Untersuchung stationärer und dynamischer Vorgänge bei der Teerentstehung in Biomassevergasern und Gasreinigungen mit Hilfe der kontinuierlichen Teeranalyse (English shop)

Preview

Table of Contents, Datei (38 KB)
Extract, Datei (71 KB)

This dissertation investigates tar formation and removal during the thermochemical gasification of biomass. Tar-containing compounds represent a major challenge for the efficient operation of biomass gasification systems because they can cause deposits, interfere with downstream equipment, and limit the utilization of the resulting producer gas.

The research focuses on the development and improvement of a continuous tar analyzer for the near-real-time determination of tar concentrations in producer gases. The measurement principle is based on determining the difference in total hydrocarbon content before and after the removal of condensable tar compounds using a flame ionization detector. The developed system enables the investigation of dynamic changes during gasification and the assessment of different gas cleaning technologies.

Experimental investigations are conducted on fixed-bed, fluidized-bed, and multistage gasifiers at laboratory, pilot, and industrial scales. In addition to tar formation, the study evaluates several tar reduction techniques, including gas scrubbing, catalytic tar cracking, and plasma treatment. Comparative measurements using established analytical methods are performed to assess the performance of the continuous monitoring system. The findings provide valuable insights into optimizing biomass gasification processes and improving producer gas quality.