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Orense, 119a th Floor, 28020 Madrid

Hall map

glasstec 2018 hall map (Hall 13): stand B61-5

Fairground map

glasstec 2018 fairground map: Hall 13

Our range of products

Product categories

  • 01  Glass production/Production Technology
  • 01.02  Auxiliary and operating materials
  • 01.02.02  Industrial gases

Our products

Product category: Industrial gases

Oxygen Enhanced NOX Reduction

Clearly cleaner
At Praxair, we believe that the advancements we make in glass manufacturing and production today will pave the way for a more sustainable future. Our Dilute Oxygen Combustion (DOC) technology, which lowers emissions from glass furnaces by as much as 90%, is a huge step in the right direction. But we’re not stopping there. Our DOC technology has succeeded in maximizing energy efficiency, while dramatically reducing NOx and particulate emissions. And we continue to actively explore efficient and economical methods of heat recovery from off-gases to further propel today’s glass manufacturing process into the future.
The application of DOC technology in your glass production results in two main environmental benefits: low NOx and low particulate emissions. Converting an air-fired furnace to an oxy-fuel furnace eliminates most of the nitrogen in combustion air, reducing NOx emissions by as much as 90%. With the low flame temperature of DOC technology, NOx emissions are further reduced to one fifth of typical oxy-fuel flames. Auxiliary DOC burner applications can reduce NOx emissions even in air-fired furnaces with high nitrogen concentration. In addition, the conversion to Praxair’s DOC oxy-fuel system significantly reduces batch carryover and emissions due to reduced gas volumes.
DOC technology reduces particulate emissions by significantly reducing alkali volatilization in glass manufacturing and production. Studies have shown that volatilization is the main source of particulate emissions for gas-fired glass furnaces. Volatilization of NaOH for soda lime silicate glass is dramatically lowered with Praxair’s DOC technology in two ways: reduced water vapor concentration at the glass combustion interface, and lower impinging velocity of combustion gases.

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Product category: Industrial gases

OPTIMELT Thermochemical Regenerator System

Increase the energy efficiency of your glass furnace. Reduce operating expenses compared to conventionally fueled furnaces. Do that and more with Praxair's OPTIMELTTM Thermochemical Regenerator system. This system recovers waste energy stored in regenerator checkers by preheating fuel and endothermically reacting the fuel with the carbon dioxide and water in recycled flue gas. The result is conversion of fuel to hot syngas – which means you'll need 20% to 30% less fuel to melt your glass, compared to oxy-fuel and air-fuel glass furnaces.

What’s more, the OPTIMELT system delivers these results by using only 33% of the checker volume typically required for lower-performing systems. The OPTIMELT system includes regenerators, flue gas recirculation equipment, ducting to the regenerators, blowers, oxygen injectors, and a proprietary control system.

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Product category: Industrial gases

DOC – Wide Flame Burner

This oxy-fuel burner offers wide flame coverage, low NOx emissions and low maintenance. With high flame luminosity and low momentum, it optimizes heat transfer during the melting process and prevents hot spots.

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About us

Company details

At Praxair, 26,000 employees in more than 50 countries are working together towards a common goal: making our planet more productive. For more than 100 years, Praxair has taken something as fundamental as air and turned it into ways to make plants operate cleaner and more productively, food taste better, breathing easier and manufacturing processes more efficient -- in short, to make all our lives better.

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