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Emission Control System
713-621-3132
Houston, Texas, USA
888-621-3132


Mobile vapor condenser service


Contact PURGIT


'Closed Loop' Vapor Control


Flare service


More PURGIT services


Ammonia vapor control


Vapor displacement system


Job case histories


Nitrogen - Anywhere you want it


The Shipyard page and files


Great links!

Portable vaporizer  *

Resume for Hank Hilliard*

Flare burning butane hotflare01.gif
PURGIT flare model 4A

Zero VOC emissions    Zero NOx emissions   Zero CO emissions

Vapor Control Equipment for Tank Degassing

Controlling emissions from barges, rail cars, storage tanks since 1993.
Degas 130' (40m) diameter floating roof tanks in 1/2 day!
HEC vapor condenser

New information: In only 16 months through June 2008 we condensed and recovered over 80 tons (74,800 kg) of VOC. That is 80 tons less air pollution in the air around the Houston Ship Channel and places we work.

That means that PURGIT degassed tanks using our proprietary system to condense the vapors rather than burning them in a combustor. Condensing is a better method of vapor control because it cleans the tank vapors as it recovers the VOC back to liquid. It can handle concentrated vapors at high flow rates, something most mini combustors cannot match. Our 650 scfm (1,100 m3hr) condenser performs at 650 scfm from the first minute. Therefore rich vapors in tanks are removed faster, perhaps 10 times faster than mini combustors or IC engines. Our condensers produce zero NOx or other combustion by-products because PURGIT condensers do not burn or combust and they do not have exhaust stacks. That means no process emissions
and the recovered condensate can be recycled! If you think is it hard to imagine, click here and watch the video.

PURGIT uses multiple condensers to refrigerate the tank vapors, condensing them to liquid, which can be recycled. Non condensable gases like nitrogen are returned to the storage tank. The condensers are swapped when the pressure differential increases. This system handles many chlorinated solvents, gasoline and other chemicals. Advantages: Fast, no unprotected source of ignition, high efficiency vapor control, recovery instead of destruction. Patented.

If you want to reduce VOC emissions, claim VOC offsets, claim NOx credits
or just speed up tank cleaning, we may be able to help. PURGIT does vapor control service work with the condenser system and we perform vapor control and degassing with our mobile equipment on marine vessels and shore tanks. Call PURGIT - 713-621-3132.

Discussion of mobile equipment used for tank vapor control by Hank Hilliard, Hilliard Emission Controls

Collection of Emissions from Vessel Cleaning Operations - an article by Gary Lawrence, Aura Engineering, co-inventor of the PURGIT vapor displacement system.


PURGIT is a registered trademark owned by:
Hilliard Emission Controls, Inc.
Office telephone: 713-621-3132 or Toll free: 888-621-3132  Fax 713-621-3112
3100 Edloe Street, Suite 350 / Houston, Texas 77027
hank.hilliard@purgit.com