Challenge In anticipation of an increase in benzene emissions regulation, a Canadian facility wanted to proactively reduce their outputs for benzene loading operations. Normally, this facility would load both barges and railcars with liquid benzene for shipment to their customers. They would need to implement a vapor control system that could seamlessly integrate with […]
Challenge A customer facility had two large runoff tanks filled with several million gallons of high pH water associated with groundwater remediation. The customer wanted to drain both vessels to make room for additional wastewater, but each tank’s contents would need to be treated to a neutral pH prior to discharge. Additionally, sulfur precipitates in […]
Challenge A Canada Refinery required the stripping and cleaning of a butane storage vessel as part of a facility transition to renewable diesel service. Envent was assigned the responsibility of degassing the tank and delivering continuous vapor control to minimize tank atmosphere to non-explosive levels. Furthermore, the tank needed to be inerted to prevent oxygen […]
Challenge: A refinery faced significant challenges with high benzene emissions from its wastewater, exceeding the Benzene Waste Operations NESHAP (BWON) requirements. Crude desalter process water, typically directed to the refinery’s Wastewater Treatment Unit (WWTU), contained high levels of dissolved benzene and phenols. These contaminants were not fully removed during primary treatment, leading to their release […]
Challenge: A customer facility held a turnaround in which their Selective Hydrocracking Unit would be taken out of service for scheduled maintenance. The unit would be purged of residual hydrocarbons through a hot hydrogen stripping process, but due to emissions limitations at the facility flare, the hydrogen would need an alternative route to be vented. […]
Challenge A customer tasked Envent to create a temporary system allowing for the degassing of an LNG-powered freight vessel while it was docked at port in order to perform critical maintenance on the vessel. The solution would allow the customer to continue standard operations without delay, remove Natural Gas Vapors from within the fuel […]
Challenge A West Coast natural gas transmission and distribution company required inspection & maintenance on a segment of methane pipeline. That section of pipe would need to be drepressured/ evacuated and deinventoried prior to performing the required maintenance. The client did not want to release the natural gas into the atmosphere (~1 Million lbs CO2e), […]
Challenge An Envent customer needed to perform maintenance on their distillation unit, SATS unit, and flare. For this project, the customer rented a temporary flare to combust VOCs while their main flare unit was serviced. The customer came to Envent requesting sour gas scrubbing. H2S levels up to 15,000 ppm were to be expected in […]
Challenge The customer needed to clear their hydrotreater of volatile vapors and product in order to allow manned entry for maintenance activities. During this process, there would be limited availability to use the flare or FGRU to purge vapors from the unit. Additionally, there were high concentrations of hydrogen gas and H2S that needed to […]
Challenge The challenge of this project is to provide supplemental soil vapor extraction (SVE) and vapor control to the plants existing vapor recovery system. Additional soil vapor extraction wells were installed on the periphery of the plant due to the expansion of the landfill. The plants SVE blowers are unable to provide sufficient vacuum and […]
Challenge There was a large plume of MTBE below grade near a waterway strait. Envent had been collecting ground water and treating it from this site for approximately 10 years but due to multiple years of drought ground water was no longer mobilizing large concentrations of MTBE for removal. Solution Envent was asked to provide […]
Challenge A customer removed 50′ of 60″ ducting which contained NOx. The facility is located next to a major highway and bridge in the California Bay Area. Envent provided vapor control on the NOx so it did not produce a toxic orange cloud over the heavily populated area while the customer was removing the ducting. […]
