Challenge
A California oil company needed a trusted vapor control provider that could meet strict safety standards, comply with rigorous air district permitting, and deploy reliable mobile degassing equipment. With projects located throughout South Coast AQMD and Central California—some of the most strictly regulated air quality regions in the world—the client required a partner capable of delivering a cost-effective, fail-safe vapor control solution for multiple remote tank degassing operations.
Envent, known for its industrial degassing, pipeline vapor control, and refinery vapor control services, was selected due to its unmatched safety record and the largest fleet of mobile thermal oxidizers in the U.S.
Solution
Envent mobilized two Envent Mobile Thermal Oxidizer Systems (EMTOS) from its fleet of 14 uniquely sized units. This allowed for flexibility throughout the project:
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A smaller mobile thermal oxidizer was deployed for continuous low-flow vapor control, minimizing pilot gas consumption
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A high-capacity unit was introduced when rapid tank degassing was required to move through the explosive range and achieve <10% LEL, as required by tank vapor management plans
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Both systems were configured for 100% redundancy, ensuring operational reliability throughout the job
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The flexibility to scale up or down based on vapor flow made this a highly economical vapor control solution
Benefit
By leveraging Envent’s engineered vapor control systems, the client minimized both cost and environmental risk. The smaller unit reduced pilot gas demand, while the larger EMTOS system allowed for efficient, high-flow vapor destruction during critical degas operations—ensuring compliance with EPA BACT requirements (>1400 °F combustion) and South Coast AQMD emission limits.
With mobile vapor control, thermal oxidizers, and complete turnaround vapor control solutions, Envent delivered the flexibility, compliance, and reliability the client required. The project demonstrated why only Envent has the fleet, expertise, and permitting knowledge to support complex, multi-phase tank degassing for refineries and terminals—especially in California’s most challenging regulatory environments.
