Hydrotreater Unit Degassing Side by Side Performance Evaluation

Results Achieved

Benzene levels tested after the degassing process = 0.4 ppm

Steam time reduced by 10 hours vs. the competitor’s product

Chemical profiles


Rapid absorption of vapor-state hydrocarbons in an innovative encapsulant for effective decontamination and degassing of hydrocarbon processing equipment.

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A Western Alberta Canadian Oil Sands Refinery had used a competitive product to degas various process equipment. Remaining benzene vapors in this hydrotreater after a degassing treatment with this product was a problem.


The targeted level of tested benzene to achieve in the degassing process was less than 10 ppm benzene. During the shutdown, the plant planned on degassing this hydrotreater, but decided to try and steam out the surge drum on the hydrotreater unit using FQE™ LEL-V while steaming out the remainder of the hydrotreater plant with the previously used competitor’s chemistry. The surge drum was picked to test FQE LEL-V degassing chemistry because this was felt as the source of the worst benzene contamination.


Results: The steam process time was 8 hours with FQE LEL-V compared to 18 hours with the competitor’s products.


Benzene levels tested after the degassing processes:

FQE LEL-V Chemistry = 0.4 ppm
Competitor’s surfactant enzyme based product = 25.0 ppm
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