http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
소화 하수슬러지의 유동층 소각 ( 1 ) - 단단 유동층 소각특성 -
이제근,이기호,장정국,이남수,임종성,전해수 ( Jea Keun Lee,Ki Ho Lee,Jeong Gook Jang,Nam Soo Lee,Jong Sung Lim,Hai Soo Chun ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.2
Combustion characteristics of digested sewage sludges dried in ambient condition were measured in a laboratory scale fluidized bed incinerator. In spite of the low heating value(1050 ㎉/㎏) and the high moisture content(21%) of the sludge, steady state combustion could be obtained without addition of an auxiliary fuel. Addition of bed material was not needed in the experiment. The combustion efficiency was achieved over 94% due to the high combustion rate of the sludge in the freeboard. Emissions of NO_χ, and SO₂ranged 6.1-16.2 ppm and 830-1310 ppm, respectively, in given experimental conditions.
이제근,이기호,장정국,임준혁,임종성,전해수 ( Jea Keun Lee,Ki Ho Lee,Jeong Gook Jang,Jun Hyuck Lim,Jong Sung Lim,Hai Soo Chun ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.4
A series of experiments for incineration of digested sewage sludge in a laboratory scale two-stage swirl-flow fluidized bed incinerator are performed to obtain the combustion characteristics and the emission characteristics of gas pollutants. The results are compared with those obtained in the same size single-stage fluidized bed incinerator. Due to the swirling flow in the freeboard of upper stage, the combustible contents of the ash in the outflow streams are lower and freeboard temperature of the upper stage is higher than those of the single-stage fluidized bed incinerator. As a result, the combustion efficiency of the two-stage swirl-flow fluidized bed incinerator is higher than that of the single-stage fluidized bed incinerator under the same operating conditions. The range of NO_χ emission is as low as 13.9-20.4 ppm, however, the emission of SO₂ becomes as high as 1678-1931 ppm, which need to be controled to meet the emission standards.
고온 배가스 처리용 Lanthanoid계 Perovskite 형 촉매상에서 CO에 의한 NO<sub>x</sub>의 환원
이제근,이재희,임준혁,Lee, Jea-Keun,Lee, Jae-Hee,Lim, Jun-Heok 대한환경공학회 2000 대한환경공학회지 Vol.22 No.1
알루미나 상에 페롭스카이트 산화물 촉매를 구연산 용액에서 제조하였다. 고온 배가스 처리에 페롭스카이트 촉매의 적용가능성을 평가하기 위해 충진 촉매 반응기내에서 조업온도와 $CO/NO_x$ 몰비를 변화시키면서 CO에 의한 $NO_x$의 환원특성을 실험하였다. 본 연구에서 제조한 촉매를 분석한 결과 알루미나 상에 $La_{0.5}Sr_{0.5}CoO_3$, $SrAl_{12}O_{19}$, $LaAl_{11}O_{18}$의 복합산화물이 균일하게 분포되어 있음을 확인하였다. $CO/NO_x$ 몰비가 1보다 높은 조건에서 $NO_x$의 전환율은 온도가 높아짐에 따라 $700^{\circ}C$ 근방까지는 급격히 증가하였고, 그 이상에서는 100%에 근접하였다. 또한 조업온도 $800^{\circ}C$, 공간속도 $10700hr^{-1}$에서 23시간 연속조업한 결과 $NO_x$의 전환율은 98% 이상으로 유지됨을 확인할 수 있었다. Perovskite oxide catalysts doped on porous alumina beads are prepared in a citric acid solution. To investigate the applicability of the catalysts to the hot gas cleanup, a series of experiments on the reduction characteristics of $NO_x$ by CO as a reducing agent are carried out in a packed bed reactor containing the catalysts. Parameters tested are the operating temperature and $CO/NO_x$ molar ratio. It is found that mixed complex oxides of $La_{0.5}Sr_{0.5}CoO_3$, $SrAl_{12}O_{19}$ and $LaAl_{11}O_{18}$ are uniformly distributed on the alumina beads. The conversion efficiency of $NO_x$ by CO sharply increases with the operating temperature up to $700^{\circ}C$ and then approaches 100% when $CO/NO_x$ molar ratio is greater than 1.0. The conversion efficiency of $NO_x$ is maintained by over 98% during a continuous operation for 23 hours at $800^{\circ}C$ and space velocity of $10700hr^{-1}$.
이제근(Jea Keun Lee),고태훈(Tae Hoon Koh),사공명(Kong Myong Sa),이성진(Sung Jin Lee),이태윤(Tae Yoon Lee) 大韓環境工學會 2010 대한환경공학회지 Vol.32 No.7
본 연구는 화력발전소에서 발생한 바텀애쉬와 폐타이어를 성토재로 수용하기 전 환경에 미치는 영향을 파악하기 위해 수행되었다. 바텀애쉬에 대해서는 3가지 초기 pH 4, 6, and 8 조건에서 실험하였고, 폐타이어와 바팀애쉬·폐타이어 혼합물은 pH 4 조건에서 실험하였다. 7가지 중금속 중 Pb과 Zn이 먹는물 수질기준을 초과하였으나 I PVE안에 모두 기준을 만족하였다. 5가지 음이온 중 황산염의 농도만 기준치의 최대 10배 정도로 크게 검출이 되었으며 높은 분배계수로 인해 수질기준치 이하로 낮아지는 데 걸리는 시간도 최대 8. 21 PVE에 달하였다. 혼합물의 경우 바텀애쉬와 비교 시 중금속 및 음이온의 농도를 낮추었으며 요구되는 PVE도 8.21에서 5.89로 낮추는 효과가 있었다. The purpose of this study was to determine any detrimental effects on surrounding environments by using bottom ash, waste tire, and mixture as a fill material to raise the ground level. Three different initial pHs (4, 6, 8) were applied to bottom ash and initial pH of 4 was used to waste tire and mixture. Among 7 heavy metals, Pb and Zn were exceeded drinking water standards but their concentrations decreased below drinking water standards within 1 PVE. Among 5 anions, sulfate exceeded 10 times of drinking water standards and further higher partition coefficients resulted in increased PVE of 8.21. For the mixture of bottom ash and waste tire, its concentrations of heavy metals and anions were decreased due to the dilution effect and lowered PVE from 8.21 (BA) to 5.89.
전해수,이제근 ( Hai Soo Chun,Jea Keun Lee ) 한국화학공학회 1978 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.16 No.1
Fluid-solid fluidized bed reactors may be classified by various types according to kinds of contacting of solids by fluid, operating conditions, the dynamic behaviour of the solids, or the mode of solid movement(circulation). The fluid-solid fluidized system which belong to the first(kinds of contacting of solids by fluid) divide into two categories, so-called $quot;an aggregative fluidized bed, or a bubbling fluidized bed$quot; and $quot;a particulate fluidized bed, or a homogeneously fluidized bed$quot;. The former is industrial importance for many gas-solid reactions. Many two-phase reactor models have been proposed in. an effort to predict chemical conversions in aggregative fluidized beds(or gas-fluidized beds) . In this paper the assumptions underlying these models are considered, and it is show en their characteristics of some models. In recent years a considerable amount of work has been carried out on electrodepositions, batteries and preparations of chemicals using electrochemical fluidized bed reactors(fluidized bed electrode), one of particulate fluidized beds. It is consists of a bed of conducting particles fluidized by the upward flow of electrolyte through some form of distributor and all bed-particles act as an electrode. The basic principles of the fluidized bed electrode and their characteristics are also reviewed here.