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The use of petroleum coke as fuel in chemical-looping combustion

Henrik Leion (Institutionen för kemi- och bioteknik, Oorganisk miljökemi ; Institutionen för energi och miljö, Energiteknik) ; Tobias Mattisson (Institutionen för energi och miljö, Energiteknik) ; Anders Lyngfelt (Institutionen för energi och miljö, Energiteknik)
Fuel (0016-2361). Vol. 86 (2007), 12-13, p. 1947-1958.
[Artikel, refereegranskad vetenskaplig]

Chemical looping combustion is a novel technique used for CO2 separation that previously has been demonstrated for gaseous fuel. This work demonstrates the feasibility of using solid fuel (petroleum coke) in chemical-looping combustion (CLC). Here, the reaction between the oxygen carrier and solid fuel occurs via the gasification intermediates, primarily CO and H2. A laboratory fluidized-bed reactor system for solid fuel, simulating a CLC-system by exposing oxygen-carrying particles to alternating reducing and oxidizing conditions, has been developed. In each reducing period, 0.2 g of petroleum coke was added to 20 g of oxygen carrier composed of 60% active material of Fe2O3 and 40% inert MgAl2O4. The effect of steam and SO2 concentration in the fluidizing gas was investigated as well as effect of temperature. The rate of reaction was found to be highly dependent on the steam and SO2 concentration as well as the temperature. Also shown was that the presence of a metal oxide enhances the gasification of petroleum coke. A preliminary estimation of the oxygen carrier inventory needed in a real CLC system showed that it would be below 2000 kg/MWth.

Nyckelord: Chemical-looping combustion, Petroleum coke, Oxygen carrying particles

Denna post skapades 2007-05-30. Senast ändrad 2017-10-03.
CPL Pubid: 42256


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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)
Institutionen för energi och miljö, Energiteknik (2005-2017)



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