Patent SG-11201900956R-A (SG)
Title: Co-treatment of flue gas cleaning waste and acidic scrubber liquid
Inventor: RASMUSSEN ERIK
IPC: F23J15/04
Filed: 2017-08-10
Abstract: Sewed reaction -ie .4: Buffering 3.6: Washing NeOHf 3.9, Sedimentation III 3.14. Flier press (me i) Precipitating - itileni Precipitation Moviihinn 3.13: Filter press (Metal) 3.14. SB1 3.15: HMF HCLS ( ' Want. water 3.5:Separation I 3.8: elpiletion O O cc O O (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 15 February 2018 (15.02.2018) WIP0 I PCT Hu onus °nolo omolomiolommoilomovois (10) International Publication Number WO 2018/029290 Al (72) (74) (81) (51) International Patent Classification: BOlD 53/66 (2006.01) F23J 15/04 (2006.01) BOlD 53/68 (2006.01) B09B 3/00 (2006.01) BOlD 53/77(2006.01) (21) International Application Number: PCT/EP2017/070281 (22) International Filing Date: 10 August 2017 (10.08.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: PA 2016 70612 11 August 2016 (11.08.2016) DK (71) Applicant: STENA RECYCLING INTERNATIONAL AB [SE/SE]; Fiskhamnsgatan 8B, 414 58 Goteborg (SE). Inventor: RASMUSSEN, Erik; Brogardsvej 15, 2820 Gentofte (DK). Agent: CHAS. HUDE A/S; H.C. Andersens Boulevard 33, 1780 Kobenhavn V (DK). Designated States (unless otherwise indicated, for every kind of national protection available): 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. (54) Title: CO-TREATMENT OF FLUE GAS CLEANING WASTE AND ACIDIC SCRUBBER LIQUID Figure 3 le 9 6 IyAsh andic; \" ‘ 3.1: First Oye rsve FOW . .) andior reaction particles F0/111:41 andior FOW-W and/or Fl3WF4 0 / (57) : The present invention relates to a method of treating heavy metal and halogen salt- containing solid waste material mainly from flue gas cleaning systems, the method comprising i) treating said solid waste material with acidic scrubber liquid to obtain a suspension with a pH of from 3 to 7 in the liquid phase, ii) separating solid and liquid material obtained in step i), iii) treating the solid material from step ii) with water to obtain a pH in the aqueous phase ranging from about 7 to about 1 1 followed by separation of the thus washed solid material from the liquid to obtain treated solid waste, iv) treating the liquid material from step ii) with one or more alkaline agent(s) and/or sulfides to obtain a pH of from about 9 to 1 1 to precipitate heavy metals, v) optionally, separating the heavy metals from step iv) from the liquid to obtain a heavy metal fraction and a halogen salt solution. [Continued on next page] WO 2018/029290 Al IMEDIM01101 OIDIRE10101011010010100110110IIIII01INIE (84) Designated States (unless otherwise indicated, for every kind of regional protection available): 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). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) of inventorship (Rule 4.17(iv)) Published: with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h))