After the removal of unwanted components — mainly carbon dioxide and humidity — in a molecular sieve, the air is passed into heat exchangers where it is cooled until it liquefies. This is followed by rectificatory separation into the individual components. A further option is the production of liquid products by means of additional cooling using expansion turbines.
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Messer offers a reliable and varied range of cryogenic air separation units, providing maximum flexibility from 25 to more than 2, metric tonnes per day in terms of oxygen capacity. Nitrogen N 2 is known for its protective qualities, which is why it is often used in inerting applications.
In order to meet the demand for larger quantities of nitrogen at low costs, Messer has developed the CryoGAN generator that operates on the principle of cryogenic air separation. With CryoGOX oxygen generators, Messer has developed a cost-effective, reliable, flexible and uncomplicated oxygen supply. They are in demand from a variety of industries pulp and paper, glass, ceramics, chemicals and metallurgy. These generators, too, are based on the principle of cryogenic air separation.
The stream of gaseous oxygen is available to customers at pressures of up to 20 bar. The main advantages of this concept are the high oxygen purity CryoGOX oxygen generators are built by Messer according to customer specifications. Capacities from 85 to metric tonnes a day cover most industrial applications. The PSA Pressure Swing Adsorption process is based on the physical adsorption properties of specially treated molecular sieves. PSA units only need clean, dry air in order to generate N 2 or O 2 cost-effectively and with purities of up to This air is compressed up to 10 bar, purified and then passed through vessels filled with the molecular sieve, either carbon molecular sieves CMS or zeolites, depending on the type of gas required O 2 or N 2.
While one vessel is in operation, the other is regenerated by reducing the pressure. The unwanted gas components are released into the atmosphere. VPSA units have a fan which generates an overpressure of around 1. The membrane process makes use of the different rates at which air gases diffuse through a polymer membrane. Atmospheric air is filtered, compressed to the required pressure, dried and then passed through a membrane module. The air components with the higher rate of diffusion O 2 and CO 2 penetrate the polymer membrane fibres more quickly, resulting in a nitrogen-rich flow as the primary product.
The purity of the N 2 gas flow reaching A secure supply from a backup source — just in case it is ever needed — is the icing on the cake of any onsite concept, allowing the consumer to sleep easy with regard to the gas supply, even when there are maintenance downtimes, power cuts or other unforeseeable events. Every single customer receives a reliable supply of technical gases from Messer, even during planned and unplanned downtimes.
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Messer offers a whole range of technologies for the production of hydrogen and Syngas, with the choice of the optimum process depending on several factors. These include the application, volume requirement and purity. The experts from Messer will be happy to advise you on this. Steam reformers use natural gas as a feedstock and can be used for both small and large hydrogen units. Finally, the hydrogen is purified in a PSA unit. It leaves the PSA unit under 15 to 30 bar of pressure and with a purity of up to For companies that already have a hydrogen supply but require higher purities for downstream use, Messer can supply hydrogen PSA units as separate units.
Technical gas supply requirements essentially depend on the industry and applications in question. This means that the customer can use the required gases just as easily as electricity from the grid. Such a supply is based on an appropriate supply contract for technical gases. The company operates air separation units for bulk production and for supplying large industrial consumers from the steel, chemical and petrochemical industries.
Liquid oxygen, nitrogen and argon are some of the products in greatest demand. Messer has over years of experience in the design and operation of air separation units and is constantly strengthening its lead in expertise. First solid collection of Samsonite suitcases equipped with hidden widening in all sizes, giving the possibility of increasing the luggage capacity as needed.
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