公开(公告)号：US11859911B2

公开(公告)日：2024-01-02

申请号：US17049190

申请日：2019-05-09

Applicant: Valmet Technologies Oy

Inventor： Juha Ojanperä ,  Harri Yli-Rantala

IPC: F16L59/22 ,  F28D1/047 ,  F22B37/10

CPC classification number: F28D1/0477 ,  F16L59/22 ,  F22B37/108

Abstract: A coaxial heat transfer tube (100), comprising a first inner heat transfer tube (110) having straight parts (111, 113, 115, 117) and curved parts (112, 114, 116), a first outer heat transfer tube (120) having straight parts (121, 123, 125, 127) and curved parts (122, 124, 126). The first outer heat transfer tube (120) radially surrounds the first inner heat transfer tube (110) at least within the first primary straight part (121) and the first primary curved part (122). Thermally insulating material (530) has been provided in between a curved part (122) of the first outer heat transfer tube (120) and a curved part (112) of the first inner heat transfer tube (110). Neither straight part (121) nor a curved part (122) of the first outer heat transfer tube (120) comprises a longitudinal seam. A method for making a coaxial heat transfer tube (100).

公开(公告)号：US11732587B2

公开(公告)日：2023-08-22

申请号：US17732103

申请日：2022-04-28

Applicant: Valmet Technologies Oy

Inventor： Håkan Sjöström ,  Tuomas Himanka

IPC: D21D1/22 ,  F01D5/14 ,  F01D5/02 ,  F01D9/02 ,  D21D1/30

CPC classification number: F01D5/14 ,  D21D1/22 ,  D21D1/306 ,  F01D5/02 ,  F01D9/02 ,  F05D2240/30

Abstract: A blade element (4, 8) for a comminution device (1) to comminute fiber material has at least one comminution section (22) with comminution parts (20, 24, 25, 26) and free spaces (21) therebetween, and at least one feed section (23) extending at least partly in a longitudinal direction (X) of the blade element (4, 8), each feed section (23) intended to feed fiber material to the respective comminution section (22). The comminution parts have a first dimension (d20a, d20b, d20c, d24a, d24b, d24c) extending in a circumferential direction (C) of the blade element and a second dimension (e20a, e20b, e20c, e24a, e25a, e26a) extending in the longitudinal direction (X) of the blade element. At the same longitudinal (X) position in the blade element (4, 8) the first dimension of the comminution parts is arranged to increase in the circumferential direction (C) of the blade element toward the feed section.

公开(公告)号：US20230235507A1

公开(公告)日：2023-07-27

申请号：US17754850

申请日：2020-11-06

Applicant: VALMET TECHNOLOGIES OY

Inventor： Tero JORONEN

IPC: D21C11/00 ,  C10G1/00 ,  C10G1/04 ,  C01D3/00 ,  C10G1/08

CPC classification number: D21C11/0007 ,  D21C11/0042 ,  D21C11/0071 ,  D21C11/0078 ,  C10G1/002 ,  C10G1/045 ,  C01D3/00 ,  C10G1/086 ,  C10G2300/202 ,  C10G2300/4006 ,  C10G2300/4012 ,  C10G2300/70 ,  C10G2300/805

Abstract: The invention relates to a method for producing an oil rich fraction (OF) from primary feedstock (FS) that comprises water, first salt, second salt, and biomass. The feedstock (FS) is provided to a first reaction zone (Z1) of a conversion reactor (100), where it is allowed to react at a temperature of at least 350° C. in a pressure of at least 160 bar to form converted primary feedstock. The method comprises separating from the converted primary feedstock a first salt rich fraction (SF1), a second salt rich fraction (SF2), and an oil rich fraction (OF). The method comprises withdrawing the oil rich fraction (OF) from the first reaction zone (Z1) and withdrawing the first salt rich fraction (SF1) and the second salt rich fraction (SF2) from the conversion reactor (100). In the method the first salt rich fraction (SF1) comprises at least some of the first salt dissolved in the water, the second salt rich fraction (SF2) comprises at least some of the second salt in solid form, and at least one of the first salt and the second salt is a salt capable of catalysing the reaction of the biomass of the primary feedstock (FS) with the water of the primary feedstock (FS) to produce the oil rich fraction (OF). A device for the same.

公开(公告)号：US11707742B2

公开(公告)日：2023-07-25

申请号：US17103398

申请日：2020-11-24

Applicant: Valmet Technologies Oy

Inventor： Greg Sleeper ,  Sanjay Yallure

IPC: B02C7/12 ,  D21D1/30 ,  B02C7/06

CPC classification number: B02C7/12 ,  D21D1/303 ,  D21D1/306 ,  B02C7/06

Abstract: An assembly comprising an annular hub with a hub inner surface and a hub outer surface and a rotary third refining member having a central opening within a refining member inner surface. The refining member has at least two equally spaced apart member portions extending radially inwardly from the member inner surface, and the assembly includes a key for connecting the member portions to the hub. The assembly also include an annular cover plate with at least two radially extending spaced apart flanges, each flange overlying a member portion, and at least two spaced apart port plates, each port plate overlying a member portion side opposite the annular cover plate, the spaces between the at least two port plates defining ports from a first stock flow path to a second stock flow path.

公开(公告)号：US20230193558A1

公开(公告)日：2023-06-22

申请号：US18084720

申请日：2022-12-20

Applicant: Valmet Technologies Oy

Inventor： Juha-Pekka Huhtanen ,  Tuomo Aho

IPC: D21F1/00 ,  D21H11/18 ,  D21F9/00 ,  D21F3/08 ,  D21F3/04 ,  D21G9/00 ,  D21F1/80

CPC classification number: D21F1/0009 ,  D21H11/18 ,  D21F9/003 ,  D21F3/08 ,  D21F3/04 ,  D21G9/0027 ,  D21F1/80

Abstract: The invention relates to a system of producing MFC (micro fibrillated cellulose) having a process device (30) of a pulper, a refiner or a screen configured to process MFC suspension to consistency of 0.5-5%. The system has a continuous pressing means (15; 25, 26) configured to dry the MFC suspension to a consistency of 6-60%. A method of producing MFC has at least one process stage (30) which processes a MFC suspension to a consistency of 0.5-5% by a process device (30). In the process stage the MFC suspension is pulped in a pulping stage in a pulper and/or refined in a refining stage by a refiner and/or screened in a screening stage by a screen. The MFC suspension having the consistency of 0.5-5% is dried in a drying stage of continuous pressing (15, 25, 26) by continuous a pressing device (15, 25, 26) to a consistency of 6-60%.

公开(公告)号：US11655589B2

公开(公告)日：2023-05-23

申请号：US17633055

申请日：2020-08-18

Applicant: Valmet Technologies Oy

Inventor： Aino Vettenranta

IPC: D21C11/00 ,  D21C11/10

CPC classification number: D21C11/0071 ,  D21C11/10

Abstract: The specification relates to a method and a system for adjusting pH of green liquor dregs. The method comprises contacting a slurry containing green liquor dregs (100, 200, 300, 400, 500) with flue gas (101, 201, 301, 401, 501). The system comprises a recovery boiler (105) configured to burn black liquor to produce smelt, a smelt dissolving tank (107) configured to dissolve the smelt to produce green liquor comprising green liquor dregs, and a green liquor clarifier/filter (103) and/or a dregs filter (104) configured to separate a slurry containing green liquor dregs (100, 200, 300, 400, 500) from the green liquor. The system further comprises a vessel (102, 202, 302, 402) configured to receive a slurry containing green liquor dregs (100, 200, 300, 400, 500) and a gas inlet (210, 310, 410, 510) configured to convey flue gas (101, 201, 301, 401, 501) to be contacted with the slurry containing green liquor dregs (100, 200, 300, 400, 500).

公开(公告)号：US11619003B2

公开(公告)日：2023-04-04

申请号：US17324930

申请日：2021-05-19

Applicant: Valmet Technologies Oy

Inventor： Antii Poikolainen

IPC: D21F3/02

Abstract: A belt (10) for a sleeve roll forms a closed loop and has an inner surface (11) and an outer surface (12). The belt has an elastic body (15) with an outer surface (15a) and a reinforcing structure (30). The reinforcing structure has first yarns (31a) arranged to a first direction (D1), and second yarns (32a) arranged to a second direction (D2). The second yarns (32a) are arranged, at least partially, on the elastic body (15), and/or the second yarns (32a) are arranged to a depth of equal to or less than 2 mm, measured from the outer surface (15a) of the elastic body to a bottom (32a-i) of the second yarn (32a) in a depth direction of the belt. The invention further relates to a use of a belt. The invention further relates to an arrangement comprising a belt and a sleeve roll.

公开(公告)号：US20230030512A1

公开(公告)日：2023-02-02

申请号：US17867441

申请日：2022-07-18

Applicant: Valmet Technologies Oy

Inventor： Jaakko HAAPANEN

IPC: B65H19/12 ,  B65H19/22

Abstract: An assembly for handling reel spools, comprising linear support rails, having a first end and a second end, arranged parallel to each other, and a reel spool cart arranged on the support rails, the support rails being arranged at a first distance from each other, the first distance being greater than axial length of the reel spool, and the cart being provided with a hoisting device configured to hoist the reel spool vertically from beneath of at least one of the support rails to at least partly above at least one of the support rails.

公开(公告)号：US11505897B2

公开(公告)日：2022-11-22

申请号：US17338471

申请日：2021-06-03

Applicant: Valmet Technologies Oy

Inventor： Hannu Martikainen ,  Tania Rautio ,  Mari Seppänen ,  Seppo Taipale

IPC: D21F7/08 ,  D03D13/00 ,  D21F1/00

Abstract: An industrial textile (6) for manufacturing a fibrous web has first machine direction yarns (1) on the front side (7) which bind to first cross-machine direction yarns (4) in a first pattern, while second machine direction yarns (2) on the back side bind to second cross-machine direction yarns (5) in a second pattern. Third machine direction yarns (3) bind to the first cross-machine direction yarns (4) and the second cross-machine direction yarns (5) in a third pattern. The third pattern has at least one interlacing point (71) on the front side where one of the third machine direction yarns (3) passes over one of the first cross-machine direction yarns (4) and at least one interlacing point (72) on the back side (8) where the same third machine direction yarn (3) passes under one of the second cross-machine direction yarns (5).

公开(公告)号：US11459700B2

公开(公告)日：2022-10-04

申请号：US17127548

申请日：2020-12-18

Applicant: Wetend Technologies Oy ,  Valmet Technologies Oy

Inventor： Antti Ketolainen ,  Jouni Matula ,  Leif Piippola

IPC: D21F1/02

Abstract: A method of and an arrangement for adding at least one additional stock component to an approach flow system (30) of a fiber web machine by mixing the at least one additional stock component to a fibrous stock such that the stock flow is equalized (50) and the at least one additional stock component is introduced to the stock flow by injection mixing (80).