting pipe to pass through is provided on the flange cover.

[0015] Preferably, an exhaust hole for the second connecting pipe to pass through is provided on the flange cover.

[0016] Preferably, the silica gel part of the heparin cap is the gas sampling port.

[0017] A method for a carbon sequestration device during the concrete curing process, and the method steps are as follows:

[0018] S1. Fix and stir, and mix the shape of the concrete evenly to make it a cube, and place it on the placement table;

[0019] S2. Tighten the flange cover with bolts and nuts, and then continuously introduce CO2 with a concentration of 400±20 ppm into the cylinder body through the intake hole until the CO2 concentration in the cylinder body is the same as that of the introduced gas;

[0020] S3. In an environment with a constant CO2 concentration, connect the intake hole and the exhaust hole of the combination of the cylinder body and the flange to an airbag filled with the same CO2 concentration to form a closed circulation path;

[0021] S4. After curing for a certain period of time under 60,000 Lux light and a humidity greater than 95%, turn on the peristaltic pump to mix the gas in the cylinder body and the gas in the airbag evenly, and collect a quantitative gas with a disposable syringe through the heparin cap;

[0022] S5. Measure the CO2 concentration with a greenhouse gas analyzer. Given the surface areas of each part of the concrete, the volume of the gas in the cylinder, the volume of the airbag, the volume of the gas collected each time, and the curing time, the rate of CO2 fixation during the concrete curing process can be calculated finally.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows: By connecting the airbag, the present utility model can achieve the consistency of pressure during the cultivation process, thereby avoiding the influence of pressure changes on the greenhouse gas generation rate of the sediment. In addition, the measure of mixing the headspace of the Shuniubottle and the gas in the airbag evenly with a Kamoer peristaltic pump before each sampling can ensure its airtightness and enable regular and multiple sampling and monitoring to monitor the carbon sequestration ability of the concrete. Description of the Drawings

[0024] Figure 1 is the structure diagram of the carbon sequestration device during the concrete curing process of the present utility model;

[0025] Figure 2 is the structure diagram of the flange cover of the present utility model;

[0026] Figure 3 is the principle block diagram of the control module of the present utility model;

[0027] Figure 4 is the flowchart of the carbon sequestration method of the present utility model.

[0028] Reference numerals in the drawings: 1. Airbag; 101. Inlet valve; 102. Outlet valve; 2. Heparin cap; 3. Three-way valve; 4. Flange cover; 401. Bolt; 402. Nut; 403. Air outlet hole; 404. Air inlet hole; 5. Temperature and humidity probe; 6. Peristaltic pump; 7. Power supply battery; 8. Lamp; 9. Humidifier; 10. Concrete cube; 11. Placement table; 12. Cylinder; 13. Control module; 14. Network module; 15. Monitoring terminal; 16. First connecting pipe; 17. Second connecting pipe. Detailed Embodiments

[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0032] The following will describe the embodiments of the present utility model in detail with reference to the drawings. However, the present utility model can be implemented in many different ways defined and covered by the claims.

[0033] As Figure 1 And in combination with Figures 2 to 4 As shown, a carbon sequestration device during concrete curing includes a cylinder body 12, a flange cover 4, an air bag 1, a placement table 11, and a concrete cube 10. The flange cover 4 covers the cylinder body 12. The concrete cube 10 is installed in the cylinder body 12 through the placement table 11. The air bag 1 penetrates through the flange cover 4 and communicates with the cylinder body through a first connecting pipe 16 and a second connecting pipe 17. A humidity and temperature probe 5, a lamp 8, and a humidifier 9 are connected to the lower part of the flange cover 4.

[0034] Further, a peristaltic pump 6 is provided at one end of the second connecting pipe 17 communicating with the cylinder body 12.

[0035] Further, a power supply battery 7 is provided in the cylinder body 12. The power supply battery 7 supplies power to the humidity and temperature probe 5, the peristaltic pump 6, the lamp 8, and the humidifier 9 respectively.

[0036] A power supply battery 7 is arranged beside a control module 13 and electrically connected to the control module 13. The control module 13 is connected to a network module 14, and the network module 14 is wirelessly connected to a monitoring terminal 15, and the monitoring terminal 15 can perform remote monitoring and control.

[0037] Further, an intake valve 101 is arranged at one end of the first connecting pipe 16 communicating with the air bag 1, and an outlet valve 102 is arranged at one end of the second connecting pipe 17 communicating with the air bag 1.

[0038] Further, a three-way valve 3 is arranged on the second connecting pipe 17, and a heparin cap 2 is arranged on the three-way valve 3.

[0039] Further, the flange cover 4 is fixedly connected to the cylinder body 12 through bolts 401 and nuts 402.

[0040] Further, an intake hole 404 for the first connecting pipe 16 to penetrate through is arranged on the flange cover 4.

[0041] Further, an air outlet hole 403 for the second connecting pipe 17 to penetrate through is arranged on the flange cover 4.

[0042] Further, the silica gel part of the heparin cap 2 is the gas sampling port.

[0043] A method for a carbon fixation device during concrete curing, and the method steps are as follows:

[0044] S1. Fix the shape of the stirred and evenly mixed concrete to make it a cube, and place it on the placement table 11;

[0045] S2. Tighten the flange cover 4 with bolts 401 and nuts 402, and then continuously introduce CO2 with a concentration of 400 ± 20 ppm into the cylinder body 12 through the intake hole until the CO2 concentration in the cylinder body 12 is the same as that of the introduced gas;

[0046] S3. In an environment with a constant CO2 concentration, connect the intake hole 404 and the air outlet hole 403 of the combination of the cylinder body 12 and the flange cover 4 to an air bag filled with the same CO2 concentration to form a closed circulation path;

[0047] S4. After curing for a certain period of time under 60,000 Lux of light and a humidity greater than 95%, turn on the peristaltic pump to evenly mix the gas in the cylinder body 12 and the gas in the air bag 1, and collect a quantitative gas through the heparin cap 2 with a disposable syringe;

[0048] S5. Measure the CO2 concentration with a greenhouse gas analyzer, and the surface area of each surface of the concrete cube 10, the volume of the gas filled in the cylinder body, the volume of the air bag, the volume of the gas collected each time, and the curing time are all known, and finally the rate of CO2 fixation during concrete curing can be calculated.

[0049] Compared with the prior art, the beneficial effects of the present utility model are as follows: By connecting the air bag 1, the present utility model can achieve the consistency of pressure during the cultivation process, thereby avoiding the influence of pressure changes on the production rate of sediment greenhouse gases. In addition, before each sampling, the measure of mixing the headspace of the Shuniu glass bottle and the gas in the air bag 1 evenly by the Kamoer peristaltic pump can ensure its airtightness and enable regular and multiple sampling and monitoring to monitor the carbon sequestration ability of the concrete.

[0050] Among them, the carbon sequestration principle during the concrete curing process is as follows: During the process of the concrete cube 10 being exposed to the air, CO2 will penetrate into the concrete surface and react chemically with calcium hydroxide (Ca(OH)2) in the concrete cube 10 to form calcium carbonate (CaCO3). This process can not only improve the density and strength of the concrete, but more importantly, can reduce the content of CO2 in the atmosphere to a certain extent.

[0051] Among them, the air bag 1 is used to contain CO2 with a fixed volume and a fixed concentration (this concentration is the same as the CO2 concentration in the cylinder body). After being connected to the cylinder body (made of acrylic material) 12 of the flange cover 4, it forms a closed environment with constant pressure; the silicone part of the heparin cap 2 is the gas sampling port, which can be realized by using a disposable syringe; the three-way valve 3 is used to control the gas flow direction; the flange 4 is the key to ensuring the airtightness of the curing device. There is a silicone pad between the circular cover plate 4-3 and the upper edge of the acrylic cylinder body, and then it is tightened with bolts 401 and nuts 402 to achieve airtightness; the temperature and humidity probe 5 is used to monitor the humidity; the peristaltic pump 6 needs to run for a period of time before regularly monitoring the CO2 concentration to make the CO2 concentration in the cylinder body 12 the same as that in the air bag; the power supply battery 7 supplies power to the temperature and humidity probe 5, the peristaltic pump 6, the lamp 8, and the humidifier 9; the concrete cube 10 has a regular shape, and the area of each of its faces can be calculated; the placement table 110 is used to place the concrete cube 10; the cylinder body 12 also has a regular shape and a fixed internal volume.

[0052] Example 1:

[0053] Fix the shape of the stirred and evenly mixed concrete to make it a cube and place it on the placement table; tighten the flange cover with bolts and nuts, and then continuously introduce CO2 with a concentration of 400 ± 20 ppm into the cylinder body through the air inlet hole until the CO2 concentration in the cylinder body is the same as that of the introduced gas; in an environment with a constant CO2 concentration, connect the air inlet hole and the air outlet hole of the combination of the cylinder body and the flange to the air bag filled with the same CO2 concentration to form a closed circulation path; after curing for a certain period of time under 60,000 Lux light and a humidity greater than 95%, turn on the peristaltic pump to mix the gas in the cylinder body and the gas in the air bag evenly, and collect a quantitative gas through the heparin cap with a disposable syringe; measure the CO2 concentration with a greenhouse gas analyzer, and the surface area of each part of the concrete, the gas volume in the cylinder body, the volume of the air bag, the volume of the gas collected each time, and the curing time are all known. Finally, the rate of CO2 fixation during the concrete curing process can be calculated.

[0054] Experimental analysis

[0055] The carbon fixation method of the embodiment of the present utility model is used to conduct carbon fixation experiments on the concrete cube 10 respectively. 8 groups are set, namely experimental groups 1-8. The experimental groups 1-8 are respectively subjected to carbon fixation curing for 0, 1, 2, 3, 4, 5, 6, and 6 days, and then the CO2 concentration and CO2 absorption flux are measured to obtain Table 1 below;

[0056] Table 1 is the CO2 absorption flux table for the carbon fixation curing of the concrete cube 10

[0057]

[0058] Through comparative analysis, it can be seen from Table 1 that the CO2 concentration and CO2 absorption flux gradually decrease as time increases.

[0059] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A carbon fixation device during the concrete curing process, characterized in that: It includes a cylinder body (12), a flange cover (4), an air bag (1), a storage table (11) and a concrete cube (10). The flange cover (4) covers the cylinder body (12). The concrete cube (10) is installed in the cylinder body (12) through the storage table (11). The air bag (1) is communicated with the cylinder body through a first connecting pipe (16) and a second connecting pipe (17) passing through the flange cover (4). A temperature and humidity probe (5), a lamp (8) and a humidifier (9) are connected to the lower part of the flange cover (4).

2. The carbon fixation device during the curing process of concrete as described in claim 1, wherein: One end of the second connecting pipe (17) communicated with the cylinder body (12) is provided with a peristaltic pump (6).

3. The carbon fixation device during the concrete curing process according to claim 1, characterized in that: A power supply battery (7) is arranged in the cylinder body (12), and the power supply battery (7) supplies power to the temperature and humidity probe (5), the peristaltic pump (6), the lamp (8) and the humidifier (9) respectively.

4. The carbon fixation device during the concrete curing process according to claim 1, wherein: One end of the first connecting pipe (16) communicated with the air bag (1) is provided with an intake valve (101), and one end of the second connecting pipe (17) communicated with the air bag (1) is provided with an outlet valve (102).

5. The carbon fixation device during the concrete curing process according to claim 1, characterized in that: The second connecting pipe (17) is provided with a three-way valve (3), and the three-way valve (3) is provided with a heparin cap (2).

6. The carbon fixation device during the concrete curing process according to claim 1, wherein: The flange cover (4) is fixedly connected with the cylinder body (12) through bolts (401) and nuts (402).

7. The carbon fixation device during the concrete curing process according to claim 1, characterized in that: An intake hole (404) for the first connecting pipe (16) to pass through is arranged on the flange cover (4).

8. The carbon fixation device during the concrete curing process according to claim 1, characterized in that: An air outlet hole (403) for the second connecting pipe (17) to pass through is arranged on the flange cover (4).

9. The carbon fixation device during the concrete curing process according to claim 5, wherein: The silica gel part of the heparin cap (2) is the gas sampling port.

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