Challenge An underground gasoline pipeline had a leak that went undetected for an unknown duration that caused leaching into the ground. As a result of the volume of contaminated soil, strong gasoline odors were detected in the area. Those nuisance odors were affecting nearby neighborhoods causing community concern and complaints. Solution Envent scoped out the […]
Challenge A large gulf coast refinery was planning major equipment turnaround on multiple process units. While defining the scope of the work, they estimated that their Flare Header would quickly reach maximum capacity with vent gas from the process unit depressure and decontamination steps. The environmental department required the project to limit all emissions to […]
Challenge Envent Corporation was contracted to provide vapor control services for two temporary storage tanks located at a recovery and recycle area. The tanks contained rinse water from vacuum trucks and roll-off bins, which held low concentrations of VOCs. The variable nature of the vapors presented a challenge—both vapor flow rates and VOC concentrations fluctuated […]
Challenge A major oil and gas refinery in Louisiana was fast approaching on a major turnaround where the coker flare and adjacent unit would need to be taken down for maintenance. The adjacent unit was home to the flare scrubber where all daily vents from multiple units, such as the Coker, Diesel Hydrotreater, Sulfur Plant, […]
Challenge A refinery sulfur recovery loading rack was giving off foul/hazardous odors to truck drivers and personnel located in immediate surrounding area of sulfur recovery unit (SRU) during truck loading events. Truck drivers inside the refinery were required to dawn SCBA’s and load trucks with truck dome hatches open. They had to visually […]
Challenge A client asked Envent to help them to do the vapor control on the fuel gas recovery line at their refinery during their hydrogen plant turnaround event. As the hydrogen plant was being taken offline, the refinery fuel gas consumption would decrease, causing an excess of fuel gas. The excess capacity of the […]
Challenge A customer in the Gulf Coast engaged Envent with the need to depressure and clear a pipeline running from its refinery to 3.5 miles South of refinery for an emergency repair and inspection. The customer also brought up the need to a depressurization and de-inventory for an LPG Bullet tank during the same time […]
Challenge A chemical manufacturing facility in the Southeastern US had a large underground cleanup of toxic chemicals that had been spreading underground for many years. They had a design for the tent enclosure that the heavy equipment would be working in but needed a vapor recovery system to make sure none of the hazardous vapors […]
Challenge Envent provided vapor control on 5 temporary frac tanks during a tank cleaning. The source tank was emptied of a slop oil mixture. The product was going to be separated by a centrifuge into water, oil, and solid components. The temporary tanks in use accepted water/oil outputs and contained a heavy oil/sludge input […]
Challenge A customer tasked Envent to help evacuate an Ammonia tank skid and the surrounding piping so that multiple valves in the system could be replaced safely. Envent would have to provide a solution to handle liquid ammonia, associated temperature issues, and chemical hazards. Solution Envent provided the customer with a High Pressure Regulator, a […]
Envent’s depressure solution allowed for the customer to successfully continue operations without having to delay any standard procedures. In addition, the customer was able to start maintenance work on both LNG tanks immediately after this process was completed. Both of these achievements allowed the customer to save a valuable amount of time and money.
Envent developed a three phase vapor odor control solution for a Pacific Northwest customer utilizing a recirculating scrubber (for H2S removal) and a high flow thermal oxidizer to safely eliminate nuisance odors to the surrounding community as well as maintain 100% compliance and zero fines.
