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公开(公告)号：US20210108367A1
公开(公告)日：2021-04-15
申请号：US17067542
申请日：2020-10-09
Applicant: Valmet Technologies Oy
Inventor： Ramon Muñoz
IPC: D21D1/26
Abstract: A refiner for refining lignocellulose containing fiber material has two substantially oppositely positioned refining elements (6, 6a, 6b, 9) with refining surfaces (8, 8a, 8b, 11, 11a, 11b) with blade bars (25, 27) and grooves (26, 28). Opposed refining surfaces face each other forming a refining chamber (15, 15a, 15b) which receives fiber material to be refined. The refiner has two feed channels (19a, 19b) for feeding into the refiner at least one fiber material fraction (FM1, FM2) to be refined, and two refining zones (21a, 21b) with at least one different refining surface characteristic between the refining zones (21a, 21b). Each refining zone (21a, 21b) is intended to refine one fiber material fraction (FM1, FM2) of the at least one fiber material fraction (FM1, FM2). There is at least one discharge channel (23, 23a, 23b) for discharging out of the refiner at least one flow of refined material.
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公开(公告)号：US10711198B2
公开(公告)日：2020-07-14
申请号：US15565375
申请日：2016-04-13
Applicant: Valmet Technologies Oy , Fortum Oyj
Inventor： Jukka Heiskanen , Sara Kaerki , Erkki Vaelimaeki , Reyhaneh Shenassa , Jussi Maentyniemi , Pekka Jokela , Andrea Gutierrez , Joakim Autio , Janne Asikkala
Abstract: A method for forming catalytically treated pyrolytic vapor product from pyrolyzable material, the method comprising burning fuel in a fluidized bed boiler, thereby heating some particulate material; transferring at least some of the heated particulate material or some other heated particulate material to a pyrolysis reactor to pyrolyze some pyrolyzable material in the pyrolysis reactor; and conveying at least some pyrolytic vapor through a catalyst bed comprising catalyst material; and conveying at least part of the formed side products upstream back to the process; thereby producing the catalytically treated pyrolytic vapor product in an resource efficient manner. In addition, a system configured to produce catalytically treated pyrolytic vapor product from pyrolyzable material. The system comprises a fluidized bed boiler; a pyrolysis reactor; a catalytic reactor; means for conveying some heated particulate material to the pyrolysis reactor; a pipeline for conveying at least some pyrolytic vapor from the pyrolysis reactor into the catalytic reactor and means for conveying at least part of the formed side products upstream back to the process for recovering heat and chemical energy bound to the side products.
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公开(公告)号：US20200054974A1
公开(公告)日：2020-02-20
申请号：US16608969
申请日：2018-04-27
Applicant: VALMET TECHNOLOGIES OY
Inventor： Mika KARAILA , Joona NIKUNEN , Teemu ANTIKAINEN
IPC: B01D35/143 , B01D29/00 , B01D29/41 , B01D33/23
Abstract: The invention relates to a system for detecting damages of filter fabric (8) with continuous disc filters (1) where the system comprises of pressure sensor element (41) that is attached into a filter sector (5) so that it measures the pressure inside (11) the filter sector and is connected with a CPU (42) and a radio unit (43) that periodically transmits the measured pressure values to a receiver (R) that receives the transmitted measurements and compares the measurements using processing means (55) with previously received values and detects damages by detecting significant pressure difference.
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公开(公告)号：US20190382928A1
公开(公告)日：2019-12-19
申请号：US16479325
申请日：2018-03-21
Applicant: VALMET TECHNOLOGIES OY
Inventor： Rauno ENQVIST , Juha PAAVOLAINEN
Abstract: The present invention relates to an industrial textile (1) having a longitudinal direction (MD) and a cross direction (CMD) and a first surface and a second surface, the industrial textile (1) extending in the cross direction from a first edge (E1) to a second edge (E2). The industrial textile (1) comprises a double warp which comprises a first warp comprising first machine direction yarns (U1, U2) and a second warp comprising second machine direction yarns (L1, L2). The yarns (U1, U2) of the first warp are arranged in above the yarns (L1, L2) of the second warp and the yarns of the first warp are at least partially offset in respect of the yarns of the second warp. The industrial textile comprises a weft comprising cross machine direction yarns (W1, W2, W3, W4). The yarns (U1, U2) of the first warp and the yarns (W1, W2, W3, W4) of the weft bind themselves to each other according to a first predetermined pattern and the yarns (L1, L2) of the second warp and the yarns (W1, W2, W3, W4) of the weft bind themselves to each other according to a second predetermined pattern. The first predetermined pattern and the second predetermined pattern form a textile structure which comprises the cross machine direction yarns (W1, W2, W3, W4) at least on two different levels in the thickness direction of the industrial textile (1).
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公开(公告)号：US20190218463A1
公开(公告)日：2019-07-18
申请号：US16360816
申请日：2019-03-21
Applicant: Valmet Technologies Oy
Inventor： Teppo Riihimaeki , Antti Kaura , Lauri Kokko , Joakim Autio
CPC classification number: C10G31/09 , B01D29/0095 , B01D29/0097 , B01D29/114 , B01D29/117 , B01D29/118 , B01D29/56 , B01D2201/184 , C10G2300/208
Abstract: A filter for filtering pyrolysis oil and an arrangement. The filter is a split-flow filter (1, 1a, 1b), comprising a filter element (12), comprising plurality of apertures (17) extending through the filter element (12), a receiving channel (13) for receiving a flow (F) of pyrolysis oil to be filtered and for supplying said flow on first side (A) of the filter element (12), a main discharge channel (14) arranged on the first side (A) of the filter element (12) for discharging the portion of the flow (F) of pyrolysis oil having not penetrated through the filter element (12), and a filtrate channel (15) arranged on second side (B) of the filter element (12) for discharging the portion of the flow (F) of pyrolysis oil having penetrated through the filter element (12).
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Patent Agency Ranking
公开(公告)号：US20180369724A1
公开(公告)日：2018-12-27
申请号：US16019251
申请日：2018-06-26
Applicant: Valmet Technologies Oy
Inventor： Rolf Oswaldson , Kent Strid
Abstract: A vat (1) with an inlet (2) for a suspension. A rotatable inner axial part (5) with peripheral channels (7) and at least one disc-shaped filter (8) mounted to the inner axial part (5). Within the vat the suspension is contained between partition walls (16A) in which the filters rotate. The filter (8) has inner flow channels (42) for transporting filtrate to channels (7) in the inner axial part (5). The filtrate from the channels (7) is combined in one end of the inner axial part (5) into at least one vacuum forming downpipe (12). Sprays (13) (15) detach material deposited on the filters. Mounted to the top of the partition walls (16A), which form receiving chutes (16), are guide plates (14A) for guiding material down into the chutes. Spray nozzles (14B) are located below the guide plate(s) and between the partition walls (16A) to clean the filtering surface (10).
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公开(公告)号：US10023803B2
公开(公告)日：2018-07-17
申请号：US14441812
申请日：2013-11-07
Applicant: Valmet Technologies Oy
Inventor： Joakim Autio , Timo Honkola
Abstract: Solid fuel in the form of particles is supplied to a pyrolyzer, and pyrolysis conditions are maintained in the pyrolyzer for separating condensable gaseous substances from the fuel. Heat required by the pyrolysis conditions is supplied at least partly with solid fluidized bed material which passes through the pyrolyzer simultaneously as it is fluidized by fluidizing gas in the pyrolyzer. Condensable gaseous substances separated from the fuel are conveyed from the pyrolyzer to a condenser, in which they are separated as so-called pyrolysis oil in liquid form, and solid fluidized bed material taken from the pyrolyzer and containing combustible pyrolysis residue originating from the fuel is circulated through a gasifier, in which product gas, which is burnt in a boiler or a kiln, is formed from the pyrolysis residue.
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公开(公告)号：US09989318B2
公开(公告)日：2018-06-05
申请号：US15028700
申请日：2014-09-29
Applicant: VALMET TECHNOLOGIES OY
Inventor： Vesa Kainu
CPC classification number: F28F1/12 , F22B31/0007 , F22B31/0015 , F22B37/06
Abstract: A heat exchanger pipe in a flow duct for gases. The pipe first section has a second section with an inner pipe for transferring heat transfer medium; an outer pipe that radially encloses a part of the inner pipe; and a medium layer between the outer pipe and the part of the inner pipe. The second section of the heat exchanger pipe bends less than 90 degrees. Furthermore, the first section is insulated in its entirety, or non-insulated in the vicinity of other heat recovery surfaces only. In the device the temperature of the heat transfer medium flowing in the inner pipe is at least 500° C., the temperature of the outer surface of the outer pipe is higher than 600° C., or an auxiliary agent is fed to the thermal device.
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公开(公告)号：US09976739B2
公开(公告)日：2018-05-22
申请号：US14442378
申请日：2013-11-07
Applicant: Valmet Technologies Oy
Inventor： Vesa Kainu , Jukka-Pekka Leppälä
Abstract: An air nozzle arrangement for a fluidized bed boiler, comprising an air feed pipe and an air nozzle which limit an air feed duct configured to supply air to the furnace of the fluidized bed boiler. The air nozzle arrangement comprises a surface configured to guide coarse material along said surface. At least part of said surface is thermally insulated from the air nozzle and/or the air feed pipe. Furthermore, at least part of said surface is configured to protect at least part of said air nozzle and/or air feed pipe. Thus, the temperature of said surface is configured to be high when the fluidized bed boiler is in operation, whereby the solidification of molten material of the fluidized bed in the air nozzle arrangement is reduced.
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30.发明申请公开(公告)号：US20160245599A2
公开(公告)日：2016-08-25
申请号：US14649542
申请日：2013-11-25
Applicant: Valmet Technologies Oy
Inventor： Joni Maunula
CPC classification number: F28G15/003 , F23J3/023 , F23M11/042 , G01B11/0616 , G01B11/0625
Abstract: An arrangement of a thermal device and a surface reflecting and/or scattering electromagnetic radiation in the inner part of the thermal device. A source of electromagnetic radiation is arranged at a first distance (L1) from the surface, and a detector of electromagnetic radiation is arranged at a second distance (L2) from the surface. The source is configured to emit radiation to the surface, which is reflected and/or scattered from the surface as reflected radiation. The detector receives reflected radiation; and the processing unit determines data dependent on the first and/or second distance by the emitted and reflected radiation. A wall of the thermal device has a window or aperture for emitting an optical signal from the light source to the surface. An electromagnetic distance measurement device measures the thickness or the increase in the thickness of a contamination layer from a thermal device.
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