Integrated gasification combined cycle power plant

석탄가스화 복합발전 플랜트

  • Inventors:
  • Assignees: 한국전력공사
  • Publication Date: November 01, 2010
  • Publication Number: KR-100990892-B1

Abstract

본 발명은 실시간으로 연소진단을 하여 연료주입량을 최적화할 수 있도록 한 석탄가스와 복합발전 플랜트에 관한 것이다. 이러한 본 발명은 가스화기에서 생성되는 석탄가스가 열교환기와 가스정제기를 거쳐서 가스터빈연소기에 공급되고 연소되어, 가스터빈이 구동됨에 따라 발전되는 가스발전부와, 상기 가스화기에서 생성되는 증기가 배열회수보일러를 거쳐 증기터빈에 공급되어 발전되는 증기발전부 및, 상기 가스터빈연소기에 장착된 동압센서에서 감지한 연소진동 측정데이터를 분석하여 석탄가스의 유량, 조성 및 온도를 제어하는 연료제어부를 포함한다.
PURPOSE: A carbonic gas complex generating plant is provided to reduce the contaminant because the consumption of the fuel is reduced and the optimum combustion condition is formed by controlling the amount of the dilute nitrogen and the secondary fuel and controlling combustion oscillation by monitoring NOx generation rate. CONSTITUTION: A carbonic gas complex generating plant is composed of a gas generating unit, a steam generating unit, and a fuel control unit. The carbonic gas generated in a gasifier(110) is supplied to a gas turbine burner(140) by passing by a heat exchanger(120) and a gas refiner(130). The gas generating unit is operated by the operation of a gas turbine(150). The steam generated in the gasifier is supplied to the gas turbine through a heat recovery boiler(170). A fuel control unit(200) analyzes combustion oscillation measurement data sensed in a kinetic pressure sensor(202) and controls the flow rate, composition, and temperature of the carbonic gas. The kinetic pressure sensor is mounted on the gas turbine burner. When computing the total fuel injection rate injected to the gas turbine burner, the fuel control unit identically keeps the total input amount before and after putting the second fuel. The fuel control unit controls the flow rate, composition and temperature of the mixed gas. The fuel control unit controls the amount of the dilute nitrogen inserted in the gas turbine.

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