Calculation of Run Length of Coker Fired Heater

Delayed Coker unit is one of the most revenue generating plants so any kind of production loss in DCU is not favorable. But the working life of fired heater is difficult to pridict. Production loss because of one heater will be in the range of 20 – 50 percentages. So it will help to enhance service life of heater if we predict the run length of heater.So In we have developed a model by which we can estimate the run length of the fired heater. For this purpose, we conducted three independent researches and then combined them into one model which will be used to estimate the run length of fired heater. The three studies to be conducted were, Determination of Maximum allowable coke layer formation inside coil, two phase flow inside the coil of heaters and kinetics of Coking process.