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Valve

Failing RTO Flies through EPA Test. Agent says, "Whatever you're doing, keep it up!"

RTO Brought Back from the Brink of Failure: Teaching Old Valves some New Tricks

What do 96.1%, 95.7%, 91.15% have in common? They are the average DRE (Destruction Rate Efficiency) of a Durr two-tower RTO over the past three EPA compliance tests dating back to 2010. When RHZ Environmental reviewed the data and inspected valves we knew the unit was in serious trouble. The valves were warped. Proper seating was impossible. RHZ staff discussed the issues and offered the client two options:

The Traditional Approach: Replace the warped valves. This is a tried and true approach. It would correct the problem but at a substantial cost.

The Innovative: Let RHZ Environmental create a customized solution that will improve their current valves' performance at a fraction of the costs.

The client weighed their options and put their trust into RHZ's hands. They hoped we could provide a cost-effective solution to their all-too-common problem.

Trio of Good News: Two Engineering Tests and a rebuild

This chamber was rebuilt and relinedTwo successful Engineering Tests and a Beautiful Relining: The first site had failed its previous EPA test, with an outlet concentration exceeding 6,000PPM. RHZ helped with engineering and controls modifications. The subsequent test found the average outlet VOC concentration dropped from over 6,000PPM to just over 1PPM. We also lowered the combustion chamber temperature by over 50F, which will save them over $7,000/year.  

RHZ also wrote a specialized routine which averaged the chamber temperature for each test.  Due to RHZ's skill at PID tuning, the average chamber temperature was within 0.3F of the PID's set point temperature.  The 2nd site had its engineering test yesterday. We prepped this 20 year old unit for the test a few weeks ago. It achieved a 99.97% destruction rate efficiency. This confirms RHZ's ability to achieve exceptional test results from equipment that has been in the field for decades.  The third site had falling insulation. The walls of the combustion chamber had been ravaged by years of neglect, and an entire section had to be rebuilt. This delayed our total scope of work by only Two Days.