EP 1067348 B1 20030820 - Process and apparatus for drying granulate
Title (en)
Process and apparatus for drying granulate
Title (de)
Verfahren und Vorrichtung zum Trocknen von Granulat
Title (fr)
Procédé et dispositif de séchage de granulat
Publication
Application
Priority
DE 19931357 A 19990707
Abstract (en)
[origin: EP1067348A1] Each drying airflow supplied to a silo (20, 30) has its own heater (23a, 33a). Drying airflow is controlled both as a function of temperature and the respective heater power. On reaching a given heating power, the respective drying air flow is throttled back. This assures heating to a preselected desired temperature, independently of the drying air quantity distributed into the individual air flows. An Independent claim is included for the plant carrying out the process. A drying-air dryer (10), heater (23a, 33a), blower (6) and drying circuit (9) are employed. Flow- (11) and return- (12) lines have interconnecting branches (21, 28;31, 38) for each supply line (21, 31). Preferred features: Throttling of a drying air stream in accordance with heating power, is triggered when the relevant heater does not switch off within a given interval. In each branched line, the individual heater is located after the valve.
IPC 1-7
IPC 8 full level
F26B 21/06 (2006.01); F26B 21/08 (2006.01); F26B 21/12 (2006.01)
CPC (source: EP)
F26B 21/083 (2013.01); F26B 21/12 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1067348 A1 20010110; EP 1067348 B1 20030820; AT E247812 T1 20030915; BR 0002304 A 20010313; CA 2312511 A1 20010107; DE 19931357 C1 20010405; DE 50003340 D1 20030925; ES 2204403 T3 20040501; MX PA00006721 A 20050401
DOCDB simple family (application)
EP 00112648 A 20000615; AT 00112648 T 20000615; BR 0002304 A 20000704; CA 2312511 A 20000627; DE 19931357 A 19990707; DE 50003340 T 20000615; ES 00112648 T 20000615; MX PA00006721 A 20000707