CO2 Removal from Multi-component Gas Mixtures
Utilizing Spiral-Wound Asymmetric Membranes
* W. B. Said, ** M. F. M. Fahmy, *** F. K. Gad, *** G. A. El-Aleem
ABSTRACT
A systematic procedure and a computer program have been developed for
simulating the performance of a spiral-wound gas permeator for the CO2
removal from natural gas and other hydrocarbon streams. The simulation
program is based on the approximate multi-component model derived by
Qi & Henson(1), in addition to the membrane parameters achieved from
the binary simulation program(2) (permeability and selectivity). Applying
the multi-component program on the same data used by Qi & Henson to
evaluate the deviation of the approximate model from the basic transport
model, showing results more accurate than those of the approximate
model, and are very close to those of the basic transport model, while
requiring significantly less than 1% of the computation time. The
program was successfully applied on the data of Salam gas plant
membrane unit at Khalda Petroleum Company, Egypt, for the separation
of CO2 from hydrocarbons in an eight-component mixture to estimate the
stage cut, residue, and permeate compositions, and gave results matched
with the actual Gas Chromatography Analysis measured by the lab.