Patent ID: 9557105
Date: 2017-01-31
CPC Classifications: C10L,F26B,Y02E

Claim:
1. A method at producing torrefied products which are burnable to produce thermal energy, in which method a lignocellulose biomass material (W) is used as a starting material for the torrefied products and which method comprises the steps of: passing lignocellulose material (W) through a roaster in which the lignocellulose material is subjected to a temperature in the range of 180° C.-400° C. in an inert atmosphere which is substantially free from oxygen such that the lignocellulose material becomes torrefied; passing the torrefied material from the roaster to a mill, a cooling liquid is added to the torrefied material at least in one position between the roaster and the exit of the mill such that the cooling liquid is mixed in the torrefied lignocellulose material during the grinding, and passing the torrefied lignocellulose material and mixed cooling liquid to a separator where steam is separated thereby cooling the torrefied material simultaneously, and subsequently passing the cooled torrefied lignocellulose material to a pelletizing machine.