Deposit Bottles

The glass manufacturing industry is a highly energy-intensive industry that has been one of the focal sectors of the US Department of Energy ís Industries of the Future (DOEIOF) initiative. This paper will provide an overview of energy intensity, and energy and environmental opportunities in this industrial sector. First, we will provide an overview of the glass manufacturing process, with a critical focus on both traditional and recent process systems and their energy intensity. While the glass manufacturing process is very simple in concept (involving the melting of fine silica sand and formation into specific geometries), there are a broad range of process and power supply variations, all of which can have profound effects on the net energy efficiency and energy density (BTUs per lb of product). Attempts to improve glass manufacturing energy efficiency are complicated by the complexity of some of the process equipment, particularly since many glass-manufacturing systems are custom engineered, one-of-a-kind systems. Consequently, costs associated with upgrades for efficiency can be very high. Opportunities for energy efficiency improvement will then be discussed, first in general for the glass manufacturing industry as a whole, and then for a specific case study example facility.