The Alholmens Kraft Power Station (also known as Jakobstad Power Station or Pietarsaari Power Station) is a

biomass Biomass is plant-based material used as a fuel for heat or electricity production. It can be in the form of wood, wood residues, energy crops, agricultural residues, and waste from industry, farms, and households. Some people use the terms bi ...

power station in Alholmen,

Jakobstad Jakobstad (; fi, Pietarsaari) is a town and municipality in Ostrobothnia, Finland. The town has a population of () and covers a land area of . The population density is . Neighboring municipalities are Larsmo, Pedersöre, and Nykarleby. The ci ...

in Ostrobothnia region, Finland. It is the largest biomass

cogeneration Cogeneration or combined heat and power (CHP) is the use of a heat engine or power station to generate electricity and useful heat at the same time. Cogeneration is a more efficient use of fuel or heat, because otherwise- wasted heat from elect ...

power station in the world. The power station was commissioned in 2001. It was built next to the existing, now decommissioned power station. The power station is located slightly north of

UPM-Kymmene UPM-Kymmene Oyj is a Finnish forest industry company. UPM-Kymmene was formed by the merger of Kymmene Corporation with Repola Oy and its subsidiary United Paper Mills Ltd in 1996. UPM consists of six business areas: UPM Fibres, UPM Energy, UPM Ra ...

Wisaforest

pulp and paper mill A paper mill is a factory devoted to making paper from vegetable fibres such as wood pulp, old rags, and other ingredients. Prior to the invention and adoption of the Fourdrinier machine and other types of paper machine that use an endless belt, ...

in Alholmen. The decommissioned power station had two

black liquor In industrial chemistry, black liquor is the by-product from the kraft process when digesting pulpwood into paper pulp removing lignin, hemicelluloses and other extractives from the wood to free the cellulose fibers. The equivalent material i ...

recovery boilers, one oil fired

package boiler A package boiler is a factory-made boiler. Package boilers are available in a range of standard designs. Package boilers are used for heating and act as a steam generator for small power purposes such as self-powered industrial plants. Package boi ...

, one bark boiler as well as several steam turbines with the electrical output of 75 MW. The new power station was designed by

Metso Metso Oyj was a Finnish industrial machinery company focusing on providing technology and services for mining, Construction aggregate, aggregates, and Petroleum industry, oil and gas, recycling, pulp and paper and other process industries. On ...

and its boiler was manufactured by

Kværner Kværner was a Norwegian engineering and construction services company that existed between 1853 and 2005. In 2004, it was amalgamated to the newly formed subsidiary of Aker ASA - Aker Kværner, which was renamed Aker Solutions on 3 April 2008 ...

. It employs 400 people. The power station has an installed capacity of 265 MW of electrical power. In addition, it provides 60 MW

district heating District heating (also known as heat networks or teleheating) is a system for distributing heat generated in a centralized location through a system of insulated pipes for residential and commercial heating requirements such as space heating a ...

for the city of Jakobstad and 100 MW

process steam A process is a series or set of activities that interact to produce a result; it may occur once-only or be recurrent or periodic. Things called a process include: Business and management *Business process, activities that produce a specific se ...

and heat for the UPM-Kymmene paper mill. The new power station uses wood-based biofuels (

forest residue Green waste, also known as "biological waste", is any Organic matter, organic waste that can be composted. It is most usually composed of refuse from gardens such as grass clippings or leaves, and domestic or industrial kitchen wastes. Green wast ...

s) as the main fuel. Peat is also used while coal is a reserve fuel. It burns about 300,000 bales of forest residues per year. The power station is equipped with the

circulating fluidized bed The circulating fluidized bed (CFB) is a type of Fluidized bed combustion that utilizes a recirculating loop for even greater efficiency of combustion. while achieving lower emission of pollutants. Reports suggest that up to 95% of pollutants Ci ...

boiler with capacity of 500 MWth, which is the largest biomass-fired CFB boiler in the world. The

operating temperature An operating temperature is the allowable temperature range of the local ambient environment at which an electrical or mechanical device operates. The device will operate effectively within a specified temperature range which varies based on the de ...

of the boiler is and the operational pressure is .

References

{{Reflist Biofuel power stations in Finland Jakobstad Cogeneration power stations in Finland Buildings and structures in Ostrobothnia (region)

See also

References