Carbon dioxide monitoring system and method in a curing vessel

Abstract

This invention discloses a carbon dioxide monitoring system inside a curing vessel, belonging to the field of building materials products. It includes a curing vessel body, which is a horizontally positioned cylindrical structure. Multiple sensor mounting chambers are arranged on the curing vessel body, and these chambers are connected to the internal space of the curing vessel body. Carbon dioxide sensors are installed in the sensor mounting chambers, and the multiple carbon dioxide sensors compensate and correct each other's monitoring data. The curing vessel body also includes a carbon dioxide gas source pipeline, a carbon dioxide gas replenishment pipeline, a carbon dioxide recovery pipeline, a vacuum pump, and sensor components, all connected to the internal space of the curing vessel body. This invention places the carbon dioxide sensors in the sensor mounting chambers, avoiding the influence of external heat sources and changes in the pressure of the internal environment on accuracy. The mutual compensation of multiple carbon dioxide sensors improves the accuracy of carbon dioxide concentration detection and extends the service life of the carbon dioxide sensors.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building material products, in particular to a curing kettle carbon dioxide monitoring system and method. BACKGROUND

[0002] The carbon dioxide generated in the industrial production process or collected by other means is applied to the curing of bricks to realize mineralization reaction. The strength of the reinforcement is enhanced, and the utilization of carbon dioxide gas (carbon capture, utilization and storage) is also realized. The basic principle is that the carbon dioxide gas penetrates through the fine pore diameter on the surface of the product and reacts with the calcium and magnesium alkaline components inside to generate carbonate to achieve carbon dioxide gas sequestration, while also enhancing the mechanical properties of the concrete product. This process is called mineralization curing.

[0003] Under natural conditions, the curing piece (mineralization raw material) directly contacts with carbon dioxide gas to occur mineralization reaction (direct dry method). However, under normal temperature and pressure conditions, the reaction rate is very slow, which is not suitable for industrial large-scale production. Therefore, in order to accelerate the reaction rate and improve the production efficiency of mineralization curing, even to realize the recycling of the remaining carbon dioxide gas after reaction, the temperature, humidity, and carbon dioxide gas concentration need to be monitored in real time and dynamically adjusted.

[0004] At present, in the field of carbon dioxide mineralization curing, the latest group standard T / CIECCPA 017-2022 "Carbon dioxide mineralization curing preparation of high-value building materials key equipment" clearly defines the structure and involvement of key equipment in each stage of the carbon dioxide mineralization curing process, and gives a relatively complete typical carbon dioxide mineralization curing preparation of high-value building materials key equipment process. However, it does not describe the regulation method for carbon dioxide gas concentration and pressure parameters during the carbon dioxide gas mineralization reaction process.

[0005] At present, the carbon dioxide concentration in the reaction process is mainly monitored by sensors. By monitoring the carbon dioxide concentration and pressure, the carbon dioxide gas is treated in batches and then put into the curing kettle for curing. However, the number and arrangement points of the sensors are relatively single, resulting in a lack of monitoring accuracy. SUMMARY

[0006] The present application provides a curing kettle carbon dioxide monitoring system and method, which improves the accuracy of carbon dioxide concentration detection and the service life of the carbon dioxide sensor.

[0007] The technical scheme provided by the present application is as follows:

[0008] A curing kettle carbon dioxide monitoring system, comprising a curing kettle main body, the curing kettle main body is a horizontally arranged cylindrical structure, wherein:

[0009] The curing kettle body is provided with a plurality of sensor mounting chambers which are in communication with the internal space of the curing kettle body, and each of the sensor mounting chambers is provided with a carbon dioxide sensor, each of the carbon dioxide sensors is connected with the control console and the power supply, and the plurality of carbon dioxide sensors compensate and correct the monitoring data with each other.

[0010] The curing kettle body is provided with a carbon dioxide gas source pipeline, a carbon dioxide gas supplement pipeline, a carbon dioxide recovery pipeline, a vacuum pump and a sensor assembly which are in communication with the internal space of the curing kettle body; the sensor assembly comprises humidity, temperature and pressure sensors, and the sensor assembly is connected with the control console.

[0011] Further, the sensor mounting chambers are located on the outer side wall of the curing kettle body, the sensor mounting chambers are isolated from the external environment, and the sensor mounting chambers are in communication with the internal space of the curing kettle body through the air holes on the side wall of the curing kettle body.

[0012] Further, the probe of the carbon dioxide sensor faces the air hole.

[0013] Further, the number of the sensor mounting chambers is four, two of which are located on the upper side of the side wall of the curing kettle body, and the other two are located on the lower side of the side wall of the curing kettle body, and the carbon dioxide sensors in the two sensor mounting chambers on the lower side compensate and correct the monitoring data.

[0014] Further, the two sensor mounting chambers on the upper side are symmetrically arranged, and the two sensor mounting chambers on the lower side are symmetrically arranged.

[0015] Further, the carbon dioxide sensors are connected with the control console and the power supply through data transmission and power supply lines.

[0016] Further, the carbon dioxide gas source pipeline, the carbon dioxide gas supplement pipeline and the carbon dioxide recovery pipeline are respectively provided with a gas source pipeline electromagnetic valve, a supplement pipeline electromagnetic valve and a recovery pipeline electromagnetic valve.

[0017] Further, the curing kettle body is provided with a curing test piece rack in the internal space.

[0018] Further, the curing kettle body is arranged on a curing kettle support.

[0019] A use method of the carbon dioxide monitoring system in the curing kettle as described above, the method comprising:

[0020] S1: placing the curing test piece on the curing test piece rack, closing the curing kettle body and ensuring the sealing, using the vacuum pump to draw the curing kettle body to vacuum and maintaining for a certain time;

[0021] S2: The carbon dioxide sensor transmits a signal to the control console, which controls the opening of the solenoid valve of the gas source pipeline. Sufficient carbon dioxide gas enters the main body of the curing tank through the carbon dioxide gas source pipeline to carry out the mineralization reaction. At the same time, the humidity, temperature and pressure sensors control the reaction humidity, temperature and pressure in real time.

[0022] S3: After the reaction is complete, open the solenoid valve of the recovery pipeline. The remaining carbon dioxide gas enters the external carbon dioxide gas regulating chamber through the carbon dioxide recovery pipeline for further adjustment of concentration and pressure.

[0023] S4: After removing the curing specimen, place the next batch of curing specimens in the curing vessel and evacuate the main body of the curing vessel to a vacuum. Open the solenoid valve of the gas replenishment pipeline. The carbon dioxide gas with adjusted concentration and pressure enters the main body of the curing vessel through the carbon dioxide gas replenishment pipeline to carry out the mineralization reaction. The on / off state of the solenoid valve of the gas replenishment pipeline is dynamically adjusted by the reading of the carbon dioxide sensor to ensure that an appropriate amount of carbon dioxide gas enters the main body of the curing vessel through the carbon dioxide gas source pipeline in a timely manner, thereby realizing the dynamic adjustment of the carbon dioxide gas concentration during the reaction process.

[0024] S5: Repeat S4 to achieve online monitoring and recycling of carbon dioxide gas concentration.

[0025] The present invention has the following beneficial effects:

[0026] This invention employs multiple carbon dioxide sensors to monitor the carbon dioxide gas in the curing vessel during and after the mineralization reaction. The monitoring data is used to control the carbon dioxide gas source and related pipeline valves, dynamically adjusting the carbon dioxide concentration within the vessel to ensure the mineralization reaction rate and achieve carbon dioxide gas recycling. The carbon dioxide sensors are housed in a sensor installation chamber, avoiding the influence of external heat sources and pressure changes within the vessel on accuracy. Multiple sensors compensate for each other, preventing the impact of rising hot air on accuracy, thus improving the accuracy of carbon dioxide concentration detection and extending the lifespan of the sensors. This invention effectively meets the requirements for dynamic monitoring and error compensation of carbon dioxide concentration during specimen curing. Attached Figure Description

[0027] Fig. 1 This is a front view of the carbon dioxide monitoring system inside the curing vessel of the present invention;

[0028] Fig. 2 This is a cross-sectional view of the carbon dioxide monitoring system inside the curing vessel of the present invention;

[0029] Fig. 3 A three-dimensional view of the main body of the curing vessel and its auxiliary structures. Detailed Implementation

[0030] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0031] This invention provides a carbon dioxide monitoring system for a curing vessel, such as... Figs. 1-3 As shown, it includes a curing vessel body 01, which is a horizontally positioned cylindrical structure, wherein:

[0032] The curing vessel body 01 is equipped with multiple sensor installation chambers 01-1, 01-2, 01-3, and 01-4, which are connected to the internal space of the curing vessel body 01. Each sensor installation chamber 01-1, 01-2, 01-3, and 01-4 is equipped with a carbon dioxide sensor 02, 02-1, 02-2, or 02-3, which can be an infrared carbon dioxide sensor. Each carbon dioxide sensor 02, 02-1, 02-2, and 02-3 is connected to the control console 07 and the power supply 08. The multiple carbon dioxide sensors 02, 02-1, 02-2, and 02-3 compensate and correct each other's monitoring data.

[0033] The curing vessel body 01 is equipped with a carbon dioxide gas source pipe 11, a carbon dioxide gas replenishment pipe 09, a carbon dioxide recovery pipe 10, a vacuum pump 12, and a sensor assembly 13, which are connected to the internal space of the curing vessel body 01. The sensor assembly 13 includes humidity, temperature, and pressure sensors, and the sensor assembly 13 is connected to the control console 07.

[0034] Specifically, the carbon dioxide gas source pipeline 11 is connected to the air inlet of the curing vessel body 01, the air outlet of the curing vessel body 01 is connected to the recovery port of the external carbon dioxide gas conditioning and storage chamber through the carbon dioxide recovery pipeline 10, and the air replenishment port of the curing vessel body 01 is connected to the air outlet of the external carbon dioxide gas conditioning and storage chamber through the carbon dioxide gas replenishment pipeline 09.

[0035] This invention ensures that the internal carbon dioxide sensor is decoupled from external heat sources through a sensor mounting chamber, avoiding thermal stress on the carbon dioxide sensor and thus preventing a decrease in accuracy. Furthermore, considering that rising hot air can affect a group of sensors at higher locations, this invention places multiple carbon dioxide sensors in different positions to correct and compensate for the monitoring data.

[0036] When the pressure inside the reactor changes, the carbon dioxide concentration reading of the carbon dioxide sensor also changes. For example, airflow in the pipeline can cause pressure drops, back pressure, and dynamic fluctuations, leading to increased sensor noise and decreased accuracy. Therefore, this invention installs the carbon dioxide sensors separately within a sensor mount, minimizing direct exposure of the sensor probes to the airflow. In-reactor mounting also avoids the potential for temperature gradients and reduced sensor lifespan that could result from direct sunlight exposure.

[0037] This invention employs multiple carbon dioxide sensors to monitor the carbon dioxide gas in the curing vessel during and after the mineralization reaction. The monitoring data is used to control the carbon dioxide gas source and related pipeline valves, dynamically adjusting the carbon dioxide concentration within the vessel to ensure the mineralization reaction rate and achieve carbon dioxide gas recycling. The carbon dioxide sensors are housed in a sensor installation chamber, avoiding the influence of external heat sources and pressure changes within the vessel on accuracy. Multiple sensors compensate for each other, preventing the impact of rising hot air on accuracy, thus improving the accuracy of carbon dioxide concentration detection and extending the lifespan of the sensors. This invention effectively meets the requirements for dynamic monitoring and error compensation of carbon dioxide concentration during specimen curing.

[0038] Specifically, sensor mounting chambers 01-1, 01-2, 01-3, and 01-4 are located on the outer side wall of the curing vessel body 01, isolating them from the external environment. These chambers are connected to the internal space of the curing vessel body 01 through vents on its side wall. The probes 02a, 02-1a, 02-2a, and 02-3a of the carbon dioxide sensors 02, 02-1, 02-2, and 02-3 face the vents. This avoids direct exposure of the sensor probes 02a, 02-1a, 02-2a, and 02-3a to the airflow, improving detection accuracy.

[0039] Preferably, there are four sensor installation chambers 01-1, 01-2, 01-3, and 01-4. Two sensor installation chambers 01-1 and 01-2 are located on the upper side of the side wall of the curing vessel body 01, and the other two sensor installation chambers 01-3 and 01-4 are located on the lower side of the side wall of the curing vessel body 01. The carbon dioxide sensors 02-2 and 02-3 in the two lower sensor installation chambers 01-3 and 01-4 compensate and correct the monitoring data.

[0040] The two sensor mounting chambers 01-1 and 01-2 on the upper side are symmetrically arranged, and the two sensor mounting chambers 01-3 and 01-4 on the lower side are symmetrically arranged. For example, four sensor mounting chambers are evenly arranged along the outer perimeter at half the length of the curing vessel body.

[0041] This invention features four relatively isolated sensor mounting chambers on the main body 01 of the curing vessel, into which four infrared carbon dioxide sensors are installed. The four sensors are divided into two groups, with each group providing mutual compensation and correction for the monitoring data. Considering that rising hot air may affect the upper group of sensors, the bottom group of sensors on the curing vessel provides compensation and correction for the monitoring data. The number and location of the carbon dioxide sensors 02, 02-1, 02-2, and 02-3 ensure monitoring accuracy.

[0042] The aforementioned carbon dioxide sensors 02, 02-1, 02-2, and 02-3 are connected to the control console 07 and power supply 08 via data transmission and power supply lines 03. Humidity, temperature, and pressure sensor monitoring data are wirelessly transmitted remotely to the control console 07. Optionally, one set of control consoles 07 can correspond to one set of curing vessel bodies and their associated sensors; multiple sets of control consoles can be arranged in parallel to correspond to multiple curing vessel bodies.

[0043] For ease of control, the carbon dioxide source pipeline 11, the carbon dioxide replenishment pipeline 09, and the carbon dioxide recovery pipeline 10 are respectively equipped with a source pipeline solenoid valve 11-1, a replenishment pipeline solenoid valve 09-1, and a recovery pipeline solenoid valve 10-1. These solenoid valves are controlled to open and close via the control console 07. Real-time monitoring of carbon dioxide concentration data and real-time control of the solenoid valves in each pipeline using sensor data also make the recycling of carbon dioxide gas after the reaction more feasible.

[0044] To facilitate the placement of the curing specimen 05, a curing specimen storage rack 06 is provided inside the curing vessel body 01. The curing vessel body 01 is mounted on the curing vessel support 04.

[0045] This invention also provides a method for using the aforementioned carbon dioxide monitoring system inside the curing vessel, the method comprising:

[0046] S1: In the initial stage of the mineralization reaction, the curing specimen 05 is placed on the curing specimen rack 06, the curing vessel body 01 is closed and sealed, and the vacuum pump 12 is used to evacuate the curing vessel body 01 to a vacuum and maintain it for a certain period of time. At this time, the inside of the curing vessel body 01 is in a vacuum state, and the carbon dioxide concentration is far below the threshold required for the reaction.

[0047] S2: Carbon dioxide sensors 02, 02-1, 02-2, and 02-3 transmit signals to the control console 07 via sensor data transmission and power supply line 03, controlling the opening of the gas source pipeline solenoid valve 11-1. Sufficient carbon dioxide gas enters the curing vessel body 01 through the carbon dioxide gas source pipeline 11 to carry out the mineralization reaction. At the same time, humidity, temperature, and pressure sensors control the reaction humidity, temperature, and pressure in real time.

[0048] S3: After the reaction is complete, open the solenoid valve 10-1 of the recovery pipeline. The remaining carbon dioxide gas enters the external carbon dioxide gas regulating chamber through the carbon dioxide recovery pipeline 10 for readjustment of concentration and pressure.

[0049] S4: After removing the curing specimen, place the next batch of curing specimens in the container and evacuate the curing vessel body 01 to a vacuum. Open the solenoid valve 09-1 of the gas replenishment pipeline. The carbon dioxide gas, after its concentration and pressure have been readjusted, enters the curing vessel body 01 through the carbon dioxide gas replenishment pipeline 09 to carry out the mineralization reaction. The on / off state of the solenoid valve 09-1 of the gas replenishment pipeline is dynamically adjusted by reading the carbon dioxide sensors 02, 02-1, 02-2, and 02-3. This ensures that an appropriate amount of carbon dioxide gas enters the curing vessel body 01 through the carbon dioxide gas source pipeline 11 in a timely manner, thereby achieving dynamic adjustment of the carbon dioxide gas concentration during the reaction process.

[0050] S5: Repeat S4 to achieve online monitoring and recycling of carbon dioxide gas concentration.

[0051] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A carbon dioxide monitoring system for a curing vessel, characterized in that, Includes a curing vessel body, wherein the curing vessel body is a horizontally arranged cylindrical structure, wherein: The curing vessel body is provided with multiple sensor installation chambers, which are connected to the internal space of the curing vessel body. Each sensor installation chamber is equipped with a carbon dioxide sensor, and each carbon dioxide sensor is connected to the control console and power supply. Multiple carbon dioxide sensors compensate and correct each other's monitoring data. The curing vessel body is equipped with a carbon dioxide gas source pipeline, a carbon dioxide gas replenishment pipeline, a carbon dioxide recovery pipeline, a vacuum pump, and a sensor assembly that are connected to the internal space of the curing vessel body; the sensor assembly includes humidity, temperature, and pressure sensors, and the sensor assembly is connected to the control console; The sensor installation chamber is located on the outside of the side wall of the curing vessel body. The sensor installation chamber is isolated from the external environment. The sensor installation chamber is connected to the internal space of the curing vessel body through a vent on the side wall of the curing vessel body. The probe of the carbon dioxide sensor faces the vent. The number of sensor installation chambers is four, with two sensor installation chambers located on the upper side of the side wall of the curing vessel body and the other two sensor installation chambers located on the lower side of the side wall of the curing vessel body. The carbon dioxide sensors in the two lower sensor installation chambers compensate and correct the monitoring data.

2. The carbon dioxide monitoring system inside the curing vessel according to claim 1, characterized in that, The two sensor mounting chambers on the upper side are symmetrically arranged, and the two sensor mounting chambers on the lower side are symmetrically arranged.

3. The carbon dioxide monitoring system inside the curing vessel according to claim 1, characterized in that, The carbon dioxide sensor is connected to the control console and power supply via data transmission and power lines.

4. The carbon dioxide monitoring system inside the curing vessel according to any one of claims 1-3, characterized in that, The carbon dioxide gas source pipeline, carbon dioxide gas replenishment pipeline, and carbon dioxide recovery pipeline are respectively equipped with a gas source pipeline solenoid valve, a replenishment pipeline solenoid valve, and a recovery pipeline solenoid valve.

5. The carbon dioxide monitoring system inside the curing vessel according to claim 4, characterized in that, The curing vessel body has a curing specimen rack inside its interior space.

6. The carbon dioxide monitoring system inside the curing vessel according to claim 5, characterized in that, The main body of the curing vessel is mounted on the curing vessel support.

7. The method of using the carbon dioxide monitoring system inside the curing vessel as described in claim 5, characterized in that, The method includes: S1: Place the curing specimen on the curing specimen rack, close the curing autoclave and ensure it is sealed, use a vacuum pump to evacuate the inside of the curing autoclave to a vacuum and maintain it for a certain period of time; S2: The carbon dioxide sensor transmits a signal to the control console, which controls the opening of the solenoid valve of the gas source pipeline. Sufficient carbon dioxide gas enters the main body of the curing tank through the carbon dioxide gas source pipeline to carry out the mineralization reaction. At the same time, the humidity, temperature and pressure sensors control the reaction humidity, temperature and pressure in real time. S3: After the reaction is complete, open the solenoid valve of the recovery pipeline. The remaining carbon dioxide gas enters the external carbon dioxide gas regulating chamber through the carbon dioxide recovery pipeline for further adjustment of concentration and pressure. S4: After removing the curing specimen, place the next batch of curing specimens in the curing vessel and evacuate the main body of the curing vessel to a vacuum. Open the solenoid valve of the gas replenishment pipeline. The carbon dioxide gas with adjusted concentration and pressure enters the main body of the curing vessel through the carbon dioxide gas replenishment pipeline to carry out the mineralization reaction. The on / off state of the solenoid valve of the gas replenishment pipeline is dynamically adjusted by the reading of the carbon dioxide sensor to ensure that an appropriate amount of carbon dioxide gas enters the main body of the curing vessel through the carbon dioxide gas source pipeline in a timely manner, thereby realizing the dynamic adjustment of the carbon dioxide gas concentration during the reaction process. S5: Repeat S4 to achieve online monitoring and recycling of carbon dioxide gas concentration.

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