Nitrogen is inert, colorless, and odorless gas making up the primary part of the atmosphere. It is also non-corrosive, too cold, and inflammable. As it is inert, it does not support combustion. Moreover, it is not life-supporting. Nitrogen turns into liquid and becomes a cryogenic liquid. These liquefied gases have a usual boiling point below -150°C. When cryogenic liquids vaporize, they produce large amounts of gas.
What are liquid nitrogen tanks?
Liquid nitrogen tanks are a form of storage that is stored, shipped, and handled. There are several types of tanks or containers available, depending upon the requirement of the quantity by the user. The types of tanks are the Dewar, Cryogenic Liquid Cylinder, and Cryogenic Storage Tank. But before moving forward, let’s gain some information on what are High Pressure Liquid Nitrogen Tanks.
High pressure Liquid Nitrogen Tanks
The high pressure tanks have a working pressure range of 4 bar. In some cases, it rises to 37 bar to withdraw gaseous nitrogen. These tanks have larger volumes starting from 180 Litres, which is the minimum. Then 230 Litres is the following size and, it quickly rises to 600-1000 Litres.
Different types of liquid nitrogen tanks
- Dewar
Dewar is a type of non-pressurized container. The unit of measure for Dewar’s capacity is a liter, with the availability of 5-200 liters. Workers can remove the product from small Dewars by pouring. But for larger sizes, it will require a transfer tube. People sometimes get confused between Cryogenic liquid cylinders and Dewars.
- Cryogenic liquid cylinders
Cryogenic liquid cylinders are vacuum-jacketed pressure vessels. They come with safety relief valves and rupture discs. These types of equipment protect the cylinders from pressure buildup. The tanks have capacities of 80 to 450 liters liquid. Besides this, it requires pressure up to 350 PSIG.
- Cryogenic Storage Tanks
These tanks are available in two forms- spherical or cylindrical. They have fixed locations, mounting as stationary vessels. The Cryogenic Storage Tank comes with ASME specifications for pressures and temperatures.
Final Words
Always keep in mind that handling or transporting cryogenic liquids requires suitable vessels. One should avoid any container with a tight-fitting lid for storing liquid nitrogen. A loose-fitting cap gets used as it stops air and moisture from entering the container. Apart from this, it also allows pressure to escape.