Nippon Electric Glass (NEG) has succeeded in melting glass with combustion technology using a hydrogen-oxygen burner.

The company has demonstrated the melting of glass using hydrogen fuel from a hydrogen-oxygen combustion burner, developed in collaboration with Taiyo Nippon Sanso Corporation.

The newly developed hydrogen-oxygen combustion burner can change the mixing ratio of natural gas and hydrogen as appropriate.

In the demonstration, it was confirmed that in either combustion method used, only hydrogen or a mixture of hydrogen and natural gas, a melting capacity equivalent to that from natural gas combustion could be obtained by adjusting the flow rate of fuel according to the mixing ratio.

This enabled oxygen combustion technology and hydrogen combustion technology to be combined, thereby resulting in zero CO2 emissions from combustion.

Oxygen combustion technology removes more excess nitrogen than air combustion, thereby reducing the amount of exhaust gas/heat. It has been introduced in almost all melting furnaces of the company.

State of Combustion:

For glass melting, NEG promoted the switching of fuel from heavy oil to LPG and natural gas, which generate less CO2, and completed the conversion to natural gas in 2010.

The company has set the “promotion of carbon neutrality” as a priority measure and is working on the technological development of CO2-free fuels, such as hydrogen, to achieve carbon neutrality by 2050.

Hydrogen-oxygen combustion technology is expected to contribute significantly to carbon neutrality through its combination with the power ratio of melting energy, which the company has been working on for some time.

The company will continue to develop the technology toward application as a mass production process.