AN IMPROVED OXYFUEL BOILER FOR EFFICIENT FIRING OF CARBONACEOUS FUEL AND PURE OXYGEN TO ENHANCE THE OPERATING LIFE OF THE BOILER COMPONENTS

摘要

The invention relates to an improved oxyfuel boiler configuration for efficient firing of carbonaceous fuel and pure oxygen to enhance the operating life of the boiler components, comprising a horizontal combustion section for firing carbonaceous fuel and pure oxygen; a vertical heat extraction section for extracting energy from flue gas to generate supercritical steam; a burner assembly for firing carbonaceous fuel and pure oxygen; a bottom hopper for collecting molten ash from horizontal section and a provision for mixing high temperature combustion flue gas from horizontal combination section and low temperature recycle flue gas from main exhaust flue gas.