• 자원리싸이클링
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• 제15권6호
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• pp.16-24
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• 2006

본 연구에서는 소각비산재의 습식 처리에 관한 기초 자료를 얻을 목적으로 소각비산재의 물성, 황산에 의한 소각비산재의 중화과정, 황산에 의한 소각비산재의 탈염소 반응, 소각비산재와 황산의 반응에 의하여 생성한 이수석고의 결정성장 및 미립 중금속의 분리 둥에 관하여 조사하였다. 소각비산재와 황산을 반응시켜 염산을 회수하고 그 잔류물의 대부분을 차지하는 석고 성분을 선택적으로 결정성장 시켜 결정성이수석고와 중금속으로 분리하는 일련의 공정에서 100g의 소각비산재위 85g의 진한 황산을 사용하는 경우 35% 염산 52.6g, 순도가 98%이상인 결정질 이수석고 116.9g을 회수할 수 있으며, 이 과정에서 2.65g의 활성탄을 주로하는 조립불순물과 7.85g의 중금속함유 미립자들이 분리되었다.

• 청정기술
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• 제2권2호
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• pp.100-125
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• 1996

After recycle of spent materials has been optimised, there remains a proportion of waste which must be dealt with in the most environmentally friendly manner available. For materials such as municipal waste, clinical waste, toxic waste and special wastes such as tyres, incineration is often the most appropriate technology. The study of incineration must take a process system approach covering the following aspects: ${\bullet}$ Collection and blending of waste, ${\bullet}$ The two stage combustion process, ${\bullet}$ Quenching, scrubbing and polishing of the flue gases, ${\bullet}$ Dispersion of the flue gases and disposal of any solid or liquid effluent. The design of furnaces for the burning of a bed of material is being hampered by lack of an accurate mathematical model of the process and some semi-empirical correlations have to be used at present. The prediction of the incinerator gas phase flow is in a more advanced stage of development using computational fluid dynamics (CFD) analysis, although further validation data is still required. Unfortunately, it is not possible to scale down many aspects of waste incineration and tests on full scale incinerators are essencial. Thanks to a close relationship between SUWIC and Sheffield Heat&Power Ltd., an extended research programme has been carried out ar the Bernard Road Incinerator plant in Sheffield. This plant consists of two Municipal(35 MW) and two Clinical (5MW) Waste Incinerators which provide district heating for a large part of city. The heat is distributed as hot water to commercial, domestic ( >5000 dwelling) and industrial buildings through 30km of 14" pipes plus a smaller pipe distribution system. To improve the economics, a 6 MW generator is now being added to the system.

• 공업화학
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• 제8권5호
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• pp.790-795
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• 1997

일반적으로 독성물질의 전형으로 알려진 다이옥신은 다양한 경로로 발생하여 인간과 환경에 유입되지만 대부분은 연소과정에서 발생된다. 본 실험에서는 EPA 방법에 의해 쓰레기 소각 처리후 생성된 폐가스와 비산재에 함유된 다이옥신류의 분포형태를 조사하고, 보다 효율적인 시료채취와 전처리 방법을 살펴보았다. 가스시료는 등속흡인하여 포집하였으며, 전 처리시 고체, 액체시료는 각각 속실렛과 액-액 추출법으로 추출하고 실리카겔, 알루미나, 활성탄 칼럼으로 정제한 후 고분해능 가스크로마토그래피/질량분석기(HRGC/H-RMS)로 분석하였다. 굴뚝 배출가스의 등속흡인결과 상대오차율이 평균 96.5%로서 안정적으로 시료가 흡인되었음을 확인하였으며, 폐가스와 비산재에서 측정된 다이옥신과 퓨란류는 선진국과 유사한 패턴을 나타냈다. 굴뚝 배출가스중 다이옥신과 퓨랸의 양은 각각 $1076.20pg/Nm^3$과 $1452.34pg/Nm^3$으로 나타났다. 주로 염소원자 7~8개로 치환된 이성체가 많았으며, 독성이 가장 강한 2,3,7,8-TCDD는 $8.84pg/Nm^3$으로서 전체 양의 0.64%를 차지해 비교적 낮게 확인되었다.

• 한국환경과학회지
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• 제12권7호
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• pp.809-816
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• 2003

The short-term version of Industrial Source Complex Model(ISCST3) was evaluated for estimating short-term concentrations using criteria pollutant(SO$_2$, NO$_2$, CO, PM10) data from emission inventory of Young Tong area in Suwon for the year 2002. The contribution of pollutant concentration from point, line, area sources was found 21.8, 76.5 and 1.6%. Statistical parameters, such as correlation coefficient, index of agreement(IA), normalized mean square error(NMSE) and fractional bias(FB) were calculated for each pollutants. The model performance were found good for PM10(82%) and NO$_2$(69%), but poor for SO$_2$(34%) and CO(13%).

• 한국연소학회:학술대회논문집
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• 한국연소학회 2012년도 제45회 KOSCO SYMPOSIUM 초록집
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• pp.79-82
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• 2012

The gas-solid reactor, such as rotary kiln, sintering bed, incinerator and CFB boiler, is the one of most widely used industrial reactors for contacting gases and solids. the gas-solid reactor are mainly used for drying, calcining and reducing solid materials. In the gas-solid reactor, heat is supplied to the outside of the wall or inside of the reactor. The heat transfer in gas-solid reactor encompasses all the modes of transport mechanisms, that is, conduction, convection and radiation. The chemical reactions occurring in the bed are driven by energy supplied by the heat transfer. This paper deal with the effect of heat transfer and chemical reaction in the gas-solid reactor.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 C
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• pp.1276-1278
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• 1999

This paper proposed the optimal operational scheduling of cogeneration system for paper mill connected with several auxiliary devices. Auxiliary devices that include auxiliary boiler, waste boiler and sludge incinerator operate with multi-cogeneration system. Especially environment element was considered in objective function to solve environment problem. Electricity can be purchased through power system from utility. The proposed operational strategy on cogeneration system for paper mill to increase energy efficiency can be applied to the similar cogeneration system in industrial field.

• 한국대기환경학회지
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• 제31권6호
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• pp.520-529
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• 2015

The ambient $PM_{2.5}$ samples were collected by $PM_{2.5}$ sampler from September 2010 to December 2012 at Daegu University, Gyeongsan. A total of 260 samples were collected and 27 species were analyzed by inductively coupled plasma, ion chromatography, and thermal optical reflectance methods. Factor analysis identified four sources such as biomass burning source/secondary aerosol source, soil source, industry source, and incinerator source/mobile source. Also, backward trajectories were calculated using HYSPLIT 4 (Hybrid single-particle lagrangian integrated trajectory) model and PSCF (Potential source contribution function) model was applied to identify the possible source locations of carbonaceous species and water soluble ions species. PSCF results showed that the possible source locations of most chemical constituents measured in Gyeongsan were the industrial areas in the eastern coast of China, northeast regions of China, the Gobi Desert, and east sea of Korea.

• 한국대기환경학회지
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• 제12권4호
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• pp.479-485
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• 1996

Volatile organic compounds are air pollutants exhausting from industrial process, evaporation of solvent, and so on. Most of VOCs are the combustible gas of low calorific value as it is diluted by air. The systems burning such a hazardous gas need to increase enthalpy in order to increase flame stability. In this study an incinerator with reciprocating flow in the honeycomb ceramic has been used for the experiment of VOCs control. By the reciprocating flow system, the enthalpy of combustion gas is effectively regenerated into the enthalpy increases of the combustible gas through the honeycomb ceramic, which provides a heat storage. The position of the reaction zone is strongly dependent on the parameters of mixture velocity and time frequency. Flame front is changed to the point where burning velocity is coincided with burning velocity in the honeycomb ceramic. In this system it is important that flame front should be located symmetrically at the center of honeycomb ceramic for the purpose of increasing the reaction rate at one point. Peak temperature becomes higher with decreasing time frequency, at which the flow direction is regularly reversed.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2009년도 추계학술발표논문집
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• pp.1046-1049
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• 2009

최근 화석에너지 고갈 문제와 폐기물의 지속적인 발생량 증가로 인해 폐기물을 이용한 열에너지 회수가 이슈화 되고 있다. 폐기물처리를 통한 에너지 회수 공정 가운데 소각이 가장 많이 이용되고 있으나 소각시 발생하는 대기오염 물질을 처리하기 위한 설계 및 설치비용에 많이 소요 된다. 본 연구에서는 화학공정 모사기인 Aspen plus를 이용해 소각공정 및 배가스 처리 공정모사를 실시하였다. 폐기물 소각 공정으로는 1 2차 연소실과 NO2를 환원하는 SNCR공정, 산성가스(HCl, SO2)를 제거하는 SDA공정, 입자상 물질을 처리 하는 bag filter공정을 모사하였다. 공정모사 결과 실제 산업폐기물 소각로의 처리효율과 일치 하였고 이를 바탕으로 동일한 공정 및 조건하에 소각로에 투입되는 폐기물의 조성비를 달리하여 공정 모사한 결과 오염물질의 배출량을 예측할 수 있었다. 이러한 오염물질 발생량 예측은 소각장의 폐기물 투입이 일정하지 않을 경우 조업 조건의 변경에 도움 뿐만아니라 공정개선의 효과적일 것으로 판단된다.

• 한국대기환경학회지
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• 제23권6호
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• pp.734-743
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• 2007

Polyurethane foam-disk passive air samplers (PAS) were deployed in a southern area of Korea for three months. The target compounds were 12 coplanar polychlorinated biphenyls (PCBs). The congener profiles measured in this study were the same as those in ambient air and emission gas from the incinerator. A gradient of the total PCBs in different regions (industrial>residential>rural) was observed, suggesting the industrial complex may be an important source of coplanar PCBs. In general, only gas-phase compounds are mainly sequestrated by PAS. In order to estimate the concentration of particle-phase PCBs, a gas/particle partition model was used. A combined result (gas+particle-phase PCBs) was compared with previous results, indicating that the level of coplanar PCBs in our study area is comparable to those in other urban sites in the world. The validation of this method for estimating the total concentration is required through additional backup studies.