METHOD FOR MEASURING AMOUNT OF Ca CONSTITUENT IN ASH IN PRESSURIZED FLUIDIZED BED COMBUSTION APPARATUS, AND CONTROL METHOD OF THE PRESSURIZED FLUIDIZED BED COMBUSTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a measurement method that can acquire the amount of Ca constit uent in ash rapidly without any time for dissolving a sample and can measure the amount of Ca constituent in ash in a pressurized fluidized bed combustion apparatus for coping with the change in the operation condition in the pressurized fluidized bed combustion apparatus, and at the same time, to provide a control method of the pressurized fluidized bed combustion apparatus which is easily automated and speeded up and by which the amount of Ca constituent can be measured, and the working condition of the pressurized fluidized bed combustion apparatus can be rapidly grasped and the control can be appropriately performed. SOLUTION: The control method includes an ash-sampling process for sampling the ash of fuel slurry at each specific period from the pressurized fluidized bed combustion apparatus by burning the fuel slurry containing carbon and limestone in a fluidized bed, a dissolution process for dissolving a Ca constituent by performing the acid treatment of the ash, and a determining process for determining the amount of Ca constituents in liquid obtained by dissolution in the dissolution process. COPYRIGHT: (C)2003,JPO