PRESSURIZED FLUIDIZED BED COMBUSTION AND GASIFICATION OF COAL USING FLUE GAS RECIRCULATION AND OXYGEN INJECTION

摘要

A combined cycle incorporating pressurized fluidized bed combustion of coal with pure oxygen and recycled flue gas followed by pressurized combustion of the fuel gas using pure oxygen, is a process which produces electricity and heat with a high efficiency and a flue gas with a high CO_2 concentration. CO_2 recovery from this process can be done more easily than from conventional coal conversion processes. In this way a high efficiency coal conversion process can be realized with low CO_2 emissions. The specific aim of the project is to assess the technical feasibility of this process.