سال انتشار: ۱۳۹۱
محل انتشار: چهاردهمین کنگره ملی مهندسی شیمی ایران
تعداد صفحات: ۴
ali asghar pasban – Petroleum Refining Research Division, Research Institute of Petroleum Industry, Tehran
Mahmoud Bayat –
Ali Akbar miran beigi –
Mohammad reza talaei –
In this research, a new method was developed in order to decrease total acid number of off-spec crude oils, especially for high molecular crude oil matrices. In order to avoid from metal corrosion in pipes, pumps and units in refining process and transport lines of crude oil, a special care must be applied to control acidity level of heavy crude oils.Acid content of Nowrooz crude oil was reduced from 7.6 mgKOH/g to 1.2 mgKOH/g after being desalted, using a superior demulsifier. Acidity distribution, in different fractions of desalted Nowrouz crude oil, shows a maximum value of acidity in lube cut fraction, which may be referred to as naphthenic acids. The method was ideally suited for acidity reduction of heavy crude oils.