Fixed bed gasification of agricultural residues

Informacje na temat projektu

Identyfikator umowy o grant: JOR3950021

Projekt został zamknięty

Data rozpoczęcia 1 Stycznia 1996

Data zakończenia 31 Grudnia 1997

Finansowanie w ramach

• Specific programme for research and technological development, including demonstration in the field of non-nuclear energy, 1994-1998

Koszt całkowity

Brak danych

Wkład UE

Brak danych

Koordynowany przez

UNIVERSITA DEGLI STUDI DI NAPOLI FEDERICO II
Italy

CORDIS oferuje możliwość skorzystania z odnośników do publicznie dostępnych publikacji i rezultatów projektów realizowanych w ramach programów ramowych HORYZONT.

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Rezultaty

Fixed bed gasification of agricultural residues

The main purpose of this project is to provide the technical basis for the development of effective gasification technologies for the processing of agricultural residues. This is particularly important for Mediterranean countries where residues are widely available but dispersed over large or hardly accessible areas. This project is concerned with fixed-bed gasification of agricultural residues for decentralized heat and power production. The different aspects of the problem have been taken into account through the different stages of the process including: availability, pre-treatment, transportation and storage of feedstocks, evaluation of their physico-chemical properties and thermo-chemical behaviour, conversion, model development, operation of a commercial plant and combustion tests of the producer gas. Extensive laboratory-scale experiments have demonstrated that the heating value of the producer gas from agricultural residues is, in some cases, even higher than that from wood. However, pilot scale tests have provided evidence of serious difficulties in the attainment of steady operation conditions. This is because of the very high reactivity and the low bed density (straw), the problematic ash behaviour (straw and olive waste), the high moisture content (grape residues), the high amount of tar produced and/or the very high bed density (almond shells, olive waste). Feedstock pre-treatments (in particular, fractionation and leaching) and co-feeding residues with different characteristics, have been found to be effective tools to reduce or to eliminate such drawbacks. Detailed transport models of fixed bed gasification have been developed, which, in conjunction with the measured reactivity and chemical kinetics, have been applied to clarify the complex interaction between physical and chemical processes and to optimize the operation of a commercial updraft plant.