Patent SG-11201806928X-A (SG)
Title: Desulphurization of marine exhaust flue gas
Inventor: BAHADUR THAPA SHYAM
IPC: B01D53/18
Filed: 2017-05-11
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 16 November 2017 (16.11.2017) WIPO I PCT omit VIII Hot 0 Oil Ill 100 !imam oimIE (10) International Publication Number WO 2017/194645 Al (51) International Patent Classification: BOlD 53/14 (2006.01) BOlD 53/18 (2006.01) (21) International Application Number: PCT/EP2017/061259 (22) International Filing Date: 11 May 2017 (11.05.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16169118.3 11 May 2016 (11.05.2016) EP (71) Applicant: YARA MARINE TECHNOLOGIES AS [NO/NO]; Drammensveien 134 Building no. 6, 0277 Oslo (NO). (72) Inventors: BAHADUR THAPA, Shyam; Rathkes Gate 3, 0558 Oslo (NO). STRANDBERG, Peter; Stranden 73, 0250 Oslo (NO). (74) Agent: DE CLERCQ & PARTNERS; Edgard Gevaert- dreef 10a, 9830 Sint-Martens-Latem (BE). (81) 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, 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: DESULPHURIZATION OF MARINE EXHAUST FLUE GAS 1 FIG. 1 (57) : The application relates to a marine exhaust flue gas desulphurization system for reducing the amount of sulphur oxides present in an exhaust flue gas of one or more diesel engines of a marine vessel and being configured for being able to run in an open and in a closed loop mode, and comprising when configured to run in closed loop mode. The system comprises a wet scrubber system comprising at least one wet scrubber arranged for scrubbing the exhaust flue gases originating from the diesel engine of the marine vessel using a scrubber liquid, thereby generating a used scrubber liquid, wherein the wet scrubber comprises one or more used scrubber liquid withdrawal pipes for withdrawing the used scrubber liquid from the wet scrubber. The system also comprises at least one preparation reservoir arranged for preparing a magnesium hydroxide slurry by hydrolysis of magnesium oxide powder with water, the preparation reservoir comprising water addition means, magnesium oxide powder addition means and agitation means for mixing the water and the magnesium oxide powder. The system further comprises slurry transporting means for transporting the prepared magnesium hydroxide [Continued on next page] WO 2017/194645 Al MIDEDIMOMOIDEIROIDEMOMOIROMINEIROMOVOIMIE (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: — of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3)) slurry from the at least one preparation reservoir towards the used scrubber liquid withdrawn from the wet scrubber in the one or more used scrubber liquid withdrawal pipes there contacting the magnesium hydroxide slurry with the used scrubber liquid in order to clean the used scrubber liquid and/or to neutralize the acidity thereof. The application furthermore relates to a method for reducing the amount of sulphur oxides present in an exhaust flue gas of one or more diesel engines of a marine vessel.