<p>A torrefaction system includes at least one pool containing a liquid heat transfer agent and a conveyor system. The heat transfer agent provides thermal contact with biomass fragments to heat the biomass fragments into biocoal. The conveyor system transports the biomass through the at least one pool in a first direction and transporting the biocoal in a second direction opposite to the first direction in the at least one pool. The heat transfer agent may be oil, paraffin, or molten salt. The conveyor system transports a continuous stream of the biomass fragments into the pools. The torrefaction apparatus further includes a gas collecting system that collects and separates condensable volatile organic compounds during the torrefaction process.</p>
申请公布号
CA2807094(C)
申请公布日期
2015.03.31
申请号
CA20112807094
申请日期
2011.07.29
申请人
ACADEMIA SINICA;SHU, FRANK H.;CAI, MICHAEL J.;LUO, FEN-TAIR