EP 1099084 A1 20010516 - REACTOR FOR WOOD RETIFICATION
Title (en)
REACTOR FOR WOOD RETIFICATION
Title (de)
HOLZBEHANDLUNGSANLAGE
Title (fr)
REACTEUR DE RETIFICATION DU BOIS
Publication
Application
Priority
- FR 9901718 W 19990713
- FR 9809252 A 19980717
Abstract (en)
[origin: FR2781180A1] The gas-tight reactor chamber, rectangular in section, has entries at either end, through sealable doors, for trolleys piled with layers of woody material, successive layers being separated by wood or metal battens to encourage gas circulation. Fragmented material like sawdust is first consolidated, e.g. as briquettes. Trolleys are inserted alternately; while one undergoes the treatment cycle the other is being loaded outside the opposite door. In the reactor the load is subjected to constant compression by hydraulic rams (9) acting on pressure plates - opt., by springs on the trolleys. The atmosphere is rendered inert (max 3%) oxygen) by injected nitrogen, and electrically heated by resistor banks, while circulation through the load is effected by ceiling fans (17) powered by external motors (10). To promote even heating, the circulating gas flows are regularly (e.g. every 5 minutes) reversed by shutters (18,19) mounted on pivots (20). Before recirculating, gases are passed through coolers where water, methanol, acids, etc. extracted from the wood are removed as condensates. This also serves to reduce load temperatures during cooling phases. Optionally, the chamber is cooled by cold air within double-skinned walls. In a variant designed for continuous operation, loads pass successively through 5 chambers dedicated to specific cyclic functions.
IPC 1-7
IPC 8 full level
F26B 7/00 (2006.01); F26B 9/06 (2006.01); F26B 21/08 (2006.01)
CPC (source: EP)
C10L 9/083 (2013.01); F26B 7/00 (2013.01); F26B 9/06 (2013.01); F26B 21/086 (2013.01); F26B 2210/16 (2013.01); Y02E 50/10 (2013.01)
Citation (search report)
See references of WO 0004328A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
FR 2781180 A1 20000121; FR 2781180 B1 20000929; AU 4789399 A 20000207; BR 9912160 A 20011211; CA 2337357 A1 20000127; EP 1099084 A1 20010516; WO 0004328 A1 20000127
DOCDB simple family (application)
FR 9809252 A 19980717; AU 4789399 A 19990713; BR 9912160 A 19990713; CA 2337357 A 19990713; EP 99931345 A 19990713; FR 9901718 W 19990713