Yes and No. If the economics are on the driver seat you don’t have a choice but blend in some of your good feed with ATB’s. The rule of thumb is to blend around 10% to 15% of your total feed rate. It can be done, use more catalyst, increase cat circulation and if you can, put naphtha around the ring where the feed vaporizes. It will help to reduce the viscosity of the feed and hence contact time. I say go for it and watch it closely.
