Patent SG-11201810666S-A (SG)
Title: Process and apparatus for separating gases
Inventor: WU ZHIMIN
IPC: B01D53/22
Filed: 2017-05-31
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 1111111111111111111 1111111111111111111111111111111111111111111111111111011111011110111111 Organization International Bureau (10) International Publication Number (43) International Publication Date ......0\" WO 2017/206908 Al 07 December 2017 (07.12.2017) WIP0 I PCT (51) International Patent Classification: BOLD 53/22 (2006.01) Published: — with international search report (Art. 21(3)) (21) International Application Number: PCT/CN2017/086623 (22) International Filing Date: 31 May 2017 (31.05.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: PCT/CN2016/084152 31 May 2016 (31.05.2016) CN (71) Applicant: EVONIK SPECIALTY CHEMICALS (SHANGHAI) CO., LTD. [CN/CN]; No.68 Lianhe Road, Chemical Industry Park, Shanghai, 201507 (CN). (72) Inventors: WU, Zhimin; Block 164-801, East Lake Garden, No.2 Wansheng Street, Suzhou Industrial Park, _ Suzhou, Jiangsu 215000 (CN). CHEN, Xiaojue; Chundong Rd., Xinzhuang Industry Park 55, Shanghai 201108 (CN). — = WILLEMANN, Ricardo Luiz; Unit 413, Green Valley Villa No.1500, Hami Road, Shanghai 200336 (CN). = (74) Agent: NTD PATENT & TRADEMARK AGENCY = LIMITED; 10th Floor, Block A, Investment Plaza, 27 Jin- rongdajie, Xicheng District, Beijing 100033 (CN). =(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. = = (84) Designated States (unless otherwise indicated, for every = kind ARIPO of regional protection available): (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 AT, BE, BG, CH, CY, CZ, DE, DK, (AL, 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, 1-1 TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). GC 0 C:N (54) Title: PROCESS AND APPARATUS FOR SEPARATING GASES 0 (57) : The invention relates to a process and apparatus for separation of gas mixtures with reduced maintenance costs. The ei —process and the apparatus consist of a feed stream separation stage (1), and a retentate separation stage (2), of which both are membrance IN 1-1 separation stages, wherein the first retentate stream (7) is heated to temperature higher than the temperature of the feed stream (5), © before it is introduced to the retentate separation stage (2), and the total capacity of the membranes used in the retentate separation stage N (2) is higher than the total capacity of the membranes used in the feed stream stage (1). O