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Finland's largest waste-to-energy plant commissioned in Vantaa
2014, 17th of September

Finland's largest and most energy-efficient waste-to-energy plant was inaugurated in Vantaa in September 2014. Vantaa Energy is doing its bit to promote sustainable energy choices in society. The mixed waste used as fuel at the waste-to-energy plant will replace a corresponding volume of imported fossil fuels, such as coal and natural gas, thus contributing to Finnish security of supply.

The flue gas cleaning methods of Vantaa Energy's waste-to-energy plant represent the best available technology. In May 2011 the Finnish energy company Vantaa Energy contracted Hitachi Zosen Inova to deliver the combustion / boiler lot to the new combined cycle power plant serving the Helsinki metropolitan area. Two factors - both high operational security and the maximal degree of efficiency - made compelling arguments in favor of the offer by Hitachi Zosen Inova and Kamwest Oy.

The earth construction work for the plant started in autumn 2011, the foundation stone was laid in May 2012, and the topping-out ceremony was held in May 2013. The trial run of the plant started in March 2014 when the first waste consignments were incinerated. In September 2014 the plant was in operation.

Westenergy's Waste-to-Energy Plant started the operation in late summer 2012
2012, 10th of August

Westenergy’s Waste-to-Energy plant in Vaasa, Finland started the production of district heating on Friday 10th of August 2012. As fuel, the plant uses combustible source-separated waste that cannot otherwise be utilized. Most of the fuel is common household waste. In addition, different kinds of industrial waste, for example, waste from food and wood processing industries, expired groceries and agricultural waste can be utilized in the WtE plant.


4 The Boiler

Heat exchange from the flue gases to the boiler water takes place mainly in the boiler. In the first stage, the water is preheated. The walls of the boiler consist of pipes covered with bricks and Inconel coating. The water inside the pipes is heated to steam and then super-heated to 400 degrees and 40 bars in the super-heater section of the horizontal pass after which the hot and high-pressure steam is led to the turbine.