PSA nitrogen gas generator is extensively applied in chemical industry, metallurgical industry andelectron industry,but there has no instanll in ketone-benzol dewaxing unit of refinery.

• 碳分子筛变压吸附制氮机广泛应用于化工、冶金、电子工业，但在炼油厂酮苯脱蜡装置中的应用还没有先例。