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톨루엔의 스팀 및 자열개질을 위한 Ni계 촉매의 특성 평가
김효식(Hyo Sik Kim),김진호(Jin-Ho Kim),류재홍(Jae-Hong Ryu),홍범의(Bumui Hong),강석환(Suk-Hwan Kang),박노국(No-Kuk park),우광재(Kwang-Jae Woo) 한국에너지기후변화학회 2018 에너지기후변화학회지 Vol.13 No.2
VOCs (volatile organic compounds) are the most common pollutants emitted from chemical plants and cause photochemical reactions in the atmosphere to produce ozone and photochemical oxidants that cause smog. In our project, there were carried out the syngas production by the reforming reaction using catalysts after adsorption and condensation steps to energize VOCs. In generally, the steam reforming reaction is an endothermic reaction, and so the heat source must be supplied from the outside. However, in order to reduce the amount of the external heat source, the reforming reaction can be performed by adding air or oxygen to the reactor similar to auto-thermal reforming reaction. Therefore, in this study, the steam reforming of liquid hydrocarbons such as toluene was carried out by using nickel-based catalysts in order to use the produced syngas as fuel for a gas engine. Additionally, the effect of oxygen supply on the efficiency of the reformer and the composition of syngas is examined.
공공하수처리시설의 에너지절감 및 폐슬러지 저감에 관한 실증연구
강석환(Suk-Hwan Kang),김효식(Hyo Sik Kim),우광재(Kwang-Jae Woo),강줄기(Jul-Ki Kang),김동욱(Dong-Wook Kim),이수진(Su-Jin Lee) 한국에너지기후변화학회 2014 에너지기후변화학회지 Vol.9 No.2
An empirical study on the energy saving and waste-sludge reduction by using ultra-fine bubbles was demonstrated in a public sewage treatment plant. The test-bed of 100m3/day capacity was installed and operated with the ultra-fine bubbles of μm-size for aeration and sludge reduction tools. The rate of aeration-energy saving by using ultra-fine bubbles was 37% compared to that of conventional diffuser, and the rate of excess-sludge reduction by using the ultra-fine bubbles of air+10%O₃ was 31% for 1-day operation and was 45% for 2-day operation. We could conclude that the ultra-fine bubbles might have a powerful potential for the energy saving and sludge reduction in sewage and waste-water treatment processes.
김효식(Hyo-Sik Kim),김진호(Jin-Ho Kim),류재홍(Jae-Hong Ryu),강석환(Suk-Hwan Kang),김태훈(Tae-Hoon Kim),박노국(No-Kuk Park),우광재(Kwang-Jae Woo) 한국에너지기후변화학회 2017 에너지기후변화학회지 Vol.12 No.1
SOx generated in the combustion process of sulfur-containing fuel was regulated globally along with NOx, CO, fine dust, etc. Currently, processes for SOx removal in flue gas were mainly used the wet methods in a variety of industries. On the other hand, the dry methods has not yet been developed with commercial technology, although it has the advantage of removing SOx in flue gas through physical or chemical adsorption over a wide temperature range. In this paper, the operation or regeneration temperature of the sorbents (such as single oxides, oxides supported on carbonaceous materials, oxides supported on zeolites and mesoporous materials) in the dry methods for removing SOx and the future research direction of this field are summarized.
김진호(Jin Ho Kim),김효식(Hyo Sik Kim),류재홍(Jae-Hong Ryu),강석환(Suk-Hwan Kang),김준우(Joon Woo Kim),박노국(No-Kuk Park),성대진(Dae-Jin Sung),우광재(Kwang-Jae Woo) 한국에너지기후변화학회 2016 에너지기후변화학회지 Vol.11 No.2
Petroleum coke (petcoke) as a by-product of petroleum refining used in various industrial fields because of inexpensive and high caloric value, but it contains high-sulfur. Petcoke can have a competitive price by removing the sulfur components and can be utilized in more various fields. In this work, various techniques to remove the sulfur in the petcoke were introduced. In addition, we propose an economic method to remove the sulfur.