METHOD AND PROCESSING LINE FOR REPROCESSING OF OXYGEN-CONTAINING IRON COMPOUNDS Russian patent published in 2004 - IPC

FIELD: chemical industry, in particular, hydrogen and oxygen production. SUBSTANCE: processing line has unit A for converting ferric oxide into ferrous oxide; hydrogen production unit B; settler C; ferric oxide production unit D; refrigerating unit E. Unit A has electron beam accelerator 3 and processing table 1 arranged under electron beam accelerator 3. Ceramic trays 5 for transportation of ferric oxide powder are positioned on table 1. Chamber 38 is designed for accumulating and discharge of oxygen obtained upon exposing to radiation of ferric oxide powder, which is converted in ferrous oxide and collected in hopper 37. Ferrous oxide powder is transported by jet pump 14 of unit B including reactor 6 for obtaining of hydrogen and iron hydroxides. Reactor 6 comprises mixer 12 rotated by drive 11, branch pipes 7, 13 and 19 for supplying of water, powder and for discharge thereof, respectively, electrodes 9 and 10, air duct 15 for withdrawal of hydrogen. Inlet end of air duct 15 is closed with atomic membrane 20 of palladium. Sucking tube 18 with pump 17 is designed for transportation of iron hydroxides for further reprocessing. Branch pipe 13 is positioned tangentially to reactor inner surface toward rotation direction of blades of mixer 12. Iron hydroxides dross with moisture content of up to 20% is produced in unit C having settler 21 with mixer 25, pipeline 24 for intake of settled water 22, pump 28 and pipeline 27 for discharge of wet dross 23. Unit D has tunnel furnace 31 with roller table 30, on which ceramic trays 29 are positioned. Heaters 32 are arranged above trays 29. Opening 40 is designed for discharge of water steam and oxygen directed by steam collector 35 and steam withdrawal pipe 36 into reactor 6 via pipeline 44 or via T-valve 41 and pipeline 46 into refrigerating unit E. Dehydrated powder is discharged into feeding hopper 33 through discharge opening of furnace equipped with gate 42. Platform 43 for discharge of dehydrated ferric oxide powder is connected to roller table 2 by means of transportation device 45. Water and oxygen steam mixture delivered into unit E is condensed and cooled. Oxygen is withdrawn via branch pipe 47, distilled water is discharged via branch pipe 48. All units may be mounted on stationary platform in two lines or in vehicle body. All units, except for unit E, are positioned inside casing 49. EFFECT: provision for producing of oxygen and hydrogen in single processing cycle with the use of cheap and available raw material, and reduced power consumption. 25 cl, 8 dwg