Delayed Coker Unit Valve Isolation Case Study

This case study details the implementation of ValvTechnologies' isolation valves at Ecopetrol's Delayed Coker Unit in Colombia. The primary objective was to enable the replacement of overhead bottoms valves without shutting down the entire unit, thereby saving significant operational costs. The study outlines the challenges faced by Ecopetrol, including the need for zero leakage valves due to safety concerns associated with high temperatures and H2S presence. ValvTechnologies' valves were chosen for their metal-to-metal seating and continuous steam purge system, which prevents coke buildup. The valves were subjected to rigorous testing, including hydrostatic tests at various pressures, and met the acceptance criteria of ISO 5208 Rate A. The installation allowed for the operation of one train while performing maintenance, ensuring safety for personnel and the environment. The case study emphasizes the importance of specialized valve design in the coking process and highlights the successful collaboration between ValvTechnologies and Ecopetrol.