CN105806869A - Industrial on-line nuclear magnetic resonance analyzer - Google Patents
Industrial on-line nuclear magnetic resonance analyzer Download PDFInfo
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- CN105806869A CN105806869A CN201410833894.2A CN201410833894A CN105806869A CN 105806869 A CN105806869 A CN 105806869A CN 201410833894 A CN201410833894 A CN 201410833894A CN 105806869 A CN105806869 A CN 105806869A
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Abstract
The invention relates to a nuclear magnetic resonance apparatus and concretely relates to an industrial on-line nuclear magnetic resonance analyzer. The industrial on-line nuclear magnetic resonance analyzer mainly comprises a sample treatment system, a magnet system (comprising a magnet temperature control system and a shimming system), a probe system and a console system. The magnet system utilizes a permanent magnet system, the probe system utilizes a radial flow-type vacuum Dewar structure and the console system utilizes a digital emitting-reception system. The industrial on-line nuclear magnetic resonance analyzer is mainly used for substance ingredient analysis and physical and chemical parameter analysis in industries of petroleum, chemical engineering, petrochemical and foods. The industrial on-line nuclear magnetic resonance analyzer has the advantages of fast real-time analysis speed, high accuracy, small maintenance amount, low cost, reliability and stability.
Description
Technical field
The present invention relates to nuclear magnetic resonance apparatus, be specifically related to a kind of industry on-line NMR analyser.
Background technology
The aspect great majority such as the material composition analysis of the industries such as domestic petroleum, chemical industry, food and physical and chemical parameter analysis adopt Laboratory Instruments analysis, need manual sampling, analyze detection parameter kind more, sample state is bigger with actual process deviation, the analysis result provided is seriously delayed, it is impossible to real-time instruction explained hereafter.Although and adopt laboratory nuclear magnetic resonance spectrometer also to be able to be analyzed, but it is not strong to face real-time equally.What also have the employing of laboratory nuclear magnetic resonance spectrometer is superconducting magnet, it is necessary to constantly carrying out supplementing liquid nitrogen, regular maintenance cost is high.
The target of modern process industry is to manufacture high value and product up to specification with minimum cost and minimum environmental pressure for cost.Therefore the material composition of sample stream and the fast quantification of physical and chemical parameter and qualitative analysis are become the urgent needs of industry.
Some enterprises also have employing On-line NIR instrument to carry out material composition analysis and physical and chemical parameter analysis, but On-line NIR instrument is high to sample requirement, it is impossible to analyze opaque sample, it is necessary to standard sample periodic calibrating.The poor repeatability of instrument, accuracy are low, maintenance is big, fault rate is high.
Summary of the invention
For the defect that existing industrial material component analysis and physical and chemical parameter analysis and detecting instrument exist, it is proposed that the industrial on-line NMR analyser that a kind of real-time analysis speed is fast, accuracy is high, maintenance is little, with low cost, reliable and stable.
In order to achieve the above object, the present invention adopts the following technical scheme that
The present invention is mainly made up of sample processing system, magnet system (including magnet temperature control system and shimming system), probe system, control feature.
Sample from process pipe is flow to trip temperature, pressure, flow velocity adjustment by sample processing system, and by this system, the sample complete from instrument test is returned to process pipe, all adopts cutting ferrule pipeline connecting mode.
Magnet system adopts NdFeB Permanent Magnets material, reduces complete machine cost.Permanent magnet systems also includes temperature control system and shimming system, and shimming system includes passive shimming system and active shimming system.
Probe system adopts radial-flow type vacuum dewar structure.The temperature of industrial pipeline sample and the temperature difference of magnet cause that heat transmission affects the stability of magnet, and then affect the performance of complete machine, it is necessary to nmr probe is carried out insulated design.Nmr probe adopts welding dissimilar materials, and radio frequency LC oscillating circuit tunes.
Control feature includes embedded signal processing system, RF digital emission system, Digital Intermediate Frequency Receiving System, duplexer system.Embedded signal processing system controls RF digital emission system and launches radiofrequency signal through duplexer to probe system, excite the raw nuclear magnetic resonance, NMR free induction decay signal of sample miscarriage, the free induction decay signal produced is via entering Digital Intermediate Frequency Receiving System after duplexer, carry out Signal Pretreatment, digital quadrature detection, digital filterings etc. process, and then return to embedded signal processing system.
Compared with prior art, industry on-line NMR analysis detection possesses very big advantage to the present invention, belongs to non-contact type on-line measurement, and sample processing device separates with detection sensing device, and instrument is without mobile parts, and reliable and practical, maintenance is little.Highgrade integration control feature makes the real-time of complete machine analyze speed soon, and accuracy is high.Adopting permanent magnet systems as core component, maintenance is little, with low cost.The insulated design of probe system, reduces ambient temperature and instrument sample is measured the interference of process, and stability of instrument, accuracy are higher.
Accompanying drawing explanation
Fig. 1 is present configuration block diagram；
Fig. 2 is control feature structured flowchart.
Detailed description of the invention
It is described with reference to the accompanying drawings the structure of patent of the present invention.
A kind of industry on-line NMR analyser, see Fig. 1, sample processing system is that sample is collected and induction system, adopt cutting ferrule pipeline connecting mode, the particulate leaching of 50 microns is will be greater than by filter, going forward side by side trip temperature pressure adjustment, pressure limit meets the pressure requirements that probe system bears, lower than 30,000 grams/cc.
Magnet system adopts NdFeB Permanent Magnets material, and body resolution is lower than 100ppm, magnetic field intensity scope 1.4T-2.1T.Permanent magnet systems also includes temperature control system and shimming system, and temperature control system adopts PID thermostatic control, is carried out continuous heating by being wound around the magnet heating tape of a week, and temperature detection adopts high-precision platinum resistor PT100.Shimming system includes passive shimming system and active shimming system.Passive shimming system adopts machinery to pad the fine setting of whole screw, and active shimming system adopts solenoid to compensate magnetic field.
Probe system adopts radial-flow type vacuum dewar structure.Nmr probe is placed directly in magnet bore, its material directly affects magnetic field intensity and uniformity of magnetic field, the present invention adopt the combinations of materials such as earthenware, titanium pipe, molybdenum pipe and rustless steel both to ensure magnetic field environment is destroyed in turn ensure that the requirement of strength being connected with sampling system.
Control feature includes embedded signal processing system, RF digital emission system, Digital Intermediate Frequency Receiving System, duplexer system.Embedded signal processing system is based on ARM Embedded Hardware Platform Linux system, loads upper computer software bag.Upper computer software bag can carry out nuclear magnetic resoance spectrum pretreatment, supports stoichiometry modeling and technique parameter prediction function.By ethernet communication, data processed result is exported to DCS system.RF digital emission system adopts acp chip to be Direct Digital Frequency Synthesizers AD9910.Digital Intermediate Frequency Receiving System adopts acp chip to be intermediate frequency diversity receptor AD6655, FPGA be made directly control.That duplexer adopts is the N120-3067G of Pehanorm prestige company.
Utilizing stoichiometry modeling technique, set up technological parameter and nuclear magnetic resonance, NMR spectrum model, through Data Analysis Services in control feature, final output result is transferred to Central Control Room by ethernet communication.
Claims (5)
1. an industrial on-line NMR analyser, main by sample processing system, magnet system, probe system, control feature forms, it is characterized in that: sample processing system all adopts cutting ferrule pipeline connecting mode, magnet system adopts NdFeB Permanent Magnets material, permanent magnet systems also includes temperature control system and shimming system, shimming system includes passive shimming system and active shimming system, probe system adopts radial-flow type vacuum dewar structure welding dissimilar materials, control feature is by embedded signal processing system, RF digital emission system, Digital Intermediate Frequency Receiving System, duplexer system forms.
2. a kind of industry on-line NMR analyser according to claim 1, it is characterised in that: the filter of sample processing system will be greater than the particulate leaching of 50 microns, and pressure limit meets the pressure requirements that probe system bears, lower than 30,000 grams/cc.
3. a kind of industry on-line NMR analyser according to claim 1, it is characterised in that: magnet system body resolution is lower than 100ppm, magnetic field intensity scope 1.4T-2.1T.
4. a kind of industry on-line NMR analyser according to claim 1, it is characterised in that: probe system adopts the combination of materials welding such as earthenware, titanium pipe, molybdenum pipe and rustless steel.
5. a kind of industry on-line NMR analyser according to claim 1, it is characterized in that: the embedded signal processing system in control feature controls RF digital emission system and launches radiofrequency signal through duplexer to probe system, excite the raw nuclear magnetic resonance, NMR free induction decay signal of sample miscarriage, the free induction decay signal produced is via entering Digital Intermediate Frequency Receiving System after duplexer, carry out Signal Pretreatment, digital quadrature detection, digital filterings etc. process, and then return to embedded signal processing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410833894.2A CN105806869A (en) | 2014-12-29 | 2014-12-29 | Industrial on-line nuclear magnetic resonance analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410833894.2A CN105806869A (en) | 2014-12-29 | 2014-12-29 | Industrial on-line nuclear magnetic resonance analyzer |
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| CN105806869A true CN105806869A (en) | 2016-07-27 |
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| CN201410833894.2A Pending CN105806869A (en) | 2014-12-29 | 2014-12-29 | Industrial on-line nuclear magnetic resonance analyzer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378650A (en) * | 1999-09-13 | 2002-11-06 | 福克斯鲍罗核磁共振有限公司 | Flow-through probe for NMR spectrometers |
| CN1529153A (en) * | 2003-09-28 | 2004-09-15 | 华东师范大学 | Desk nuclear magnetic resonance small spectrometer |
| CN1543913A (en) * | 2003-11-25 | 2004-11-10 | 沈阳东软波谱磁共振技术有限公司 | Magnet for head and limb magnetic resonance imaging device |
| WO2005062064A1 (en) * | 2003-12-24 | 2005-07-07 | Qinetiq Limited | Combined magnetic field gradient and magnetic field strength sensor |
| JP2006046968A (en) * | 2004-07-30 | 2006-02-16 | Japan Science & Technology Agency | Low-temperature flow high-speed nmr measurement method and low-temperature flow high-speed injection nmr |
| CN204439584U (en) * | 2014-12-29 | 2015-07-01 | 丹东东方测控技术股份有限公司 | A kind of industrial on-line NMR analyser |
-
2014
- 2014-12-29 CN CN201410833894.2A patent/CN105806869A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378650A (en) * | 1999-09-13 | 2002-11-06 | 福克斯鲍罗核磁共振有限公司 | Flow-through probe for NMR spectrometers |
| CN1529153A (en) * | 2003-09-28 | 2004-09-15 | 华东师范大学 | Desk nuclear magnetic resonance small spectrometer |
| CN1543913A (en) * | 2003-11-25 | 2004-11-10 | 沈阳东软波谱磁共振技术有限公司 | Magnet for head and limb magnetic resonance imaging device |
| WO2005062064A1 (en) * | 2003-12-24 | 2005-07-07 | Qinetiq Limited | Combined magnetic field gradient and magnetic field strength sensor |
| JP2006046968A (en) * | 2004-07-30 | 2006-02-16 | Japan Science & Technology Agency | Low-temperature flow high-speed nmr measurement method and low-temperature flow high-speed injection nmr |
| CN204439584U (en) * | 2014-12-29 | 2015-07-01 | 丹东东方测控技术股份有限公司 | A kind of industrial on-line NMR analyser |
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Application publication date: 20160727 |
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