Purification and Processing of Electrochemically Produced Hydroxylammonium Nitrate.

摘要

Hydroxylammonium nitrate (HAN) is the major component of the aqueous monopropellants used in the liquid propellant gun. It is produced by the electrolytic reduction of nitric acid, a process that results in a dilute HAN-water mixture containing excess nitric acid. This excess acid must be removed before the HAN is concentrated for use in propellant production. A strongly acidic, cation exchange resin, INIAC CUP-110, has been evaluated for this purpose and works quite well. The resin is used to replace the hydrogen ion in the HAN-acid mixture with hydroxylammonium, thus removing the undesirable acid and producing additional HAN. The possibilities of using basic, anion exchange resins are also discussed. Keywords: Liquid propellants; Hydroxylammonium nitrate; HAN; LGP 1845; LGP 1846; Ion exchange. (kt)