Monitoring-Based Fouling Mitigation in Crude Unit Preheat Trains Using Lab and Field Fouling Units
- Type: Conference Presentation
- Conference Type: AIChE Spring Meeting and Global Congress on Process Safety
- Presentation Date: August 18, 2020
- Duration: 20 minutes
- Skill Level: Intermediate
- PDHs: 0.40
The multi-year investigation in this presentation focused on monitoring-based mitigation to systematically perform the root-cause analysis using lab and field fouling units. The analysis included the effects of crude-oil blending, physical parameters (such as flow velocity and wall shear stress), wall temperature (heat flux), performance of desalter, iron-sulfide induced fouling, asphaltene conversion and the effects of inorganic salts. The fouling data obtained with lab and field-fouling units were used to develop the threshold fouling model, which was then used to develop maps that help identify PHT exchangers that are in the high-fouling zone. The threshold models were also implemented in Hexxcell Studioâ¢ to assess the economic impact of fouling and predict future performance in the pre-heat train operation.
The combination of the fouling data from the lab and field fouling units and the simulations were used for the root-cause analysis based on which an effective mitigation strategy can be developed and its benefits assessed.
|AIChE Member Credits||0.5|
|AIChE Graduate Student Members||Free|
|AIChE Undergraduate Student Members||Free|