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1. (WO2018160115) STEAM EVACUATION IN A PULP OR FIBER REFINER
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Pub. No.: WO/2018/160115 International Application No.: PCT/SE2018/050116
Publication Date: 07.09.2018 International Filing Date: 08.02.2018
IPC:
D21D 1/30 (2006.01) ,B02C 7/12 (2006.01) ,D21B 1/14 (2006.01)
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
30
Disc mills
B PERFORMING OPERATIONS; TRANSPORTING
02
CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
C
CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
7
Crushing or disintegrating by disc mills
11
Details
12
Shape or construction of discs
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
14
Disintegrating in mills
Applicants:
VALMET AB [SE/SE]; 851 94 Sundsvall, SE
Inventors:
LÖNNGREN, Karl; SE
Agent:
AROS PATENT AB; Box 1544 751 45 Uppsala, SE
Priority Data:
1750234-503.03.2017SE
Title (EN) STEAM EVACUATION IN A PULP OR FIBER REFINER
(FR) ÉVACUATION DE VAPEUR DANS UN RAFFINEUR DE PÂTE OU DE FIBRES
Abstract:
(EN) A refining disc (6) in a defibrator (1) for refining fibrous material is provided with non-central openings (11) for allowing steam developed in the refining space (2) during refining to flow from the front side to the backside of the refining disc (6), where the front side is facing a second refining disc (5) and the backside is facing away from the second refining disc (5). The refining disc (6) also comprises a central hole (12) for allowing steam (8b) to flow from the backside to the front side at the rotational center of the refining disc (6), and escape from the defibrator (1) backwards through the feed screw (3a) without passing through the fibrous material (7) being refined in the refining space (2).
(FR) Un disque (6) de raffinage dans un défibreur (1) servant à raffiner un matériau fibreux est muni d'ouvertures non centrales (11) servant à permettre à de la vapeur développée dans l'espace (2) de raffinage pendant le raffinage de s'écouler de la face avant à la face arrière du disque (6) de raffinage, la face avant faisant face à un second disque (5) de raffinage et la face arrière étant orientée à l'opposé du second disque (5) de raffinage. Le disque (6) de raffinage comporte également un trou central (12) servant à permettre à de la vapeur (8b) de s'écouler de la face arrière à la face avant au centre de rotation du disque (6) de raffinage, et de s'échapper du défibreur (1) vers l'arrière à travers la vis (3a) d'alimentation sans traverser le matériau fibreux (7) en cours de raffinage dans l'espace (2) de raffinage.
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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 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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)