Engineering Feasibility Study for Elimination of Nitroglycerin from Solvent Vapors
ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER DOVER NJ LARGE CALIBER WEAPON SYSTEMS LAB
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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 was an adsorption system using a styrene-divinylbenzene copolymer resin for separation of the NG from the solvent vapors. The resin effectively adsorbed the NG and allowed the solvent vapors to pass free of any NG contamination. The polymeric adsorbents are macroreticular ion-exchange beads without their ionic functionality, but are characterized by a spectrum of surface polarities and variety of surface areas, porosities, and pore-size distributions. These adsorbents have a relatively high thermal stability and NG adsorption capacity.
- Polymer Chemistry
- Ammunition and Explosives