• Title/Summary/Keyword: 연속식

Search Result 1,634, Processing Time 0.023 seconds

Review of Solid Propellant Continuous Mix Process (고체 추진제 연속식 혼화 공정 고찰)

  • Jung, Se-Yong;Won, Jong-Wan;Choi, Young-Seok;Hwang, Hyung-No;Yoo, Kyu-Chul
    • Proceedings of the Korean Society of Propulsion Engineers Conference
    • /
    • 2007.04a
    • /
    • pp.197-200
    • /
    • 2007
  • This paper presents solid propulsion manufacturing processes. Solid rocket motors propellants are made of several batches of propellant being mixed in mixers and made of continuous mixers. This paper discusses the technology of continuous mix process of Aerojet, US and SNPE Materiaux Energetiques, France.

  • PDF

Horizontal settler를 이용한 연속식 3단 향류추출공정에 의한 lincomycin의 추출

  • Lee, Mun-Yeong;Jeon, Gye-Taek;Jeong, Yong-Seop;Lee, Sang-Jong;Jeong, Yeon-Ho
    • 한국생물공학회:학술대회논문집
    • /
    • 2000.11a
    • /
    • pp.632-633
    • /
    • 2000
  • Lincomycin의 추출을 위한 최적용매 및 최적 추출조건을 조사하였고 회분식 다단 추출을 시도하는 한편, 연속식 3단 향류추출장치를 개발하여 lincomycin의 추출효율을 조사하였다. 연속식 3단 향류추출장치를 운전한 결과 회분식 추출과 마찬가지로 단수가 증가함에 따라 lincomycin의 추출효율이 증가함이 확인되었고, 3단을 거친 수용액상에서는 lincomycin이 거의 발견되지 않음이 확인되었다.

  • PDF

인터뷰 - "식음료산업에 최적인 연속식 잉크젯 기술 개발"

  • 조나리
    • The monthly packaging world
    • /
    • s.295
    • /
    • pp.87-89
    • /
    • 2017
  • 경쟁이 심화되고 있는 식품 및 음료시장에서 살아남기 위해 제조사들은 생산속도와 생산효율성 향상에 사활을 걸고 있다. 장비 고장으로 생산라인이 멈추게 되면 수익에 직접적인 타격을 줄 뿐만 아니라 회사 신뢰도에도 영향을 미칠 수 있다. 이 때문에 전체 장비 효율성에 대부분의 제조사들이 집중하고 있다. 미국의 인쇄 및 마킹 전문기업 Videojet은 최근 고객 피드백 연구에서 얻은 결과를 바탕으로 차세대 연속식 잉크젯 프린터 'Videojet 1860'을 선보였다. 특히 이 제품은 4차산업혁명에 발맞춰 IoT기술을 강화해 화제가 되고 있다. Videojet Technologies의 Anthony Blencowe 연속식 잉크젯 프린터 글로벌 사업부 이사와 최신 식음료시장의 트렌드와 포장 및 인쇄에 대한 이야기를 나눠봤다.

  • PDF

제주도 연안 갈치 채밖기의 연속식 자동어구 어법 개발 3. 연속식 채낚기 어구의 해상실험

  • 서익조;오승훈;이창헌;박용석;김석종;서두옥
    • Proceedings of the Korean Society of Fisheries Technology Conference
    • /
    • 2001.05a
    • /
    • pp.53-54
    • /
    • 2001
  • 제주도 연근해에서는 소형선박으로 수동식 채낚기 어구와 선상 집어등으로 갈치를 유집하여 어획하고 있다. 총톤수 10톤의 갈치 채낚기 어선에는 6명의 선원, 수입산 냉동미끼, 대출력의 선상 집어등 등 조업경비의 지출이 심하여 조업선원의 감소를 할 수 있는 연속식 채낚기 어구 개발, 대출력 선상 집어등을 소출력의 수면 집어등, 어육미끼를 인공미끼로 대체하는 것이 절실하게 요구되고 있다. (중략)

  • PDF

Study of Continuous Production of Alcohol using Biologically Sandwich-styled Immobilization Carrier (샌드위치식 고분자담체를 이용한 알코올 연속생산연구)

  • Park, Young-G.;Kim, Hee-Jung
    • KSBB Journal
    • /
    • v.23 no.3
    • /
    • pp.213-218
    • /
    • 2008
  • The present study was to investigate the continuous production of alcohol using immobilized carrier manufactured by polymeric materials. Fermentation runs with a crushed rice, with constituents recovered from batch culture and with ones from continuous culture were thus compared. The performances of immobilized carrier were governed by sandwitched synthetic polymers, the evolution of the continuous culture was steadily governed by the production of alcohol in the lag time of batch culture. The main focus was set on the enhancement of the alcohol production by an newly-developed polymeric forms. This polymeric form led to a drastic increase of the microorganism and the production cost in the continuous reactor was thereby reduced. The sandwitched polymeric-formed carrier, which was resistant to external environments, serves as an interesting alternative to maintain the stability of biological process. These whole results were discussed with the aim to better understand the continuous process implied in the microorganism's build-up during cultivation of fermentation broth.

Effect of Copper on the Suspended Growth Biological Wastewater Treatment (부유 성장식 생물학적 폐수처리에 미치는 구리의 영향)

  • Seo, Jeong-Beom;Hwang, Chang-Min
    • Journal of Korean Society of Environmental Engineers
    • /
    • v.35 no.7
    • /
    • pp.479-484
    • /
    • 2013
  • This study was performed to examine the effect of copper on the biodegradability, nitrification, denitrification and oxygen uptake rate (OUR) using batch reactor and continuous flow stirred tank reactor (CSTR) of anaerobic/anoxic/oxic ($A_2/O$). The results of this study can be summarized as follows. In the case of the effect of copper on organic treatment, the bad effect initiated when it was above 4.5 mg/L copper with batch reactor and above 2.0 mg/L copper with CSTR. Concerning the case on nitrification and removal of nitrogen, it showed bad effect when copper was above 4.5 mg/L with batch reactor for nitrification and 1.0 mg/L with CSTR for the removal of nitrogen. The bad effect on the removal of phosphorus began when it was 4.5 mg/L copper with batch reactor and 2 mg/L copper with CSTR. In the case of OUR, it decreased as microbial activity was affected when copper concentration was above 1.5 mg/L in both case of batch reactor and CSTR.

Effect of Zinc on the Suspended Growth Biological Wastewater Treatment (부유 성장식 생물학적 폐수처리에 미치는 아연의 영향)

  • Seo, Jeong-Beom;Hwang, Chang-Min
    • Journal of Korean Society of Environmental Engineers
    • /
    • v.37 no.4
    • /
    • pp.228-233
    • /
    • 2015
  • This study was performed to examine the effect of zinc on the biodegradability, nitrification, denitrification and oxygen uptake rate (OUR) using batch reactor and continuous flow stirred tank reactor (CSTR) of anaerobic/anoxic/oxic ($A^2/O$). The results of this study can be summarized as follows. In the case of the effect of zinc on organic treatment, zinc had no effect up to 12 mg/L with batch reactor but biodegradability was lowered when it was above 3.0 mg/L with CSTR. Concerning the case on nitrification and removal of nitrogen, nitrification rate was lowered when zinc was above 6.0 mg/L with batch reactor and removal rate of nitrogen was lowered when zinc was above 3.0 mg/L with CSTR. Removal rate of phosphorus was lowered when it was above 6.0 mg/L zinc with batch reactor and above 3.0 mg/L zinc with CSTR. In the case of OUR, it decreased as microbial activity was affected when zinc concentration was above 3.0 mg/L in CSTR.

숯을 이용한 농약 제거에 관한 연구

  • Lee, Seon-Hwa;Kim, Woo-Hang
    • Proceedings of KOSOMES biannual meeting
    • /
    • 2008.05a
    • /
    • pp.181-183
    • /
    • 2008
  • 본 연구는 회분식과 연속식으로 나누어 숯의 농약 흡착 능력을 평가하였다. 실험에 사용된 농약은 Simazine, Diazinon, Fenitrothion, Butachlor, Malathion이다. 회분식 실험 결과에 따르면, 흑탄과 백탄 양을 0.1g, 1g, 10g, 50g씩 증가시킬수록 농약 성분의 제거율이 높아지는 것으로 나타났으며, 흑탄이 백탄 보다 농약 성분을 잘 제거하는 것으로 나타났다. 특히, 1g 주입시 흑탄은 백탄보다 Malathion을 약 15%, Rutachlor을 약 19%, Fenitrothion을 약 25%씩 제거율이 더 높게 나타난 것으로 보아 흡착이 잘된다고 판단된다. 반면에 회분식에서 Diazinon의 제거율은 상대적으로 낮게 나타났나. 연속식 실험에서도 흑탄이 백탄보다 더 높은 제거율을 나타내었으며, 특히 흑탄 칼럼에서는 흡착 시간$(21\sim31hr)$에서 농약 성분의 평균 제거율을 비교해 본 결과, Simazine은 90%, Fenitrothion은 82%, Butachlor은 81%로 나타났으며, 특히 Diazinon의 제거율은 55%로 나타나 상대적으로 흡착이 잘 되지 않는 것으로 나타났다.

  • PDF

인터뷰 - "다양성은 연속식 잉크젯 프린터의 핵심"

  • Jo, Na-Ri
    • The monthly packaging world
    • /
    • s.307
    • /
    • pp.113-116
    • /
    • 2018
  • 과거 고객들은 연속식 잉크젯 프린터를 도입할 때에 구입비용에 중점을 뒀다. 그러나 최근에는 소모품을 포함한 유지비용까지 고려하는 것으로 소비패턴이 변화하고 있다. 총소유비용(Total cost of ownership, 이하 TCO)까지 따진 후에 구입하기 때문에 본체 가격이 저렴한 것은 큰 매력이 되지 못하고 있다. 이처럼 까다로운 소비자에게 다가가기 위해 잉크젯 프린터는 어떠한 기능을 갖춰야하는지, 비디오젯 테크노롤지의 Anthony Blencowe 연속식 잉크젯 프린터 글로벌 사업부 이사와 함께 잉크젯 프린터를 둘러싼 최신 트렌드에 관해 이야기해보았다.

  • PDF

Design of Recycle Bubble Column Reactor for Continuous Enzymatic Hydrolysis of Cellulose (섬유소의 연속 효소 가수분해를 위한 순환식 기포탑 반응기의 설계)

  • 김춘영;홍석표정봉우이태원
    • KSBB Journal
    • /
    • v.5 no.1
    • /
    • pp.59-67
    • /
    • 1990
  • Enzymatic hydrolysis of insoluble cellulose was performed in a bubble column with tangential flow ulrafiltration membrane unit. The reactor was operated in a batch mode as well as semi-continuous and continuous with continuous removal of products through the tangential flow ultrafiltration membrane. The optimum superficial gas velocity was 1-3cm / sec so as to avoid bubble coalescence and enzyme denaturation. In continuous and selni-cotinuous process, the conversion was gradually increased but the total reduced sugar concentration was drcastically dereased with the dilution rate. It was concluded that the bubble column attaching tangential flow ultrafiltration membrane unit was effective on continuous hydrolysis of cellulose and recovery of enzyme.

  • PDF