Effect of ring formation on burner flame stability in lime kilns
Source abstract
Abstract
Ring formation in lime kilns is a common problem in pulp mills. Unstable burner operation that causes wide temperature variations within the kiln has been shown to be a main contributor. As rings grow thicker and longer, they are expected to affect the burner flame pattern, alter the temperature distribution, and further aggravate the problem. This study systematically examines the effect of rings on burner operation as a function of primary air and ring characteristics, using a laboratory mock kiln. The results show that primary air greatly affects the burner flame pattern and stability. Without a ring, the flame is brighter and shorter, with an increase in primary air (PA) up to 17%, and blows out at 20% PA or higher. In the presence of a ring, the flame becomes unstable and blows out when the ring is placed near the burner, but it is more stable when the ring is placed away from the burner. Thick and long rings destabilize the flame more than thin and short rings.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Mineral Processing and Grinding · Iron and Steelmaking Processes · Coal Combustion and Slurry Processing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (4)
Show source-provided references
1. Tran, H.N., “Lime kiln chemistry and effects on kiln operations,” TAPPI Kraft Recovery Course, TAPPI Press, Atlanta, GA, USA, 2010.
2. Tran, H.N., Mao, X., and Barham, D., J. Pulp Pap. Sci. 19(4): 167(1993).
3. Tran, H.N., Griffiths, J., and Budge, M., Pulp Pap. Can. 92(1): 78(1991).
4. Gorog, J.P. and Adams, T.N., “Design and performance of rotary kilns in the pulp and paper industry – Part 3 – How flame characteristics and product coolers affect lime kiln performance,” TAPPI Kraft Recovery Operations Seminar, TAPPI Press, Atlanta, 1986.