EP 0576053 B1 19960131 - Process for drying aqueous solids in a fluidized bed
Title (en)
Process for drying aqueous solids in a fluidized bed
Title (de)
Verfahren zum Trocknen wasserhaltiger Feststoffe im Wirbelbett
Title (fr)
Procédé pour le séchage de solides aqueux dans un lit fluidisé
Publication
Application
Priority
DE 4220953 A 19920626
Abstract (en)
[origin: EP0576053A1] The fluidised bed (3), in which the water-containing solids are dried, is indirectly heated by means of at least one heat exchanger device (4). Water vapour-rich fumes are extracted from the fluidised bed (3), and a part of the fumes is passed as fluidising medium through the fluidised bed (3). The remaining fumes are cooled, to form a fume condensate. At least a part of the fume condensate is contacted directly in a purification zone (26) with a stripping medium in the form of gas or vapour. From the purification zone (26), a purified condensate and, separately from the latter, stripping medium containing impurities are drawn off. Preferably, steam is used as the stripping medium in the purification zone (26). <IMAGE>
IPC 1-7
IPC 8 full level
F26B 25/00 (2006.01)
CPC (source: EP US)
F26B 25/005 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB GR NL
DOCDB simple family (publication)
EP 0576053 A1 19931229; EP 0576053 B1 19960131; AU 4149493 A 19940106; AU 659317 B2 19950511; CA 2097011 A1 19931227; DE 4220953 A1 19940105; DE 59301529 D1 19960314; ES 2085104 T3 19960516; GR 3019080 T3 19960531; US 5353517 A 19941011
DOCDB simple family (application)
EP 93201455 A 19930521; AU 4149493 A 19930625; CA 2097011 A 19930526; DE 4220953 A 19920626; DE 59301529 T 19930521; ES 93201455 T 19930521; GR 960400489 T 19960222; US 7837293 A 19930617