Title:
METHOD FOR THE TORREFACTION OF LIGNOCELLULOSIC MATERIAL
Document Type and Number:
WIPO Patent Application WO/2013/003599
Kind Code:
A3
Abstract:
A method for torrefaction of Iignocellulosic biomass using a torrefaction reactor vessel having stacked tray assemblies comprising: continuously feeding the biomass to an upper inlet to the torrefaction reactor vessel such that the biomass material is deposited on an upper tray assembly of a plurality of tray assemblies stacked vertically within the reactor; as the biomass moves in the vessel while supported by a tray of each tray assembly, heating and drying the biomass material with a gas injected into the vessel, wherein the gas is substantially non-oxidizing of the biomass and is under a pressure of at least 3 bar gauge and at a temperature of at least 200°C; cascading the biomass down through the trays by passing the biomass through an opening in each of the trays to deposit the biomass on the tray of the next lower tray assembly; discharging torrefied biomass from a lower outlet of the torrefaction reactor, and circulating gas extracted from the reactor vessel back to the reactor.
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Inventors:
EYER ANDREW (US)
STROMBERG BERTIL (US)
RAWLS JOSEPH MONROE (US)
GREENWOOD BRIAN F (US)
STROMBERG BERTIL (US)
RAWLS JOSEPH MONROE (US)
GREENWOOD BRIAN F (US)
Application Number:
PCT/US2012/044657
Publication Date:
February 21, 2013
Filing Date:
June 28, 2012
Export Citation:
Assignee:
ANDRITZ INC (US)
EYER ANDREW (US)
STROMBERG BERTIL (US)
RAWLS JOSEPH MONROE (US)
GREENWOOD BRIAN F (US)
EYER ANDREW (US)
STROMBERG BERTIL (US)
RAWLS JOSEPH MONROE (US)
GREENWOOD BRIAN F (US)
International Classes:
C10L5/44; C10L9/08
Domestic Patent References:
| WO2012024314A1 | 2012-02-23 |
Foreign References:
| US20100242351A1 | 2010-09-30 | |||
| US20100083530A1 | 2010-04-08 | |||
| US3742735A | 1973-07-03 |
Attorney, Agent or Firm:
NELSON, Jeffry, H. (901 North Glebe Road 11th Floo, Arlington VA, US)
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