Water vapor electrolysis hydrogen production device based on microwave plasma reactor

Abstract

The invention discloses a water vapor electrolysis hydrogen production device based on a microwave plasma reactor. The water vapor electrolysis hydrogen production device comprises a reaction cavity, wherein one end of the reaction cavity is closed, and the other end of the reaction cavity is open; the quartz tube longitudinally penetrates through the closed end of the reaction cavity, and a gas inlet pipe and an igniter are arranged at a bottom opening of the quartz tube; the top opening is connected with a gas recovery device through a condenser pipe. The reaction cavity is used for efficiently reflecting and conducting microwaves, so that microwave energy is concentrated and uniformly distributed in the cavity, then the microwave energy is combined with point discharge of the igniter, water molecules are ionized, hydrogen, oxygen, a small amount of ozone and other possible by-product gases are generated, electrolysis of water vapor is achieved, and therefore hydrogen is efficiently generated. The novel microwave gas-liquid two-phase discharge plasma water electrolysis system is constructed, low electrode loss and low pollution emission are achieved, a novel efficient and environment-friendly way is provided for obtaining clean energy, and the microwave gas-liquid two-phase discharge plasma water electrolysis system has high practicability and wide applicability.

Description

Technical Field

[0001] The invention relates to a water vapor electrolysis hydrogen production device, in particular to a water vapor electrolysis hydrogen production device based on a microwave plasma reactor, and belongs to the technical field of new energy and energy conservation. Background Art

[0002] At present, the main methods of hydrogen production are traditional hydrogen production and plasma hydrogen production.

[0003] Traditional hydrogen production methods include steam methane reforming, water electrolysis and coal gasification. Although these methods are mature, they have problems such as low energy efficiency, high cost and environmental pollution. Microwave plasma hydrogen production uses microwave energy to generate plasma in a reactor. These high-energy plasmas can effectively crack raw material molecules and release hydrogen. Compared with traditional hydrogen production methods, this method has the advantages of high efficiency and clean production due to its single reactant and no need for fossil fuels.

[0004] Patent CN203534207U discloses "a fast cycle air-cooled vacuum furnace", in which the microwave plasma generator generates high-temperature plasma through microwave energy under vacuum conditions. The air cooling system is used to quickly cool the inside of the furnace cavity to maintain a stable temperature and vacuum environment. However, plasma reactions under high temperature conditions are difficult to control accurately, which can lead to uneven reactions or overheating, causing equipment wear and aging and even safety hazards. In addition, the process of generating plasma requires a lot of energy, resulting in low efficiency of the reaction from a macroscopic perspective.

[0005] How to improve the efficiency of hydrogen production and improve the stability of the reaction has become the most important issue at present. Summary of the invention

[0006] In order to solve the deficiencies of the prior art, the object of the present invention is to provide a water vapor electrolysis hydrogen production device based on a microwave plasma reactor.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: A water vapor electrolysis hydrogen production device based on a microwave plasma reactor comprises a reaction chamber with one end closed and the other end open and connected to a water load annular device through a three-pin dispenser; The quartz tube penetrates the closed end of the reaction chamber in the longitudinal direction. The bottom of the quartz tube is provided with an air inlet pipe and an igniter; The top of the quartz tube is connected to a gas recovery device through a condenser tube.

[0008] Water cooling chambers are respectively provided on the top and bottom surfaces of the closed end of the reaction chamber, and water cooling circuits are built in for cooling the quartz tube.

[0009] The outer dimensions of the water-loaded annulator are 182×161×59 mm, the outer dimensions of the three-pin distributor are 228×161×59 mm, and the diameter of the three-pin nut is 30 mm.

[0010] The external dimensions of the reaction chamber are 256×161×59 mm.

[0011] The diameter of the quartz tube is 28 mm and the height is 266.4 mm; the diameter of the air inlet pipe is 16 mm, and the size of the igniter is 33×33×63 mm.

[0012] There are two intake pipes, which are symmetrically placed on both sides of the igniter.

[0013] The outer dimensions of the water-cooling chamber are 88×103×42 mm, and the diameter of the water pipe of the water-cooling circuit is 10 mm.

[0014] The present invention is beneficial in that: The present invention discloses a hydrogen production device based on water vapor electrolysis of a microwave plasma reactor, which utilizes a reaction chamber to efficiently reflect and conduct microwaves, so that microwave energy is concentrated and evenly distributed in the chamber, and then utilizes microwave energy in combination with the tip discharge of an igniter to ionize water molecules to generate hydrogen, oxygen, a small amount of ozone and possible other by-product gases, thereby realizing the electrolysis of water vapor and efficiently generating hydrogen.

[0015] The water vapor electrolysis hydrogen production device of the present invention constructs a new microwave gas-liquid two-phase discharge plasma water electrolysis system, achieves low electrode loss and low pollution emissions, provides a new efficient and environmentally friendly way to obtain clean energy, and has strong practicality and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a steam electrolysis hydrogen production device.

[0017] Figure 2 Schematic diagram of the structure of the reaction chamber.

[0018] Figure 3 An exploded view of the structural schematic diagram of the reaction chamber.

[0019] The meanings of the marks in the accompanying drawings are as follows: 1. water-loaded circulator, 2. three-pin dispenser, 3. reaction chamber, 4. quartz tube, 5. air inlet pipe, 6. igniter, 7. condenser, 8. water-cooling chamber, 9. fixed protection tube. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] A water vapor electrolysis hydrogen production device based on a microwave plasma reactor is composed of a water load annulator 1, a three-pin dispenser 2, a reaction chamber 3 and a quartz tube 4.

[0022] One end of the reaction chamber 3 is closed, and the other end is open, and the open end is connected to the water load circulator 1 through a three-pin distributor 2.

[0023] Preferably, the external dimensions of the water-loaded annulator 1 are 182×161×59 mm, and the external dimensions of the reaction chamber 3 are 256×161×59 mm; the external dimensions of the three-pin mixer 2 are 228×161×59 mm, and the diameter of its three-pin nut is 30 mm; three three-pin nuts are arranged side by side.

[0024] At the closed end of the reaction chamber 3, the quartz tube 4 penetrates the reaction chamber 3 in the longitudinal direction. The top of the quartz tube 4 is connected to the downwardly inclined condenser tube 7 through the fixed protection tube 9; the bottom of the quartz tube 4 is connected to the air inlet pipe 5, and an igniter 6 is provided at the bottom. Preferably, there are two air inlet pipes 5, which are symmetrically placed on both sides of the igniter 6.

[0025] Preferably, the diameter of the quartz tube 4 is 28 mm and the height is 266.4 mm; the diameter of the air inlet pipe 5 is 16 mm, and the size of the igniter 6 is 33×33×63 mm; the outer diameter of the fixed protection tube 9 is 60 mm, the inner diameter is 32 mm, and the height is 60 mm; the diameter of the condenser tube 7 is 30 mm.

[0026] Independent water cooling chambers 8 are provided on the top and bottom surfaces of the closed end of the reaction chamber 3, respectively, with a water cooling circuit composed of water pipes built in, which is used to cool the quartz tube 4 from the top and bottom of the quartz tube 4 to reduce the reaction temperature inside it.

[0027] Preferably, the outer dimensions of the water cooling chamber 8 are 88×103×42 mm, and the diameter of the water pipe is 10 mm.

[0028] The end of the condenser pipe 7 is connected to a gas recovery device.

[0029] When using, First, clean water vapor is introduced from the air inlet pipe 5, passes through the reaction chamber 3 (4) from the quartz tube 4 and continues to be discharged upward, exhausting the air in the quartz tube 4, the fixed protection tube 9 and the condenser tube 7.

[0030] The microwave source generates microwaves and transmits them to the reaction chamber 3 through the waveguide composed of the water-loaded circulator 1 and the three-pin dispenser 2. The reaction chamber 3 is 256 mm long and the microwave frequency is 2450 MHz ± 25 MHz. Since the length of the reaction chamber 3 is an integral multiple of the microwave wavelength, the microwave energy is concentrated and evenly distributed in the chamber, and the microwave energy is efficiently reflected and conducted in the reaction chamber 3. Water vapor will not flow into the reaction chamber from the quartz tube.

[0031] The microwave source is a magnetron source with an output power of 2kW, a supply voltage of AC380V, a three-phase four-wire system, and adjustable power. The circulator is used to transmit the reflected power to the water load, and the water load then takes away the reflected power energy transmitted by the circulator, so that the reflected power will not flow back to the microwave source and burn it.

[0032] The three-pin mixer 2 is used to increase the microwave energy absorbed by the sample and make the microwave absorption rate higher by adjusting the standing wave of the entire system when the sample absorbs less microwaves.

[0033] Start the igniter 6. Under the action of the tip discharge, the gaseous water molecules absorb the microwave energy, and particle collision and excitation occur, generating ions and free electrons. After ionization, plasma is formed, and the plasma reacts with hydrogen and oxygen free radicals to generate hydrogen, oxygen, a small amount of ozone and possible other by-product gases, and the heat generated will continue to promote the generation of plasma. The product gas passes through the quartz tube 4 above to the condenser 7, and the residual water vapor in the gas is condensed and discharged.

[0034] The igniter 6 is preferably an electromagnet igniter 6, that is, the tungsten needle of the igniter 6 is located at the bottom of the reaction chamber 3, and after the current is passed, it can extend to the center of the reaction chamber 3, realize tip discharge in the reaction chamber 3, and guide microwave discharge. Controlling the position of the discharge tip can also realize instant control of the start and end of the reaction.

[0035] The water cooling chamber 8 continuously absorbs heat and cools the device to ensure normal operation of the device.

[0036] Preferably, a temperature sensor may be provided in the water cooling chamber 8 or the reaction chamber 3, and the water supply device adjusts the water flow rate in the water cooling circuit in real time through feedback from the temperature sensor, thereby achieving temperature regulation.

[0037] The symmetrical double air inlet pipes 5 can ensure that the gas can smoothly flow into the interior of the reaction chamber 3 .

[0038] At the same time, the dual air inlet pipes 5 can also be used to introduce water vapor and carrier gas, such as inert gas, respectively, to adjust the concentration and flow rate of water vapor, thereby controlling the process and progress of the reaction.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A water vapor electrolysis hydrogen production device based on a microwave plasma reactor, characterized in that: It includes a reaction chamber, one end of which is open and connected to a water load annular device through a three-pin dispenser, and the other end is closed; The quartz tube penetrates the closed end of the reaction chamber in the longitudinal direction. The bottom of the quartz tube is provided with an air inlet pipe and an igniter; The top of the quartz tube is connected to a gas recovery device through a condenser tube.

2. The steam electrolysis hydrogen production device according to claim 1, characterized in that: A water cooling chamber is provided on the top surface and the bottom surface of the closed end of the reaction chamber, respectively, and a water cooling circuit for cooling the quartz tube is built in.

3. The steam electrolysis hydrogen production device according to claim 1, characterized in that: The outer dimensions of the water-loaded annular device are 182×161×59 mm, the outer dimensions of the three-pin distributor are 228×161×59 mm, and the diameter of the three-pin nut is 30 mm.

4. The steam electrolysis hydrogen production device according to claim 1, characterized in that: The external dimensions of the reaction chamber are 256×161×59 mm.

5. The steam electrolysis hydrogen production device according to claim 1, characterized in that: The quartz tube has a diameter of 28 mm and a height of 266.4 mm; the diameter of the air inlet pipe is 16 mm, and the size of the igniter is 33×33×63 mm.

6. The steam electrolysis hydrogen production device according to claim 1, characterized in that: There are two air intake pipes, which are symmetrically arranged on both sides of the igniter.

7. The steam electrolysis hydrogen production device according to claim 1, characterized in that: The external dimensions of the water cooling chamber are 88×103×42 mm, and the diameter of the water pipe of the water cooling circuit is 10 mm.

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