Low-cost, high-efficiency and numerical-control replaceable magnesium alloy barrel and hydrolysis hydrogen production device

Abstract

According to the low-cost and high-efficiency hydrogen production device capable of replacing the magnesium alloy barrel and producing hydrogen through hydrolysis, Mg metal and H2O are used for producing hydrogen through hydrolysis. The device comprises a reactor 1, a numerical control replaceable Mg alloy barrel 2, a numerical control box 3, a replaceable residue collecting bin 4, an ultrasonic generator 5, a temperature, pressure, liquid level and concentration instrument 6, a water floating lattice 7, a water feeding pump / valve 8, a water storage and cooling box 9, a hydrogen storage tank 10, a water level / temperature level instrument 11 of the water storage and cooling box and an emergency water drain valve A. The numerical control replaceable Mg alloy barrel 2 is composed of a barrel body head a, a numerical control motor b / c, a feeding disc / rod d, a rotating rod and a tool bit e, an Mg alloy rod f, an outer sealing cover j, a barrel body h and the like. The use of the numerical control replaceable Mg alloy barrel and the replaceable residue bin ensures that the hydrolysis reaction of the Mg alloy rod and H2O is safe, continuous and thorough.

Description

[0001] A low-cost, high-efficiency, digitally controlled replaceable magnesium alloy barrel + hydrolysis hydrogen production device. The invention relates to the technical field of magnesium metal hydrogen production. Existing technology:

[0002] In recent years, hydrogen production by hydrolysis, as a more practical and safe hydrogen production technology, has received great attention due to its advantages such as wide source of raw materials, large hydrogen production, high hydrogen purity and no harm to the environment. It has gradually become one of the hot topics that scholars from all over the world are competing to study.

[0003] From an economic point of view, magnesium is abundant in reserves, cheap, and has mature industrial production technology, making it suitable for large-scale production and use, making it a type of hydrogen storage material with important practical value and application prospects. However, the hydrolysis product of magnesium, Mg(OH)2, is poorly soluble in water, and the MgO / Mg(OH)2 layer formed at the beginning of the hydrolysis reaction will cover the surface of the reactants and easily cover the unreacted Mg surface, thereby seriously destroying the continuity of the hydrolysis reaction, resulting in low hydrolysis reaction rate and conversion rate.

[0004] In order to solve the problem of the oxide layer on the surface of Mg metal and the Mg(OH)2 covering blocking the reaction between H2O and Mg metal, scholars from various countries have proposed a variety of methods.

[0005] Such as the following method:

[0006] 1. The process of producing hydrogen by hydrolysis of NaBH4 is relatively mature and has achieved rapid supply of hydrogen for fuel cells. However, the high cost of NaBH4, the easy failure of the catalyst, and the low recovery rate of NaBo2 produced by hydrolysis have greatly limited the commercial application of NaBH4.

[0007] 2. In order to enhance the efficiency of H2O dissolving Mg to produce hydrogen, chloride salts such as magnesium chloride, sodium chloride, manganese chloride, nickel chloride, aluminum chloride and other salt solutions are added to the Mg+H2O reaction.

[0008] 3. Ball milling and doping of Mg metal particles: ball milling and doping of Mg metal particles + Ni / Fe, Ce and other powders to enhance the reaction between Mg metal and H2O.

[0009] 4. Use MgH2, NaH and other materials to react with H2O to produce hydrogen (H2) and a large amount of water decomposition heat.

[0010] References: CN102491265A CN109879250A CN202010636699.6

[0011] Journal: Light Metals February 2002-October 2021

[0012] However, the above technologies have many drawbacks:

[0013] 1. Hydrogenation materials such as NaBH4 / MgH2 / NaH have complex production processes, high prices, and difficult to control hydrolysis heat energy.

[0014] 2. Adding various chloride salts to the Mg+H2O reaction can enhance the dissolution of Mg metal, but its effect on increasing H2 production is limited.

[0015] 3. The ball milling activation technology of Mg metal particles + catalyst requires very fine Mg metal particles and has high costs. The application of the ball milling method of Mg metal particles + catalyst is greatly limited.

[0016] The purpose of this case is to provide a low-cost, high-efficiency, CNC replaceable magnesium alloy barrel + hydrolysis hydrogen production device. During the hydrolysis of Mg metal + H2O, the surface oxide layer and Mg(OH)2 coverage are continuously destroyed, the hydrogen yield is increased, the use cost is reduced, and the safety of hydrogen use is improved.

[0017] The technical implementation method of this case:

[0018] Reference Figure 1 --Device structure diagram

[0019] Figure 2 - Schematic diagram of the cross section of the CNC replaceable Mg alloy barrel

[0020] The present invention describes the structure and working principle of a low-cost, high-efficiency, replaceable magnesium alloy barrel + hydrolysis hydrogen production device provided in this case.

[0021] Its structure is as follows:

[0022] Figure 1 It consists of 1-reactor, 2-CNC replaceable Mg alloy barrel, 3-CNC box, 4-replaceable residue collection bin, 5-ultrasonic generator, 6-temperature, pressure, liquid level and concentration meter, 7-water float, 8-water pump / valve, 9-water storage and cooling box, 10-hydrogen storage tank, 11-water storage and cooling box water level / temperature meter, 12-hydrogen outlet pipe / valve, A-emergency drain valve, etc.

[0023] Figure 2 2-CNC replaceable Mg alloy barrel is composed of a-barrel head, b / c-CNC motor, d-feeding tray / rod, e-rotating rod and cutter head, f-Mg alloy rod, j-outer sealing cover, h-barrel body, etc.

[0024] A plurality of 2-CNC replaceable Mg alloy barrels can be installed on the 1-reactor, and the 2-CNC replaceable Mg alloy barrels are installed on the 1-reactor at an angle of 15-60 degrees.

[0025] Figure 19-water storage and cooling box and 11-water level / temperature instrument, 10-hydrogen storage tank and 12-hydrogen outlet valve / pipe are on the upper part of 1-reactor, 2-digital control replaceable Mg alloy barrel is tilted into 1-reactor, and its barrel mouth is coaxial with the center line of 5-ultrasonic generator high frequency head on the opposite side; 3-digital control box is at the lower part of 2-digital control replaceable Mg alloy barrel installation position;

[0026] 6-temperature, pressure, liquid level and concentration meter is installed on the wall of 1-reactor, and the measuring head goes deep into 1-reactor; 8-water feed pump / valve on the upper part of 6-temperature, pressure, liquid level and concentration meter is connected with 9-water storage and cooling box and 1-reactor.

[0027] 7-water flotation grid is inside 1-reactor to prevent water surface vibration, 4-replaceable residue collection bin is installed at the bottom of 1-reactor, and A-emergency drain valve is installed at the lower part of 1-reactor.

[0028] Figure 2 2-CNC replaceable Mg alloy barrel, b / c-CNC motor is connected in series with e-rotating rod and blade in a-barrel head, d-feeding tray / rod, f-Mg alloy rod and e-rotating rod and blade; j-external sealing cover is connected with h-barrel shell bottom of 2-replaceable Mg alloy barrel.

[0029] The working technical process of the device is as follows:

[0030] At the beginning of work, first remove the j-outer sealing cover on the 2-NC replaceable Mg alloy barrel, install it tilted on the 1-reactor and lock it, and at the same time connect the control line and power line of the b / c-NC motor to the 4-NC box; the 4-NC box outputs a signal to start the 8-water pump / valve to pump water from the 2-water storage / cooling box into the 1-reactor box.

[0031] When the water level in 1-reactor reaches the water level set by 6-temperature, pressure, liquid level and concentration meter, the CNC system of 4-CNC box sends a signal to control the b / c-CNC motor in a-barrel head of 2-CNC replaceable Mg alloy barrel to start, and the e-rotating rod and the blade rotate. The blade rotates and cuts the f-Mg alloy rod that is force applied by d-feeding tray / rod, scrapes the oxide layer on the Mg alloy rod, and at the same time produces Mg alloy microparticles that react with H2O to produce H2 and Mg(OH)2.

[0032] At this time, the 5-ultrasonic generator is started, and the oxide layer and Mg(OH)2 on the surface of the Mg alloy particles fall off under the strong vibration of the ultrasonic wave, so that the Mg microparticles quickly complete the reaction with H2O to generate H2 and Mg(OH)2.

[0033] The H2 gas is cooled after passing through 9-water storage / cooling box and then enters 10-storage tank, and then is discharged through 12-H2 gas outlet pipe / valve for use by H2-using equipment.

[0034] Mg(OH)2 is heavier than water and sinks into the 5-exchangeable residue collection bin for recycling.

[0035] The b / c-NC motors in the 2-NC replaceable Mg alloy barrel have different rotation directions and speeds. The b-NC motor is connected to the e-rotating rod and the blade to control the amount of f-Mg alloy rods cut by the blade, that is, to control the output of H2 gas. The c-NC motor is connected to the d-feeding tray / rod to push the f-Mg alloy rod. When the f-Mg alloy rod has finished reacting, it will alarm the system in the 4-NC box and replace the new 2-NC replaceable Mg alloy barrel and the 4-replaceable residue collection bin.

[0036] When the Mg alloy rod reacts with H2O, the liquid level, temperature, pressure, concentration, etc. in the reactor 1 are all changing. The temperature, pressure, liquid level and concentration meter 6 transmits the above signals to the control system in the CNC box 4 to control the switch of the water supply pump / valve 8 to ensure the H2O required by the Mg alloy and H2O. The water level / temperature meter 11 monitors the water level changes in the water storage and cooling box 9 and alarms when the water level drops to insufficient.

[0037] 7- The water flotation grid is installed inside the 1-reactor and floats on the water level line to prevent the water line inside the 1-reactor from oscillating.

[0038] Application examples:

[0039] In accordance with the technical solution of this case, several trial research machines were trial-produced and improved many times; especially the CNC replaceable Mg alloy barrel, after many improvements, continuously produced high-quality hydrogen in the hydrogen production experiment, meeting the design requirements of this case.

[0040] Advantages of this technology:

[0041] 1. The use of Mg alloy rods and H2O hydrolysis reaction raw materials in the reactor greatly reduces the cost of hydrogen production.

[0042] 2. The application of CNC replaceable Mg alloy barrels makes the application of hydrogen no longer require special, expensive, and dangerous hydrogen storage, transportation, hydrogenation equipment and supporting equipment and sites.

[0043] 3. The application of CNC replaceable Mg alloy barrels with unified specifications and standards can be replaced at any time just like refueling a car at a gas station, which greatly reduces the cost of hydrogen use.

[0044] 4. The application of CNC replaceable Mg alloy barrels can ensure the safe storage, transportation and use of Mg alloys.

[0045] 5. The replaceable residue collection bin in the reactor can recycle and reuse Mg(OH)2, thus ensuring the recycling of Mg resources.

Claims

1. A low-cost, high-efficiency, digitally controlled replaceable magnesium alloy barrel + hydrolysis hydrogen production device, characterized by: 9-water storage and cooling box and 11-water / temperature level meter, 10-hydrogen storage tank and 12-hydrogen outlet valve / pipe are on the upper part of 1-reactor; 6-temperature, pressure, liquid level and concentration meter are installed on the wall of 1-reactor, and the measuring head is deep into 1-reactor; above 6-temperature, pressure, liquid level and concentration meter are 8-water feed pump / valve and 9-water storage and cooling box and 1-reactor; 2-CNC replaceable Mg alloy barrel is tilted into 1-reactor, and its barrel mouth is coaxial with the center line of 5-ultrasonic generator high-frequency head on the opposite side; 4-CNC box is installed at the lower part of 2-CNC replaceable Mg alloy barrel.

2. According to claim 1, a low-cost, high-efficiency, digitally controlled replaceable magnesium alloy barrel + hydrolysis hydrogen production device is characterized by: The b / c-CNC motors in the 2-CNC replaceable Mg alloy barrel have different rotation directions and speeds. In the a-barrel head, the b-CNC motor is connected to the e-rotating rod and the blade, the c-motor is connected to the d-feeding tray, and the f-Mg alloy rod is connected in series with the e-rotating rod and the blade; the j-external sealing cover is connected to the h-barrel shell bottom of the 2-replaceable Mg alloy barrel.

3. A low-cost, high-efficiency, digitally controlled replaceable magnesium alloy barrel + hydrolysis hydrogen production device according to claims 1 and 2, characterized in that: A plurality of 2-CNC replaceable Mg alloy barrels can be installed on the 1-reactor, and the 2-CNC replaceable Mg alloy barrels are installed on the 1-reactor at an angle of 15-60 degrees.

4. A low-cost, high-efficiency, digitally controlled replaceable magnesium alloy barrel + hydrolysis hydrogen production device according to claims 1, 2, and 3, characterized in that: 7-water flotation grid is inside 1-reactor, 4-replaceable residue collection bin is installed at the bottom of 1-reactor, and A-emergency drain valve is installed at the lower part of 1-reactor.

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