Transcript of CEMTREX, INC. MODCON SYSTEMS LTD NIR Systems July 2010.
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- CEMTREX, INC. MODCON SYSTEMS LTD NIR Systems July 2010
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- NIR Spectroscopy Principle BeerLambert law Logarithmic
dependence between the transmission T, of light through a substance
and the product of the absorption A coefficient of the substance, ,
and the distance the light travels through the material (i.e. the
path length), .
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- NIR Analyzers Advantage Low Cost of Ownership Optimized
production processes by real time monitoring Improved process
knowledge Expensive and time consuming laboratory analyses are no
longer necessary Improved quality assurance Minimal maintenance
required Easy to calibrate - automatic calibration model updating
Powerful communication system
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- Beacon 3000 NIR Analyzer Advantage Connection to up to 8
process stream sensors No longer location-specific can be situated
up to 2 miles (3,2km) away from main analyzer Use of standard
telecommunication fiber optics Contains no moving parts No
electricity required
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- Block Diagram DCS Analyzer Processor Controller Field Units
installed throughout the plant Fiber Optic Cable
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- Field Unit Operation Conditions Haze free Max. Pressure- 550
psi (40 bar) Flow rate- 1 l/min to 3 l/min Temperature- Above Cloud
point to +160C (300F) Field Unit Sample Cell Probe
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- No Effect of Fiber Length Wavelength, nm
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- From Spectral Information to Electronic Data Field Unit
Detector Module Measured Spectra Processor Measured Spectra
Properties Calculation Reports Light Source
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- Online Sample Collection and Model Building Analyzer Control
Room Control Room Plant Lab Service Center Service Center Save
Spectrum Save Spectrum Save Spectrum Save Spectrum Model Field
Process
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- Principles of Chemo-metrics Calibration ModelReference
Measurements + Calibration Phase Measurement Phase Unknown Spectra
+ Calibration Model Real Time Results Reference Spectra
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- Typical Gasoline Spectra Wavelength, nm
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- X and Y Data Spectra Property X dataY data Single Spectrum (x
1, x 2... x n ) Wavelength, nm
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- MON of Gasoline - Universal Model NIR Reference
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- Note on Lab Results
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- Statistic Nomenclature Root Mean Square Error of Prediction
Standard Error of Prediction Average Difference between and in
Prediction Set - laboratory reference - calculated value
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- Modcon Solution Free-tune Software This software program is
composed of two sequential blocks: I.PLS regression is used to
build a localized sensitive model (LSM) based on just a small
number of samples. One of the characteristics of this model is its
sensitivity to short term (hours) process variations. Since it is
localized, the model can be quickly built and validated. This
procedure takes up to one week and can be performed prior to
startup. II.A proprietary software program processes the model,
together with the specified plant data, to accurately quantify the
properties. This part deals with predicting the long-term product
variability. LSM Laboratory Data NIR Spectra Monitored Variable
Validity Flag Pre- Processing Advanced Processing
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- Model Updating Model updating during the crude switching
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- Fusion Solutions Sample System Discrete Analyzer Modbus
Distributed Control System NIR Analyzer with Freetune* software
Stream 1 Stream 2 Stream 3 Fiber optic cable Response time: 5-10
min Accuracy: according to ASTM Availability: above 98%
(full-redundant system) NIR
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- Thank You for Your Attention