Characteristics of the Continuous Measurement and the Fuel Analysis for Emission Calculation of Carbon Dioxide in a Coal Fired Power Plant

석탄화력발전소 이산화탄소 배출량 산정을 위한 연료분석법과 연속측정법의 특성

  • Published : 2017.03.30

Abstract

This study calculates carbon dioxide emissions using the fuel analysis and the continuous measurement from 500 MW-class coal-fired power plants and evaluates the characteristics of each method. The emissions calculation using fuel analysis was the lowest calculation among the emissions calculation methods. This is because of low net calorific value analysis. When using the low calorific coals, it is beneficial to utilize the fuel analysis. Also it showed the characteristics of the lower calculation emissions when used the as fired coals than the as received coals. However, the difference is negligible to less than 2%. As sample analysis personnel and equipment are limited in the present circumstances, it is also deemed appropriate to use the as received coals to fuel analysis. Continuous measurement showed somewhat higher emissions than the fuel analysis, and lower emissions than calculation method using domestic emission factors. Thus, if the calculated emission using fuel analysis increases with the coal type changes, it is beneficial to using modified flow rate measurement method.

500 MW급 석탄화력발전소를 대상으로 연료분석법 및 연속측정법을 사용하여 이산화탄소 배출량을 산정하고 특성을 알아보았다. 연료분석법은 산정방법 중 배출량이 가장 낮게 산정되는 것을 확인하였다. 이는 순발열량이 낮게 분석되기 때문으로 저열량탄을 사용하는 경우 연료분석법을 활용하는 것이 유리하다. 또한 입하탄 보다 소비탄을 시료로 사용하였을 때 배출량이 낮게 산정되는 특성을 보인다. 하지만 차이는 2% 미만으로 미미하여, 분석 인력 및 장비가 한정된 현 여건에서는 입하탄을 연료분석에 사용하여도 적정하다고 판단된다. 연속측정법은 연료분석법 대비 배출량이 다소 높게 산정되지만 국내외 제시된 배출계수를 사용한 산정량보다 낮게 산정된다. 따라서 석탄 탄종 변화로 연료분석법에 의한 산정량이 증가할 경우, 유량 측정방법을 보완하여 사용한다면 배출량 산정 시 유리할 것이다.

Keywords

References

  1. IPCC, 2006, Guideline for National Greenhouse Gas Inventories.
  2. Ministry of Environment, Climate and Air Quality Management Division, 2014, The Administrative Guideline for the Greenhouse gas Target Management System, 2014-186.
  3. Korea Energy Agency, 2013, National Inventory Report
  4. Jeon, E. J., 2010, Development of CO2 Emission Factor by Fuel and CO2 analysis at Sub-bituminous Fired Power Plant, Journal of Environmental Health Sciences Vol. 36, No. 2, pp. 128-135.
  5. Lee, S. J., Kim, S. K., 2010, Calculation of $CO_2$ Emission for Fossil-Fired Thermal Power Plant considering Coal-Oil Mix Rate, Journal of the Korean Institute of IIIuminating and Electrical Installation Engineers, Vol. 24, No. 10, pp. 67-72.
  6. Kwon, Y. S., Lee, J. K., 2007, Development of Emission Factor of Greenhouse Gas(CO2) in Stationary Combustion Facilities Using Continuous Emission Monitoring System, Korean Society for Atmospheric Environment, pp. 99-101.