Improvement of operating conditions in waste incinerators using engineering tools.

Operation parameters such as waste feed rate, air supply, and temperature of the gas in incineration plants should be carefully determined for various situations, which include seasonal and annual changes in fuel characteristics, and performance change of the hardware. These changes may cause off-design point operation of the incinerators, which results in many problems in operation of the flue gas treatment system, low-oxygen in the combustion chamber, thermal damage of the incinerator wall, and so on. In this study, an engineering approach using computational tools along with field tests and observation is presented. For computational tools, a 0-dimensional model for heat and mass balance, computational fluid dynamics (CFD), and a global prediction model for dioxin are employed. They play a key role in diagnosing incineration systems and evaluating changes in operating conditions. The typical results of each tool are reported, and examples of improvement in operating performance are described.

[1]  Yoon-Seok Chang,et al.  Evaluation of polychlorinated dibenzo-p-dioxin/dibenzofuran (PCDD/F) emission in municipal solid waste incinerators , 1999 .

[2]  A. Buekens,et al.  On the mechanisms of dioxin formation in combustion processes , 1995 .

[3]  Jim Swithenbank,et al.  Design optimization of a large municipal solid waste incinerator , 1991 .

[4]  Sangmin Choi,et al.  Design consideration for cross jet air mixing in municipal solid waste incinerators , 1997 .

[5]  Y. R. Goh,et al.  Mathematical modelling of MSW incineration on a travelling bed. , 2002, Waste management.

[6]  Changkook Ryu,et al.  3-Dimensional Simulation of Air Mixing in the MSW Incinerators , 1995 .

[7]  Changkook Ryu,et al.  THERMAL REACTION MODELING OF A LARGE MUNICIPAL SOLID WASTE INCINERATOR , 2004 .

[8]  Donghoon Shin,et al.  A process simulation model for a 2 ton h−1 incinerator (a combined bed combustion and furnace heat transfer model) , 1998 .

[9]  Changkook Ryu,et al.  Computational fluid dynamics evaluation of good combustion performance in waste incinerators , 1998 .

[10]  Donghoon Shin,et al.  The combustion of simulated waste particles in a fixed bed , 2000 .

[11]  P. H. Abelson.  Waste management. , 1985, Science.

[12]  C Ryu,et al.  Combined Simulation of Combustion and Gas Flow in a Grate-Type Incinerator , 2002, Journal of the Air & Waste Management Association.

[13]  Jim Swithenbank,et al.  Formation and elimination of polychlorinated dibenzo- p -dioxins and polychlorinated dibenzofurans from municipal solid waste incinerators , 2003 .

[14]  Jim Swithenbank,et al.  Mathematical modelling of the burning bed of a waste incinerator , 1998 .