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1. (WO2017040795) POLYMERIC MICROPARTICLES AS FILTRATION AND/OR CLARIFYING AIDS IN PHOSPHORIC ACID PRODUCTION
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Pub. No.: WO/2017/040795 International Application No.: PCT/US2016/049926
Publication Date: 09.03.2017 International Filing Date: 01.09.2016
Chapter 2 Demand Filed: 30.06.2017
IPC:
B01D 21/01 (2006.01) ,B03B 7/00 (2006.01) ,C01B 25/235 (2006.01) ,C02F 1/56 (2006.01) ,C01F 11/46 (2006.01)
[IPC code unknown for B01D 21/01][IPC code unknown for B03B 7][IPC code unknown for C01B 25/235][IPC code unknown for C02F 1/56][IPC code unknown for C01F 11/46]
Applicants:
CYTEC INDUSTRIES INC. [US/US]; 504 Carnegie Center Princeton, New Jersey 08540, US
Inventors:
ZHANG, Lei; US
Agent:
BELL, Charles; US
Priority Data:
62/212,83501.09.2015US
Title (EN) POLYMERIC MICROPARTICLES AS FILTRATION AND/OR CLARIFYING AIDS IN PHOSPHORIC ACID PRODUCTION
(FR) MICROPARTICULES POLYMÈRES COMME ADJUVANTS DE FILTRATION ET/OU DE CLARIFICATION DANS LA PRODUCTION D'ACIDE PHOSPHORIQUE
Abstract:
(EN) Processes for enhancing filtration rate and/or clarification of phosphoric acid produced by the wet process and containing suspended insoluble particulates by adding to one or more stage of the wet process phosphoric acid production stream an effective amount of a reagent including polymeric microparticles characterized as being anionic or amphoteric and having a weight average molecular weight of greater than 60 Million daltons are provided herein.
(FR) L'invention concerne des procédés permettant d'améliorer la vitesse de filtration et/ou la clarification de l'acide phosphorique produit par le procédé par voie humide et contenant des matières particulaires insolubles en suspension, au moyen de l'addition, à une ou plusieurs étapes du courant de production d'acide phosphorique par voie humide, d'une quantité efficace d'un réactif comportant des microparticules polymères caractérisées comme étant anioniques ou amphotères et présentant une masse moléculaire moyenne en poids supérieure à 60 millions de daltons.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, 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, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)