抄録
In order to remove carbon dust and fission products (FP) submicron particles released from incore of 600 MWt High Temperature Gas cooled Reactor system (GTHTR300; Outlet temperature/pressure, 1, 173K/6MPa), a new high temperature FP filter media (thickness=1.6 mmt) was made of two grain size of Hastelloy-X (13 and 20μm) on the operation conditions (High temperature strength at 1, 273K>1.5MPa, removal efficiency≥90%, initial pressure drop≤0.4%) and tested its filtration performance.
With these results, fundamental specifications of FP filter for HTGR-GT were estimated and the following conclusions were derived.
(1) New filter materials exhibits very high tensile strength over 3MPa at 1, 273K.
(2) 90% removal efficiency against submicron Ag particle can be achieved by coarse grained filter with 20μm.
(3) 0.4% low pressure drop in HTGR-GT system can be achieved by coarse grained filter with 20μm.
(4) On the base of the results obtained in present study, fundamental specifications of FP filter were estimated as following;
Particle size of Hastelloy-X powder: 20μm, Filling factor: 60%, Surface flow rate: 6m/min, Initial pressure drop: 0.4%, Removal efficiency: 90%, Filter thickness: 1.6mm
