In January 2016, participants from Cairo University, UOP have started a comprehensive investigation which lasted for a period over six months. It Included inspection, detailed analysis of failed packing, scale analysis and corrosion testing.
Diagnosis included XRD and XRF analysis to examine their mineralogical composition and structure. The results were as following.
Mainly, they were facing a composition of vanadium pentoxide, Potassium carbonate contaminants not filtered properly, and corrosion byproducts like iron carbonate, iron sulfide and nickel sulfide.
Different combinations and formulas were tested to ensure delivering the best cleaning agent for the targeted problem. Benfield system was disintegrated into seventeen loop sections to be cleared separately. Roughly speaking, about 500 cubic meters of chemicals were used in chemical cleaning job and it efficiently achieved the desired goal.