Joensuu, Finland – Metso and Fortum Power and Heat have signed a contract regarding a delivery of a bio-oil production plant and a related automation system to the Fortum power plant in Joensuu, Finland.
The delivery involves a demonstration plant, in which bio-oil is produced from forest residue and other biomasses. The bio-oil produced in the plant can be used instead of heavy fuel oil, andmight also be used as raw material in the chemicals industry and biodiesel production in the future.
The nominal output of the plant will be 30 MW oil production and the planned annual production will be 50 kilotonnes. The annual production will equal to 210 GWh of energy, while the production plant will utilise 225,000 solid cubic meters of forest residue and sawdust a year.
The integration of bio-oil production into the power plant process enables the utilization of the side product from the production process in the generation of electricity and district heating. The utilisation of bio-oil produced at the Joensuu plant helps reduce carbon dioxide emissions by 59 kilotonnes a year.
“In this delivery, a bio-oil production plant is integrated profitably to a fluidised bed boiler, in which the uncondensed gases and coke generated in the pyrolysis can be combusted”, said Kai Mäenpää, director, Metso Power business line.
Bio-oil will be produced by means of pyrolysis. In this process, wood-based biomass is quickly heated up to approximately 500°C, a temperature at which the biomass is vaporized to gases, which are condensed to bio-oil when cooled.
Metso has developed the pyrolysis technology in collaboration with VTT (Technical Research Centre of Finland), Fortum and UPM since 2007. The development work is based on the basic research and patents of VTT.
Metso will deliver the plant to Fortum as a turnkey delivery. The scope includes foundations and building work, necessary production equipment, a Metso DNA automation system, and electrification.
The demonstration venture will test and further develop integrated pyrolysis technology. It will employ Metso’s DNA control system, which the supplier said, is to be utilised in the pyrolysis processes of larger-scale power plants in the future.
The new bio-oil production plant is scheduled for start-up in the autumn of 2013. The value of the order has not been disclosed, and the order is included in Pulp, Paper and Power’s first quarter orders received.