MULTIPLE HEARTH FURNACE FOR PLACING A SOLID AND A GAS IN CONTACT

The invention relates to a multiple hearth furnace for placing a solid and a gas in contact, comprising: a chamber (30); a plurality of trays (41, 42) which are distributed along the longitudinal axis (AA) of the chamber (30); means for circulating the solid in the chamber (45, 46); and means for ci...

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Bibliographische Detailangaben
Hauptverfasser:	VOLLAND, Eric, BOURNAY, Laurent, HERAUD, Jean-Philippe, GONNARD, Sebastien, MORIN, Mathieu
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MECHANICAL ENGINEERING OPEN SINTERING OR LIKE APPARATUS OVENS RETORTS WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a multiple hearth furnace for placing a solid and a gas in contact, comprising: a chamber (30); a plurality of trays (41, 42) which are distributed along the longitudinal axis (AA) of the chamber (30); means for circulating the solid in the chamber (45, 46); and means for circulating the gas (31, 32, 33, 45, 46, 43, 50, 51, 52) in the chamber (30) which comprise a first opening (32) for discharging the gas from the chamber (30) and first gas distribution means (31, 43, 50, 51, 52) which are associated with at least one of the trays (42), the first gas distribution means (31, 43, 50, 51, 52) comprising a plurality of openings (43) which are arranged in the tray (42) in question, an air box (50) which is arranged under the tray (42), and means for supplying gas to the air box (31, 51, 52). L'invention concerne un four à soles multiples pour mettre en contact un solide et un gaz comprenant une enceinte (30), une pluralité de plateaux (41,42) distribués le long de l'axe longitudinal (AA) de l'enceinte (30), des moyens pour faire circuler le solide dans l'enceinte (45, 46), des moyens pour faire circuler le gaz (31, 32, 33, 45, 46, 43, 50, 51, 52) dans l'enceinte (30) comprenant une première ouverture (32) pour évacuer le gaz de l'enceinte (30) et des premiers moyens de distribution de gaz (31, 43, 50, 51, 52) associés à au moins un des plateaux (42), les premiers moyens de distribution de gaz (31, 43, 50, 51, 52) comprenant une pluralité d'orifices (43) aménagés dans le plateau (42) considéré, une boite à vent (50) disposée sous le plateau (42), et des moyens pour alimenter en gaz la boite à vent (31, 51, 52).