Patent SG-11201809084R-A (SG)
Title: Process for hydraulic conveying of polyolefin pellets
Inventor: RÄSÄNEN JUKKA
IPC: F26B17/00
Filed: 2017-05-09
Abstract: 2.1 1' 3. P . a tm 3 1.5 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 16 November 2017 (16.11.2017) WIPO I PCT omit mum 01°111111°1mm im m1111E11 oimIE (10) International Publication Number WO 2017/194488 Al (51) International Patent Classification: B29B 9/06 (2006.01) B29B 9/16 (2006.01) B29B 9/12 (2006.01) F26B 17/00 (2006.01) (21) International Application Number: PCT/EP2017/060968 (22) International Filing Date: 09 May 2017 (09.05.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16169647.1 13 May 2016 (13.05.2016) EP (71) Applicant: BOREALIS AG [AT/AT]; IDZ Tower Wa- gramer Strasse 17-19, 1220 Vienna (AT). (72) Inventors: RASANEN, Jukka; Kriikuntie 4, 06750 Tolkkinen (FI). ZITTING, Samuli; Vanamonkuja 7, 04300 Tuusula (Fl). SLEIJSTER, Henry; Lindestraat 4A, 6101ES Echt (NL). BERGSTRA, Michiel; Prins Boudewi- jnlaan 3 bus 15, 2600 Berchem (BE). VIJAY, Sameer; Las- tenstrasse 13/233, 4020 Linz (AT). (74) Agent: KADOR & PARTNER; Corneliusstr. 15, 80469 Munich (DE). (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, (54) Title: PROCESS FOR HYDRAULIC CONVEYING OF POLYOLEFIN PELLETS Figure 1. (57) : Process for hydraulic conveying of polyolefin pellets comprising the steps of: (i) extruding molten polyolefin into strands and cutting the strands into pellets in an underwater pelletiser (A); (ii) withdrawing a first pellet suspension stream (1.1) from the pelletiser; (iii) concentrating the first pellet suspension stream in a first pellet separator (B); (iv) passing the concentrated pellet stream (1.4) to a hydraulic conveying line through a first vessel (D) and mixing it with water thereby producing a second pellet suspension stream (1.5); (v) withdrawing the second pellet suspension stream from the first vessel and passing it to a second pellet separator (E); (vi) separating the pellets from water in the second pellet separator thereby creating a second water stream (1.6) and a dry pellet stream (1.10) and passing the second water stream back to the first vessel; wherein any one of the first or second pellet suspension stream or the dry pellet stream comprises an antiblock. [Continued on next page] WO 2017/194488 Al MIDEDIMOMOIDEIROIDEMOMOIROMMODEVOIS 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))