• 제목/요약/키워드: 순산도

검색결과 165건 처리시간 0.026초

통순산(通順散)을 투여한 압박골절(壓迫骨折)환자 치험 3례 (A Case Report of Prescribing Tong shun-san for Three Patients with Compression Fracture)

  • 한상욱;정영훈;김정원;김주영;엄봉군;이차로;이재영
    • 척추신경추나의학회지
    • /
    • 제6권2호
    • /
    • pp.145-154
    • /
    • 2011
  • 압박골절로 인하여 거동이 불편한 요통 환자에게 담음(痰飮)으로 인한 근골격계 질환에 다용(多用)하는 통순산(通順散)을 처방하여 호전된 결과를 얻었다. 이에 저자는 압박골절 환자에 통순산(通順散)을 투여하여 호전된 3례를 보고하는 바이다.

  • PDF

순환 유동층 보일러와 초초임계 증기 사이클을 이용한 500 MWe급 순산소 화력발전소의 건식 재순환 흐름의 열 교환 및 경제성 분석 (Heat Integration and Economic Analysis of Dry Flue Gas Recirculation in a 500 MWe Oxy-coal Circulating Fluidized-bed (CFB) Power Plant with Ultra-supercritical Steam Cycle)

  • 김세미;임영일
    • Korean Chemical Engineering Research
    • /
    • 제59권1호
    • /
    • pp.60-67
    • /
    • 2021
  • 본 연구에서는 CO2 포집을 포함하는 500 MWe 급 전기를 생산하는 순산소 석탄화력발전소에 대한 공정흐름도를 제시하였고, 기술경제성 평가를 수행하였다. 이 석탄화력발전소는 순환 유동층 보일러(CFB), 초초 임계 증기 사이클 증기 터빈, 보일러에서 배출되는 배기가스내 수분과 오염물질을 제거하는 배기가스 정제 장치(FGC), 산소 분리 초저온 공정(ASU), 이산화탄소를 분리하는 극저온 공정(CPU)을 포함한다. 건식 배기가스 재순환(FGR)은 CFB연소기내 온도 제어와 고농도 CO2 배출을 위하여 사용되었다. 이 순산소 석탄화력발전소의 열효율을 증가시키기 위하여 FGR 흐름에 대한 열교환, ASU에서 배출되는 질소 흐름에 대한 열교환, 그리고 CPU 내 기체 압축기의 열 회수를 고려하였다. FGR열교환기의 온도차(ΔT)의 감소는 배기가스의 더 많은 폐열 회수를 의미하며, 전기 및 엑서지 효율을 증가시켰다. FGR열교환기의 ΔT가 10 ℃ 에서 FGR과 FGC 주변의 연간 비용이 최소가 되었다. 이때, 전기 효율은 39%, 총투자비는 1371 M$, 총생산비용은 90 M$, 그리고 투자수익률은 7%/y, 그리고 투자회수기간은 12년으로 예측되었다. 본 연구를 통하여 순산소 석탄화력발전소의 열효율 향상을 위한 열교환망이 제시되었고, FGR 열교환기의 최적 운전 조건이 도출되었다.

순산소 Jet 폭기 시스템을 이용한 음폐수 처리 특성 (Treatment of Food Waste Leachate using Pure-Oxygen Jet Loop Reactor(JLR))

  • 윤애화;박노백;배종훈;전항배;권영배
    • 상하수도학회지
    • /
    • 제24권6호
    • /
    • pp.763-773
    • /
    • 2010
  • The removal efficiencies and a total oxygen transfer coefficient for food waste leachate(FWL) were estimated by using Jet Loop Reactor(JLR). Pure oxygen was used instead of air to improve oxygen concentration in the JLR for high total chemical oxygen demamd(TCOD) in FWL. In JLB, in order to examining the oxygen transfer characteristic, the circulation flowrate and oxygen flowrate were controlled with 7~10 L/min(1.5 L/min interval) and 0.2~0.5 L/min (0.1 L/min interval) and we experimented according to the each condition. As a result, Oxygen uptake rate(OUR) and oxygen transfer rate could be maximized than the oxygen flowrate to increase the circulation flowrate. In addition, it determined that JLR using the pure oxygen which can obtain the greatest oxygen transfer rate as it was the high-concentration organic wastewater like the food waste leachate through the continuous experiment was appropriate.

배열회수형 순산소연소 발전시스템의 성능해석: CO2 포집의 영향 (Performance Analysis of an Oxy-fuel Combustion Power Generation System Based on Waste Heat Recovery: Influence of CO2 Capture)

  • 탁상현;박성구;김동섭;손정락;이영덕
    • 대한기계학회논문집B
    • /
    • 제33권12호
    • /
    • pp.968-976
    • /
    • 2009
  • As the global warming becomes a serious environmental problem, studies of reducing $CO_2$ emission in power generation area are in progress all over the world. One of the carbon capture and storage(CCS) technologies is known as oxy-fuel combustion power generation system. In the oxy-fuel combustion system, the exhaust gas is mainly composed of $CO_2$ and $H_2O$. Thus, high-purity $CO_2$ can be obtained after a proper $H_2O$ removal process. In this paper, an oxy-fuel combustion cycle that recovers the waste heat of a high-temperature fuel cell is analyzed thermodynamically. Variations of characteristics of $CO_2$ and $H_2O$ mixture which is extracted from the condenser and power consumption required to obtain highly-pure $CO_2$ gas were examined according to the variation of the condensing pressure. The influence of the number of compression stages on the power consumption of the $CO_2$ capture process was analyzed, and the overall system performance was also investigated.

순산소 연소 기본 사이클의 작동조건 변화에 따른 성능해석 (Influence of Operating Conditions on the Performance of a Oxy-fuel Combustion Reference Cycle)

  • 박병철;손정락;김동섭;안국영;강신형
    • 한국유체기계학회 논문집
    • /
    • 제12권4호
    • /
    • pp.30-36
    • /
    • 2009
  • Recently, there has been growing interest in the oxyfuel combustion cycle since it enables high-purity $CO_2 capture with high$ efficiency. However, the oxyfuel combustion cycle has some important issues regarding to its performance such as the requirement of water recirculation to decrease a turbine inlet temperature and proper combustion to enhance cycle efficiency. Also, Some of water vapour remain not condensed at condenser outlet because cycle working fluid contains non-condensable gas, i.e., $CO_2$. The purpose of the present study is to analyze performance characteristics of the oxyfuel combustion cycle with different turbine inlet temperatures, combustion pressures and condenser pressure. It is expected that increasing the turbine inlet temperature improves cycle efficiency, on the other hand, the combustion pressure has specific value to display highest cycle efficiency. And increasing condensing pressure improves water vapour condensing rate.