A large tank for carbonation of recycled concrete aggregates and a carbonation method

Abstract

The present application relates to the technical field of concrete carbonation, and particularly relates to a large tank for carbonation of recycled concrete aggregate and a carbonation method, which comprises a tank, a control module, a dispersion carbon release device and a circulation carbon release device fixedly connected to the inside of the tank along the length direction of the tank, the dispersion carbon release device is located at the middle part of the inner wall of the tank, the circulation carbon release device is located at the top and bottom of the inner wall of the tank, one end of the tank is hingedly connected with a sealing cover, and the inside of the tank is fixedly connected with a sealing device at the end close to the sealing cover. The carbon dioxide enters the tank from the carbon dioxide inlet pipe, and at the same time, the air pump is opened. The air pump draws the high-concentration carbon dioxide deposited at the bottom of the tank into the first pipeline from the inlet hole of the second pipeline, and the carbon dioxide is diffused from the upper part of the inner cavity of the tank to the inside of the tank, so that the uniform carbonation of the recycled concrete aggregate in the tank is ensured, and the production quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete carbonization, and in particular to a large tank body and a carbonization method for carbonizing recycled concrete aggregate. Background Art

[0002] Concrete carbonation refers to a type of chemical corrosion to concrete. This process, also known as neutralization, occurs when CO2 gas in the air penetrates the concrete and reacts with alkaline substances to form carbonates and water. Concrete carbonation, also known as neutralization, is a process used to carbonize concrete. Carbon dioxide gas is introduced into the concrete tank to perform the carbonization. The heavier carbon dioxide will gradually settle at the bottom of the tank, resulting in uneven carbonization of the concrete aggregate, which can affect overall production quality. Summary of the Invention

[0003] In order to enhance the uniform carbonization of concrete aggregates, the present invention provides a large tank body and a carbonization method for carbonizing recycled concrete aggregates.

[0004] The present invention provides a large tank for carbonizing recycled concrete aggregate and a carbonization method using the following technical solutions:

[0005] A large tank for carbonizing recycled concrete aggregates comprises a tank body and a control module. A dispersed carbon release device and a circulating carbon release device are fixedly connected to the interior of the tank body along the length direction of the tank body. The dispersed carbon release device is located in the middle of the inner wall of the tank body, and the circulating carbon release device is located at the top and bottom of the inner wall of the tank body. A sealing cover is hingedly connected to one end of the tank body, and a sealing device is fixedly connected to the inner end of the tank body near the sealing cover. A support is hingedly connected to the bottom of the tank body, and a hydraulic telescopic rod mounting seat is provided at the bottom of one end of the tank body. The control module comprises a controller with a display.

[0006] By adopting the above technical solution, the carbon dioxide accumulated at the bottom of the tank is transported to the top of the tank through the circulating carbon release device, so that the carbon dioxide and the recycled concrete aggregate in the tank are evenly carbonized.

[0007] Preferably, a carbon dioxide air inlet pipe is fixedly connected to the bottom of the tank body, and the dispersed carbon release device includes two air distribution pipes, which are symmetrically placed on both sides of the central axis of the tank body. The outer surfaces of the two air distribution pipes are provided with a plurality of first air outlet holes arrayed along their length directions. One end of the two air distribution pipes is fixedly connected to an air pressure sensor, and the other end of the two air distribution pipes is fixedly connected to one end of the carbon dioxide air inlet pipe; a flow valve is fixedly connected to the carbon dioxide air inlet pipe, and the flow valve is communicatively connected to the controller.

[0008] Preferably, a mounting groove is provided inside each of the first air outlet holes, a rubber ring matching the mounting groove is provided on the outer surface of each of the filter plates, and each of the rubber rings is snapped into the corresponding mounting groove. The circulating carbon release device includes a first pipe and a second pipe. The bottom of the first pipe is provided with a plurality of second air outlet holes arrayed along its length direction, and the top of the second pipe is provided with a plurality of air inlet holes arrayed along its length direction. The first pipe and the second pipe are respectively located at the top and bottom of the tank body, and filter membranes are fixedly connected to the inlets of the plurality of air inlets and the outlets of the plurality of second air outlet holes.

[0009] By adopting the above technical solution, carbon dioxide evenly enters the interior of the tank through the first air outlet and undergoes carbonization modification with the recycled concrete aggregate, and the replaceable filter plate is used to prevent the recycled concrete aggregate from clogging the air distribution pipe.

[0010] Preferably, an air pump is fixedly connected to one end of the inner wall of the tank body, the input and output ends of the air pump are fixedly connected to one end of the second pipe and one end of the first pipe respectively, the air pump is communicatively connected to the controller, and a sampling tube is fixedly connected to the bottom of the tank body.

[0011] By adopting the above technical solution, the air pump draws the high-concentration carbon dioxide deposited at the bottom of the tank into the first pipe through the air inlet of the second pipe, and disperses it into the interior of the tank from the upper part of the inner cavity of the tank, thereby ensuring the uniform carbonization of the recycled concrete aggregate inside the tank, thereby improving production quality.

[0012] Preferably, the sealing device includes a sealing plug, one side of the sealing plug is fixedly connected to one side of the sealing cover, the outer surface of the sealing plug is clamped to the inner wall of the tank body, and the side of the sealing plug away from the sealing cover is fixedly connected to a carbon dioxide concentration sensor, a temperature sensor and a humidity sensor, and the carbon dioxide concentration sensor, temperature sensor and humidity sensor are all communicatively connected to the controller; a plurality of annular sealing grooves are provided on the outer surface of the sealing plug, and an annular airbag groove adapted to the annular sealing groove is provided at one end of the tank body close to the sealing cover.

[0013] By adopting the above technical solution, the temperature sensor and the humidity sensor start monitoring after the carbon dioxide is input into the tank body 1, and the carbon dioxide concentration sensor starts detecting after the air pump has been running for a period of time. In this way, after the carbon dioxide inside the tank body is evenly distributed, the carbon dioxide concentration sensor can measure the actual carbon dioxide concentration inside the tank body.

[0014] Preferably, an annular airbag is fixedly connected to the interior of each annular airbag groove, an air inlet and outlet nozzles are provided on the top of the tank body, and several of the annular airbags are connected to the air inlet and outlet nozzles.

[0015] By adopting the above technical solution, air is injected through the air inlet and outlet nozzles, so that the annular airbag expands until it is in contact with the sealing plug, and the annular airbag blocks the annular sealing groove to prevent carbon dioxide leakage.

[0016] Preferably, two hydraulic rods are fixedly connected to the outer wall of the tank body, the output ends of the two hydraulic rods are fixedly connected to one side of the sealing cover, and the two hydraulic rods are symmetrically placed on both sides of the central axis of the tank body; the top of the hydraulic telescopic rod mounting seat is hinged with a hydraulic telescopic rod, the output end of the hydraulic telescopic rod is hinged to the outer wall of the tank body, and the support and the hydraulic telescopic rod mounting seat are connected to the ground by bolts.

[0017] A concrete carbonization method comprises the following steps: A. a controller controls a hydraulic telescopic rod and two hydraulic rods to rotate a tank body until the end is tilted upward, controls opening a sealing cover, injects a certain amount of concrete into the tank body, closes the sealing cover, and rotates the tank body to a horizontal position; B. a controller controls a flow valve to allow carbon dioxide gas to enter a gas distribution pipe and escape into the concrete through a first gas outlet, thereby uniformly carbonizing the concrete; and C. after a certain period of carbonization reaction, the controller controls the hydraulic telescopic rod and two hydraulic rods to rotate the tank body until the end is tilted downward, controls opening the sealing cover, and pours out the carbonized concrete.

[0018] By adopting the above technical solution, the tank body can be pushed to rotate around the support by opening the hydraulic telescopic rod, so that the carbonized concrete material in the tank body can be discharged after the sealing cover is opened, which is very convenient.

[0019] Preferably, the specific operation steps of uniformly carbonizing the concrete include: a controller controls an air pump to transport the carbon dioxide deposited at the bottom of the tank to the interior of the first pipeline.

[0020] By adopting the above technical solution, a high concentration of carbon dioxide is transported to a low concentration by an air pump, and then the recycled concrete aggregate in the tank body 1 is kept uniformly carbonized, while ensuring the balance of air pressure inside the tank body.

[0021] In summary, the present invention has the following beneficial technical effects:

[0022] 1. The present invention is provided with a dispersed carbon release device and a circulating carbon release device. The outer surfaces of the two air distribution pipes are each provided with a plurality of first air outlet holes arrayed along their length direction. The first air outlet holes are arranged in a circumferential array in the vertical cross-sectional direction of the air distribution pipes, so that carbon dioxide is uniformly dispersed from both sides of the tank body to the middle, top, and bottom, and carbonized and modified with the recycled concrete aggregate in the tank body to the greatest extent. Carbon dioxide enters the air distribution pipe from the carbon dioxide inlet pipe and is uniformly distributed to the interior of the tank body from each first air outlet to carbonize the recycled concrete aggregate inside. At the same time, the air pump is turned on and draws the high-concentration carbon dioxide deposited at the bottom of the tank body into the first pipe through the air inlet hole of the second pipe, and disperses it into the interior of the tank body from the upper part of the inner cavity of the tank body, thereby ensuring uniform carbonization of the recycled concrete aggregate inside the tank body, thereby improving production quality.

[0023] 2. The present invention is provided with a support and a hydraulic telescopic rod mounting base. The support supports the tank body, and the hydraulic telescopic rod mounting base supports the tank body through the hydraulic telescopic rod. By opening the hydraulic telescopic rod, the tank body can be pushed to rotate around the support, thereby facilitating the discharge of carbonized concrete material inside the tank body after the sealing cover is opened. This is very convenient and facilitates the rapid loading and unloading of recycled concrete aggregates.

[0024] 3. The present invention is provided with a detachable filter plate, which can be pulled out of the installation slot through a rubber ring. When the current air pressure sensor data is large and the carbon dioxide concentration is low, it may be that the filter plate is blocked by recycled concrete aggregate. After replacing the filter plate, carbonization can be continued. After cleaning the filter plate, the original filter plate can be used again, which is convenient for the recycling of the filter plate.

[0025] 4. The present invention is provided with an air pressure sensor, a carbon dioxide concentration sensor, a temperature sensor and a humidity sensor. The carbon dioxide concentration sensor can monitor the carbon dioxide concentration in the tank in real time. The controller controls the opening of the flow valve through the data monitored by the air pressure sensor, the carbon dioxide concentration sensor, the temperature sensor and the humidity sensor. When the carbon dioxide is excessive, the opening of the flow valve is reduced to reduce the supply of carbon dioxide. When the carbon dioxide concentration is low, the flow valve is fully opened until the carbon dioxide concentration reaches a certain value, and then the opening of the flow valve is reduced. When the humidity in the tank is low, it is not conducive to the dissolution of carbon dioxide, thereby reducing the carbonization rate of the recycled concrete aggregate. When the humidity in the tank needs to be increased, when the temperature in the tank is low, it is not conducive to the diffusion of carbon dioxide and the seepage of calcium ions in the recycled concrete aggregate. Water vapor can be provided to the carbon dioxide inlet pipe to increase the temperature and humidity in the tank, thereby increasing the diffusion rate of carbon dioxide and accelerating the rate of carbonization modification of the recycled concrete aggregate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a large tank for carbonizing recycled concrete aggregate in the present invention.

[0027] Figure 2 This is a schematic diagram of the internal structure of a large tank for carbonizing recycled concrete aggregates in the present invention;

[0028] Figure 3 yes Figure 2 A magnified schematic diagram of the local structure at point A;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the air distribution pipe in the present invention;

[0030] Figure 5 is a top view of the air distribution pipe in the present invention;

[0031] Figure 6 yes Figure 5 Cross-sectional view along line BB;

[0032] Figure 7 yes Figure 6 Enlarged schematic diagram of the local structure at point C in the middle.

[0033] Description of reference numerals:

[0034] 1. Tank body; 2. CO2 inlet pipe; 3. Gas distribution pipe; 4. First air outlet;

[0035] 5. First pipe; 6. Second air outlet; 7. Second pipe; 8. Air inlet; 9. Air pump;

[0036] 10. Sealing cover; 11. Hydraulic rod; 12. Sealing plug; 13. Annular sealing groove; 14. Annular airbag groove;

[0037] 15. Annular airbag; 16. Air inlet and outlet nozzles; 17. Support; 18. Hydraulic telescopic rod mounting base;

[0038] 19. Hydraulic telescopic rod; 20. Carbon dioxide concentration sensor; 21. Sampling tube; 22. Filter plate. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-Figure 7 The present invention is described in further detail.

[0040] An embodiment of the present invention discloses a large tank for carbonizing recycled concrete aggregate.

[0041] Reference Figure 1, including a tank body 1 and a control module. The interior of the tank body 1 is fixedly connected with a dispersed carbon release device and a circulating carbon release device along the length direction of the tank body 1. The dispersed carbon release device disperses and transports carbon dioxide to the interior of the tank body 1 to avoid carbon dioxide agglomeration. The circulating carbon release device pumps carbon dioxide accumulated at the bottom of the tank body 1 to the top, thereby uniforming the overall carbon dioxide concentration in the tank body 1 and avoiding the deposition of carbon dioxide at the bottom. The dispersed carbon release device is located in the middle of the inner wall of the tank body 1, and the circulating carbon release device is located at the top and bottom of the inner wall of the tank body 1. A sealing cover 10 is hinged at one end of the tank body 1, and a sealing device is fixedly connected at one end of the interior of the tank body 1 near the sealing cover 10. The sealing device prevents the escape of carbon dioxide and prevents carbon dioxide poisoning of operators. A support 17 is hinged at the bottom of the tank body 1. The support 17 and the hydraulic telescopic rod mounting seat 18 support the tank body 1, and at the same time, the tank body 1 can be tilted according to the current working conditions. A hydraulic telescopic rod mounting seat 18 is provided at the bottom of one end of the tank body 1;

[0042] The control module includes a controller with a display, which can remotely monitor the data in the tank 1 in real time through the controller, and can also regulate the input and output of carbon dioxide through the data transmitted by the sensor.

[0043] Reference Figure 1 、 Figure 2 The bottom of the tank body 1 is fixedly connected to a carbon dioxide inlet pipe 2, and the carbon dispersion device includes two air distribution pipes 3, which are symmetrically placed on both sides of the central axis of the tank body 1. The outer surfaces of the two air distribution pipes 3 are provided with a plurality of first air outlet holes 4 arrayed along their length directions. The first air outlet holes 4 are in a circumferential array in the vertical cross-sectional direction of the air distribution pipes 3, so that carbon dioxide escapes from both sides of the tank body 1 to the middle, top and bottom. One end of the two air distribution pipes 3 is fixedly connected to an air pressure sensor, and the other end of the two air distribution pipes 3 is fixedly connected to one end of the carbon dioxide inlet pipe 2. The carbon dioxide inlet pipe 2 is connected to the carbon dioxide gas tank, and carbon dioxide enters the air distribution pipe 3 from the carbon dioxide inlet pipe 2; a flow valve is fixedly connected to the carbon dioxide inlet pipe 2, and the flow valve is communicated with the controller. The controller can control the opening of the flow valve, thereby controlling the amount of carbon dioxide entering.

[0044] Reference Figure 4 、 Figure 5 、 Figure 6 , Figure 7 , a mounting groove is provided inside each first air outlet 4, and a rubber ring adapted to the mounting groove is provided on the outer surface of the filter plate 22. Each of the rubber rings is snapped into the corresponding mounting groove, and the filter plate 22 can be pulled out of the mounting groove through the rubber ring. When the current pressure sensor data is large and the carbon dioxide concentration is low, it may be that the recycled concrete aggregate is blocking the filter plate 22. After replacing the filter plate 22, carbonization is continued. The filter plate 22 prevents the recycled concrete aggregate from entering the interior of the air distribution pipe 3.

[0045] Reference Figure 2 The circulating carbon release device includes a first pipe 5 and a second pipe 7. The bottom of the first pipe 5 is provided with a plurality of second air outlet holes 6 arrayed along its length direction. Carbon dioxide enters the air inlet hole 8 and finally enters the interior of the second pipe 7. It is transported into the interior of the first pipe 5 through the air pump 9 and then output from the second air outlet 6 to react with the recycled concrete aggregate at the top of the tank body 1, so that the high concentration of carbon dioxide at the bottom is input to the low concentration at the top, so that the recycled concrete aggregate reacts evenly. The top of the second pipe 7 is provided with a plurality of air inlet holes 8 arrayed along its length direction. The first pipe 5 and the second pipe 7 are respectively located at the top and bottom of the tank body 1. The inlets of the plurality of air inlet holes 8 and the outlets of the plurality of second air outlet holes 6 are fixedly connected with filter membranes, which prevent the recycled concrete aggregate from entering the interior of the first pipe 5 and the second pipe 7 through the filter membranes.

[0046] Reference Figure 2 One end of the inner wall of the tank body 1 is fixedly connected to an air pump 9, and the input end and output end of the air pump 9 are respectively fixedly connected to one end of the second pipe 7 and one end of the first pipe 5. The air pump 9 is communicatively connected to the controller, and the carbon dioxide inlet pipe 2 is connected to the carbon dioxide gas tank. The carbon dioxide enters the air distribution pipe 3 from the carbon dioxide inlet pipe 2 and is evenly distributed to the inside of the tank body 1 from each first air outlet 4 to carbonize the recycled concrete aggregate inside. At the same time, the air pump 9 is turned on, and the air pump 9 draws the high-concentration carbon dioxide deposited at the bottom of the tank body 1 from the air inlet hole 8 of the second pipe 7 into the first pipe 5, and disperses it from the upper part of the inner cavity of the tank body 1 to the inside of the tank body 1. Thereby ensuring the uniform carbonization of the recycled concrete aggregate inside the tank body 1, thereby improving the production quality. A sampling tube 21 is fixedly connected to the bottom of the tank body 1, and a valve is also installed at the bottom of the sampling tube 21. When the valve is opened, a partially carbonized concrete sample can be discharged to detect the degree of carbonization, which is convenient for following up the production progress. After the carbon dioxide gas is introduced into the gas distribution pipe 3, sampling and monitoring of the physical and chemical properties of the recycled concrete aggregate, such as the apparent density, water absorption rate, roughness, and pH value, are required after a certain period of time. When the physical and chemical properties of the recycled concrete aggregate are tested to be qualified, the input of carbon dioxide and the air pump 9 can be stopped to stop the carbonization in the tank body 1.

[0047] Reference Figure 2 、 Figure 3The sealing device includes a sealing plug 12, which is adapted to fit the feed port of the tank body 1. One side of the sealing plug 12 is fixedly connected to one side of the sealing cover 10. The outer surface of the sealing plug 12 is snapped onto the inner wall of the tank body 1. The side of the sealing plug 12 away from the sealing cover 10 is fixedly connected with a carbon dioxide concentration sensor 20, a temperature sensor and a humidity sensor. The carbon dioxide concentration sensor 20, the temperature sensor and the humidity sensor are all communicated with the controller. The carbon dioxide concentration sensor 20 can monitor the carbon dioxide concentration in the tank body 1 in real time. The controller controls the opening of the flow valve through the data monitored by the carbon dioxide concentration sensor 20, the temperature sensor and the humidity sensor. When carbon dioxide is excessive, the opening of the flow valve is reduced to reduce the supply of carbon dioxide. When the carbon dioxide concentration is low, the flow valve is fully opened until the carbon dioxide concentration reaches a certain value, and then the opening of the flow valve is reduced. When the tank body is full, the carbon dioxide concentration is reduced. 1 is low, which is not conducive to the dissolution of carbon dioxide, thereby reducing the carbonization rate of recycled concrete aggregate. When the humidity in the tank body 1 needs to be increased, when the temperature in the tank body 1 is low, it is not conducive to the diffusion of carbon dioxide and the seepage of calcium ions in the recycled concrete aggregate. Water vapor can be provided to the carbon dioxide inlet pipe 2, thereby increasing the temperature and humidity in the tank body 1, thereby increasing the diffusion rate of carbon dioxide and accelerating the rate of carbonization modification of the recycled concrete aggregate; a plurality of annular sealing grooves 13 are provided on the outer surface of the sealing plug 12, and an annular airbag groove 14 adapted to the annular sealing groove 13 is provided at one end of the tank body 1 close to the sealing cover 10. The annular airbag 15 can seal the annular sealing groove 13 after being inflated, so that the sealing plug 12 and the annular airbag 15 are attached to completely seal the sealing cover 10, thereby preventing the recycled concrete aggregate from leaking from the connection between the sealing cover 10 and the tank body 1 or the escape of carbon dioxide during the carbonization process.

[0048] Reference Figure 2 、 Figure 3 An annular airbag 15 is fixedly connected to the inside of each annular airbag groove 14, and an air inlet and outlet nozzle 16 is opened on the top of the tank body 1. Several annular airbags 15 are connected to the air inlet and outlet nozzles 16. When sealing is required, the air inlet and outlet nozzles 16 are connected to the air pump. The air pump injects air into the annular airbag 15. The annular airbag 15 expands to the annular sealing groove 13, and squeezes and seals the connection between the sealing plug 12 and the inner wall of the tank body 1 to prevent carbon dioxide leakage. At the same time, it is beneficial to reduce the amount of carbon dioxide used and prevent on-site workers from inhaling high concentrations of carbon dioxide and causing poisoning.

[0049] Reference Figure 1Two hydraulic rods 11 are fixedly connected to the outer wall of the tank body 1. The output ends of the two hydraulic rods 11 are fixedly connected to one side of the sealing cover 10. The two hydraulic rods 11 are symmetrically placed on both sides of the central axis of the tank body 1; a hydraulic telescopic rod 19 is hinged on the top of the hydraulic telescopic rod mounting seat 18, and the output end of the hydraulic telescopic rod 19 is hinged to the outer wall of the tank body 1. The support 17 and the hydraulic telescopic rod mounting seat 18 are respectively arranged at both ends of the bottom of the tank body 1. By opening the hydraulic telescopic rod 19, the tank body 1 can be pushed to rotate around the support 17, so that the carbonized concrete material inside the tank body 1 can be discharged after the sealing cover 10 is opened, which is very convenient. The support 17 and the hydraulic telescopic rod mounting seat 18 are connected to the ground through expansion bolts or anchor bolts.

[0050] The implementation principle of a large tank for carbonizing recycled concrete aggregate is as follows:

[0051] 1. The controller controls the extension and retraction of the hydraulic telescopic rod 19, driving the tank body 1 to rotate with the support 17 as the base point. The end of the tank body 1 rotates upward to add the recycled concrete aggregate to be carbonized, and the end of the tank body 1 tilts downward to dump the carbonized recycled concrete aggregate. The controller controls the extension and retraction of the two hydraulic rods 11 to open and close the sealing cover 10. When it is necessary to add or dump the material in the tank body 1, the sealing cover 10 is opened;

[0052] 2. The carbon dioxide inlet pipe 2 is connected to the carbon dioxide gas tank. The carbon dioxide enters the gas distribution pipe 3 from the carbon dioxide inlet pipe 2 and is evenly distributed to the interior of the tank body 1 from each first air outlet 4 to carbonize the recycled concrete aggregate inside. At the same time, the air pump 9 is turned on and draws the high-concentration carbon dioxide deposited at the bottom of the tank body 1 from the air inlet 8 of the second pipe 7 into the first pipe 5. The carbon dioxide is then dispersed from the upper part of the inner cavity of the tank body 1 into the interior of the tank body 1, thereby ensuring uniform carbonization of the recycled concrete aggregate inside the tank body, thereby improving production quality.

[0053] 3. The air pressure sensor, carbon dioxide concentration sensor 20, temperature sensor and humidity sensor transmit the acquired data to the controller. The controller controls the opening degree of the flow valve according to the received data, thereby controlling the amount of carbon dioxide entering;

[0054] 4. The carbonization process mainly involves carbon dioxide dissolving in the recycled concrete aggregate and combining with the calcium ions inside the recycled concrete aggregate to form calcium carbonate precipitation, which fills the pores of the recycled concrete aggregate, thereby increasing the overall hardness and solid phase volume of the recycled concrete aggregate.

[0055] The embodiment of the present invention also discloses a concrete carbonization method.

[0056] Reference Figure 2, including: step A, the controller controls the hydraulic telescopic rod 19 and the two hydraulic rods 11, rotates the tank body 1 until the end is tilted upward, controls the opening of the sealing cover 10, injects a certain amount of concrete into the tank body 1, closes the sealing cover 10, and rotates the tank body 1 to a horizontal state. The tank body 1 in the horizontal state can be used for carbonization of recycled concrete aggregate; step B, the controller controls the flow valve, and the carbon dioxide gas enters the gas distribution pipe 3 and escapes into the concrete through the first gas outlet 4, thereby uniformly carbonizing the concrete; step C, after the carbonization reaction lasts for a certain period of time, the controller controls the hydraulic telescopic rod 19 and the two hydraulic rods 11, rotates the tank body 1 until the end is tilted downward, controls the opening of the sealing cover 10, and pours out the carbonized concrete.

[0057] Reference Figure 2 The specific operating steps for uniform carbonization of concrete include: the controller controls the air pump 9 to transport the carbon dioxide deposited at the bottom of the tank body 1 to the inside of the first pipe 5; the air pump 9 draws the high-concentration carbon dioxide deposited at the bottom of the tank body 1 into the first pipe 5 from the air inlet 8 of the second pipe 7, and disperses it from the upper part of the inner cavity of the tank body 1 to the inside of the tank body 1, thereby ensuring the uniform carbonization of the recycled concrete aggregate inside the tank body 1.

[0058] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large tank for carbonizing recycled concrete aggregate, characterized by: The invention comprises a tank body (1) and a control module, wherein a dispersed carbon release device and a circulating carbon release device are fixedly connected to the interior of the tank body (1) along the length direction of the tank body (1), the dispersed carbon release device is located in the middle of the inner wall of the tank body (1), and the circulating carbon release device is located at the top and bottom of the inner wall of the tank body (1), one end of the tank body (1) is hingedly connected to a sealing cover (10), an end of the interior of the tank body (1) close to the sealing cover (10) is fixedly connected to a sealing device, the bottom of the tank body (1) is hingedly connected to a support (17), and a hydraulic telescopic rod mounting seat (18) is provided at the bottom of one end of the tank body (1); the control module comprises a controller with a display; The bottom of the tank body (1) is fixedly connected to a carbon dioxide inlet pipe (2), and the dispersed carbon release device includes two air distribution pipes (3), which are symmetrically placed on both sides of the central axis of the tank body (1), and the outer surfaces of the two air distribution pipes (3) are provided with a plurality of first air outlet holes (4) arranged in an array along the length direction thereof, one end of the two air distribution pipes (3) is fixedly connected to an air pressure sensor, and the other end of the two air distribution pipes (3) is fixedly connected to one end of the carbon dioxide inlet pipe (2); a flow valve is fixedly connected to the carbon dioxide inlet pipe (2), and the flow valve is communicatively connected to the controller.

2. A large tank for carbonizing recycled concrete aggregate according to claim 1, characterized in that: Each of the first air outlet holes (4) is provided with a mounting groove inside, and each of the filter plates (22) is provided with a rubber ring adapted to the mounting groove on the outer surface, and each of the rubber rings is snap-fitted to the inside of the corresponding mounting groove.

3. The large tank for carbonizing recycled concrete aggregate according to claim 2, characterized in that: The circulating carbon release device comprises a first pipe (5) and a second pipe (7), wherein the bottom of the first pipe (5) is provided with a plurality of second air outlet holes (6) arranged in an array along the length direction thereof, and the top of the second pipe (7) is provided with a plurality of air inlet holes (8) arranged in an array along the length direction thereof, and the first pipe (5) and the second pipe (7) are respectively located at the top and the bottom of the tank body (1), and filter membranes are fixedly connected to the inlets of the plurality of air inlet holes (8) and the outlets of the plurality of second air outlet holes (6).

4. The large tank for carbonizing recycled concrete aggregate according to claim 3, characterized in that: An air pump (9) is fixedly connected to one end of the inner wall of the tank body (1), and an input end and an output end of the air pump (9) are fixedly connected to one end of the second pipe (7) and one end of the first pipe (5), respectively. The air pump (9) is in communication connection with a controller, and a sampling tube (21) is fixedly connected to the bottom of the tank body (1).

5. The large tank for carbonizing recycled concrete aggregate according to claim 4, characterized in that: The sealing device comprises a sealing plug (12), one side of the sealing plug (12) is fixedly connected to one side of the sealing cover (10), the outer surface of the sealing plug (12) is clamped to the inner wall of the tank body (1), and the side of the sealing plug (12) away from the sealing cover (10) is fixedly connected to a carbon dioxide concentration sensor (20), a temperature sensor and a humidity sensor, and the carbon dioxide concentration sensor (20), the temperature sensor and the humidity sensor are all communicatively connected to the controller; the outer surface of the sealing plug (12) is provided with a plurality of annular sealing grooves (13), and the end of the tank body (1) close to the sealing cover (10) is provided with an annular airbag groove (14) adapted to the annular sealing groove (13).

6. The large tank for carbonizing recycled concrete aggregate according to claim 5, characterized in that: An annular airbag (15) is fixedly connected to the interior of each annular airbag groove (14), and an air inlet and outlet nozzle (16) is provided on the top of the tank body (1), and a plurality of the annular airbags (15) are connected to the air inlet and outlet nozzle (16).

7. The large tank for carbonizing recycled concrete aggregate according to claim 6, characterized in that: Two hydraulic rods (11) are fixedly connected to the outer wall of the tank body (1), and the output ends of the two hydraulic rods (11) are fixedly connected to one side of the sealing cover (10). The two hydraulic rods (11) are symmetrically placed on both sides of the central axis of the tank body (1); a hydraulic telescopic rod (19) is hinged to the top of the hydraulic telescopic rod mounting seat (18), and the output end of the hydraulic telescopic rod (19) is hinged to the outer wall of the tank body (1). The support (17) and the hydraulic telescopic rod mounting seat (18) are both connected to the ground by bolts.

8. A method for carbonizing concrete, characterized in that: The large tank for carbonizing recycled concrete aggregate according to claim 7 is used to carbonize concrete, and the specific implementation steps include: Step A: The controller controls the hydraulic telescopic rod (19) and the two hydraulic rods (11), rotates the tank body (1) until the end is tilted upward, opens the sealing cover (10), injects a certain amount of concrete into the tank body (1), closes the sealing cover (10), and rotates the tank body (1) to a horizontal position; Step B: The controller controls the flow valve, and the carbon dioxide gas enters the gas distribution pipe (3) and escapes into the concrete through the first gas outlet (4), thereby uniformly carbonizing the concrete; Step C: After the carbonization reaction has lasted for a certain period of time, the controller controls the hydraulic telescopic rod (19) and the two hydraulic rods (11), rotates the tank body (1) until the end is tilted downward, opens the sealing cover (10), and pours out the carbonized concrete.

9. A concrete carbonization method according to claim 8, characterized in that: In step B, the specific operation steps of uniformly carbonizing the concrete include: a controller controls the air pump (9) to transport the carbon dioxide deposited at the bottom of the tank (1) to the inside of the first pipe (5).

Images