Patent SG-11201907924X-A (SG)
Title: Energy and environmentally integrated method for production of aromatic dicarboxylic acids by oxidation
Inventor: QUINTERO BARAJAS JOSÉ GABRIEL
IPC: C07C51/265
Filed: 2018-02-26
Abstract: WATERREMOVAL UNIT EXPANDER UNIT COMPRESSED AIR SUPPLY UNIT (GREEN FIELD) OXIDATION UNIT MATERIALS SUPPLY AND RECYCLE UNIT DIGESTION UNIT FIRST FILTRATION UNIT (GREEN FIELD) PURIFICATION UNIT (BROWN FIELD) DRYING UNIT SECOND FILTRATION UNIT AROMATIC DICARBOXYLIC ACID N cc O O (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 07 September 2018 (07.09.2018) WIP0 I PCT onion °nolo moluiollooimoino oimIE (10) International Publication Number WO 2018/158672 Al (51) International Patent Classification: CO7C 51/265 (2006.01) (21) International Application Number: PCT/IB2018/051195 (22) International Filing Date: 26 February 2018 (26.02.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/445,280 28 February 2017 (28.02.2017) US (71) Applicant: GRUPO PETROTEMEX, S.A. DE C.V. [MX/MX]; Ricardo Margain No. 444, Torre sur, Piso 16, Col. Valle del Campestre, San Pedro Garza Garcia, Nuevo Leon 66265 (MX). (72) Inventors: QUINTERO BARAJAS, Jose Gabriel; Car- retera Tampico Mante Km. 17, Col. Puerto Industrial, Al- tamira, Tamaulipas, C.P. 89603 (MX). RAMIREZ SOSA, Pamela Shantal; Carretera Tampico Mante Km. 17, Col. Puerto Industrial, Altamira, Tamaulipas, C.P. 89603 (MX). ESCOBAR LOPEZ, Alfredo; Carretera Tampico Mante Km. 17, Col. Puerto Industrial, Altamira, Tamaulipas, C.P. 89603 (MX). MEDINA VALENCIA, Verona; Carretera Tampico Mante Km. 17, Col. Puerto Industrial, Altamira, Tamaulipas, C.P. 89603 (MX). BULBARELA CRODA, Arturo; Carretera Tampico Mante Km. 17, Col. Puerto In- dustrial, Altamira, Tamaulipas, C.P. 89603 (MX). MORAN DELGADO, Bertha; Predio Buena Vista de Torres, Ran- cho El Pipinaco, Cosoleacaque, Ver, C.P. 96349 (MX). (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, 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, (54) Title: ENERGY AND ENVIRONMENTALLY INTEGRATED METHOD FOR PRODUCTION OF AROMATIC DICAR- BOXYLIC ACIDS BY OXIDATION FIG. I (57) : A continuous process for oxidizing a di-alkyl substituted aromatic compound with compressed air in a primary bubble column reactor; including removing a portion of the three phase reaction medium to a post—oxidation bubble column unit supplied with compressed air; separating the post oxidation reaction medium to an overhead gas and an underflow slurry; collecting overhead gases from the oxidation reactors and the de-gassing unit and conducting the combined overhead gases to a water removal column (WRC); transferring the underflow slurry from the de-gassing unit to a digestion unit to effect further oxidation without addition of air to the digestion unit; removing overhead gases to the water removal column; crystallizing the fmal oxidation slurry; and filtering the slurry on a rotary pressure filter; wherein a portion of the energy of the off gas from the WRC is employed to drive an air compressor to supply the compressed air for oxidation. [Continued on next page] WO 2018/158672 Al OII 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, 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). Published: — with international search report (Art. 21(3))