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公开(公告)号：US10358607B2
公开(公告)日：2019-07-23
申请号：US15378837
申请日：2016-12-14
Applicant: Valmet Technologies Oy
Inventor： Teppo Riihimaeki , Antti Kaura , Lauri Kokko , Joakim Autio
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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公开(公告)号：US20190203134A1
公开(公告)日：2019-07-04
申请号：US15776700
申请日：2016-11-10
Applicant: Valmet Technologies Oy
Inventor： Tero Joronen
CPC classification number: C10L10/06 , C10L5/363 , C10L5/442 , C10L5/445 , C10L5/48 , C10L9/12 , C10L10/02 , C10L10/04 , C10L2200/0213 , C10L2200/0272 , C10L2200/029 , C10L2230/02 , C10L2290/08 , C10L2290/141 , C10L2290/148 , C10L2290/22 , C10L2290/28 , C10L2290/30 , C10L2290/46 , C10L2290/48 , C10L2290/545 , Y02E50/10 , Y02E50/14 , Y02E50/30
Abstract: Biomass based fuel configured to reduce chemical and/or mechanical effects of flue gas on heat transfer surfaces. The biomass based fuel comprises steam-exploded biomass and some combustion additive. The combustion additive is selected from a group of additives that are capable of reducing chemical and/or mechanical effects of flue gas on heat transfer surfaces. The combustion additive may comprise fouling-reducing additive and/or an additive reducing corrosion potential. In addition, a method for manufacturing biomass based fuel configured to reduce chemical and/or mechanical effects of flue gas on heat transfer surfaces. The method comprises providing biomass and steam into a reactor; maintaining said biomass and said steam simultaneously in the reactor, in a pressure of at least 10 bar(a) and at a temperature from 180 ° C. to 250 ° C. for at least 2 minutes; and decreasing the pressure in the reactor and/or conveying biomass out of the reactor such that the pressure of the environment of the biomass decreases below 5 bar(a), to produce steam-exploded biomass. The method further comprises adding some combustion additive to the biomass and/or the steam-exploded biomass.
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公开(公告)号：US20190177914A1
公开(公告)日：2019-06-13
申请号：US16323758
申请日：2017-08-17
Applicant: Valmet Technologies Oy
Inventor： Asta HUMALAJOKI , Antti VAELJAE , Heikki AIRIKKALA , Seppo TUOMINIEMI , Peter BJOERKLUND
CPC classification number: D21C11/06 , B01D5/003 , B01D5/0054 , B01D5/0075 , C01B17/60 , C01B17/803 , C01B17/806 , D21C11/0064 , D21C11/04
Abstract: A system (100) for producing aqueous sulphuric acid. The system (100) comprises a first heat exchanger (410) configured to cool water and/or aqueous sulphuric for producing cooled water and/or cooled aqueous sulphuric acid; a pre-cooling unit (200) configured to pre-cool some gas containing sulphur trioxide, the pre-cooling unit (200) comprising an inlet or inlets (212, 214) for receiving [i] the gas containing sulphur trioxide and [ii] the cooled water and/or the cooled aqueous sulphuric acid, an outlet (216) for letting out aqueous sulphuric acid and the gas containing sulphur trioxide, and a first nozzle (220) for spraying the cooled water and/or the cooled aqueous sulphuric acid onto the gas containing sulphur trioxide to cool the gas containing sulphur trioxide. The system further comprises a condensation tower (300) comprising a first inlet (302) for receiving the cooled gas containing sulphur trioxide and aqueous sulphuric acid from the pre-cooling unit (200) and means (320) for circulating the aqueous sulphuric acid within the
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104.发明申请公开(公告)号：US20190048526A1
公开(公告)日：2019-02-14
申请号：US16079877
申请日：2017-02-24
Applicant: Valmet Technologies Oy
Inventor： Heikki Kettunen , Gerald Kramer , Tatu Pitkänen , James Sipprell , Todd Vandenheuvel
CPC classification number: D21G9/0036 , B65H18/26 , B65H2515/314 , B65H2801/84 , G01L5/108
Abstract: The invention relates to a method for monitoring the condition of a continuous element (44) moving in a fiber web or paper finishing machine, said monitoring being performed with a rotating machine element (41), which is equipped with a sensor assembly (24) that measures force or pressure and against which the continuous element moves. In the method, the machine element is made to rotate against the continuous element, a measurement signal (25) is generated between the machine element and the continuous element with the sensor assembly, and a cross-directional profile (21) of force or pressure generated between the machine element and the continuous element is formed from the measurement signal. Said moving continuous element is a fabric (32, 33) installed in a fabric run (22, 23) traveling via the machine element. In the method, the fabric is additionally installed in a fabric run, wherein it moves via said machine element equipped with a sensor assembly, a reference profile (35) is formed for the cross-directional profile after installing the fabric in the fabric run, the cross-directional profile formed from the measurement signal and representing force or pressure generated between the machine element and the fabric is compared with the reference profile, and information (37) is produced from the comparison for monitoring the condition of the fabric. The invention also relates to a corresponding system and a computer program product.
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公开(公告)号：US20180273328A1
公开(公告)日：2018-09-27
申请号：US15933164
申请日：2018-03-22
Applicant: Valmet Technologies Oy
Inventor： Jari Paanasalo , Kenneth Åkerlund , Mikko Veijalainen
CPC classification number: B65H18/26 , B65H18/10 , B65H18/20 , B65H20/02 , B65H23/198 , B65H2513/106 , B65H2515/31 , B65H2553/22 , B65H2220/02 , B65H2220/01
Abstract: This invention relates to a method of controlling the operation of a winder in which method while forming at least one fiber web roll the fiber web is brought on the web roll via a nip formed by a first support drum and the web roll, which first support drum is driven by a first drive assembly (20) applying controllable torque to the drum and the winding force is applied to the web roll by a second drive assembly (22). In the method the second drive assembly (22) is controlled based on the indicative speed difference of the second drive assembly (22) and setting a friction coefficient for determination of maximum winding force.
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Patent Agency Ranking
公开(公告)号：US20180154366A1
公开(公告)日：2018-06-07
申请号：US15579872
申请日：2016-06-06
Applicant: Valmet Technologies Oy
Inventor： Christer Hedlund , Dino Muhic , Petteri Vuorio , Anders Hawen
Abstract: A blade element (1) for a refiner for refining fibrous material comprises a refining surface (3) provided with blade bars (8, 10) and blade grooves (9, 11) there-between. The blade bars (8, 10) have side walls (8″, 8′″) facing away from one another. The side walls (8″, 8′″) of the at least one blade bar (8) comprise on both of its side walls (8″, 8′″) steps (14″, 14′″) which extend at least partly in the transversal direction relative to the side walls (8″, 8′″) of the blade bar (8) and away from one another.
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公开(公告)号：US20180057753A1
公开(公告)日：2018-03-01
申请号：US15565375
申请日：2016-04-13
Applicant: Valmet Technologies Oy , Fortum Oyj
Inventor： Jukka Heiskanen , Sara Kaerki , Erkki Vaelimaeki , Reyhaneh Sheenassa , Jussi Maentyniemi , Pekka Jokela , Andrea Gutierrez , Juakim 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：US09845952B2
公开(公告)日：2017-12-19
申请号：US14410646
申请日：2013-06-26
Applicant: Valmet Technologies Oy
Inventor： Juha Tolvanen
CPC classification number: F23J15/025 , B03C3/34 , B03C3/70 , B03C3/80 , F23J2217/102
Abstract: An arrangement and method in connection with an electric filter of a boiler plant, the electric filter comprising an insulator chamber. The arrangement comprises a first scavenging duct for conveying warm scavenging gas to the insulator chamber. Said first scavenging duct is connected to a channel conveying process gas in the boiler plant, which means that it is possible to supply process gas to the insulator chamber.
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公开(公告)号：US20170320063A1
公开(公告)日：2017-11-09
申请号：US15523350
申请日：2015-10-23
Applicant: VALMET TECHNOLOGIES OY
Inventor： Håkan Sjöström , Matti Kaarineva , Tomi Iisakkila , Marko Loijas , Marcus Sjölund , Karl Lönngren
Abstract: A blade element (12) for a refiner (10, 11) for refining fibrous material comprises an inner edge (13) and an outer edge (14) and first blade bars (18) and first blade grooves (19) therebetween, the first blade bars and the first blade grooves extending toward the outer edge of the blade element. At top surfaces of the first blade bars there are second blade bars (20) and second blade grooves (21) therebetween. At least some of the second blade bars (20) lying on an outer end portion (12b) of the blade element (12) have a width which is larger than a width of second blade bars (20) lying on an inner end portion (12a) of the blade element (12) and/or is increasing in direction toward the outer edge (14) of the blade element (12).
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110.发明授权公开(公告)号：US09739547B2
公开(公告)日：2017-08-22
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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