FI124022B - Dust collection and analysis equipment and method for determining the size and mass of particles released from a fiber material - Google Patents
Dust collection and analysis equipment and method for determining the size and mass of particles released from a fiber material Download PDFInfo
- Publication number
- FI124022B FI124022B FI20096267A FI20096267A FI124022B FI 124022 B FI124022 B FI 124022B FI 20096267 A FI20096267 A FI 20096267A FI 20096267 A FI20096267 A FI 20096267A FI 124022 B FI124022 B FI 124022B
- Authority
- FI
- Finland
- Prior art keywords
- particles
- coarse
- μηι
- size
- dust
- Prior art date
Links
- 239000002245 particle Substances 0.000 title claims description 30
- 239000000428 dust Substances 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 16
- 238000004458 analytical method Methods 0.000 title description 12
- 239000002657 fibrous material Substances 0.000 title 1
- 239000000463 material Substances 0.000 claims description 29
- 239000011159 matrix material Substances 0.000 claims description 7
- 238000013270 controlled release Methods 0.000 claims 2
- 238000000638 solvent extraction Methods 0.000 claims 2
- 238000003384 imaging method Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 description 19
- 238000005259 measurement Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007619 statistical method Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0255—Investigating particle size or size distribution with mechanical, e.g. inertial, classification, and investigation of sorted collections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2208—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with impactors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0211—Investigating a scatter or diffraction pattern
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N2001/028—Sampling from a surface, swabbing, vaporising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0096—Investigating consistence of powders, dustability, dustiness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0255—Investigating particle size or size distribution with mechanical, e.g. inertial, classification, and investigation of sorted collections
- G01N2015/0261—Investigating particle size or size distribution with mechanical, e.g. inertial, classification, and investigation of sorted collections using impactors
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
- Paper (AREA)
Description
Pölynkeräys- ja analysointilaitteisto sekä menetelmä kuitumateriaalista irtoavien hiukkasten koon ja massan määrittämiseksiDust collection and analysis apparatus and method for determining particle size and mass of fibrous matter
Esillä olevan keksinnön kohteena on pölynkeräys- ja analysointilaitteisto pa-5 peri- tai kartonkirainoista tai -arkeista irtoavien hiukkasten koon ja massan määrittämiseksi. Keksinnön kohteena on lisäksi menetelmä paperi- tai kartonkirainoista tai -arkeista irtoavien hiukkasten koon ja massan määrittämiseksi.The present invention relates to a dust collection and analysis apparatus for determining the size and mass of particles that are released from paper or board webs or sheets. The invention further relates to a method for determining the size and mass of particles exiting a paper or board web or sheet.
10 Paperi- ja painoteollisuudessa esiintyy pölyongelmia, jotka pahenevat, koska uusiomassaa/-paperia käytetään yhä enemmän. Nykyisin pölyävyyden analysointi tehdään usein silmämääräisesti, käyttäen esim. erilaisia kalibrointinau-hoja, joihin tarttuu näytteen pinnalta pölyä, joka analysoidaan sitten mikroskoopissa tai yksinkertaisimmillaan verrataan silmämääräisesti vertailunäyt- 15 teeseen. Tämä on työläs ja epätarkka prosessi. Nykyisillä mittalaitteilla pöly-analyysin tekeminen on työläs ja monivaiheinen prosessi ja yksittäisen tuloksen saaminen kestää kauan, eikä sitä voida käyttää esim. koneiden säätöön, koska analyysi tehdään erillisistä näytteistä laboratoriossa.10 There are dust problems in the paper and printing industry, which are getting worse as recycled pulp / paper is used more and more. Nowadays, the analysis of dustiness is often done visually, using, for example, various calibration strips which adhere to the surface of the sample, which is then microscopically analyzed or visually compared to a control sample. This is a laborious and inaccurate process. With current instruments, performing a dust analysis is a laborious and multi-step process and it takes a long time to get a single result, and it cannot be used, for example, to adjust machines because the analysis is done on separate samples in the laboratory.
20 Toinen ongelma liittyy pölyn/hiukkasten analysointiin. Nykyisellä mittaustekniikalla ilmavirran mukana ohjattujen pienten hiukkasten mittaustekniikka on jatkuvatoimisesti luotettavaa tyypillisesti 20 mikrometriin saakka. Käytetty ^ tekniikka perustuu laservalon diffraktioon hiukkasista. On myös saatavilla ^ mittaustekniikkaa alueelle 20 - 200 mikrometriin, mutta laitteet ovat kalliita, 0 25 ja usein menetetään tilavuuden mittaus, jolloin ei saada selville pölyn mas- S saa/ilman tilavuus. Paperi- ja painoteollisuudessa nimenomaan pölyn massa 1 on keskeinen suure. Lisäksi paperista irtoaa selluloosakuituja, joiden pituus £ voi olla esim. 1-3 millimetriä, ja paksuus keskimäärin 20 mikrometriä. NäitäAnother problem relates to dust / particle analysis. With current measurement technology, the measurement technique for small particles controlled by airflow is continuously reliable, typically up to 20 micrometers. The technique used is based on the diffraction of laser light from the particles. Techniques for measuring from 20 to 200 micrometers are also available, but the devices are expensive, from 0 to 25, and often a volumetric measurement is lost, thus failing to determine the mass of dust / air. In the paper and printing industry, it is the dust mass 1 that is central. In addition, cellulosic fibers having a length ≤ 1 to 3 millimeters and an average thickness of 20 micrometres are released from the paper. these
C\JC \ J
^ kuituja ei pystytä mittaamaan laservalon diffraktioon perustuen luotettavasti, o ^ 30 ja käytännössä tälle alueelle ei ole saatavilla käyttökelpoista eikä varsinkaan reaaliaikaisesti toimivaa mittaustekniikkaa.^ the fibers cannot be reliably measured based on the diffraction of the laser light, o ^ 30 and practically no real-time measurement technology is available in this area.
22
Niinpä esillä olevan keksinnön päämääränä on aikaansaada ratkaisu, jolla paperista tai kartongista irtoava pöly saadaan analysoitua luotettavasti ja nopeasti ja joka ratkaisu soveltuu sekä jatkuvatoimiseen analysointiin tuotan-5 tolinjalla että erillisten näytteiden analysointiin, esim. laboratorioissa.Accordingly, it is an object of the present invention to provide a solution that enables reliable and rapid analysis of dust released from paper or cardboard, and which is suitable for both continuous analysis on a production line and for analysis of discrete samples, e.g. in laboratories.
Tämän päämäärän saavuttamiseksi keksinnön mukaiselle pölynkeräys- ja analysointilaitteistolle on tunnusomaista se, että laitteistoon kuuluu välineet pölyn hallituksi irrottamiseksi tutkittavan materiaalin pinnalta ja välineet ir-10 ronneen aineksen johtamiseksi virtuaali-impaktoriin, jossa irronnut pöly jaetaan hienojakoiseksi ja karkeaksi ainekseksi, jotka johdetaan hienojakoisen aineksen mittauslaitteistoon ja vastaavasti karkeajakoisen aineksen mittauslaitteistoon ja mittauslaitteista saadut tulokset yhdistetään analysointilaitteessa ja että karkeajakoisen aineksen mittauslaitteistona käytetään kame-15 raa, joka on esimerkiksi nopea viiva- tai matriisikamera ja joka kuvaa ilmavirran mukana liikkuvat hiukkaset. Keksinnön mukaiselle menetelmälle on puolestaan tunnusomaista se, että menetelmässä pöly irrotetaan hallitusti tutkittavan materiaalin pinnalta ja johdetaan alipaineen avulla virtuaali-impaktoriin, jossa irronnut pöly jaetaan hienojakoiseksi ja karkeaksi ainek-20 seksi, jotka johdetaan hienojakoisen aineksen mittauslaitteistoon ja vastaavasti karkeajakoisen aineksen mittauslaitteistoon, jossa karkeajakoisen aineksen mittauslaitteistona käytetään kameraa, joka on esimerkiksi nopea ^ viiva- tai matriisikamera ja joka kuvaa ilmavirran mukana liikkuvat hiukkaset, ^ ja mittauslaitteista saadut tulokset yhdistetään analysointilaitteessa.To achieve this object, the dust collection and analysis apparatus of the invention is characterized in that the apparatus comprises means for controlled removal of dust from the surface of the material being examined and means for introducing the disintegrated material into a virtual respectively, the coarse matter measuring apparatus and the results obtained from the measuring apparatus are combined in the analyzer and the coarse matter measuring apparatus used is a camera-15, which is, for example, a fast line or matrix camera and describes particles moving with the air stream. The process according to the invention, in turn, is characterized by the controlled removal of dust from the surface of the material to be examined and the application of a vacuum to a virtual impactor, wherein the released dust is divided into fine and coarse material the measuring apparatus used is a camera, for example a fast ^ line or matrix camera, which captures particles moving with the air stream, ^ and the results obtained from the measuring instruments are combined in an analyzer.
§ 25 δ Keksinnönmukaisella laitteistolla kerätään irtoavaa pölyä, ja pölystä tehdään | nopeasti tilastollinen analyysi halutulla kokoalueella, joka voi olla alle 1 mik- rometristä - useisiin millimetreihin, ja saatu data tallennetaan muistiin. Ny- C\] ^ kyisillä diffraktioon perustuvilla laitteistolla voidaan mitata tyypillisesti n. 20 o ^ 30 mikrometriin asti. Mikäli halutaan mitata suurempia hiukkaskokoja, laitteisto jen hinta kasvaa ja yläraja diffraktioperiaatteella on tyypillisesti 200 mikro- 3 metrissä. Keksinnönmukaisella laitteistolla saadaan mitattua sekä kantoai-neena käytetyn ilman määrä että sen mukana kulkevien hiukkasten lukumäärä ja koot. Laitteisto voidaan asentaa esim. paperikoneen mittausraamiin tai painokoneeseen seuraamaan valmistetun tai vastaavasti käytetyn paperilaa-5 dun pölyämisominaisuuksia. Laitteisto tuottaa tilastollisten analyysin nopeasti. Esim. laboratoriokäytössä analyysin tekeminen kestää näytteenottoajan huomioiden arviolta pari minuuttia. Analyysin nopeus riippuu siitä, mikä on hiukkasten pitoisuus ilmavirrassa. Jatkuvatoimisesti esim. paperikoneessa toimiva laite voi tehdä tilastollisia analyysejä esim. muutaman sekunnin vä-10 lein riippuen hiukkasten pitoisuudesta ilmavirrassa. Myös laimennus voi olla tarpeen, jos hiukkasten pitoisuus on suuri.§ 25 δ Extracting dust is collected by the apparatus according to the invention and the dust is made | rapid statistical analysis over a desired size range, which may be less than 1 micrometer - to several millimeters, and the resulting data is stored in memory. Typically, diffraction-based instruments can measure up to about 20 µm to about 30 micrometers. If larger particle sizes are to be measured, the cost of the equipment increases and the upper limit of the diffraction principle is typically 200 micrometers. The apparatus of the invention can measure both the amount of air used as a carrier and the number and size of particles carried with it. The apparatus can be mounted, for example, on a measuring machine for a paper machine or on a printing press to monitor the dusting properties of a paper tray manufactured or used respectively. The hardware provides rapid statistical analysis. For example, in laboratory use, it takes approximately a couple of minutes, taking into account the sampling time. The rate of analysis depends on the concentration of the particles in the air stream. A device operating continuously, e.g., in a paper machine, can perform statistical analyzes, e.g., at intervals of a few seconds, depending on the concentration of the particles in the air stream. Dilution may also be necessary if the particulate content is high.
Esim. paperikoneen säädössä laitteisto toimii siten, että jos havaitaan valmistetun paperin pölyävän, muutetaan raaka-aineiden ja sideaineiden laatua 15 siten, että pölyäminen vähenee.For example, in the control of a paper machine, the apparatus operates in such a way that if the produced paper is found to be dusty, the quality of the raw materials and binders is altered to reduce dusting.
Keksinnönmukaisella ratkaisulla saavutetaan etuina mm. seuraavaa: - Painokoneet: painotuotteiden laatu paranee, voidaan testata ajon aikana paperin pölyävyyttä ja vaatia tarvittaessa laadukkaampia painopapereita. II-20 massa leijuva pölyn/koneisiin kertyvän pölyn määrää voidaan vähentää, tuli-paloriski pienenee (staattisen sähkön ongelmat), koneiden puhdistustanne vähenee ja seisokit vähenevät. Lisäksi painotaloille tieto paperin pölyävyydes-tä on neuvotteluetu hankittaessa painopapereita.Advantages of the solution according to the invention are e.g. the following: - Printing machines: Improves the quality of printed products, allows you to test the dustiness of paper while driving and, if necessary, require higher quality printing papers. II-20 pulverized dust / dust accumulated in the machine can be reduced, the risk of fire and fire (static electricity problems) is reduced, your machine cleaning is reduced and downtime is reduced. In addition, for printers, information on the dustiness of paper is a negotiating advantage when purchasing printing papers.
C\JC \ J
0 - Paperikoneet: pystyvät kehittämään laadukkaita painopapereita, joista ir-0 - Paper machines: able to develop high quality printing papers
(M(M
ώ 25 toavan pölyn määrä vähenee. Seisokit vähenevät, ja koneiden puhdis- £ tus/pesukerrat vähenevät.ώ The next 25 dusts are reduced. Downtime is reduced and machine cleaning / washing is reduced.
CCCC
CLCL
^ Seuraavassa keksintöä kuvataan lähemmin oheiseen piirustukseen viitaten,The invention will now be described in more detail with reference to the accompanying drawing,
CDCD
jonka ainoa kuvio esittää kaaviollisena periaatekuvana esillä olevan keksinee o 30 nön erään esimerkkisuoritusmuodon.the sole figure of which shows an exemplary embodiment of the present invention as a schematic diagram.
CMCM
44
Kuviossa 1 esitettyyn laitteistoon kuuluu välineet 1 pölyn hallituksi irrottamiseksi tutkittavan materiaalin 11 pinnalta. Materiaali 11 voi olla esim. paperi-tai kartonkiraina tai erillinen näytearkki tutkittavasta paperista/kartongista. Irronnut aines 12 johdetaan kartio-osan 14 ja putken 8 kautta sinänsä tun-5 nettuun virtuaali-impaktoriin 15, jota ei kuvata tässä yhteydessä lähemmin. Virtuaali-impaktorissa 15 irronnut pöly jaetaan hienojakoiseksi ja karkeaksi ainekseksi, jotka johdetaan putkea 10 pitkin hienojakoisen aineksen mittauslaitteistoon 2 ja vastaavasti putkea 9 pitkin karkeajakoisen aineksen mittauslaitteistoon 3. Mittauslaitteista saadut tulokset yhdistetään analysointilaittees-10 sa 5. Karkeajakoisen aineksen mittauslaitteistoon 3 kuuluu putkiosaan 9 muodostettu kavennettu osa 9', johon suunnataan valonsäteet 4 läpinäkyvän pohjalevyn 13 läpi alhaaltapäin kohti yläpuolella sijaitsevaa kameraa 16, joka voi olla esim. viivakamera (line scan camera) tai nopea matriisikamera. Vii-vakamera skannaa poikittain ilman virtaussuuntaan nähden suurella taajuu-15 della (esim. 2048 pikseliä taajuudella 40 kHz) havaiten ilmavirran mukana kulkevat hiukkaset. Matriisikamera ottaa kuvan (esim. 2048x2048 pikseliä) esim. 10ps välein kuvaten ilmavirran mukana liikkuvat hiukkaset. Viivakame-ran skannausnopeus tai matriisikameran kuvausnopeus synkronoidaan sopivaksi virtausnopeuden kanssa. Synkronoinnin helpottamiseksi voidaan käyt-20 tää tarvittaessa kahta kameraa. Lopputuloksena viivakamera muodostaa pitkän kuvan ja matriisikamera tuottaa useita peräkkäisiä kuvia, joista määritetään kuvankäsittelyn menetelmin hiukkasten kokoluokat ja sinänsä tunnettuja menetelmiä käyttäen myös massa käytettyä ilmatilavuutta kohti.The apparatus shown in Fig. 1 includes means 1 for controlled removal of dust from the surface of the material 11 to be examined. The material 11 may be, for example, a paper or board web or a separate sample sheet of the paper / board being tested. The released material 12 is conveyed through the conical portion 14 and the tube 8 to a virtual impactor 15 known per se, which is not described further herein. In the virtual impactor 15, the released dust is subdivided into fine and coarse material, which is conducted along a tube 10 to a finely divided material measuring apparatus 2 and, respectively, a tube 9 to a coarse material measuring apparatus 3. The results of the measuring instruments are combined a portion 9 'for directing light rays 4 through a transparent bottom plate 13, from below, toward an overhead camera 16, which may be, for example, a line scan camera or a fast matrix camera. The Vii camera scans transversely to the direction of airflow at a high frequency (e.g., 2048 pixels at 40 kHz), detecting particles entrained in the air stream. The matrix camera captures an image (e.g., 2048x2048 pixels) at intervals of, e.g., 10ps, capturing particles moving with the airflow. The line camera scan speed or matrix camera frame rate is synchronized to match the flow rate. If necessary, two cameras can be used to facilitate synchronization. As a result, the line camera produces a long image and the matrix camera produces a number of sequential images which are determined by image processing methods to determine the particle size and, in a manner known per se, to mass per volume of air used.
C\JC \ J
δδ
CMCM
£ 25 Pöly johdetaan mittauslaitteiston 3 jälkeen pölynkeruusäiliöön 6 pumpun 7 o ,1 avulla. Pumppu 7 tuottaa tarvittavan alipaineen pölyn irrotusosaan 1.£ 25 Dust is fed into the dust collection tank 6 after the measuring apparatus 3 by means of pump 7 o, 1. The pump 7 provides the necessary vacuum to the dust removal section 1.
oo
XX
cccc
CLCL
1^1?
CDCD
CMCM
CDCD
0505
OO
OO
CMCM
Claims (9)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20096267A FI124022B (en) | 2009-11-30 | 2009-11-30 | Dust collection and analysis equipment and method for determining the size and mass of particles released from a fiber material |
| PCT/FI2010/050976 WO2011064459A1 (en) | 2009-11-30 | 2010-11-29 | Dust collecting and analysing apparatus and method for determining the size and mass of particles detaching from fibrous material |
| EP10832706.5A EP2507614A4 (en) | 2009-11-30 | 2010-11-29 | Dust collecting and analysing apparatus and method for determining the size and mass of particles detaching from fibrous material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20096267A FI124022B (en) | 2009-11-30 | 2009-11-30 | Dust collection and analysis equipment and method for determining the size and mass of particles released from a fiber material |
| FI20096267 | 2009-11-30 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI20096267A0 FI20096267A0 (en) | 2009-11-30 |
| FI20096267A FI20096267A (en) | 2011-05-31 |
| FI124022B true FI124022B (en) | 2014-02-14 |
Family
ID=41395312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI20096267A FI124022B (en) | 2009-11-30 | 2009-11-30 | Dust collection and analysis equipment and method for determining the size and mass of particles released from a fiber material |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2507614A4 (en) |
| FI (1) | FI124022B (en) |
| WO (1) | WO2011064459A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749073B (en) * | 2015-04-02 | 2017-10-10 | 东南大学 | A kind of test device and method of particle mechanical strength |
| CN106323825B (en) * | 2016-10-26 | 2020-09-15 | 浙江大学 | Device and method for measuring particle size of pipeline pulverized coal |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3737129A1 (en) * | 1987-11-02 | 1989-05-11 | Fraunhofer Ges Forschung | Apparatus having limited time and particle size resolution for determining the concentration of dust, in particular wood dust, in the air breathed in places of work |
| DE4433092C1 (en) * | 1994-09-16 | 1995-12-07 | Fraunhofer Ges Forschung | Determining concentration of differently sized particle-dust aggregates in aerosol |
| FR2749658B1 (en) * | 1996-06-10 | 1998-07-31 | Centre Tech Ind Papier | METHOD FOR REGULATING A PAPER PULK DEINKING CHAIN AND DEVICE FOR CONTINUOUSLY MEASURING THE QUANTITY OF PARTICLES CONTAINED IN A LIQUID |
| FI111102B (en) * | 1997-09-22 | 2003-05-30 | Metso Automation Oy | Method for measuring particles in suspension and measuring device |
| US6938777B2 (en) * | 2001-09-17 | 2005-09-06 | Mesosystems Technology, Inc. | Method for removing surface deposits of concentrated collected particles |
| AT410980B (en) * | 2001-06-05 | 2003-09-25 | Paper Testing Instr Gmbh | PARTICLE PROBE, MEASURING SYSTEM AND METHOD FOR DETERMINING THE DUST LOAD OF A RAIL-SHAPED OBJECT |
| US20070092976A1 (en) * | 2005-10-06 | 2007-04-26 | Board Of Regents Of The University And College Systems Of Nevada | Continuous emissions monitoring |
| JP4795280B2 (en) * | 2007-03-09 | 2011-10-19 | 新日本製鐵株式会社 | Continuous falling dust measuring device and continuous falling dust measuring method |
| JP4795295B2 (en) * | 2007-03-30 | 2011-10-19 | 新日本製鐵株式会社 | Continuous falling dust measuring device |
| FI20085448L (en) * | 2008-05-14 | 2009-11-15 | Metso Automation Oy | Method and apparatus for determining the dusting tendency of a web-like material |
-
2009
- 2009-11-30 FI FI20096267A patent/FI124022B/en not_active IP Right Cessation
-
2010
- 2010-11-29 EP EP10832706.5A patent/EP2507614A4/en not_active Withdrawn
- 2010-11-29 WO PCT/FI2010/050976 patent/WO2011064459A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| EP2507614A4 (en) | 2017-08-16 |
| FI20096267A0 (en) | 2009-11-30 |
| WO2011064459A1 (en) | 2011-06-03 |
| FI20096267A (en) | 2011-05-31 |
| EP2507614A1 (en) | 2012-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103874919B (en) | The method and apparatus of web features during for creping is monitored and controlled | |
| CA1258898A (en) | Contaminant detection in paper pulp | |
| AU2008331858B2 (en) | Method and apparatus for measuring deposition of particulate contaminants in pulp and paper slurries | |
| US10844544B2 (en) | Method of measuring hydrophobic contaminants in a pulp slurry or a papermaking system | |
| CN101203885A (en) | Method and apparatus for measuring fiber orientation of a moving fabric | |
| WO2017210975A1 (en) | Method for monitoring distribution condition of sticky materials in pulping and papermaking system | |
| FI124022B (en) | Dust collection and analysis equipment and method for determining the size and mass of particles released from a fiber material | |
| WO2017210974A1 (en) | Device and method for capturing sticky materials in pulping and papermaking system | |
| CA2369802C (en) | Particle quantifying apparatus and method | |
| JP4984060B2 (en) | Paper quality control method and method for producing slip sheet for storage and / or transport slip of glass substrate for flat panel display | |
| US6744500B2 (en) | Identification of material inclusions in pulp and paper using Raman spectroscopy | |
| WO2017210973A1 (en) | System and method for obtaining image of granular sticky materials in papermaking pulp | |
| US20130220003A1 (en) | Method and apparatus for measuring deposition of particulate contaminants in pulp and paper slurries | |
| US5512137A (en) | Method and apparatus for measuring contaminating impurities in pulp slurry | |
| JP2000117173A (en) | Method and apparatus for monitoring liquid membrane, method and system for controlling production of web | |
| CN112414903A (en) | Particle size detection device | |
| Pigorsch et al. | Applications of NIR Spectral Imaging Techniques to Paper Analysis. | |
| EP2725349A1 (en) | Device for predicting crack generation in dry noodles and classification system | |
| KR20100026619A (en) | Glass inspection apparatus and inspection method thereof | |
| RU2798387C2 (en) | Method for assessing hydrophobic impurities in cellulose pulp or in paper-making system | |
| KR102676281B1 (en) | How to Measure Hydrophobic Contaminants in a Pulp Slurry or Paper Making System | |
| CN214150318U (en) | Particle size detection device | |
| JP2004510155A (en) | Method and apparatus for measuring solid particles in a pulp suspension | |
| Waller | On-line papermaking sensors: An historical perspective | |
| JP2019124522A (en) | Inspection method for wet paper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Ref document number: 124022 Country of ref document: FI Kind code of ref document: B |
|
| MM | Patent lapsed |