February 2011

Plant Safety and Environment

Circumvent design issues when adding new hydrotreating units

Follow these guidelines for substantial capital cost savings with existing flare systems

Marchetti, M. H., A-Evangelista, S.A.

Due to higher global demand for gasoil and gasoline along with strict environmental regulations, refineries are incorporating new hydrotreating units into their existing facilities. Just in the southern cone of Latin America (Argentina, Chile and Uruguay) at least five hydrotreating units have been projected and/or built in the last five years. These hydrotreating units aim to lower the sulfur content to 20 ppm–50 ppm on final products. Project attention focuses on these new hydrotreating units, while utilities and other services are evaluated later in the project cycle. Verifying the existing refinery flare systems has to be performed as early as possible during the detail engineering

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