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1. (WO2019048616) INLINE DILUTION OF MICROFIBRILLATED CELLULOSE
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/048616 International Application No.: PCT/EP2018/074141
Publication Date: 14.03.2019 International Filing Date: 07.09.2018
IPC:
D21B 1/36 (2006.01) ,D21D 1/20 (2006.01) ,D21D 1/34 (2006.01)
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
B
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
1
Fibrous raw materials or their mechanical treatment
04
by dividing raw materials into small particles, e.g. fibres
12
by wet methods, by the use of steam
30
Defibrating by other means
36
Explosive disintegration by sudden pressure reduction
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
D
TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
1
Methods of beating or refining; Beaters of the Hollander type
20
Methods of refining
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
D
TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
1
Methods of beating or refining; Beaters of the Hollander type
20
Methods of refining
34
Other mills or refiners
Applicants:
BORREGAARD AS [NO/NO]; Hjalmar Wessels vei 6 1721 Sarpsborg, NO
Inventors:
OPSTAD, Anne; NO
WIKEBY, Jarle; NO
ØVREBØ, Hans Henrik; NO
Agent:
WALLINGER RICKER SCHLOTTER TOSTMANN; Dr. Holger Tostmann Patent- und Rechtsanwälte Partnerschaft mbB Zweibrückenstraße 5-7 80331 Munich, DE
Priority Data:
17189922.207.09.2017EP
Title (EN) INLINE DILUTION OF MICROFIBRILLATED CELLULOSE
(FR) DILUTION INTÉGRÉE DE CELLULOSE MICROFIBRILLÉE
Abstract:
(EN) The present invention relates a process and a system for the point-of-use dilution of microfibrillated cellulose (MFC) from a higher solids content to a lower solids content, for example from a solids content in the range of 5 % weight by weight ("w/w") - 50 % w/w, preferably 5 % w/w - 30 % w/w, further preferably 5 % w/w - 15 % w/w, down to a solids content of below 7 % w/w, preferably below 5 % w/w, preferably to a solids content of 0.01 % w/w - 5 % w/w, further preferably to a solids content of 0.1 % w/w - 3 % w/w. The process at least comprises the following steps: (i) providing microfibrillated cellulose in a solvent, wherein the solids content is in the range of 5 % weight by weight ("w/w") - 50 % w/w, preferably 5 % w/w - 30 % w/w, further preferably 5 w/w - 15 % w/w; (ii) subjecting said microfibrillated cellulose from step (i) to a dilution step in a rotor-stator mixer; (iii) simultaneously to step (ii): injecting solvent into the rotor-stator mixer, or into a volume segment upstream of the rotor-stator mixer, in order to lower the solids content of the microfibrillated cellulose in the rotor-stator mixer.
(FR) La présente invention concerne un procédé et un système pour la dilution au point d'utilisation de cellulose microfibrillée (MFC) depuis une teneur en solides plus élevée jusqu'à une teneur en solides plus faible, par exemple à partir d'une teneur en solides comprise entre 5% en poids ("p/p") et 50% p/p, de préférence entre 5% p/p et 30% p/p, de préférence entre 5% p/p et 15% p/p, jusqu'à une teneur en solides inférieure à 7% p/p, de préférence inférieure à 5% p/p, de préférence à une teneur en solides entre 0,01% p/p et 5% p/p, de préférence encore à une teneur en solides entre 0,1% p/p et 3% p/p. Le procédé comprend au moins les étapes suivantes: (i) fournir de la cellulose microfibrillée dans un solvant, la teneur en solides étant comprise entre 5% en poids ("p/p") et 50% p/p, de préférence entre 5% p/p et 30% p/p, de préférence encore entre 5% p/p et 15% p/p; (ii) soumettre ladite cellulose microfibrillée de l'étape (i) à une étape de dilution dans un mélangeur rotor-stator; (iii) simultanément à l'étape (ii): injecter un solvant dans le mélangeur rotor-stator, ou dans un segment de volume en amont du mélangeur rotor-stator, afin de réduire la teneur en solides de la cellulose microfibrillée dans le mélangeur rotor-stator.
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Designated States: 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, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)