Cryogenic tanks are an essential part for many industries, as they are a key element to store certain gases crucial for diverse processes. In light of such importance, we take a look at the different possibilities in the current cryogenic tanks market and provide 4 key questions to answer before acquiring a cryogenic container.
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Cryogenic tanks are a type of industrial storage tank ideal for situations where large quantities of gas need to be stored in liquid form.
They are the right solution to store substances such as Liquid Oxygen, Liquid Nitrogen, Argon, C02, LNG, LPG, Liquid Hydrogen, etc, all of which must be stored at very low temperatures in order to maintain their properties. Thus, it’s common to hear of a cryogenic oxygen tank, a LNG cryogenic tank, and so forth.
As more and more industries require the gases mentioned above, demand for cryogenic tanks keeps growing and is projected to grow at a higher rate than 5% CAGR between and .
The main characteristics of an adequate cryogenic storage tank include:
Related content: Cryogenic dewar: tips for a safe, optimized storage
The structure for cryogenic tanks is made of three parts:
While cryogenic tanks have this basic structure in common, it’s possible to distinguish between two types of cryogenic container:
When choosing cryogenic tanks, companies must consider what substances they need to store, and communicate it to the tanks manufacturer.
Different substances will require a different tank shape and design, so that it perfectly adapts to the cryogenic liquid it will need to store.
Some common substances that require a cryogenic container include:
Different companies will be in need of different tank sizes, depending on their substance demand and use, among other factors. At Cryospain we are specialized in tanks for large quantities >500 m3
Stainless steel and carbon steel are the main two materials for building cryogenic tanks. At the same time, different insulating materials can be used: from cellular glass, to rockwool and expanded perlite. Thus, each project must be studied separately, in order to ensure the right materials are used.
Other criteria to pick the right cryogenic tanks can include:
Keep reading: Everything you need to know when choosing cryogenic tanks for gas storage
At Cryospain we develop custom flat-bottom cryogenic tanks, as well as large vacuum-insulated cryogenic pressure vessels, all according to our clients’ needs as well as international and local regulations.
We are in charge of designing these cryogenic tanks from the first sketches through to construction and commissioning, coordinating our design, engineering and production teams.
In order to take into account our clients’ needs and to guarantee a smooth implementation, we provide a careful design process through computer-aided systems, which provide virtual simulations of the future cryogenic tanks.
Benchtop liquid nitrogen containers are designed for point-of-use, short-term sample storage or transfer of LN2 into a shipping vessel or cold trap. Benchtop dewars store fewer than 10 liters of liquid nitrogen and do not include sample storage racks. Certain benchtop vessels include carrying handles for easy transport and vented lids to prevent over-pressurization.
Free-standing liquid nitrogen systems are optimal for long-term sample storage within a cryogenic environment. Select models include cryo-box racks for easy sample identification, low liquid level alarms to maintain cryo-preservation conditions, and locking lids for high-security areas. High-capacity, free-standing systems are designed to store more than 10,000 samples and over 300 liters of liquid nitrogen.
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Nitrogen Storage Systems for Cryogenics
Long-term sample storage and retrieval systems include racks compatible with 81-cell or 100-cell cryogenic boxes to maximize sample capacity. Certain systems include locking lids for added sample protection and wheeled bases for easy transport. Low liquid level alarms alert users when an LN2 refill is required.
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Low-capacity systems store less than 200 samples while high-capacity systems store more than 10,000 samples. Static holding times vary from less than 20 days to more than 300 days.
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Benchtop transfer vessels are designed to transport liquid nitrogen from a holding tank to a sample storage system or shipping vessel. Select transfer vessels are compatible with pressurized liquid withdrawal devices to prevent LN2 spillage and evaporation.
Liquid Nitrogen Transfer Vessels by Thermo Fisher Scientific
Dry shipping vessels maintain cryogenic conditions for global sample transport. Select units include secure data-logging systems for 21CFR Part 11 compliance.
For laboratories without a liquid nitrogen delivery service, cryogenic vessels are earmarked as long-term LN2 holding tanks to supply sample storage systems and cold traps used throughout the lab.
For labs purchasing an LN2 holding tank, a critical specification is liquid nitrogen storage capacity. Low-throughput systems store fewer than 50 liters of liquid nitrogen, while high-throughput tanks store more than 200 liters.
Static holding time is the length of time listed in days, during which the cryogenic tank retains the supplied volume of liquid nitrogen. This metric, however, presumes that the container is not accessed during the stated period of time. LN2 evaporation will occur each time the cryogenic tank is opened.
Narrow-neck pressurized containers are designed to reduce LN2 evaporation rates, whereas wide-neck dewars allow for greater liquid nitrogen evaporation each time the container is opened.
Certain cryogenic tanks, such as Thermo Fisher Locator Storage Systems, include ultrasonic level monitors with continuous digital LED readouts and audible/visual alarms when liquid nitrogen levels fall below set-point.
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Sample storage systems accommodate stainless steel and aluminum racks for easy retrieval of cryo-storage boxes. Racks are compatible with 81-cell or 100 cell boxes for 2 ml cryo-tubes or 1.5 ml twist-cap vials. Certain models offer racks compatible with 5 ml high-capacity vials.
For high-security sample storage, certain LN2 containers include locking lids equipped with optional padlocks, keypads or fingerprint scanners.
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Shop online to compare pricing, features, and selection for a wide variety of liquid nitrogen storage vessels, dewars, dry shippers, and freezers.