The efficiency of the High Pressure Stripper is a very important parameter in the optimum operation of any urea plant. Fouling of the HP stripper can reduce the efficiency and oil is a typical risk for fouling. Oil can origin from for example oil seal systems of high pressure reciprocating ammonia and carbamate pumps and carbon dioxide compressors. Oil can easily cause fouling of the liquid
distributor system in the top of the High Pressure Stripper, where small holes are present as the oil can become thick due the stripping of the light components. How to solve this oil fouling problem and how to clean the High Pressure Stripper ?
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