EP 0971017 A2 20000112 - Process and apparatus for gasifying a solid fuel in lump form
Title (en)
Process and apparatus for gasifying a solid fuel in lump form
Title (de)
Verfahren und Vorrichtung zur Vergasung eines in stückiger Form vorliegenden festen Brennstoffs
Title (fr)
Procédé et appareil pour la gazéification d'un combustible solide sous forme de morceaux
Publication
Application
Priority
DE 19830765 A 19980709
Abstract (en)
The low calorific gas arising from carbonization is heated in a cracker reactor (II) to T2 such that long chain and/or (poly)cyclic hydrocarbon compounds are thermally-cracked. An Independent claim is included for the corresponding gasification plant. Preferred Features: Heating is indirect and no oxidant is supplied. The char is oxidized in a combustion reactor, releasing energy to heat the fuel. Water is supplied to the gasifier. T2 is 600 degrees C or more, preferably 800 degrees C-1000 degrees C. Fuel in the gasifier is heated by a heat exchanger surface. Fuel is oxidized in a separate reactor from the gasifier. The cracker is inside the combustor, which is inside the gasifier reactor. The cracker has the form of a tubular spiral. Gasifier and combustor form a unit, with the fuel moving under gravity. Gas leaving the combustor rises into the adjacent cracker which shares a common wall with the combustor, near a combustion zone. The combustor has a conveying unit below, taking fuel in to the side, beneath the cracker. Heat exchanger surfaces in the cracker are provided with catalytic substances.
Abstract (de)
Bei einem Verfahren zur Vergasung eines in stückiger Form vorliegenden festen Brennstoffs zu einem brennbaren Schwachgas wird der Brennstoff in einem Entgasungsreaktor auf eine solche Temperatur T1 erhitzt, daß eine mit seiner Pyrolyse einhergehende Vergasung erfolgt. Um ein von teerartigen Substanzen freies Schwachgas zu erhalten, das ohne weitere Reinigungsschritte einem Verbrennungsmotor zuführbar ist, wird vorgeschlagen, daß das entstehende Schwachgas in einem Nachbehandlungsreaktor auf eine solche Temperatur T2 erhitzt wird, daß in dem Schwachgas enthaltene langkettige und/oder (poly)zyklische Kohlenwasserstoffverbindungen thermisch aufgespalten werden. <IMAGE>
IPC 1-7
IPC 8 full level
C10J 3/64 (2006.01)
CPC (source: EP)
C10J 3/64 (2013.01); C10K 3/008 (2013.01); C10J 2300/092 (2013.01); C10J 2300/0973 (2013.01); C10J 2300/1246 (2013.01)
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)
EP 0971017 A2 20000112; EP 0971017 A3 20000315; DE 19830765 A1 20000113
DOCDB simple family (application)
EP 99112863 A 19990703; DE 19830765 A 19980709