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1. (WO2001004048) METHOD FOR TREATING FERTILIZER PROCESS SOLUTIONS
PCT Biblio. Data
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Pub. No.:
WO/2001/004048
International Application No.:
PCT/FI2000/000623
Publication Date:
18.01.2001
International Filing Date:
06.07.2000
Chapter 2 Demand Filed:
26.01.2001
IPC:
C01B 25/28
(2006.01),
C05B 7/00
(2006.01),
C05C 9/00
(2006.01)
C
CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
25
Phosphorus; Compounds thereof
16
Oxyacids of phosphorus; Salts thereof
26
Phosphates
28
Ammonium phosphates
C
CHEMISTRY; METALLURGY
05
FERTILISERS; MANUFACTURE THEREOF
B
PHOSPHATIC FERTILISERS
7
Fertilisers based essentially on alkali or ammonium orthophosphates
C
CHEMISTRY; METALLURGY
05
FERTILISERS; MANUFACTURE THEREOF
C
NITROGENOUS FERTILISERS
9
Fertilisers containing urea or urea compounds
Applicants:
KEMIRA AGRO OY
[FI/FI]; Porkkalankatu 3, FIN-00180 Helsinki (FI)
(For All Designated States Except US)
.
KARONEN, Janne
[FI/FI]; (FI)
(For US Only)
.
WECKMAN, Anders
[FI/FI]; (FI)
(For US Only)
Inventors:
KARONEN, Janne
; (FI).
WECKMAN, Anders
; (FI)
Agent:
BERGGREN OY AB
; P.O. Box 16, FIN-00101 Helsinki (FI)
Priority Data:
991563
08.07.1999
FI
Title
(EN)
METHOD FOR TREATING FERTILIZER PROCESS SOLUTIONS
(FR)
PROCEDE DE TRAITEMENT DE SOLUTIONS DE PRODUCTION D'ENGRAIS
Abstract:
(EN)
A method for manufacturing a solid product containing nitrogen and phosphor, particularly a solid ammonium phosphate and/or urea ammonium phosphate product, in which method the solution containing urea and phosphoric acid is heated. Water then evaporates from the solution and the urea in the solution decomposes into ammonia and carbon dioxide. The carbon dioxide exits the reactor together with water vapour; the generated ammonia neutralizes the phosphoric acid. A suspension containing ammonium phosphate and/or urea ammonium phosphate is obtained, which is solidified, dried, crushed, ground and/or granulated. The end product as such can be used as a fertilizer or it can be used as part of a mixed fertilizer.
(FR)
Cette invention concerne un procédé de fabrication d'un produit solide contenant de l'azote et du phosphore, notamment un produit solide à base de phosphate d'ammonium et/ou de phosphate d'ammonium urée, lequel procédé consiste à chauffer la solution contenant de l'urée et de l'acide phosphorique. L'eau s'évapore de la solution, et l'urée contenue dans la solution se décompose ammoniac et en dioxyde de carbone. Le dioxyde de carbone quitte le réacteur en même temps que la vapeur d'eau, et l'ammoniac ainsi obtenu neutralise l'acide phosphorique. On obtient une suspension contenant du phosphate d'ammonium et/ou de phosphate d'ammonium urée, laquelle est ensuite solidifiée, séchée, écrasée, broyée et/ou granulée. Le produit fini peut être utilisé tel quel comme engrais ou comme partie d'un engrais mélangé.
Designated States:
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)