• Title/Summary/Keyword: 파일럿 규모

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A Study on the Distribution of Hydraulic Head Along the Lateral in a Pilot-Scale Riverbank Filtration (강변여과에서 파일럿규모 수평집수관의 수두분포 연구)

  • Jeong, Jae-Min;Park, Jae-Young;Lee, Jong-Jin;Kim, Yong-Woon;Kim, Seung-Hyun
    • Journal of Korean Society of Environmental Engineers
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    • v.35 no.5
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    • pp.334-339
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    • 2013
  • A pilot-scale sand-box experiment simulating a lateral of collector well used in riverbank filtration was performed, and hydraulic head distributions along the lateral were measured according to the various drawdowns at the well. The results of this experiment were compared to the predicted values obtained using a theory previously developed by Kim in order for its validation. This theory predicts the head loss in a large-scale lateral given the loss in a small-scale one, and to have actual values for comparison, the results from a lab-scale experiment previously performed by Kim were employed. Comparing the experimental values to the extrapolated value indeed confirmed the validity of the theory. A procedure to determine the hydraulic head distribution of a practical-scale lateral was also presented applying the theory to the experimental result of this study in an effort to show the process of lateral design for riverbank filtration.

A Pilot Study on the Building a Digital Twin Platform for Nuclear Plant (디지털 트윈 플랫폼 구축을 위한 가동원전 파일럿 연구)

  • Choi, Doo-Chan;Kim, Sang-Il;Son, Eun-soo;Kim, Jun-soo
    • Proceedings of the Korean Society of Disaster Information Conference
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    • 2023.11a
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    • pp.81-82
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    • 2023
  • 디지털 트윈 플랫폼을 적용하여 가동원전의 화재 안전성을 강화시키고자 한다. 원전에 특화된 화재 감지, 진압 설비를 개발하면서 디지털 트윈에 적용하기 위하여 수집해야 할 데이터에 대한 연구를 수행하고 있다. 본 연구에 대해서 원전에 특화된 공기흡입형 감지모듈과 미분무 소화설비를 개발하고 있으며 제품에 대한 DB를 구축하여 디지털 트윈에 적용시키고자 유니티(Unity) 툴을 이용하여 파일럿 규모의 전기실 화재에 대한 모델링을 수행하였다. 추후 실규모의 소방 시스템을 제작하고 적용 가능한 센서를 통해 데이터를 수집할 것이며, 이를 통해 디지털 트윈 플랫폼을 구축하여 CDF 저감에 기여할 것으로 기대된다.

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Treatment of Spent ion-Exchange Resins from NPP by Supercritical Water Oxidation(SCWO) Process (초임계수 산화공정에 의한 원전 폐수지 처리기술)

  • Kim, Kyeong-Sook;Son, Soon-Hwan;Song, Kyu-Min;Han, Joo-Hee;Han, Kee-Do;Do, Seung-Hoe
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.7 no.3
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    • pp.175-182
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    • 2009
  • The spent cationic exchange resins and anionic exchange resins were separated from mixed spent exchange resins by a fluidized bed gravimetric separator. The separated resins were identified by an elemental analysis and thermogravimetric analysis. The each test sample was prepared by diluting the slurry made by wet ball milling the cationic exchange resins and the anionic exchange resins separated as a spherical granular form for 24 hours. The resulting test samples showed a slurry form of less than $75{\mu}m$ of particle size and 25,000ppm of $COD_{cr}$. The decomposition conditions of each test samples from a thermal power plant were obtained with a lab-scale(reactor volume : 220mL) supercritical water oxidation(SCWO) facility. Then pilot plant(reactor volume : 24 L) tests were performed with the test samples from a thermal power plant and a nuclear power plant successively. Based on the optimal decomposition conditions and the operation experiences by lab-scale facility and the pilot plant, a commercial plant(capacity : 150kg/h) can be installed in a nuclear power plant was designed.

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Performance Characteristics of a Hybrid Particulate Collector (하이브리드 집진장치의 성능 특성)

  • 최호경;이시훈;김상도;박영옥
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.11a
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    • pp.493-494
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    • 2003
  • 본 연구에서는 전기집진 기술과 여과집진 기술의 조합에 의한 먼지입자의 포집성능 상승효과를 최대한 높일 수 있는 먼지부하 저감형 하이브리드 집진장치(Hi-Filter)를 개발하기 위한 연구의 일환으로 파일럿 규모의 실험장치에서 운전 조건을 변화시키면서 장시간 실험을 통해 집진성능 특성 변화를 고찰한다. (중략)

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Recovery of Iron-Nickel Alloy Etching Waste Solution in Pilot Scale (파일럿 규모에서 철-니켈 합금 에칭폐액 재생)

  • Chae, Byungman;Kim, Dae-Weon;Hwang, Sung-Ok;Kim, Deukhyeon;Lee, Sangwoo
    • Clean Technology
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    • v.23 no.4
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    • pp.393-400
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    • 2017
  • In this study, we have developed a process for separating and recovering Ni and Fe in solution through a new solvent instead of TBP and Alamine336, which are solvents used in the conventional solvent extraction method. Experimental conditions were optimized through lab test and a $10L\;h^{-1}$ pilot plant was constructed for commercialization. In addition, the process data for mass production were obtained through pilot experiment and it was confirmed that there is no problem in product quality that can be used through the corrosion test of ferric chloride.

Synthesis of Water-soluble Fiber using Carboxymethylcellulose(CMC) and Development of Pilot Plant (카르복시메틸셀룰로오스 제조공정을 이용한 수용성 섬유 제조 및 파일럿 플랜트 개발)

  • Song, Ho-Jun;Lee, Seungmoon;Choi, Youngmin;Chung, Eui-Hyun;Maken, Sanjeev;Park, Jin-Won
    • Clean Technology
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    • v.11 no.4
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    • pp.189-194
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    • 2005
  • Carboxymethylcellulose(CMC) which is water-soluble fiber was manufactured by mercerization and etherification in the earlier study. Experimental parameters were conversion time for each step, concentration of reagent and temperature. To know the presence of functional group, CMC was analyzed by FT-IR(Fourier Transform Infrared) spectroscopy. Ethanol was recovered using evaporator and purity of ethanol analyzed by GC-MASS was 97% and 83% after mercerization and etherification respectively. For the pilot plant, if CMC is folded by 40 times it showed maximum efficiency. Maximum solubility was obtained when the ratio of NaOH and MCA is 3 : 4.5.

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Ecotoxicity Assessment for Livestock Waste Water Treated by a Low Impact Development(LID) Pilot Plant (파일럿 규모의 LID공법을 적용한 축산폐수 처리수에 대한 생태독성 평가)

  • Park, Da Kyung;Chang, Soon-Woong;Choi, Hanna
    • Korean Journal of Environmental Biology
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    • v.35 no.4
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    • pp.662-669
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    • 2017
  • This study evaluated the ecotoxicological properties of livestock waste water treated by a LID (Low Impact Development) system, using a mixture of bio-reeds and bio-ceramics as suitable bed media for a subsequent treatment process of a livestock wastewater treatment plant. The relationship between the pollutant reduction rate and the ecotoxicity was analyzed with the effluents from the inlet pilot plant, with vegetated swale and wetlands and the batch type of an infiltration trench. Each pilot plant consisted of a bio process using bio-reeds and bio-ceramics as bed media, as well as a general process using general reeds and a bed as a control group. The results indicated that, after applying the HRT 24 hour LID method, the ecotoxicity was considerably lowered and the batch type pilot plant was shown to be effective for toxicity reduction. The LID method is expected to be effective for water quality management, considering ecotoxicity by not only as a nonpoint source pollution abatement facility but also, as a subsequent treatment process linked with a livestock manure purification facility. It is necessary to take the LID technic optimization study further to apply it as a subsequent process for livestock wastewater treatment.

Practical Study of Low-temperature Vacuum Swing Adsorption Process for VOCs Removal (휘발성 유기화합물 제거를 위한 저온 vacuum swing adsorption 공정의 실용화 연구)

  • Jeon, Mi-Jin;Pak, Seo-Hyun;Lee, Hyung-Don;Jeon, Yong-Woo
    • Applied Chemistry for Engineering
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    • v.28 no.3
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    • pp.332-338
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    • 2017
  • The objective of this work was to study the low temperature vacuum adsorption technology applicable to small and medium scale painting plants, which is the main emission source of volatile organic compounds. The low-temperature vacuum swing adsorption (VSA) technology is the way that the adsorbates are removed by reducing pressure at low temperature ($60{\sim}90^{\circ}C$) to compensate disadvantages of the existing thermal swing adsorption (TSA) technology. Commercial activated carbon was used and the absorption and desorption characteristics of toluene, a representative VOCs, were tested on a lab scale. Also based on the lab scale experimental results, a $30m^3min^{-1}$ VSA system was designed and applied to the actual painting factory to assess the applicability of the VSA system in the field. As a result of lab scale experiments, a 2 mm pellet type activated carbon showed higher toluene adsorption capacity than that of using 4 mm pellet type, and was used in a practical scale VSA system. Optimum conditions for desorption experiments were $80{\sim}90^{\circ}C$ and 100 torr. In the practical scale system, the adsorption/desorption cycles were repeated 95 times. As a result, VOCs discharged from the painting factory can be effectively removed upto 98% or more even after repeated adsorption/desorption cycles when using VSA technology indicating potential field applicabilities.

SNG Production from CO2-Rich Syngas in a Pilot Scale SNG Process (파일럿 규모의 공정에서 CO2가 함유된 합성가스로부터 합성천연가스(SNG) 생산)

  • Kang, Suk-Hwan;Ryu, Jae-Hong;Kim, Jin-Ho;Kim, Hyo-Sik;Yoo, Young-Don;Kim, Jun-Woo;Koh, Dong-Jun;Kang, Yong
    • Korean Chemical Engineering Research
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    • v.57 no.3
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    • pp.420-424
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    • 2019
  • In SNG (synthetic natural gas) process by proposed RIST(Research Institute of Industrial Science & Technology)-IAE(Institute for Advanced Engineering) (including three adiabatic reactors and one isothermal reactor), the methanation reaction and water gas shift (WGS) reaction take place simultaneously, and the supply of steam with syngas might control the temperature in catalyst bed and deactivate the catalyst. In this study for development of SNG process, the characteristics of the methanation reaction with a Ni-based catalyst by prepared RIST and using a low $H_2/CO$ mole ratio (including $CO_2$ 22%) are evaluated. The operating conditions ($H_2O/CO$ ratio of the $1^{st}$ adiabatic reactor, operating temperature range of $4^{th}$ isothermal reactor, etc.) were reflected the results from previous studies and in the same condition a pilot scale SNG process is carried out. As a results, the pilot scale SNG process is stable and the CO conversion and $CH_4$ selectivity are 100% and 96.9%, respectively, while the maximum $CH_4$ productivity is $660ml/g_{cat}{\cdot}h$.

연구개발망의 동향 분석과 BcN 연구시험망의 구축 및 시험

  • 이재기;이재정;민석홍;유한양;김태원;남상식
    • The Magazine of the IEIE
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    • v.31 no.7
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    • pp.26-42
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    • 2004
  • 선도시험망(Advanced Network) 또는 연구개발망(R&D Network: Research and Development Network)이라고 불리는 연구망은 상용망에 적용하기 이전의 장비 및 서비스에 대한 시험, 검증을 하기 위한 파일럿(pilot) 망으로서 일반 상용망에 비해 높은 대역폭이 제공되고 한정된 사용자에게 특수 목적을 위해 제공되는 첨단망을 의미한다. 특히 상용망에서 안정적으로 장기간수행하기 힘든 대규모의 정보교류나 실시간 공동참여를 가능하게 하는 연구전용 인프라(R&D infra)라고 할 수 있다. (중략)

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