Nitrogen Tank Blanketing in Portland

Nitrogen is utilized for various purposes in the specialty gas industry. Aside from utilization in food and drug preparation, it is used in the preservation of various (typically highly flammable liquid) materials. This technique of preventative maintenance is named blanketing in the specialty gases industry.

In the majority of tank vessels there is headspace that, left void, can activate the oxidation process for materials that are prone to this occurrence. In order to maintain these substances in their purest condition during transportation and storage, high purity, dry nitrogen is used to substitute the air that typically inhabits the headspace in these tanks.

To restrain the amount of nitrogen that occupies the tank, a valve control system on the tank regulates nitrogen amounts. The valve regulates to maintain constant positive pressure in the headspace of the tank. While the tank is emptying, there will be a substantial increase of nitrogen to account for the empty space.