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 […]
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- /Vapor Scrubbing
Envent Finds Themselves Inside Another Houston Refinery
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 provides turnaround support for emergency shutdown
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 […]
Major Turnaround Success for a Large Gulf Coast Refinery
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 […]
Envent helps Louisiana Refinery stay Environmentally Compliant
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, […]
Vapor Control of Fuel Gas Recovery Line Provides Client Quickest Turnaround Ever
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 […]
Depressurization of a Panhandle LPG Pipeline
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 […]
Golden Triangle Refinery Turnaround
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.
Mid-West, USCG Certified Marine Vapor Recovery System
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…
Midwest Refinery Turnaround Services
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.
Deer Park Refinery, Complete Turnaround Solution
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.
Houston Area Refinery, FCCU Turnaround Service
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.