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 […]
Project Summary: Vapor Processing System for Refinery Emissions Envent Corporation recently completed a comprehensive vapor processing project in Alberta, Canada, leveraging its team of specialists and engineering staff. The project managed and processed vapors containing Volatile Organic Compounds (VOCs), hydrocarbons, and chlorinated hydrocarbons from a refinery, ensuring compliance with environmental regulations while prioritizing safety and […]
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 Envent’s North-East Natural Gas Transmission customer required maintenance of a 52 inch pipeline due to a leak. The problem had to be resolved immediately. The problem could have resulted in adverse environmental impacts and financial loss if it was not addressed immediately Solution Envent responded within 24 hours to the jobsite with our […]
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. […]
Challenge A gulf coast refinery was recently the target of a large hurricane: a storm that caused them significant damages. It was at this point, the refinery decided to change their model from a refinery into a storage terminal facility. During this process, the facility found value in selling their current product via marine vessels. […]
Challenge A customer of ours has two cargo ships that constantly transfer cargo up and down the west coast. These ships are always sailing back or forth with commerce and are on extremely tight schedules. Envent Corporation was challenged with assisting in the commissioning a new LNG fuel system on one of these cargo ships, […]
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 […]
Challenge A customer in the Midwest needed to reduce noise coming from a natural gas pipeline blowdown. Pipeline blowdown operations can be very loud have the potential to disrupt the immediate area. The gaseous contents of the pipeline are at high pressure and when that pressure is under controlled release, creates an unpleasant rushing sound. ENVENT was called upon to assist […]
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 Houston refinery reaches out to Envent to submit a competitive proposal amongst many other thermal oxidizing companies to assist in the cleaning and degassing an API Seperator. This tank is an underground-rectangular tank with an extrernal-floating roof. This tank has taken years of waste-water products from all over the refinery, which creates a […]
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 Envent Corporation was called upon to treat approximately 619,758 gallons of hydro-test water from two newly constructed pipelines on the west coast. The newly constructed pipelines required hydro-static testing after they were installed to ensure there are no leaks and the pipelines are ready for full scale operation. The challenge was what to do […]
Challenge During a turnaround for an Olefins Unit, a customer tasked Envent with providing a vapor control system to process stray hydrocarbon vapors while their normal vapor recovery system was down for maintenance. The customer’s unit superheaters were to be shut down for three months, and without a proper solution in place, the customer would […]
Challenge Due to the recent pandemic striking the world, a gulf coast refinery adjusted their refining process to allow them to continue production. They found a surplus of C4’s (n-butane, isobutane, etc) that typically sell with ease. During this process, multiple variations of C4’s are made from a single process. 1-3 Butadiene demand remained high, and […]
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 A Gulf Coast Refinery was faced with an emergency shutdown on one of their reactors, the catalyst was spent and needed immediate replacement, and it needed to be completed in time for their Alkylation unit was to be brought back online. The reactor needed to be cleaned in three separate phases in order to […]
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 We have a long term project located in Southern California where we are providing vapor control for tanker trucks being loaded with crude. We decided to use a TO as the carbon spend rate will be very high. The unit is always on hot standby. The challenge of this project comes from the inconsistency […]
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 […]
Challenge A local refinery had a large waste water tank that needed to be deinventoried and cleaned in order to change the service type. The water would either need to be treated on site or hauled off. Standard onsite treatment would take roughly 2 years at the rate they could discharge to the onsite system […]
Challenge A refinery in Toledo, Ohio requested Envent to bring their propane storage tanks to an LEL level acceptable for personnel to make entry. Envent would connect their EMECS units to their connection point, and process vapors until the customer samples, and deems degassed. Solution This job proved to have many uncertainties not typically noticed […]
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 general contractor was selected by a local utility company to oversee the relocation of an electrical substation. This process required the construction of several large power lines and installation of numerous underground vaults. The project was located 0.25 miles from the coast, so the water table was very shallow near the construction site. […]
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 was contracted to provide vapor control on two temporary storage tanks placed at a recovery and recycle area. The system abated vapors from temporary tanks that held rinse water. The water contained low levels of VOC founded in the vac truck rinse water and the roll-off bin rinse water. This project required a […]
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 Contaminated water at a Northern California Refinery where groundwater must be extracted before it enters the bay. There is a series of groundwater wells and pumps that maintain hydraulic control of the area’s sub surface water system and prevent the contaminated water from reaching the Bay. The source of contamination was a Methyl tert-butyl […]
Challenge A customer was in need of a soil vapor extraction system for a project located within 2,000′ of a public school for a three month pilot project duration. The system was needed to scrub the following VOCs: BTEX, TCE and PCE. Upon successful completion of the pilot project, our customer could then determine […]
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.
A large North East Oil and Gas customer needed to perform much-needed maintenance of degassing and tank cleaning on one of their Crude Oil tanks. High odor concern, public safety, scrutinized media attention required a solution by Envent Corporation that was fast, odor free, safe to neighbors, and in compliance with local regulations.
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.
Challenge A customer in the Port of Brownsville; the tank was a mid-sized High RVP Gasoline tank with a pipeline feeding into it. The tank was due to come out of service for an API 653 inspection. The customer as well as cleaning company had assumed the tank to be product free, but upon closer […]
Challenge A large Oil and Gas customer needed to perform maintenance on 3 tanks in one of their West Texas terminals. The majority of the maintenance was focused on removing and replacing the shell-side mixers. The problem was that those same tanks were critical to their day to day operations, meaning that the turnaround time […]
Challenge Envent was challenged with depressurizing a propane line, within the confines of a gulf coast refinery. The line measured over 2 miles, was above 200 psig, and was full of liquid propane gas. Envent needed to ensure the pipeline was cleared and ready for Hotwork within a 2 day time frame due to inclement […]
Challenge A California refinery had a need to load gasoline, ethanol, and other high vapor pressure materials (classified as MVR products) onto barges. MVR products are required to have vapor control on them during transfer onto the vessel. The loading terminal is not equipped with any form of vapor recovery device on the dock. Without […]
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 […]
West Coast customer challenged Envent to create an immediate temporary solution which would enable them to continue production during the 1.5 month lead time it would take to manufacture, transport, and install their new system.
An 80,000 bbl. /day crude distillation unit underwent a month long planned shutdown in order to perform maintenance on their exchangers, and pressure vessels.
A West Coast oil company needed to purge 20 miles of pipeline with crude and hydrogen sulfide vapors. The oil company needed a solution to vapor degas this large volume of crude and H2S vapor from this pipeline to allow pipeline repairs.
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…
A Midwest refinery contracted Envent to provide degassing and vapor control services. The refinery planned a major turnaround and had multiple critical-path process units that needed industrial degassing and industrial vapor control services for safe entry into process vessels.
We believe Safety is No Accident.
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 […]
A facility on the Gulf Coast had an out of service tank that once contained Pyrolysis Gasoline (Pygas), but had recently been used to store various waste streams and contaminated water.
A refinery conducted a turnaround on a Hydrocracker unit in the Deer Park area, and they required a complete turnaround solution. Having worked with Envent before, the customer knew that we could solve all of their needs.
A refinery customer planned a turnaround for their Fluidic Catalytic Cracking Unit and was in need of turnaround service support. Because Envent has demonstrated the ability to help our customers meet the new, stricter emission limits imposed by the new Petroleum Refinery Sector Risk & Technology Review (RSR) regulations, the refinery knew they were getting the best.
Port Arthur refinery customer planned a turnaround for their 4 Drum Delayed Coker Unit. Due to the stricter emission limits imposed by the new Petroleum Refinery Sector Risk & Technology Review (RSR) regulations, the refinery needed Envent’s help.
Deer Park refinery facility required a flareless turnaround due to the new Petroleum Refinery Sector Risk & Technology Review (RSR) regulations. In order to remain in compliance and shorten the duration of the decommissioning phase, Envent was called upon to depressure the unit.
An underground natural gas pipeline was discovered leaking in a residential area. Although the pipeline owner quickly fixed the leak, much of the soil had become saturated with odorized natural gas. In order to protect the nearby residences and shops, the company needed an engineered solution to degas the soil as quickly as possible.
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.
A California Oil Company needed a vapor control supplier that meets their safety requirements and provides reliable equipment. Envent designs, builds, maintains, and operates the largest fleet of mobile thermal oxidizers in the US.
A mid-west facility was under a time and regulatory constraint to reduce H2S emissions coming from a cold feed storage tank. Envent provided engineering, equipment, and specialized technicians to allow the facility to meet the deadline of lowering their H2S, which allowed them to continue operation.
In mid April 2016 a Northern California Refinery discovered a seal leak on a 145 ft. diameter x 75 ft. tall above ground external floating roof storage tank that was in Sour Naptha service. Due to the sour nature of the product in the tank, this seal leak presented substantial safety and environmental hazards to any personnel working at the refinery as well as to the surrounding community.
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.
A shipping company built a cargo container ship that is fueled by liquefied natural gas (LNG). Valve repairs needed to be completed on the fuel tanks aboard the ship. Envent was called on to handle the job.
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.
A refinery contracted Envent to use our EVAC 1000 unit to do temporary odor and vapor control for its sludge processing centrifuge operations. Envent was able to make the GAC last approximately 3 times longer savings the customer approximately $150,000.
Emergency Response Call-out to depressurize a 13 mile long section of 12 inch pipeline containing butadiene. Required to line depressurize from 250 PSIG to 0 PSIG. Envent engineered and was on-site within 2 hours, in the middle of the night.
A customer indicated a serious incident that had taken place in the facility a few weeks earlier while a degassing company was performing vapor control on a gasoline storage tank.
Leave tank cleaning to the experts. Leave tank degassing to Envent. Among several other vapor service lines, Envent degasses tanks. Being a tank degassing specialist, Envent does not dilute its attention to detail in an effort to capture more work scope and therefore more project revenue.
Envent brings experience to the project site. With experience comes the knowledge to ask the right questions.
A refinery company on the West Coast needed to de-inventory a tank of Arabian Crude with unexpectedly high hydrogen sulfide levels. After receiving multiple odor complaints from within the refinery and one odor complaint from the public, the client knew they needed to resolve the issue immediately. Due to Envent’s immediate mobilization for the project, the client saved at least $100,000.
A refinery wished for a bullet tank of Ammonia to be degassed. Due to limited space availability equipment that provided a small footprint was needed. The tank also needed to be degassed as quickly as possible so an inspection and repairs could be made. Envent was able to degas the bullet tank without any infraction of the degassing permits for the facility.
A sour water tank high in H2S needed vapor control provided during a turnaround while maintenance was done in the surrounding area. The H2S needed to be reduced to a safe level while the vapors were treated and vented to atmosphere.
Amajor refinery in California was to degas a tank filled with crude oil, and blanketed with nitrogen. A solution was needed in order to degas the tank, as well as control the vapors on the vacuum truck when filling. Envent was also able to save the customer thousands in potential fines, as well as avoiding a potential product release.
During the re-commissioning of the pipeline a leak was detected. The leak was isolated between two stations roughly 16 miles of pipeline. In total 12,000 barrels of propane needed to be combusted as quickly as possible.
A tank farm customer requested Envent degas a 123 foot diameter naphtha tank. The tank farm was able to continue operations around the tank while degassing was in progress due to the small footprint of the EICE.
A refinery contacted Envent to have a 150,000 barrel internal floating roof degassed for inspection. The tank contained gasoline, which has a high BTU/cubic foot, so a correctly sized thermal oxidizer is critical.
A nationwide petroleum company had an API inspection deadline on a 110’ diameter External Floating Roof Tank containing sour crude product. There was an acute hazard in the tank for pyrophoric materials, materials which ignite in the presence of oxygen without an ignition source. The petroleum company understood that they would need an all-star team to degas, clean, and inspect this tank.
A chemical plant located in Louisiana had a boiler break down on one of their air stripper systems. Due to the highly specific requirements of the boiler, renting a replacement was a highly expensive, and time consuming process. Through successful planning and execution, Envent saved the customer millions in fines, and rental equipment.
A terminal company in Texas City utilized a flare to control vapors on their storage tanks. When the flare failed, Envent was called to control excess vapors. Envent responded to this emergency, and was able to arrive onsite within four hours.
A tank farm had collected over 600,000 gallons of storm water runoff. The storm water needed to be treated for total suspended solids, oil and grease, benzene, toluene, ethylene and xylene. The treated water would be discharged directly into Fort Worth’s sewer system.
A general contractor was tasked with making major renovations to a utility company’s electrical transmission infrastructure. Construction dewatering was a major concern for the general contractor because the excavations were as close as 500’ from the ocean.
A Southern California refinery was operating a thermal oxidizer in the South Coast Air Quality Management District (SCAQMD) that registered a flow rate of 267 SCFM, exceeding the maximum permissible. Envent diagnosed the problem, procuring a new sensor and recalibrating the refinery’s equipment.
A national pipeline logistics company with several pipelines crossing Southern California regularly needs to perform maintenance and repairs. Project scopes range from one vacuum truck removing a few barrels of product from a single valve box over a few hours to full blown, multi-line segment drain-downs, nitrogen sweeps, integrity tests, and pipeline reinstatement. Envent’s temporary tank systems can be set up adjacent to residential areas without any concern for odors leaving the facility.
During a turnaround, an industrial gas company required vapor control on a Propylene tank and vacuum trucks. Once emptied, the tank was to be degassed and placed out of service. All Envent personnel are trained using state of the art VOC detection methods, and equipment to guarantee best results.
A Southern California Refinery needed to conduct maintenance activities on a number of connected process units. The goal was to complete several hot taps on each unit and cleaning to remove years of product buildup. Envent worked with a cleaning contractor to provide a turnkey solution for this large scale turnaround.
There were numerous odor and air quality complaints in the vicinity of the plant. We developed a scrubber and thermal oxidizer system to eliminate the odors and the hazardous releases.
A Westlake Louisiana refinery required vapor control on their tank while a robotic crawler made entry into the tank. The company was trying to recover $10,000,000 worth of catalyst that had carried over from their Catalytic Cracking Unit. Envent was also requested to provide vacuum rated carbon containers.
A refinery with a sour water tank high in H2S needed vapor control provided during a turnaround while maintenance was done in the surrounding area. The H2S needed to be reduced to a safe level while the vapors were treated and vented to atmosphere. Successfully reduced the H2S emissions in the area so turnaround could continue.
A large Texas refinery was in need for a long term vapor control solution for their refinery. A system that was specifically engineered for the concentration of VOCs and SOx. Neutralized any harmful VOC’s to the environment in the most effective manner.
A large refinery in California needed vapor control on a propane recovery line. In order to stay within the permit, the refinery would have to degas the pipeline to accommodate the Bay Area AQMD limits. A quick and easy vapor control solution was needed. 600 pounds of VOC’s removed just under five hours.
A petrochemical company needed both vapor control, and degassing for a spherical 30,000 barrel Butadiene tank. Envent was able to quickly switch from a vapor control, to a degassing service with little to no downtime, and ahead of schedule.
An Oil and Gas terminal had mixed 350 BBL of product inside a pipeline. The company was going to push the mixed product to a LPG transport truck using a pig, and Envent was requested to control vapors on the truck to prevent it from overpressuring. Successfully purged the pipeline of the mixed product in 6 hours of operation.
A terminal located on the Northwest had to meet their deadline inspection on a large, 350,000 BBL Butane storage tank. They had a narrow window to complete the degas, turnaround work and return the tank back to service.
A 180,000 BBL Southern California refinery wastewater tank, frac tanks and centrifuge equipment needed vapor control and degassing during sludge removal. The two month long project needed redundancy and great attention to detail to abide by the permitting requirements. Maintained 24/7 operation while making the short generator service intervals.
A Houston ship channel refined product storage terminal requested our degassing expertise to engineer a solution for an unconventional sphere tank. Due to the unconventional design of the tank, previous attempts by competitors failed and the customers budget was blown. Other degassing contractors lack Envent’s engineering expertise and equipment.
The challenge was to handle the vapor control for 250 frac tanks and the blow downs from the towers, columns, and vapors from the vacuum trucks. Envent’s 24 hour manned operation ensured the tank was degassed correctly and safely.
A long-time customer has his project had been shut down when they witnessed flames leaping from the side manway of the tank – dragons. The benefit to the customer came in the form of Checks and Balances. When one company provides two completely different scopes of work, transparency to the customer can suffer.
A construction company in San Diego needed to bore a hole under railroad tracks for a utility company to run wire underground, 15 ft below grade. The site location was a marine terminal, so Envent was contracted to dewater the area for digging and to treat the subsequent contaminated water. Savings of $24,000 and the successful discharge of 250,000 gallons of clean water.
Project: Condensed Water Removal from Storage Tank. Location: Victoria, Texas. Product: Water contaminated with gasoline range organics. Project finished under the allotted time and achieved a non-detect concentration of VOC’s during the project.
Project: Tank Water Treatment and Discharging Onsite. Cost Savings: $250,000. Location: Bakersfield, California. Product: Hydrostatic test water with crude oil residual.
Project: Terminal station tank to be de-inventoried. Cost Savings: $450,000. Location: Louisiana Refinery. Product: Oil and sludge-laden water
Project: Pipeline Hydrotest. Cost Savings: $550,000. Location: Alaska. Product: Hydrotest water with sediment and residual oil.
A pipeline company required emergency treatment and discharge of contaminated water to the Los Angeles City Sanitation system during a construction project. The effluent pipeline water properties varied over time due to numerous drilling and grouting activities occurring upstream of the effluent.
Treat and discharge 3,000,000 gallons of water from a pipeline hydrotest on the North Slope of Alaska. Protected America’s last frontier while minimizing costs.
An Illinois refinery required a 169,000-barrel overflow tank to be degassed. Estimated to have saved $250,000 by contracting Envent.
Project: Turnaround Support Services. Cost Savings: $150,000. Location: Gulf Coast Refinery.
A refinery requested to do on-site wastewater treatment for a 2,000,000 gallon tank.. Savings of $170,000 was estimated when compared to the transportation and off-site treatment costs.
A chemical plant in Texas required a 24,000 barrel tank to be degassed during, and following a tank cleaning. Degassing Tanks under a Nitrogen Blanket Not a Problem for Envent.
A Houston-based chemical company had consistent issues with high amounts of suspended solids in their storm water. Removed 90% of the solids which enabled the treatment facility to perform more efficiently.
During a pipeline re-commissioning a leak was detected requiring 12,000 barrels of propane needing to be combusted. By using the vapors in two ways, the time to depressure the pipeline was completed 4 times as fast.
A refinery’s primary flare for the onsite tank farm was being taken offline for emergency maintenance. Envent provided a thermal oxidizer capable of destroying vapors during this maintenance period. Client continued tank farm operations during the turnaround without shutting down.
An energy and industrial services company needed to degas 10 compartments barge in California. Quick and effectively was required. Envent degassed each compartment in 2 hours, with a 99.9% destruction efficiency.
A tank farm customer requested Envent be onsite for an unscheduled tank refill within 4 hours. Envent was able to respond to the emergency quickly and safely, which saved the customer thousands of dollars in down time.
Project: Marine Loading Vapor Control. Cost Savings: $147,000. Location: West Coast Terminal. Product: High Octane Naphtha. Saved client approximately $147,000 by contracting Envent as the mobile vapor control provider.
Project: Sulfur Dioxide Vapor Scrubber. Location: Beaumont, Texas. Product: Sulfuric Acid. Result: 100% vapor abatement while allowing operations to commence undisturbed.
A customer at a Super Fund Site in Central California needed support to dewater a pit dug in a neighborhood in order to remove contaminated soil. Cost of treating and discharging the water was at a fraction of the cost.
A pipeline company in Northern California needed to blow down their natural gas pipeline for repairs and inspection. Four volume line sweeps were performed to leave the piping free of residual gas.
