Process flow and principle

The operation of membrane systems is based on the principle of differential velocity with which various gas mixture components permeate membrane substance. The driving force in the gas separation process is the difference in partial pressures on different membrane sides .Each gas has its permeability to membrane. Due to permeability difference, when compressed air goes through the membrane units, as "fast gas", oxygen permeates through membrane walls to outside, Nitrogen as "fast gas" is collected at outlet. Higher pressure leads to high permeability of each gas, at the mean time,the efficiency drops.

In order to advance surface area of membrane and decrease the thickness of membrane makes polymer into hollow fiber. Making fasciculus consist of every supper thin hollow fiber, and then revolving to hollow fiber membrane modules-separator according to fixed separating surface. UBE super thin hollow fiber has got thinner wall and tubing, so this brings bigger specific area and higher nitrogen recovery rate to it. Inaddition, UBE super thin hollow fiber has got thinner wall and tubing, so this brings bigger specific area and higher nitrogen recovery rate to it. In addition,UBE membrane has long life, good pressure resisrance and energy saving. Comparing with other nitrogen generating membrane at the same separaring area, UBE membrane is smaller and lighter, and the capacity of air compressor used in nitrogen generation system is also smaller(better energy saving).