EP 2126008 A2 20091202 - THREE-STAGE GASIFIER, FIXED BED, WHICH HAS BUFFER ZONE OF GASEOUS FLOW BETWEEN PYROLYSIS ZONE AND COMBUSTION ZONE
Title (en)
THREE-STAGE GASIFIER, FIXED BED, WHICH HAS BUFFER ZONE OF GASEOUS FLOW BETWEEN PYROLYSIS ZONE AND COMBUSTION ZONE
Title (de)
DREISTUFIGER VERGASER, FESTBETT, MIT EINER GASSTROM-PUFFERZONE ZWISCHEN DER PYROLYSEZONE UND DER VERBRENNUNGSZONE
Title (fr)
GAZOGÈNE À TROIS PHASES ET LIT FIXE, QUI COMPREND UNE ZONE TAMPON DU COURANT GAZEUX ENTRE LA ZONE DE PYROLYSE ET LA ZONE DE COMBUSTION
Publication
Application
Priority
- GR 2008000017 W 20080304
- GR 2007000017 W 20070306
Abstract (en)
[origin: WO2008107727A2] At the upper place of the gasifier exists the first stage which is the pyrolysis zone (1) and it is a countercurrent reactor. At the middle place exists the second stage which is the combustion zone (2). At the bottom place exists the third stage which is the gasification zone (3) and it is a cocurrent reactor. Figure 1 shows the normal operation of the buffer zone (20) and figure 2 shows the reversed operation of the buffer zone (20). The three-stage gasifier is characterized from the fact that the passage from the normal operation of the buffer zone (20) to the reversed operation of the buffer zone (20) and vice versa is achieved only by proper rotation settings of the pumps (BPA), (BCA), (BPG), (BGO), so creating a new model of gaseous flow management between the three stages of the gasifier. This model can achieve the simultaneous combination of the following advantages: -Industrial scale safe operation ability, by using fuel with big possible variations in humidity and/or composition. -The producer gas is free of harmful components (tars, dioxins). -The gasifier does not expose its moving mechanical parts at temperatures above 750°C. -There is not any moving seal mechanism between the stages of the gasifier.
IPC 8 full level
CPC (source: EP)
C10J 3/20 (2013.01); C10J 3/26 (2013.01); C10J 3/721 (2013.01); C10J 2200/09 (2013.01); C10J 2300/0916 (2013.01); C10J 2300/0956 (2013.01); C10J 2300/1207 (2013.01); C10J 2300/1215 (2013.01); C10J 2300/1223 (2013.01); Y02P 20/129 (2015.11)
Citation (search report)
See references of WO 2008107727A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2008107727 A2 20080912; WO 2008107727 A3 20081120; EP 2126008 A2 20091202
DOCDB simple family (application)
GR 2008000017 W 20080304; EP 08719101 A 20080304