公开(公告)号：US11835298B2

公开(公告)日：2023-12-05

申请号：US17704632

申请日：2022-03-25

Applicant: Valmet Technologies Oy

Inventor： Pekka Lehtonen

IPC: F28D13/00 ,  F22B31/00 ,  F23C10/10 ,  F28F9/22

CPC classification number: F28D13/00 ,  F22B31/0084 ,  F23C10/10 ,  F28F9/22 ,  F23C2206/103

Abstract: A heat exchanger (10) suitable for recovering heat from bed material of a fluidized bed boiler (1). The heat exchanger (10) comprises first and second heat exchanger tubes (810, 820) and first and second feeding chambers (310, 320) configured to supply bed material to the first and second heat exchanger tubes (810, 820), respectively. The first heat exchanger tubes (810) are arranged on a first side of a plane (P) that intersects the first feeding chamber (310) and the second heat exchanger tubes (820) are arranged on a second side of the plane (P). The first feeding chamber (310) is configured to supply bed material to the second feeding chamber (320).

公开(公告)号：US20230183923A1

公开(公告)日：2023-06-15

申请号：US18079731

申请日：2022-12-12

Applicant: Valmet Technologies Oy

Inventor： Tuuli Silomaa

IPC: D21F7/08 ,  D02G3/02 ,  D02G3/44

CPC classification number: D21F7/08 ,  D02G3/02 ,  D02G3/447 ,  D10B2101/00 ,  D10B2201/24 ,  D10B2331/02 ,  D10B2331/04 ,  D10B2331/021 ,  D10B2401/063 ,  D10B2505/02

Abstract: A sleeve roll belt (10) has an inner surface (11) and an outer surface (12). The belt has a body (15) and a reinforcing structure (30). The reinforcing structure (30) has first yarns (31) arranged to a first direction (D1) of the belt, and second yarns (32) arranged to a second direction (D2) of the belt. The reinforcing structure (30) also has auxiliary yarns (31b, 31c) arranged parallel or substantially parallel to the first direction (D1) of the belt, wherein the auxiliary yarns are arranged to a depth of greater than a depth of the first yarns, measured from the outer surface (12) of the body (15) to an outer surface (31-o, 31b-o) of each yarn (31, 31b, 31c) in the depth direction of the belt, and a diameter of the auxiliary yarns is at least 20% smaller than a diameter of the first yarns.

公开(公告)号：US20230065169A1

公开(公告)日：2023-03-02

申请号：US17890118

申请日：2022-08-17

Applicant: Valmet Technologies Oy

Inventor： Johan EMILSSON ,  Sanjay YALLURE

IPC: B04C9/00

Abstract: A canister which has a substantially cylindrical form and comprises an innermost compartment located around an imaginary center axis of the cylindrical form and extending longitudinally in axial direction of the canister. The canister comprises cleaner cones, which have a substantially cone-like form with a hollow inside and which cleaner cones are removably mounted to the canister and located in the canister such, that narrow ends of cone form of the cleaner cones extend to the innermost compartment and wide ends of the cone form of the cleaner cones extend to the cylindrical circumference of the canister. The cleaner cones comprise covers and the cleaner cones are mounted such that cover of the cleaner cone is outside the canister. The canister further comprises an inspection light source configured to provide a visible indication of status of a cleaner cone of the canister in view of possible plug in the cleaner cone, when the light source is in operation.

公开(公告)号：US20220349309A1

公开(公告)日：2022-11-03

申请号：US17732103

申请日：2022-04-28

Applicant: Valmet Technologies Oy

Inventor： Håkan Sjöström ,  Tuomas Himanka

IPC: F01D5/14 ,  F01D5/02 ,  F01D9/02

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：US11486090B2

公开(公告)日：2022-11-01

申请号：US16771509

申请日：2018-12-13

Applicant: Valmet Technologies Oy

Inventor： Matti Kytö

IPC: D21C11/08 ,  D21C7/08 ,  F23C6/04 ,  F23C7/06 ,  F23G7/06

Abstract: A method for burning primary fuel (F1), wherein the primary fuel (F1) comprises at least a first compound containing nitrogen and a second compound comprising sulfur. The method comprises producing primary combustion gas (G1) having a temperature of at least 450° C. and comprising oxygen; feeding the primary fuel (F1) and the primary combustion gas (G1) to a primary process zone (Z1) of a furnace (200); feeding tertiary combustion gas (G3) to a secondary process zone (Z2) of the furnace (200); letting the primary fuel (F1), the primary combustion gas (G1), and/or their reaction products to move from the primary process zone (Z1) via the secondary process zone (Z2) to a tertiary process zone (Z3) of the furnace (200); and feeding quaternary combustion gas (G4) comprising oxygen to the tertiary process zone (Z3) of the furnace (200). An embodiment comprises collecting the primary fuel (F1) from a pulp process. A corresponding system.

公开(公告)号：US20220325961A1

公开(公告)日：2022-10-13

申请号：US17704632

申请日：2022-03-25

Applicant: Valmet Technologies Oy

Inventor： Pekka LEHTONEN

IPC: F28D13/00 ,  F23C10/10 ,  F22B31/00 ,  F28F9/22

Abstract: A heat exchanger (10) suitable for recovering heat from bed material of a fluidized bed boiler (1). The heat exchanger (10) comprises first and second heat exchanger tubes (810, 820) and first and second feeding chambers (310, 320) configured to supply bed material to the first and second heat exchanger tubes (810, 820), respectively. The first heat exchanger tubes (810) are arranged on a first side of a plane (P) that intersects the first feeding chamber (310) and the second heat exchanger tubes (820) are arranged on a second side of the plane (P). The first feeding chamber (310) is configured to supply bed material to the second feeding chamber (320).

公开(公告)号：US20220251782A1

公开(公告)日：2022-08-11

申请号：US17628147

申请日：2020-09-03

Applicant: Valmet Technologies Oy

Inventor： Jorma Naamanka ,  Juha Nieminen

IPC: D21F7/10 ,  D21F7/08 ,  D21F7/00

Abstract: A fabric for a paper or pulp technology has a longitudinal direction (MD) and a cross direction (CMD), and a first surface (FS) and a second surface (SS) in a fabric thickness direction (TD). The fabric (1) extends in the cross direction (CMD) from a first edge (FG) to a second edge (SG). The fabric (1) has an adaptable medium comprising at least one sensor. The adaptable medium is a deformable structure that adapts to the fabric where it is inserted and may be a string or a sheet configured to detect temperature, temperature profile, wear, volatile organic compounds (VOC), humidity, pH, microbial level, organic and inorganic material content, dirt content, flow rate and flow velocity field, or pressure in a nip. The invention also relates to a method for manufacturing a fabric for a paper or pulp technology.

公开(公告)号：US20220161267A1

公开(公告)日：2022-05-26

申请号：US17103398

申请日：2020-11-24

Applicant: Valmet Technologies Oy

Inventor： Greg Sleeper ,  Sanjay Yallure

IPC: B02C7/12

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：US11339536B2

公开(公告)日：2022-05-24

申请号：US16977066

申请日：2019-03-01

Applicant: Valmet Technologies Oy

Inventor： Jani Turunen ,  Marko Kovanen ,  Heikki Kettunen

IPC: D21G1/02 ,  B65H27/00 ,  D21C9/00 ,  D21H11/18 ,  D21H23/58 ,  B82Y30/00

Abstract: The invention relates to a roll for use in a manufacture of a fibrous web, which comprises cellulosic fibers. The roll comprises a roll body with a cylindrical surface, and a roll cover, which is arranged to cover the cylindrical surface of the roll body. The cover has a functional layer, which has a polymer matrix and reinforcing material in the form of functional particles and/or functional fibers embedded in the polymer matrix. The functional particles and/or functional fibers has nanocellulose material. The invention relates also to the use of the roll.

公开(公告)号：US20220154974A1

公开(公告)日：2022-05-19

申请号：US17526366

申请日：2021-11-15

Applicant: Valmet Technologies Oy

Inventor： Mikko PAAVOLA

IPC: F24H1/44 ,  F24H8/00 ,  F24D3/18 ,  F24D10/00 ,  F24D19/10

Abstract: A method and an arrangement for recovering heat from flue gas of a boiler (10). The method comprises passing the flue gas (G) of the boiler though a flue gas cooling unit (1), cooling the flue gas (G) by transferring heat from the flue gas (G) into a circulation (3) of a flue gas cooling liquid (CL), transferring heat energy of said flue gas cooling liquid (CL) into a heat pump (2), and arranging the heat pump (2) for receiving heat energy also from a circulation arrangement (8) of a district cooling system. The heat pump (2) is coupled to a circulation arrangement (6) of a district heating system, wherein the method further comprises transferring in the heat pump (2) heat energy (H) received from said cooling liquid (CL) and from said circulation arrangement (8) of district cooling system into said circulation arrangement (6) of district heating system, for lowering the temperature of said flue gas cooling liquid (CL) and cooling fluid of said district cooling system, and raising the temperature of heating fluid of said district heating system.