The Viking gasification plant at the Technical University of Denmark was built to demonstrate a continuous combined heat and power operation of a two-stage gasifier fueled with wood chips. The nominal input of the gasifier is 75 kW thermal. To validate the continuous operation of the plant, a 9-day measurement campaign was performed. The campaign verified a stable operation of the plant, and the energy balance resulted in an overall fuel to gas efficiency of 93% and a wood to electricity efficiency of 25%. Very low tar content in the producer gas was observed: only 0.1 mg/Nm3 naphthalene could be measured in raw gas. A stable engine operation on the producer gas was observed, and very low emissions of aldehydes, N2O, and polycyclic aromatic hydrocarbons were measured.
Ahrenfeldt, J., Henriksen, U. B., Jensen, T. K., Gøbel, B., Wiese, L., Kather, A., & Egsgaard, H. (2006). Validation of Continuous CHP Operation of a Two-Stage Biomass Gasifier. Energy & Fuels. https://doi.org/10.1021