Hilliard Emission Controls, Inc. 3100 Edloe Street Suite 350 Houston, TX 77027 888-621-3132

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OK, if you are reading this, then you are thinking ZERO? That must be impossible, so exactly how does this outfit justify that statement?

Here's how: PURGIT condensers do not make NOx, CO, CO2 or any other greenhouse gas. Only combustion systems do that. Our condensers do not burn the tank vapors and do not have exhaust stacks, so they do not make combustion gases like the enclosed flares or IC engines. Yes, we do have a small diesel engine that drives a blower which pulls the tank vapors out of the tank and pushes them through the condensers.  This engine does make some NOx and CO like all diesels, but no more than a pickup truck. No tank vapors are burned. An electric motor could be substituted for the diesel engine if electricity is available. We use a diesel engine for mobility, and it burns bio-diesel. Therefore, you can see that the tank vapor - which is what we are counting - is not burned. There is zero process NOx, CO, CO2!

As for volatile organic compounds, PURGIT condensers do not have exhaust stacks because we have a 'closed loop' system. 'Closed loop' means we return the non-condensable gases to the storage tank. There is no unburned VOC being vented. Our piping system, including the condenser housings from front to back, are bubble tested to over 10 psi. No combustor can do that! The VOC gases that move through our piping are kept in the system until they are condensed to liquid. The liquid condensate that is produced is recovered in tanks, totes, etc. The tank vapors are circulated through the condensers and back to the tank until they meet the customer or regulatory specification. Yes, there is some very slight leakage through gas seals and gaskets, that sort of thing, but no giant exhaust stack with unburned VOC fumes spewing out all over the landscape. Therefore, considering that all gas handling devices have gaskets and seals, we claim relative zero. No exhaust stacks, zero VOC.

Interesting side note: PURGIT condensers sometimes return more energy in the form of liquid condensate than we use to do the condensing. No combustor system can say that. The condensate can be recycled.