ONE FOCUSING OXYGEN BURNER SYSTEM WITH FLUE GAS RECIRCULATION AND REGENERATION FOR FLAME CONTROL

摘要

PURPOSE: An oxygen burner system of exhaust air recirculation, heat recovery, and one-point flow type for controlling flame is provided to form expanded uniform low temperature flame by recalculating exhaust gas and to recover exhaust heat by heat-exchanging high temperature exhaust gas and low temperature oxygen. CONSTITUTION: An oxygen burner system of exhaust air recirculation, heat recovery, and one-point flow type for controlling flame has high temperature and low temperature operation modes. In the high temperature operation mode, first and second oxygen supply quantities of recirculation exhaust gas are controlled so that the oxygen burner system is operated by only oxygen. In the low temperature operation mode, exhaust gas is mixed to decrease oxygen concentration. In order to be activated mixing of combustion gas, the oxygen burner system has a spraying direction of gas to one spot. In high concentration oxygen mode, an exhaust switch valve(69) is cut off so that the exhaust gas cannot be supplied to a combustion chamber(90).