PD-15-28 Optimizing Diesel Hydrotreater Feed Content and ULSD Quality While Respecting Feed Header Hydraulics

Description:

How does a refinery, manufacturing diesel-finished product without a blender, ensure that the ultra-low sulfur product remains on-specification, still with optimizing a variety of gasoil-like streams being fed to that process unit? This presentation discusses the diesel hydrotreater technical challenges at the Total Port Arthur refinery, and shows the control and optimization solution deployed during the 2013-2015 period. Specific aspects of the projects are described in this presentation, including dynamic modeling of the hydraulic constraints in the feed header, control of ultra-low sulfur specification at the reactor section, and optimization of jet back-blending with maintaining multiple diesel properties on specification.