METHOD FOR SUPPLYING OXYGEN-CONTAINING GAS TO SECONDARY COMBUSTION CHAMBER, AND SECONDARY COMBUSTION FACILITY

摘要

PROBLEM TO BE SOLVED: To provide a method for supplying oxygen-containing gas to a secondary combustion chamber, capable of reducing concentration of CO contained in exhaust gas discharged from the secondary combustion chamber.;SOLUTION: A method for supplying oxygen-containing gas to a secondary combustion chamber comprises an upstream side supply step of supplying oxygen-containing gas to an upstream side space in the secondary combustion chamber, and a downstream side supply step of supplying oxygen-containing gas to a downstream side space in the secondary combustion chamber. In the upstream side supply step, oxygen-containing gas is supplied to the upstream side space so that a single swirl flow occurs in the upstream side space, wherein the single swirl flow is formed by causing oxygen-containing gas to swirl in a specific direction on an axis orthogonal cross section. In the downstream supply step, oxygen-containing gas is supplied to the downstream side space so that a single swirl flow occurs in the downstream side space, wherein the single swirl flow swirls in the same direction as the swirl direction of the foregoing single swirl flow. In the upstream side supply step, oxygen-containing gas is supplied to the upstream side space so as to generate even airflow going toward a central axis of the second combustion chamber on the axis orthogonal cross section.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT