Crude oil distillation units (CDUs) are the backbone of refineries, separating crude oil into valuable fractions like naphtha, kerosene, diesel, and residual fuels. However, one of the most persistent challenges in CDUs is fouling—the accumulation of unwanted deposits on heat exchanger surfaces, preheat trains, and distillation columns. Fouling reduces heat transfer efficiency, increases energy consumption, and leads to costly downtime. Implementing effective fouling mitigation strategies is essential to maintain operational efficiency and profitability.
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