Institut für Verfahrenstechnik, Umwelttechnik und Techn. Biowissenschaften
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Clean Bio Syngas

Wir bitten um Verständnis, dass die Informationen über dieses Projekt derzeit nur in englischer Sprache verfügbar sind.


The gasification of biomass represents an attractive technology with a large potential for production of combined heat and power as well as for the production of synthesis gas to be upgraded to gaseous and liquid energy source (Fischer-Tropsch Diesel, substitute natural gas - SNG). Although a great deal of research and development work has been carried out during the past decade the problem of tars in the producer gas is still unsolved. Caking and blockings can occur due to condensation of tars in the colder parts of the plant downstream of the gasifier. Catalytic hot gas cleaning is, in comparison to other gas cleaning processes, promising because of the complete destruction of the tars instead of creating a waste stream.

The aim of this project is to perform long term tests of catalytic gas cleaning with real producer gas from an industrial dual fluidized bed biomass steam gasifier using a two stage steam reformer (100Nm³/h).


Fig. 1 Two stage catalytic steam reformer installed at the CHP Güssing

The principal suitability of this process has already been demonstrated within several investigations. Prior to the application of this technology in existing and future gasification plants the proof long term appropriateness has to be provided. This proof shall be provided within this submitted project by a comprehensive measurement program with the gasification products of the biomass gasification plant in Guessing.

Tars (condensable hydrocarbons) have to be removed for the production of BioSNG. Methane (CH4), produced in the gasifier (10-15vol% of the producer gas), which is a valuable product ought not to be reformed. The situation is the other way round for the production of Fischer-Tropsch liquids: all hydrocarbons – especially Methane – have to be reformed. Thus, a further aim of this project is to find a catalyst respectively process parameters, which reforms all the tars and either selectively all or no Methane.

Sampling and measurement of producer gas (gas composition, tar values and composition etc.) is a major issue. Sampling at temperatures of 900°C before and after the reformer has been successfully accomplished with the adapted method and equipment. Moreover, the adaptations of the plant (heating of the catalysts, change of the control system etc.) have been finished. First tests started in Summer 2011.

Industrial Partners & Financial Support



Univ.Prof. Dipl.-Ing. Dr.techn. Hermann Hofbauer

Projekt Mitarbeiter:

Christoph Varga

Christoph Pfeifer


Abgeschlossen, Endbericht publiziert