Evaluación del daño por carburización de un tubo retirado de servicio de un horno de pirólisis

Hydrocarbon pyrolysis is a process characterized by carried out for long periods at temperatures above 843° C and environment highly reducing. These severe conditions contribute to deterioration by carburizacion of the coils of the furnaces which carries out the process of thermal breakage by pyrolysis of hydrocarbons. In this work it was evaluated the damage state of a section of the coil in the radiant zone of a pyrolysis furnace of ethane to ethylene production. This tube was removed from service by coking. Further analysis of Electronic Scanning Microscopy, metallographies, chemical composition analysis, hardness and microhardness, allowed to evaluate and to establish the state of damage by carburizing.