عنوان مقاله [English]
نویسنده [English]چکیده [English]
In recent years, by increasing crude oil and its products consumption, the oil quality decreased. In addition, Crude oil refining, produce heavy residue oil that without improvement has only fuel application. One of the important processes that convert heavy residue oil to valuable products is delayed coking. Its products contain gas, liquid, coke. Delayed coking efficiency is depends on feedstocks and operating condition. In this work, the effect of feedstocks and operating condition such as pressure, nitrogen injection, heating rate and recycle on the yield of production on delayed coking process has been investigated. The results show coke efficiency has an inverse ratio with feed API. Liquid products recycle flow (ratio 1 to 5), increasing of nitrogen injection and pressure increasing from 1 to 2.8 bar increase coke efficiency 5%, 2%, and3%, respectively. Also, coke efficiency reduces 2.2% with increasing of heating rate.