Food-grade nitrogen is an important food processing auxiliary gas, widely used in snack food puffing, fresh-keeping packaging, anti-oxidation and anti-caking links. Small food-grade nitrogen generators are professional nitrogen supply equipment developed for small and medium-sized commercial snack processing plants, which fully conforms to food safety production standards. Nitrogen used in food processing must be pure, sterile, oil-free and pollution-free, without any harmful impurities, to avoid food safety risks. This special nitrogen generator adopts food-grade purification technology to ensure that the produced nitrogen meets the national food additive nitrogen standard, which is safe and harmless for food contact.

In terms of structural and purification design, the food-grade nitrogen generator adds multi-stage food-grade precision filtration and sterile purification modules on the basis of conventional PSA nitrogen generation technology. The equipment is equipped with oil-free air compression system to prevent lubricating oil pollution, and the internal pipelines and containers are made of food-grade stainless steel materials, which are corrosion-resistant, easy to clean and do not produce harmful precipitation. Through multi-stage filtration, it effectively removes oil, water, dust and microbial impurities in the air, and the produced nitrogen has no peculiar smell, pure texture, and fully meets the food-grade safety requirements. The nitrogen purity is stably maintained at 99.9% to 99.99%, which is the best purity range for food fresh-keeping and packaging.

In terms of application value in snack processing, food-grade nitrogen can effectively extend the shelf life of puffed snacks, nuts, fried foods and other products. Filling nitrogen in food packaging can exhaust air, inhibit the growth of aerobic bacteria, prevent food oxidation, deterioration and mildew, and avoid product caking and crushing during transportation. The small integrated design of the equipment is suitable for the compact workshop layout of commercial snack factories, with simple operation, low noise and low energy consumption. The intelligent automatic gas supply system can adjust gas production according to production demand, realizing on-demand gas supply and no waste. Compared with purchased food-grade bottled nitrogen, on-site nitrogen production by special generators greatly reduces production costs and ensures the continuity and safety of food production gas supply.