Characteristics of water electrolysis hydrogen production equipment
At this stage, the hydrogen production technologies in my country are mainly: water electrolysis hydrogen production technology, photolysis water hydrogen production technology, thermochemical hydrogen production technology, etc. Water electrolysis technology is one of the most popular hydrogen production technologies. Manufacturers of water electrolysis hydrogen production equipment will introduce electrolysis water technology in detail:
Features of electrolyzed water technology: perfect electrolyzed water technology, simple equipment, zero pollution, high hydrogen purity, and low residue content. Applicable to all kinds of places. The disadvantage is that the energy consumption is high and the hydrogen production cost is relatively high.
At this stage, the operating pressure of commercial water electrolysis hydrogen production equipment is 0.8~3Mpa, the operating ambient temperature is 80~90℃, the purity of hydrogen production is 99.7%, and the purity of oxygen production is 99.5%.
The key to hydrogen production by water electrolysis is how to reduce the energy consumption in the whole process of electrolysis and improve the high efficiency of power energy conversion. Electrolyzed water for hydrogen production generally uses strong acid, strong alkali or oxygen-containing solution as the electrolyte for lithium batteries. At this stage, the energy consumption level of the commercial electrostatic precipitator method is about 4.5~5.5kwh/nm3h2, and the energy consumption level is in the middle of 72%~82%. After the conversion, the cost of water electrolysis for hydrogen production is equivalent to 30~40 yuan/KG. The price of electrolysis to produce vaporous hydrogen is about 65% of that of motor gasoline. If liquid hydrogen is produced, it is more than 260% higher than that of motor gasoline.