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
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
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 Ceased 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 |
| 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 |
| EP2034303A4 (de) * | 2006-05-30 | 2012-07-04 | Diesel United Ltd | Vorrichtung und verfahren zur konzentrationsmessung magnetischer stoffe |
| DE102017114566A1 (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 not_active Ceased
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 (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2034303A4 (de) * | 2006-05-30 | 2012-07-04 | Diesel United Ltd | Vorrichtung und verfahren zur konzentrationsmessung magnetischer stoffe |
| EP1933129A2 (de) | 2006-12-15 | 2008-06-18 | Prüftechnik Dieter Busch Ag | Verfahren und Vorrichtung zum Erfassen von Partikeln in einer strömenden Flüssigkeit |
| US8354836B2 (en) | 2006-12-15 | 2013-01-15 | Prüftechnik 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 |
| 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 |
| 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 |
| DE102017114566A1 (de) | 2017-06-29 | 2019-01-03 | Aixtron Se | Verfahren zur Bestimmung der Dampfkonzentration unter Verwendung der magnetischen Eigenschaften des Dampfes |
| WO2019002280A1 (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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