NOTHING GOES UP IN SMOKE.
The energy management of top gas is only one example of many. In the steelmaking process, coke oven gas is produced in the coking plant, while blast furnace and converter gases are produced in the blast furnace and steelmaking plant. These gases are generally referred to as top gas and are processed as soon as they are extracted. They are stored in gasometers and used in the voestalpine power plant to generate energy. The process requires closely coordinated control of the energy system. Sometimes, when a malfunction occurs in the system, the top gas must be burned in a flare stack, resulting in so-called flare loss. Modern measuring technologies, digital intelligence, digital controls and infrastructural network optimizations have substantially increased efficient energy use in recent years, and flare losses have been minimized considerably. Here are some of the figures: In 2020 we reduced the energy of flare losses by roughly 380 GWh as compared to 2009. That corresponds to the annual heating energy requirement of approximately 20,000 households. This is an enormous amount of conserved energy.