NH3/LPG Vaporizing & Purging

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PURGIT hot water vaporizer

PURGIT vaporizer for anhydrous ammonia, carbon dioxide and other cryogenic liquids including liquid nitrogen, butane, propane and ethylene. We have 2 hot water vaporizers each with these capacities: 3,150#/hr of CO2, 1,180/hr NH3 or 46,100 cuft/hr N2. The heater is propane fired. We also have a steam vaporizer that is compatible with classified areas. And we have 2 aluminum fin-fan vaporizers that can be used in classified areas.

Vaporizer uses:

  1. Charging up /conditioning anhydrous ammonia storage tanks.
  2. Inerting tanks with gases like N2, CO2, etc

Tanks are inerted (filled with inert gas) to remove or reduce oxygen or another gas. Inert gas is very dry and therefore moisture is reduced when the tank gases are replaced. It is possible to make repairs to tanks that contain flammable gases by inerting the tanks so as to reduce the oxygen level to a point that the mixture will not burn (or explode). The reason to use an inert gas vaporizer is that it is a very good way to provide a large quantity of high quality inert gas in a short period of time.

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Note 1: Extreme caution must be exercised when the inerting process is used to remove oxygen for the purpose of hot work. This work only produces dependable results when it is done correctly. The tanks must be checked for flammable condition by a very competent person before any hot work is done. Never weld or cut on a tank without first checking for explosive gases with appropriate test equipment operated by experienced personnel. Inerting tanks and checking them for flammable contents is a specialized business, and it should be done by personnel that are experienced. Inerted tanks will most likely loose the inert gas over a period of time and must be checked periodically to confirm their condition. Note 2: Extreme caution must be exercised to keep personnel out of tanks that have been inerted. The inerting process is designed to remove oxygen from the tanks and therefore the inerted tanks will not support life. At the minimum the tanks must be posted to warn personnel of the inert gas, stand by guards may be appropriate in some cases. Inert gas may be odorless (especially nitrogen) therefore it is possible for unsuspecting workers to enter an inerted tank not understanding that the atmosphere will not support life. I favor CO2 as the inert gas medium because it has a pungent odor – when concentrated – that can alert personnel of a dangerous condition. Never enter a confined space without testing the space for oxygen and flammable gases. Note 3: Notes 1 & 2 are subject to many variables, please read them again, we cannot over emphasize the need for extreme caution and the need for experienced personnel when inert gas is used for these purposes. Although it does not sound like much fun, the vaporizer could be used to euthanize bird flocks. We mention that because if it must be done, it should be done correctly. Call us for more information. 713-621-3132