Details of Sustainability Topics

Taiyo Nippon Sanso has jointly developed a hydrogen-mixed oxygen-enriched burner for use in a new type of cullet* melting furnace with Ohara Inc., with the aim of reducing greenhouse gas (GHG) emissions.
The developed burner is used for combustion in cullet melting furnaces and allows for flexible control of oxygen concentration and the mixing ratio of natural gas and hydrogen. In tests using a simulated cullet melting furnace, three oxygen concentrations (25%, 30%, and 40%) and three hydrogen co-firing ratios (10%, 20%, and 30%) were evaluated. All test conditions achieved a GHG emissions reduction of 29% to 62% compared to conventional air burners (see Figure 1 for details). The burner demonstrated heating performance equivalent to conventional air burners (in terms of temperature ramp-up and heat uniformity), while the NOx concentration in the exhaust gas remained below the regulatory limit.
The company will continue advancing the development of oxygen combustion technologies for application in various industrial furnace processes, as part of its ongoing efforts toward carbon neutrality.

* Cullet refers to finely crushed glass fragments.