Patent SG-11201407693X-A (SG)
Title: In situ generation of polysulfide ions using elemental sulfur for improved corrosion control,cyanide management, mercury management, arsine management and performance and reliability of acid gas removal equipment
Inventor: MCGARVEY GORDON BRYCE
IPC: C23F11/06
Filed: 2013-07-23
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 13 February 2014 (13.02.2014) WIPOIPCT (10) International Publication Number WO 2014/025533 A1 (51) International Patent Classification: B01D 53/14 (2006.01) K011) 53/78 (2006.01) K011) 53/52 (2006.01) CO IK 17/20 (2006.01) B01D 53/73 (2006.01) C23F11/06 (2006.01) (21) International Application Number: (22) International Filing Date: (25) Filing Language: (26) Publication Language: PCT/US2013/051655 23 July 2013 (23.07.2013) English (30) Priority Data: 13/568,561 7 August 2012 (07.08.2012) English US (71) Applicant: EXXONMOBIL RESEARCH AND ENGIN­ EERING COMPANY [US/US]; 1545 Route 22 East, P.O. Box 900, Annandale, NJ 08801-0900 (US). (72) Inventors: McGARVEY, Gordon Bryce; 920 Hay Court, Sarnia, Ontario N7S 3G7 (CA). FALKINER, Robert J.; 21 Mosley Crescent, Brampton, Ontario L6Y 5C7 (CA). SLIM, David R.; 608 Stafford Place, Sarnia, Ontario N7S 3Z2 (CA). KNICKERBOCKER, Bryan M.; 15460 Wa­ ters Creek Drive, Centreville, VA 20120 (US). (74) Agents: SHANLEY, Matthew et al.; ExxonMobil Re­ search and Engineering Company, 1545 Route 22 East, P.O. Box 900, Annandale, NJ 08801-0900 (US). (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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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. (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, 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). Published: — with international search report (Art. 21(3)) — with amended claims and statement (Art. 19(1)) (54) Title: IN SITU GENERATION OF POLYSULFIDE IONS USING ELEMENTAL SULFUR FOR IMPROVED CORROSION CONTROL,CYANIDE MANAGEMENT, MERCURY MANAGEMENT, ARSINE MANAGEMENT AND PERFORMANCE AND RELIABILITY OF ACID GAS REMOVAL EQUIPMENT TREATED GAS LEAN AMINE STORAGE t •in ABSORBER TOWER 20^ m CJ o UNTREATED GAS r^ 70 J FLASH 1)DRUM 130 ACID GAS TO SULFUR PLANT POLYSULFIDE GENERATION VESSEL 90 J r HOT-LEAN EXCHANGER REGENERATOR TOWER REBOILER .150 ~S~~ 170 FIG. 1 r* (57) Abstract: Methods and systems are provided for the in situ generation of polysulfide ions in a process stream including S\" 2 Q and/or HS\" ions. Methods and systems are also provided to ameliorate corrosion in a process stream containing an acid gas or a ^ scrubbing agent solvent, and abate mercury and cyanide process in streams containing scrubbing a agent solvent.