The flue gas flows through a turboreactor from the bottom to the top and then enters a downstream particulate control device,which can be either a fabric filter or an electrostatic precipitator. Fly ash from incineration and fresh additives are dosed into the turboreactor, while a large part of the solid material from the reactor is fed back to the fluidized bed as recirculate.
Water is also injected to lower the flue gas temperature and achieve higher separation performance.