... requires air compressor, refrigeration dryer, filters, air tank, nitrogen generator and gas buffer tank. 2, Principle: When the process ... & Petro-chemicals, Coal-mine, Metallurgy, Pharmacy, SMT, Fire-resistance, lab, Air driving, and so on... 1. Metallurgy: For anneal protection ... , Main Technical Parameters of ZR-3/30Nm³/h Nitrogen Generator Nitrogen Capacity/Flowrate: 3-3000Nm³/h Nitrogen Purity:95%- ...