Hplc separation and quantitation of heavy petroleum fractions

G - Physics – 01 – N

Patent

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G01N 30/96 (2006.01) G01N 33/28 (2006.01)

Patent

CA 2753358

The present invention provides quantitation of seven classes of compounds (saturates, 1 -4+ ring aromatics, sulfides, and polars) present in petroleum streams boiling from 550 - 1050°F. Operating the present invention in the preparative mode will allow us to load and collect multi-milligram amounts of material. In the present invention, all seven fractions are produced in a single run, whereas the most commonly used preparative liquid chromatographic separations requires two or more large scale separations to generate similar fractions. The present invention uses 100 times less solvent. The present invention protocol provides a quicker and cheaper alternative to most commonly used preparative liquid chromatographic separations and is flexible enough to target many refining and chemicals problems.

La présente invention porte sur la quantification de sept classes de composés (saturés, aromatiques cycliques en 14+, sulfures et polaires) présents dans des courants de pétrole ayant un point d'ébullition de 550-1050°F. La mise en uvre de la présente invention en mode préparatif permettra de charger et de recueillir des quantités de plusieurs milligrammes de matière. Dans la présente invention, les sept fractions sont toutes produites en un seul passage, alors que les séparations par chromatographie liquide préparative communément utilisées nécessitent au moins deux séparations à grande échelle pour produire des fractions similaires. La présente invention utilise 100 fois moins de solvant. Le mode opératoire de la présente invention fournit une alternative plus rapide et moins chère aux séparations par chromatographie liquide préparative communément utilisées et est suffisamment souple pour cibler de nombreux problèmes de raffinage et de produits chimiques.

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