MOBILE NITROGEN COMPRESSOR STATION AND METHOD OF PRODUCTION OF NITROGEN-BASED INERT GAS MIXTURE Russian patent published in 2005 - IPC

FIELD: manufacture of compressors; production of nitrogen-based compressed inert gas mixture from atmospheric air.

SUBSTANCE: proposed compressor station mounted on truck chassis includes multi-stage piston-type air compressor, membrane-type gas distributing module and module-type nitrogen plant. Outlet of third compression stage of air compressor is connected via cooler and water-and-oil separator with inlet of gas-distributing module through filter unit. Outlet of gas-distributing module is connected with inlet of air compressor fourth stage. Air compressed preliminarily in compressor stages is cooled down and cleaned in coolers and water-and-oil separators, after which it is delivered through pipe lines to inlet of gas-distributing module and cleaned in filters and water-and-oil separators from condensed moisture, mechanical admixtures and oil and is fed to gas-distributing reservoirs through gas-distributing unit; gas-distributing reservoirs are interconnected and are located in series and/or in parallel; concentration of oxygen in these reservoirs is reduced to 0.1%. Inert nitrogen gas mixture is fed to compressor stages, cooled to temperature below 60°C and cleaned from moisture and oil in coolers and water-and-oil separators of subsequent stages; then, it is fed to consumer through receiver, check valve and cock. During start at negative temperatures, pre-start heater is switched on and high-temperature gases enter preheating chamber and truck body of mobile compressor station. As required temperature has been attained, diesel engine and compressor are started and high-temperature gases are fed from preheating chamber to thermostatted body of module-type nitrogen plant through warm sleeve.

EFFECT: extended field of application; increased service life of station; facilitated procedure of start.

9 cl, 8 dwg