OXYCOMBUSTION CIRCULATING FLUIDIZED BED REACTOR, METHOD OF OPERATING SUCH A REACTOR AND METHOD OF UPGRADING A CIRCULATING FLUIDIZED BED REACTOR

摘要

An oxycombustion circulating fluidized bed reactor includes a reactor chamber, and a gas distribution arrangement provided in the bottom section of the reactor chamber for introducing gas into the reactor chamber. A windbox chamber having gas introduction nozzles introduces gas from the windbox chamber into the reactor chamber and an has an inlet that opens into the windbox chamber. A first gas feeding system introduces gas into the windbox chamber, and a second gas feeding system introduces gas into the wind box chamber in the vicinity of at least one nozzle inlet.