One alternative method for small scale combined heat and power production is to develop technologies based on external gas turbines.
Possible methods to avoid ash deposition (fouling) on heat exchanger surfaces is to use a process based on two-step biomass combustion where the first step consists of an up-draft gasifier or to optimize existing grate firing technologies/-processes.
The objectives with this project are therefore to determine if the producer gas from; i) biomass driven up-draft gasification (phase 1)- and, ii) optimized grate firing appliances (phase 2) contains so low amounts of alkali that problems with fouling of heat exchangers or gas turbines could be avoided.
Funding: Swedish Energy Agency
Project partners: Luleå University of Technology, Umeå University, Energy Technology Centre in Piteå, SWEBO Bioenergy AB
Duration: Phase 1 2008-2009, Phase 2 2009-2011
Contact persons: Marcus Öhman (LTU), Christoffer Boman (UmU), Hassan Salman (ETC)