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A 1000 MWth boiler for chemical-looping combustion of solid fuels - Discussion of design and costs

Anders Lyngfelt (Institutionen för energi och miljö) ; Bo Leckner (Institutionen för energi och miljö)
Applied Energy (0306-2619). Vol. 157 (2015), p. 475-487.
[Artikel, refereegranskad vetenskaplig]

More than 2000 h of solid-fuel CLC operation in a number of smaller pilot units clearly indicate that the concept works. A scale-up of the technology to 1000 MWth is investigated in terms of mass and heat balances, flows, solids inventories, boiler dimensions and the major differences between a full-scale Circulating Fluidized-Bed (CFB) boiler and a Chemical-Looping Combustion CFB (CLC-CFB). Furthermore, the additional cost of CLC-CFB relative to CFB technology is analysed and found to be 20 (sic)/tonne CO2. The largest cost is made up of compression of CO2, which is common to all capture technologies. Although the need for oxygen to manage incomplete conversion is estimated to be only a tenth of that of oxy-fuel combustion, oxygen production is nonetheless the second largest cost. Other significant costs include oxygen-carrier material, increased boiler cost and steam for fluidization of the fuel reactor.

Nyckelord: Chemical-looping combustion, CO2 capture, Circulating fluidized bed, Solid fuel



Denna post skapades 2015-12-07. Senast ändrad 2016-08-15.
CPL Pubid: 227433

 

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Institutioner (Chalmers)

Institutionen för energi och miljö

Ämnesområden

Kemisk energiteknik

Chalmers infrastruktur

 


Projekt

Denna publikation är ett resultat av följande projekt:


Novel combustion principle with inherent capture of CO2 using combined manganese oxides that release oxygen (NOCO2) (EC/FP7/291235)