C - Chemistry – Metallurgy – 10 – B
Patent
C - Chemistry, Metallurgy
10
B
C10B 7/10 (2006.01) C07C 29/00 (2006.01) C10B 23/00 (2006.01) C10B 47/44 (2006.01) C10B 53/02 (2006.01) F02B 43/08 (2006.01) F02B 45/08 (2006.01)
Patent
CA 2303795
This invention relates to a new continuous method of pyrolysis of wood chips or compacted cellulosic materials in the absence of oxygen. Positive displacement of chips, by means of a screw conveyor, brings them into contact, in a countercurrent manner, with the newly formed reactants, which are cooled instantaneously, as they are withdrawn from the reactor. Heating of the charge is thus partially affected. The fast removal of methanol from the pyrolysis zone and its subsequent cooling by the chips prevents its decomposition .Final heating of the charge is done by means of hot internal combustion engine exhaust gases, which are passed through the jacket surrounding the screw conveyor. The partially cooled exhaust gases are,then contacted with the chips in the preheater in a countercurrent manner, before being exhausted into the atmosphere.
Na
Todorski Zenon
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