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 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 customer was facing EPA fines in the tens of thousands of dollars per day for the release of H2S and VOC’s to atmosphere from a tank not permitted to contain H2S-laden material. The customer reached out to Envent to solve the problem within a short deadline of three months. Solution Envent was […]
A Mid-West refinery was preparing for an internal pipeline maintenance project and was exploring options for how to take the vent and a refined product pipeline out of service to sustain refinery production and continue to ship refined project to market…
Challenge A refinery in Southern California experienced severe plugging in a section of piping downstream of their coker unit. In order to eliminate the restriction, the refinery needed to perform a line break and attempt to clear the line. The column attached to the line contained high concentrations (2500 ppm) of ammonia vapors and the […]
Port Arthur refinery customer had to complete a flareless turnaround involving their Hydrocracker Unit. Envent mobilized three EMECS-42 thermal oxidizers, two ESCRUB-6000 recirculating scrubbers, and all associated safety equipment to complete the decommissioning.
Reducing fugitive emissions from the top lid of an old oil recovery unit DAF Cell. Leak Detection And Repair (LDAR) is being taken very seriously in more and more areas of the country. This facility’s oil recovery cells were becoming aged and so the facility wanted to take proactive measures to ensure that no fugitive emissions would escape through the lids.
VapoScrub™H2S yielded the best and most economical option giving a total cost saving of $200,000 over the duration of the project.
A petroleum manufacturer contracted Envent to do vapor control on a series of frac tanks being filled with shale oil from a pipeline. Envent provided vapor control systems for each set of 15 frac tanks.
Port Arthur refinery needed to abate vapors following a super sucker vacuum truck (3000 CFM) containing high concentrations of H2S and residual VOCs. The cost savings versus carbon was estimated to be $100,000.
Houston oil pipeline company was clearing 25 miles of 16 in pipe into a crude tank. The oil had an API of 12˚. The company needed the line cleared soon as possible. Envent completed the job with an efficiency of greater than 98% and an estimated cost savings over carbon of $30,000.
