Presentation Profile
Precise Fuel Quality Assessment using Automated Ramsbottom Carbon Residue
Currently Scheduled: 10/15/2025 - 12:30 PM - 12:50 PM
Room: South Lobby
Main Author
Dr. Raj Shah - Koehler Instrument Company
- Angelina Precilla - Koehler Instrument Company
- Lei Andre Delos Reyes - Koehler Instrument Company
- Mojan Jafaripour - Koehler Instrument Company
- William Streiber - Koehler Instrument Company
Abstract:
Accurate quantification of carbon residue in petroleum products is critical for predicting deposit formation and ensuring reliable engine performance. This study evaluates the Koehler Ramsbottom Carbon Residue Apparatus, which incorporates microprocessor-controlled temperature regulation and over‐temperature protection circuitry to streamline ASTM D524 testing. In each analysis, a pre‐conditioned glass bulb is weighed before and after heating at 550 °C for 20 minutes; the residual carbon mass is recorded to calculate the percent carbon residue. Method validation was performed using diesel fuel samples, with duplicate measurements confirming repeatability (average RCR < 0.10 %). The device’s automatic temperature control and built‐in data logging significantly reduce operator variability and improve throughput compared to manual furnaces. Low carbon residue values observed in tested diesel samples demonstrate strong thermal stability and minimal deposit‐forming tendencies. By delivering fast, reproducible, and accurate RCR results, the apparatus supports quality control in refineries, blending facilities, and research laboratories, enabling timely decisions regarding fuel formulation, engine maintenance, and process optimization.
