Kemira Oyj

Oy Granula Ab Ltd.

Bt Wood Oy

Jari Kukkonen

Timo H Nissinen

Thomas Ahlnäs

Eero Aitta

Timo Nissinen

Pekka Seppi

A method for preparing a composition with low corrosive effect and low freezing point, in which an ammonium cation source is mixed with a carboxyl anion source in an appropriate molar or weight ratio, either without a medium or by using an appropriate medium for obtaining liquid or water-soluble organic ammonium carboxylate of formula (1): [NRRRR][R(COO)], in which R, R, and Rare selected from hydrogen, substituted and unsubstituted 1-6 carbon alkyl, Ris a substituted or unsubstituted 1-6 carbon alkyl, Ris hydrogen, a substituted or unsubstituted 1-6 carbon hydrocarbon and n is an integral 1-6, and, thereafter, a possible solvent is added while keeping the alkali or alkali-earth metal content of the composition in a range of 0.001-30 wt-%.

Method for preparing freezing point depressant composition

The invention relates to a catalytic process for reducing nitrogen oxides in flue gases, in which process a reducing agent containing composition is mixed with flue gas and the mixture achieved is brought into contact with a catalyst. In accordance with the invention, the composition contains e.g. 1 to 60% of weight of ammonium formate. Especially a low freezing point can be achieved with such water containing composition. In addition, a good reduction conversion is achieved even at low temperatures.

Catalytic process for reducing nitrogen oxides in flue gases and reducing agent composition

Growing community of inventors

Oulu, Finland

Jari Kukkonen