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• Spent caustic after treating LPG in Continuous film contractor is regenerated in oxidizer column using process air and heat followed by removal of disulphide oil with solvent hydrotreated Naphtha. Offgas generated in oxidizer column are burnt in heater. From Past few year, problem of chocking in overhead line of oxidizer column is found which is disturbing overall regeneration process. However, replacement of overhead line was carried out for one time, but after 1-1.5 years, same chocking problem is occuring. Any observation or experience regarding situation and troubleshooting to control and mitigate?

  Dec-2022

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