November 2001

Special Report: Fluid Flow

Cost-effectively improve hydrotreater designs

When retrofitting for clean fuels specifications, consider present and future flexibility of licensed hydrotreating technologies

de la Fuente, E., Low, G., Haldor Topsoe

With the new fuel specifications in Europe and North America, refiners are searching for answers on the best way to meet the new requirements. A number of questions come to mind. Should the refiner revamp an existing unit or build a new one?    How does a refiner choose the right licensor for the project? And after selecting a licensor, how should the work be divided between the licensor and the E&C contractor? While the work division is more clearly defined for new units, such is not the case for a revamp. This is because the operating conditions for a revamp unit are constrained by existing equipment. Very often, tradeoffs between hydrogen partial pressure, reactor volume,

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