OXYGEN NOZZLE ARRANGEMENT STRUCTURE OF REVOLUTION FLOW HIGH TEMPERATURE FURNACE, AND OXYGEN FEEDING METHOD

摘要

PROBLEM TO BE SOLVED: To efficiently contact a tar-undecomposed gas fed into a revolution flow high temperature furnace with a high temperature region by flame in an oxygen nozzle arrangement structure and an oxygen feeding method in the furnace.SOLUTION: Provided is an oxygen nozzle arrangement structure comprising: a primary oxygen nozzle 5 provided at an upper edge part 2a of a furnace body 2 and feeding oxygen in the axial direction to the inside of the furnace body 2; and a secondary oxygen nozzle 6 provided at the axial direction position equal to a tip height t of flame by the primary oxygen nozzle 5 in the side part of the furnace body 2 and feeding oxygen along a direction tilted so as to copy a revolution flow R of a tar-undecomposed gas G1 into the furnace body 2.