Sorption enhanced chemical-looping (SE-CLR) for hydrogen production was modified.
Corn stover was used to convert into bio-oil by pyrolysis prior to SE-CLR reforming.
Splitting a fraction of NiO & CaO to feed directly back to reformer was examined.
Fractioning solid streams flow directly to reformer can improve H2 yield and purity.
Splitting solid circulation streams can broaden process operating window.