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1. (WO2018143886) HEAT TRANSFER TUBE AND METHOD FOR MANUFACTURING A HEAT TRANSFER TUBE
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Pub. No.: WO/2018/143886 International Application No.: PCT/SE2018/050090
Publication Date: 09.08.2018 International Filing Date: 02.02.2018
IPC:
B01D 1/06 (2006.01) ,D21C 11/10 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
1
Evaporating
06
Evaporators with vertical tubes
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
11
Regeneration of pulp liquors
10
Concentrating spent liquor by evaporation
Applicants:
VALMET AB [SE/SE]; SE-851 94 Sundsvall, SE
Inventors:
PETTERSSON, Krister; SE
APEL, Martin; SE
Agent:
SVENSSON, Niklas; SE
Priority Data:
1750094-303.02.2017SE
Title (EN) HEAT TRANSFER TUBE AND METHOD FOR MANUFACTURING A HEAT TRANSFER TUBE
(FR) TUBE DE TRANSFERT DE CHALEUR, ET PROCÉDÉ DE FABRICATION DE TUBE DE TRANSFERT DE CHALEUR
Abstract:
(EN) The invention relates to a heat transfer tube (9) for falling film evaporation having a heating medium surface (21 ) to be heated by a heating medium, a falling film surface (20) to have spent liquor passing over it, and being made from an sheet metal material. The falling film surface of the heat transfer tube is equipped with a multitude of wire bumps (WB), each wire bump being spaced apart along the longitudinal axis (CC) of the heat transfer tube from a neighbouring wire bump by 3-300 mm, said wire bumps (WB) having a height (h) in the range 0.3 to 5.0 mm, a width (w) in the range 0.3-5.0 mm, and an inclination angle (a) versus a plane orthogonal to a longitudinal axis (CC) of the heat transfer tube in a range of 0-70 degrees. The invention also relates to a method for manufacturing said heat transfer tube.
(FR) L'invention porte sur un tube de transfert de chaleur (9) pour une évaporation de film tombant ayant une surface de milieu chauffant (21 ) devant être chauffée par un milieu de chauffage, une surface de film tombant (20) pour avoir une liqueur usée passant sur celui-ci, et étant réalisée à partir d'un matériau métallique en feuille. La surface de film tombant du tube de transfert de chaleur est équipée d'une multitude de bosses de fil (WB), chaque bosse de fil étant espacée le long de l'axe longitudinal (CC) du tube de transfert de chaleur à partir d'une bosse de fil voisine de 3 à 300 mm, lesdites bosses de fil (WB) ayant une hauteur (h) dans la plage de 0,3 à 5,0 mm, une largeur (w) dans la plage de 0,3 à 5,0 mm, et un angle d'inclinaison (a) par rapport à un plan orthogonal à un axe longitudinal (CC) du tube de transfert de chaleur dans une plage de 0 à 70 degrés. L'invention concerne également un procédé de fabrication dudit tube de transfert de chaleur.
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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)