WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2008099063) A METHOD FOR THE PREPARATION OF A REDUCING AGENT COMPOSITION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2008/099063    International Application No.:    PCT/FI2008/050062
Publication Date: 21.08.2008 International Filing Date: 14.02.2008
IPC:
B01D 53/56 (2006.01), B01D 53/86 (2006.01)
Applicants: KEMIRA OYJ [FI/FI]; Porkkalankatu 3, FI-00180 Helsinki (FI) (For All Designated States Except US).
ARVOLA, Jouko [FI/FI]; (FI) (For US Only).
HÄRMÄ, Timo [FI/FI]; (FI) (For US Only).
HÄTÄLÄ, Eero [FI/FI]; (FI) (For US Only).
MÄÄTTÄ, Lauri [FI/FI]; (FI) (For US Only).
NISSINEN, Timo [FI/FI]; (FI) (For US Only).
PEKONEN, Pentti [FI/FI]; (FI) (For US Only)
Inventors: ARVOLA, Jouko; (FI).
HÄRMÄ, Timo; (FI).
HÄTÄLÄ, Eero; (FI).
MÄÄTTÄ, Lauri; (FI).
NISSINEN, Timo; (FI).
PEKONEN, Pentti; (FI)
Agent: BERGGREN OY AB; P.O. Box 16 (Antinkatu 3 C), FI-00101 Helsinki (FI)
Priority Data:
20070134 15.02.2007 FI
Title (EN) A METHOD FOR THE PREPARATION OF A REDUCING AGENT COMPOSITION
(FR) PROCÉDÉ DE PRÉPARATION D'UNE COMPOSITION D'AGENT RÉDUCTEUR
Abstract: front page image
(EN)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 said aqueous solution of ammonium formate using, as starting materials, a source of ammonium, a source of formate, and water.
(FR)L'invention porte sur un procédé de préparation d'une composition d'agent réducteur, qui est utilisé dans la réduction catalytique sélective d'oxydes d'azote et qui contient de 20 à 40 % en poids d'urée, de 20 à 40 % en poids de formiate d'ammonium, et de l'eau. La composition est obtenue par addition d'urée à la solution aqueuse de formiate d'ammonium qui est préparée in situ, et par préparation de ladite solution aqueuse de formiate d'ammonium à l'aide, comme matières de départ, d'une source d'ammonium, d'une source de formiate et d'eau.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: Finnish (FI)