Method for processing pulverized solid fuel
A method is disclosed for processing a pulverized solid fuel by heat, which comprises the steps of drying said fuel and subjecting the latter to two-stage pyrolysis with the resulting formation of vapor, gaseous products and small coke. According to the invention, at least a part of the small coke is additionally heated to a temperature of 800 to 1500/sup 0/C by combustion gas and/or by partial burning of the small coke, whereafter the heated small coke is separated from the combustion gas, fed to the first stage of pyrolysis and for drying the fuel. The heated small coke is gasified by steam. The resultant gasification products are separated from the small coke which is then fed as the heat carrier to the first stage of pyrolysis.
- Assignee:
- IFI; EDB-82-063754
- Patent Number(s):
- US 4309197
- OSTI ID:
- 5666227
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404 -- Coal
Lignite
& Peat-- Gasification
010406* -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
AIR POLLUTION CONTROL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COKE
COMMINUTION
CONTROL
DECOMPOSITION
DISPERSIONS
DRYING
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASIFICATION
MATERIALS
POLLUTION CONTROL
PYROLYSIS
SEPARATION PROCESSES
SOLID FUELS
STEAM
SUSPENSIONS
THERMOCHEMICAL PROCESSES
VERY HIGH TEMPERATURE