Non-premixed combustion of natural gas in a fluidized bed of inert particles, as an example of highly exothermic reactions, can be carried out at temperatures below 1000 °C, capable of meeting all environmental regulations and energy demands. The fluidized bed technology gains wide applications in metallurgical, energy, chemical and petrochemical industries. Furthermore, the need to ensure high throughput, enhanced gas-solid contact, short residence time and ease of fuel and solids handling, points the turbulent fluidized bed as the promising and feasible technology. This technology can be considered as a framework to put forward the novel devices and can be expanded to examine the incineration of more specialized and hazardous wastes, based on the comprehensive information provided in this book. Although, the book is primarily intended to serve practicing engineers, especially the process, chemical, mechanical and metallurgical engineers, however, other engineers, consultants, technicians and scientists concerned with various aspects of combustion or highly exothermic reactions in turbulent fluidized beds may also find it useful.