CN114874804B - Renewable electric power driven multitube circulating water electrode plasma conversion device and method - Google Patents
Renewable electric power driven multitube circulating water electrode plasma conversion device and method Download PDFInfo
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- CN114874804B CN114874804B CN202210647000.5A CN202210647000A CN114874804B CN 114874804 B CN114874804 B CN 114874804B CN 202210647000 A CN202210647000 A CN 202210647000A CN 114874804 B CN114874804 B CN 114874804B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Abstract
The application discloses a renewable electric power driven multitube circulating water electrode plasma conversion device and a renewable electric power driven multitube circulating water electrode plasma conversion method, wherein the conversion device comprises a renewable energy power supply unit, a plasma conversion unit, a gas supply and liquid fuel collection unit and a signal control unit 4 part; the unbalanced state plasma generated in the multitube circulating water electrode structure can quickly convert high-flux greenhouse gas into high-value liquid chemicals at normal temperature and normal pressure; the semi-hollow high-voltage electrode simultaneously generates high voltage and is used as an air inlet pipeline, the circulating water solution is simultaneously used as a cooling medium and is grounded, the water temperature and the discharge intensity are adjustable, the semi-hollow high-voltage electrode is in seamless contact with the reaction cavity, the influence of air discharge is avoided, and the discharge is uniform and stable. The application has wide application range and can be used for expanding the liquid fuel preparation process which is mainly conducted by other plasma technologies; the method can provide driving force by utilizing clean electric energy, can utilize programming control, can improve automation level on the premise of ensuring high treatment efficiency and low reaction energy consumption, and is easy for industrial conversion.
Description
Technical Field
The application belongs to the technical field of greenhouse gas conversion, and particularly relates to a renewable electric power driven multitube circulating water electrode plasma conversion device and method.
Background
Currently, efficient use of low-carbon, renewable energy has become a key issue for energy development. However, the stable configuration of carbon-based small molecules (c= O, C-H) results in limited activation at normal temperature and pressure, low conversion, and conventional thermocatalytic CO 2 、CH 4 The conversion technology is faced with the difficult problem of high energy consumption caused by high temperature and high pressure. Reina et al (Journal of CO) 2 Utilization,2018, 25, 68-78) found that when CO 2 /CH 4 Ni/CeO at reforming temperature higher than 600 DEG C 2 The catalyst shows a certain reaction activity, and obvious filiform carbon deposit is generated on the surface of the catalyst when the temperature is further increased, so that the catalytic activity is reduced.
Despite the positive results of renewable energy consumption, distributed energy storage and utilization, however, there is currently no directly electrically driven CO 2 、CH 4 And (3) a small molecule front conversion technology. The low-temperature plasma can directly utilize electric energy, can realize particle behavior regulation and control on a mesoscale, reduces a reaction energy barrier and accelerates a reaction rate, and is a front carbon negative technology capable of realizing rapid conversion of C1 micromolecules under mild conditions. According to thermodynamic equilibrium, low temperature favors CO 2 And CH (CH) 4 Co-conversion to produce high value liquid fuels (e.g. CH 3 OH) and high temperature to facilitate the equilibrium of the gas products (e.g. CO, H 2 ) And (5) moving the product. Therefore, the corresponding relation among the discharge type, the reaction temperature and the filling catalyst is balanced to realize the efficient preparation of the liquid fuel by the plasma catalysis of the C1 molecules, wherein the innovative design of the reactor is a key to realize the efficient preparation of the liquid fuel.
Chinese patent No. CN201910218257.7 discloses a device and a method for catalytic reforming of greenhouse gases by microwave discharge plasma, wherein the discharge mode is selected as microwave plasma, the conversion rate of the catalytic reforming reaction of plasma can be calculated according to the gas concentration detected by a sensor, the reaction temperature in the catalytic reforming reactor can be changed by temperature control, and further the regulation of the conversion rate is realized, so that the catalytic reforming process of carbon dioxide and methane is more thorough. The application solves the problem of monitoring the conversion rate of carbon dioxide and methane in real time in the plasma conversion, however,because of adopting the microwave discharge mode, the reactor has higher temperature and high energy consumption, and the products are still CO and H 2 It is difficult to produce liquid fuel and additional water cooling measures are required to prevent overheating of the reaction zone.
Chinese patent No. CN201510428436.5 discloses a reactor and method for preparing synthetic gas by reforming greenhouse gas, wherein the discharge mode is corona discharge, multi-tube plasma moment and filling type surface discharge are combined, CH4/CO2 mixed gas is first plasma excited and decomposed by the plasma moment, and then the synthetic gas is obtained by plasma catalytic reaction, the functions of the two are mutually cooperated to promote, and reforming synthesis effect is improved; although the application improves the reaction yield to a certain extent and solves the problem of blocking the catalyst by carbon deposition, the reaction heat is difficult to remove, and the products are CO and H 2 Synthesis gas.
To sum up, traditional thermocatalytic CO 2 、CH 4 The conversion often requires high temperature and high pressure and is matched with a proper catalyst to realize the large-scale utilization of the carbon-based micromolecules, and the plasma technology provides a sustainable and energy-saving application scheme for the rapid conversion of greenhouse gases under mild conditions. However, limited by the type of discharge and the drawbacks of the reactor structure, current plasma technology is still focused on synthesis gas (CO, H 2 ) An automated device and an implementation method for efficiently converting high-value liquid fuel and fully utilizing renewable energy sources for power supply are not known.
Disclosure of Invention
In order to solve the technical problems, the application provides a renewable electric power driven multitube circulating water electrode plasma conversion device and a renewable electric power driven multitube circulating water electrode plasma conversion method, which can provide driving force by using clean electric energy and improve treatment flux by adopting multitube reactors; meanwhile, the circulating water solution is used as a cooling medium and grounded, the water temperature and the discharge intensity are adjustable, and the circulating water solution is in seamless contact with the reaction cavity, so that the influence of air discharge is avoided, and plasmas can be generated at normal temperature and normal pressure to quickly drive CO 2 、CH 4 Conversion to CH 3 OH、CH 3 COOH and other high value liquid chemicals and promotes automation level.
In order to achieve the above purpose, the application adopts the following technical scheme:
a renewable power driven multitube circulating water electrode plasma conversion device comprises a renewable energy power supply unit, a plasma conversion unit, a gas supply and liquid fuel collection unit and a signal control unit;
the renewable energy source power supply unit comprises a solar panel, a solar controller, an energy storage device and an inverter; the solar panel is connected with the energy storage device through the solar controller, and stored electric energy is boosted through the inverter and then output;
the plasma conversion unit comprises a plasma excitation source, a high-voltage input line, an outer cavity of the reactor, an insulating medium, a semi-hollow metal electrode, a fixed gasket, a water inlet, a water outlet, a circulating water machine, an infrared temperature detector and a circulating water pipeline; the semi-hollow metal electrode penetrates through the fixed gasket, is embedded in an insulating medium and then forms a plasma reactor with the outer cavity of the reactor; the plasma excitation source is connected with the semi-hollow metal electrode through a high-voltage input line to serve as an anode; the circulating water machine is connected with the water inlet and the water outlet through a circulating water pipeline, and the water inlet and the water outlet are respectively grounded; the infrared temperature detector is used for in-situ measurement of the reaction temperature change; the semi-hollow metal electrode, the fixed gasket, the insulating medium, the outer cavity of the reactor and the circulating water form a multi-pipe circulating water electrode;
the air supply and fuel collection unit comprises a one-way valve, an electromagnetic valve, an air inlet tank, a stainless steel pipeline, an insulating pipeline, a gas-liquid separator, a condensation tank, a gas collection utilization device and a liquid collection utilization device; the one-way valve, the electromagnetic valve and the air inlet tank are connected through a stainless steel pipeline, and air is introduced into the insulating pipeline and enters the plasma reactor to form an air supply system; the gas-liquid separator is arranged in the condensing tank and is further connected with the gas collecting and utilizing device and the liquid collecting and utilizing device to form a fuel collecting system;
the signal control unit comprises a singlechip, a display screen, an alarm and a signal transmission line, wherein the singlechip is in communication connection with the display screen, the alarm, a solar controller, an inverter, a gas-liquid separator, a circulating water machine, an electromagnetic valve and an air inlet tank through the signal transmission line.
Further, the solar energy controller adapts current to 10-60A, and simultaneously transmits signals of the renewable energy source power supply unit to the singlechip.
Further, the plasma excitation source is used for exciting the inside of the multi-tube array type water electrode to generate atmospheric pressure discharge plasma, and is one of a high-frequency alternating current source, a direct current source, a pulse source, a radio frequency source and a microwave source.
Further, the outer cavity of the reactor is a closed cylindrical cavity formed by high-insulation materials, and the high-insulation materials are quartz materials.
Further, the insulating medium is an opening cylindrical cavity formed by high insulating materials and is used for separating circulating water in the cavity of the plasma reactor from the semi-hollow metal electrode, and the high insulating materials are made of quartz; the plurality of open cylindrical cavities form an array or penetrate through the outer cavity of the reactor in a honeycomb shape, the interval between the open cylindrical cavities is not less than 3cm, and the open cylindrical cavities and the outer cavity of the reactor are sealed by emulsion or integrally formed; the inside is filled with a Ni-based catalyst.
Further, the semi-hollow metal electrode is used as a high-voltage input end and an air inlet end, the upper half section is hollow, and conductive metal materials including aluminum, iron, tungsten, copper and stainless steel are selected and installed in an insulating medium.
Furthermore, the fixed gasket is hollow, the edge of the fixed gasket is provided with a notch, the fixed gasket is nested outside the semi-hollow metal electrode, the semi-hollow metal electrode and an insulating medium are ensured to be coaxial, and meanwhile, gas and generated liquid can be ensured to be discharged, and the fixed gasket is made of polytetrafluoroethylene.
Further, the water inlet and the water outlet form a circulating water loop with the circulating water unit, and the circulating water unit enters from the lower part and exits from the upper part; the circulating water is tap water, and a certain amount of NaCl or KCl is added to change the discharge intensity, and the concentration range is 0.5-1.5 mol/L.
Further, the air inlet tank is used for raw material supply, and for CO 2 Is converted into CO 2 +H 2 、CO 2 +CH 4 、CO 2 +H 2 One or a combination of several of O, the concentration of which is measured by an embedded concentration sensor, and the carrier gas is Ar.
The application also provides a renewable electric power driven multitube circulating water electrode plasma conversion method, which comprises the following steps:
step (1), after the solar panel converts light energy into electric energy, charging the energy storage device through the solar controller, and transmitting charging information of the energy storage device to the singlechip in real time through the solar controller;
step (2), after the raw materials in the air inlet tank are mixed, concentration information of the raw materials is transmitted to a singlechip through a sensor, and after preset conditions are met, the singlechip sends out a signal to open an electromagnetic valve and an infrared temperature detector, and the raw materials enter a plasma conversion unit;
step (3), after the concentration of the raw material is measured by a sensor of the gas-liquid separator, a signal of the raw material is transmitted to the singlechip, the singlechip sends out a signal to the inverter, the inverter boosts the voltage of the energy storage device and then acts on the plasma excitation source, discharge plasma is generated in the plasma reactor, and meanwhile, the singlechip sends out a signal to open the circulating water machine;
step (4), the raw materials are converted by a plasma reactor and then enter a gas-liquid separator, and after the concentration is measured by a sensor, signals of the raw materials are transmitted to a singlechip;
step (5), the conversion rate of raw materials and the selectivity of liquid chemicals are measured in real time after the calculation of a singlechip, and the conversion device enters a working stability period;
step (6), when the electric quantity of the energy storage device is insufficient, the plasma excitation source stops discharging, the conversion rate obtained by calculation of the singlechip is suddenly reduced, and further signals are sent to control the inverter to be closed, the circulating water machine to be closed, the electromagnetic valve to be closed, air inlet to be stopped, and the alarm to give an alarm;
and (7) the single chip microcomputer reads the information of the controller at any time, when the electric quantity of the energy storage device reaches a preset condition, the single chip microcomputer re-controls the inverter to be turned on, the plasma excitation source starts to discharge, the circulating water machine starts to work, the electromagnetic valve is turned on, the alarm is turned off, and the steps (5) - (7) are circulated, so that all-weather unattended operation is realized.
The application has the technical advantages that:
(1) The device can fully utilize renewable energy sources to drive the discharge plasma technology, greatly reduce reaction energy consumption and improve the conversion efficiency of greenhouse gases;
(2) The application takes the circulating water medium as the discharge conversion area for cooling and simultaneously as the ground electrode for promoting CO 2 The reaction balance of the conversion moves towards the high-value liquid fuel direction, and the CH is mainly promoted 3 OH、CH 3 Liquid selectivity such as COOH;
(3) The application utilizes the singlechip to perform data processing, signal transmission and equipment control, thereby realizing automatic control of the device;
(4) The application has the advantages of simple structure, high automation degree, capability of fully utilizing renewable energy sources, controllable discharge intensity, large treatment flux, high liquid fuel selectivity and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a front view of the entire structure of a renewable power driven multi-cycle water electrode plasma conversion device in an embodiment of the present application;
FIG. 2 is a top view and an oblique view of the combined structure of the outer chamber of the reactor, the insulating medium and the semi-hollow metal electrode of the present application;
FIG. 3 is a top view and an oblique view of a semi-hollow metal electrode of the present application;
FIG. 4 is a top view and an oblique view of the securement washer of the present application;
FIG. 5 is a photograph showing the operation of the plasma converting apparatus of the present application;
FIG. 6 shows the conversion of CO by the renewable power driven multi-tube circulating water plasma conversion device of the present application 2 /CH 4 A selective distribution of gaseous products, liquid fuel is produced.
Reference numerals shown in the drawings are as follows:
the solar energy battery plate 1, the solar energy controller 2, the energy storage device 3, the inverter 4, the plasma excitation source 5, the reactor outer cavity 6, the insulating medium 7, the semi-hollow metal electrode 8, the fixed gasket 9, the water inlet 10, the water outlet 11, the gas-liquid separator 12, the condensation tank 13, the gas collecting and utilizing device 14, the liquid collecting and utilizing device 15, the singlechip 16, the circulating water machine 17, the one-way valve 18, the electromagnetic valve 19, the air inlet tank 20, the display screen 21, the alarm 22, the infrared temperature detector 23, the stainless steel pipeline 24, the insulating pipeline 25, the high-voltage input line 26, the signal transmission line 27 and the circulating water pipeline 28.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. In addition, the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
In an exemplary embodiment of the present application, as shown in fig. 1, the renewable power-driven multi-tube circulating water plasma conversion apparatus of the present application comprises 4 units in total, including a renewable energy power supply unit, a plasma conversion unit, a gas supply and liquid fuel collection unit, and a signal control unit.
The solar panel 1, the solar controller 2, the energy storage device 3 and the inverter 4 form a renewable energy source power supply unit. The solar panel 1 is connected with the energy storage device 3 through the solar controller 2, and the stored electric energy is boosted through the inverter 4 and then output to the plasma excitation source 5, the infrared temperature detector 23 and the circulating water machine 17.
The plasma excitation source 5, the high-voltage input line 26, the reactor outer cavity 6, the insulating medium 7, the semi-hollow metal electrode 8, the fixed gasket 9, the water inlet 10, the water outlet 11, the circulating water machine 17, the infrared temperature detector 23 and the circulating water pipeline 28 form a plasma conversion unit. The semi-hollow metal electrode 8 passes through the fixed gasket 9, is embedded in the insulating medium 7, and then forms a plasma reactor with the reactor outer cavity 6; the plasma excitation source 5 is connected with the semi-hollow metal electrode 8 through a high-voltage input line 26 to serve as an anode; the circulating water machine 17 is connected with the water inlet 10 and the water outlet 11 through a circulating water pipeline 28, and the water inlet 10 and the water outlet 11 are respectively grounded; the infrared thermometer 23 is used to measure the reaction temperature change in situ. The reaction raw material enters an insulating medium 7 through a semi-hollow metal electrode 8, and after being converted by discharge plasma, the product enters a gas-liquid separator 12. When the semi-hollow metal electrode 8 is used as a high-voltage electrode, circulating water in the outer cavity 6 of the reactor is used as a ground electrode to form a discharge loop, so that uniform discharge plasma is formed in the insulating medium 7, and raw material conversion is completed. The semi-hollow metal electrode 8, the fixed gasket 9, the insulating medium 7, the outer cavity 6 of the reactor and circulating water in the cavity form a multitube circulating water electrode.
The check valve 18, the electromagnetic valve 19, the air inlet tank 20, the stainless steel pipeline 24, the insulating pipeline 25, the gas-liquid separator 12, the condensation tank 13, the gas collecting and utilizing device 14 and the liquid collecting and utilizing device 15 form an air supply and liquid fuel collecting unit. The one-way valve 18, the electromagnetic valve 19 and the air inlet tank 20 are connected through a stainless steel pipeline 24, and air is introduced into an insulating pipeline 25 to enter the plasma reactor to form an air supply system; the gas-liquid separator 12 is arranged in the condensation tank 13 and is further connected with a gas collecting and utilizing device 14 and a liquid collecting and utilizing device 15 to form a fuel collecting system.
The singlechip 16, the display screen 21, the alarm 22 and the signal transmission line 27 form a signal control unit. The singlechip 16 is in communication connection with the display screen 21, the alarm 22, the solar controller 2, the inverter 4, the gas-liquid separator 12, the circulating water machine 17, the electromagnetic valve 19 and the air inlet tank 20 through the signal transmission line 27.
The solar panel 1 is used for converting solar energy into direct current, and the output voltage is 18V and the power is 600W.
The solar controller 2 is adapted to current 60A, and can transmit signals of a power supply system to the singlechip 16.
The energy storage device 3 is used for storing the electric energy converted by the solar panel 1, and the input voltage and the output voltage of the battery are set to be 12V, and the capacity is 200Ah.
The inverter 4 is used for inverting the direct current output by the energy storage device 3 into 220V alternating current with power of 3500W, and is connected with the singlechip 16 through a signal wire to control the on/off of the output.
The plasma excitation source 5 is used for exciting atmospheric pressure discharge plasma generated inside the array type multitube circulation water electrode, the power supply is selected as a nanosecond pulse source, the output voltage is 13kV, the rising edge is 200ns, the falling edge is 200ns, the frequency is 4-7 kHz, and the pulse width is 2000-8000 ns. The plasma excitation source 5 may be one of a high-frequency alternating current source, a direct current source, a radio frequency source, and a microwave source.
The reactor outer chamber 6 is a closed cylindrical chamber composed of a highly insulating material, preferably quartz.
As shown in fig. 2, the insulating medium 7 is an open cylindrical cavity formed by high insulating material, and is used for separating the circulating water medium in the reaction cavity 6 from the semi-hollow metal electrode 8, and the high insulating material is preferably quartz; the multiple open cylindrical cavities form an array or honeycomb shape penetrating the outer cavity 6 of the reactor, the distance is not less than 3cm, the space between the open cylindrical cavities and the outer cavity 6 of the reactor is sealed by silicon rubber or latex, and Ni/Al is filled in the open cylindrical cavities 2 O 3 /CeO 2 Structured catalysts.
As shown in fig. 3, the semi-hollow metal electrode 8 is used as a high voltage input end and an air inlet end, and the upper half section is hollow, and is made of conductive metal materials such as aluminum, iron, tungsten, copper, stainless steel and the like, preferably stainless steel, and is arranged in the insulating medium 7.
As shown in fig. 4, the fixing washer 9 is hollow, has a notch at the edge, is nested outside the semi-hollow metal electrode 8, ensures that the semi-hollow metal electrode 8 and the insulating medium 7 are coaxial, and ensures that gas and generated liquid pass through, and is preferably made of polytetrafluoroethylene.
The water inlet 10 and the water outlet 11 form a circulating water loop with the circulating water machine 17, the circulating water can be selected from water, a certain amount of NaCl, KCl and the like can be added to change the discharge intensity, the concentration range is 0.5-1.5 mol/L, and preferably, 1mol/L KCl solution is added.
The singlechip 16, preferably STC89C52 series, establishes communication connection with each component through a signal transmission line 27.
The air inlet tank 20 is used for raw material supply and CO 2 Is preferably CO 2 +H 2 、CO 2 +CH 4 、CO 2 +H 2 One or a combination of a plurality of O, wherein the concentration of the O is measured by an embedded concentration sensor, and the carrier gas is Ar; in this example, CO2: CH4: ar=1:1:1, total flow rate 200ml/min.
The stainless steel pipeline 24 is provided with a mass flowmeter for controlling the flow rate.
The materials of the insulating pipeline 25 and the circulating water pipeline 28 are preferably polyurethane, and the insulating pipeline is used for gas supply or liquid circulation.
The high-voltage input line 26 has a withstand voltage of 25kV.
The signal transmission line 27 is a coaxial transmission line.
As shown in FIG. 5, the actual working photograph of the plasma converting apparatus of the present application, CH, is obtained by performing conversion experiments with the current parameters 4 、CO 2 The conversion rate easily breaks through 30%, the CO selectivity can be controlled below 30%, H 2 The selectivity is as high as 35%, and the total hydrocarbon (C x H y ) The content is controlled below 25%. In particular, through chromatographic detection, the main components of the liquid fuel are methanol, ethanol and acetic acid, as shown in fig. 6, the total selectivity is up to 46%, and the application proves that the application can obviously improve the yield of the liquid fuel, simultaneously, the renewable electric power is used for driving the plasma discharge, and the reaction energy consumption can also be greatly reduced, so that the technical advantage is obvious.
The application also provides a renewable electric power driven multitube circulating water electrode plasma conversion method, which comprises the following steps:
step (1), after the solar panel 1 converts light energy into electric energy, the energy storage device 3 is charged through the solar controller 2, and charging information is transmitted to the singlechip 16 in real time by the solar controller 2;
step (2), after the raw materials of the air inlet tank 20 are mixed, concentration information of the raw materials is transmitted to the singlechip 16 through a sensor, and after preset conditions are met, the singlechip 16 sends out a signal to open the electromagnetic valve 19 and the infrared thermometer 23, and the raw materials enter a plasma conversion unit;
step (3), after the concentration of the raw material is measured by a sensor in the gas-liquid separator 12, a signal of the raw material is transmitted to the singlechip 16, the singlechip 16 sends a signal to the inverter 4, the inverter 4 boosts the voltage of the energy storage device 3 and acts on the plasma excitation source 5 to generate discharge plasma in the plasma reactor, and meanwhile, the singlechip 16 sends a signal to open the circulating water machine 17;
step (4), the raw materials are converted by a plasma reactor and then enter a gas-liquid separator 12, and after the concentration is measured by a sensor, signals of the raw materials are transmitted to a singlechip 16;
step (5), the conversion rate of raw materials and the selectivity of liquid chemicals are measured in real time after calculation by the singlechip 16, and the conversion device enters a working stability period;
step (6), when the electric quantity of the energy storage device 3 is insufficient, the plasma excitation source 5 stops discharging, the conversion rate calculated by the singlechip 16 is suddenly reduced, and further signals are sent to control the inverter 4 to be closed, the circulating water machine 17 to be closed, the electromagnetic valve 19 to be closed, air inlet to be stopped and the alarm 22 to give an alarm;
and (7) the information of the solar controller 2 is read by the singlechip 16 at any time, when the electric quantity of the energy storage device 3 reaches a preset condition, the inverter 4 is controlled to be turned on again by the singlechip 16, the plasma excitation source 5 begins to discharge, the circulating water machine 17 begins to work, the electromagnetic valve 19 is turned on, the alarm 22 is turned off, and the steps (5) - (7) are circulated, so that all-weather unattended operation is realized.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the application and is not intended to limit the application, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (7)
1. A renewable electric power driven multitube circulation water electrode plasma conversion device is characterized in that: the device comprises a renewable energy power supply unit, a plasma conversion unit, a gas supply and liquid fuel collection unit and a signal control unit;
the renewable energy source power supply unit comprises a solar panel, a solar controller, an energy storage device and an inverter; the solar panel is connected with the energy storage device through the solar controller, and stored electric energy is boosted through the inverter and then output;
the plasma conversion unit comprises a plasma excitation source, a high-voltage input line, an outer cavity of the reactor, an insulating medium, a semi-hollow metal electrode, a fixed gasket, a water inlet, a water outlet, a circulating water machine, an infrared temperature detector and a circulating water pipeline; the semi-hollow metal electrode penetrates through the fixed gasket, is embedded in an insulating medium and then forms a plasma reactor with the outer cavity of the reactor; the plasma excitation source is connected with the semi-hollow metal electrode through a high-voltage input line to serve as an anode; the circulating water machine is connected with the water inlet and the water outlet through a circulating water pipeline, and the water inlet and the water outlet are respectively grounded; the infrared temperature detector is used for in-situ measurement of the reaction temperature change; the semi-hollow metal electrode, the fixed gasket, the insulating medium, the outer cavity of the reactor and the circulating water in the cavity form a multi-pipe circulating water electrode;
the air supply and fuel collection unit comprises a one-way valve, an electromagnetic valve, an air inlet tank, a stainless steel pipeline, an insulating pipeline, a gas-liquid separator, a condensation tank, a gas collection utilization device and a liquid collection utilization device; the one-way valve, the electromagnetic valve and the air inlet tank are connected through a stainless steel pipeline, and air is introduced into the insulating pipeline and enters the plasma reactor to form an air supply system; the gas-liquid separator is arranged in the condensing tank and is further connected with the gas collecting and utilizing device and the liquid collecting and utilizing device to form a fuel collecting system;
the signal control unit comprises a singlechip, a display screen, an alarm and a signal transmission line, wherein the singlechip is in communication connection with the display screen, the alarm, a solar controller, an inverter, a gas-liquid separator, a circulating water machine, an electromagnetic valve and an air inlet tank through the signal transmission line;
the air inlet tank is used for supplying raw materials, and for CO 2 Is converted into CO 2 +H 2 、CO 2 +CH 4 、CO 2 +H 2 O or a combination of a plurality of O, the concentration of which is concentrated by embeddedThe degree sensor detects that the carrier gas is Ar;
the insulating medium is an open cylindrical cavity formed by high insulating materials and is used for separating circulating water in the cavity of the plasma reactor from the semi-hollow metal electrode, and the high insulating materials are made of quartz; the plurality of open cylindrical cavities form an array or penetrate through the outer cavity of the reactor in a honeycomb shape, the interval between the open cylindrical cavities is not less than 3cm, and the open cylindrical cavities and the outer cavity of the reactor are sealed by emulsion or integrally formed; the inside is filled with Ni-based catalyst;
the water inlet and the water outlet form a circulating water loop with the circulating water unit, and the circulating water unit enters from the lower part and goes out from the upper part; the circulating water selects tap water, and a certain amount of NaCl or KCl is added to change the discharge intensity, and the concentration range is 0.5-1.5 mol/L;
the conversion rate of the raw materials and the selectivity of the liquid chemicals are measured in real time after the calculation of the singlechip, and the conversion device enters a working stability period;
when the electric quantity of the energy storage device is insufficient, the plasma excitation source stops discharging, the conversion rate obtained by calculation of the single chip microcomputer is suddenly reduced, and further signals are sent to control the inverter to be closed, the circulating water machine to be closed, the electromagnetic valve to be closed, air inlet to be stopped and the alarm to give an alarm;
the single chip microcomputer reads the information of the controller at any time, when the electric quantity of the energy storage device reaches a preset condition, the single chip microcomputer re-controls and turns on the inverter, the plasma excitation source begins to discharge, the circulating water machine begins to work, the electromagnetic valve is turned on, the alarm is turned off, the circulating conversion is realized, and all-weather unmanned on duty is realized.
2. The renewable power driven multi-cycle water electrode plasma conversion device of claim 1, wherein: the solar energy controller is adaptive to the current of 10-60A, and simultaneously transmits signals of the renewable energy source power supply unit to the singlechip.
3. The renewable power driven multi-cycle water electrode plasma conversion device of claim 1, wherein: the plasma excitation source is used for exciting the inside of the multi-tube circulating water electrode to generate atmospheric pressure discharge plasma, and is one of a high-frequency alternating current source, a direct current source, a pulse source, a radio frequency source and a microwave source.
4. The renewable power driven multi-cycle water electrode plasma conversion device of claim 1, wherein: the reactor outer cavity is a closed cylindrical cavity formed by high-insulation materials, and the high-insulation materials are quartz materials.
5. The renewable power driven multi-cycle water electrode plasma conversion device of claim 1, wherein: the semi-hollow metal electrode is used as a high-voltage input end and an air inlet end, the upper half section is hollow, and conductive metal materials including aluminum, iron, tungsten, copper and stainless steel are selected and arranged in the insulating medium.
6. The renewable power driven multi-cycle water electrode plasma conversion device of claim 1, wherein: the fixing washer is hollow, has notch at the edge and is embedded in the outer side of the semi-hollow metal electrode to ensure the coaxial between the semi-hollow metal electrode and the insulating medium and the discharge of gas and produced liquid, and is made of PTFE.
7. A conversion method of a renewable electrically driven multi-cycle water electrode plasma conversion apparatus according to one of claims 1 to 6, comprising the steps of:
step (1), after the solar panel converts light energy into electric energy, charging the energy storage device through the solar controller, and transmitting charging information of the energy storage device to the singlechip in real time through the solar controller;
step (2), after the raw materials in the air inlet tank are mixed, concentration information of the raw materials is transmitted to a singlechip through a sensor, and after preset conditions are met, the singlechip sends out a signal to open an electromagnetic valve and an infrared temperature detector, and the raw materials enter a plasma conversion unit;
step (3), after the concentration of the raw material is measured by a sensor of the gas-liquid separator, a signal of the raw material is transmitted to the singlechip, the singlechip sends out a signal to the inverter, the inverter boosts the voltage of the energy storage device and then acts on the plasma excitation source, discharge plasma is generated in the plasma reactor, and meanwhile, the singlechip sends out a signal to open the circulating water machine;
step (4), the raw materials are converted by a plasma reactor and then enter a gas-liquid separator, and after the concentration is measured by a sensor, signals of the raw materials are transmitted to a singlechip;
step (5), the conversion rate of raw materials and the selectivity of liquid chemicals are measured in real time after the calculation of a singlechip, and the conversion device enters a working stability period;
step (6), when the electric quantity of the energy storage device is insufficient, the plasma excitation source stops discharging, the conversion rate obtained by calculation of the singlechip is suddenly reduced, and further signals are sent to control the inverter to be closed, the circulating water machine to be closed, the electromagnetic valve to be closed, air inlet to be stopped, and the alarm to give an alarm;
and (7) the single chip microcomputer reads the information of the controller at any time, when the electric quantity of the energy storage device reaches a preset condition, the single chip microcomputer re-controls the inverter to be turned on, the plasma excitation source starts to discharge, the circulating water machine starts to work, the electromagnetic valve is turned on, the alarm is turned off, and the steps (5) - (7) are circulated, so that all-weather unattended operation is realized.
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