(Development and Application of Circulating Fluidized Bed Gasification of Biomass)

Sino-Danish Strategic Research Cooperation within sustainable and renewable energy

The main objective of this project is to develop a new type of circulating fluidized bed (CFB) biomass gasifier, which can produce either hydrogen rich synthetic gas at high temperature or liquid dominant products at relatively low temperature. The main focus will put in the following aspects:

  1. To study transformation of inorganic compounds present in biomass at gasification conditions, especially the release behavior of alkali compounds and their potential risk for formation of agglomerates in the CFB system to gain knowledge to reduce this risk.

  2. To develop a model for describing the hydrodynamics and reactions in the CFB biomass gasifier for up-scaling.

The project is funded by Innovation Fund Denmark (formerly funded by The Danish Council for Technology and Innovation) in the framework of Sino-Danish Strategic Research Cooperation and will have a close collaboration with the Chinese partner, Institute of Process Engineering, Chinese Academy of Sciences, which is funded by the Ministry of Science and Technology (MOST) of China. The results will form a basis for the design and construction of a demo-scale CFB biomass gasification system. 

Progress of the project:

  • A comprehensive literature review has been conducted on agglomeration phenomena in fluidized bed at high temperature covering gasification and combustion of biomass.
  • The release of inorganic ingredients in biomass to gas phase has been investigated in a fixed bed reactor at gasification conditions and compared with the results at combustion conditions.
  • Agglomeration experiments are performed in a lab-scale fluidized bed reactor to study the agglomeration tendency of different types of biomass at gasification conditions.
  • A model is developed to describe the tar formation in gasification of biomass in fluidized beds.
  • CDF modeling is applied to simulate the hydrodynamics of a fluidized bed and compared with experimental data from the Chinese partner.
  • The interactions between the typical model compounds of biomass ash and bed materials are investigated experimentally to reveal the detailed mechanisms of agglomeration in fluidized beds.


DTU Project Staff

Kim Dam-Johansen
Professor, Institutdirektør
DTU Kemiteknik
45 25 28 45
Peter Arendt Jensen
DTU Kemiteknik
45 25 28 49
Hao Wu
DTU Kemiteknik
45 25 29 27