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1. (WO2013144446) A METHOD AND A SYSTEM FOR ISOLATING XYLAN FROM PLANT MATERIAL, AS WELL AS XYLAN, CALCIUM CARBONATE, AND CELLULOSE FIBRE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/144446 International Application No.: PCT/FI2013/050338
Publication Date: 03.10.2013 International Filing Date: 26.03.2013
IPC:
C08B 37/14 (2006.01) ,B01J 8/02 (2006.01) ,D21C 3/02 (2006.01) ,C01D 1/04 (2006.01) ,C01F 11/18 (2006.01)
Applicants: UPM-KYMMENE CORPORATION[FI/FI]; Alvar Aallon katu 1 FI-00100 Helsinki, FI
STORA ENSO OYJ[FI/FI]; Kanavaranta 1 FI-00160 Helsinki, FI
Inventors: KROGERUS, Björn; FI
FUHRMANN, Agneta; FI
LAINE, Christiane; FI
Agent: TAMPEREEN PATENTTITOIMISTO OY; Hermiankatu 1 B FI-33720 Tampere, FI
Priority Data:
2012534527.03.2012FI
Title (EN) A METHOD AND A SYSTEM FOR ISOLATING XYLAN FROM PLANT MATERIAL, AS WELL AS XYLAN, CALCIUM CARBONATE, AND CELLULOSE FIBRE
(FR) PROCÉDÉ ET SYSTÈME POUR ISOLER DU XYLANE À PARTIR DE MATIÈRE VÉGÉTALE, AINSI QUE LE XYLANE, LE CARBONATE DE CALCIUM, ET LES FIBRES DE CELLULOSE
Abstract: front page image
(EN) The invention relates to a method for isolating xylan from plant material. In the method, cellulose fibres which contain xylan are used, advantageously cellulose fibres from hardwood; and xylan is extracted (20) from said cellulose fibres by means of sodium hydroxide for forming an extract solution (17) that contains xylan; cellulose fibres are removed from said mixture that contains cellulose fibres and extract solution (17), for isolating said extract solution from said mixture; carbon dioxide (14) is added to said extract solution (17) for isolating xylan, wherein liquid brightener (18) and precipitated xylan (12) are formed; calcium hydroxide (16) is added to said isolated brightener (18), for forming precipitated calcium carbonate and liquid sodium hydroxide (15); and sodium hydroxide is removed from said mixture that contains sodium hydroxide and precipitated calcium carbonate, for isolating calcium carbonate from said mixture. Furthermore, the invention relates to a system for isolating xylan from plant material, and to xylan, calcium carbonate, cellulose fibre and use of xylan.
(FR) L'invention concerne un procédé pour isoler du xylane à partir de matière végétale. Dans le procédé, des fibres de cellulose contenant du xylane sont utilisées, de préférence des fibres de cellulose à partir de bois de feuillus; et le xylane est extrait (20) à partir desdites fibres de cellulose au moyen d'hydroxyde de sodium pour former une solution d'extrait (17) qui contient le xylane; les fibres de cellulose sont éliminées dudit mélange qui contient des fibres de cellulose et la solution d'extrait (17) pour isoler ladite solution d'extrait dudit mélange; du dioxyde de carbone (14) est ajouté à ladite solution d'extrait (17) pour isoler le xylane, l'éclaircissant liquide (18) et le xylane précipité (12) étant formés; de l'hydroxyde de calcium (16) est ajouté audit éclaircissant isolé, (18) pour former du carbonate de calcium précipité et de l'hydroxyde de sodium liquide (15); et l'hydroxyde de sodium est retiré dudit mélange qui contient de l'hydroxyde de sodium et du carbonate de calcium précipité, pour isoler le carbonate de calcium dudit mélange. En outre, l'invention concerne un système permettant d'isoler le xylane à partir de matière végétale, et le xylane, le carbonate de calcium, les fibres de cellulose et l'utilisation du xylane.
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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: ???LANGUAGE_SYMBOL_FI??? (FI)