improving analysis through innovations in gas sampling · 2 presenter: tony wimpenny • beng, msc...
TRANSCRIPT
![Page 1: Improving Analysis through Innovations in Gas Sampling · 2 Presenter: Tony Wimpenny • Beng, Msc from University of Bath, Manchester – Specialising in materials • 7 years Aerospace](https://reader034.vdocuments.us/reader034/viewer/2022050207/5f5a2fdcdf661a61cf340fe9/html5/thumbnails/1.jpg)
Standards
Certification
Education & Training
Publishing
Conferences & Exhibits
Improving Analysis
through Innovations in
Gas SamplingTony Wimpenny
Orbital Gas Systems, UK
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2
Presenter: Tony Wimpenny
• Beng, Msc from University of Bath, Manchester– Specialising in materials
• 7 years Aerospace Engineering– Including 4 years in Bristol, UK and 3 years in Toulouse, France
• 1 year Production & Export @ EnDet / VE Technology– Produced and exported new advanced gas sampling technology
• 4 years (and counting!) International Sales @ Orbital– Manage global sales network and responsible for growth of sales
of two patented product lines: VE Technology® and GasPT®
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Analyser
Data
Sampling System
Gas Quality X
(in pipeline / vessel)
Gas Quality X?
Gas Quality X’?
Gas Quality Y??
Basics of Sampling
A Simple Illustration
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How to Achieve Good Measurement:
• I just need to buy the best (most accurate) analyser, right?
(wrong!)
• Need to safely deliver gas from process to analyser:
• Sample probe
• Filtration
• Pressure reduction
• Sample transport tubing
• Sampling system is as critical as the analyser in achieving
good measurement
Achieving Good Measurement
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Probe Design: In Pipeline
• Wake frequency headaches
• Gas disturbance issues at probe tip
• Contamination issues
• Surfaces and volumes
Typical Probe Design
Pipeline Type
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Illustration: Aerodynamic versus Non-Aerodynamic Shapes
Typical Probe Design
Pipeline Type
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Illustration: Localised Disturbance NOT Representative
Typical Probe Design
Pipeline Type
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Probe Design: In Pipeline
• Wake frequency headaches solved!
• Gas disturbance issues at probe tip and contamination issues solved!
• Surfaces and volumes best available for measurement performance!
*see www.orbitalgas.com/patents for more information
Alternative Probe Design
Pipeline Type
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• White Paper on Elimination of VIV by T. Knight, A. Wimpenny, Z. He (available for distribution)
• Scruton, C., Walshe, D.E.J., 1957. A means for avoiding wind-excited oscillations of structures
with circular or nearly circular cross section, Nat. Phys. Lab. Aero. Rep. 335.
• Woodgate, L., Maybrey, J.F.M., 1959. Further experiments on the use of helical strakes for
avoiding wind excited oscillations of structures of circular or nearly circular section, National
Physical Laboratory, Aero Report Number 381.
• CFD Studies – by Daily Thermetrics Corp. (available for distribution – June 2017)
• Lab Studies – by Bath University and University of Manchester (available for distribution)
• Practical Study – SwRI® in the High Pressure Loop at the Metering Research Facility in San
Antonio (available for distribution)
US PATENT 8424396 B2, US 9,528,917 B2 US PAT. APPLN. 15/386616 AND WORLDWIDE PATENTS AND APPLNS. PENDING
Helical Strakes Supporting Info
Numerous Papers & Studies
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12” Line
7.625” Immersion Depth
Natural Gas
US PATENT 8424396 B2, US 9,528,917 B2 US PAT. APPLN. 15/386616 AND WORLDWIDE PATENTS AND APPLNS. PENDING
12” Line Findings 0.4-0.6 WF Ratio
In-Line Resonance
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12” Line
7.625” Immersion Depth
Natural Gas
US PATENT 8424396 B2, US 9,528,917 B2 US PAT. APPLN. 15/386616 AND WORLDWIDE PATENTS AND APPLNS. PENDING
12” Line Findings 0.8-1.0 WF Ratio
Transverse Resonance
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Probe Design: In Bed
• Unhelpful – doesn’t deliver timely or accurate results
• Unreliable – subject to contamination issues
Typical Probe Design
In-bed Type
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Probe Design: In Bed
• Small internal volume
• Electropolished (and inert) surfaces
• Tip design eliminates particulate ingress
• Combined sampling and temperature
*see www.orbitalgas.com/patents for more information
Alternative Probe Design
In-bed Type
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Impact on purge time / analytical response, filtration, anti-JT heating, emissions!
Surfaces and Volume
Effects on Sampling and Analysis
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Images courtesy of Phil Harris (upper), Anipol (lower)
Surfaces and Volume
Effects on Sampling and Analysis
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Mixing volumes increase lag times and affect measurement accuracy / response!
Surfaces and Volume
Effects on Sampling and Analysis
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Mixing volumes increase lag times and affect measurement accuracy / response!
Valve Design
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www.orbitalgas.com/patents for more information
Alternative Valve Design
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Filtration: To collect contamination to prevent it reaching (damaging) the analyser
• Various types
• Typically a mixing volume and large surface area
• Accumulate significant contamination which alters chemical identity of fresh sample
• Changing a filter cartridge may leave residual contamination in filter housing
Filtration
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Filtration: To collect contamination to prevent it reaching (damaging) the analyser
• Aerodynamic probe tip prevents contamination even entering the system!
• In-line filter improves flow path and eliminates mixing volumes
• Sintered stainless steel design ensures similar material chemistry, can be inert coated
• When filter is changed, all contamination is removed
Alternative Filtration
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Pressure Reduction / Monitoring
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Pressure Reduction / Monitoring
Alternative Method
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Pressure Reduction / Monitoring
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Pre-Heated Sample
passed through critical
orifice to cut the pressure
Sample delivered directly to
analyser, without passing
through regulator
By-pass loop contains
necessary control and
monitoring functions
Pressure Reduction / Monitoring
Alternative Method
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Sample System Comparison
Typical v Alternative, using H2S
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Comparison between Test Rig 'Input' and Output from VE system
Maxum Output
Input from test rig
VE
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Sample System Comparison
Typical v Alternative, using H2S
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Comparison between Test Rig 'Input' and Output from Conventional system
Maxum Output
Input from test rig
Typical
Test Rig
Sample System Comparison
Typical v Alternative, using H2S
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• The sampling aspect of process measurement is much more scientific and much more complex than is often perceived (view), but is critical to safe and efficient gas management
• Alternative sample system design delivers significant benefits in a number of aspects, each or all of which may be your project or corporate priority:• Safety
• Measurement performance (sometimes with safety implication also)
• Ongoing costs (reliability, maintenance, efficiency)
• Ease of use (simple installation, minimal maintenance)
• Environment (low volume, efficient)
• Sampling can and will affect your daily operations!
Closing Remarks
The Importance of Sampling for Analytics
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Thank you for your time and attention