Bottoming cycle steam turbine systems

Many industrial processes (e.g. in steel mills, glass-works, ceramic factories, cement mills, oil refineries) operate with high temperature exhaust gases (1000-1200 C).

After the process, the gases are still at high temperature (500-600 C). Instead of releasing them directly into the atmosphere, they can pass through a heat recovery steam generator (HRSG) and produce steam.

Steam produced in this manner drives a steam turbine. Thus, the energy of fuel is first used to cover a thermal load and then to produce electricity by a steam turbine system in a bottoming cycle.