Tampella Power Oy

Veli-Antti Kivilinna

Pauli Harila

Keijo Imelainen

Ahti Klami

Seppo Tuominiemi

Paavo Hyoty

Esa Pikkujamsa

Jukka Vaistomaa

Jarmo Kaila

Matti Knuutila

Maiju Alaniemi

Method for controlling chloride concentration in the flue gas of a

A method for burning secondary sludge in a recovery boiler, in which method secondary sludge is mixed with black liquor. According to the method, an alkali is added to the secondary sludge so as to obtain a mixture having a pH of over 7, whereafter the mixture of alkali and secondary sludge is heated to a temperature of over 80.degree. C. and kept at this temperature for over 30 minutes. Thereafter the heat treated mixture of alkali and secondary sludge is supplied to the thick end of a black liquor evaporation plant.

Method for burning secondary sludge in a recovery boiler

A method for adjusting the sulphur/sodium ratio in a soda recovery boiler when strong sulphurous odour gases are burned therein. According to the method, sodium is introduced into the soda recovery boiler in an amount proportional to the amount of sulphur either as sodium hydroxide, sodium carbonate compounds or soap, whereby the sodium and sulphur react, forming sodium sulphate, which can be removed from the flue gases together with fly ash.

Method for adjusting the sulphur/sodium ratio in the flue gases of a

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Lautiosaari, Finland

Veli-Antti Kivilinna