CN117162242A - Microwave pretreatment-carbonization maintenance integrated machine and maintenance method for cement-based material - Google Patents
Microwave pretreatment-carbonization maintenance integrated machine and maintenance method for cement-based material Download PDFInfo
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- CN117162242A CN117162242A CN202310945672.9A CN202310945672A CN117162242A CN 117162242 A CN117162242 A CN 117162242A CN 202310945672 A CN202310945672 A CN 202310945672A CN 117162242 A CN117162242 A CN 117162242A
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- 239000000463 material Substances 0.000 title claims abstract description 96
- 239000004568 cement Substances 0.000 title claims abstract description 81
- 238000012423 maintenance Methods 0.000 title claims abstract description 80
- 238000003763 carbonization Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 28
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 176
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 88
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 88
- 238000010438 heat treatment Methods 0.000 claims abstract description 59
- 230000000694 effects Effects 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 239000011229 interlayer Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 238000010000 carbonizing Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000001723 curing Methods 0.000 claims 3
- 230000003631 expected effect Effects 0.000 claims 1
- 239000013618 particulate matter Substances 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a microwave pretreatment-carbonization maintenance integrated machine and a maintenance method for cement-based materials. The integrated machine comprises a shell, a heat insulation interlayer and an inner cavity, wherein a guide rail is arranged at the bottom of the inner cavity, a microwave heating assembly and an infrared temperature thermal image collector are arranged at the top of the inner cavity, a temperature sensor, a humidity sensor and a carbon dioxide concentration sensor are arranged in the inner cavity, a bleed air fan is arranged at the bottom of the inner cavity and communicated with a bleed air pipeline, and the bleed air pipeline is connected with an air supply fan; a cooler and a dehumidifier are arranged in the air-entraining pipeline; carbon dioxide air inlet is cut into one end of the shell, the air supply fan and the heating rod are arranged on the inner side of the carbon dioxide air inlet, and the humidifier is arranged on the inner side of the heating rod. The integrated machine provided by the invention occupies a small space, the material structure is not easy to damage by microwave pretreatment, the carbonization maintenance condition can be automatically adjusted, and the carbonization maintenance effect is improved.
Description
Technical Field
The invention relates to the technical field of solid waste recycling, in particular to a microwave pretreatment-carbonization maintenance integrated machine and a maintenance method for cement-based materials.
Background
With the increasing consumption of energy, the carbon emission in China is in a rapid increasing trend, wherein the energy activity accounts for 87% of the total emission.
Therefore, the low-concentration carbon dioxide is captured and stored, and the stored carbon dioxide is carbonized and cured to be sealed in the concrete, so that the related performance of the concrete is improved.
Because carbonization curing effect is greatly affected by water content, pretreatment is generally carried out on cement-based materials before carbonization curing, so that the water content is reduced. The main pretreatment methods at present include a heat source radiation method, a hot air convection method and a heat conduction method, but the methods for reducing the water content have the following problems:
firstly, the temperature rise is slower, and the pretreatment time is too long;
secondly, the temperature difference between the inside and the outside of the cement-based material is large, and in general, the surface temperature of the material is higher than the internal temperature, so that the internal structure of the material is easily damaged;
third, the space required for pretreatment is large.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a microwave pretreatment-carbonization maintenance integrated machine and a maintenance method for cement-based materials, wherein the integrated machine combines a microwave pretreatment process and a carbonization maintenance process, occupies small space and can improve the carbonization maintenance efficiency of the cement-based materials; in the microwave pretreatment stage, the cement-based material can be heated uniformly, the temperature difference between the inside and the outside of the material is ensured to be small, the structure is not easy to damage, and the hydration of the material is accelerated and the material performance is improved under the condition of rapid temperature rise; in the carbonization maintenance stage, the carbonization maintenance condition can be automatically adjusted, and the carbonization maintenance effect is improved.
In order to achieve the above purpose, the invention provides a microwave pretreatment-carbonization maintenance integrated machine for cement-based materials, which comprises a shell positioned at the outermost layer, and is characterized in that:
the shell is in a cylinder shape which is horizontally placed, one end of the shell is closed, and the other end of the shell is provided with a closed door which can be opened and closed;
a heat insulation interlayer is arranged on the inner side of the shell;
an inner cavity for carrying out microwave pretreatment and carbonization maintenance on the cement-based material is arranged on the inner side of the heat insulation interlayer, and the inner wall of the inner cavity is composed of smooth and airtight metal;
the bottom of the inner cavity is provided with a horizontally arranged guide rail, and the guide rail is used for conveying cement-based materials into the inner cavity;
the top of the inner cavity is provided with a microwave heating assembly, and the microwave heating assembly comprises a magnetron which is arranged at the top of the inner cavity and is used for generating microwaves; the magnetrons are connected with waveguides distributed towards different directions, and each waveguide is used for transmitting microwaves generated by the magnetrons; each waveguide tube is connected with microwave antennas distributed at different positions of the inner cavity, and each microwave antenna is used for receiving microwaves transmitted by the waveguide tube and carrying out microwave heating pretreatment on the surface of the cement-based material;
the top of the inner cavity is also provided with an infrared temperature thermal image collector, and the infrared temperature thermal image collector is used for collecting the temperature of the surface of the cement-based material in real time and providing a basis for a microwave pretreatment scheme;
the inner cavity is internally provided with a temperature sensor, a humidity sensor and a carbon dioxide concentration sensor, wherein the temperature sensor is used for collecting the air temperature in the inner cavity and providing a basis for the temperature condition control in the microwave pretreatment and carbonization maintenance process; the humidity sensor is used for collecting air humidity in the inner cavity and providing basis for humidity condition control in the microwave pretreatment and carbonization maintenance process; the carbon dioxide concentration sensor is used for collecting the carbon dioxide temperature in the inner cavity and providing a basis for controlling the carbon dioxide condition in the carbonization maintenance process;
the bottom of the inner cavity is provided with a plurality of air-entraining fans which are communicated with air-entraining pipelines, the air-entraining pipelines extend from the bottom of the inner cavity to the top of the inner cavity and then extend from the top of the inner cavity to the position of an air-feeding fan at the inner side of one end of the shell, the air-entraining fans are used for introducing inner cavity air into the air-entraining pipelines, and the air-feeding fans are used for blowing the air of the air-entraining pipelines into the inner cavity so as to realize air circulation of the inner cavity; the air-entraining pipeline is respectively provided with a cooler and a dehumidifier, the cooler and the dehumidifier are respectively used for reducing the temperature and the humidity of air in the air-entraining pipeline, so as to reduce the temperature and the humidity of air in an inner cavity, and the cooler and the dehumidifier are connected with a compressor which is used for providing work support for controlling the cooler and the dehumidifier;
a carbon dioxide air inlet is cut at one end of the shell, the air supply fan is arranged at the inner side of the carbon dioxide air inlet and is used for blowing carbon dioxide gas and air-entraining pipeline air which are introduced from the outer side of the shell into the inner cavity so as to promote the circulation of the air in the inner cavity; the inside of the air supply fan is provided with a heating rod for heating the air, the inside of the heating rod is provided with a humidifier which is in the same plane with the air supply fan, and the humidifier is used for converting water in the water tank into a suspension state and increasing the air humidity of the inner cavity;
the other end of the shell is provided with an air outlet which is used for discharging the air and carbon dioxide in the inner cavity;
the integrated machine further comprises a control console, wherein the control console is connected with the sealing door and used for confirming whether the sealing door is in a closed state or not, and if the sealing door is opened, microwave heating is stopped immediately; the control console is connected with the magnetron and used for switching on and off the magnetron; the control console is connected with the microwave antenna and used for controlling the emitting direction of microwaves; the control console is connected with the infrared temperature thermal image collector and is used for receiving the surface temperature of the cement-based material collected by the infrared temperature thermal image collector; the control console is connected with the temperature sensor and is used for receiving the air temperature of the inner cavity acquired by the temperature sensor; the control console is connected with the humidity sensor and is used for receiving the air humidity of the inner cavity acquired by the humidity sensor; the control console is connected with the carbon dioxide concentration sensor and is used for receiving the carbon dioxide concentration of the inner cavity acquired by the carbon dioxide concentration sensor; the control console is connected with the air entraining fan and used for controlling the opening and closing of the air entraining fan; the control console is connected with the cooler and used for reducing the air temperature when the temperature is too high; the control console is connected with the dehumidifier and used for reducing the air humidity when the humidity is too high; the control console is connected with the carbon dioxide air inlet and used for controlling whether air is fed or not; the control console is connected with the air supply fan and is used for controlling whether the air supply fan supplies air or not; the control console is connected with the heating rod and is used for heating the air temperature when the temperature is too low; the control console is connected with the humidifier and is used for improving the air humidity when the humidity is too low; the control console is connected with the air outlet and is used for controlling whether the air outlet is out; the console is connected with the compressor and is used for controlling whether the compressor provides support for the cooler and the dehumidifier.
Further, the seam of the airtight door is subjected to microwave leakage prevention treatment; and performing microwave leakage prevention treatment on the metal joint of the inner wall of the inner cavity.
Furthermore, the guide rail and the plate bearing the cement-based material are made of one or more of heat-resistant glass, high-temperature-resistant plastic and ceramic.
Further, the carbon dioxide air inlet is provided with a filtering device for preventing large particulate matters from entering, and the air outlet is provided with a carbon dioxide concentration measuring device for monitoring the effect of carbon dioxide absorption by carbonization.
Furthermore, the inlet of the carbon dioxide air inlet is also provided with a pressure increasing valve for pressurizing, carbonizing and curing the cement-based material.
Further, the openings of the air supply fan, the air outlet and the inner cavity are all provided with a metal isolation cover capable of reflecting microwaves back, and the metal isolation cover is used for preventing the microwaves from leaking while carrying out substance exchange or data acquisition, so that the safety of equipment is protected.
Furthermore, the control console is in communication connection with the sealing door, the magnetron, the microwave antenna, the infrared temperature thermal image collector, the temperature sensor, the humidity sensor, the carbon dioxide concentration sensor, the air entraining fan, the cooler, the dehumidifier, the carbon dioxide air inlet, the air supplying fan, the heating rod, the humidifier, the air outlet and the compressor.
The invention also designs a microwave pretreatment-carbonization maintenance method of the cement-based material, which is suitable for the microwave pretreatment-carbonization maintenance integrated machine of the cement-based material, and is characterized by comprising the following steps:
s1) conveying the stacked cement-based materials to the central position of an inner cavity through a guide rail, and fixing;
s2) closing the sealing door and confirming that the integrated machine is in a normal running state;
s3) starting a microwave heating assembly to heat the cement-based material to a specified temperature;
s4) the control console monitors the surface temperature of the cement-based material in real time through the infrared temperature thermal image collector, adjusts the direction of the microwave antenna when the temperature distribution is uneven, thereby keeping the surface overall temperature of the cement-based material consistent, pausing microwave heating when the surface overall temperature of the cement-based material reaches a specified temperature, and restarting when the temperature is reduced to a lowest threshold value;
s5) stopping heating by the microwave heating assembly after the microwave heating reaches the set time, ending the microwave pretreatment stage and entering the carbonization maintenance stage;
s6) during carbonization maintenance, the control console monitors the state of the inner cavity through a temperature sensor, a humidity sensor and a carbon dioxide concentration sensor, and when the air temperature is too high, the air entraining fan, the air supplying fan, the cooler and the compressor are started to reduce the air temperature to a specified temperature; when the air temperature is too low, starting the air entraining fan, the air supplying fan and the heating rod, and increasing the air temperature to the specified temperature; when the air humidity is too high, starting a bleed air fan, an air supply fan, a dehumidifier and a compressor, and reducing the air humidity to the specified humidity; when the air humidity is too high, starting the air entraining fan, the air supplying fan and the humidifier, and improving the air humidity to the specified humidity; when the concentration of the carbon dioxide is too low, a carbon dioxide air inlet is opened, an air outlet is closed, and the concentration of the carbon dioxide is increased to a specified concentration; when the concentration of the carbon dioxide is too high, closing the carbon dioxide air inlet, opening the air outlet, and reducing the designated concentration of the carbon dioxide; thereby maintaining the lumen temperature, humidity and carbon dioxide concentration at specified values;
s7) stopping the operation of the integrated machine after the carbonization maintenance time reaches the set time, and ending carbonization maintenance;
s8) opening the sealing door, conveying the cement-based material out of the inner cavity through the guide rail, and completing microwave pretreatment and carbonization maintenance.
Further, in S5), during the microwave pretreatment, the console measures the air temperature through the temperature sensor, and when the air temperature is lower than the designated temperature, the bleed air fan, the air supply fan and the heating rod are started, so that the temperature rising speed is increased, the temperature stability is maintained, and the microwave component loss is reduced.
Still further, in S5), during the microwave pretreatment, the console measures the air humidity through the humidity sensor, and when the air humidity is higher than the designated humidity, the bleed fan, the air supply fan, the dehumidifier, and the compressor are turned on to help maintain the humidity stable, and assist the microwave pretreatment to achieve the desired effect.
The invention has the advantages that:
1. the integrated machine combines the microwave pretreatment process and the carbonization maintenance process, occupies small space, and can improve the carbonization maintenance efficiency of the cement-based material;
2. in the microwave pretreatment stage, the cement-based material can be heated uniformly, so that the difference between the internal temperature and the external temperature of the material is ensured to be small, the structure is not easy to damage, the hydration of the material is accelerated, and the material performance is improved under the condition that the temperature is increased quickly; meanwhile, the environmental conditions of microwave pretreatment can be automatically adjusted, and the microwave pretreatment effect is improved;
3. the invention can automatically adjust the air temperature, humidity and carbon dioxide concentration of carbonization maintenance in the carbonization maintenance stage, and improve the carbonization maintenance effect.
The microwave pretreatment-carbonization maintenance integrated machine and the maintenance method for the cement-based material have the advantages that the integrated machine occupies small space, and the carbonization maintenance efficiency of the cement-based material can be improved; not only ensures that the material structure is not easily damaged by microwave pretreatment, but also can automatically adjust the carbonization maintenance condition and improve the carbonization maintenance effect.
Drawings
FIG. 1 is a schematic diagram of an integrated machine according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
in the figure: the device comprises a shell 1, a heat insulation interlayer 2, an inner cavity 3, a closed door 4, a guide rail 5, a metal isolation cover 6, a humidifier 7, a carbon dioxide air inlet 8, an air supply fan 9, a heating rod 10, an infrared temperature thermal image collector 11, a temperature sensor 12, a humidity sensor 13, a carbon dioxide concentration sensor 14, a magnetron 15, a waveguide 16, a microwave antenna 17, an air outlet 18, an air entraining fan 19, an air entraining pipeline 20, a cooler 21, a dehumidifier 22, a compressor 23 and a control console 24.
Detailed Description
The invention is described in further detail below with reference to the drawings and specific examples.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.
As shown in fig. 1-2, the microwave pretreatment-carbonization maintenance integrated machine for cement-based materials comprises a shell 1 positioned on the outermost layer, wherein the shell 1 is in a cylinder shape which is horizontally placed, one end of the shell 1 is closed, and the other end of the shell is provided with a closed door 4 which can be opened and closed. The shell 1 is arranged on the outermost layer of the equipment and provides protection and support for the integrated machine. The airtight door 4 can be opened and closed to serve as a passage for cement-based material to enter and exit.
Preferably, the seam of the airtight door 4 is subjected to microwave leakage prevention treatment.
The inner side of the shell 1 is provided with a heat insulation interlayer 2. The heat insulation interlayer 2 is used for providing heat insulation, and connecting lines and various instruments and equipment are buried in the heat insulation interlayer.
An inner cavity 3 for carrying out microwave pretreatment and carbonization maintenance on the cement-based material is arranged on the inner side of the heat insulation interlayer 2, and the inner wall of the inner cavity 3 is composed of smooth and airtight metal.
Preferably, the metal joint of the inner wall of the inner cavity 3 is subjected to microwave leakage prevention treatment.
The bottom of the inner cavity 3 is provided with a horizontally arranged guide rail 5, and the guide rail 5 is used for conveying cement-based materials into the inner cavity 3.
Preferably, the guide rail 5 and the plate material carrying the cement-based material are made of one or more of heat-resistant glass, high-temperature-resistant plastic and ceramic.
Specifically, the stacked cement-based materials are conveyed into the equipment, and the materials of the guide rail 5 and the plate carrying the cement-based materials can be selected from materials such as heat-resistant glass, high-temperature-resistant plastic, ceramic and the like which cannot influence the microwave heating effect, and specially designed metal products which cannot damage the equipment can also be used.
The top of the inner cavity 3 is provided with a microwave heating assembly which comprises a magnetron 15 arranged at the top of the inner cavity 3 and used for generating microwaves; the magnetrons 15 are connected with waveguides 16 distributed towards different directions, and each waveguide 16 is used for transmitting microwaves generated by the magnetrons 15; each waveguide 16 is connected with microwave antennas 17 distributed at different positions of the inner cavity 3, and each microwave antenna 17 is used for receiving microwaves transmitted by the waveguide 16 and carrying out microwave heating pretreatment on the surface of the cement-based material.
The top of the inner cavity 3 is also provided with an infrared temperature thermal image collector 11, and the infrared temperature thermal image collector 11 is used for collecting the temperature of the surface of the cement-based material in real time and providing a basis for a microwave pretreatment scheme.
A temperature sensor 12, a humidity sensor 13 and a carbon dioxide concentration sensor 14 are arranged in the inner cavity 3, and the temperature sensor 12 is used for collecting the air temperature in the inner cavity 3 and providing a basis for the temperature condition control in the microwave pretreatment and carbonization maintenance process; the humidity sensor 13 is used for collecting air humidity in the inner cavity 3 and providing basis for humidity condition control in the microwave pretreatment and carbonization maintenance process; the carbon dioxide concentration sensor 14 is used for collecting the carbon dioxide temperature in the inner cavity 3 and providing a basis for controlling the carbon dioxide condition in the carbonization maintenance process.
The bottom of the inner cavity 3 is provided with a plurality of air-entraining fans 19, the air-entraining fans 19 are communicated with an air-entraining pipeline 20, the air-entraining pipeline 20 extends from the bottom of the inner cavity 3 to the top of the inner cavity 3 and then extends from the top of the inner cavity 3 to the position of an air-supplying fan 9 inside one end of the shell 1, the air-entraining fans 19 are used for introducing air of the inner cavity 3 into the air-entraining pipeline 20, and the air-supplying fan 9 is used for blowing air of the air-entraining pipeline 20 into the inner cavity 3, so that air circulation of the inner cavity 3 is realized; the temperature reducer 21 and the dehumidifier 22 are respectively arranged in the air-entraining pipeline 20, the temperature reducer 21 and the dehumidifier 22 are respectively used for reducing the temperature and the humidity of the air in the air-entraining pipeline 20, so as to reduce the temperature and the humidity of the air in the inner cavity 3, the temperature reducer 21 and the dehumidifier 22 are connected with a compressor 23, and the compressor 23 is used for providing work support for controlling the temperature reducer 21 and the dehumidifier 22.
A carbon dioxide air inlet 8 is cut at one end of the shell 1, the air supply fan 9 is arranged at the inner side of the carbon dioxide air inlet 8, and the air supply fan 9 is used for blowing carbon dioxide air and air-entraining pipeline 20 which are introduced from the outer side of the shell 1 into the inner cavity 3 to promote the circulation of air in the inner cavity 3; the inside of the air supply fan 9 is provided with a heating rod 10 for heating the air temperature, the inside of the heating rod 10 is provided with a humidifier 7 which is positioned on the same plane with the air supply fan 9, and the humidifier 7 is used for converting water in a water tank into a suspension state and increasing the air humidity of the inner cavity 3.
Preferably, a filtering device for preventing large particulate matters from entering is arranged at the inlet of the carbon dioxide air inlet 8, and a carbon dioxide concentration measuring device is arranged at the outlet of the air outlet 18 so as to monitor the effect of carbon dioxide absorption by carbonization.
Preferably, a pressurizing valve is further arranged at the inlet of the carbon dioxide air inlet 8 and is used for pressurizing, carbonizing and curing the cement-based material.
The other end of the shell 1 is provided with an air outlet 18, and the air outlet 18 is used for discharging air and carbon dioxide in the inner cavity 3.
Preferably, openings of the air supply fan 9 and the air outlet 18, which are connected with the inner cavity 3, are provided with a metal isolation cover 6 capable of reflecting microwaves back, and the metal isolation cover 6 is used for preventing the microwaves from leaking while carrying out substance exchange or data acquisition, so that the safety of equipment is protected.
The integrated machine also comprises a console 24, wherein a microcomputer is arranged in the console 24 and is connected with other parts, so that the state of the equipment can be set, monitored and adjusted in real time.
The console 24 is connected with the sealing door 4 and is used for confirming whether the sealing door 4 is in a closed state or not, and if the sealing door is opened, microwave heating is stopped immediately; the console 24 is connected with the magnetron 15 and is used for switching on and off the magnetron 15; the console 24 is connected with the microwave antenna 17 and is used for controlling the emitting direction of microwaves; the console 24 is connected with the infrared temperature thermal image collector 11 and is used for receiving the surface temperature of the cement-based material collected by the infrared temperature thermal image collector 11; the console 24 is connected with the temperature sensor 12 and is used for receiving the air temperature of the inner cavity acquired by the temperature sensor 12; the console 24 is connected with the humidity sensor 13 and is used for receiving the air humidity of the inner cavity acquired by the humidity sensor 13; the console 24 is connected with the carbon dioxide concentration sensor 14 and is used for receiving the carbon dioxide concentration of the inner cavity acquired by the carbon dioxide concentration sensor 14; the console 24 is connected with the air entraining fan 19 and is used for controlling the opening and closing of the air entraining fan 19; the console 24 is connected with the cooler 21 and is used for reducing the air temperature when the temperature is too high; the console 24 is connected with the dehumidifier 22 for reducing the air humidity when the humidity is too high; the control console 24 is connected with the carbon dioxide air inlet 8 and is used for controlling whether air is admitted or not; the console 24 is connected with the air supply fan 9 and is used for controlling whether the air supply fan 9 supplies air or not; the control console 24 is connected with the heating rod 10 and is used for heating the air temperature when the temperature is too low; the control console 24 is connected with the humidifier 7 and is used for improving the air humidity when the humidity is too low; the console 24 is connected with the air outlet 18 and is used for controlling whether the air outlet 18 is out; the console 24 is connected to the compressor 23 for controlling whether the compressor 23 provides support for the desuperheater 21 and the dehumidifier 22.
Preferably, the console 24 is in communication connection with the sealing door 4, the magnetron 15, the microwave antenna 17, the infrared temperature thermal image collector 11, the temperature sensor 12, the humidity sensor 13, the carbon dioxide concentration sensor 14, the air entraining fan 19, the cooler 21, the dehumidifier 22, the carbon dioxide air inlet 8, the air supplying fan 9, the heating rod 10, the humidifier 7, the air outlet 18 and the compressor 23.
The invention also designs a microwave pretreatment-carbonization maintenance method of the cement-based material, which is suitable for the microwave pretreatment-carbonization maintenance integrated machine of the cement-based material, and comprises the following steps:
s1) conveying the stacked cement-based materials to the central position of the inner cavity 3 through a guide rail 5, and fixing;
s2) closing the sealing door 4 and confirming that the integrated machine is in a normal running state;
s3) starting a microwave heating assembly to heat the cement-based material to a specified temperature;
s4) the control console 24 monitors the surface temperature of the cement-based material in real time through the infrared temperature thermal image collector 11, adjusts the direction of the microwave antenna 17 when the temperature distribution is uneven, thereby keeping the surface overall temperature of the cement-based material consistent, pauses microwave heating when the surface overall temperature of the cement-based material reaches a specified temperature, and restarts when the temperature is reduced to a lowest threshold value;
s5) stopping heating by the microwave heating assembly after the microwave heating reaches the set time, ending the microwave pretreatment stage and entering the carbonization maintenance stage;
preferably, during the microwave pretreatment, the control console 24 measures the air temperature through the temperature sensor 12, and when the air temperature is lower than the designated temperature, the air entraining fan 19, the air supply fan 9 and the heating rod 10 are started, so that the temperature rising speed is increased, the temperature stability is maintained, and the microwave assembly loss is reduced.
Preferably, during the microwave pretreatment, the console 24 measures the air humidity by means of the humidity sensor 13, and when the air humidity is higher than a specified humidity, the bleed air fan 19, the air feed fan 9, the dehumidifier 22 and the compressor 23 are turned on, helping to maintain the humidity stable, assisting the microwave pretreatment to the desired effect.
S6) during carbonization maintenance, the control console 24 monitors the state of the inner cavity 3 through the temperature sensor 12, the humidity sensor 13 and the carbon dioxide concentration sensor 14, and when the air temperature is too high, the air entraining fan 19, the air supply fan 9, the cooler 21 and the compressor 23 are started to reduce the air temperature to a specified temperature; when the air temperature is too low, the air entraining fan 19, the air supplying fan 9 and the heating rod 10 are started, and the air temperature is increased to the specified temperature; when the air humidity is too high, the bleed air fan 19, the air supply fan 9, the dehumidifier 22 and the compressor 23 are started, and the air humidity is reduced to the specified humidity; when the air humidity is too high, the air entraining fan 19, the air supply fan 9 and the humidifier 7 are started, and the air humidity is increased to the specified humidity; when the concentration of the carbon dioxide is too low, the carbon dioxide air inlet 8 is opened, the air outlet 18 is closed, and the concentration of the carbon dioxide is increased to the specified concentration; when the concentration of the carbon dioxide is too high, the carbon dioxide air inlet 8 is closed, the air outlet 18 is opened, and the designated concentration of the carbon dioxide is reduced; thereby maintaining the temperature, humidity and carbon dioxide concentration of the inner chamber 3 at specified values;
s7) stopping the operation of the integrated machine after the carbonization maintenance time reaches the set time, and ending carbonization maintenance;
s8) opening the sealing door 4, conveying the cement-based material out of the inner cavity 3 through the guide rail 5, and completing microwave pretreatment and carbonization maintenance.
The microwave pretreatment-carbonization maintenance method of the cement-based material in the embodiment comprises the following specific steps:
s1) conveying the common silicon cement-based materials with 6 layers stacked in a cross manner to the central position of the inner cavity 3 through a guide rail 5, and fixing;
s2) closing the sealing door 4 and confirming that the integrated machine is in a normal running state;
s3) starting a microwave heating assembly to heat the cement-based material to 70 ℃;
s4) the control console 24 monitors the surface temperature of the cement-based material in real time through the infrared temperature thermal image collector 11, adjusts the direction of the microwave antenna 17 when the temperature distribution is uneven, thereby keeping the surface overall temperature of the cement-based material consistent, pauses microwave heating when the surface overall temperature of the cement-based material reaches 70 ℃, and restarts when the temperature is reduced to the lowest threshold value of 65 ℃;
s5) stopping heating by the microwave heating assembly after the microwave heating reaches 2 hours, ending the microwave pretreatment stage and entering the carbonization maintenance stage;
s6) during carbonization maintenance, the control console 24 monitors the state of the inner cavity 3 through the temperature sensor 12, the humidity sensor 13 and the carbon dioxide concentration sensor 14, and adjusts corresponding equipment according to the data so as to maintain the temperature, the humidity and the carbon dioxide concentration of the inner cavity 3 at 30 ℃, 70% and 12%;
s7) stopping the operation of the integrated machine after the carbonization maintenance time reaches 3 hours, and ending carbonization maintenance;
s8) opening the sealing door 4, conveying the cement-based material out of the inner cavity 3 through the guide rail 5, and completing microwave pretreatment and carbonization maintenance.
The microwave pretreatment-carbonization maintenance integrated machine and the maintenance method for the cement-based material have the advantages that the integrated machine occupies small space, and the carbonization maintenance efficiency of the cement-based material can be improved; not only ensures that the material structure is not easily damaged by microwave pretreatment, but also can automatically adjust the carbonization maintenance condition and improve the carbonization maintenance effect.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a cement base material's microwave pretreatment-carbonization maintenance all-in-one, includes shell (1) that is located outermost, its characterized in that:
the shell (1) is in a cylinder shape which is horizontally placed, one end of the shell (1) is closed, and the other end of the shell is provided with a closed door (4) which can be opened and closed;
the inner side of the shell (1) is provided with a heat insulation interlayer (2);
an inner cavity (3) for carrying out microwave pretreatment and carbonization maintenance on the cement-based material is arranged on the inner side of the heat insulation interlayer (2), and the inner wall of the inner cavity (3) is composed of smooth and airtight metal;
the bottom of the inner cavity (3) is provided with a horizontally arranged guide rail (5), and the guide rail (5) is used for conveying cement-based materials into the inner cavity (3);
the top of the inner cavity (3) is provided with a microwave heating assembly which comprises a magnetron (15) arranged at the top of the inner cavity (3) and used for generating microwaves; the magnetrons (15) are connected with waveguides (16) distributed towards different directions, and each waveguide (16) is used for transmitting microwaves generated by the magnetrons (15); each waveguide tube (16) is connected with microwave antennas (17) distributed at different positions of the inner cavity (3), and each microwave antenna (17) is used for receiving microwaves transmitted by the waveguide tube (16) and carrying out microwave heating pretreatment on the surface of the cement-based material;
the top of the inner cavity (3) is also provided with an infrared temperature thermal image collector (11), and the infrared temperature thermal image collector (11) is used for collecting the temperature of the surface of the cement-based material in real time and providing a basis for a microwave pretreatment scheme;
a temperature sensor (12), a humidity sensor (13) and a carbon dioxide concentration sensor (14) are arranged in the inner cavity (3), and the temperature sensor (12) is used for collecting the air temperature in the inner cavity (3) and providing a basis for the control of temperature conditions in the microwave pretreatment and carbonization maintenance process; the humidity sensor (13) is used for collecting air humidity in the inner cavity (3) and providing basis for humidity condition control in the microwave pretreatment and carbonization maintenance process; the carbon dioxide concentration sensor (14) is used for collecting the carbon dioxide temperature in the inner cavity (3) and providing a basis for controlling the carbon dioxide condition in the carbonization maintenance process;
the bottom of the inner cavity (3) is provided with a plurality of air-entraining fans (19), the air-entraining fans (19) are communicated with an air-entraining pipeline (20), the air-entraining pipeline (20) extends from the bottom of the inner cavity (3) to the top of the inner cavity (3) and then extends from the top of the inner cavity (3) to the position of an air-feeding fan (9) at the inner side of one end of the shell (1), the air-entraining fans (19) are used for introducing air of the inner cavity (3) into the air-entraining pipeline (20), and the air-feeding fan (9) is used for blowing the air of the air-entraining pipeline (20) into the inner cavity (3), so that air circulation of the inner cavity (3) is realized; a cooler (21) and a dehumidifier (22) are respectively arranged in the air-entraining pipeline (20), the cooler (21) and the dehumidifier (22) are respectively used for reducing the temperature and the humidity of the air in the air-entraining pipeline (20), so as to reduce the temperature and the humidity of the air in the inner cavity (3), the cooler (21) and the dehumidifier (22) are connected with a compressor (23), and the compressor (23) is used for providing work support for controlling the cooler (21) and the dehumidifier (22);
a carbon dioxide air inlet (8) is cut at one end of the shell (1), the air supply fan (9) is arranged at the inner side of the carbon dioxide air inlet (8), and the air supply fan (9) is used for blowing carbon dioxide gas and air in an air-entraining pipeline (20) which are introduced from the outer side of the shell (1) into the inner cavity (3) so as to promote the circulation of the air in the inner cavity (3); a heating rod (10) for heating the air temperature is arranged at the inner side of the air supply fan (9), a humidifier (7) which is positioned on the same plane as the air supply fan (9) is arranged at the inner side of the heating rod (10), and the humidifier (7) is used for converting water in a water tank into a suspension state and increasing the air humidity of the inner cavity (3);
the other end of the shell (1) is provided with an air outlet (18), and the air outlet (18) is used for discharging air and carbon dioxide in the inner cavity (3);
the integrated machine further comprises a control console (24), wherein the control console (24) is connected with the sealing door (4) and is used for confirming whether the sealing door (4) is in a closed state or not, and if the sealing door is opened, microwave heating is stopped immediately; the control console (24) is connected with the magnetron (15) and is used for switching on and off the magnetron (15); the control console (24) is connected with the microwave antenna (17) and is used for controlling the emitting direction of microwaves; the control console (24) is connected with the infrared temperature thermal image collector (11) and is used for receiving the surface temperature of the cement-based material collected by the infrared temperature thermal image collector (11); the control console (24) is connected with the temperature sensor (12) and is used for receiving the air temperature of the inner cavity acquired by the temperature sensor (12); the control console (24) is connected with the humidity sensor (13) and is used for receiving the air humidity of the inner cavity acquired by the humidity sensor (13); the control console (24) is connected with the carbon dioxide concentration sensor (14) and is used for receiving the carbon dioxide concentration of the inner cavity acquired by the carbon dioxide concentration sensor (14); the control console (24) is connected with the air entraining fan (19) and is used for controlling the opening and closing of the air entraining fan (19); the control console (24) is connected with the cooler (21) and is used for reducing the air temperature when the temperature is too high; the control console (24) is connected with the dehumidifier (22) and is used for reducing the air humidity when the humidity is too high; the control console (24) is connected with the carbon dioxide air inlet (8) and is used for controlling whether air is fed or not; the control console (24) is connected with the air supply fan (9) and is used for controlling whether the air supply fan (9) supplies air or not; the control console (24) is connected with the heating rod (10) and is used for heating the air temperature when the temperature is too low; the control console (24) is connected with the humidifier (7) and is used for improving the air humidity when the humidity is too low; the control console (24) is connected with the air outlet (18) and is used for controlling whether the air outlet (18) is out of air or not; the console (24) is connected with the compressor (23) and is used for controlling whether the compressor (23) provides support for the cooler (21) and the dehumidifier (22).
2. The cement-based material microwave pretreatment-carbonization-maintenance integrated machine according to claim 1, wherein: the joint of the airtight door (4) is subjected to microwave leakage prevention treatment; and the metal joint of the inner wall of the inner cavity (3) is subjected to microwave leakage prevention treatment.
3. The cement-based material microwave pretreatment-carbonization-maintenance integrated machine according to claim 2, wherein: the guide rail (5) and the plate bearing the cement-based material are made of one or more of heat-resistant glass, high-temperature-resistant plastic and ceramic.
4. The cement-based material microwave pretreatment-carbonization-maintenance integrated machine according to claim 1, wherein: the carbon dioxide gas inlet (8) entrance is provided with the filter equipment who avoids big particulate matter to get into, gas outlet (18) exit is provided with carbon dioxide concentration measuring device to the carbonization absorbs carbon dioxide effect.
5. The integrated microwave pretreatment-carbonization and maintenance machine for cement-based materials according to claim 4, wherein: the inlet of the carbon dioxide air inlet (8) is also provided with a pressure increasing valve for pressurizing, carbonizing and curing the cement-based material.
6. The cement-based material microwave pretreatment-carbonization-maintenance integrated machine according to claim 1, wherein: the opening parts of the air supply fan (9), the air outlet (18) and the inner cavity (3) are respectively provided with a metal isolation cover (6) capable of reflecting microwaves back, and the metal isolation covers (6) are used for preventing the microwaves from leaking when carrying out substance exchange or data acquisition and protecting equipment safety.
7. The integrated microwave pretreatment-carbonization and maintenance machine for cement-based materials according to claim 6, wherein: the control console (24) is in communication connection with the sealing door (4), the magnetron (15), the microwave antenna (17), the infrared temperature thermal image collector (11), the temperature sensor (12), the humidity sensor (13), the carbon dioxide concentration sensor (14), the air entraining fan (19), the cooler (21), the dehumidifier (22), the carbon dioxide air inlet (8), the air supplying fan (9), the heating rod (10), the humidifier (7), the air outlet (18) and the compressor (23).
8. A microwave pretreatment-carbonization maintenance method for cement-based materials, which is applicable to the microwave pretreatment-carbonization maintenance integrated machine for cement-based materials according to any one of claims 1 to 7, and is characterized by comprising the following steps:
s1) conveying the stacked cement-based materials to the central position of the inner cavity (3) through a guide rail (5) and fixing the materials;
s2) closing the sealing door (4) and confirming that the integrated machine is in a normal running state;
s3) starting a microwave heating assembly to heat the cement-based material to a specified temperature;
s4) the control console (24) monitors the surface temperature of the cement-based material in real time through the infrared temperature thermal image collector (11), adjusts the direction of the microwave antenna (17) when the temperature distribution is uneven, so as to keep the surface integral temperature of the cement-based material consistent, pauses microwave heating when the surface integral temperature of the cement-based material reaches a specified temperature, and restarts when the temperature is reduced to a minimum threshold value;
s5) stopping heating by the microwave heating assembly after the microwave heating reaches the set time, ending the microwave pretreatment stage and entering the carbonization maintenance stage;
s6) during carbonization maintenance, a control console (24) monitors the state of an inner cavity (3) through a temperature sensor (12), a humidity sensor (13) and a carbon dioxide concentration sensor (14), and when the air temperature is too high, a bleed air fan (19), an air supply fan (9), a cooler (21) and a compressor (23) are started to reduce the air temperature to a specified temperature; when the air temperature is too low, starting the air entraining fan (19), the air supplying fan (9) and the heating rod (10), and increasing the air temperature to a specified temperature; when the air humidity is too high, starting a bleed air fan (19), an air supply fan (9), a dehumidifier (22) and a compressor (23), and reducing the air humidity to the specified humidity; when the air humidity is too high, starting a bleed air fan (19), an air supply fan (9) and a humidifier (7), and improving the air humidity to the specified humidity; when the concentration of the carbon dioxide is too low, a carbon dioxide air inlet (8) is opened, an air outlet (18) is closed, and the concentration of the carbon dioxide is increased to a specified concentration; when the concentration of the carbon dioxide is too high, closing the carbon dioxide air inlet (8), opening the air outlet (18), and reducing the designated concentration of the carbon dioxide; thereby maintaining the temperature, humidity and carbon dioxide concentration of the inner cavity (3) at specified values;
s7) stopping the operation of the integrated machine after the carbonization maintenance time reaches the set time, and ending carbonization maintenance;
s8) opening the sealing door (4), conveying the cement-based material out of the inner cavity (3) through the guide rail (5), and completing microwave pretreatment and carbonization maintenance.
9. The microwave pretreatment-carbonization curing method of a cement-based material according to claim 8, wherein: s5), during the microwave pretreatment, the control console (24) measures the air temperature through the temperature sensor (12), and when the air temperature is lower than the designated temperature, the air entraining fan (19), the air supplying fan (9) and the heating rod (10) are started, so that the temperature rising speed is accelerated, the temperature stability is maintained, and the loss of microwave components is reduced.
10. The microwave pretreatment-carbonization curing method of a cement-based material according to claim 8, wherein: s5), during the microwave pretreatment, the control console (24) measures the air humidity through the humidity sensor (13), and when the air humidity is higher than the designated humidity, the air entraining fan (19), the air supply fan (9), the dehumidifier (22) and the compressor (23) are started to help maintain the humidity stable and assist the microwave pretreatment to achieve the expected effect.
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