I know of 6 drum cokers that run on a single fractionator on 12 hr cyles with rates of close to 110,000b/d. The question that is important is to understand if the 6 or 8 drum cokers are on one fractionator or 2. The six drum cokers I mention are making shot coke. They all have new unheading systems with the DeltaValve valve on top and bottom of drum