Cryogenic Storage Tanks
DSW Cryogenics has been in the business of manufacturing cryogenic tanks since 2007.
Its products have received the stamp of approval in line with significant pressure vessel code requirements.
Its cryogenic storage solutions range from general-purpose open dewars to mili-cold vessels for liquid nitrogen, oxygen, and argon.
Cryo Storage Tank- Technical Drawing
Cryogenic Storage System and their Liquids
Used for the storage of cryogenic liquids, the temperature for these liquids goes below -150 °C or lower. Some of the standard products that can be liquefied inside a cryogenic tank are:
Argon
Nitrogen
Helium
Oxygen
Hydrogen
Cryo tanks also serve another purpose of storing gases at higher temperatures than usual. For example, the following are a few of the gases that can be stored at higher temperatures:
Carbon Dioxide
Nitrous Oxide
Liquefied Natural Gas (LNG)
Uses of Gases and Liquids Stored in Cryogenic Tanks
There are many uses for the gases and liquids stored in cryo tanks, for instance, metal processing, electronics, medical technology, water treatment, the food industry, and energy production.
However, these liquids can also be used for low-temperature applications, such as frosting food and bio-samples storage.
Quality and Stability
The cryo tanks are typically constructed from high-grade materials that can withstand low temperatures and maintain structural integrity.
Common materials include stainless steel, aluminium, and specialized alloys like Inconel, Monel, etc.
The cryo tanks are double-walled, with an inner vessel that holds the liquefied gas made of stainless steel and an outer vessel that acts as an insulating layer made of carbon steel.
The space between the inner and outer vessel is filled with a vacuum or a highly efficient insulating material, such as perlite or foam, to minimize heat transfer and prevent the escape of stored gases.
To maintain the extremely low temperatures required, a cryo storage system allows the circulation of cryogenic fluids, such as liquid nitrogen or liquid helium, to cool the inner vessel and maintain the desired temperature.
Cryogenic storage tanks are suitable for the long-term storage of gases and cryopreserved materials.
The low temperatures prevent degradation and maintain the stability and viability of the stored substances over extended periods.
What temperature is cryogenic storage?
At or below -130°C, metabolic activity in the cell is suspended indefinitely, and the viability of properly prepared cell cultures is protected.
Cryogenic environments are typically achieved with liquid nitrogen at -196°C in the liquid phase and anywhere from -196°C or warmer within the gradient of a vapour phase medium.
How do cryogenic storage tanks work?
Space between inner and outer vessels that contains several inches of insulating material is kept under vacuum conditions to reduce heat transfer, thus decreasing the boil-off of liquid oxygen, nitrogen, or argon stored within.
TYPES OF STORAGE TANKS
The most common types of storage tanks used to store liquids are as follows:
Fixed-roof tanks
External floating roof tanks
Internal floating roof tanks
Domed external floating roof tanks
Horizontal tanks
Variable vapour space tanks
LNG Storage Tanks (Liquefied Natural Gas)
An LNG storage tank is a unique vessel explicitly used to store liquefied natural gas (LNG).
They may be mounted directly to LNG ships or placed above them; their extremely low-temperature storage capability means they can keep LN at temperatures as low as -162 degrees Celsius.
Each LNG storage tank consists of two cylindrical chambers; One filled with LNG and the other with insulation materials.
Containment tanks are among the most frequently used designs, typically reaching 55 meters in height and 75 meters in diameter.
The first four tank types are cylindrical and have axes perpendicular to the subgrade; these tanks are often entirely subterranean.
Horizontal tanks may be deployed in both above- and below-ground applications.
To preserve structural integrity at higher pressure levels, pressure tanks with horizontal orientation and spherically formed bodies (raised). Cylindrical or spherical variable vapour space tanks may also be produced.
Today, more and more of these industrial gases are being delivered to customers in liquid form at Cryogenic Storage Tanks, enabling them to be stored on-site for later use.
DSW designs and produces products that conform to ASME, EN, GB, DOSH, PED, and other domestic and international standards.
