Cullet Preheating System

- Development of Energy Saving Equipment -

We developed a cullet preheating system to achieve energy saving in glass furnaces, which was commissioned by Smaller Enterprise Corp.
Generally, in glass melting furnaces, preheated cullets are added in the proportion of 40% or more to the material where silica sand, lime, soda ash, etc. are mixed together and kneaded.

 Cullet preheating system

 Cullet preheating system

 Cullet preheating system

This system recovers heat by passing high-temperature exhaust gases through cullets (material) to preheat them .
In a demonstration test furnace, we have succeeded at reducing fuel consumption by 28% with this system, in comparison with the system without cullet preheating.