(19)
(11) EP 1 564 515 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.04.2011 Bulletin 2011/17

(43) Date of publication A2:
17.08.2005 Bulletin 2005/33

(21) Application number: 05397006.7

(22) Date of filing: 17.02.2005
(51) International Patent Classification (IPC): 
F26B 9/10(2006.01)
F26B 23/10(2006.01)
 F26B 3/28(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 17.02.2004 FI 20045042

(71) Applicant: VAPO OY
40100 Jyväskylä (FI)

(72) Inventor:
  • Ilmavirta, Ilkka
    40520 Jyväskylä (FI)

(74) Representative: Helke, Kimmo Kalervo 
Kespat Oy P.O. Box 601
40101 Jyväskylä
40101 Jyväskylä (FI)

   


(54) Method for drying wet waste materials


(57) The invention relates to a method in the drying of wet materials, such as sludges and bark mass, in which the materials to be dried are spread as a thin layer (16) on a base (12) and solar energy is used in the drying, by exposing the spread material to the effect of solar radiation and the wind. The drying is performed in rapid cycles, in periods of at most 3 days, on the basis of the forecast evaporation.







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