Application of visbreaker analysis tools to optimize...

G - Physics – 01 – N

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G01N 21/53 (2006.01)

Patent

CA 2614888

A system and method for quantifying opaque inhomogeneities within a fluid sample. The system uses an optical lens system (10, 200) to focus a light beam (13, 100) onto a stage (14, 104) where the sample (120) is introduced. The light beam (13, 100) is directed onto the sample in a pattern such that the intensity of transmitted light is measured as a function of path length. A photo detector (16) measures the transmitted light through the sample. Fluctuations in transmitted light intensity are then correlated with detection of opaque inclusions in the sample. The system also includes an automated program which utilizes these optical concentration measurements to determine the fouling potential of visbroken tars and optionally the peptization value (PV), and regulates the introduction of chemical inhibitors into a visbreaker unit to improve the yield or quality of light streams and/ or the economic value of product. Image

L'invention concerne un système et un procédé qui permettent de quantifier des inhomogénéités opaques dans un échantillon fluide. Le système précité fait appel à un système de lentille optique (10, 200) pour focaliser un faisceau lumineux (13, 100) sur une cellule (14, 104) dans laquelle l'échantillon (120) est introduit. Le faisceau lumineux (13, 100) est dirigé sur l'échantillon de telle manière que l'intensité de la lumière transmise est mesurée en fonction d'une longueur de trajectoire. Un photodétecteur (16) mesure la lumière transmise à travers l'échantillon. Les fluctuations dans l'intensité de la lumière transmise sont alors corrélées à la détection d'inclusions opaques dans l'échantillon. Le système comprend également un programme automatisé qui utilise les mesures de concentration optique pour déterminer le potentiel d'encrassement de goudrons à viscosité réduite et, facultativement, la valeur de peptisation (VP), et qui régule l'introduction d'inhibiteurs chimiques dans une unité de viscoréduction afin d'améliorer le rendement ou la qualité de flux légers et/ou la valeur économique du produit.

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