A sour crude oil storage tank was cleaned using FQE® Solvent-H and FQE LEL-Vapor resulting in H2S reductions from over 100 ppm to non-detectable levels
H2S levels reduced from over 100 ppm to non-detectable
No manhours required
inside the vessel
Award-winning asphaltene dispersant and anti-foulant
Rapid absorption and encapsulation of vapor-state hydrocarbons
|Tank Size||190 ft. (58 m) diameter|
|Tank Design||External floating roof|
|Service||Crude Oil Sour|
|Sludge Volume||7,480 barrels (1,189 m3)|
|% Oil Recovered||96.5%|
|Time Required||3 weeks|
The detectable hydrogen sulfide levels were over 100 ppm prior to the introduction of the chemicals and were reduced to non-detectable levels upon completion. The project was performed on the exterior of the vessel by introducing the selected chemicals through a proprietary nozzle and pumping system designed to insure the bottoms agitation. Nozzles were then installed on the external floating roof and through the tank side manways, therefore no manhours were required inside the vessel.
The recovered oil was then processed to the plant coker unit, and the wastewater from the cleaning process was approved for disposal on-site at the wastewater treatment plant. The tank was approved by maintenance staff for a change of service.