Abstract：
:Bagasse is utilized as fuel in the biggest biomass power plant of China, however, alkalis in the fuel created severe agglomeration and slagging problems. Alkalis transfer characteristic, agglomeration causes in engineering practice, additive improvement effects and mechanism during bagasse combustion were investigated via experiments and simulations. Only slight agglomeration occurs in ash higher than 800°C. Serious agglomeration in practical operation should be attributed to the gaseous alkalis evaporating at high temperature and condensing on the cooler grain surfaces in CFB. It can be speculated that ash caking can be avoided with temperature lower than 750°C and heating surface corrosion caused by alkali metal vapor can be alleviated with temperature lower than 850°C. Kaolin added into the bagasse has an apparent advantage over CaO additive both in enhancing ash fusion point and relieving alkali-chloride corrosion by locking alkalis in dystectic solid compounds over the whole temperature range.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Liao Y,Cao Y,Chen T,Ma Xdoi
10.1016/j.biortech.2015.06.121subject
Has Abstractpub_date
2015-10-01 00:00:00pages
196-204eissn
0960-8524issn
1873-2976pii
S0960-8524(15)00912-8journal_volume
194pub_type
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