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In the past, refiners enjoyed a constant supply of the same crude with little variation. Due to this, refineries were designed for stable feed. Today, they buy low-cost, heavy crude that has high variability in quality. In order to separate a liquid feed mixture into its components, refineries use a distillation process. During this process, different products boil off and are recovered at different temperatures, separating the feedstock into broad categories of its component hydrocarbons. The distillation characteristics, i.e., volatility, of hydrocarbons significantly impact the safety and performance of end-products, particularly with fuels and solvents. The boiling range gives information on the composition, the properties, and the behavior of the fuel during storage and use.
ASTM D86 is the historical test method to determine the boiling range of a petroleum product. It determines the boiling range by performing a simple batch distillation. ASTM recently published the ASTM D975-12, which includes an alternate distillation method, ASTM D7345, which uses the process of microdistillation to provide fast results using small sample volume.
This paper discusses the benefits of using a process application of the ASTM D7345 test method to provide real, online distillation analysis to prevent product giveaway and reprocessing, and to meet tight blending specifications at the most reasonable cost.
Please fill in the form below to download the paper. Note: The white paper is in English.