(19)
(11) EP 1 707 909 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.11.2007 Bulletin 2007/46

(43) Date of publication A2:
04.10.2006 Bulletin 2006/40

(21) Application number: 06007073.7

(22) Date of filing: 03.04.2006
(51) International Patent Classification (IPC): 
F26B 9/10(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 LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 02.04.2005 QA 20054504

(71) Applicant: Qatar Fertiliser Company (S.A.Q.)
Doha (QA)

(72) Inventor:
  • Soyez, Werner
    Doha (QA)

(74) Representative: de Justo Vàzquez, Jorge M. et al
Jacobacci & Partners M. & J. de Justo Castellana 128
28046 Madrid
28046 Madrid (ES)

   


(54) Percolation of hygroscopic bulk material


(57) The phenomenon of caking of hygroscopic particulates is analyzed. Mechanical reconditioning of agglomerated material does not prevent the problem of caking to reoccur, either in bags or other storage areas. Percolation of dry air in the bulk hall utilizes the prolonged residence time in the bulk hall to improve the handling quality of the product once and for all. A simple grid arrangement (3) at the bottom of particulates piles (4) distributes dry air over a certain period, significantly improving the quality of the product.







Search report