(19)
(11) EP 2 642 198 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.06.2016 Bulletin 2016/25

(43) Date of publication A2:
25.09.2013 Bulletin 2013/39

(21) Application number: 13159838.5

(22) Date of filing: 19.03.2013
(51) International Patent Classification (IPC): 
F23B 10/02(2011.01)
F23B 60/02(2006.01)
F23J 1/00(2006.01)
 F23B 30/02(2006.01)
F23B 90/06(2011.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 21.03.2012 CA 2771112

(71) Applicants:
  • Hoval Aktiengesellschaft
    9490 Vaduz (LI)
  • BMA TECH INC.
    St-Laurent, Quebec H4T 1Y4 (CA)

(72) Inventors:
  • Telian, Markus
    6912 Hörbranz (AT)
  • Malouin, Louis-Michel
    St-Laurent,, Québec H4L 5H9 (CA)

(74) Representative: Zenz Patentanwälte Partnerschaft mbB 
Rüttenscheider Straße 2
45128 Essen
45128 Essen (DE)

   


(54) Grate and method of burning a granular fuel material


(57) The substantially horizontally-disposed grate is used for burning a granular fuel material, for instance a biomass material, to be fed onto a loading area of the grate while a primary air feed is coming from below the grate. The grate includes a perforated bed floor having a downwardly-sloping upper surface converging towards a discharge opening where char is concentrated as the granular fuel material is burned during operation. The grate also includes an elongated and bottom-perforated char-receiving conduit positioned immediately under the bed floor. The char-receiving conduit has an inlet end positioned under the discharge opening, and an outlet end that is opposite the inlet end. The char-receiving conduit downwardly slopes between the inlet end and the outlet end. A method of burning a granular fuel material is also disclosed. The proposed concept can increase the overall thermal efficiency of a heat generator and reduce gas and particle emissions in the atmosphere.







Search report















Search report