Units where graphitization may be suspected are the FCCU and the _____ unit.

Question

Quizplus · Accepted Answer

Graphitization is a phenomenon that occurs in equipment that experiences high temperatures and pressures, typically above 800°F and 500 PSI. The Fluidized Catalytic Cracking Unit (FCCU) typically operates at temperatures and pressures that are below the threshold where graphitization would occur. The Alky unit and Hydrotreater also operate at relatively low temperatures and pressures, so graphitization is not a concern. The Coker, on the other hand, uses very high temperatures and pressures in the process of converting heavy hydrocarbons into lighter products. As a result, it is possible for graphitization to occur in some of the equipment in the unit, particularly in the coke drums.

Units Where Graphitization May Be Suspected Are the FCCU and the _____