Paper details

Title:

Chemical-Looping Combustion of Biomass in a 100 kW Pilot

Author(s):

Linderholm, C., Lyngfelt, A., Rydén, M., Schmitz, M.

Document(s):

Abstract:

Chemical-looping combustion (CLC) is an innovative carbon-capture technology with potential to drastically reduce the cost of capture. By using a circulating bed material to transfer oxygen from the combustion air to the fuel, air and fuel are never mixed and the CO2 can be obtained as a separate flue gas stream, undiluted by N2. In other words, in contrast to other capture technologies, which are burdened with a significant energy penalty, carbon capture is inherent to the CLC process. Chemical-looping combustion of biomass in combination with carbon capture and storage would lead to so called negative emissions. Manganese ores are highly promising oxygen-carrier candidates due to high reactivity and high availability. Here, we present findings from a 100 kW chemical-looping combustor for solid fuels, using a sintered manganese ore called “Sinaus” as oxygen carrier and two kinds of wood pellets as fuel. Preliminary results from 6 h of operation with steam-exploded wood pellets show fuel conversion up to 75%, and essentially complete CO2 capture. The expected lifetime of the oxygen carrier particles was found to be 100-400 hours.

Keywords:

boiler, CO₂ capture, circulating fluidized bed (CFB)

Topic:

Biomass Conversion Technologies for Heating, Cooling and Electricity

Subtopic:

Biomass Combustion in Large Utilities

Event:

25th European Biomass Conference and Exhibition

Session:

2AO.8.4

Pages:

412 - 415

ISBN:

978-88-89407-17-2

Paper DOI:

10.5071/25thEUBCE2017-2AO.8.4

Price:

FREE