Nové technológie
Nové aplikácie a procesy
Oxygen/air mixed burner “Oxipyr Air” for NOx reduction
All combustion processes are required to satisfy ever tighter limits on NOx emissions. The newly developed “Oxipyr Air” mixed burner, which has a patent pending, satisfies this requirement: it facilitates flameless combustion with air and oxygen as well as the continuous adjustment of O2 content between 21 and 100 percent. This makes it particularly suitable for the melting of non-ferrous metals (T < 1500 °C) in rotary and open-hearth furnaces. Background: At furnace temperatures of 1100 °C, the NOx values for combustion with pure air and pure oxygen, as well as air that has been oxygen enriched by between 21 and 50 percent, are between 10 and 120 ppm and therefore well below the required limits.
Simulations make combustion conversion more economical
When converting glass tanks from combustion with air to combustion with oxygen, this is usually done on the basis of previous tests. Messer is trying something new: the use of simulations beforehand to help determine important parameters such as temperature profiles, exhaust gas quantities and exhaust gas composition, in order to be able to evaluate the conversion result in terms of fuel saved and increased production. Such a simulation on a 25-ton glass tank yielded a fuel saving of 20 percent and an increase in production of 26 percent. Comparisons of simulation results and real measurements on a furnace system have also yielded good results.
Snow Center for dry ice snow improved further
Consistent filling of containers, controlled exhaust gas routing and quick automated filling cycles make the CO2 coolant even easier for our customers to handle. The new “Oto2Snow” technology is therefore particularly suitable for customers in industry, medicine/pharmaceutics and food technology, because reliable and cost-effective cooling of heat-sensitive, high-quality products is often required in these sectors.
New generation of Siber technology for transport refrigeration
Further improvements were made to the long-established and successful Siber transport refrigeration technology. The filling system for filling the transport containers with dry ice snow has been automated and made even more user-friendly. Filling with closed container doors is another substantial improvement. This ensures shorter filling times and easier handling, which means even greater efficiency and profitability for the user.
DuoCondex for cryogenic waste gas cleaning
The newly developed DuoCondex System has now also proven itself in practice. The first unit was integrated into a refrigeration recycling plant built by MeWa (Germany), which was successfully commissioned at ElektroRecycling in Slovenská L’upca (Slovakia) in December.
Soil freezing with “lost” lances
Soil freezing is a tried and tested method of stabilizing the ground for building operations. The freezing is often carried out with liquid nitrogen, which is injected into the soil via lances. A new method now also allows so-called “lost” lances to be used. These are designed in such a way that they can be left in the ground after it has been frozen without hindering the drilling and driving operations or damaging the machinery.
The procedure, for which a patent is pending, has already been used successfully by the firm Porr on a building site in Austria and won the innovation prize at the Austrian Tunnel Conference 2006.
Fine powders for high-quality instrument panels
Car instrument panels are often coated with fine powders consisting of thermoplastic polyurethane (TPU). Extensive tests were carried out in Messer’s cold grinding center in order to optimize the production of these powders. The aim was to test different cold grinding methods and process parameters with regard to product quality and cost-effectiveness and compare them with each other. The result was a powder with a defined particle size distribution that does not need any plasticizers and – unlike the common PVC – does not diffuse onto the windscreen. Based on the process parameters that had been worked out, a large-scale cold grinding plant was built for the firm Geba (Austria).
