LIMESTONE PRELIMINARY SUPPLY FACILITY FOR CIRCULATING FLUIDIZED BED BOILER AND PRELIMINARY SUPPLY METHOD

摘要

PROBLEM TO BE SOLVED: To provide a small limestone preliminary supply facility which can be easily installed without being almost subjected to constraints of an installation location.;SOLUTION: A limestone preliminary supply facility for a CFB boiler 1 comprises ejectors 12 and 22 provided in air transport systems 13 and 23 communicating with a furnace of a CFB boiler 1, and hoppers 11 and 21 for limestone storage communicating with the ejectors 12 and 22 via flow rate restriction means 11a or 21a such as a slide damper. Preferably, the ejectors 12 and 22 are provided in each of a first bypass piping system 13 bypassing a connection part of a limestone quantitative clipping device 3a in a limestone air transport piping system 4 which continuously supplies limestones, and a second bypass piping system 23 bypassing a connection part of a fluid material quantitative clipping device 6a in a fluid material air transport piping system 7 which periodically supplies fluid materials.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT