Air separation method of PSA nitrogen generator
Pure nitrogen can not be produced directly from nature, so air separation is the first choice. Air separation method includes: cryogenic method, pressure swing adsorption method (PSA), membrane separation method. With the rapid development of industry, nitrogen has been widely used in chemical industry, electronics, metallurgy, food, machinery and other fields. China's demand for nitrogen is more than 8% per year. The chemical properties of nitrogen are not vivid. It is very lazy under ordinary conditions and is not easy to react with other substances. Therefore, nitrogen is widely used as maintenance Gas and seal gas in metallurgical industry, electronic industry and chemical industry. Generally, the purity demand of maintenance gas is 99.99%, and some high-purity nitrogen demand is more than 99.998%. Liquid nitrogen of nitrogen generator is a convenient cold source, which is widely used in food industry, work and semen storage of animal husbandry. In the production of synthetic ammonia in chemical fertilizer industry, if the mixture of material gas hydrogen and nitrogen of synthetic ammonia is washed and refined with pure liquid nitrogen, the content of inert gas will be very small, and the content of sulfur monoxide and oxygen will not exceed 20ppm.
Pure nitrogen can not be produced directly from nature, so air separation is the first choice. Air separation method includes: cryogenic method, pressure swing adsorption method (PSA), membrane separation method. With the rapid development of industry, nitrogen has been widely used in chemical industry, electronics, metallurgy, food, machinery and other fields. China's demand for nitrogen is more than 8% per year. The chemical properties of nitrogen are not vivid. It is very lazy under ordinary conditions and is not easy to react with other substances. Therefore, nitrogen is widely used as maintenance Gas and seal gas in metallurgical industry, electronic industry and chemical industry. Generally, the purity demand of maintenance gas is 99.99%, and some high-purity nitrogen demand is more than 99.998%. Liquid nitrogen of nitrogen generator is a convenient cold source, which is widely used in food industry, work and semen storage of animal husbandry. In the production of synthetic ammonia in chemical fertilizer industry, if the mixture of material gas hydrogen and nitrogen of synthetic ammonia is washed and refined with pure liquid nitrogen, the content of inert gas will be very small, and the content of sulfur monoxide and oxygen will not exceed 20ppm.