Kemira Oyj

Taminco Finland

Lauri Määttä

Timo H Nissinen

Timo Härmä

Seppo Pohjanvesi

Pentti Pekonen

Jouko Arvola

Eero Hätälä

Timo Harma

Eero Hatala

The invention relates to a method for preparing a reducing agent composition, which is used in the selective catalytic reduction of nitrogen oxides and which contains from 20 to 40% by weight of urea, from 20 to 40% by weight of ammonium formate, and water. The composition is prepared by adding urea to the aqueous solution of ammonium formate that is prepared in situ, and by preparing the aqueous solution of ammonium formate using, as starting materials, a source of ammonium, a source of formate, and water.

Method for the preparation of a reducing agent composition

The invention relates to a method and an arrangement in which a percarboxylic acid product is prepared and used. Conventional methods include refrigerated transport and double storage of the percarboxylic acid product before the consumption thereof at its site of use. These expensive stages have now been eliminated carrying out the preparation in connection with the use.

Method and arrangement for the preparation of percarboxylic acid

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Oulu, Finland

Lauri Määttä