C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 53/06 (2006.01) C07C 51/41 (2006.01)
Patent
CA 2220700
The present invention relates to a method for manufacture of products containing disalts of formic acid. Potassium hydroxide, carbonate, bicarbonate or formate, sodium hydroxide, carbonate, bicarbonate or formate, cesium hydroxide, carbonate, bicarbonate or formate or ammonium formate or ammonia is mixed with formic acid at 40-100 °C, the mixture is cooled and centrifuged. The filtrate containing acid salt is collected. The filter cake is transported to a drier/mixer where other disalts, calcium formate and/or a desiccant can be added.
L'invention concerne un procédé de fabrication de produits contenant des bisels d'acide formique. Ce procédé consiste à mélanger de l'hydroxyde, du carbonate, du bicarbonate ou du formiate de potassium, de l'hydroxyde, du carbonate, du bicarbonate ou du formiate de sodium, de l'hydroxyde, du carbonate, du bicarbonate ou du formiate de césium, du formiate d'ammonium ou du gaz ammoniac, avec de l'acide formique à 40-100 DEG C, puis à refroidir et à centrifuger le mélange. Le filtrat contenant le sel d'acide est ensuite recueilli, et le gâteau de filtre est transporté vers un sécheur/mélangeur, où d'autres bisels, du formiate de calcium et/ou un desséchant peuvent être ajoutés.
Addcon Nordic As
Fetherstonhaugh & Co.
Norsk Hydro Asa
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