CN117883932A - Low-energy electron radiation CO purification in airtight space2O and O2Regeneration integrated system - Google Patents
Low-energy electron radiation CO purification in airtight space2O and O2Regeneration integrated system Download PDFInfo
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Abstract
The invention discloses a low-energy electron radiation purification CO 2 and O 2 regeneration integrated system in a closed space, which comprises the following components: the CO 2 reduction reaction cabin is internally provided with a reaction cavity, an objective table for placing a catalyst is arranged in the reaction cavity, and the CO 2 reduction reaction cabin is provided with an electron gun interface; the low-energy electron source is connected with the CO 2 reduction reaction cabin through an electron gun interface, and an electron beam extraction port of the low-energy electron source corresponds to the objective table; the CO 2 enrichment device is connected with a circulating pump, and a CO 2 capturing module and a heating module connected with the CO 2 capturing module are arranged in the CO 2 enrichment device; the CO 2 enrichment device is connected with the CO 2 reduction reaction cabin through a pipeline; the water vapor generating device is connected with the CO 2 reduction reaction cabin through a pipeline. The invention reduces and regenerates CO 2 into O 2 by utilizing low-energy electrons with controllable energy, realizes the timely purification of CO 2 and the regeneration of O 2 in a closed space, and solves the problem that the traditional CO 2 capturing agent and oxygen generating agent are not renewable.
Description
Technical Field
The invention belongs to the technical field of radiochemistry and radiochemistry, and particularly relates to a low-energy electron radiation purification CO 2 and O 2 regeneration integrated system in a closed space.
Background
Military enclosed spaces are one of the most common army working environments and combat carriers, and due to the metabolic activity of the human body, the operation of power equipment and the oxidation of part of materials, O 2 in the military enclosed spaces is rapidly consumed and CO 2 is produced. If the generated CO 2 is not removed in time, the concentration which is harmful to the human body can be reached, so that the concentration becomes the most main factor which threatens the safety of warriors and further influences the long-term operation capability of the military airtight space.
CO 2 concentration control is an important component in military enclosure environmental control and life support systems, which need to be maintained at low levels. The military airtight space environment has high requirement on the concentration control of CO 2, for example, in a nuclear submarine, the concentration of CO 2 generally needs to be controlled below 0.8%, and the airtight space such as a spacecraft sealed cabin far away from the ground needs to be controlled below 0.6%, which is far lower than that of a ground system. The concentration of CO 2 directly influences the product composition and the efficiency of the ionization radiation technology for purifying CO 2, and the higher concentration of CO 2 is beneficial to the accurate regulation and control of the carbon-containing fuel and the improvement of the purification efficiency. However, the low content of CO 2 in the closed space seriously affects the efficiency of reducing CO 2 by ionizing radiation. In addition, the air components of the military airtight space are complex and various, besides the main components of nitrogen, oxygen and rare gas in the atmosphere, equipment operation, volatilization and release of nonmetallic materials, metabolism of human bodies and the like in the airtight space can generate various harmful gases, such as H 2、CO、CH4, volatile Organic Compounds (VOC), gaseous pollutants such as peculiar smell gases and the like. The presence of these materials can reduce the efficiency of CO 2 by low-energy electron attachment and result in too complex product components after reduction of CO 2 by ionizing radiation, which increases the difficulty in subsequent product separation and utilization. Therefore, the selective capture and enrichment of CO 2 in the closed space and the participation in the low-energy electron attaching reduction reaction are key to improving the efficiency of purifying CO 2 by low-energy electron radiation.
The conventional CO 2 capturing method mainly comprises an alcohol amine solution absorption method, an adsorption separation method, a membrane separation method and the like. Compared with the technologies such as a membrane separation method, a solution absorption method and the like, the absorption method is realized based on intermolecular attraction between the gas and the active points on the surface of the adsorbent, has the advantages of simple process, large absorption capacity, high separation efficiency, low energy consumption, strong adaptability, recycling and the like, and is an ideal method for controlling the concentration of CO 2 in the closed space such as a manned spacecraft, a space station, a spacecraft sealed cabin and the like.
The oxygen supply devices commonly used in the current closed space comprise an electrolyzed water oxygen supply device, a liquid oxygen supply device, a chemical oxygen source oxygen supply device and the like, and the methods have the advantages and the disadvantages: if the electrolytic water oxygen supply device needs to consume electric energy in the working process, oxygen can be produced, and hydrogen can be produced at the same time, and the existence of the hydrogen is a very unfavorable factor for the closed space. Chinese patent application No. 202122647554. X discloses an oxygen generating device in a closed space, which mainly realizes the supply of oxygen in the closed space through a liquid oxygen tank, but cannot solve the problem of timely cleaning CO 2. The Chinese patent application No. 202210730890.6 discloses a closed space CO 2 decomposition circulation oxygen regeneration system, which can realize the regeneration of O 2 and the removal of CO 2, and the O 2 is mainly generated by the electrolytic reaction of an SOEC electrolytic cell, but the removal of CO 2 is realized by a carbon dioxide adsorbent, so that the regeneration problem of the carbon dioxide adsorbent cannot be solved, and the use efficiency and the use time of the system are restricted.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a regeneration integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space, comprising:
The CO 2 reduction reaction cabin is internally provided with a reaction cavity, an objective table for placing a catalyst is arranged in the reaction cavity, and the CO 2 reduction reaction cabin is provided with an electron gun interface;
The low-energy electron source is connected with the CO 2 reduction reaction cabin through an electron gun interface, and an electron beam extraction port of the low-energy electron source corresponds to the objective table;
The CO 2 enrichment device is connected with a circulating pump, and a CO 2 capture module and a heating module connected with the CO 2 capture module are arranged in the CO 2 enrichment device; the CO 2 enrichment device is connected with the CO 2 reduction reaction cabin through a pipeline;
And the water vapor generating device is connected with the CO 2 reduction reaction cabin through a pipeline.
Preferably, the structure of the low-energy electron source includes:
A gun body, wherein a cathode and an anode opposite to the cathode are arranged in the gun body;
a gate electrode disposed at a rear end of the anode;
A guide focusing module disposed at a rear end of the gate, the guide focusing module comprising:
The central axis of the guide tube is coincident with the central axes of the anode, the cathode and the grid electrode, and the guide tube is communicated with the electron beam extraction port;
A plurality of Helmholtz coils disposed outside the guide tube.
Preferably, the cathode is one of a tantalum sheet, a tungsten wire and a lanthanum hexaboride electrode sheet.
Preferably, the end of the low-energy electron source is further provided with a beam monitoring module, the beam monitoring module is disposed between the guide tube and the electron beam extraction port, the beam monitoring module is a faraday cage, and includes:
The first electrode plate is arranged close to the guide tube, the second electrode plate and the third electrode plate are sequentially arranged at the rear end of the first electrode plate, and the third electrode plate is integrally connected with the triangular cylinder.
Preferably, the catalyst is a metal oxide medium catalytic material, comprising one of Cu 2O、SnO2、Co3O4、Bi2O3、In2O3 and ZnO, and is arranged on a stage to be constructed as a net-shaped template.
Preferably, wherein the CO 2 capture module and the heating module are configured to: the heating module is an electric heating plate, and the CO 2 capturing module is a porous CO 2 adsorbent capturing net arranged on the electric heating plate.
Preferably, the porous CO 2 adsorbent capturing net is made of one of biochar, silica gel, zircon sodium zeolite, metal organic frameworks MOFs and metal organic frameworks ZIF-C, AL 2O3、CeO2、La2O3.
Preferably, a radiation shielding layer is arranged outside the CO 2 reduction reaction chamber.
Preferably, the CO 2 reduction reaction chamber is also provided with a thermometer and a barometer, and a vacuumizing port on the opposite side of the CO 2 and H 2 O inlet ports
The invention at least comprises the following beneficial effects:
The invention reduces and regenerates CO 2 into O 2 by utilizing low-energy electrons with controllable energy, realizes the timely purification of CO 2 in the closed space and the regeneration of O 2, solves the problem that the traditional CO 2 capturing agent and the oxygen generating agent are not renewable, has the conversion rate of CO 2 of equipment operation of more than 50 percent and the content of O 2 in a gas product of more than 75 percent, and can meet the long-term working performance index of workers in the closed space.
According to the CO 2 capturing module and the heating module, the problem of low efficiency of purifying CO 2 by ionizing radiation under the condition of low concentration CO 2 is solved by selecting materials (biochar, silica gel, zircon sodium zeolite, metal organic frameworks MOFs and metal organic frameworks ZIF-C, AL 2O3、CeO2、La2O3) for selectively adsorbing CO 2, the heating module heats the CO 2 capturing module for adsorbing CO 2 to saturation, CO 2 is removed, the problem that a CO 2 adsorbent is not renewable in the prior art is solved, and continuous adsorption removal of CO 2 is realized.
According to the invention, H 2 O gaseous molecules are introduced to CO-reduce the H 2 O gaseous molecules and CO 2, and an accurate regulation mechanism and method of O 2 and carbon-containing products are established by changing reaction system parameters and surface properties of CO 2 catalytic module materials, so that the regulation of carbon-containing fuel for electron adhesion reduction of CO 2 is realized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a system for integrating low-energy electron radiation purification of CO 2 and O 2 regeneration in a closed space;
Fig. 2 is a schematic structural diagram of the low-energy electron source and the beam monitoring module according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It should be noted that, in the description of the present invention, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, may be a detachable connection, or may be integrally connected, may be mechanically connected, may be electrically connected, may be directly connected, may be indirectly connected through an intermediate medium, may be communication between two members, and may be understood in a specific manner by those skilled in the art.
Furthermore, in the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first and second features, or an indirect contact of the first and second features through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1-2, the present invention provides an integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space, comprising:
A CO 2 reduction reaction cabin 1, wherein a reaction cavity 2 is arranged in the reaction cabin, an objective table 3 for placing a catalyst is arranged in the reaction cavity 2, and an electron gun interface 4 is arranged in the CO 2 reduction reaction cabin 1;
A low-energy electron source 5 connected to the CO 2 reduction reaction chamber 1 through an electron gun interface 4, wherein an electron beam extraction port 51 of the low-energy electron source 5 corresponds to the stage 3;
A CO 2 enrichment device 6 connected with a circulating pump (not shown), wherein a CO 2 capturing module and a heating module connected with the CO 2 capturing module are arranged in the CO 2 enrichment device 6; the CO 2 enrichment device 6 is connected with the CO 2 reduction reaction cabin 1 through a pipeline;
and the water vapor generating device 7 is connected with the CO 2 reduction reaction cabin 1 through a pipeline.
Working principle: according to the integrated system for purifying CO 2 and regenerating O 2 by low-energy electron radiation in the closed space, CO 2 in air pumped by a circulating pump (the air composition of the closed space is complex and various and mainly comprises nitrogen, oxygen, rare gas, CO 2 and other gases) is firstly subjected to selective adsorption of CO 2 by a CO 2 capturing module in the CO 2 enrichment device 6, the CO 2 is desorbed by the CO 2 capturing module adsorbed to a saturated state by a heating module heating and heating method, and the desorbed CO 2 is conveyed into the reaction cavity 2 by a pipeline; after a certain amount of CO 2 in the reaction cavity 2 reaches, the steam generator 7 transmits a certain amount of water to the reaction cavity 2, then the low-energy electron source 5 generates low-energy electron beam, the low-energy electron beam is guided to the surface of a catalyst in the reaction cavity 2, and the low-energy electrons are attached to reduce CO 2/H2 O to generate O 2 and carbon-based fuel, so that CO 2 is removed and O 2 is regenerated. The parameters such as low-energy electron beam energy, energy divergence, current intensity and the like are regulated and controlled by controlling the voltage, power and focusing magnetic field intensity of the low-energy electron source 5, so that the O 2 yield and the accurate regulation and control of the carbon-containing fuel are realized. In the reaction process of reducing CO 2 by ionizing radiation, CO 2 can be reduced and regenerated into O 2, and generated carbanion fragments can also participate in subsequent chemical reactions to generate fuel products such as hydrocarbon, alcohols, carboxylic acids and the like. The invention is suitable for various military airtight space application scenes, and improves the long-term operation and the war viability of the military airtight space.
In the above technical solution, the structure of the low-energy electron source 5 includes:
A gun body 52 having a cathode 53 and an anode 54 opposite to the cathode 53 disposed therein;
A gate electrode 55 disposed at a rear end of the anode 54;
a guide focusing module disposed at a rear end of the gate electrode 55, the guide focusing module comprising:
a guide tube 56 having a central axis coincident with the central axes of the anode 54, cathode 53, grid 55, the guide tube 56 communicating with the electron beam extraction port 51;
A plurality of Helmholtz coils 57 are provided outside the guide tube 56.
Wherein the cathode 53 is used for emitting electrons, the grid 55 is used for controlling the actual emitting area of the cathode 53 and pre-focusing the electron beam, and the anode 54 is used for accelerating the electrons; the cathode 53 is set to be negative high voltage, the anode 54 is grounded to form a potential difference, the hot electrons emitted by the cathode 53 are accelerated to form a low-energy electron beam, and the grid 55 can control the focusing of the low-energy electron beam and the quantity of emitted electrons. The heating excitation of the cathode 53 of the low energy electron source 5 generates a large amount of low energy electrons, which is a core component of the low energy electron beam current control system, and the choice of the material of the cathode 53 has a determining effect on the emission capacity and lifetime of the low energy electron source. The cathode 53 is made of a material with high melting point and high resistivity, and the cathode 53 is heated to more than 1000 ℃ after high current passes through the cathode; in addition, a material with a low work function needs to be selected, and the outer electrons of atoms on the surface of the cathode 53 are free electrons which are out of orbit after being excited by certain heat energy and are out of the constraint of atomic nuclei.
The low-energy electrons are influenced by the geomagnetic field and the space fringing field to generate a space charge effect, so that the energy divergence of the low-energy electron beam is increased, and the motion trail of the low-energy electrons is restrained by a guiding focusing magnetic field to overcome the dispersion of electron beam spots caused by the space charge effect. The main component of the guiding and focusing module is a Helmholtz coil 57 consisting of parallel coils of enameled aluminum tubes with the outer diameter of 1.6cm, and the electron beam emitted by the low-energy electron source 5 enters the guiding tube 56 and is controlled to form controllable electron beam current through the magnetic field area guidance generated by the Helmholtz coil 57. The Helmholtz coil 57 can control the energy dispersion of the electron beam by adjusting the magnetic field strength at the center of the two coils by adjusting the applied voltage and current.
In the above technical solution, the cathode 53 is one of a tantalum sheet, a tungsten filament, and a lanthanum hexaboride electrode sheet, which have the advantages of reliable performance and long service life, and the tantalum sheet adopting the thermal emission excitation mode is selected as the cathode by comprehensively considering factors such as the working environment, the working voltage, the beam spot diameter, the beam current, and the like of the low-energy electron source 5.
In the above technical solution, the end of the low-energy electron source 5 is further provided with a beam monitoring module, the beam monitoring module is disposed between the guide tube 56 and the electron beam extraction port 51, and the beam monitoring module is a faraday cage, and includes:
the first electrode plate 58 is disposed near the guide tube, the second electrode plate 59 and the third electrode plate 510 are sequentially disposed at the rear end of the first electrode plate 58, and the third electrode plate 210 is integrally connected with the triangular cylinder 511.
Wherein the first electrode plate 58 and the second electrode plate 59 constitute a deceleration analysis field, and the third electrode plate 510 is welded with the delta 511 integrally for receiving electrons and preventing electron bounce. By scanning the voltage of the second electrode plate 59 (scanning from 0V to negative voltage), the electron beam current reaching the third electrode plate 510 is gradually reduced to 0, the electron beam current intensity of the faraday cage collector is directly measured, and then the energy intensity of the electron beam current is obtained by differential calculation of the electron beam current received by the third electrode plate 510 and the scanning voltage.
In the above technical scheme, the catalyst is a metal oxide medium catalytic material, including one of Cu 2O、SnO2、Co3O4、Bi2O3、In2O3 and ZnO, and is configured as a mesh template on the stage. The medium catalytic material which captures CO 2/H2 O, weakly binds electrons and reduces the energy barrier formed by the reaction intermediate of CO 2 is added in the reaction cavity, so that the activity of attaching and reducing CO 2 by low-energy electrons and the selectivity of carbon-containing products can be effectively regulated and controlled. The introduction of hydroxyl defects on the surface of metal oxide is one of ideal choices of dielectric materials, and can form a special hydrogen bond microenvironment on the surface, so as to realize effective capture of weakly bound electrons and stabilization of adsorption of CO 2 reaction intermediates. In the process of attaching and reducing CO 2 by low-energy electrons, firstly, CO 2 and water vapor are pre-adsorbed on the surface of a catalyst material, secondly, the electrons are captured by weak binding electrons and are subjected to surface free radical reaction, and finally, the electrons are captured by a surface free radical intermediate to form anion fragments for desorption, and carbon-containing products are formed. The rich electron capture center exists on the surface of the medium catalytic material, so that the capture of weakly bound electrons can be promoted, the energy barrier required by CO 2 reduction is reduced, the CO 2 reduction product is selectively regulated and controlled, and the CO 2 reduction efficiency is improved.
The low-energy electrons are attached to CO 2 molecules to form transient anion molecules (CO 2-) in electron-molecule resonance state, then the transient anion molecules are degenerated and dissociated into neutral O 2 molecules and negatively charged carbanion fragments, the process can reduce and regenerate CO 2 into O 2, and the generated carbanion can participate in subsequent chemical reactions to generate specific carbonaceous products such as hydrocarbons, alcohols, carboxylic acids and the like. When a low energy electron source is used to generate low energy electrons to attach and dissociate the humidified CO 2 gas, O 2 and small amounts of hydrocarbons and alcohols are detected in the product, which is believed to be the result of the reaction of carbanions with H 2 O. In addition, the energy of the attached electrons is matched with the bond energy of C=O (8.4 eV,803 kJ/mol) in CO 2, so that the selective regulation and control of specific products such as hydrocarbons, alcohols, carboxylic acids and the like are realized.
In the above technical solution, the CO 2 capturing module and the heating module are configured to: the heating module is an electric heating plate 61, and the CO 2 capturing module is a porous CO 2 adsorbent capturing net 62 arranged on the electric heating plate 61.
In the above technical solution, the material of the porous CO 2 adsorbent capturing net 62 is one of biochar, silica gel, zircon sodium zeolite, metal organic frameworks MOFs and metal organic frameworks ZIF-C, AL 2O3、CeO2、La2O3, and the above material can realize selective adsorption of CO 2 in mixed air.
When the CO 2 adsorbent trap 62 adsorbs CO 2 to saturation, the electrical heating plate 61 heats up to desorb CO 2 from the CO 2 adsorbent trap 62 and finally enters the reaction chamber 2 via the pipe.
In the above technical scheme, the CO 2 reduction reaction chamber 1 is externally provided with the radiation shielding layer 8, the shielding layer 8 is made of lead, and the radiation shielding layer 8 is used for shielding low-energy electrons and negative ion fragments and blocking or weakening the low-energy electrons and negative ion fragments emitted by the electron source.
In the above technical scheme, the CO 2 reduction reaction chamber 1 is further provided with a thermometer and an barometer, and a vacuum-pumping port 9 on the opposite side of the inlet ports of CO 2 and H 2 O, wherein the vacuum-pumping port 9 is used for vacuum pumping of CO 2 before entering the reaction chamber.
Meanwhile, the integrated system for purifying CO 2 and O 2 by low-energy electron radiation in the closed space is also provided with a negative ion detection system, and the negative ion detection system comprises:
the suction type gas sampler is connected with the reaction cavity;
The sensor is connected with the reaction cavity;
The data processing and control module is in communication connection with the suction gas sampler and the sensor, monitors the concentration of carbanion in the reaction cavity in real time through the sensor, feeds back and optimizes low-energy electronic setting parameters, and timely adjusts the CO 2 reduction reaction path to obtain a specific carbon-based fuel product, so that the selectivity of the specific carbon-containing fuel is improved. The reduction gas product in the reaction cavity is sampled by the suction gas sampler, and the reduction reaction product of CO 2 is analyzed and detected by on-line detection gas chromatography, liquid chromatography and other instruments. The inhalation type gas sampler, the sensor and the data processing and control module are all commercial products.
The integrated system for purifying CO 2 and O 2 by low-energy electron radiation in the closed space further comprises a product collection and detection system, and the integrated system comprises:
A product separation chamber 10 connected to the reaction chamber 2 through a pipe, the product separation chamber 10 being further provided with a product on-line detector;
A gas tank 11 connected to the product separation chamber 10;
a liquid storage tank 12 connected to the product separation chamber 10;
The low-energy electron adhesion reduction CO 2/H2 O generates various reduction products, and the reduction products are required to be separated, collected and reused, so that a product collection monitoring system consisting of a product separation chamber 10, a gas storage tank 11, a liquid storage tank 12 and a product online detector is designed (the gas storage tank 11, the liquid storage tank 12 and the product online detector are all commercial products). O 2 separated by the product separation chamber 10 is directly discharged to participate in the internal gas circulation in the chamber, and the rest gas products are transmitted to the gas storage tank 11 for storage, and the liquid carbon-based fuel is stored in the liquid storage tank 12. Wherein a molecular sieve for selectively adsorbing CO 2 in the product can be selected in the product separation chamber 10; or well-established membrane separation techniques in the art, including pressure-driven and osmotic-driven membranes. The on-line product detector monitors the component and concentration change of the CO 2 reduction product in real time, and if the component and concentration change is abnormal, early warning is carried out in time so as to avoid safety accidents.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (9)
1. The utility model provides a low energy electron radiation purification CO 2 and O 2 regeneration integration system in airtight space which characterized in that includes:
The CO 2 reduction reaction cabin is internally provided with a reaction cavity, an objective table for placing a catalyst is arranged in the reaction cavity, and the CO 2 reduction reaction cabin is provided with an electron gun interface;
The low-energy electron source is connected with the CO 2 reduction reaction cabin through an electron gun interface, and an electron beam extraction port of the low-energy electron source corresponds to the objective table;
The CO 2 enrichment device is connected with a circulating pump, and a CO 2 capture module and a heating module connected with the CO 2 capture module are arranged in the CO 2 enrichment device; the CO 2 enrichment device is connected with the CO 2 reduction reaction cabin through a pipeline;
And the water vapor generating device is connected with the CO 2 reduction reaction cabin through a pipeline.
2. The integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space according to claim 1, wherein the structure of the low-energy electron source comprises:
A gun body, wherein a cathode and an anode opposite to the cathode are arranged in the gun body;
a gate electrode disposed at a rear end of the anode;
A guide focusing module disposed at a rear end of the gate, the guide focusing module comprising:
The central axis of the guide tube is coincident with the central axes of the anode, the cathode and the grid electrode, and the guide tube is communicated with the electron beam extraction port;
A plurality of Helmholtz coils disposed outside the guide tube.
3. The integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space according to claim 2, wherein the cathode is one of a tantalum sheet, a tungsten wire and a lanthanum hexaboride electrode sheet.
4. The integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space according to claim 2, wherein a beam monitoring module is further disposed at an end of the low-energy electron source, the beam monitoring module is disposed between the guide tube and the electron beam extraction port, the beam monitoring module is a faraday cage, and comprises:
The first electrode plate is arranged close to the guide tube, the second electrode plate and the third electrode plate are sequentially arranged at the rear end of the first electrode plate, and the third electrode plate is integrally connected with the triangular cylinder.
5. The integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space according to claim 1, wherein the catalyst is a metal oxide medium catalytic material, including one of Cu 2O、SnO2、Co3O4、Bi2O3、In2O3 and ZnO, and the catalyst is configured as a mesh template on a stage.
6. The integrated system for purifying CO 2 and O 2 by low energy electron radiation in a confined space according to claim 1, wherein the CO 2 capturing module and the heating module are configured to: the heating module is an electric heating plate, and the CO 2 capturing module is a porous CO 2 adsorbent capturing net arranged on the electric heating plate.
7. The integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space according to claim 6, wherein the porous CO 2 adsorbent capturing net is made of one of biochar, silica gel, zircon sodium zeolite, metal organic frameworks MOFs and metal organic frameworks ZIF-C, AL 2O3、CeO2、La2O3.
8. The integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space according to claim 1, wherein a radiation shielding layer is arranged outside the CO 2 reduction reaction chamber.
9. The integrated system for purifying CO 2 and O 2 by low-energy electron radiation in a closed space according to claim 1, wherein the CO 2 reduction reaction chamber is further provided with a thermometer and a barometer, and a vacuum-pumping port on the opposite side of the CO 2 and H 2 O inlet ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410043126.0A CN117883932A (en) | 2024-01-11 | 2024-01-11 | Low-energy electron radiation CO purification in airtight space2O and O2Regeneration integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410043126.0A CN117883932A (en) | 2024-01-11 | 2024-01-11 | Low-energy electron radiation CO purification in airtight space2O and O2Regeneration integrated system |
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| CN117883932A true CN117883932A (en) | 2024-04-16 |
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|---|---|---|---|
| CN202410043126.0A Pending CN117883932A (en) | 2024-01-11 | 2024-01-11 | Low-energy electron radiation CO purification in airtight space2O and O2Regeneration integrated system |
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| Country | Link |
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| CN (1) | CN117883932A (en) |
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- 2024-01-11 CN CN202410043126.0A patent/CN117883932A/en active Pending
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