CORDIS provides links to public deliverables and publications of HORIZON projects.
Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .
Exploitable results
The main objective of the project was to develop an innovative, highly efficient reverse flow molten slag gasifier for combined heat and power production in a capacity range of 0.5 - 2.5 MWel. The new gasifier should be able to convert relatively wet and ash-rich biomass.
Main results:
A membrane separation technology has been selected for air oxygen enrichment, for which the maximum oxygen content is limited to about 40 vol%. Based on a techno-economic evaluation of the complete process it was concluded that oxygen enrichment does not improve the overall system performance as it results in higher investment and operating costs.
The novel gasifier was designed and tested at lab-scale (2 kg biomass per hour) and mini-plant scale (20 kg biomass per hour). Succesful operation of the novel gasifier was demonstrated. Gas produced from the gasifier contained only minor amounts of tar, and heating values of up to 7 MJ/Nm3 were measured. During the project the operation of the system was significantly improved, although some constructional problems persisted with respect to gas sealing.
An economic process model has been developed which included performance and economic costs functions for the major unit operations in the process, as well as the dryer, reverse-flow gasifier, oxygen enrichment unit and prime mover. A major conclusion was that a system with the novel gasifier - in comparison with one with a conventional gasifier - shows an increased overall efficiency for all levels of air oxygen enrichment. However, cost of electricity is only superior to a conventional gasifier system if unenriched air is used, due mostly to the cost and energy requirement of the enrichment unit.
Before the new gasifier can be demonstrated on a (semi) commercial scale additional development activities are required.
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