Global Patent Index - EP 1099084 A1

EP 1099084 A1 2001-05-16 - REACTOR FOR WOOD RETIFICATION

Title (en)

REACTOR FOR WOOD RETIFICATION

Title (de)

HOLZBEHANDLUNGSANLAGE

Title (fr)

REACTEUR DE RETIFICATION DU BOIS

Publication

EP 1099084 A1 (FR)

Application

EP 99931345 A

Priority

  • FR 9901718 W
  • FR 9809252 A

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 (main, further and additional classification)

F26B 7/00; F26B 21/06

IPC 8 full level (invention and additional information)

F26B 7/00 (2006.01); F26B 9/06 (2006.01); F26B 21/08 (2006.01)

CPC (invention and additional information)

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 50/15 (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

EPO simple patent family

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

INPADOC legal status


2003-06-18 [18W] APPLICATION WITHDRAWN

- Effective date: 20030418

2002-09-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020717

2001-05-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010219

2001-05-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-05-16 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI