Method and apparatus for pelletizing blends of biomass materials for use as fuel

摘要

An assembly for processing green biomass materials from two separate feed sources for use as a fuel pellet includes a drying assembly, a torrefaction assembly and a heating assembly. The drying assembly is adapted to convert the green biomass material obtained from a first source to white biomass material. The torrefaction assembly is adapted to convert green biomass material obtained from a second source to torrefied biomass material. The heating assembly provides heat for both the drying assembly and the torrefaction assembly.

主权项

1. An assembly for processing green biomass materials from two separate feed sources for use as a fuel pellet, said assembly comprising:
(A) a drying assembly for converting green biomass material from a first source to white biomass material; (B) a torrefaction assembly for converting green biomass material from a second source to torrefied biomass material; (C) a heating assembly comprising:
(1) a heat exchanger having a plurality of heat transfer coils therein containing a thermal fluid;(2) a burner for heating the thermal fluid in the heat transfer coils to a temperature within the range of 200° F. to 550° F., said burner also producing flue gases;(3) a combustion chamber that is operatively connected between the burner and the heat exchanger;(4) means for conveying heated thermal fluid from the heat exchanger to the drying assembly;(5) means for conveying heated thermal fluid from the heat exchanger to the torrefaction assembly; (D) a pellet press for pelletizing a blend of biomass materials processed in the drying assembly and biomass materials processed in the torrefaction assembly; (E) a VOC duct for conveying gases collected at or downstream from the pellet press to the combustion chamber.