May 2020

Process Optimization

Rapid crude yield: Merging DHAFE with HTSD

Rapid crude yield (RCY) combines a detailed hydrocarbon analysis of the front end (DHAFE) with high-temperature simulated distillation (HTSD), creating a true boiling point (TBP) curve for a crude oil sample.

Ingham, H., Chevron

Rapid crude yield (RCY) combines a detailed hydrocarbon analysis of the front end (DHAFE) with high-temperature simulated distillation (HTSD), creating a true boiling point (TBP) curve for a crude oil sample. This TBP, combined with whole crude properties (sulfur, nitrogen, microcarbon residue, metals, etc.), are brought together in Chevron’s assay software, creating an accurate description of the crude oil. Chevron uses RCY for tracking crude quality, planning, operations and sales and trading. The analysis rests on merging DHAFE with HTSD to create the TBP curve. The merge is necessary because the solvent required to introduce whole crude into the HTSD gas chromatography column (approxima

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