Challenge A Gulf Coast Refinery scheduled turnaround required taking the Mid Crude and West LEU process units out of service. To achieve this, the units needed to be depressurized and decontaminated of LEL and H2S. Solution Envent supplied two temporary degassing and vapor control systems to safely and efficiently combust VOCs from the two […]
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 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 A customer needed to remove 50 feet of 60-inch ducting containing hazardous nitrogen oxide (NOx) vapors. The facility, located next to a major highway and bridge in the California Bay Area, posed a high-risk scenario due to its proximity to a heavily populated area. Without proper vapor control, the NOx could have created a […]
Challenge Due to the COVID-19 pandemic the Biomedical Advanced Research and Development Authority (BARDA) and contract development and manufacturing organization (CDMO) network were created. Our customer was approved to join and manufacture COVID vaccines and needed to start production quickly. They requested an automated system to control vapors from their process units. Solution Envent’s engineers […]
Emergency Response. To control refinery vapor stream containing 10,000 ppmv of H2S in a VOC stream from a vessel pressured to 300 PSIG. The project was completed in 24 hours hours without incident.
Challenge A major Houston refinery engaged Envent Corporation in a competitive bidding process alongside several thermal oxidizer companies to support the cleaning and degassing of an underground API separator. This rectangular tank with an external-floating roof had accumulated years of wastewater hydrocarbons from multiple refinery operations—resulting in a potentially hazardous, unidentified mix of vapors and […]
Envent provided equipment over a three-year span ranging from small carbon vessels all the way up to our 42 MMBTU/H EMECS42 Thermal Oxidizer along with three other Smaller thermal oxidizers.
Challenge A west coast pipeline company requested Envent to provide vapor control during a pipeline purging process. Normally large vessels with adsorption media were proposed for this kind of job. However, due to the high pressure operation, either expensive high pressure vessels should be used or some devices should be installed to protect the regular […]
Challenge On Christmas Eve 2019 the citizens of a Northern California city woke up to a terrible rotten egg smell. The General Manager of the water treatment facility made a call to Envent around 2:30 p.m. on December 24th, 2019. He said he had a terrible rotten egg smell coming out of one of the […]
Challenge A mid-west facility was under a time and regulatory constraint to reduce H2S emissions coming from a cold feed storage tank. There were many requirements that had to be met to sufficiently perform this job including having a high flow at the system. Envent had to figure out a way to knock out aerosol and oily […]
