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. (WO2006013228) A PROCESS FOR RECOVERING ORGANIC AND INORGANIC COMPONENTS FROM A WASTE STREAM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/013228    International Application No.:    PCT/FI2005/000349
Publication Date: 09.02.2006 International Filing Date: 03.08.2005
Chapter 2 Demand Filed:    30.05.2006    
IPC:
B01D 9/04 (2006.01), C02F 1/22 (2006.01)
Applicants: KEMIRA GROWHOW OYJ [FI/FI]; P.O. Box 900, FI-00181 HELSINKI (FI) (For All Designated States Except US).
WITKAMP, Geert-Jan [NL/NL]; (NL) (For US Only).
TRAMBITAS, Daniela, Oana [NL/NL]; (NL) (For US Only)
Inventors: WITKAMP, Geert-Jan; (NL).
TRAMBITAS, Daniela, Oana; (NL)
Agent: BERGGREN OY AB; P.O. Box 16 (Jaakonkatu 3 A), FI-00101 HELSINKI (FI)
Priority Data:
20041056 04.08.2004 FI
Title (EN) A PROCESS FOR RECOVERING ORGANIC AND INORGANIC COMPONENTS FROM A WASTE STREAM
(FR) PROCEDE DE RECUPERATION DE COMPOSANTS ORGANIQUES ET INORGANIQUES A PARTIR D'UN FLUX DE DECHETS
Abstract: front page image
(EN)The present invention relates to a process for recovering an organic or inorganic acid, base and/or salt from an aqueous waste solution by cooling crystallisation, which waste solution further contains at least one organic component, comprising the steps of: a. precipitating said organic component by cooling the waste solution within a temperature range of 0 °C to a temperature below the freeze crystallisation point of said organic or inorganic acid, base or salt, b. removing the precipitated product of step (a) by separation from the waste solution, and c. precipitating the desired organic or inorganic acid, base or salt as crystals by cooling further the waste solution obtained from step (b) to the freeze crystallisation point of said organic or inorganic acid, base or salt, and d. recovering the precipitated product of step (c).
(FR)L'invention concerne un procédé de récupération d'acide, de base et/ou de sel organique ou inorganique à partir d'une solution aqueuse de déchets, en cristallisation par refroidissement, ladite solution contenant aussi au moins un composant organique, selon les étapes suivantes : a. précipitation de la composante organique par refroidissement de la solution entre 0 °C et une température inférieure au point de cristallisation par congélation de l'acide, de la base ou du sel organique ou inorganique, b. élimination du précipité issu de (a) par séparation de la solution, et c. précipitation de l'acide, de la base ou du sel organique ou inorganique spécifique sous forme de cristaux, par refroidissement plus poussé de la solution issue de (b) au point de cristallisation par congélation de ce produit - acide, base, sel - spécifique et d. récupération du précipité issu de (c).
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, 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, HU, IE, IS, IT, LT, LU, LV, MC, NL, 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: English (EN)