VapoScrub™ and VaporBite™ Technology in our Escrub™ and EVAC units deliver high-efficiency vapor control and odor mitigation. These systems complement our carbon and combustion services, providing a specialized solution when EMTOS™ or thermal oxidation is not the primary application. Our team can deploy these scrubbers upstream or in conjunction with thermal oxidizers to ensure your vapor stream meets all regulatory requirements.
Our liquid scrubber chemistry is utilized across North America for:
Whatever your vapor recovery needs, our engineering team will design the solution. Additionally, our team will work with plant engineers to complete the HAZOP and MSS Review, as well as develop a compliance plan that provides a technical map for you or Envent Field Technicians to monitor and report emissions data.
We have a variety of proprietary chemical scrubbing solutions specifically designed to remove high concentrations of noxious odors and hazardous air pollutants (HAPs). Our chemical scrubbers, combined with our custom engineered solutions, have the capability to remove all hazardous H2S (Hydrogen Sulfide) and Mercaptans. This makes sure your vapor stream is vented safely within strict EPA and local air quality regulations.
Technical Product Data Sheets:
Our line of hydrocarbon scrubbing chemicals is non-hazardous, biodegradable, and highly effective for VOC abatement. They have been proven to work better and longer than typical sponges or alternative “snake oils.” This higher efficiency equates to safer venting, reduced downtime during refinery turnarounds, and major cost savings for our customers.
Technical Product Data Sheets:
The Problem: A Texas plant needed to degas a storage tank containing anhydrous ammonia (NH3). Ammonia is toxic, corrosive, and produces a sharp odor that triggers safety alarms. Because standard carbon filters are ineffective for ammonia, the site required a specialized neutralization method.
What We Did: Envent engineered a multi-stage liquid scrubbing system using an acidic solution to convert ammonia gas into a stable liquid salt. Our field technicians managed a closed-loop line from the tank to the scrubbers, monitoring pH and vapor levels 24/7 to keep output well below safety limits.
The Result: The tank was cleared for safe entry on schedule with 100% odor control. By utilizing chemistry instead of thermal oxidation-which can produce (NO2) when burning ammonia-Envent provided a cost-effective solution that maintained full regulatory compliance.
Explore how Envent’s vapor scrubbing equipment and technicians have successfully managed complex emissions across North America
VapoScrub™ refers to our proprietary line of scrubbing chemicals designed to neutralize contaminants through chemical reactions rather than simple physical adsorption. When paired with our VaporBite™ contact technology, these chemicals break down VOCs and H2S into stable, non-hazardous liquid forms.
For applications requiring chemical oxidation (such as VapoScrub™ NaOH), maintaining the correct pH is critical for efficiency. Envent field technicians provide 24/7 monitoring of the scrubbing liquor. We utilize real-time pH adjustment to ensure the chemistry remains at peak neutralization capacity throughout the entire degassing or clearing operation.
For targeted sulfur removal, we typically deploy VapoScrub H2S5 or NaOH. These are specifically engineered to eliminate the “rotten egg” odors of H2S and the pungent scent of mercaptans, ensuring zero public odor complaints.
Absolutely. Our mobile Escrub™ units are commonly deployed upstream of, or in conjunction with, EMTOS thermal oxidizers during tank degassing and vessel cleaning operations. The scrubber system conditions the vapor stream, such as removing hydrogen sulfide or other acid gases, before final vapor destruction. This integrated configuration supports efficient vapor management, facilitates safe-entry preparation for maintenance crews, and maintains compliance with applicable air permit requirements.
Ready to improve your emissions control strategy with a lower-cost chemical solution? Contact Envent today for a technical review of your vapor stream
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