On-site nitrogen crosses Italian boundaries


A state-of-the-art facility on the shores of Lake Como, which designs and produces hydrogen, nitrogen, and zero air generators for analysis laboratories, food and beverage industries, and laser cutting industries. The wide and sunny premises of Claind, company at Lenno (Como), where all R & D, production, and administration activities are carried out, are the representation of its essence.

Design, reliability, and simplicity of its gas generators, alongside with an organization that takes into account capillary assistance to end customer and provides complete and on-site solutions, are the main characteristics that make Claind one of the Italian leading companies in the field of generated modified and controlled atmospheres.

Claind was founded in 1979 by Lorenzo Cogotzi. It is an open and dynamic company, which uses high technology in designing its plants. It has always kept up with the innovations concerning its sector and now it looks beyond national borders. Both past experience and specific expertise in this field allow the company to look far and set ambitious goals. Giovanni Cogotzi, CEO of Claind, said: ‘Our goal is to realise products for analytical and industrial applications, increasingly advanced and suitable for use throughout the world’. However, Claind’s true strength is its ability to match its products with an effective service network, concerning both pre-sale and after sale stages, combining a widespread global presence with high-level local service. Today, Claind sells in about thirty Countries abroad: it is present in all European Countries, Middle East, and Asia. The customers are followed directly on site through a network of carefully selected, trained and constantly updated dealers and agencies. Both development of the commercial network and expansion of the product range will allow the company even more in the future to strengthen its position on the world market.

Instruments for self-production of nitrogen in the wine world

Claind has always had the utmost attention for winemakers, offering simple plant solutions for the needs of every cellar: from small to large industrial realities, Claind has developed different solutions for both nitrogen production and use in the domain of food and beverage. All these solutions are realised in accordance with European regulations concerning E941 food nitrogen.

Safety, ease of use, low operating costs are just some of the most appreciated benefits by customers who have long been supplied with Claind plants. The high efficiency of the molecular sieve system used by these generators greatly reduces the cost of nitrogen compared to such alternative supply sources as cylinders or liquid nitrogen. In comparison with the usual supply on the market, in fact, self-production with a PSA generator offers some important benefits: significant savings on overall costs, because producing and managing nitrogen is much cheaper than buying it and waiting for its delivery, as well as autonomy, that is to say independence from suppliers; higher safety, because the generators do not require storage and displacement of potentially dangerous high pressure cylinders on site, as well as continuity in production thanks to the guaranteed constant distribution, without any problem concerning the event of not receiving a timely shipment; and also the reduction of administrative activity in terms of constant orders, invoices and payments, logistical advantages, as it is not necessary to have manoeuvre areas for gas transportation. Finally, these systems allow recovering the investment in a short time.

As tangible tests and hundreds of installations have proven, on-site self-production of nitrogen is therefore a convenient solution, not only in economic terms, but also as for practical reasons, for instance related to user safety.

Applications in all beverage sectors

The use of gases in the food industry is now consolidated. Their main applications concern food packaging in protective atmosphere and protection of food liquids. Packaging in modified atmosphere consists in replacing, inside the packaging, the air that is in contact with the food with the most appropriate nitrogen mixture to prolong the shelf life of the products. Shelf life is the time when a product retains its sensory characteristics (colour, smell, taste …). Such properties are very important, as either acceptance or rejection of the product by the consumer depend on them. Thus, offering the most effective protective atmosphere is not just a matter of greater persistence of quality, but it also means to ensure greater economic benefit. For the protection of such food liquids as fruit juices, soft drinks, food oils and fats, nitrogen is used inside the storage tank – during the bottling phase and in all stages of pouring and handling of liquid products – to evacuate dissolved oxygen.

In the case of food oils, nitrogen is also used in both milling and grinding stages, with the result of obtaining superior oil in qualitative terms. Non-carbonated waters, which have no stabilising effect from CO2, require nitrogen to create pressure, necessary inside the container, making it more rigid and allowing the operators to pile several pallets without risk of breakage.

On the other hand, for wine, nitrogen is used at all stages of the production process, in order to avoid any contact with oxygen: in fact, wine is very sensitive to oxidative phenomena that involve such irreversible alterations as deterioration of taste and colour. In particular, nitrogen is used for red wines: in homogenisation stage, by nitrogen insufflation; pouring by pressurisation from an autoclave to another one and draining; filling up of must with nitrogen during fermentation for the production of red wines; storage, decanting and pouring; bottling.

As for white wines, instead, it is used during pressing, filtration, inertisation of tanks or barrels, clarification and stabilisation of grape musts, and finally bottling.

Nitrogen is also used for storing and pouring beer, therefore to fill the drums and pour the product. As for beer, however, different types of nitrogen blends may be necessary. The choice of blend proportions depends on the characteristics of the beer itself and can oscillate within a range between 30% and 70% nitrogen.

Innovation is both technological and digital

In addition to selecting best quality CMS, testing and validating them for each batch of supply, PSA Claind technology differs from others thanks to ‘Fast Purity’ patent it owns. All Claind nitrogen generators are based on PSA technology with Claind ‘Fast Purity’ patent. Thanks to PSA (Pressure Swing Adsorption) technology, the generators produce nitrogen from compressed air, by separating the nitrogen molecules from the other ones that are present in the ambient air by means of filtration with molecular sieves (Carbon Molecular Sieves). Only this technology allows guaranteeing nitrogen purity up to 99.999%. The separation effect carried out by CMS is due to the high adsorption efficiency of specific molecular sieves, which can almost completely hold not only molecules of O2, CO2, and H2O, but also hydrocarbons.

Generally, for PSA generators two columns packed with the above mentioned CMS are used. The two columns filter alternatively the room air, provided by an Oil-Free compressor, and regenerate to allow maximum functional automation. Nitrogen separated by oxygen leaves the CMS column to pass into a reserve inside the generator. At the same time, the other column is subjected to depressurising regeneration assisted by a counter-flow (de-absorption). Thus, the process continues in cyclic and totally automatic manner, generally providing an average life of more than 10 years.

The fourth industrial revolution is deeply marked by the entry into the productive system of digitalisation of instruments. A company that wants to grow in the market and be competitive is therefore called to live this revolution. So, in terms of innovation, Claind looks towards industry 4.0 by providing solutions with new ways of integration among machines, information, and digital devices. By controlling the functional parameters of the nitrogen generator (even remotely), Claind customers will be able to reduce the risk of instrument downtime and possible repair costs; reduce maintenance costs; perform both automatic and scheduled activation of the maintenance operations and maximise yield and production levels of the plants.

In addition, the draft law ‘State Provisional Budget for Financial Year 2017 and Multiannual Budget for the three-year period 2017-2019’ include, in addition to the extension for 2017 of the current 140% super-amortization provided for companies that invest in new material capital equipment, also an hyper-amortization of 250% for investments in new material capital equipment that are ‘functional to the technological and digital transformation of companies according to Industry 4.0 model’, thus facilitating investments in this type of product.

Qualified assistance

During pre-sales stage, a competent and specific commercial structure for each application is able to provide assistance by supporting and guiding the customers in choosing the optimal solution for their needs. In post-sales, Claind provides qualified assistance for installation, maintenance, and repair of its products worldwide, through a network of certified distributors and assistance centres, widely spread in the territories in which it operates. The technical staff is periodically subjected to training and skill-checking programs, aimed at total guarantee of service quality. Finally, to complete its offer, Claind suggests further services in addition to installation and maintenance, such as: IQ / OQ certifications, scheduled service contracts, customers’ technical staff training, and warranty extensions.


The little TIVANO
Tivano is a compact and complete Oil-Free compressor generator that can be hanged on the wall in the cellars of pubs and restaurants and, coupled with a small storage tank, it constantly keeps the wine pouring line under pressure, without the need for interventions to replace cylinders. The system can also be combined with an integrated mixer in the appliance, which allows obtaining different mixtures of CO2 and nitrogen if required by the different drinks (beers). It is designed according to the PSA (Pressure Swing Absorption) principle, which is the most efficient and robust system, besides being fully automatic. It consists of an air separator for nitrogen production and a multi-channel mixer that produces five different blends (pure nitrogen, pure carbon dioxide, and three mixtures of CO2 + N2). The only required operation consists in setting the pressure of each output, by using pressure regulator and pressure gauge mounted on the front panel. The base version can supply 3.5 nl / min of nitrogen at a pressure of 7 bar (g) at purity better than 99.5%, but specific calibrations for higher purities and pressures are available upon request. Generated nitrogen is stored in an outer tank (normally 50 or 100 litres), which is directly connected to the generator with a polyethylene flexible pipe. It is completely independent, thanks to its oil-free internal compressor. It is equipped with a ‘clever’ system and can produce nitrogen only when needed. It  automatically enters stand-by when there is no nitrogen consumption.
Submit your comment

Please enter your name

Your name is required

Please enter a valid email address

An email address is required

Please enter your message

Bottling World © 2019 All Rights Reserved