Fully agreed with views expressed by Chakra. Pl. check the condition of Shell inside at the affected areas also. Malperformance of Desalter and overall S in crude are expected to be attributes.

Material up grades should always be carefully considered. Before decide for one or other material first you have to consolidate your crude mix analysis in what it concerns Sulphur, water contents, H2S and chlorides after that you can establish corrosion trends trough different corrosion coupon materials and chose the one which performs better. Design particularities should also be taken into account. To check the efficiency of the dessalter is a good thing and maybe there is the key solution for your troubles. The injection of fouling inhibitors could also be of help. Regards Luis Marques

>Effective tank farm pre-treatment (demulsifiers) has seen >life improvements in our preheat exchangers by greater than >50%. Along with many other added benefits. A very >under-rated refinery process! > > Mr. Tone_deft please could you contact me at alsrab2001@yahoo.com to understand this idea it seem to be very effective . This adea may be improve the overhead corrosion control. May be your process is different than others any how please try to contact me ASAP.