PROCESS DESIGN OF DISTILLATION OF CRUDE OIL AND CORROSION CONTROL IN OVERHEAD SYSTEM

Abstract

This project assigned by Attock Oil Refinery (ARL) involves the process design of distillation of crude and corrosion removal in the distillation overhead system. Corrosion in the overhead system can cause production loss and unexpected shutdowns, mostly due to leftover salts from the desalter. So, to minimize the effect of corrosion, corrosion neutralizer (methylamine) and corrosion inhibitors are being used to neutralize the pH of the salt and protect the pipelines and 3-phase separator. The project aims to optimize the distillation process to improve product quality and ensure the efficient removal of corrosion in the overhead system to improve production reliability. Corrosion caused significant damage to pipes and equipment of the oil and gas industry. Unexpected shutdowns, loss of production and product quality are greatly affected. This review will cover the types of corrosion, how corrosive salt reacts with metal and its prevention and mitigation method in crude distillation overhead system. This review will also include a case study on crude distillation overhead system, factors responsible for corrosion in crude distillation overhead system and the economic cost of corrosion. The major Problem oil and gas industry facing is corrosion. Each has similar or different methods to reduce the effect of corrosion in distillation overhead system. The methods the company applies depend totally on the composition of crude oil and presence of salts. The report contains several methods in order to mitigate the effect of corrosion in distillation overhead system. Amine addition, corrosion inhibitor, material of selection and use of CORROSOMETER are discussed in detai