10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
Fine Particle Emission from Power Plants and Their Contribution to Air Quality in Korea
SUNGNAM CHUN, Suji Kang, Gayoung Lee, Korea Electric Power Corporation Research Institute, Korea
Abstract Number: 685 Working Group: Control and Mitigation
Abstract Now a day, the fine particle problem has become the most important air pollution issue in Korea. We occasionally experience the occurrence of high concentration events of particulate matter in the air that exceed the air quality standards during the spring season, and the Korean government is pushing various strict policies to reduce the emission of particulate matter. The goal of the Korean government is to low the fine particle concentration in the air by 30% in 2022 comparing with that of 2017. In Korea, the particulate matter is known to be contributed by the inflow of foreign countries and various domestic emission sources. Also it is considered that the contribution of power plants on fine particle concentration in Korea are approximately 4 % based on the 1st fine particles that are emitted as fine particles directly from stack and increase to 15 % including the second fine particles that are emitted as gaseous phase when these leave stack but converted to fine particles in the air through chemical reactions. Even though Korean government is trying to convert the energy portfolio from fossil to renewal energy era, until now more than 30 % of the electricity comes from fossil fuel sources, such as coal, oil and gas. Most of the fossil fuel used to make electricity is coal in Korea and demand of fine particle emission reduction is increasing.
This paper has summarized the assessment results of particulate emissions from Korean coal-burning power plant. We measured fine particle concentration in flue gas was measured using USEPA 201A and ISO 23210. We also measured the filterable particulate matter(FPM) and condensable particulate matter(FPM) and analyzed the chemical composition of particulate matter. The fraction of fine particulate matter to total particulate matter was assessed in coal-burning power plants. In addition, we reported the operating status of pollution control facilities, such as SCR, ESP, and FGD in a flue gas system from a boiler to a stack to assess the fine particle concentrations at each facilities and their fine particle removal efficiency.
To assess the contribution of power plants to the fine particulate matter concentration in the air, the background concentration monitoring station was constructed and we compared the concentration data obtained at the station with the measurement data obtained near the power plant. The fine particulate specimens which was collected at the back ground monitoring site and near the power plants were analyzed to assess chemical composition and we developed to assess the emission source apportionment.
In order to improve the air quality especially fine particulate matter concentration in Korea by reducing particulate matter emissions from various sources, it is necessary to identify the target sources and understand their emission characteristics. And it is also necessary to apply appropriate control technology to the emission sources. The data presented in this paper are considered to provide important information in establishing a control strategy for power plants as a large scale emission source to mitigate the fine particulate matter emission.