-
公开(公告)号：US12104319B2
公开(公告)日：2024-10-01
申请号：US17888917
申请日：2022-08-16
申请人： VALMET AUTOMATION OY
CPC分类号： D21C11/12 , D21C11/0007 , D21C11/122 , D21C11/14 , F23G5/50 , F23G7/04 , G01B11/24 , G01J5/0044 , G01N25/04 , G01J2005/0077
摘要： A method for controlling a chemical recovery boiler. The method includes measuring concentrations of sodium carbonate, sodium sulfide, and sodium sulfate from green liquor of the chemical recovery boiler, determining a target temperature for smelt, imaging at least an area of a char bed of the chemical recovery boiler, the area being close to a smelt spout, to obtain an image of the area, determining a measured temperature of the char bed using the image of the area. The method further includes determining that the measured temperature of the char bed is less than the target temperature for smelt, and controlling the chemical recovery boiler such that the temperature of the char bed increases. A chemical recovery boiler for the same.
-
公开(公告)号：US11828736B2
公开(公告)日：2023-11-28
申请号：US17052537
申请日：2019-04-24
申请人： Valmet Automation Oy
CPC分类号： G01N3/20 , B65H23/044 , D21F1/48 , D21G9/0027 , G01B11/06 , G01N33/346 , B65H2511/23 , B65H2515/37 , B65H2553/10 , B65H2553/45 , G01N2203/0046 , G01N2203/0075 , G01N2203/0282
摘要： According to an example aspect of the present invention, there is provided a method, comprising: controlling suction with predetermined force in a known measurement area to a moving cardboard or paper web in a manufacturing process, detecting on-line measurement information on deviation of the moving cardboard or paper web in the manufacturing process caused by the suction with predetermined force in the known measurement area, and determining elastic modulus of the moving cardboard or paper web in the manufacturing process on the basis of the measured deviation.
-
公开(公告)号：US20210279390A1
公开(公告)日：2021-09-09
申请号：US17183962
申请日：2021-02-24
申请人： Valmet Automation Oy
发明人： Jarmo MANSIKKASALO
摘要： A method for obtaining information on quality of combustion of a liquor in a chemical recovery boiler. The method comprises entering a value of a first input parameter to a computational model configured to determine, based on the value of the first input parameter, a value of the quality of combustion of the liquor in the chemical recovery boiler, and at a first time, running the computational model to obtain a first modelling result. The method comprises measuring, from the chemical recovery boiler a value indicative of carryover to obtain a measurement result; comparing the first modelling result with [a] the measurement result or [b] a result derived from the measurement result, to obtain a primary comparison result; and adjusting the value of the first input parameter based on the primary comparison result to obtain an adjusted value of the first input parameter. The method comprises entering the adjusted value of the first input parameter to the computational model, and at a second time, running the computational model to obtain the information on quality of combustion of the liquor in the chemical recovery boiler.
-
公开(公告)号：US20210088500A1
公开(公告)日：2021-03-25
申请号：US17004697
申请日：2020-08-27
申请人： VALMET AUTOMATION OY
发明人： Markku MÄNTYLÄ , Pekka SUOPAJÄRVI
IPC分类号： G01N33/34 , G01N21/3559 , G01N21/86
摘要： A measurement apparatus of a moving paper web, includes an optical radiation source that outputs optical radiation toward a scattering element of the measurement apparatus. The scattering element scatters the optical radiation, and a transmitting surface of the scattering element directs the optical radiation in a scattered manner toward the moving paper web. A distance between said transmitting surface of the scattering element and a surface of the paper web is known, and the transmitting surface and a detector of the apparatus are on opposite sides of the paper web. The detector receives at least a part of the optical radiation, which is side-scattered from the moving paper web. The detector determines a moisture value and a dry weight of the paper web on the basis of spectral information on the received optical radiation and the known distance.
-
公开(公告)号：US10788819B2
公开(公告)日：2020-09-29
申请号：US16162877
申请日：2018-10-17
申请人： Valmet Automation Oy
IPC分类号： G05B23/02 , G05B19/042
摘要： An industrial process is monitored and controlled by displaying at least one process page in a process page window, providing an operator configurable region, and providing at least one item display element representing at least one process component, sub-process or operation on the process page and being movable on top of the operator configurable region. A movement of the item display element from the process page on to the operator configurable region is determined, and the operator configurable region is caused to display a corresponding docked display element in the operator configurable region. The docked display element is configured to enable control of the process component, sub-process or operation the docked display element represents from the operator configurable region.
-
公开(公告)号：US10585836B2
公开(公告)日：2020-03-10
申请号：US15953866
申请日：2018-04-16
申请人： Valmet Automation Oy
发明人： Vesa Saastamoinen
摘要： The invention relates to an apparatus, a device and a method. The apparatus is configured for providing an address to a device attachable with the apparatus. The apparatus comprises at least one connector capable of receiving the device, an address composer for producing an address signal, and an address line in the connector for providing the address signal to the device, the address signal being indicative of an address to be used by the device when attached with the apparatus. The address composer is configured to generate the address signal as an analogue address signal. The device comprises at least one connector capable of receiving the device, an address composer for producing an address signal, an address line in the connector for providing the address signal to the device, the address signal being indicative of an address to be used by the device when attached with the apparatus, an input for receiving the address signal as an analogue address signal, a comparator for comparing the level of the analogue address signal with a set of reference values; and a determinator to determine the address to be used by the device on the basis of the comparison result.
-
公开(公告)号：US10385513B2
公开(公告)日：2019-08-20
申请号：US15707676
申请日：2017-09-18
申请人： VALMET AUTOMATION OY
摘要： A method for optimizing reduction and content of total titratable alkali of green liquor of a recovery boiler. The method comprises producing green liquor in a dissolving tank by conveying smelt and weak white liquor into the dissolving tank and measuring at least the contents of sodium sulphate, sodium hydroxide, sodium sulphide, and sodium carbonate of the green liquor. The method comprises controlling at least a process parameter of a recovery boiler to maximize the reduction of the recovery boiler and controlling the flow of the weak white liquor into the dissolving tank to optimize the content of total titratable alkali of the green liquor. In addition, a system for producing green liquor with optimized reduction and content of total titratable alkali. The system comprises a first sensor arrangement, a first and a second regulator, and a processing unit arrangement configured to perform the method.
-
公开(公告)号：US10317340B2
公开(公告)日：2019-06-11
申请号：US15836277
申请日：2017-12-08
申请人： VALMET AUTOMATION OY
发明人： Pasi Kärki
摘要： An apparatus for optically measuring fluidal matter having fluid as medium and particles non-dissolved in the medium wherein the apparatus comprises a measurement chamber, which is configured to contain the fluidal matter, and a nozzle. The nozzle receives flowable matter and emits a jet of the flowable matter towards or fromwards an optical detector which is associated with the measurement chamber and receives optical radiation from the fluidal matter in the measurement chamber.
-
公开(公告)号：US20180164212A1
公开(公告)日：2018-06-14
申请号：US15812475
申请日：2017-11-14
申请人： VALMET AUTOMATION OY
发明人： Pasi KÄRKI , Matti TÖRMÄNEN
CPC分类号： G01N21/532 , G01N21/33 , G01N21/474 , G01N21/53 , G01N21/85 , G01N33/343 , G01N2021/475 , G01N2021/4769 , G01N2021/8592 , G01N2201/0826
摘要： A solution for measuring a suspension which contains wood fibres. The consistency of the suspension is changed in a consistency range. Optical radiation is directed at the suspension and the intensity of optical radiation interacted with the suspension is measured at different consistencies in the consistency range. The maximum intensity of the optical radiation is determined within the consistency range. At least one of the following properties of the suspension are determined based on the determined maximum intensity: kappa number, brightness.
-
公开(公告)号：US20170292911A1
公开(公告)日：2017-10-12
申请号：US15518160
申请日：2015-10-23
申请人： VALMET AUTOMATION OY
发明人： Pasi KÄRKI , Tuomo TOMPERI
CPC分类号： G01N21/534 , C02F1/00 , C02F3/00 , G01N1/00 , G01N1/14 , G01N1/2035 , G01N21/53 , G01N21/59 , G01N33/18 , G01N2001/1025 , G01N2001/1037 , G01N2001/1427
摘要： An apparatus includes a piston cavity, a piston insertable in the piston cavity, and at least one flow cavity. Each flow cavity is inserted in the piston, alongside the piston cavity such that the flow cavity has a connection with the piston cavity, or between the piston and a wall of the piston cavity by means of one or more differences in cross section between the piston and the piston cavity, and the flow cavity is in contact with a liquid substance being processed. The piston moves back and forth inside the piston cavity and causes with its movement a flow of the liquid substance in each flow cavity in connection with measuring the liquid substance.
-
-
-
-
-
-
-
-
-
搜索结果
61 条记录 (耗时 0.03 秒)
