... under pressure. Non-adsorbed nitrogen is discharged from outlet of adsorption tower. Oxygen is desorbed, discharged ... Application:Food packing, Food storing, Electric & Electronic industry, Petro-gas & Oil field, Chemicals & Petro-chemicals, Coal-mine, Metallurgy ... and new material industries: For chemical material gas, pipeline blowing, gas replacement, gas protection, product transport, etc. Used in ...