Oxygen is also widely used in strategic emerging industries such as coal chemical industry, float glass, new energy, new materials, and environmental protection. The following are the specific applications of oxygen in these fields:

1. Coal chemical industry: In the process of coal chemical industry, oxygen acts as a gasifying agent and reacts with coal to produce coal gas. Coal gasification is the leader of coal chemical industry and the core of clean coal technology. The coal gas produced by coal gasification is synthetic gas, which can further synthesize chemicals such as methanol, dimethyl ether, synthetic ammonia, urea, fuel oil, etc., providing raw materials for downstream chemical industries.

2. Float glass: In the production process of float glass, oxygen is used as a combustion gas, mixed with fuel for combustion, providing the high-temperature environment required for the glass furnace. The flame generated by oxygen combustion has a high temperature and concentrated heat, which helps to improve the melting rate and quality of glass.

3. New energy: In the field of new energy, oxygen is mainly used in fuel cells and solar energy for water splitting and hydrogen production. A fuel cell is a device that directly converts chemical energy into electrical energy, in which oxygen participates as an oxidant in the reaction, reacts with hydrogen gas to generate water and release electrical energy. Solar photocatalytic water splitting for hydrogen production utilizes solar energy to decompose water into hydrogen and oxygen. Hydrogen can be used as fuel, while oxygen can be used in other industrial processes.

4. New materials: In the field of new materials, oxygen is mainly used in processes such as metal smelting and alloy preparation. By introducing oxygen into the molten metal, impurity elements can be removed, improving the purity and performance of the metal. In addition, oxygen can also be used to prepare new materials such as oxide ceramics and glass fibers.

5. Environmental protection: In the field of environmental protection, oxygen is mainly used for wastewater treatment and exhaust gas treatment. By introducing oxygen into wastewater, it can promote the growth and metabolism of microorganisms, accelerate the degradation and transformation of organic matter, and thus purify water quality. In terms of exhaust gas treatment, oxygen can act as an oxidant to react with harmful gases, converting them into harmless substances and reducing environmental pollution.

In summary, oxygen is widely used in strategic emerging industries such as coal chemical industry, float glass, new energy, new materials, and environmental protection, providing important support and guarantee for the development of these fields.