WO 2016/185033 A1

Lime-based sorbent composition for mercury removal and its manufacturing process

(22) 20.05.2016

(43) 24.11.2016

(57) Sorbent composition containing core-shell particles for removing heavy metals, in particular, mercury from gases, wherein the core comprises a calcium-magnesium compound fitting the formula

aCaCO3.bMgCO3.xCaO.yMgO.zCa(OH)2.tMg(OH)2.ul,

wherein I represents impurities, a, b, x, y, z and t each being mass fractions > 0 and ≤ 100 %, u being mass fraction > 0 and < 20 % by weight, and is coated with a shell presenting a thickness comprised in the range of 50 nm to 20 μm, and comprising at least a metal salt and a sulfur-based compound and its manufacturing process.

(71) S.A. Lhoist Recherche et De­veloppement, rue Charles Dubois 28, 1342 Ottignies-Louvain-la-Neuve (BE)

(84) ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

x

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