Title:
Experimental Investigation of Air-Blown Cyclone Gasification of Different Biomasses
Author(s):
Risberg, M., Öhrman, O.G.W., Gebart, B.R.
Document(s):
Paper
Abstract:
In Sweden there are many possible sites for small and medium scale combined heat and power (CHP) plants for district heating and power to the grid. One suitable technique for small scale CHP up to about 20 MW thermal is cyclone gasification of biomass powder which can produce a gas with medium heating value. The purpose of this work was to assess the fuel flexibility of cyclone gasification by doing tests with different types of fuels. The experiments were done in a 500 kWth pilot gasifier with a 3¬step gas cleaning consisting of a multi¬cyclone for removal of coarse particles, a bio¬scubber for cooling and tar removal and a wet electrostatic precipitator for removal of fine particles and droplets from the oil scrubber (aerosols). The fuels that were studied were torrefied spruce, peat, rice husk and bark. All of the fuels were dried to below 15% moisture content and milled to a powder with a maximum particle size of around 1 mm. With a fuel load of 400 kW and an equivalence ratio 0.27, except for torrefied where it was 0.2 the lower heating value obtained was 5.75, 4,07, 4.51 and 4.84 MJ/Nm3 for torrefied, peat, rice husk and bark respectively.
Keywords:
bark, combined heat and power generation (CHP), gasification, peat, rice husks, torrefaction
Topic:
R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Gasification for power, CHP and polygeneration
Event:
20th European Biomass Conference and Exhibition
Session:
2BV.2.7
Pages:
1021 - 1025
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-2BV.2.7
Price:
FREE
