Patent SG-11201808620Y-A (SG)
Title: System and method to remove acidic species from a rich meg stream by stripping
Inventor: KNIGHT DAVID
IPC: C07C31/20
Filed: 2017-03-31
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization M11111 0 HEIN HO 11111 01E010 11111001 01 110111111101111 III 11 International Bureau .. .... ..Yejd ..... .....1 (10) International Publication Number (43) International Publication Date WO 2017/173286 Al 5 October 2017 (05.10.2017) W I PO I P CT (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every BOLD 3/00 (2006.01) CO7C 2 9 / 8 8 (2006.01) kind of national protection available): AE, AG, AL, AM, C07C 29/76 (2006.01) C10L 3/10 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, C07C 29/78 (2006.01) CO7C 31/20 (2006.01) 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, (21) International Application Number: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, PCT/US2017/025404 KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, (22) International Filing Date: MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, 31 March 2017 (31.03.2017) 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, (25) Filing Language: English TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, (26) Publication Language: English ZA, ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 15/089,076 1 April 2016 (01.04.2016) US kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, (71) Applicant: CAMERON SOLUTIONS, INC. [US/US]; TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, 1333 West Loop South, Suite 1700, Houston, TX 77027 TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, (US). DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, (72) Inventors: KNIGHT, David, John; 34, Jalan Mambu LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, Taman Bandaraya, 59100 Kuala Lumpur (MY). SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, _ LANGLEY, Steven; 328 Whitestone Way, Croydon, GW, KM, ML, MR, NE, SN, TD, TG). — Greater London CRO 4FJ (GB). Published: _ (74) Agent: ROSSLER, Paul, E.; Gablegotwals, 100 West 5th — with international search report (Art. 21(3)) = Street, Tulsa, OK 74103 (US). — with amended claims and statement (Art. 190)) (54) Title: SYSTEM AND METHOD TO REMOVE ACIDIC SPECIES FROM A RICH MEG STREAM BY STRIPPING = FIG. I 33 G. — = = 10 recycl lop 31 as purge—le• 41 / Caustic Solution = = = 30 Gas/Acetic Stripper , i 37 — 21 \—Rich MEG with Aceti 27 Gas/acetic ,...... Gas Blower p i Gas Cooler 35 lir 11 make-u. p 25 A MEG/Acetic Stripper Waste Water / Acetic—b. 23 —Gas ,tD cc N 29 M Rich MEG--I. IN 11 ---- (57) : A system and method for removing acidic species from a rich mono-ethylene glycol (\"MEG\") solution (21) does so IN by stripping the acid from the rich MEG solution (21) by contacting the solution with a gas (23), the gas being nitrogen or a fuel gas C such as methane; and stripping the acid from the gas by contacting the gas with a caustic solution (41) such as a dilute sodium hy - el droxide solution. The stripping steps take place in respective stripping columns (25). A portion of the gas (27) exiting the gas acid en. ) stripping column (30) can be recycled to the MEG acid stripping column (25) to reduce total gas usage. A portion of the waste stream (35) exiting the gas acid stripping column (30) can be recycled back to the gas acid stripping column (30) to reduce the amount of caustic solution (41) used as well as the amount of waste.