Smart Sample Systems for At-Line Analyzers D.E. Podkulski ExxonMobil Chemical Co Baytown, Texas R...
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Transcript of Smart Sample Systems for At-Line Analyzers D.E. Podkulski ExxonMobil Chemical Co Baytown, Texas R...
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Smart Sample Systemsfor At-Line Analyzers
D.E. PodkulskiExxonMobil Chemical CoBaytown, Texas
R PuzicIOL, Products and Chemicals DivisionSarnia22 Jan 02
IFPAC 2002San Diego, CA23 January, 2002
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Content
• Status of At-Line systems
• At-Line sample system requirements
• Application of modular sample system
• Robotics for At-Line systems
• Sample integrity/ Cross contamination
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Status of at-line systems
• Several applications in large integrated olefins plants
• At-Line system for marine shipments
• At-line system for environmental analysis
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At-Line sample system requirements• Sample integrity
– Cross contamination– Degradation– Assurance of flow
• Pretreatment– Filtration– Phase separation
• Sample Introduction– Pressure– Temperature– Residence time
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Application of Modular Sample Systems
• Reduced sample volume requirements
• Minimized cross contamination
• Simplified component layout
• More effective temperature control
• Improved maintenance
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Application of Modular Sample Systems
ConventionalSystem
Modular
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Application of Modular Sample Systems
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Application of Modular Sample Systems
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Application of Modular Sample Systems
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Robotics for At-Line Systems
• Carousel sampler– Basic sample introduction device
• as opposed to bags or sample cylinders• multiple samples at once
• Basic Robotics– Single analysis and sample preparation
• extract solvent removal prior to analysis– Multiple analyses and preparations
• Aromatics product release analyses• Advanced Robotics
– Sample collection and analysis?
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Robotics for At-Line Systems
• Sequential sample analysis using carousel
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Sample Integrity/Cross Contamination
• Reduced or zero dead volume fittings• Silcosteel coated components• Modular components
– Lower volume system
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Smart sample system requirements
• Detect sample presence - Flow - meters are still too big
- Pressure - small, smart ones are available
- Level - small, smart ones are available
• Detect sample position and sequence- Move carousel to selected sample
- Fiber optics - Move sample to transfer position
- Fiber optics
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Smart sample system requirements
• Sample log in capability- Sample number, operator ID, sample
origin- Transmit data to lab or control room
• Transfer sample to analyzer - Purge out sampling system with new
sample- Initiate analysis- Provide sample complete feedback - Prove no cross-contamination
• Flush out sample system - purge sample system with inert
material- prepare system for next analysis
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Smart sample system requirements
• Generate sample system failure alarm- Log alarms for system troubleshooting- E-mail notification in case of errors
• Sample disposal -provide safe storage for disposed samples
-provide inventory status
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Conclusions
• Increasing demand for modular systems
• At-Line systems need small compact sample handling components
• Fully automated smart sample systems
• At-line systems create higher complexity
• Capability needed to handle diverse samples