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Description:
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Petroleum coke or petcoke , a refinery byproduct , has generally been considered as an
unusable byproduct because of its high sulfur content . However energy industries now
view petcoke as a potential feedstock for power generation because it has higher carbon
content than other hydrocarbons like coal , biomass and sewage residue . This gives
petcoke a great edge over other feedstocks to generate power . Models for the two most
common processes for power generation , namely combustion and gasification , were
developed using Aspen Plus steady state chemical process simulator . Overall plant
layouts for both processes were developed by calculating the heat and mass balance of
the unit operations . After conducting wide sensitivity analysis , results indicate that one
ton of petcoke feedstock can generate up to 4 MW of net available power . Both
processes have rates of return greater than 30 % , although gasification offers a slightly
more attractive opportunity than combustion . |