advances in micro gas chromatography for fixed … hydrocarbon (c1 – c11) analysis column: rxi-1ms...
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ADVANCES IN MICRO GAS CHROMATOGRAPHY FOR FIXED GASES AND LIGHT HYDROCARBON ANALYSIS ON A MICRO GC FUSION
Introduction
• Presented by Debbie Alcorn – Tuesday January 27, 2015
• History of the Micro GC
• 3000 Micro GC
• The Next Generation – Micro GC Fusion
• Micro GC Fusion Features
• Advances in Applications
• Future Developments
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INFICON Global Presence
900 employees; offices in 17 countries
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Micro GC History
• The 3000 Micro Gas Chromatograph (GC) has over ten years of proven
excellent analytical performance
• Micro GC Fusion® expands the capability of the 3000 Micro GC
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2001
3000 Micro GC
Introduced
2013
Micro GC Fusion
Introduced
2010
INFICON Acquired
3000 Micro GC
3000 Micro GC
• Microelectromechanical systems (MEMS) based GC
• Isothermally heated capillary columns
• Micro Thermal Conductivity Detector (µTCD)
• Modular
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3000 Micro GC Applications
The Next Generation – Micro GC Fusion
• Micro GC Fusion builds on proven 3000
Micro GC technology • Utilizes the same MEMS injectors and TCD
• Traditional Micro GC technology is limited
due to: • Isothermal column temperature, leading to potential
carryover issues
• Ambient temperature effects
• Software and operating system compatibility
• Micro GC Fusion addresses these issues
using new technology
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Micro GC Fusion Features
• Temperature programmable columns
• Plug and play modules
• Integrated touch panel display
• Web-based user interface
• Wi-Fi capability
• Integrated sample conditioner
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Temperature Programming
• Fast temperature ramping based on resistive column heating technology
• Ability to ramp up to 300 ºC/min (5 ºC/sec)
• Column length dependent
• Ramping profile is independently optimized for each module
• Compared to one oven for multiple columns in a bench top GC
• Cool down time is optimized to achieve short cycle times
• 1-2 minutes, ramp and column length dependent
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Temperature Programming
• Benefits • Faster analysis of later eluting
compounds
• Improved peak shape and
height
• Improves sensitivity
• Rapid column cleaning
Specifications
Ramp rate Column length dependent, up to 300 ºC/min (5 ºC/sec)
Maximum Temperature Column phase dependent, 190°C to 300°C
Cooldown Column and method dependent, 1 to 2 minutes
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Isothermal vs. Temperature Programming
Isothermal
• Results in broad, late eluting peaks
Temperature programming
• Sharpens peak shape
• Shortens run time
• Improves sensitivity
Example – Propane
• Isothermal ~160 seconds
• Ramping ~50 seconds
• Improved peak shape and height
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Column: RT-Q-Bond
Isothermal column temperature: 55°C
Column: RT-Q-Bond
Temperature Ramp:
50°C(10s)90°C240°C, 2°C/s, 2.2°C/s
Isothermal vs. Temperature Programming
Isothermal – late eluting compounds may interfere with the next run
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Temperature Programming – elutes undesired peaks much faster to avoid carryover
INFICON Advances in Micro Gas Chromatography
Column: RT-Molsieve 5A
Isothermal column temperature: 100°C
Column: RT-Molsieve 5A
Temperature Ramp: 100°C(10s)200°C(2°C/s)
Plug and Play Modules
• Modules can be swapped out for easy maintenance or application
changes
• No “commissioning” or “decommissioning” modules
GC connector
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User Interface
• Web-based software eliminates operating system
compatibility issues
• License-free
• Works with any platform (Android, Apple, Windows)
• On-board hard drive stores hundreds of thousands of
runs
Internet Explorer
Version 10 and above
Mozilla
Firefox
Chrome
Apple
Safari
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Micro GC Fusion Connectivity
• Micro GC Fusion can connect via Wi-Fi to: • Smart phones
• Tablets
• Computers with wireless cards
• Micro GC Fusion can be operated using the touch panel display to: • Run a method or sequence
• View analysis report
• View system status
• Micro GC Fusion can connect via Wi-Fi or LAN to computers for method development and advanced features
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Integrated Sample Conditioner
• An optional integrated sample conditioner can be configured
• The sample conditioner allows for:
• Reduction of sample pressures of up to 1000 psi down to 5-10 psi
• Filtering of particulates
• Heating the sample to 100 ºC
• A quick connect replaces the standard 1/16” inlet
• Can be controlled via the user interface
• No manual operation necessary
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Advances in Applications
• Temperature programming allows for expanded
application capability • Natural gas analysis on one module
• Extended natural gas analysis on two modules
• C2 analysis improvements
• Mud logging
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Natural Gas on One Module
• A single RT-Q-Bond module can be used for C1 to C8 Plus analysis
Column: RT-Q-Bond
Ramp: 60°C (hold 50s) -> 127°C (hold 10s) -> 220°C (hold 110s)
(2°C/s, 2.5°C/s)
N2
methane
CO2
ethane
propane
isobutane
n-butane
isopentane
n-pentane
hexanes
heptanes octanes plus
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Excellent Repeatability
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Extended Natural Gas
• An Rxi-1ms module can be added to conduct
extended hydrocarbon (C1 – C11) analysis
Column: Rxi-1ms
Ramp: 50°C 130°C280°C (2°C/s, 5°C/s) ~3 ppm
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Extended Natural Gas – C12 Analysis
• Rxi-1ms with temperature programming
• Straight chain hydrocarbons (C6 to C12) from a sample bag
overlaid with an extended natural gas calibration gas from a
cylinder
• Requires heated sample
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C2 Analysis
• A RT-U-Bond module is typically used to
analyze C2 compounds
• Temperature programming allows for
faster run time and improved peak shape
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Acetylene
Ethane
Ethylene
CO2
Column: RT-U-Bond
Isothermal Column Temperature: 50°C
Column: RT-U-Bond
Temperature Ramp:
50°C(30s)120°C, 3°C/s
Mud Logging
• Mud logging is the creation of detailed reports of a borehole on a
well site during active drilling
• Liquid, or “mud”, is used as the drilling fluid to bring gas, formation
fluids, and rock cuttings to the surface for analysis
• A mud log provides key geographical information, including lithology,
rate of penetration, and hydrocarbon content
• The concentration of compounds is critical and must be performed
on a continuous, 24-7 basis
• Two methods were developed:
• C1 to C5 in 30 seconds
• C1 to C8 in 60 seconds
• Still being optimized
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Mud Logging in 30 Seconds
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Column: RT-Q-Bond
Isothermal column temperature: 55°C
Mud Logging in 30 Seconds
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Column: Rxi-1ms
Isothermal column temperature: 90°C
Extended Mud Logging
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Column: RT-Q-Bond
Temperature Ramp:
55°C(15s hold)220°C(10s hold), 7°C/s
Extended Mud Logging
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Column: Rxi-1ms
Temperature Ramp:
75°C(9s hold)220°C(12s hold), 7°C/s
Future Developments
• Four module Micro GC Fusion expands application capability • Fixed gases, light hydrocarbons up to C12, and olefins
• Refinery gas analysis
• Reactor gas analysis
• Air analysis for natural gas
• Available in 2015
• Additional applications:
• Syngas, biogas
• Sulfur analysis - SO2, H2S
• Natural gas odorants - TBM and THT
• Dissolved gas analysis
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Conclusion
• Building on proven MEMS technology, Micro GC Fusion extends the
capability of the previous generation
• Using temperature programming, Micro GC Fusion extends
analytical capability
• Future development will include a four module instrument and
additional applications
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Questions?
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Visit our website www.INFICON.com for more information
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