| 摘要 |
PROBLEM TO BE SOLVED: To provide an oxygen concentration measuring apparatus for measuring oxygen concentration without fault even in a fluidized bed type refuse incinerating furnace. SOLUTION: The oxygen concentration measuring apparatus comprises an outer tube 1 provided through a furnace wall 7, an inner tube 2 arranged in the outer tube and having a gas outlet 3 at a side to an outer end of a furnace, a detector 5 having a sensor 4 provided at the outer end of the furnace of the inner tube and extended from a position of the outlet in the inner tube to the inside of the furnace, and a gas nozzle 6 disposed at the inside of the furnace from the outlet between the outer tube and the inner tube and directed in an inward direction in the furnace. A gas injected from the nozzle 6 sucks the gas in the furnace from a gas suction port of the inner tube into the tube and forcibly circulates it into the furnace via the outlet and the outer tube. |
