Working principle and structural characteristics of hydrogen generator
Working principle and structural characteristics of hydrogen generator
1, the working principle of hydrogen generator
The hydrogen produced by the hydrogen generator comes from two different sources. The following is a simple comparison of these two working principles: 1. Pure water electrolysis for hydrogen production
sub-water or double distilled water) is sent to the anode chamber of the electrolytic cell, and the water will be decomposed at the anode immediately after electrification: 2H2O=4H++ 2O2-, decomposed into negative oxygen ions (O2-), and then release electrons at the anode to form oxygen (O2), which is discharged from the anode chamber, and carries part of the water into the water tank, the water can be recycled, and the oxygen is put into the atmosphere from the small hole on the top of the water tank. Hydrogen protons in the form of hydrated ions (H+?XH2O), under the action of the electric field force, pass through the SPE ion membrane, reach the cathode to absorb electrons to form hydrogen, and after being discharged from the cathode chamber, enter the gas-water separator, where it is removed from the electrolytic cell. Most of the water carried out, and the hydrogen containing trace water is absorbed by the dryer, and the purity will reach more than 99.999%. 2. Hydrogen production by lye electrolysis The working principle is the traditional diaphragm lye electrolysis method. The conductive medium in the electrolytic cell is potassium hydroxide aqueous solution, the separator of the two-pole chamber is a high-quality diaphragm for aerospace electrolysis equipment, and the grid electrode with corrosion resistance and good mass transfer integrated with the end plate constitutes the electrolytic cell. Immediately after applying direct current to the two poles, water molecules undergo electrochemical reactions at the two poles of the electrolytic cell, producing oxygen at the anode and hydrogen at the cathode. The reaction formula is as follows: Anode: 2OH- -2e → H2O+1/2O2↑ Cathode: 2H2O +2e → 2OH- +H2↑ Overall reaction formula: 2H2O → 2H2↑ +O2↑ Display, flow tracking, etc. are all automatically controlled; under constant pressure, the output hydrogen can be fully adjusted according to the amount of hydrogen used by the gas chromatograph (within the range of gas production).
Hydrogen generator series products that use SPE technology to electrolyze pure water (eliminate alkali addition) to produce high-purity hydrogen are a kind of high-tech patented products that are light, efficient, energy-saving and environmentally friendly. Oxygen is released directly into the atmosphere.
2. Structural characteristics
Zero-pole distance, highly active SPE catalytic electrode
Multipolar multi-element electrolyzer structure with excellent chemical process performance for mass transfer and heat transfer
Selection of materials for bipolar multi-element electrolyzers with superior electrochemistry, corrosion resistance and passivation resistance
Complete, perfect and reliable electrical automatic control system
3. Features
Hydrogen production by electrolysis of pure water (no alkali addition), no corrosion, no pollution, high hydrogen purity
Low cell voltage, high hydrogen purity, and long desiccant replacement cycle
The electrolysis current is small, but the gas production is sufficient, and the pressure rise is fast (3 to 5 minutes)
Hydrogen voltage stabilized, steady flow output, and automatic tracking with the change of load gas consumption
High voltage regulation accuracy, complete and reliable automatic protection technologies such as water shortage, overvoltage, and waterproof flushing
Low noise (when the user is using, the fan basically does not start)
High electrolysis efficiency and low power consumption
4, installation and use
1) Preparation before start-up
1. Take the instrument out of the packing box, check whether it is damaged due to improper transportation, and check whether the spare parts of the instrument, the certificate of conformity and the warranty card are complete.
2. And prepare the following items: 300mg KOH and several kilograms of silica gel dry particles, 1 glass stirring rod, 1 500ml glass container
2). Add electrolyte
1. Take out all the potassium hydroxide in the spare parts and pour it into a container, then add 500 ml of secondary distilled water or deionized water as the mother solution, stir well and wait for the electrolyte to be completely cooled before use.
②. Open the outer cover of the liquid storage tank and take out the inner cover. (The inner cover is to prevent liquid leakage during transportation, and it should not be run with the inner cover during use.) Keep the inner cover for use when transporting again.
③. Pour the cooled electrolyte (mother liquor) into the storage tank, and then add double distilled water or deionized water. Do not exceed the upper limit water level line, nor lower than the lower limit water level line. Screw on the outer cap and it is ready to use after 10 minutes.
