Combustion of 32PC68RDF without limestone, when SO2
concentration was not reduced, revealed details of alkali
chloride capture by aluminosilicates and sulfur. At lee-side,
strong chlorine deposition occurred with weak Al, Si and S
deposition. At 50- up, instead, deposition of S, Al and Si was
relatively strong, while Cl deposition was weak suggesting
simultaneous alkali aluminosilicates formation and sulfation
with high SO2 concentration in flue gas (600 mg/N m3).
Scale-up results from 100 kW to 4 MW are shown in Fig.
10, where depositions during combustion of similar feedstocks
to lee and wind-sides at 500 -C are compared. Chlorine
deposition to wind-side tended to be stronger in the 4 MW than
in the 100 kW CFB reactor, even though chlorine concentration
was lower in the feedstocks fired in the 4 MW CFB. However,
Al and Si concentration in the wind-side tended to be higher in
the 100 kW CFB.
Combustion of 32PC68RDF without limestone, when SO2
concentration was not reduced, revealed details of alkali
chloride capture by aluminosilicates and sulfur. At lee-side,
strong chlorine deposition occurred with weak Al, Si and S
deposition. At 50- up, instead, deposition of S, Al and Si was
relatively strong, while Cl deposition was weak suggesting
simultaneous alkali aluminosilicates formation and sulfation
with high SO2 concentration in flue gas (600 mg/N m3).
Scale-up results from 100 kW to 4 MW are shown in Fig.
10, where depositions during combustion of similar feedstocks
to lee and wind-sides at 500 -C are compared. Chlorine
deposition to wind-side tended to be stronger in the 4 MW than
in the 100 kW CFB reactor, even though chlorine concentration
was lower in the feedstocks fired in the 4 MW CFB. However,
Al and Si concentration in the wind-side tended to be higher in
the 100 kW CFB.
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