Patent SG-11201408560X-A (SG)
Title: Multi-stage circulating fluidized bed syngas cooling
Inventor: LIU GUOHAI
IPC: B01J8/28
Filed: 2013-08-26
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 6 March 2014 (06.03.2014) WIPOIPCT (10) International Publication Number WO 2014/035887 A1 (51) International Patent Classification: B01J8/28 (2006.01) (21) International Application Number: PCT/US2013/056631 (22) International Filing Date: 26 August 2013 (26.08.2013) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 61/693,707 27 August 2012 (27.08.2012) US (71) Applicant: SOUTHERN COMPANY [US/US]; 600 North 18th Street, Bin 7N-8374, Birmingham, AL 35203- 2206 (US). (72) Inventors: LIU, Guohai; 1248 Eagle Park Road, Birming­ ham, AL 35242 (US). VIMALCHAND, Pannalal; 689 Highland Lakes Cove, Birmingham, AL 35242 (US). GUAN, Xiaofeng; c/o Southern Company, 600 North 18th Street, Birmingham, AL 35203-2206 (US). PENG, Wan- Wang; 944 Talon Way, Birmingham, AL 35242 (US). (74) Agent: SCHNEIDER, Ryan, A.; Troutman Sanders LLP, Bank of America Plaza, 600 Peachtree Street, NE, Suite 5200, Atlanta, GA 30308-2216 (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, [Continued on next page] (54) Title: MULTI-STAGE CIRCULATING FLUIDIZED BED SYNGAS COOLING (57) Abstract: A method and apparatus for cooling hot gas streams in the temperature range 800°C to 1600°C using multi-stage circulating fluid bed (CFB) coolers is disclosed. The invention relates to cooling the hot syngas from coal gasifiers in which the hot syngas entrains substances that 5 foul, erode and corrode heat transfer surfaces upon contact in conventional coolers. The hot syngas is cooled by extracting and indirectly transferring heat to heat transfer surfaces with circulating inert solid particles in CFB syngas coolers. l> 00 00 m o Stage 1 Dense Bed Cooler WO 2014/035887 A11lllllllllllllIIllllllIIIlllllIIIllllIIIIIIllllllllllllllllllllllllllllllllllllllllllllllll 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. (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). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) — as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) 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))