Title:
Entrained Flow Gasification of Coal and Biomass Char Using a Superheated Steam Flame
Author(s):
Lakey, T.E., Sharifi, V.N., Swithenbank, J.
Document(s):
Paper
Slide presentation
Abstract:
Biomass gasification has previously been shown to produce sustainable hydrogen rich syngas for power generation or chemical synthesis. Steam flames have the potential to combine very fast reaction rates with a reducing environment, to produce clean syngas within a short residence time. This work demonstrates the effectiveness of steam flames for rapid feedstock conversion of two high carbon feedstocks. A small scale entrained flow gasifier was used to compare gas yields from coal and a softwood biomass char with a high (~15%wt) ash content, which was produced as an industrial gasification by-product. It was found that the biomass char yielded higher concentrations of H2 and CO in the product gas than the coal; considered to result from the higher reactivity of biomass char compared to coal. The biochar achieved high conversion in a single pass, while coal conversion was limited by the small size of the experimental reactor. No traces of tar deposition were detected on any apparatus when using coal or biomass char, and no ash sintering was observed in the high ash samples.
Keywords:
coal, gasification, steam, waste, biochar
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for power, CHP and polygeneration
Event:
24th European Biomass Conference and Exhibition
Session:
2BO.6.3
Pages:
506 - 511
ISBN:
978-88-89407-165
Paper DOI:
10.5071/24thEUBCE2016-2BO.6.3
Price:
FREE
