ThruPlus Delayed Coking—Test Your Knowledge

1. Why has coke drum inside diameter yet to exceed 9,800 millimeters (32 feet)?
2. Why has coke drum height (T/T) not exceeded 29,261 millimeters (96 feet)?
3. How would you operate a 3-drum delayed coker unit?
4. Is it necessary to stream-strip the heavy coker gas oil (HCGO) product?
5. What is the best way to deal with accumulated coke in the fractionator bottom sump?