Optimization of Combustion Organization of Regenerative Reheating Furnace

Regenerative reheating furnace is an important energy consuming equipment in petroleum industry. So it is very important to optimize the combustion organization of the heating furnace. In this paper, a gas consumption regenerative reheating furnace of oil field was taken as the research object. The impact of air excess ratio, preheating temperature of combustion-supporting air and the ratio of the primary air and secondary air on the generation of NOx in the radiant tube was analyzed by the combination of orthogonal test and numerical simulation. The conclusion was made that when the air excess ratio was 1.05, preheating temperature of combustion-supporting air was 900 degrees C, the ratio of primary air and secondary air was 20%: 80 %, the concentration of NOx in the radiant tube was only 1.1 ppm. The discharge quantity of NOx was reduced to the lowest limitation. And it is an ideal solution to reduce the NOx emissions.