A soda recovery boiler and turbine were placed in operation in autumn 2006. As a result of the investment, production of kraft pulp has increased to 430,000 tons per year.
The soda recovery boiler is designed so that the pulp mill will be able to increase the production in the future to 800,000 tons annually. It is designed to provide maximum electricity production combined with the steam turbine. The fuel to produce this electrical energy is more than 98 per cent biofuel, mostly black liquor.
The soda recovery boiler and turbine increases energy efficiency and the production capacity from our black liquor and other biofuels are 0,5 TWh green electricity.
This corresponds to the heating of 25,000 single-family homes and means that the kraft plant is more than self-sufficient in electricity. It also means that fossile CO2 –emissions from other electrical energy sources are reduced by some 180 000 tonnes yearly.
Despite the CTMP plant consuming a substantial amount of electrical energy, Östrand will be able to sell green electrical energy. Östrand also supplies heat to the Timrå Municipality district-heating network.
Other effects are significantly lower air emissions and a radical reduction of the harmless, but unpleasant, odours in the mill’s surroundings.