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김광득,Naim Hasolli,이강산,이재랑,박영옥 한국대기환경학회 2019 한국대기환경학회지 Vol.35 No.2
Fugitive fine coal particulate is emitted from fuel coal transportation and handling plants at coal fired power plants. Fine coal particulate is emitted as result of the coal processing before feeding it to the combustor for generation of steam. Other particles such as bottom ash and fly ash are emitted from coal combutors. Most of coal fired power plants are applying various technologies, bag filtration and wet scrubbing, to remove the fugitive fine coal particulates. A two-stage vortex scrubber is proposed in this paper. Tests were performed by injecting fly ash particles as a test dust. The vortex scrubber was operated in two modes: no-drain and continuous water drain mode. The system pressure drop was controlled using a flow control unit to operate the scrubber at certain test parameters. The inlet particle concentration maintained at three levels of 0.17, 0.23 and 0.33 g/m3. The particle concentrations were measured at the inlet and outlet of the scrubber. The results shown the high particle collection effieicies with 83.6% for PM1, 97.6% for PM2.5 and 99.1% for PM10 at pressure drop of 230 mmAq and operated in the continuous water drain mode. For the purpose of water-air interface visualization, computational fluid dynamics (CFD) tool Fluent was used. Integral module of the Fluent, called Volume of Fluid (VoF), was used to simulate the two phase system in the water batch drain operation mode.
식 분류유동반응장치에서 고활성 반응제의 폐기물 소각배가스 중에 함유된 유해 산성가스 제거성능 특성
김광득,한재원,이재랑,이강산,하솔리나임,박영옥 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
폐기물 폐기물소각 설비, 석탄화력발전소 및 제철공장의 소결공정에서 배출하는 배가중에는 유해 산성가스(SO<sub>2</sub>, SO<sub>3</sub>, HF, HCl 등)가 높은 농도로 함유되어 있어 이러한 가스상 물질들은 모두 제거하여야 함. 이와 같은 가스상 대기오염물질을 제거하기 위해 석탄화력발전소의 경우는 습식탈황설비, 폐기물 소각설비에서는 습식 또는 반건식 반응설비 및 소결공장에서는 중조의 배관 주입 등을 적용하여 제거하고 있음. 그러나 습식 또는 반건식 산성가스 제거설비의 경우는 폐수처리 문제, 처리설비의 부식문제, 산성가스와의 반응한 반응물의 설비 벽면 부착으로 주기적인 제거작업 등의 많은 문제가 있는 처리기술임. 따라서 본 연구에서는 이와 같은 문제점을 해결하는 방법으로 건식 산성가스 처리설비인 건식 분류유동반응장치에 고활성 반응제를 적용하여 산성가스 제거성능 특성을 고찰하였음.
김광득,전성민,Naim Hasolli,이강산,이재랑,한재원,김희택,박영옥 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.3
A dry-type reactor was used to reduce the HCl emitted from a municipal waste incinerator. A real-scale reactor was installed downstream of the existing semi-dry reactor (SDR) as part of D local incineration plant, whose HCl removal efficiency was investigated by applying calcium hydroxide (Ca(OH)2). A test dry-type sorbent reaction accelerator (SRx) was designed, and the stoichiometric ratio (SR) of the sorbent and the secondary reaction characteristics of unreacted Ca(OH)2 in a baghouse were analyzed. For the results, the SRx showed higher HCl removal efficiency and more economic benefits than the other existing flue gas treatment facilities of the incinerator plant. Furthermore, the highest reduction efficiency of HCl was obtained when the differential pressure in the baghouse was maintained at 150mmH2O. This is because as the unreacted sorbent attached to the filter surface layer became thicker and the secondary reaction of the HCl removal increased.