Abstract: A portable, self-contained system for producing nitric acid from a supply of electricity and water, incorporates a nitrogen generating unit including a cabinet enclosing a manifold defining a plurality of series connected air combustion chambers each having one electrode concentric within a restricting orifice defined by a second electrode. The unit also includes an air compressor for supplying air which spirals through each combustion chamber to rotate the arc within the orifice, and each combustion chamber is exposed for viewing through a corresponding lens. The system also incorporates a liquid fertilizer generator unit including a closed plastic tank containing water and a submersible pump which recirculates the water through an aspirator where nitrogen gas is introduced into the water and then through a long plastic absorption tube coiled within the tank. The compressor also supplies additional oxygen to the tank for further converting nitrous oxide to nitric acid.

Abstract: Pressurized air is directed into a generally spherical combustion chamber to rotate an electrical arc within a circular aperture formed within an electrode element disposed within the center portion of the chamber. The air is directed through the aperture and the whirling arc to produce a nitrogen dioxide gas which is immediately aspirated into a recirculating flow of water. The water is directed through an elongated tube forming an absorption coil where the gas is absorbed into the water to form a dilute acid solution usable as a nitrate fertilizer.