BV Glas and GWI complete their HyGlass project

BV Glas and GWI complete their HyGlass project
Photo source
© GWI

Date: 9 May 2022

The Federal Association of the German Glass Industry (BV Glas) and the GWI research institute in Essen (GWI) have successfully completed their collaborative HyGlass project.

The project objective was to investigate the possibility of using hydrogen in regenerative glass furnaces as a long-term replacement for gas. Both hydrogen-gas mixtures and pure hydrogen were examined.

The HyGlass project was funded by the North Rhine-Westphalian Ministry for Economic Affairs, Innovation, Digitalisation and Energy’s progres.nrw - Innovation subsidy programme and NRW.Energy4Climate. It was also strongly supported by glass manufacturing companies in North Rhine-Westphalia. In addition to the use of hydrogen in the molten glass, the experts at GWI considered logistics and procurement aspects, as well as technical feasibility along the value chain. Another focus was the analysis of hydrogen’s impacts on both combustion and glass quality.

The project results are very positive. “Hydrogen is one of the most promising candidates in the switch-over from conventional to regenerative energy sources,” explained Dr Johann Overath, Director General of the Federal Association of the German Glass Industry. “BV Glas has been assessing the potential of hydrogen for a long time already in the framework of its decarbonisation strategy.” The experiments and simulations have shown that the use of hydrogen has only moderate impacts on combustion as long as the fuel-air ratio and burner output are maintained at a constant level with a control strategy. Both the furnace room temperature and heat transmission remain more or less constant. The use of hydrogen can lead to higher NOx emissions. However, these can be compensated by technical measures at the furnaces.

On the other hand, it is a challenge to minimise the impact of hydrogen on glass quality. “We have established that the use of hydrogen in the molten glass can indirectly cause changes in glass quality such as discolouration. Interestingly, the discolouration is not dependent on the hydrogen content in gas-H2 mixtures, so it cannot be regulated by increasing or decreasing the admixture rate,” explained Dr Anne Giese, Head of the Industrial and Fuel Engineering Department at GWI. However, it would be possible make an adjustment by changing the composition of the glass batch. Further comprehensive research is necessary to achieve the desired long-term glass quality consistency.

To ensure that the glass industry can permanently switch over to hydrogen it will be necessary to increase the availability of green electricity because the project additionally revealed that available power generation capacity (wind and solar) within a 20 km radius of the relevant glass production facilities in North Rhine-Westphalia is not currently sufficient for hydrogen production, even if the full capacity were available to the glass industry.

600450 BV Glas and GWI complete their HyGlass project glassonweb.com

See more news about:

Others also read

The Fenestration and Glazing Industry Alliance (FGIA) has released two updated specifications for the testing side-hinged doors.
Finally, "Glasstec" returns to Düsseldorf, and Kuraray will be there to showcase all of the latest products and services from SentryGlas® and Trosifol®.
The date for the next exhibition has already been set: Intersolar Europe 2023 will take place from June 14– 16 at Messe München.
The National Green Building Standard (NGBS) appointed Tom Culp, Ph.D., of Birch Point Consulting LLC and NGA Energy Code Consultant, to the 2024 ICC 700 Residential Green Building Standard Consensus Committee.
Şişecam participated in the 4th Innovative Glazing Global Virtual Summit addressing the latest trends in the glass industry.
HEGLA says farewell to their company founder, longstanding Managing Director and Executive Board Member Siegfried Glaser.

Add new comment

From industry

Am Pfahlgraben 4
35415 Pohlheim
Germany