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Centre for Energy and Resource Technology: Circulating Fluidised Bed Combustor / Gasifier & Hot Gas Filtration Unit Centre for Energy and Resource Technology School of Applied Sciences, Cranfield University, Bedfordshire, MK43 0AL, UK. www.cranfield.ac.uk/sas/ energyresourcetechnology • 800 – 1000 °C • 300 kWth • Atmospheric pressure • Gas analysis • Temperature monitoring • Heat & mass balance Rig Uses Specification Fuels •Coal This rig can be operated either as a circulating fluidised bed combustor (CFBC) or a circulating fluidised bed gasifier (CFBG): •CFBC enables studies of both air- & oxy- fired combustion of various fuels. •CFBG produces syngas (synthesis gas) from various fuels which can be cleaned and used in gas engines. Different gas cleaning methods exist for CFBG: •Using a hot gas filtration unit (HGFU), particles can be removed at high temperatures •Using a heat exchanger allows low temperature particle removal. Schematic: CFBC O 2 , air Coal, biomas s Char collection pots Fan Fan Gas clean up C y c l o n e C y c l o n e C y c l o n e H e a t e x c h a n g e r Vent Flue gas recycle if oxy-firing C i r c u l a t i n g f l u i d i s e d b e d c o m b u s t o r Gas Gas Gas P a r t i c u l a t e s Schematic: CFBG O 2 , H 2 O, air Coal, biomas s Fan Gas clean up H o t g a s f i l t r a t i o n u n i t C y c l o n e Vent C i r c u l a t i n g f l u i d i s e d b e d c o m b u s t o r Gas P a r t i c u l a t e s Trace heating H e a t e x c h a n g e r H e a t e x c h a n g e r Particl e removal Gas engines Char collecti on pot Flare •Biomass
