Journal of Korea Society of Waste Management (한국폐기물자원순환학회지)

Korea Society of Waste Management (한국폐기물자원순환학회)
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A Study on Improvement Measures of Energy Recovery Efficiency through Analysis of Operational Status of Municipal Solid Waste Incineration Facilities

생활폐기물 소각시설의 운영 실태 분석을 통한 에너지회수 효율 개선방안 검토

  • Park, Sang-Jin (Graduate School of Energy & Environment, Seoul National University of Science and Technology) ;
  • Phae, Chae-gun (Graduate School of Energy & Environment, Seoul National University of Science and Technology)
  • 박상진 (서울과학기술대학교 에너지환경대학원 에너지환경공학과) ;
  • 배재근 (서울과학기술대학교 에너지환경대학원 에너지환경공학과)
  • Received : 2018.11.14
  • Accepted : 2018.11.30
  • Published : 2018.12.31
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Abstract

This study was carried out to examine the improvement plan by analyzing the characteristics of imported wastes, operation rate, and benefits of energy recovery for incineration facilities with a treatment capacity greater than 50 ton/day. The incineration facility capacity increased by 3,280 tons over 15 years, and the actual incineration rate increased to 2,783 ton/day. The operation rate dropped to 76% in 2010 and then rose again to 81% in 2016. The actual calorific value compared to the design calorific value increased by 33.8% from 94.6% in 2002 to 128.4% in 2016. The recovery efficiency decreased by 29% over 16 years from 110.7% to 81.7% in 2002. Recovery and sales of thermal energy from the incinerator (capacity 200 ton/day) dominated the operation cost, and operating income was generated by energy sales (such as power generation and steam). The treatment capacity increased by 11% to 18% after the recalculation of the incineration capacity and has remained consistently above 90% in most facilities to date. In order to solve the problem of high calorific value waste, wastewater, leachate, and clean water should be mixed and incinerated, and heat recovery should be performed through a water-cooled grate and water cooling wall installation. Twenty-five of the 38 incineration facilities (about 70%) are due for a major repair. After the main repair of the facility, the operation rate is expected to increase and the operating cost is expected to decline due to energy recovery. Inspection and repair should be carried out in a timely manner to increase incineration and heat energy recovery efficiencies.

Keywords

Acknowledgement

Supported by : 서울과학기술대학교

References

  1. Park, S. W. : Status of disposal and incineration facilities for municipal waste : Focusing on metropolitan cities and provinces in Korea, Journal of Korea Society of Waste Management, Vol. 34, No. 2, pp. 107-116 (2017) https://doi.org/10.9786/kswm.2017.34.2.107
  2. Choi, C. W., Jung, Y. S., Lee J. W. and Kim, W. J. : Analysis of actual condition of recycling policy and policy of food waste policy, The Korean Association for Policy Studies, Vol. 2012, No. 2, pp. 31-757 (2012)
  3. Ko, Y. J., Kang, J. G. Yoo, H. N. Kwon, Y. H., Son, J. H., Jeon, T. W. and Shin, S. K. : Study on the evaluation of incineration heat energy recovery rate in waste incineration facilities, Journal of Korea Society of Waste Management, Vol. 34, No. 8, pp. 826-834 (2018)
  4. Ministry of Government Legislation : Notification on calculation method and procedure of energy recover rate, Ministry of Environment, Notification No. 2017-205 (2017)
  5. Ministry of Trade, Industry and Energy : Guidelines for management and operation of new and renewable energy supply mandatory system and fuel mixture mandatory system (RPS Notification) (2018)
  6. Municipal Solid Waste Resource Recovery Facility Council : Municipal solid waste resource recovery facility operating status (2002-2016)
  7. Korea Environment Corporation : The 5th national statistics investigation of waste (2016-2017) (2017)
  8. Korea Ministry of Environment : Trends in utilization of residual calories of incineration facilities in the community energy facility, Konetic report (2017)
  9. Park, S. W. : Disposal of muncipal solid waste and energy recovery form incinerated waste, Journal of Korea Society of Waste Management, Vol. 34, No. 1, pp. 1-12 (2017) https://doi.org/10.9786/kswm.2017.34.1.1
  10. Yoon, H. Y. and Park, W. S. : An energy efficiency improvement plan for waste to resource facilities in Incheon, Incheon Development Institute, pp. 31-39, 65-90 (2011)
  11. Yoo, H. N., Ko, Y. J., Kwon, Y. H., Jeon, T. W., Lee, Y. K. and Kang, J. G. : Study on the improvement of energy recovery for industrial waste incineration facilities, Journal of Korea Society of Waste Management, Vol. 35, No. 2, pp. 159-169 (2018) https://doi.org/10.9786/kswm.2018.35.2.159
  12. Korea Ministry of Environment : Guide on installation and operation of municipal waste incineration (2012)