US oil refinery saves a day of turnaround operation by decontaminating and degassing their coker fractionator with our family of chemicals
Process saved 12-24 hours of outage time; manpower entry with no delays
Significantly reduced mechanical cleaning costs and timelines by dissolving heavy sludge in the fractionator bottoms
LEL and H2S reduced to 0
Award-winning asphaltene dispersant and anti-foulant
Rapid absorption and encapsulation of vapor-state hydrocarbons
H2S scavenger for the rapid and permanent elimination of H2S
Non-hazardous product for effective control of pyrophoric iron deposits
- Coker Fractionator
- Three Stripper Towers
- Pentane Absorber
Previously, the client had utilized terpene-based type chemistries on the towers over a scheduled 12-hour period. Upon completion of the injection period, the client traditionally had issues with LEL and VOC levels that required additional steaming and this would end up delaying manpower entry an additional 12-24 hours. Due to issues with prior applications, a new process was chosen; the FQE Chemicals method.
Prior to chemical application, it was confirmed that there was a lack of fluid communication at the bottom of the coker fractionator. This resulted in relocating the injection point and indicated that the fractionator was completely fouled at the bottom. It was confirmed that fouling was significantly higher than previous turnarounds.
To target the heavily coked-up bottoms, FQE Solvent-H was circulated at the bottom of the coker fractionator during the cool-down to target the heavy asphaltenes and sludges. This was followed by vapor phase injection of FQE LEL-Vapor, FQE H2S Scavenger, and FQE Pyrophoric products into the fractionator and remaining vessels.
Manpower designated for vessel entry was able to conduct maintenance operations without any time impacts to the schedule. Application of FQE Solvent-H successfully dissolved most of the heavy sludge at the bottom of the fractionator and significantly reduced the cost and time impact of mechanical services for removal of residual solids. All residual coke deposits were found in powered form and completely hydrocarbon free.