In general, hydrogen production using alkaline water electrolysis and purification of hydrogen and oxygen purity can be as high as 99.999%. Among them, hydrogen as an energy source, related mid - and long-term planning and development has been put on the agenda, but as a by-product gas oxygen, the relative utilization rate is not high. So the question is, how much good can be done if all this oxygen is put to good use?

At present, the price of bottled oxygen on the market is about 20 to 40 yuan (40L, pressure of 130MPa), the price of oxygen varies by region. For example, the 99.999% high purity oxygen in Jiangsu is 4500-5000 yuan/ton at present. If freight is included, the transportation cost for 1 kilometer is about 0.9 yuan.

The production process of "green oxygen" is clean and environmentally friendly, which can indirectly reduce the production cost of "green hydrogen". For example, in a project of our company, the hydrogen production equipment of electrolytic water produces 160 million standard cubic meters of hydrogen per year and 0.8 million standard cubic meters of oxygen by product per year. If the use of oxygen, with the price estimate in Jiangsu area, by - product oxygen can achieve hundreds of millions of yuan of sales. In this way, the problem of resource waste caused by the direct discharge of high-purity oxygen in the process of hydrogen production from electrolytic water is solved, without carbon emission in the whole process, and the application scenario of "green hydrogen" is also expanded. The main method of making green hydrogen is hydrogen production from electrolytic water.

Industrial oxygen quality generally requires a purity of more than 99%, so the purity of 99.999% of the by-product oxygen can be used in large quantities. In refining and chemical industry and electrical industry, such as oxygen rich technology. Generally, the cost of oxygen used by enterprises is between 1.7 yuan and 4.3 yuan /Nm³. If the by-product oxygen of hydrogen production from electrolytic water is utilized, energy consumption and maintenance cost will be greatly reduced. In addition, the production line of coal to ethylene glycol also needs high purity oxygen. Using electrolytic water to produce hydrogen and by-product oxygen can save the cost of coal to gas production and reduce carbon by 40%, which is more conducive to the overall risk resistance and market competitiveness of the enterprise.

Gaoqi encourages customers to recycle "green oxygen", the by-product of "green electricity" to produce "green hydrogen", by optimizing the industrial chain, so as to achieve the purpose of saving energy and reducing cost. This not only promotes the in-depth development and utilization of renewable energy, but also extends the road to carbon-free energy production and manufacturing.