Giorgio Minestrini
<[email protected]>

Stara Glass S.p.A.
Piazza Rossetti, 3A/1
16129 – Genova Italy

Giorgio Minestrini is a senior R&D and process engineer of Stara Glass’ technical department since 2011.

He is specialized on thermodynamic calculations and he is responsible for diagnosis and inspection services including:

  • Field tests;
  • Energetic diagnosis of the furnaces and heat recovery systems;
  • Endoscopy;
  • Thermography.

With his team, he developed and engineered systems aimed to reduce NOx emission and to improve energy efficiency of the glass furnaces.

During Furnace Solutions 13 he won the Michael Garvey Award 2018.

Giorgio has been involved in several other projects like the development of:

  • Centauro Furnace, i.e. an End Port furnaces with an hybrid heat recovery system;
  • Cullet preheating system;
  • New portneck geometries;
  • A lot of mathematical models including thermal bridges, energy balance, thermal exchange inside the regenerators; etc.

Giorgio is also responsible for developing and maintaining good relationships with academic world in order to identify new research lines and to create strong-scientific cooperation.


Facing the challenge: NOx containment & energy saving for a more sustainable glass industry.
Giorgio Minestrini*, Ernesto Cattaneo, Alessandro Spoladore, Alessandro Mola
Giorgio Minestrini: Stara Glass R&D Senior Engineer
Ernesto Cattaneo: Stara Glass R&D Senior Engineer
Alessandro Spoladore: Stara Glass R&D Engineer
Alessandro Mola: Stara Glass R&D Manager

Glass industry is nowadays facing the problem of nitrogen oxides that come from its typical very high-temperature diffusive combustion systems. The first step to contain NOx pollution is to proceed at the level of the combustion chamber employing primary containment measures, which are techniques for the non-generation of nitrogen oxides.

Within the Prime Glass project, funded by the EU LIFE programme (, Stara Glass, together with the University of Genova and Stazione Sperimentale del Vetro, developed and patented two techniques for the primary containment of NOx in regenerative end-port glass furnaces that gave excellent field results thanks to the percentages of NOx abatement of the order of 30/40 %.

These two techniques have been developed taking inspiration from other industrial fields but they have been engineered to be applied in the glass industry context with the aim of significantly reducing their environmental impact.
It’s about:
• Strategic Waste Gas Recirculation
• High Efficiency Air Staging

One of the direct consequences has been the optimisation of the furnace design because to have a better impact of the new glass furnaces on the environment it is necessary to start with a different design: this means couple the well-based experience with the new criteria and the new geometries.

The great challenge of research and industrial development in the field of glass is represented by the overcoming of inertia to change. Being processes known for centuries, every change introduced is subject, by the glassmakers, to a meticulous analysis and careful evaluation because “nobody wants to be the first, but nobody wants to be the second”.
This contradiction in terms reveals a glimpse that allows us to make the necessary innovations, i.e. those requested by both regulations and the environment.

The goal, although extremely challenging, is not to completely revolutionize the glass industry with completely new technologies, but to make glass production more sustainable.