WO2004104561A1 - Verfahren und vorrichtung zur messung des gehaltes an ferromagnetischen partikeln in flüssigkeits-suspensionen, aerosolen oder feststoff-gemischen - Google Patents
Verfahren und vorrichtung zur messung des gehaltes an ferromagnetischen partikeln in flüssigkeits-suspensionen, aerosolen oder feststoff-gemischen Download PDFInfo
- Publication number
- WO2004104561A1 WO2004104561A1 PCT/EP2004/005068 EP2004005068W WO2004104561A1 WO 2004104561 A1 WO2004104561 A1 WO 2004104561A1 EP 2004005068 W EP2004005068 W EP 2004005068W WO 2004104561 A1 WO2004104561 A1 WO 2004104561A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetite
- particles
- measuring
- signal
- content
- Prior art date
Links
- 239000002245 particle Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000005294 ferromagnetic effect Effects 0.000 title claims abstract description 8
- 239000006194 liquid suspension Substances 0.000 title claims description 5
- 239000008247 solid mixture Substances 0.000 title claims description 3
- 239000004479 aerosol dispenser Substances 0.000 title 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 9
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 3
- 239000000443 aerosol Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000012491 analyte Substances 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 14
- 238000011156 evaluation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005291 magnetic effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 2
- 239000008263 liquid aerosol Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000012369 In process control Methods 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
Definitions
- the invention relates to a method for the continuous or discontinuous measurement of the content of ferromagnetic particles (eg magnetite, Fe 3 0) in liquid suspensions, aerosols or mixtures with non-magnetic solids during ongoing processes.
- ferromagnetic particles eg magnetite, Fe 3 0
- the invention is described below on the basis of the measurement of suspensions, but the other substance mixture forms can also be treated in the same way.
- the invention further relates to a device for performing this method. It consists at least of a high-frequency generator that feeds two coils with high-frequency current.
- the suspension to be measured in a cuvette or pipeline is used as the coil core for one coil (measuring coil) and a suspension of the same type but free of ferromagnetic particles for the other coil (comparison coil).
- magnetite stands, for example, for ferromagnetic particles, magnetite content for the content of ferromagnetic particles. Due to the different reaction of the magnetite-containing suspension to the high-frequency field, the impedance of the measuring coil and thus the phase and amplitude of the RF signal with respect to the signal at the comparison coil are changed in a characteristic manner.
- the measurement signals are expediently generated via a control computer.
- parameter fields can be created which are stored in the evaluation computer for comparison with unknown suspensions.
- the process step mentioned could be markedly shortened in time while at the same time significantly improving the process reliability, and the production quantity per unit of time could thereby be increased by up to 10% without any other process changes.
- the object is achieved in that even small amounts of magnetic solid particles in liquid suspensions can be detected or the particle content can be determined quantitatively.
- the liquid to be measured is preferably brought into a high-frequency alternating field and the reaction to this field is measured in comparison with a suspension free of magnetic particles or pure carrier liquid. Both the amplitude and the phase position of the RF signal are taken into account.
- the harmonic content is a further preferred parameter.
- the measurement according to the invention can be carried out on sample material or else continuously in the flow through the measuring coil; in the latter case, sampling is not required. This also reduces the dangers when handling hazardous substances (e.g. aniline).
- hazardous substances e.g. aniline
- the process is controlled automatically at the optimal time. This means that the settling process used to date in batch production in aniline production can also be carried out continuously. Overall, a safer and more efficient production is possible: The company estimate assumes an increase in productivity of up to 10%.
- the invention is also suitable for determining the ferrite particle content in aerosols or on other non-magnetic carriers.
- the design freedom in the design of the measuring cells enables applications under a wide variety of conditions.
- the optimal measuring frequency depends on the particle size and the magnetic properties of the particles.
- the raw suspension with a high solids content is placed in the settling tank 2. This remains there, whereby the magnetite particles sink to the bottom due to gravity segregation.
- the suspension to be tested is pumped through this discontinuously or continuously at a low flow rate 5. The latter then returns to the settling tank.
- the signal from the measuring cell 4 like that of a comparison cell 6, which is filled with magnetite-free suspension or pure carrier liquid, reaches the measuring and evaluation unit 7.
- control signals for actuating pumps and / or fittings 8, 9 are generated, which in the case are sufficient low magnetite content, withdraw the suspension from the settling tank 8 and the sewage sludge from the tank sump 9.
- the high-frequency current generated in the high-frequency generator 10 with a frequency optimized for the specific measurement problem is passed both to the coil in the measuring cell 11 and to the comparison cell 12. Changes in the signal of the measuring cell are evaluated via phase and amplitude discriminators 13 and transferred to a control computer 14.
- the control computer determines the data for controlling interfaces 15, which in turn are applied to the actuators 16, e.g. Pumps, control valves etc. work.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003122913 DE10322913A1 (de) | 2003-05-21 | 2003-05-21 | Verfahren und Vorrichtung zur Messung des Gehaltes an ferromagnetischen Partikeln in Flüssigkeits-Suspensionen oder Feststoff-Gemischen |
DE10322913.2 | 2003-05-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004104561A1 true WO2004104561A1 (de) | 2004-12-02 |
Family
ID=33441078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/005068 WO2004104561A1 (de) | 2003-05-21 | 2004-05-12 | Verfahren und vorrichtung zur messung des gehaltes an ferromagnetischen partikeln in flüssigkeits-suspensionen, aerosolen oder feststoff-gemischen |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10322913A1 (de) |
WO (1) | WO2004104561A1 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1933129A2 (de) | 2006-12-15 | 2008-06-18 | Prüftechnik Dieter Busch Ag | Verfahren und Vorrichtung zum Erfassen von Partikeln in einer strömenden Flüssigkeit |
EP2028474A2 (de) | 2007-08-21 | 2009-02-25 | Prüftechnik Dieter Busch Ag | Verfahren und Vorrichtung zum Erfassen von Partikeln in einer strömenden Flüssigkeit |
EP2034303A1 (de) * | 2006-05-30 | 2009-03-11 | Diesel United, Ltd. | Vorrichtung und verfahren zur konzentrationsmessung magnetischer stoffe |
WO2011020861A1 (en) | 2009-08-20 | 2011-02-24 | Novartis Ag | Heterocyclic oxime compounds |
WO2011120826A1 (de) * | 2010-03-31 | 2011-10-06 | Siemens Aktiengesellschaft | Verfahren zur bestimmung der menge magnetischer partikel in einer suspension |
DE102010060131A1 (de) | 2010-10-22 | 2012-04-26 | Helmholtz-Zentrum Dresden - Rossendorf E.V. | Anordnung und Verfahren zur Erfassung des räumlichen Geschwindigkeitsprofils |
WO2019002280A1 (de) | 2017-06-29 | 2019-01-03 | Aixtron Se | Verfahren zur bestimmung der dampfkonzentration unter verwendung der magnetischen eigenschaften des dampfes |
US10295499B2 (en) | 2017-02-16 | 2019-05-21 | Spectro Scientific, Inc. | Ferrous metals measuring magnetometer system and method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4195260A (en) * | 1977-02-09 | 1980-03-25 | Ricoh Company, Ltd. | Apparatus for sensing deterioration of developing substance including ferromagnetic carrier and non-magnetic toner particles |
EP0267021A2 (de) * | 1986-11-04 | 1988-05-11 | Philip Morris Products Inc. | Gerät zur Metalldetektion in einem Fluss von Masseteilchen |
US4841244A (en) * | 1985-10-11 | 1989-06-20 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence | Method and apparatus for on-sine monitoring of wear in machinery |
US5444367A (en) * | 1992-04-06 | 1995-08-22 | Minister Of National Defence | Method and apparatus for detecting particles in a fluid having coils isolated from external vibrations |
US5608316A (en) * | 1995-08-21 | 1997-03-04 | Caterpillar Inc. | Apparatus for detecting particles in a fluid and a method for operating same |
-
2003
- 2003-05-21 DE DE2003122913 patent/DE10322913A1/de not_active Withdrawn
-
2004
- 2004-05-12 WO PCT/EP2004/005068 patent/WO2004104561A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4195260A (en) * | 1977-02-09 | 1980-03-25 | Ricoh Company, Ltd. | Apparatus for sensing deterioration of developing substance including ferromagnetic carrier and non-magnetic toner particles |
US4841244A (en) * | 1985-10-11 | 1989-06-20 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence | Method and apparatus for on-sine monitoring of wear in machinery |
EP0267021A2 (de) * | 1986-11-04 | 1988-05-11 | Philip Morris Products Inc. | Gerät zur Metalldetektion in einem Fluss von Masseteilchen |
US5444367A (en) * | 1992-04-06 | 1995-08-22 | Minister Of National Defence | Method and apparatus for detecting particles in a fluid having coils isolated from external vibrations |
US5608316A (en) * | 1995-08-21 | 1997-03-04 | Caterpillar Inc. | Apparatus for detecting particles in a fluid and a method for operating same |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2034303A1 (de) * | 2006-05-30 | 2009-03-11 | Diesel United, Ltd. | Vorrichtung und verfahren zur konzentrationsmessung magnetischer stoffe |
EP2034303A4 (de) * | 2006-05-30 | 2012-07-04 | Diesel United Ltd | Vorrichtung und verfahren zur konzentrationsmessung magnetischer stoffe |
US8354836B2 (en) | 2006-12-15 | 2013-01-15 | Prüftechnik Dieter Busch AG | Device and process for detecting particles in a flowing liquid |
EP1933129A2 (de) | 2006-12-15 | 2008-06-18 | Prüftechnik Dieter Busch Ag | Verfahren und Vorrichtung zum Erfassen von Partikeln in einer strömenden Flüssigkeit |
DE102007039434A1 (de) | 2007-08-21 | 2009-02-26 | Prüftechnik Dieter Busch AG | Verfahren und Vorrichtung zum Erfassen von Partikeln in einer strömenden Flüssigkeit |
US7956601B2 (en) | 2007-08-21 | 2011-06-07 | Prueftechnik Dieter Busch Ag | Device and process for detecting particles in a flowing liquid |
EP2028474A2 (de) | 2007-08-21 | 2009-02-25 | Prüftechnik Dieter Busch Ag | Verfahren und Vorrichtung zum Erfassen von Partikeln in einer strömenden Flüssigkeit |
WO2011020861A1 (en) | 2009-08-20 | 2011-02-24 | Novartis Ag | Heterocyclic oxime compounds |
WO2011120826A1 (de) * | 2010-03-31 | 2011-10-06 | Siemens Aktiengesellschaft | Verfahren zur bestimmung der menge magnetischer partikel in einer suspension |
DE102010060131A1 (de) | 2010-10-22 | 2012-04-26 | Helmholtz-Zentrum Dresden - Rossendorf E.V. | Anordnung und Verfahren zur Erfassung des räumlichen Geschwindigkeitsprofils |
US10295499B2 (en) | 2017-02-16 | 2019-05-21 | Spectro Scientific, Inc. | Ferrous metals measuring magnetometer system and method |
WO2019002280A1 (de) | 2017-06-29 | 2019-01-03 | Aixtron Se | Verfahren zur bestimmung der dampfkonzentration unter verwendung der magnetischen eigenschaften des dampfes |
DE102017114566A1 (de) | 2017-06-29 | 2019-01-03 | Aixtron Se | Verfahren zur Bestimmung der Dampfkonzentration unter Verwendung der magnetischen Eigenschaften des Dampfes |
Also Published As
Publication number | Publication date |
---|---|
DE10322913A1 (de) | 2004-12-16 |
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