Biomass gasification gas cleaning

journal article - other

English

The significance of energy use of biomass as a renewable energy source keeps on growing and so does the significance of finding new ways of transformation. Being one of the forms of biomass conversion, thermal gasification has for years been in the focus of interest of expert public. The gas produced in the process of gasification can be used either by burning it directly in a steam boiler, combustion engine, or a gas turbine, or it can be used for separation of hydrogen and consequent use in fuel cells. Use of the gas generated in the course of biomass gasification in other processes is limited by the efficiency of its cleaning from impurities and admixtures. Track is kept, above all, of the content of dust, tar and sulphur and chlorine compounds. The methods of gas cleaning are numerous, starting from those applied directly in the fluidized bed of the gasification generator via wet scrubbing up to thermal and catalytic methods in secondary reactors. The present article deals with the results of research into the cleaning of gas coming from atmospheric fluidised bed gasifier. Our institute has experience from both the primary measures reducing tar production and the methods using lime and metallic catalysts to reduce tar in gas in a secondary bed. It also includes methods and results of measurements taken during long-term activities involving pilot atmospheric fluidised bed gasifier BIOFLUID 100. Investigation was undertaken in particular into the impact of operating conditions of individual catalysts on the composition and heat value of the gas and also on the residual amounts of tar in the gas and its make-up.

biomass, tar reduction, catalysts

BALÁŠ, M.; LISÝ, M.

2010

20. 8. 2010

Bratislava

1337-9089

ERIN 3

3

2

Slovak Republic

32

39

8