Fluidized bed combustion of petroleum coke coagglomerated with sulphur sorbents

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TypeArticle
Journal titleFuel
Volume68
Issue5
Pages581585; # of pages: 4
Subjectcombustion; fluidized beds; sulphur
AbstractThe relatively high sulphur content of coke produced during the upgrading of Athabasca bitumen. makes it environmentally unsuitable as a fuel. Using heavy oil or bitumen as a binder, attempts have been made to coagglomerate these cokes with sulphur dioxide capture agents, such as lime, hydrated lime and limestone, to reduce emissions during combustion. By providing an environment in which there is intimate contact between fuel and sorbent, it was hoped that greater utilization of the sorbent could be achieved, compared with the systems in which the sorbent is added separately to the combustion bed. Cokes from both Suncor and Syncrude operations were used in this investigation. The combustion tests on coke-sorbent agglomerates were carried out in a bench scale fluidized bed apparatus at 850°C. Test results indicated sulphur capture of over 60 wt y0 for Syncrude coke and over 50 wt y0 for Suncor coke at a calcium to sulphur molar ratio of 1:l. The presence of moisture did not appear to have any significant effect on sulphur capture. Other variables investigated included: the role of binder, the effect of coke size and calcium to sulphur mole ratio. A comparison was made of the efficiency of the various sulphur sorbents in the reduction of sulphur dioxide emissions.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number30017
NPARC number16030782
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Record identifier63a9abdb-c764-4315-85c8-112a311ea172
Record created2010-09-03
Record modified2016-05-09
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