Ehp. Wolff et al., ATTRITION OF AN ALUMINATE-BASED SYNTHETIC SORBENT FOR REGENERATIVE SULFUR CAPTURE FROM FLUE-GAS IN A FLUIDIZED-BED, Powder technology, 76(1), 1993, pp. 47-55
Attrition tests have been performed on an aluminate-based synthetic so
rbent intended for regenerative sulphur capture from flue gas in a flu
idised bed coal combustor. A comparison with lime(stone) has also been
made. Single-particle crushing strength tests have been used to inves
tigate the role of breakage caused by static mechanical stress, while
impact tests have been applied to study kinetic stress. Multi-particle
fluidised bed tests have been used to examine attrition by thermal sh
ock (thermal stress), coal combustion (thermal and chemical stress) an
d fluidisation (kinetic stress) independently. The attrition resistanc
e of the synthetic sorbent is much higher than that of lime(stone). It
appears however that the effect of coal combustion on sorbent attriti
on needs further research. The morphology of the sorbents is only slig
htly affected by the various tests mentioned above.