摘要:
열 교환기를 구비한 순환 유동층 보일러가 제공된다. 열 교환기를 구비한 순환 유동층 보일러는, 연료를 연소하는 연소로와, 연소로 하부의 전면 및 후면의 내화재 영역에 구비된 열 교환기를 포함하며, 열 교환기는, 연소로 내부의 입자가 유입되는 상부 개구부와 열 교환기 내부의 입자가 연소로로 배출되는 하부 개구부를 포함함으로써, 보일러의 소형화를 꾀할 수 있으며, 연소로의 횡방향의 온도 편차를 줄일 수 있다.
摘要:
The present invention relates to a circulating fluidized bed combustion boiler including: a combustion furnace in which fluidized fuel is burned; a separator for receiving exhaust gas and solid particles generated due to combustion of the fluidized fuel from the combustion furnace, and separating them into the solid particles and the exhaust gas; a heat recovery unit for recovering heat contained in the exhaust gas separated by the separator; a discharge duct connecting the heat recovery unit and the separator; a first super-heater installed in the heat recovery unit for recovering the heat contained in the exhaust gas passing through the heat recovery unit; and a second super-heater installed in the discharge duct for recovering the heat contained in the exhaust gas passing through the interior of the discharge duct, wherein the first super-heater and the second super-heater are connected to each other. According to the present invention, because the second super-heater is installed in the discharge duct and a third super-heater is installed in the separator, the heat contained in the exhaust gas can be maximally recovered, and therefore heat efficiency can be improved.
摘要:
열교환부의 열 교환 효율을 신속히 그리고 자동으로 조절함으로써 상기 열 교환 효율을 소정 범위 내로 항상 유지할 수 있는 순환 유동층 보일러가 개시된다. 본 발명의 순환 유동층 보일러는 유동화된 연료가 연소되는 연소로, 상기 유동화된 연료의 연소로 인해 발생되는 배가스 및 고체 입자들을 상기 연소로로부터 받아 상기 고체 입자들을 상기 배가스로부터 분리하는 분리기, 및 상기 분리기에 의해 상기 배가스로부터 분리된 상기 고체 입자들을 상기 연소로로 복귀시키는 리턴 시스템을 포함한다. 상기 리턴 시스템은 상기 분리기로부터 공급되는 상기 고체 입자들로부터 열을 회수하기 위한 열교환부를 포함한다. 본 발명의 순환 유동층 보일러는 상기 분리기로부터 상기 열교환부로 유입되는 상기 고체 입자들의 유량을 조절하기 위한 제어부를 더 포함한다.
摘要:
The present invention relates to a heat exchange apparatus for a circulating fluidized-bed combustion boiler and the circulating fluidized-bed combustion boiler having the same. The heat exchange apparatus according to the present invention comprises: a heat exchange chamber connected to a separator for separating solid particles from exhaust gas discharged from a combustion furnace; a heat exchange tube performing heat exchange by absorbing heat from the solid particles supplied from the separator to the heat exchange chamber; a restraining member movably installed at a return duct connecting the heat exchange chamber and the separator; and a moving unit moving the restraining member between a first position and a second position so that the restraining member can restrain a path for moving the solid particles, which are supplied from the separator to the heat exchange chamber, toward the heat exchange chamber, wherein the restraining member at the first position is inserted into the heat exchange chamber and the restraining member at the second position is positioned outside the heat exchange chamber. According to the present invention, heat exchange efficiency can be controlled in response to various changes so that responsiveness for an operation condition variously changing during the operation of the combustion furnace can be improved, wherein the changes are that the amount of the solid particles supplied to the heat exchange chamber during the operation of the combustion furnace changes, temperature inside the combustion furnace changes, etc.
摘要:
An apparatus and a method of cooling ashes on the bottom in a circulating fluidized bed combustion boiler are provided to reduce the load of a cooler and raise boiler efficiency by improving an ash movement structure. An ash outlet pipe(110) is connected to one end of a bottom surface of a boiler(100) so that ashes on the bottom surface are withdrawn by the gravity. A ash removing unit(120) is connected to an external device to supply compressed air and removes minute particles of the aches from the air outlet pipe by injecting compressed air into the ash outlet pipe. An ash amount adjusting unit(130) opens or closes a passage of the ash outlet pipe to adjust an amount of withdrawn ashes. A cooler(140) includes a plurality of nozzles(142) to inject air in order to cool or move the ashes. An heated air inlet pipe(150) connects the cooler with a boiler to supply heated air to the boiler.