A 1000 MWth boiler for chemical-looping combustion of solid fuels - Discussion of design and costs
Journal article, 2015

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.

CO2 capture

Solid fuel

Chemical-looping combustion

Circulating fluidized bed

Author

Anders Lyngfelt

Chalmers, Energy and Environment, Energy Technology

Bo G Leckner

Chalmers, Energy and Environment, Energy Technology

Applied Energy

0306-2619 (ISSN)

Vol. 157 475-487

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

European Commission (FP7), 2012-03-01 -- 2017-02-28.

Subject Categories

Energy Engineering

DOI

10.1016/j.apenergy.2015.04.057

More information

Created

10/7/2017