Inflation method and application of carbon sequestration vacuum mixer

Abstract

The invention discloses an inflation method and application of a carbon sequestration vacuum mixer. The inflation method of the carbon sequestration vacuum mixer comprises the following steps: opening the top sealing device of the carbon sequestration vacuum mixer, feeding raw materials, closing and sealing, vacuumizing, inflating to positive pressure, and controlling air pressure, so as to promote mixing of gas and the raw materials, and realize a carbon sequestration effect. According to the gas filling method and application of the carbon sequestration vacuum mixer, the injection amount and injection start and stop of carbon dioxide are conveniently controlled, operation is easy, use is convenient, gas injection start and stop are controlled through the flow value of injected gas, gas consumption is calculated in an auxiliary mode through pressure changes, gas is absorbed by materials while being injected, and before gas injection is stopped, gas injection is stopped. The amount of the absorbed gas cannot be measured, so that calculation of the gas consumption is influenced, the gas consumption in the carbon sequestration vacuum stirring process can be calculated by using the calculation mode, and errors are reduced.

Description

Technical Field

[0001] The invention relates to the field of carbon-fixing vacuum mixers, and in particular to an inflation method and application of a carbon-fixing vacuum mixer. Background Art

[0002] With the vigorous promotion and popularization of "energy conservation and emission reduction, reducing carbon emissions", a large amount of carbon dioxide will be generated during the traditional concrete mixing process. In order to absorb carbon dioxide and reduce the use of cement during concrete mixing, a corresponding carbon fixation vacuum mixer has been developed. During the mixing process, it is necessary not only to fill the cylinder with carbon dioxide to a positive pressure of 0.3Mpa, but also to control the injection amount of carbon dioxide and the start and stop of the injection, but also to calculate the gas consumption during the carbon fixation vacuum mixing process to achieve the carbon fixation effect during concrete mixing.

[0003] The Chinese patent with the authorization announcement number CN114734533B discloses a concrete mixing device and method for strengthening carbon fixation, which includes a main mixing kettle and a pre-mixing kettle, wherein the pre-mixing kettle includes a cylinder, a material door mechanism, and a material lifting mechanism. Through a specific structural design, the added cement powder is pre-treated in a high-humidity, high-pressure, and high-carbon dioxide environment to generate a large number of calcium carbonate nuclei, so that calcium carbonate crystals can be quickly generated in the main mixing kettle, the reaction speed is increased, and the strength of concrete is strengthened. Although the patent also focuses on the carbon fixation problem in the concrete mixing process, it mainly focuses on strengthening the carbonization effect through the design of the pre-mixing kettle, and does not provide a method for accurately controlling the amount of carbon dioxide injected and the start and stop of injection, nor does it involve the calculation of gas consumption.

[0004] In view of the functional requirements of the carbon-fixing vacuum mixer, it is necessary to design a method to accurately control the amount of carbon dioxide injection and the start and stop of injection, as well as a method to calculate the gas consumption, which can not only improve the environmental performance of concrete, but also improve its working performance and compressive strength. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an inflation method and application of a carbon fixation vacuum mixer, which solves the problems of controlling the injection amount of carbon dioxide and starting and stopping the injection during carbon fixation mixing of concrete and the need to calculate the gas consumption during carbon fixation vacuum mixing.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for charging a carbon fixation vacuum mixer, comprising the following steps:

[0007] S1: Open the top sealing device of the carbon-fixing vacuum mixer, and feed the mixed raw materials into the interior of the carbon-fixing vacuum mixer through the top opening. After the feeding is completed, control the top sealing device to close, and control the vacuum pumping equipment to extract the internal air pressure of the carbon-fixing vacuum mixer to 0 MPa;

[0008] S2: Inflate the interior of the carbon fixation vacuum mixer. When the gas enters from the first manual ball valve of the upper chamber and the fifth manual ball valve of the lower chamber, close the second manual ball valve, the fourth manual ball valve and the seventh manual ball valve;

[0009] S3: Open the first manual ball valve and adjust the intake pressure through the pressure reducing valve and the pressure gauge;

[0010] S4: Open the third manual ball valve, the fifth manual ball valve, and the sixth manual ball valve;

[0011] S5: When the pipeline solenoid valve receives the inflation signal, it opens for inflation, and the flow meter reads the inflation flow. When the inflation flow reaches the set value, the closing signal is fed back to the pipeline solenoid valve, and the pipeline solenoid valve is closed to stop inflation. At this time, the internal air pressure of the carbon-fixing vacuum mixer is in a positive pressure state, and the internal air pressure value of the carbon-fixing vacuum mixer is recorded at this time;

[0012] S6: The gas value absorbed by the reaction can be obtained by subtracting the gas pressure value after stirring from the gas pressure value before stirring. Through reverse calculation, the gas pressure value inside the carbon fixation vacuum mixer after stirring can be calculated from the existing gas pressure value before stirring and the value absorbed by the raw materials to be stirred;

[0013] S7: Control the stirring device of the carbon-fixing vacuum mixer to perform stirring. During the stirring process, gas penetrates into the raw material, so that the internal air pressure of the carbon-fixing vacuum mixer decreases. When the air pressure decreases to the calculated air pressure value, the stirring is stopped;

[0014] S8: Open the pressure relief valve to relieve the pressure inside the carbon fixation vacuum mixer, complete the aeration and mixing of the raw materials, and control the discharge.

[0015] Preferably, two gas injection pipes are installed on the front side wall of the carbon fixing vacuum mixer and at an upper position. The front ends of the two gas injection pipes are respectively installed with a sixth manual ball valve and a seventh manual ball valve for manually controlling the internal switches of the gas injection pipes. The gas injection pipe on the rear side of the seventh manual ball valve is provided with a pipeline solenoid valve for controlling the internal switches of the pipeline and a flow meter for calculating the flow rate. A three-way pipe is provided at the front end of the sixth manual ball valve, and a pressure gauge, a pressure reducing valve and a first manual ball valve are installed in sequence at one end of the three-way pipe extending upward. The second manual ball valve is installed at the three-way pipe at the front end of the seventh manual ball valve. At the top end of the three-way pipe in front of the sixth manual ball valve and the seventh manual ball valve, the third manual ball valve and the fourth manual ball valve are respectively installed with a third manual ball valve and a fourth manual ball valve at their bottom ends, the third manual ball valve and the fourth manual ball valve are connected through a three-way merging pipe, a fifth manual ball valve is installed near the lower end of the three-way merging pipe, a bottom meter is installed at the rear end of the fifth manual ball valve, the rear end of the bottom meter is connected with the bottom unloading chamber of the carbon fixing vacuum mixer through a pipe, a pressure sensor is installed on the front side wall of the carbon fixing vacuum mixer, and the sensing head of the pressure sensor extends into the interior of the carbon fixing vacuum mixer.

[0016] Preferably, the top of the carbon-fixing vacuum mixer is provided with a top opening for feeding materials into the carbon-fixing vacuum mixer and a top sealing device for sealing the top opening.

[0017] Preferably, the upper end of the first manual ball valve is connected to the carbon dioxide supply pipeline, and the upper end of the second manual ball valve is connected to the nitrogen supply pipeline.

[0018] Preferably, the pressurized stirring environment in S5 is 0.3 MPa.

[0019] Preferably, the numerical value of the gas absorbed by the reaction in S6 is calculated as follows: gas filling amount*gas pressure drop value*10=the numerical value of the gas absorbed by the reaction.

[0020] The present invention provides an aeration method and application of a carbon fixation vacuum mixer, which has the following beneficial effects:

[0021] 1. After the first ball valve is opened, twist the pressure reducing valve to adjust the intake pressure. When the pipeline solenoid valve receives the inflation signal, it starts to inflate. When the gas injection volume reaches the set value, the pipeline solenoid valve closes and stops inflating. It is easy to control the injection volume of carbon dioxide and the start and stop of injection. The operation is simple and easy to use.

[0022] 2. The flow rate of the injected gas is used to control the start and stop of the gas injection, and the pressure change is used to assist in calculating the gas consumption. While the gas is injected, it will be absorbed by the material. Before the gas injection stops, the amount of absorbed gas cannot be measured, which affects the calculation of the gas consumption. This calculation method can be used to calculate the gas consumption during the carbon fixation vacuum stirring process to reduce errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A front structural schematic diagram of a carbon-fixing vacuum mixer and an aeration method for the carbon-fixing vacuum mixer according to the present invention;

[0024] Figure 2 This is a schematic diagram of the right side structure of a carbon-fixing vacuum mixer according to an inflation method of the carbon-fixing vacuum mixer and an application of the carbon-fixing vacuum mixer described in the present invention.

[0025] The symbols in the accompanying drawings are described as follows:

[0026] 1. First manual ball valve; 2. Pressure reducing valve; 3. Pressure gauge; 4. Pipeline solenoid valve; 5. Flow meter; 6. Pressure sensor; 7. Second manual ball valve; 8. Third manual ball valve; 9. Fourth manual ball valve; 10. Fifth manual ball valve; 11. Sixth manual ball valve; 12. Seventh manual ball valve. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] See also Figure 1-Figure 2 The present invention provides a technical solution: a method for charging a carbon fixation vacuum mixer, comprising the following steps:

[0029] S1: Open the top sealing device of the carbon-fixing vacuum mixer, and feed the mixed raw materials into the interior of the carbon-fixing vacuum mixer through the top opening. After the feeding is completed, control the top sealing device to close, and control the vacuum pumping equipment to extract the internal air pressure of the carbon-fixing vacuum mixer to 0 MPa;

[0030] S2: Inflate the interior of the carbon fixation vacuum mixer. When the gas enters from the first manual ball valve 1 of the upper chamber and the fifth manual ball valve 10 of the lower chamber, close the second manual ball valve 7, the fourth manual ball valve 9 and the seventh manual ball valve 12;

[0031] S3: Open the first manual ball valve 1 and adjust the intake pressure through the pressure reducing valve 2 and the pressure gauge 3;

[0032] S4: Open the third manual ball valve 8, the fifth manual ball valve 10, and the sixth manual ball valve 11;

[0033] S5: When the pipeline solenoid valve 4 receives the inflation signal, it opens for inflation, and the flow meter 5 reads the inflation flow. When the inflation flow reaches the set value, the closing signal is fed back to the pipeline solenoid valve 4, and the pipeline solenoid valve 4 is closed to stop inflation. At this time, the internal air pressure of the carbon-fixing vacuum mixer is in a positive pressure state, and the internal air pressure value of the carbon-fixing vacuum mixer is recorded at this time;

[0034] S6: The gas value absorbed by the reaction can be obtained by subtracting the gas pressure value after stirring from the gas pressure value before stirring. Through reverse calculation, the gas pressure value inside the carbon fixation vacuum mixer after stirring can be calculated from the existing gas pressure value before stirring and the value absorbed by the raw materials to be stirred;

[0035] S7: Control the stirring device of the carbon-fixing vacuum mixer to perform stirring. During the stirring process, gas penetrates into the raw material, so that the internal air pressure of the carbon-fixing vacuum mixer decreases. When the air pressure decreases to the calculated air pressure value, the stirring is stopped;

[0036] S8: Open the pressure relief valve to relieve the pressure inside the carbon fixation vacuum mixer, complete the aeration and mixing of the raw materials, and control the discharge.

[0037] In the present embodiment, two gas injection pipes are installed on the front side wall of the carbon fixation vacuum mixer and at an upper position. The front ends of the two gas injection pipes are respectively installed with a sixth manual ball valve 11 and a seventh manual ball valve 12 for manually controlling the internal switches of the gas injection pipes. The gas injection pipe on the rear side of the seventh manual ball valve 12 is provided with a pipeline solenoid valve 4 for controlling the internal switches of the pipeline and a flow meter 5 for calculating the flow rate. A three-way pipe is provided at the front end of the sixth manual ball valve 11, and a pressure gauge 3, a pressure reducing valve 2 and a first manual ball valve 1 are installed in sequence at one end of the three-way pipe extending upward. The second manual ball valve 7 is installed at the front end of the seventh manual ball valve 12 At the top end of the three-way pipe, the third manual ball valve 8 and the fourth manual ball valve 9 are respectively installed at the bottom ends of the three-way pipe in front of the sixth manual ball valve 11 and the seventh manual ball valve 12, and the bottom ends of the third manual ball valve 8 and the fourth manual ball valve 9 are connected through a three-way merging pipe, and a fifth manual ball valve 10 is installed at the lower end of the three-way merging pipe. A bottom metering meter is installed at the rear end of the fifth manual ball valve 10, and the rear end of the bottom metering meter is connected with the bottom unloading chamber of the carbon fixing vacuum mixer through a pipe. A pressure sensor 6 is installed on the front side wall of the carbon fixing vacuum mixer 1, and the sensing head of the pressure sensor 6 extends into the interior of the carbon fixing vacuum mixer.

[0038] Specifically, according to the instructions Figure 1-2 As shown, when gas is inflated from the first manual ball valve 1 in the upper cavity and the fifth manual ball valve 10 in the lower cavity, the second manual ball valve 7, the fourth manual ball valve 9, and the seventh manual ball valve 12 are closed, and the first manual ball valve 1 is opened. The intake pressure is adjusted by the pressure reducing valve 2 and the pressure gauge 3, and then the third manual ball valve 8, the fifth manual ball valve 10, and the sixth manual ball valve 11 are opened. When the pipeline solenoid valve 4 receives the inflation signal, it opens for inflation, and the flowmeter 5 reads the inflation flow. When the inflation flow reaches the set value, the closing signal is fed back to the pipeline solenoid valve 4, and the pipeline solenoid valve 4 is closed to stop inflation, thereby completing the inflation work.

[0039] In this embodiment, the top of the carbon-fixing vacuum mixer is provided with a top opening for feeding materials into the carbon-fixing vacuum mixer and a top sealing device for sealing the top opening.

[0040] Specifically, raw materials are added into the carbon-fixing vacuum mixer through the top opening. After the feeding is completed, the top sealing device is controlled to seal the top of the carbon-fixing vacuum mixer.

[0041] In this embodiment, the upper end of the first manual ball valve 1 is communicated with the carbon dioxide supply pipeline, and the upper end of the second manual ball valve 7 is communicated with the nitrogen supply pipeline.

[0042] Specifically, carbon dioxide is injected into the carbon-fixing vacuum mixer through the first manual ball valve 1 , and nitrogen is injected into the carbon-fixing vacuum mixer through the second manual ball valve 7 .

[0043] In this embodiment, the pressurized mixing environment in S5 is 0.3 MPa, which is used for concrete to effectively absorb carbon dioxide and achieve carbon fixation.

[0044] Specifically, the calculation method of the gas value absorbed by the reaction in S6 is: gas filling amount*gas pressure drop value*10=reaction absorption value.

[0045] In this embodiment, the total volume of the cavity is 652L, 35L of material is added, and 617L of carbon dioxide is inflated (652-35=617L). The initial pressure value inside the cavity is 0MPa. After adding and stirring, 617L of carbon dioxide is inflated in flow mode. Theoretically, the pressure after inflation is 0.1MPa. For example, after stirring for 2 minutes, the pressure drops to 0.058MPa, then the carbon dioxide consumed and absorbed is 0.1-0.058=0.042MPa, which is converted into a flow rate of 617*0.042*10=259.14L. This calculation method uses the pressure value after initial inflation minus the pressure value after reaction absorption to obtain the pressure value reduced during the reaction absorption process, and then converts the pressure value into a flow value, thereby calculating the gas consumption during the reaction absorption process.

[0046] Working principle of aeration and stirring: open the top sealing device of the carbon-fixing vacuum mixer, and feed the stirred raw materials into the interior of the carbon-fixing vacuum mixer through the top opening. After the feeding is completed, control the top sealing device to close, control the vacuum equipment to extract the internal air pressure of the carbon-fixing vacuum mixer to 0MPa, and then connect the carbon dioxide supply pipeline with the first manual ball valve 1. When the gas enters from the first manual ball valve 1 of the upper cavity and the fifth manual ball valve 10 of the lower cavity, close the second manual ball valve 7, the fourth manual ball valve 9, and the seventh manual ball valve 12, open the first manual ball valve 1, adjust the intake pressure through the pressure reducing valve 2 and the pressure gauge 3, and then open the third manual ball valve 8, the fifth manual ball valve 10, and the sixth manual ball valve 11. When the pipeline solenoid valve 4 receives the inflation signal, it opens the inflation, and the flowmeter 5 reads the inflation flow. When the inflation flow reaches When it reaches the set value, the closing signal is fed back to the pipeline solenoid valve 4, the pipeline solenoid valve 4 is closed, and the inflation is stopped. At this time, the internal air pressure of the carbon-fixing vacuum mixer is in a positive pressure state, and the internal air pressure value of the carbon-fixing vacuum mixer is recorded at this time. The gas value absorbed by the reaction can be obtained by subtracting the air pressure value after stirring from the air pressure value before stirring. Through reverse calculation, the internal air pressure value of the carbon-fixing vacuum mixer after stirring can be calculated from the existing air pressure value before stirring and the value absorbed by the raw material to be stirred. The stirring equipment of the carbon-fixing vacuum mixer is controlled to perform stirring. During the stirring process, the gas penetrates into the raw material, so that the internal air pressure of the carbon-fixing vacuum mixer is reduced. When the air pressure is reduced to the calculated air pressure value, the stirring is stopped, and the pressure relief valve is opened to relieve the pressure inside the carbon-fixing vacuum mixer. The inflation and stirring of the raw materials are completed, and the discharge is controlled.

[0047] Calculation principle: The total volume of the cavity is 652L, 35L of material is added, and 617L of carbon dioxide is inflated (652-35=617L). The initial internal pressure of the cavity after vacuuming is 0MPa. After adding materials and stirring, 617L of carbon dioxide is inflated in flow mode. Theoretically, the pressure after inflation is 0.1MPa. For example, after 2 minutes of stirring, the pressure drops to 0.058MPa, then the carbon dioxide consumed and absorbed is 0.1-0.058=0.042MPa, which is converted into a flow rate of 617*0.042*10=259.14L. This calculation method uses the pressure value after initial inflation minus the pressure value after reaction absorption to obtain the pressure value reduced during the reaction absorption process, and then converts the pressure value into a flow value, thereby calculating the gas consumption during the reaction absorption process.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for charging a carbon fixation vacuum mixer, characterized in that: The following steps are involved: S1: Open the top sealing device of the carbon-fixing vacuum mixer, and feed the mixed raw materials into the interior of the carbon-fixing vacuum mixer through the top opening. After the feeding is completed, control the top sealing device to close, and control the vacuum pumping equipment to extract the internal air pressure of the carbon-fixing vacuum mixer to 0 MPa; S2: Inflate the interior of the carbon fixation vacuum mixer. When gas enters from the first manual ball valve (1) of the upper chamber and the fifth manual ball valve (10) of the lower chamber, close the second manual ball valve (7), the fourth manual ball valve (9), and the seventh manual ball valve (12); S3: Open the first manual ball valve (1) and adjust the intake pressure through the pressure reducing valve (2) and the pressure gauge (3); S4: Open the third manual ball valve (8), the fifth manual ball valve (10), and the sixth manual ball valve (11); S5: When the pipeline solenoid valve (4) receives the inflation signal, it opens for inflation, and the flow meter (5) reads the inflation flow. When the inflation flow reaches the set value, a closing signal is fed back to the pipeline solenoid valve (4), and the pipeline solenoid valve (4) is closed to stop inflation. At this time, the internal air pressure of the carbon-fixing vacuum mixer is in a positive pressure state, and the internal air pressure value of the carbon-fixing vacuum mixer is recorded at this time; S6: The gas value absorbed by the reaction can be obtained by subtracting the gas pressure value after stirring from the gas pressure value before stirring. Through reverse calculation, the gas pressure value inside the carbon fixation vacuum mixer after stirring can be calculated from the existing gas pressure value before stirring and the value absorbed by the raw materials to be stirred; S7: Control the stirring device of the carbon-fixing vacuum mixer to perform stirring. During the stirring process, gas penetrates into the raw material, so that the internal air pressure of the carbon-fixing vacuum mixer decreases. When the air pressure decreases to the calculated air pressure value, the stirring is stopped; S8: Open the pressure relief valve to relieve the pressure inside the carbon fixation vacuum mixer, complete the aeration and mixing of the raw materials, and control the discharge.

2. The method for charging a carbon fixation vacuum mixer according to claim 1, characterized in that: Two gas injection pipelines are installed on the front side wall of the carbon fixation vacuum mixer and at an upper position. A sixth manual ball valve (11) and a seventh manual ball valve (12) for manually controlling the internal switch of the gas injection pipeline are installed at the front ends of the two gas injection pipelines, respectively. The gas injection pipeline on the rear side of the seventh manual ball valve (12) is provided with a pipeline solenoid valve (4) for controlling the internal switch of the pipeline and a flow meter (5) for calculating the flow rate. A three-way pipe is provided at the front end of the sixth manual ball valve (11). A pressure gauge (3), a pressure reducing valve (2) and a first manual ball valve (1) are installed in sequence at one end of the three-way pipe extending upward. The second manual ball valve (7) is installed at the three-way pipe at the front end of the seventh manual ball valve (12). At the top end of the pipeline, a third manual ball valve (8) and a fourth manual ball valve (9) are respectively installed at the bottom end of the three-way pipeline in front of the sixth manual ball valve (11) and the seventh manual ball valve (12). The bottom ends of the third manual ball valve (8) and the fourth manual ball valve (9) are connected through a three-way combined pipeline. A fifth manual ball valve (10) is installed at the lower end of the three-way combined pipeline. A bottom meter is installed at the rear end of the fifth manual ball valve (10). The rear end of the bottom meter is connected to the bottom discharge chamber of the carbon-fixing vacuum mixer through a pipeline. A pressure sensor (6) is installed on the front side wall of the carbon-fixing vacuum mixer (1). The induction head of the pressure sensor (6) extends into the interior of the carbon-fixing vacuum mixer.

3. The method for charging a carbon fixation vacuum mixer according to claim 1, characterized in that: The top of the carbon-fixing vacuum mixer is provided with a top opening for feeding materials into the carbon-fixing vacuum mixer and a top sealing device for sealing the top opening.

4. The method for charging a carbon fixation vacuum mixer according to claim 1, characterized in that: The upper end of the first manual ball valve 1 is connected to the carbon dioxide supply pipeline, and the upper end of the second manual ball valve (7) is connected to the nitrogen supply pipeline.

5. The method for charging a carbon fixation vacuum mixer according to claim 1, characterized in that: The pressurized stirring environment in S5 is 0.3 MPa.

6. The method for charging a carbon fixation vacuum mixer according to claim 1, characterized in that: The calculation method of the gas value absorbed by the reaction in S6 is: gas filling amount*gas pressure drop value*10=reaction absorption value.

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