Process design for thermal systems
Metso offers extensive computer models for simulating thermal systems.
When designing a new plant, or modifying an existing one, Metso relies on an extensive collection of proprietary simulation models to size equipment. These include both general models for rotary kiln heat transfer and specific models tailored to, for example, preheater lime plants and iron ore pellet plants. The goal of all models is to provide detailed data for operating conditions such as temperature and species profiles in the kiln, fuel rate, and off-gas flow. The process-specific models also provide rating data for auxiliary equipment such as fans and dust collectors. Models are of course validated against field data, and are frequently used for analysis and reporting in plant audits.
The graph above shows results from the petroleum coke calciner simulation. The program has calculated the various gas species along the axis of the kiln, taking into account air injection and volatile evolution and combustion
Metso maintains a test facility with direct and indirect batch and continuous rotary kilns, fluid beds and other processing equipment.