LDH manufacturer model: KDON-200 liquid nitrogen generator

A nitrogen generator uses air as raw material and separates oxygen and nitrogen through physical methods.
There are three types in industry, namely cryogenic air separation, molecular sieve air separation (PSA), and membrane air separation.
A cryogenic air separation for nitrogen production
Cryogenic air separation for nitrogen production is a traditional nitrogen production method with a history of nearly several decades. It uses air as raw material, undergoes compression and purification, and then uses heat exchange to liquefy the air into liquid air. Liquid air is mainly a mixture of liquid oxygen and liquid nitrogen. By utilizing the different boiling points of liquid oxygen and liquid nitrogen (at 1 atmosphere, the former has a boiling point of -183 ℃, while the latter has a boiling point of -196 ℃), nitrogen is obtained by separating them through the refinement of liquid air. The cryogenic air separation nitrogen production equipment is complex, occupies a large area, has high infrastructure costs, requires a large one-time investment in equipment, has high operating costs, produces gas slowly (12-24h), has high installation requirements, and has a long cycle. Taking into account factors such as comprehensive equipment, installation, and infrastructure, the investment scale of PSA units with the same specifications for equipment below 3500Nm3/h is 20% lower than that of cryogenic air separation units? 50%. The cryogenic air separation nitrogen production unit is suitable for large-scale industrial nitrogen production, while the medium and small-scale nitrogen production machines appear uneconomical.