Modeling of ternary gas separation in hollow fiber membrane

A mathematical model was established to describe a hollow fiber membrane separator by ternary gases which including hydrogen, methane and carbon monoxide. This model can be used for simulation, design and operation of membrane-based gas separation processes. The mathematical model consists of equations for the conservation of mass and momentum, which allows the consideration of effects such as pressure drops and various flow patterns within the permeator. The method of solution for the set of differential equations employs finite difference which replaces each of the differential equations by the corresponding finite difference expression. In the current implementation, membrane modules with concurrent or countercurrent flows and permeate pressure drops can be handled. Numerical results covering effects of different feed and permeate pressures on the design and operation of hollow fiber permeator.