CN110681375A - Activated carbon heating reactor and method for regenerating activated carbon - Google Patents
Activated carbon heating reactor and method for regenerating activated carbon Download PDFInfo
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- CN110681375A CN110681375A CN201911081932.2A CN201911081932A CN110681375A CN 110681375 A CN110681375 A CN 110681375A CN 201911081932 A CN201911081932 A CN 201911081932A CN 110681375 A CN110681375 A CN 110681375A
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
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- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
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Abstract
The invention discloses an activated carbon heating reactor and a method for regenerating activated carbon, belonging to the technical field of microwave application and comprising at least one reaction unit; the reaction unit comprises an air inlet, an air outlet, a shielding shell, a cut-off waveguide, a material pipe and at least one microwave source; a microwave-permeable material pipe with two ends extending to the top surface and the bottom surface of the shielding shell is arranged in the shielding shell and used for containing active carbon; the gas inlet inputs specific gas, and the gas outlet outputs gas discharged from the other end of the material pipe; the specific gas passes through a cut-off waveguide respectively before being input into the gas inlet and after being output from the gas outlet; the cut-off waveguide is used for reducing the escape of microwaves from the gas inlet and the gas outlet; the side surface of the shielding shell is provided with feed ports which are in one-to-one correspondence with the microwave sources; the microwave source is used for inputting microwave to the feed port directly or through a waveguide or through a slot antenna to regenerate the activated carbon. The activated carbon heating reactor and the method for regenerating the activated carbon quickly regenerate the activated carbon by using microwaves, and have the advantages of simple working procedure and good regeneration effect.
Description
Technical Field
The invention belongs to the technical field of microwave application, and particularly relates to an activated carbon heating reactor and a method for regenerating activated carbon.
Background
The existing activated carbon regeneration method generally adopts a high-temperature regeneration method, changes the adsorption balance and achieves the purposes of desorption and decomposition. Firstly, dehydrating and drying, namely separating the active carbon from a conveyed liquid phase, then heating the active carbon to 100-150 ℃, evaporating moisture with the moisture content of nearly 40-50% in pores of the active carbon, volatilizing part of organic matters with low boiling points, and carbonizing the other part of organic matters and leaving the part of organic matters in the pores of the active carbon. The heat required for drying is about 50% of the total regeneration energy consumption, and the volume of the heat used accounts for 30% -40% of the total regeneration device. And secondly, carbonizing and heating to 300-700 ℃ to volatilize all organic matters with low boiling points. The organic matter with high boiling point is decomposed thermally, one part becomes organic matter with low boiling point to be volatilized and desorbed, and the other part is carbonized and left in the pores of the active carbon. The rate of temperature rise and the carbonization temperature depend on the type of the adsorbent. And thirdly, continuously heating to 700-1000 ℃, introducing activated gas such as water vapor, carbon dioxide, oxygen and the like into the pores of the activated carbon, decomposing carbon and compounds remained in the pores into activated gas such as carbon monoxide, carbon dioxide, hydrogen and the like, and escaping, thereby achieving the purpose of re-pore forming. Fourthly, cooling, namely cooling the activated carbon rapidly by using water to prevent oxidation.
The steps for regenerating the activated carbon are complex, the process is complicated, the adsorption capacity of the obtained regenerated activated carbon is rapidly weakened along with the increase of times, and improvement is urgently needed.
Disclosure of Invention
The invention aims to provide an activated carbon heating reactor and a method for regenerating activated carbon aiming at the defects, and solves the problems that the existing activated carbon regeneration equipment and method are complex in steps, complex in working procedures, poor in effect of the obtained regenerated activated carbon and the like. In order to achieve the purpose, the invention provides the following technical scheme:
an activated carbon heated reactor comprising at least one reaction unit 1; the reaction unit 1 comprises an air inlet 2, an air outlet 3, a shielding shell 4, a cut-off waveguide 5, a material pipe 6 and at least one microwave source 7; a material pipe 6 with two ends extending to the top surface and the bottom surface of the shielding shell 4 is arranged in the shielding shell 4; the material pipe 6 is used for containing activated carbon, and the material pipe 6 can penetrate microwaves; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas passes through a cut-off waveguide 5 before being input into the gas inlet 2 and after being output from the gas outlet 3; the cut-off waveguide 5 is used for reducing the escape of microwaves from the gas inlet 2 and the gas outlet 3; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. According to the structure, the activated carbon heating reactor comprises at least one reaction unit 1, and when the quantity of the simultaneously regenerated activated carbon needs to be increased, a plurality of reaction units 1 can be arranged in parallel; the material pipe 6 is arranged in the shielding shell 4, two ends of the material pipe 6 extend towards the top surface and the bottom surface of the shielding shell 4, the material pipe 6 can be a pipe extending in the straight direction or a pipe extending in a spiral manner or a pipe with other structures, and the material pipe 6 is used for containing active carbon, so that the active carbon at each section of the material pipe 6 can fully absorb microwaves and fully heat the active carbon in the whole material pipe 6; the diameter of the material pipe 6 cannot be too large, the diameter is generally 120mm, the length is 1000mm, and the active carbon positioned in the middle of the material pipe 6 cannot absorb microwaves if the diameter is too large; the material pipe 6 can be permeable to microwaves, and the material of the material pipe 6 is usually quartz, ceramic and other substances permeable to microwaves; the material of the inner wall of the shielding shell 4 is usually metal, which can reflect the microwave, reduce the escape of the microwave after the microwave enters the shielding shell 4 from the feed port, and ensure that the microwave is fully absorbed by the active carbon; the number of the microwave sources 7 is at least one, and the smaller the power of the microwave sources 7, the more the number of the needed microwave sources 7 is; the invention adopts a three-phase five-wire system with microwave frequency of 2450MHz +/-50 MHz and voltage of 380V; when two reaction units 1 are arranged in parallel, 10 microwave sources with the power of 1kW can be arranged, and the performance-to-cost ratio is high; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas is generally stable gas, and nitrogen is adopted as the specific gas; after the activated carbon to be regenerated is filled into the material pipe 6, nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3, so that the activated carbon to be regenerated is in an oxygen-insulated environment; the microwave source 7 starts to work, microwaves are input into the shielding shell 4 from the feed port, the microwaves penetrate through the material pipe 6 and then are absorbed by the activated carbon, the activated carbon is heated, impurities are discharged from the air outlet 3 along with nitrogen, and the activated carbon is regenerated; the microwave source 7 stops working, the air inlet 2 continues to input nitrogen into the material pipe 6, the high-temperature active carbon is rapidly cooled, and the active carbon is discharged. When the microwave source 7 works, the temperature is raised to about 400 ℃ when normal-temperature nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3. The microwave can not only heat the active carbon quickly, but also avoid the complicated procedures of introducing water vapor and the like, and the discharge caused by the microwave can increase new pores in the active carbon, thereby being beneficial to improving the adsorption capacity of the active carbon and having better regeneration effect. Due to the existence of the air inlet 2 and the air outlet 3, openings are necessarily required to be arranged on the shielding shell 4, which causes that microwaves can escape from the air inlet 2 and the air outlet 3, and the arrangement of the cut-off waveguide 5 reduces the escape of the microwaves; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. Some microwave sources 7 are provided with waveguides, so that microwaves can be directly input from a feed port, the microwave sources 7 can also input the microwaves to the feed port through the waveguides 81 or through the slot antennas 82, when the waveguide 81 is directly connected with the structure, one side surface of the shielding shell 4 can be provided with a plurality of feed ports to fully cover the material pipe 6, when the slot antennas 82 are adopted, the slot antennas 82 also extend along the top surface and the bottom surface of the shielding shell 4, the slot antennas 82 have various structures, the simplest structure is that, for example, a rectangular waveguide wide edge is provided with a plurality of slots, and the microwaves enter the feed port from the slots; the slot antenna 82 structure employed in fig. 7 and 8; the size of the air inlet 2 and the size of the air outlet 3 are limited by the cut-off waveguide 5, the cut-off waveguide 5 in the figure 1 is fixed on the shielding shell 4, the air outlet 3 is communicated with the outside through an air outlet pipe, and the air outlet pipe penetrates through the corresponding cut-off waveguide 5; the air inlet 2 is used for air inlet through an air inlet pipe, and the air inlet pipe penetrates through the corresponding cut-off waveguide 5; the material pipe 6 adopted in fig. 1 is a straight pipe and adopts a waveguide 81 direct connection structure; the diameter of the material pipe 6 in fig. 1 is equivalent to the size of the air inlet 2 and the air outlet 3, but the contained amount of the activated carbon is small; in fig. 2, the diameter of the material pipe 6 is larger than that of the air inlet 2 and the air outlet 3, so that more activated carbon can be accommodated.
Further, the number of the microwave sources 7 is at least two; if the planes where the pair of feed ports are located are parallel, the positions of the pair of feed ports are staggered and/or the polarization directions of microwaves input by the pair of feed ports are different, so that mutual coupling of the microwaves input by the pair of parallel feed ports is reduced. According to the structure, the number of the microwave sources 7 is at least two, and when the number is more, the power of the microwave sources 7 can be selected to be smaller, so that the cost is reduced; when the number of the microwave sources 7 is large, some feed ports are inevitably opposite, so that the microwaves of the two microwave sources are easily coupled with each other, the microwaves cannot be fully utilized, and the microwave sources 7 can be damaged; the mode of reducing mutual coupling can stagger the feed ports which are opposite to each other, so that the feed ports are not opposite to each other, or the microwave polarization directions with the polarization directions are different, so that the mutual coupling can be reduced, the utilization rate of energy sources is improved, and the microwave source 7 is protected.
Further, the polarization directions of the microwaves input by the pair of feed ports are orthogonal. According to the structure, mutual coupling is minimum when microwave polarization directions of the paired feed ports are orthogonal, and energy utilization rate is also highest.
Further, the sizes of the air inlet 2 and the air outlet 3 are smaller than the diameter section of the material pipe 6. According to the structure, the material pipe 6 in fig. 2 is larger in diameter than the air inlet 2 and the air outlet 3, and can contain more activated carbon than that in fig. 1.
Furthermore, the path section of the material pipe 6 is connected with the air inlet 2 and/or the air outlet 3 through the diameter-variable section 83. As can be seen from the above structure, in fig. 3, the path section of the material pipe 6 is connected with the air inlet 2 and the air outlet 3 through the reducing section 83, or a certain opening is connected with the path section of the material pipe 6 through the reducing section 83, and the reducing section 83 is similar to a funnel; the diameter passing section and the diameter changing section 83 of the material pipe 6 can be integrated, so that the sealing performance is better; the tapered section 83 also facilitates the activated carbon in the coarse material pipe 6 to fully contact the specific gas entering from the fine gas inlet 2.
Further, a ventilation block 84 is arranged at the front or rear air inlet position of the air inlet 2; the size of the air holes of the air permeable block 84 is smaller than the size of the activated carbon particles, so that the activated carbon particles cannot pass through the air holes of the air permeable block 84. In view of the above structure, fig. 4 shows that the air inlet 2 is provided with an air permeable block 84 at the air inlet front position; FIG. 5 shows a ventilation block 84 provided at the position after the air inlet 2 has entered air; the air permeable block 84 enables specific air to enter the material pipe 6 from the air inlet 2 to have the function of uniform specific air; the air permeable block 84 can be made of quartz and can insulate certain heat, when the material pipe 6 is vertically arranged, the air inlet 2 is arranged below, the air outlet 3 is arranged above, specific gas can conveniently go from bottom to top, but the active carbon is influenced by gravity, and the air permeable block 84 prevents the active carbon from falling out of the air inlet 2.
Further, the reaction unit 1 further comprises a flip cover 85 and an air inlet pipe 86; an air inlet pipe 86 is arranged on the flip cover 85; the intake pipe 86 is used for inputting specific gas to the intake port 2; the flap 85 serves to prevent the air permeable block 84 from entering the air inlet tube 86. As can be seen from the above structure, the cut-off waveguide 5 corresponding to the air inlet 2 in fig. 4 is fixed on the shielding shell 4, and the flip 85 can be opened and disposed on the cut-off waveguide 5; a lid 85 of fig. 5 is openably provided on the shield case 4, the cut-off waveguide 5 is fixed to the lid 85, and the intake pipe 86 is fixed to the lid 85 and passes through the cut-off waveguide 5.
Further, a temperature sensor 87, a flow meter 88 and a regulating valve 89 are included; the temperature sensor 87 is used for monitoring the temperature of the gas output from the gas outlet 3; the flow meter 88 is used for monitoring the flow rate of the specific gas input into the gas inlet 2; the regulating valve 89 is used to control the flow rate of the specific gas inputted to the gas inlet 2. According to the structure, the temperature of the gas output from the gas outlet 3 is measured by the temperature sensor 87, so that the inaccuracy caused by directly measuring the temperature of the activated carbon is avoided, and whether the required process temperature is reached is judged by monitoring the gas outlet temperature on line.
Further, there are two reaction units 1; the shielding shell 4 is in a six-sided straight cylinder shape; one side surface of the shielding shells 4 of the two reaction units 1 is attached; the other five side surfaces of the shielding shells 4 of the two reaction units 1 are respectively provided with a slot antenna 82; the gas inlets 2 of the two reaction units 1 share one flow meter 88 and one regulating valve 89. According to the structure, as shown in fig. 8, the two reaction units 1 work simultaneously, only one air inlet device and one air outlet processing device are needed, the processing capacity of the activated carbon is improved, and the shielding shell 4 is in a six-sided straight cylinder shape and is convenient to splice.
A method for regenerating activated carbon by an activated carbon heating reactor adopts the activated carbon heating reactor and comprises a pre-exhausting step, a heating step and a cooling step; the pre-exhaust step specifically comprises the following steps: after the activated carbon to be regenerated is filled into the material pipe 6, the regulating valve 89 is opened, nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3, so that the activated carbon to be regenerated is in an anaerobic environment; the heating steps are specifically as follows: the microwave source 7 starts to work, microwaves are input into the shielding shell 4 from the feed port, the microwaves penetrate through the material pipe 6 and then are absorbed by the activated carbon, the activated carbon is heated, impurities are discharged from the air outlet 3 along with nitrogen, and the activated carbon is regenerated; the cooling step specifically comprises: the microwave source 7 stops working, the air inlet 2 continues inputting nitrogen into the material pipe 6, the high-temperature activated carbon is rapidly cooled, and finally the adjusting valve 89 is closed to discharge the activated carbon.
The invention has the beneficial effects that:
the invention discloses an activated carbon heating reactor and a method for regenerating activated carbon, belonging to the technical field of microwave application and comprising at least one reaction unit; the reaction unit comprises an air inlet, an air outlet, a shielding shell, a cut-off waveguide, a material pipe and at least one microwave source; a microwave-permeable material pipe with two ends extending to the top surface and the bottom surface of the shielding shell is arranged in the shielding shell and used for containing active carbon; the gas inlet inputs specific gas, and the gas outlet outputs gas discharged from the other end of the material pipe; the specific gas passes through a cut-off waveguide respectively before being input into the gas inlet and after being output from the gas outlet; the cut-off waveguide is used for reducing the escape of microwaves from the gas inlet and the gas outlet; the side surface of the shielding shell is provided with feed ports which are in one-to-one correspondence with the microwave sources; the microwave source is used for inputting microwave to the feed port directly or through a waveguide or through a slot antenna to regenerate the activated carbon. The activated carbon heating reactor and the method for regenerating the activated carbon quickly regenerate the activated carbon by using microwaves, and have the advantages of simple working procedure and good regeneration effect.
Drawings
FIG. 1 is a schematic view of a first structure of a reaction unit according to the present invention;
FIG. 2 is a schematic view of a second structure of a reaction unit according to the present invention;
FIG. 3 is a schematic view of a third structure of the reaction unit of the present invention;
FIG. 4 is a schematic diagram of a fourth structure of the reaction unit of the present invention;
FIG. 5 is a schematic diagram of a fifth structure of the reaction unit of the present invention;
FIG. 6 is a schematic diagram of a sixth configuration of a reaction unit according to the present invention;
FIG. 7 is a schematic diagram showing a seventh structure of a reaction unit according to the present invention;
FIG. 8 is a schematic top view of an activated carbon heated reactor according to the present invention;
in the drawings: 1-reaction unit, 2-gas inlet, 3-gas outlet, 4-shielding shell, 5-cut-off waveguide, 6-material pipe, 7-microwave source, 81-waveguide, 82-slot antenna, 83-diameter-variable section, 84-gas permeable block, 85-flip, 86-gas inlet pipe, 87-temperature sensor, 88-flowmeter and 89-regulating valve.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and the embodiments, but the present invention is not limited to the following examples.
The first embodiment is as follows:
see figures 1-8. An activated carbon heated reactor comprising at least one reaction unit 1; the reaction unit 1 comprises an air inlet 2, an air outlet 3, a shielding shell 4, a cut-off waveguide 5, a material pipe 6 and at least one microwave source 7; a material pipe 6 with two ends extending to the top surface and the bottom surface of the shielding shell 4 is arranged in the shielding shell 4; the material pipe 6 is used for containing activated carbon, and the material pipe 6 can penetrate microwaves; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas passes through a cut-off waveguide 5 before being input into the gas inlet 2 and after being output from the gas outlet 3; the cut-off waveguide 5 is used for reducing the escape of microwaves from the gas inlet 2 and the gas outlet 3; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. According to the structure, the activated carbon heating reactor comprises at least one reaction unit 1, and when the quantity of the simultaneously regenerated activated carbon needs to be increased, a plurality of reaction units 1 can be arranged in parallel; the material pipe 6 is arranged in the shielding shell 4, two ends of the material pipe 6 extend towards the top surface and the bottom surface of the shielding shell 4, the material pipe 6 can be a pipe extending in the straight direction or a pipe extending in a spiral manner or a pipe with other structures, and the material pipe 6 is used for containing active carbon, so that the active carbon at each section of the material pipe 6 can fully absorb microwaves and fully heat the active carbon in the whole material pipe 6; the diameter of the material pipe 6 cannot be too large, the diameter is generally 120mm, the length is 1000mm, and the active carbon positioned in the middle of the material pipe 6 cannot absorb microwaves if the diameter is too large; the material pipe 6 can be permeable to microwaves, and the material of the material pipe 6 is usually quartz, ceramic and other substances permeable to microwaves; the material of the inner wall of the shielding shell 4 is usually metal, which can reflect the microwave, reduce the escape of the microwave after the microwave enters the shielding shell 4 from the feed port, and ensure that the microwave is fully absorbed by the active carbon; the number of the microwave sources 7 is at least one, and the smaller the power of the microwave sources 7, the more the number of the needed microwave sources 7 is; the invention adopts a three-phase five-wire system with microwave frequency of 2450MHz +/-50 MHz and voltage of 380V; when two reaction units 1 are arranged in parallel, 10 microwave sources with the power of 1kW can be arranged, and the performance-to-cost ratio is high; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas is generally stable gas, and nitrogen is adopted as the specific gas; after the activated carbon to be regenerated is filled into the material pipe 6, nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3, so that the activated carbon to be regenerated is in an oxygen-insulated environment; the microwave source 7 starts to work, microwaves are input into the shielding shell 4 from the feed port, the microwaves penetrate through the material pipe 6 and then are absorbed by the activated carbon, the activated carbon is heated, impurities are discharged from the air outlet 3 along with nitrogen, and the activated carbon is regenerated; the microwave source 7 stops working, the air inlet 2 continues to input nitrogen into the material pipe 6, the high-temperature active carbon is rapidly cooled, and the active carbon is discharged. When the microwave source 7 works, the temperature is raised to about 400 ℃ when normal-temperature nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3. The microwave can not only heat the active carbon quickly, but also avoid the complicated procedures of introducing water vapor and the like, and the discharge caused by the microwave can increase new pores in the active carbon, thereby being beneficial to improving the adsorption capacity of the active carbon and having better regeneration effect. Due to the existence of the air inlet 2 and the air outlet 3, openings are necessarily required to be arranged on the shielding shell 4, which causes that microwaves can escape from the air inlet 2 and the air outlet 3, and the arrangement of the cut-off waveguide 5 reduces the escape of the microwaves; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. Some microwave sources 7 are provided with waveguides, so that microwaves can be directly input from a feed port, the microwave sources 7 can also input the microwaves to the feed port through the waveguides 81 or through the slot antennas 82, when the waveguide 81 is directly connected with the structure, one side surface of the shielding shell 4 can be provided with a plurality of feed ports to fully cover the material pipe 6, when the slot antennas 82 are adopted, the slot antennas 82 also extend along the top surface and the bottom surface of the shielding shell 4, the slot antennas 82 have various structures, the simplest structure is that, for example, a rectangular waveguide wide edge is provided with a plurality of slots, and the microwaves enter the feed port from the slots; the slot antenna 82 structure employed in fig. 7 and 8; the size of the air inlet 2 and the size of the air outlet 3 are limited by the cut-off waveguide 5, the cut-off waveguide 5 in the figure 1 is fixed on the shielding shell 4, the air outlet 3 is communicated with the outside through an air outlet pipe, and the air outlet pipe penetrates through the corresponding cut-off waveguide 5; the air inlet 2 is used for air inlet through an air inlet pipe, and the air inlet pipe penetrates through the corresponding cut-off waveguide 5; the material pipe 6 adopted in fig. 1 is a straight pipe and adopts a waveguide 81 direct connection structure; the diameter of the material pipe 6 in fig. 1 is equivalent to the size of the air inlet 2 and the air outlet 3, but the contained amount of the activated carbon is small; in fig. 2, the diameter of the material pipe 6 is larger than that of the air inlet 2 and the air outlet 3, so that more activated carbon can be accommodated.
Example two:
see figures 1-8. An activated carbon heated reactor comprising at least one reaction unit 1; the reaction unit 1 comprises an air inlet 2, an air outlet 3, a shielding shell 4, a cut-off waveguide 5, a material pipe 6 and at least one microwave source 7; a material pipe 6 with two ends extending to the top surface and the bottom surface of the shielding shell 4 is arranged in the shielding shell 4; the material pipe 6 is used for containing activated carbon, and the material pipe 6 can penetrate microwaves; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas passes through a cut-off waveguide 5 before being input into the gas inlet 2 and after being output from the gas outlet 3; the cut-off waveguide 5 is used for reducing the escape of microwaves from the gas inlet 2 and the gas outlet 3; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. According to the structure, the activated carbon heating reactor comprises at least one reaction unit 1, and when the quantity of the simultaneously regenerated activated carbon needs to be increased, a plurality of reaction units 1 can be arranged in parallel; the material pipe 6 is arranged in the shielding shell 4, two ends of the material pipe 6 extend towards the top surface and the bottom surface of the shielding shell 4, the material pipe 6 can be a pipe extending in the straight direction or a pipe extending in a spiral manner or a pipe with other structures, and the material pipe 6 is used for containing active carbon, so that the active carbon at each section of the material pipe 6 can fully absorb microwaves and fully heat the active carbon in the whole material pipe 6; the diameter of the material pipe 6 cannot be too large, the diameter is generally 120mm, the length is 1000mm, and the active carbon positioned in the middle of the material pipe 6 cannot absorb microwaves if the diameter is too large; the material pipe 6 can be permeable to microwaves, and the material of the material pipe 6 is usually quartz, ceramic and other substances permeable to microwaves; the material of the inner wall of the shielding shell 4 is usually metal, which can reflect the microwave, reduce the escape of the microwave after the microwave enters the shielding shell 4 from the feed port, and ensure that the microwave is fully absorbed by the active carbon; the number of the microwave sources 7 is at least one, and the smaller the power of the microwave sources 7, the more the number of the needed microwave sources 7 is; the invention adopts a three-phase five-wire system with microwave frequency of 2450MHz +/-50 MHz and voltage of 380V; when two reaction units 1 are arranged in parallel, 10 microwave sources with the power of 1kW can be arranged, and the performance-to-cost ratio is high; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas is generally stable gas, and nitrogen is adopted as the specific gas; after the activated carbon to be regenerated is filled into the material pipe 6, nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3, so that the activated carbon to be regenerated is in an oxygen-insulated environment; the microwave source 7 starts to work, microwaves are input into the shielding shell 4 from the feed port, the microwaves penetrate through the material pipe 6 and then are absorbed by the activated carbon, the activated carbon is heated, impurities are discharged from the air outlet 3 along with nitrogen, and the activated carbon is regenerated; the microwave source 7 stops working, the air inlet 2 continues to input nitrogen into the material pipe 6, the high-temperature active carbon is rapidly cooled, and the active carbon is discharged. When the microwave source 7 works, the temperature is raised to about 400 ℃ when normal-temperature nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3. The microwave can not only heat the active carbon quickly, but also avoid the complicated procedures of introducing water vapor and the like, and the discharge caused by the microwave can increase new pores in the active carbon, thereby being beneficial to improving the adsorption capacity of the active carbon and having better regeneration effect. Due to the existence of the air inlet 2 and the air outlet 3, openings are necessarily required to be arranged on the shielding shell 4, which causes that microwaves can escape from the air inlet 2 and the air outlet 3, and the arrangement of the cut-off waveguide 5 reduces the escape of the microwaves; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. Some microwave sources 7 are provided with waveguides, so that microwaves can be directly input from a feed port, the microwave sources 7 can also input the microwaves to the feed port through the waveguides 81 or through the slot antennas 82, when the waveguide 81 is directly connected with the structure, one side surface of the shielding shell 4 can be provided with a plurality of feed ports to fully cover the material pipe 6, when the slot antennas 82 are adopted, the slot antennas 82 also extend along the top surface and the bottom surface of the shielding shell 4, the slot antennas 82 have various structures, the simplest structure is that, for example, a rectangular waveguide wide edge is provided with a plurality of slots, and the microwaves enter the feed port from the slots; the slot antenna 82 structure employed in fig. 7 and 8; the size of the air inlet 2 and the size of the air outlet 3 are limited by the cut-off waveguide 5, the cut-off waveguide 5 in the figure 1 is fixed on the shielding shell 4, the air outlet 3 is communicated with the outside through an air outlet pipe, and the air outlet pipe penetrates through the corresponding cut-off waveguide 5; the air inlet 2 is used for air inlet through an air inlet pipe, and the air inlet pipe penetrates through the corresponding cut-off waveguide 5; the material pipe 6 adopted in fig. 1 is a straight pipe and adopts a waveguide 81 direct connection structure; the diameter of the material pipe 6 in fig. 1 is equivalent to the size of the air inlet 2 and the air outlet 3, but the contained amount of the activated carbon is small; in fig. 2, the diameter of the material pipe 6 is larger than that of the air inlet 2 and the air outlet 3, so that more activated carbon can be accommodated.
At least two microwave sources 7 are provided; if the planes where the pair of feed ports are located are parallel, the positions of the pair of feed ports are staggered and/or the polarization directions of microwaves input by the pair of feed ports are different, so that mutual coupling of the microwaves input by the pair of parallel feed ports is reduced. According to the structure, the number of the microwave sources 7 is at least two, and when the number is more, the power of the microwave sources 7 can be selected to be smaller, so that the cost is reduced; when the number of the microwave sources 7 is large, some feed ports are inevitably opposite, so that the microwaves of the two microwave sources are easily coupled with each other, the microwaves cannot be fully utilized, and the microwave sources 7 can be damaged; the mode of reducing mutual coupling can stagger the feed ports which are opposite to each other, so that the feed ports are not opposite to each other, or the microwave polarization directions with the polarization directions are different, so that the mutual coupling can be reduced, the utilization rate of energy sources is improved, and the microwave source 7 is protected. The polarization directions of the microwaves input by the pair of feed ports are orthogonal. According to the structure, mutual coupling is minimum when microwave polarization directions of the paired feed ports are orthogonal, and energy utilization rate is also highest.
Example three:
see figures 3-7. An activated carbon heated reactor comprising at least one reaction unit 1; the reaction unit 1 comprises an air inlet 2, an air outlet 3, a shielding shell 4, a cut-off waveguide 5, a material pipe 6 and at least one microwave source 7; a material pipe 6 with two ends extending to the top surface and the bottom surface of the shielding shell 4 is arranged in the shielding shell 4; the material pipe 6 is used for containing activated carbon, and the material pipe 6 can penetrate microwaves; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas passes through a cut-off waveguide 5 before being input into the gas inlet 2 and after being output from the gas outlet 3; the cut-off waveguide 5 is used for reducing the escape of microwaves from the gas inlet 2 and the gas outlet 3; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. According to the structure, the activated carbon heating reactor comprises at least one reaction unit 1, and when the quantity of the simultaneously regenerated activated carbon needs to be increased, a plurality of reaction units 1 can be arranged in parallel; the material pipe 6 is arranged in the shielding shell 4, two ends of the material pipe 6 extend towards the top surface and the bottom surface of the shielding shell 4, the material pipe 6 can be a pipe extending in the straight direction or a pipe extending in a spiral manner or a pipe with other structures, and the material pipe 6 is used for containing active carbon, so that the active carbon at each section of the material pipe 6 can fully absorb microwaves and fully heat the active carbon in the whole material pipe 6; the diameter of the material pipe 6 cannot be too large, the diameter is generally 120mm, the length is 1000mm, and the active carbon positioned in the middle of the material pipe 6 cannot absorb microwaves if the diameter is too large; the material pipe 6 can be permeable to microwaves, and the material of the material pipe 6 is usually quartz, ceramic and other substances permeable to microwaves; the material of the inner wall of the shielding shell 4 is usually metal, which can reflect the microwave, reduce the escape of the microwave after the microwave enters the shielding shell 4 from the feed port, and ensure that the microwave is fully absorbed by the active carbon; the number of the microwave sources 7 is at least one, and the smaller the power of the microwave sources 7, the more the number of the needed microwave sources 7 is; the invention adopts a three-phase five-wire system with microwave frequency of 2450MHz +/-50 MHz and voltage of 380V; when two reaction units 1 are arranged in parallel, 10 microwave sources with the power of 1kW can be arranged, and the performance-to-cost ratio is high; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas is generally stable gas, and nitrogen is adopted as the specific gas; after the activated carbon to be regenerated is filled into the material pipe 6, nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3, so that the activated carbon to be regenerated is in an oxygen-insulated environment; the microwave source 7 starts to work, microwaves are input into the shielding shell 4 from the feed port, the microwaves penetrate through the material pipe 6 and then are absorbed by the activated carbon, the activated carbon is heated, impurities are discharged from the air outlet 3 along with nitrogen, and the activated carbon is regenerated; the microwave source 7 stops working, the air inlet 2 continues to input nitrogen into the material pipe 6, the high-temperature active carbon is rapidly cooled, and the active carbon is discharged. When the microwave source 7 works, the temperature is raised to about 400 ℃ when normal-temperature nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3. The microwave can not only heat the active carbon quickly, but also avoid the complicated procedures of introducing water vapor and the like, and the discharge caused by the microwave can increase new pores in the active carbon, thereby being beneficial to improving the adsorption capacity of the active carbon and having better regeneration effect. Due to the existence of the air inlet 2 and the air outlet 3, openings are necessarily required to be arranged on the shielding shell 4, which causes that microwaves can escape from the air inlet 2 and the air outlet 3, and the arrangement of the cut-off waveguide 5 reduces the escape of the microwaves; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. Some microwave sources 7 are provided with waveguides, so that microwaves can be directly input from the feed port, the microwave sources 7 can also input the microwaves to the feed port through the waveguides 81 or through the slot antennas 82, when the waveguide 81 is directly connected with the structure, one side surface of the shielding shell 4 can be provided with a plurality of feed ports to fully cover the material pipe 6, when the slot antennas 82 are adopted, the slot antennas 82 also extend along the top surface and the bottom surface of the shielding shell 4, the slot antennas 82 are various in structure, the simplest structure is that a plurality of slots are formed in the wide side of one rectangular waveguide, and the microwaves enter the feed port from the slots.
The sizes of the air inlet 2 and the air outlet 3 are smaller than the diameter section of the material pipe 6. The diameter section of the material pipe 6 is connected with the air inlet 2 and/or the air outlet 3 through the diameter-variable section 83. As can be seen from the above structure, in fig. 3, the path section of the material pipe 6 is connected with the air inlet 2 and the air outlet 3 through the reducing section 83, or a certain opening is connected with the path section of the material pipe 6 through the reducing section 83, and the reducing section 83 is similar to a funnel; the diameter passing section and the diameter changing section 83 of the material pipe 6 can be integrated, so that the sealing performance is better; the tapered section 83 also facilitates the activated carbon in the coarse material pipe 6 to fully contact the specific gas entering from the fine gas inlet 2.
Example four:
see figures 4-7. An activated carbon heated reactor comprising at least one reaction unit 1; the reaction unit 1 comprises an air inlet 2, an air outlet 3, a shielding shell 4, a cut-off waveguide 5, a material pipe 6 and at least one microwave source 7; a material pipe 6 with two ends extending to the top surface and the bottom surface of the shielding shell 4 is arranged in the shielding shell 4; the material pipe 6 is used for containing activated carbon, and the material pipe 6 can penetrate microwaves; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas passes through a cut-off waveguide 5 before being input into the gas inlet 2 and after being output from the gas outlet 3; the cut-off waveguide 5 is used for reducing the escape of microwaves from the gas inlet 2 and the gas outlet 3; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. According to the structure, the activated carbon heating reactor comprises at least one reaction unit 1, and when the quantity of the simultaneously regenerated activated carbon needs to be increased, a plurality of reaction units 1 can be arranged in parallel; the material pipe 6 is arranged in the shielding shell 4, two ends of the material pipe 6 extend towards the top surface and the bottom surface of the shielding shell 4, the material pipe 6 can be a pipe extending in the straight direction or a pipe extending in a spiral manner or a pipe with other structures, and the material pipe 6 is used for containing active carbon, so that the active carbon at each section of the material pipe 6 can fully absorb microwaves and fully heat the active carbon in the whole material pipe 6; the diameter of the material pipe 6 cannot be too large, the diameter is generally 120mm, the length is 1000mm, and the active carbon positioned in the middle of the material pipe 6 cannot absorb microwaves if the diameter is too large; the material pipe 6 can be permeable to microwaves, and the material of the material pipe 6 is usually quartz, ceramic and other substances permeable to microwaves; the material of the inner wall of the shielding shell 4 is usually metal, which can reflect the microwave, reduce the escape of the microwave after the microwave enters the shielding shell 4 from the feed port, and ensure that the microwave is fully absorbed by the active carbon; the number of the microwave sources 7 is at least one, and the smaller the power of the microwave sources 7, the more the number of the needed microwave sources 7 is; the invention adopts a three-phase five-wire system with microwave frequency of 2450MHz +/-50 MHz and voltage of 380V; when two reaction units 1 are arranged in parallel, 10 microwave sources with the power of 1kW can be arranged, and the performance-to-cost ratio is high; the gas inlet 2 is used for inputting specific gas to one end of the material pipe 6, and the gas outlet 3 is used for outputting gas discharged from the other end of the material pipe 6; the specific gas is generally stable gas, and nitrogen is adopted as the specific gas; after the activated carbon to be regenerated is filled into the material pipe 6, nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3, so that the activated carbon to be regenerated is in an oxygen-insulated environment; the microwave source 7 starts to work, microwaves are input into the shielding shell 4 from the feed port, the microwaves penetrate through the material pipe 6 and then are absorbed by the activated carbon, the activated carbon is heated, impurities are discharged from the air outlet 3 along with nitrogen, and the activated carbon is regenerated; the microwave source 7 stops working, the air inlet 2 continues to input nitrogen into the material pipe 6, the high-temperature active carbon is rapidly cooled, and the active carbon is discharged. When the microwave source 7 works, the temperature is raised to about 400 ℃ when normal-temperature nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3. The microwave can not only heat the active carbon quickly, but also avoid the complicated procedures of introducing water vapor and the like, and the discharge caused by the microwave can increase new pores in the active carbon, thereby being beneficial to improving the adsorption capacity of the active carbon and having better regeneration effect. Due to the existence of the air inlet 2 and the air outlet 3, openings are necessarily required to be arranged on the shielding shell 4, which causes that microwaves can escape from the air inlet 2 and the air outlet 3, and the arrangement of the cut-off waveguide 5 reduces the escape of the microwaves; the side surface of the shielding shell 4 is provided with feed ports which are in one-to-one correspondence with the microwave sources 7; the microwave source 7 is used for inputting microwaves to the feed port directly or through a waveguide 81 or through a slot antenna 82 to regenerate the activated carbon. Some microwave sources 7 are provided with waveguides, so that microwaves can be directly input from the feed port, the microwave sources 7 can also input the microwaves to the feed port through the waveguides 81 or through the slot antennas 82, when the waveguide 81 is directly connected with the structure, one side surface of the shielding shell 4 can be provided with a plurality of feed ports to fully cover the material pipe 6, when the slot antennas 82 are adopted, the slot antennas 82 also extend along the top surface and the bottom surface of the shielding shell 4, the slot antennas 82 are various in structure, the simplest structure is that a plurality of slots are formed in the wide side of one rectangular waveguide, and the microwaves enter the feed port from the slots.
A ventilation block 84 is arranged at the front or rear air inlet position of the air inlet 2; the size of the air holes of the air permeable block 84 is smaller than the size of the activated carbon particles, so that the activated carbon particles cannot pass through the air holes of the air permeable block 84. In view of the above structure, fig. 4 shows that the air inlet 2 is provided with an air permeable block 84 at the air inlet front position; FIG. 5 shows a ventilation block 84 provided at the position after the air inlet 2 has entered air; the air permeable block 84 enables specific air to enter the material pipe 6 from the air inlet 2 to have the function of uniform specific air; the air permeable block 84 can be made of quartz and can insulate certain heat, when the material pipe 6 is vertically arranged, the air inlet 2 is arranged below, the air outlet 3 is arranged above, specific gas can conveniently go from bottom to top, but the active carbon is influenced by gravity, and the air permeable block 84 prevents the active carbon from falling out of the air inlet 2.
The reaction unit 1 further comprises a flip cover 85 and an air inlet pipe 86; an air inlet pipe 86 is arranged on the flip cover 85; the intake pipe 86 is used for inputting specific gas to the intake port 2; the flap 85 serves to prevent the air permeable block 84 from entering the air inlet tube 86. As can be seen from the above structure, the cut-off waveguide 5 corresponding to the air inlet 2 in fig. 4 is fixed on the shielding shell 4, and the flip 85 can be opened and disposed on the cut-off waveguide 5; a lid 85 of fig. 5 is openably provided on the shield case 4, the cut-off waveguide 5 is fixed to the lid 85, and the intake pipe 86 is fixed to the lid 85 and passes through the cut-off waveguide 5.
Also included are a temperature sensor 87, a flow meter 88 and a regulating valve 89; the temperature sensor 87 is used for monitoring the temperature of the gas output from the gas outlet 3; the flow meter 88 is used for monitoring the flow rate of the specific gas input into the gas inlet 2; the regulating valve 89 is used to control the flow rate of the specific gas inputted to the gas inlet 2. According to the structure, the temperature of the gas output from the gas outlet 3 is measured by the temperature sensor 87, so that the inaccuracy caused by directly measuring the temperature of the activated carbon is avoided, and whether the required process temperature is reached is judged by monitoring the gas outlet temperature on line.
The number of the reaction units 1 is two; the shielding shell 4 is in a six-sided straight cylinder shape; one side surface of the shielding shells 4 of the two reaction units 1 is attached; the other five side surfaces of the shielding shells 4 of the two reaction units 1 are respectively provided with a slot antenna 82; the gas inlets 2 of the two reaction units 1 share one flow meter 88 and one regulating valve 89. According to the structure, as shown in fig. 8, the two reaction units 1 work simultaneously, only one air inlet device and one air outlet processing device are needed, the processing capacity of the activated carbon is improved, and the shielding shell 4 is in a six-sided straight cylinder shape and is convenient to splice.
Example five:
see fig. 7. A method for regenerating activated carbon by an activated carbon heating reactor adopts the activated carbon heating reactor and comprises a pre-exhausting step, a heating step and a cooling step; the pre-exhaust step specifically comprises the following steps: after the activated carbon to be regenerated is filled into the material pipe 6, the regulating valve 89 is opened, nitrogen is input into the material pipe 6 from the air inlet 2 and is discharged from the air outlet 3, so that the activated carbon to be regenerated is in an anaerobic environment; the heating steps are specifically as follows: the microwave source 7 starts to work, microwaves are input into the shielding shell 4 from the feed port, the microwaves penetrate through the material pipe 6 and then are absorbed by the activated carbon, the activated carbon is heated, impurities are discharged from the air outlet 3 along with nitrogen, and the activated carbon is regenerated; the cooling step specifically comprises: the microwave source 7 stops working, the air inlet 2 continues inputting nitrogen into the material pipe 6, the high-temperature activated carbon is rapidly cooled, and finally the adjusting valve 89 is closed to discharge the activated carbon.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The activated carbon heating reactor is characterized in that: comprising at least one reaction unit (1); the reaction unit (1) comprises an air inlet (2), an air outlet (3), a shielding shell (4), a cut-off waveguide (5), a material pipe (6) and at least one microwave source (7); a material pipe (6) with two ends extending to the top surface and the bottom surface of the shielding shell (4) is arranged in the shielding shell (4); the material pipe (6) is used for containing activated carbon, and the material pipe (6) can be permeable to microwaves; the gas inlet (2) is used for inputting specific gas to one end of the material pipe (6), and the gas outlet (3) is used for outputting gas discharged from the other end of the material pipe (6); the specific gas passes through a cut-off waveguide (5) before being input into the gas inlet (2) and after being output from the gas outlet (3); the cut-off waveguide (5) is used for reducing the escape of microwaves from the gas inlet (2) and the gas outlet (3); the side surface of the shielding shell (4) is provided with feed ports which are in one-to-one correspondence with the microwave sources (7); the microwave source (7) is used for inputting microwaves to the feed port directly or through a waveguide (81) or through a slot antenna (82) to regenerate the activated carbon.
2. The activated carbon heating reactor of claim 1, wherein: at least two microwave sources (7) are provided; if the planes where the pair of feed ports are located are parallel, the positions of the pair of feed ports are staggered and/or the polarization directions of microwaves input by the pair of feed ports are different, so that mutual coupling of the microwaves input by the pair of parallel feed ports is reduced.
3. The activated carbon heating reactor of claim 2, wherein: the polarization directions of the microwaves input by the pair of feed ports are orthogonal.
4. The activated carbon heating reactor of claim 1, wherein: the sizes of the air inlet (2) and the air outlet (3) are smaller than the drift diameter section of the material pipe (6).
5. The activated carbon heating reactor of claim 4, wherein: the drift diameter section of the material pipe (6) is connected with the air inlet (2) and/or the air outlet (3) through the reducing section (83).
6. The activated carbon heating reactor of claim 1, wherein: a ventilation block (84) is arranged at the front or rear air inlet position of the air inlet (2); the size of the air holes of the air permeable block (84) is smaller than the size of the activated carbon particles, so that the activated carbon particles cannot pass through the air holes of the air permeable block (84).
7. The activated carbon heating reactor of claim 6, wherein: the reaction unit (1) further comprises a flip cover (85) and an air inlet pipe (86); an air inlet pipe (86) is arranged on the flip cover (85); the air inlet pipe (86) is used for inputting specific gas to the air inlet (2); the flap (85) is used to prevent the air permeable block (84) from entering the air inlet pipe (86).
8. The activated carbon heating reactor of claim 1, wherein: the device also comprises a temperature sensor (87), a flow meter (88) and a regulating valve (89); the temperature sensor (87) is used for monitoring the temperature of the gas output by the gas outlet (3); the flow meter (88) is used for monitoring the flow rate of the specific gas input into the gas inlet (2); the regulating valve (89) is used for controlling the flow of the specific gas input into the gas inlet (2).
9. The activated carbon heating reactor of claim 8, wherein: the number of the reaction units (1) is two; the shielding shell (4) is in a six-sided straight cylinder shape; one side surface of the shielding shell (4) of the two reaction units (1) is attached; the other five side surfaces of the shielding shells (4) of the two reaction units (1) are respectively provided with a slot antenna (82); the air inlets (2) of the two reaction units (1) share one flow meter (88) and one regulating valve (89).
10. A method of regenerating activated carbon in an activated carbon heated reactor, the method comprising: the reactor is heated by using the activated carbon as claimed in claim 8, which comprises a pre-venting step, a heating step and a cooling step; the pre-exhaust step specifically comprises the following steps: after the activated carbon to be regenerated is filled into the material pipe (6), the regulating valve (89) is opened, nitrogen is input into the material pipe (6) from the air inlet (2) and is discharged from the air outlet (3), so that the activated carbon to be regenerated is in an oxygen-insulated environment; the heating steps are specifically as follows: the microwave source (7) starts to work, microwaves are input into the shielding shell (4) from the feed port, the microwaves penetrate through the material pipe (6) and then are absorbed by the activated carbon, the activated carbon is heated, impurities are discharged from the gas outlet (3) along with nitrogen, and the activated carbon is regenerated; the cooling step specifically comprises: and (3) stopping the microwave source (7), continuously inputting nitrogen into the material pipe (6) through the air inlet (2), rapidly cooling the high-temperature activated carbon, and finally closing the regulating valve (89) and discharging the activated carbon.
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