고효율 연소를 위한 선회확산연소기의 화염안정화에 관한연구

A Study of Flame Stabilization of Turning and Spreading Combustor for High Efficient Combustion

It is in seri ous condition that environmental pollution caused by combustion from industrial machinery, pl ant equipment, etc., Pollut ion emitted f rom various furnaces whic h are widely used in manufacturing compan ies like heat treatment, p ottery etc., is also in serious level. In indust rial si tes, these fur naces are being replaced by gas-fired furnaces in which gas fuel is used as c lean fuel, theref ore fl ame stabiliza tion of gas-fired furnace s are important to achieve their high efficiency. To stabili ze flam es, tools are used, and the ways are to us e circulating flow, pilot flame, red-hot solid surfa ce, the catal yst an d the like. For t his st udy a new typ e of turning combustor wit h circulating flow is produced and we exami ned the combustibility of the inter nal combustio n chamber with it and the data is used to develop high efficiency fu rnaces. As for temperatu re of combusti on chamber inside, we found that flame which has a less equivalence rate appears that its temperat ure of the ce nter ranges higher, and is closer downstream, it gets equivalent temperat ure distribution. If turnin g angle 30˚ d an 6 0 ˚ both have increased turning intensity, the temperature seems to spread fast in the direction of the wall. Turning angl e 60˚ showed a more stable temperature distribution to the axis. This s tudy can be used usefull y to design hig h-efficiency heating systems.