Challenge

A West Coast pipeline company contacted Envent Corporation to provide vapor control services during a high-pressure pipeline purging operation. Traditionally, large carbon adsorption vessels are proposed for this type of project. However, due to the elevated operating pressure, using standard atmospheric vessels would have required costly high-pressure-rated alternatives or protective systems to prevent failure under pressure.

Solution

Envent’s engineering team evaluated several approaches during the planning phase and ultimately proposed a customized vapor control solution leveraging a high-flow carbon scrubber system integrated with high-pressure components.

Based on an absorption model developed in-house, our engineers calculated vapor load and system sizing. The final system included:

• A trailer-mounted BD 6000 vapor scrubber, ideal for mobile vapor scrubbing and pipeline degassing

• A high-pressure regulator to reduce inlet vapor pressure for safe entry into the scrubber

• A high-pressure knockout pot to remove entrained liquid during the purging process

This configuration enabled effective control of pipeline vapor emissions while maintaining equipment safety and integrity.

Benefit

By utilizing Envent’s engineered vapor control solution, the client completed their pipeline evacuation safely, efficiently, and at a significantly lower cost than traditional high-pressure vessels. This project reinforced Envent’s role as a trusted provider of custom pipeline degassing services, pressure vessel vapor control, and industrial vapor scrubber systems—ensuring safety, compliance, and cost-efficiency in complex operations.