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Title:
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Benzene and ethylene in bio-SNG production: nuisance, fuel or valuable products?
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Author(s):
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Published by:
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Publication date:
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ECN
Biomass, Coal and Environmental Research
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2-11-2011
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ECN report number:
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Document type:
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ECN-M--11-092
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Conference Paper
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Number of pages:
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Full text:
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34
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Download PDF
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Abstract:
Gasification of biomass with the aim to produce Substitute Natural Gas (SNG) is best performed at temperatures around 850°C, where 50% of the combustion value of the producer gas is concentrated in hydrocarbons. After removal of the heavy hydrocarbons (i.e. tar) and sulphur components, the producer gas can be converted catalytically to a mixture of mainly methane, carbon dioxide and water. Using producer gas as intermediate instead of syngas can lead to 10% higher efficiency, as producer gas does contain a significant amount of methane already and because less heat is evolved in the conversion of the remainder than for a mixture of carbon monoxide and hydrogen.
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