Simulated Distillation D7798
Applications | | FALCONInstrumentation
Accurate boiling range distribution of hydrocarbons is a cornerstone in fuel quality control, refinery operations and product specification. Simulated distillation according to ASTM D7798 offers a rapid, reliable alternative for characterizing gasoline through crude oil fractions, enabling faster decision-making in blending, compliance and process optimization.
This application note presents the implementation of ASTM D7798 on the CALIDUS™ 101-HT UltraFast GC system. The focus is on demonstrating ultra-fast simulated distillation of liquid fuels up to C50 hydrocarbons in under five minutes, while comparing performance metrics against conventional methods (ASTM D2887, D86).
Samples are introduced via a split/splitless injection port, supporting syringe, autosampler or liquid sample valve delivery. The program-controlled column module (PTCM) employs a MXT-1 resistively heated stainless steel capillary column under rapid temperature ramps. Data acquisition and processing use Chromperfect® CDS with InfoMetrix® LineUp™ and Dragon SimDist© software to generate boiling range distribution profiles conforming to ASTM D7798.
The UltraFast GC achieved complete boiling range profiles for reference gas oil in approximately 200 seconds. Precision improved two- to three-fold compared to ASTM D2887, as evidenced by overlaid replicate chromatograms. High sensitivity and minimal retention time drift ensure reproducible area normalization and accurate boiling point assignments.
Advances in resistive heating materials and column chemistry may extend the scope to heavier fractions beyond C50. Integration with online sampling and machine learning-driven data interpretation promises fully automated, high-throughput workflows. Portable UltraFast GC systems could enable field or at-line monitoring in refineries and terminal operations.
ASTM D7798 implemented on the CALIDUS™ 101-HT UltraFast GC delivers unparalleled speed, precision and compactness for simulated distillation of complex hydrocarbon matrices. This approach enhances refinery throughput, reduces operational costs and supports stringent quality assurance demands.
GC
IndustriesEnergy & Chemicals
ManufacturerFALCON
Summary
Significance of Simulated Distillation D7798
Accurate boiling range distribution of hydrocarbons is a cornerstone in fuel quality control, refinery operations and product specification. Simulated distillation according to ASTM D7798 offers a rapid, reliable alternative for characterizing gasoline through crude oil fractions, enabling faster decision-making in blending, compliance and process optimization.
Study Objectives and Overview
This application note presents the implementation of ASTM D7798 on the CALIDUS™ 101-HT UltraFast GC system. The focus is on demonstrating ultra-fast simulated distillation of liquid fuels up to C50 hydrocarbons in under five minutes, while comparing performance metrics against conventional methods (ASTM D2887, D86).
Methodology
Samples are introduced via a split/splitless injection port, supporting syringe, autosampler or liquid sample valve delivery. The program-controlled column module (PTCM) employs a MXT-1 resistively heated stainless steel capillary column under rapid temperature ramps. Data acquisition and processing use Chromperfect® CDS with InfoMetrix® LineUp™ and Dragon SimDist© software to generate boiling range distribution profiles conforming to ASTM D7798.
Used Instrumentation
- CALIDUS™ 101-HT UltraFast GC
- MXT-1 High Temperature Resistively Heated Stainless Steel Capillary Column
- Split/splitless inlet with septum purge
- Chromperfect® chromatography data system
- InfoMetrix® LineUp™ and Dragon SimDist© on Windows PC
Main Results and Discussion
The UltraFast GC achieved complete boiling range profiles for reference gas oil in approximately 200 seconds. Precision improved two- to three-fold compared to ASTM D2887, as evidenced by overlaid replicate chromatograms. High sensitivity and minimal retention time drift ensure reproducible area normalization and accurate boiling point assignments.
Benefits and Practical Applications
- Rapid turnaround supports real-time process control and blend adjustments
- Enhanced precision allows tighter product specifications and profit optimization
- Compact footprint frees valuable lab and shelter space
- Lower energy consumption and reduced maintenance costs
Future Trends and Potential Uses
Advances in resistive heating materials and column chemistry may extend the scope to heavier fractions beyond C50. Integration with online sampling and machine learning-driven data interpretation promises fully automated, high-throughput workflows. Portable UltraFast GC systems could enable field or at-line monitoring in refineries and terminal operations.
Conclusion
ASTM D7798 implemented on the CALIDUS™ 101-HT UltraFast GC delivers unparalleled speed, precision and compactness for simulated distillation of complex hydrocarbon matrices. This approach enhances refinery throughput, reduces operational costs and supports stringent quality assurance demands.
References
- ASTM D7798: Simulated Distillation of Fuels by GC
- ASTM D2887: Boiling Range Distribution of Petroleum Distillates
- ASTM D86: Distillation of Petroleum Products
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