Abstract
Polydimethylsiloxane, surface‐modified glass, unmodified glass, and hollow‐fiber were evaluated as membrane materials for chlorine beneficiation. The purification of industrial grade chlorine and the recovery of chlorine from a tail gas in a chlor‐alkali process were considered. Polydimethylsiloxane (at low temperature) appeared to be a suitable material for both cases. The cost of separation was €0.04/kg Cl2 recovered for Case 1 and €0.07/kg Cl2 for Case 2. The selectivity of the surface‐modified glass is lower and complex, expensive configurations were required. Glass hollow fibers achieved the purity specifications but low permeabilities necessitate large modules.
Published Version
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