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Valmet will supply a flue gas condensing plant to Helen Ltd’s Vuosaari C bioenergy heating plant in Helsinki, Finland. The new bioenergy heating plant will feature very high energy efficiency, as the heat from flue gases will be recovered to increase district heat production by 69 megawatts (MW) with Valmet’s advanced environmental technology.
The order is included in Valmet’s orders received of the first quarter 2020. The value of these types of orders is approximately between EUR 20–30 million. The flue gas condensing plant will be handed over to Helen in December 2022.
“Our company’s target is to be carbon neutral by 2035. As the flue gases after combustion are led to the condensing plant, it is possible to utilize the fuel to its fullest. The heat recovery at the Vuosaari plant will increase plant efficiency to about 122 percent based on the fuel’s effective heating value,” says Antti Saikkonen, Project Director, Helen Ltd.
“The exceptionally high heat recovery is achieved by using absorption heat pumps to cool down the scrubber water and by cooling the flue gas going into the stack to below 12 Celsius. The absorption heat pumps use low-pressure steam as the driving media instead of electricity,” says Risto Hämäläinen, Director, Environmental Systems, Pulp and Energy, Valmet.
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