Tar removal from low-temperature gasifiers

Biomass is considered an important source of renewable energy needed to realise national and European renewable energy goals and goals for CO2 reduction. Biomass gasification as a technology is recognized generally as highly desirable because of its high efficiency towards all kind of energy products. Biomass can be gasified using many different technologies ranging from high-temperature processes as high as 1500°C to low-temperature processes as low as 500°C. This project focuses at gasification processes below 800°C. These so-called low-temperature biomass gasification processes have the following ad-vantages: - suitable for fuels with low ash melting points, - high cold gas efficiency, - low tar dew point, - easier gas cooling and cleaning, - longer residence times, - less heat transfer limitations within gasifier. In this project, two gas cleaning technologies will be adapted and tested in con-nection to low-temperature gasification: - OLGA, - cooling, filtration and partial oxidation. This project aims at judging technical and economical suitability of these up-scalable tar removal methods connected to high-efficiency low-temperature gasification. Suitability opens the way to high efficient and high fuel flexible biomass gasification systems for the connection to gas engines, gas turbines, fuel cells or catalytic synthesis gas reactors