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Cryogenic IQF for extremely fast freezing

Cryogenic spiral freezers from DSI Dantech
Cryogenic freezing of quality food

Cryogenic freezing 

Cryogenic freezing is the fastest IQF (Individual Quick Freezing) method available. By using liquid nitrogen or CO₂, products are cooled almost instantly - ensuring extremely rapid heat transfer and immediate freezing.

This ultra-fast process minimizes the formation of large ice crystals that can damage cell structures. Instead, smaller crystals are formed, preserving the product’s natural texture, shape, taste, and nutritional value -resulting in superior product quality and minimal yield loss.

Cryogenic freezing is ideal for high-value food applications where quality and food safety are critical. It is widely used for seafood, meat, poultry, dairy, and bakery products, as well as in industries such as pharma and metal processing.

Flexible and cost-efficient start-up

Cryogenic solutions are particularly suited for new production lines, seasonal production, or small to medium volumes. With a significantly lower initial investment compared to mechanical systems, compact design, and fast start-up, they offer a flexible and efficient way to begin or expand production.

Cryogenic equipment is easy to operate, quick to clean, and always ready for use. However, as production volumes increase, operating costs will typically exceed those of mechanical solutions - making cryogenic freezing an ideal complement or entry point within a broader processing setup.

Individual quick freezing
Customized solutions

Flexible cryogenic freezing for your production

Cryogenic tunnel freezer from DSI Dantech

Cryogenic freezing is not only a low-investment solution – it is also one of the most flexible technologies available. It allows you to quickly change products, adjust batch sizes, and operate across a wide temperature range using the same system. From -180°C to +600°C in the same machine.

Our cryogenic portfolio is delivered through the CryoFreeze series, offering spiral, tunnel, multipass, and batch solutions tailored to different production needs and capacities.

Cryogenic systems are ideal for space-constrained facilities, new product lines, and early-stage production, where flexibility and fast response are key. They are also widely used for ultra-fast crust freezing, helping stabilize products such as burger patties, poultry, or delicate high-value items before further processing or mechanical IQF freezing.

With fast start-up, compact design, and easy cleaning, CryoFreeze solutions enable efficient and agile production - whether used as a standalone system or as part of a hybrid freezing process.

Fast freezing 

Sustain food quality and yield

Cryogenic freezing of fish and seafood

Fast freezing is the most effective way to preserve food quality - especially when products are frozen at peak freshness. It slows down microbial activity as well as chemical and enzymatic reactions, helping retain nutritional value, taste, and appearance.

Cryogenic freezing takes this a step further. As the fastest freezing method available, it rapidly reduces product temperature and minimizes the formation of large ice crystals. Smaller ice crystals cause less damage to cell structures, preserving texture, shape, and color while reducing drip loss during thawing.

The result is exceptional product quality and improved yield - with weight loss as low as 0.2–0.3% per kg in cryogenic processes.

Inert environments

Hygiene and food safety

Cryogenic tunnel freezer from DSI Dantech

Cryogenic freezing takes place in an inert environment using liquid nitrogen or CO₂, creating highly hygienic processing conditions. The extremely low temperatures help limit bacterial activity and support a high level of food safety throughout the freezing process.

Designed for continuous and flexible operation, cryogenic systems can run for extended periods depending on product type and load conditions. Typical operation ranges from 8 to 24 hours between defrost cycles, with longer runtimes possible when processing pre-treated or crust-frozen products.

The combination of hygienic design, low operating temperatures, and efficient cleaning procedures ensures safe, reliable production with minimal downtime.

Sustainability

An energy-conscious freezing solution

Cryogenic freezing of meat and poultry

Cryogenic freezing requires minimal electrical energy for operation, making it an energy-efficient solution at the point of use. However, from a broader perspective, energy consumption depends on the production of the cryogen itself. Liquid nitrogen is energy-intensive to produce, while CO₂ is often recovered as a by-product from industrial processes, contributing to resource efficiency.

In addition, cryogenic systems are compact and designed for easy cleaning. This reduces water consumption, cleaning time, and the use of chemicals - supporting both operational efficiency and a lower environmental footprint.

Bio-pharmaceutical and metal treatment

Cryogenic freezing and heating of non-food

Cryogenic freezing of pharmaceutical products

While cryogenic technology is widely used for freezing and cooling food, it also plays a key role in a range of non-food applications.

In the bio-pharmaceutical industry, cryogenic systems are used for handling sensitive products such as vaccines, hormones, enzymes, and blood plasma - where precise temperature control and product integrity are critical.

We also design and deliver cryogenic solutions for metal treatment, particularly in the aviation and automotive industries. By introducing sub-zero treatment as part of the heat treatment process, it is possible to reduce internal stress, improve wear resistance, and enhance the dimensional stability of ferrous materials.

Cryogenic processing transforms retained austenite into martensite and promotes the formation of fine carbide structures - resulting in stronger, more durable components with improved performance.

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