PURPOSE: To administrate more precisely a furnace operation and to maintain a reaction in the furnace satisfactorily for a long time by assuming and grasping accurately a thermal furnace core from bosh part to shaft part in horizontal and vertical directions for a long time.
CONSTITUTION: Suitable numbers of temp. measuring sensors B having ≥2 temp. sensitive parts P1WP6 in a wall thickness direction and for detecting temperatures at different positions in said direction are embedded in a circumferential direction in refractory wall of shaft furnace, and the thermal center in the furnace is obtained by calculation from temp. information groups obtained by each temp. measuring sensor. Next, the thermal center or thermal center of gravity obtained by calculation at each level is made as the thermal furnace core in horizontal direction in each level. The vertical direction distribution of the horizontal direction thermal furnace core in each level is grasped. Furthermore a deviation of thermal furnace core at present time is assumed from true verticality and the horizontal furnace core. Thereby, the position of the thermal furnace core from above the tuyere to the throat can be assumed and grasped exactly in horizontal and vertical directions for a long time.
KONISHI MASAMI
NAGAI NOBUYUKI
UEHARA TERUHISA
YABATA TAKESHI
TAKANO SHIGERU
