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1. (WO2018104257) REMOVAL OF ARSENIC FROM FLUE-GAS
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Pub. No.: WO/2018/104257 International Application No.: PCT/EP2017/081435
Publication Date: 14.06.2018 International Filing Date: 05.12.2017
IPC:
B01D 53/64 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34
Chemical or biological purification of waste gases
46
Removing components of defined structure
64
Heavy metals or compounds thereof, e.g. mercury
Applicants:
UMICORE [BE/BE]; Rue du Marais 31 1000 Brussels, BE
Inventors:
SCHMIDT, Anne; GB
VERMEULEN, Isabel; BE
NOCKEMANN, Peter; GB
Agent:
PILATE, André; BE
Priority Data:
16202195.005.12.2016EP
Title (EN) REMOVAL OF ARSENIC FROM FLUE-GAS
(FR) ÉLIMINATION DE L'ARSENIC DES GAZ DE COMBUSTION
Abstract:
(EN) The divulged invention concerns a process for the removal of arsenic oxides inprocessexhaust gases, comprising the step of passing the exhaust gases through a supported ionic liquid phase bed,characterized in that the ionic liquid comprises one or more cations from the list consisting of substituted phosphonium, ammonium, imidazolium, pyrrolidinium, and pyridinium, and one or more anions from the list consisting of chloride, bromide, and carboxylate. Compared toa bed of active carbon, theionic liquid soaked active carbon bed according to the invention allows for an estimated doubling of thearsenic adsorptioncapacity of the bed, while also considerably enhancingthe kineticsofadsorption.
(FR) La présente invention concerne un procédé d'élimination d'oxydes d'arsenic des gaz d'échappement de procédé, comprenant l'étape consistant à faire passer les gaz d'échappement à travers un lit de phase liquide ionique supporté, caractérisé en ce que le liquide ionique comprend un ou plusieurs cations de la liste constituée par le phosphonium substitué, l'ammonium, l'imidazolium, le pyrrolidinium et le pyridinium, et un ou plusieurs anions de la liste consistant en chlorure, bromure et carboxylate. Par rapport à un lit de charbon actif, le lit de charbon actif imbibé de liquide ionique selon l'invention permet un doublement estimé de la capacité d'adsorption d'arsenic du lit, tout en améliorant considérablement la cinétique d'adsorption.
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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, 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)