Patents by Inventor Marjatta Piironen
Marjatta Piironen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240103503Abstract: The invention provides a control arrangement where the controller is arranged to drive the actuator utilizing automatically the explanation values. The control arrangement has a controller, which is arranged to drive an actuator. The control arrangement comprises also a setpoint controller, which is arranged to utilize deviations between explanation values of machine learning and normal explanation values of machine learning. The setpoint controller forms a setpoint value for the controller.Type: ApplicationFiled: October 13, 2020Publication date: March 28, 2024Inventors: Torsten HAVERINEN-NIELSEN, Marjatta PIIRONEN, Iiris JOENSUU, Vesa-Matti TIKKALA
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Publication number: 20240103507Abstract: The invention provides a diagnostic arrangement, which utilizes pre-processed measurement data, ML values and explanation values. By using all these values/data it is possible to analyse phenomenon, events, and behaviour of the process in such a way that a number of aspects can be taken into account.Type: ApplicationFiled: October 13, 2020Publication date: March 28, 2024Inventors: Torsten HAVERINEN-NIELSEN, Marjatta PIIRONEN, Iiris JOENSUU, Vesa-Matti TIKKALA
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Publication number: 20240103456Abstract: The invention provides a way to monitor a process (1). The invention utilizes explanation values. A ML model of the process is created. The ML model utilizes measurements from the process as inputs to the ML model and forms model outputs. The inputs are classified to groups in the. The explanation values are calculated for each input indicating contribution of the input to the model output/s, and a sum of the explanation values for each group are calculated. The calculated sums are monitored, each sum indicating status of the group in question.Type: ApplicationFiled: October 13, 2020Publication date: March 28, 2024Inventors: Iiris JOENSUU, Marjatta PIIRONEN, Torsten HAVERINEN-NIELSEN, Vesa-Matti TIKKALA
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Publication number: 20240092668Abstract: In a water treatment system, a pretreatment chemical is added to water stream in a pretreatment process including a coagulation, flocculation and separation to reduce amount of dissolved and/or particulate matter in the water stream. Hydrophobic conditions in the water stream are monitored upstream or downstream from adding the pretreatment chemicals. Dosing of the pretreatment chemical to the water stream is controlled based on the monitored hydrophobic conditions. Thereby a membrane fouling in subsequent membrane filtration stage can be minimized.Type: ApplicationFiled: December 4, 2023Publication date: March 21, 2024Applicant: KEMIRA OYJInventors: Mehrdad HESAMPOUR, Roderick ABINET, Marjatta PIIRONEN, Eija KORTE, Iiris JOENSUU
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Patent number: 11866356Abstract: In a water treatment system, a pretreatment chemical is added to water stream in a pretreatment process including a coagulation, flocculation and separation to reduce amount of dissolved and/or particulate matter in the water stream. Hydrophobic conditions in the water stream are monitored upstream or downstream from adding the pretreatment chemicals. Dosing of the pretreatment chemical to the water stream is controlled based on the monitored hydrophobic conditions. Thereby a membrane fouling in subsequent membrane filtration stage can be minimized.Type: GrantFiled: October 6, 2017Date of Patent: January 9, 2024Assignee: KEMIRA OYJInventors: Mehrdad Hesampour, Roderick Abinet, Marjatta Piironen, Eija Korte, Iiris Joensuu
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Patent number: 11859347Abstract: A method is disclosed for predicting the microbial status of a paper or board making process and/or quality of the dry board or paper obtained from the process for controlling microbial status of a paper or board making process or quality of the dry board or paper obtained from the process. Surface level and duration of time in at least one storage tower or pulper are monitored and correlated with respective predetermined values for the tower or pulper in order to predict the risk of microbial activity.Type: GrantFiled: December 7, 2018Date of Patent: January 2, 2024Assignee: Kemira OyjInventors: Marko Kolari, Marjatta Piironen, Iiris Joensuu
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Publication number: 20230287629Abstract: A method for monitoring hydrophobic particles contained in a pulp suspension, includes obtaining a sample from a pulp suspension or a filtrate of the pulp suspension. A fluorescent dye is added to the sample to stain particles in the sample. The sample is fractionated to obtain at least a first fraction and a second fraction, wherein the second fraction is a fiber fraction. The method includes for the obtained fractions, fluorescence emitted by the particles in the fractions, calculating an integral of the fluorescence measured for the fractions excluding the fiber fraction, and correlating the calculated integral of the fluorescence to the amount of acetone soluble material in the pulp suspension, and optionally measuring light scattering signal of the particles in at least first and second fractions.Type: ApplicationFiled: May 18, 2023Publication date: September 14, 2023Applicant: KEMIRA OYJInventors: Marjatta PIIRONEN, Iiris JOENSUU, Lari VÄHÄSALO
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Patent number: 11692312Abstract: A method for monitoring hydrophobic particles contained in a pulp suspension, includes obtaining a sample from a pulp suspension or a filtrate of the pulp suspension. A fluorescent dye is added to the sample to stain particles in the sample. The sample is fractionated to obtain at least a first fraction and a second fraction, wherein the second fraction is a fiber fraction. The method includes for the obtained fractions, fluorescence emitted by the particles in the fractions, calculating an integral of the fluorescence measured for the fractions excluding the fiber fraction, and correlating the calculated integral of the fluorescence to the amount of acetone soluble material in the pulp suspension, and optionally measuring light scattering signal of the particles in at least first and second fractions.Type: GrantFiled: July 2, 2018Date of Patent: July 4, 2023Assignee: KEMIRA OYJInventors: Marjatta Piironen, Iiris Joensuu, Lari Vähäsalo
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Publication number: 20220326685Abstract: Estimating or predicting runnability or end product quality risk level for a pulp or papermaking process is disclosed. The method includes measuring hydrophobicity values of samples originating from a same aqueous process stream. A hydrophobicity measurement signal is produced of measured hydrophobicity values as a function of time. A risk level is calculated for the process. At least one mathematical index is calculated based on the hydrophobicity measurement signal, and optionally based on the amount of particles in the sample, other property of the aqueous stream and/or production data. The mathematical index and optionally the amount of the particles, other property, and/or production data is used as a risk indicator input in the calculation. Based on the risk level calculated for the pulp or papermaking process, the runnability and/or end product quality risk level for the pulp or papermaking process is indicated.Type: ApplicationFiled: June 17, 2020Publication date: October 13, 2022Applicant: KEMIRA OYJInventors: Iiris JOENSUU, Marjatta PIIRONEN
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Publication number: 20220146396Abstract: A sample of an aqueous stream is conducted to an optical measurement device. A hydrophobic dye is added. The sample is fractionated into fractions according to particle size or mass. The fluorescence intensity values and light scattering intensity values for the fractions are measured. The fluorescence intensity values of the fractions are added together thus obtaining a sum of the fluorescence intensity values. The light scattering intensity values of the fractions are added together, thus obtaining a sum of the light scattering intensity values. A hydrophobicity density of the particles in the sample, is calculated by dividing the sum of the fluorescence intensity values with the sum of the light scattering intensity values, and the concentration of hydrophobic contaminants in the aqueous stream is monitored and controlled based on the calculated hydrophobicity density of the particles in the sample.Type: ApplicationFiled: December 20, 2019Publication date: May 12, 2022Applicant: KEMIRA OYJInventors: Iiris JOENSUU, Marjatta PIIRONEN, Andy BERGERON, Travis BJERKETVEDT
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Publication number: 20220009807Abstract: A method is disclosed for monitoring and controlling treatment of a waste water stream. The method includes measuring UV absorbance of a waste water influent and/or waste water effluent, measuring turbidity of the waste water influent and/or waste water effluent, and determining the concentration of dissolved organics in the waste water influent and/or waste water effluent based on the measured UV absorbance. The method includes controlling the dosing of at least one coagulant to the waste water influent based on the measured UV absorbance and/or the determined concentration of the dissolved organics, and optionally based on the measured turbidity, and optionally controlling the dosing of at least one flocculant to the waste water influent based on the measured turbidity.Type: ApplicationFiled: November 14, 2019Publication date: January 13, 2022Applicant: Kemira OyjInventors: Marjatta PIIRONEN, Sakari HALTTUNEN, Iiris JOENSUU, Anne MÄKI
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Patent number: 11046590Abstract: A method and apparatus for monitoring deposit formation in a process having an aqueous flow is provided. According to exemplary embodiments, a feed flow of an aqueous liquid is provided onto a receiving surface to be monitored. At least part of a receiving surface is illuminated with at least one light source. Visual data is collected across the receiving surface and analyzed. The quality and type of deposition attached to the receiving surface is classified based on information obtained from the analyzed visual data, and a quantitative scaling and/or fouling indication is computed based on the classification.Type: GrantFiled: December 22, 2016Date of Patent: June 29, 2021Assignee: KEMIRA OYJInventors: Marjatta Piironen, Iiris Joensuu, Mehrdad Hesampour, Jaakko Ekman
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Publication number: 20210156092Abstract: A method for monitoring hydrophobic particles contained in a pulp suspension, includes obtaining a sample from a pulp suspension or a filtrate of the pulp suspension. A fluorescent dye is added to the sample to stain particles in the sample. The sample is fractionated to obtain at least a first fraction and a second fraction, wherein the second fraction is a fiber fraction. The method includes for the obtained fractions, fluorescence emitted by the particles in the fractions, calculating an integral of the fluorescence measured for the fractions excluding the fiber fraction, and correlating the calculated integral of the fluorescence to the amount of acetone soluble material in the pulp suspension, and optionally measuring light scattering signal of the particles in at least first and second fractions.Type: ApplicationFiled: July 2, 2018Publication date: May 27, 2021Applicant: KEMIRA OYJInventors: Marjatta PIIRONEN, liris JOENSUU, Lari VÄHÄSALO
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Patent number: 10988392Abstract: Methods and systems are disclosed for optimization of coagulation and/or flocculation in a water treatment process. According to exemplary embodiments, samples are taken from an aqueous liquid and the samples are monitored with an imaging device to capture visual data of particles dispersed or suspended in the liquid. The particles are classified into particle types based on the visual data and a particle size distribution indication is computed for each classified particle type. The particle size distribution indication is then compared to a predetermined particle size distribution value, and in response to a difference detected, dosage of at least one coagulation and/or flocculation agent in the water treatment process can be adjusted.Type: GrantFiled: March 31, 2017Date of Patent: April 27, 2021Assignee: KEMIRA OYJInventors: Marjatta Piironen, Iiris Joensuu, Mehrdad Hesampour
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Publication number: 20200299903Abstract: A method is disclosed for predicting the microbial status of a paper or board making process and/or quality of the dry board or paper obtained from the process for controlling microbial status of a paper or board making process or quality of the dry board or paper obtained from the process. Surface level and duration of time in at least one storage tower or pulper are monitored and correlated with respective predetermined values for the tower or pulper in order to predict the risk of microbial activity.Type: ApplicationFiled: December 7, 2018Publication date: September 24, 2020Applicant: Kemira OyjInventors: Marko Kolari, Marjatta PIIRONEN, Iiris JOENSUU
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Publication number: 20200278293Abstract: In a starch concentration measurement, a liquid sample is conducted from a liquid sample such as pulp suspension or filtrate of a paper, board or tissue process. An iodine solution is added to the sample, and a light absorbance or transmittance of the sample is measured at a wavelength longer than about 650 nm, for example longer than about 700 nm. The measured absorbance or transmittance of the sample is converted into the starch concentration of the sample by a predefined correlation between a starch concentration and a light absorbance or transmittance.Type: ApplicationFiled: March 24, 2017Publication date: September 3, 2020Applicant: KEMIRA OYJInventors: Lari VÄHÄSALO, Marjatta PIIRONEN, Iiris JOENSUU
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A METHOD AND SYSTEM FOR OPTIMIZATION OF COAGULATION AND/OR FLOCCULATION IN A WATER TREATMENT PROCESS
Publication number: 20200223719Abstract: Methods and systems are disclosed for optimization of coagulation and/or flocculation in a water treatment process. According to exemplary embodiments, samples are taken from an aqueous liquid and the samples are monitored with an imaging device to capture visual data of particles dispersed or suspended in the liquid. The particles are classified into particle types based on the visual data and a particle size distribution indication is computed for each classified particle type. The particle size distribution indication is then compared to a predetermined particle size distribution value, and in response to a difference detected, dosage of at least one coagulation and/or flocculation agent in the water treatment process can be adjusted.Type: ApplicationFiled: March 31, 2017Publication date: July 16, 2020Applicant: KEMIRA OYJInventors: Marjatta Piironen, Iiris Joensuu, Mehrdad Hesampour -
Publication number: 20200048126Abstract: In a water treatment system, a pretreatment chemical is added to water stream in a pretreatment process including a coagulation, flocculation and separation to reduce amount of dissolved and/or particulate matter in the water stream. Hydrophobic conditions in the water stream are monitored upstream or downstream from adding the pretreatment chemicals. Dosing of the pretreatment chemical to the water stream is controlled based on the monitored hydrophobic conditions. Thereby a membrane fouling in subsequent membrane filtration stage can be minimized.Type: ApplicationFiled: October 6, 2017Publication date: February 13, 2020Applicant: KEMIRA OYJInventors: Mehrdad HESAMPOUR, Roderick ABINET, Marjatta PIIRONEN, Eija KORTE, liris JOENSUU
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Publication number: 20190002304Abstract: A method and apparatus for monitoring deposit formation in a process having an aqueous flow is provided. According to exemplary embodiments, a feed flow of an aqueous liquid is provided onto a receiving surface to be monitored. At least part of a receiving surface is illuminated with at least one light source. Visual data is collected across the receiving surface and analyzed. The quality and type of deposition attached to the receiving surface is classified based on information obtained from the analyzed visual data, and a quantitative scaling and/or fouling indication is computed based on the classification.Type: ApplicationFiled: December 21, 2016Publication date: January 3, 2019Applicant: KEMIRA OYJInventors: Marjatta PIIRONEN, Iiris JOENSUU, Mehrdad HESAMPOUR, Jaakko EKMAN
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Patent number: 10139330Abstract: The invention concerns a method and system for analyzing a liquid sample containing solid matter. The method comprises fractionating the sample according to particle sizes and/or masses of the solid matter so as to produce sample fractions, and measuring at least one physical or chemical property of at least one of said sample fractions. According to the invention the sample is conducted to a disintegration channel having one or more depressions, and a liquid flow having a non-constant temporal velocity profile is applied through the disintegration channel, in order to gradually take solid matter of the sample with the liquid flow from said one or more depressions for providing said sample fractions. The invention allows for efficient fractionation of samples, which cannot be fractionated using conventional field flow fractionation, for example.Type: GrantFiled: May 24, 2013Date of Patent: November 27, 2018Assignee: KEMIRA OYJInventors: Lari Vähäsalo, Eija Saari, Iiris Joensuu, Marjatta Piironen