This report, based on laboratory tests, covers the evaluation of two distinct methods of separating the solvents acetone and ethyl alcohol from nitroglycerin (NG) in an air stream from a multi-base propellant-drying facility. The first method employed a semi-permeable membrane which has been used effectively to remove moisture from a gas stream. The membrane, however, did not effectively remove the NG vapor from the solvent vapors. The second method evaluated ...
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