Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
FLUIDIZED CALCINATION FURNACE
PROBLEM TO BE SOLVED: To provide a fluidized calcination furnace which can reduce an uncombusted rate in an outlet of the fluidized calcination furnace, and can perform sufficient calcination while preventing clogging in a preheater even when coal and oil coke having poor combustibility are used in fuel.SOLUTION: A fluidized calcination furnace includes: a furnace body which is formed into a cylindrical shape having a central axis in a vertical direction and has a fluidized air blowing port for blowing fluidized air to the inside in the bottom thereof; a fuel blowing line which is connected to the side portion of the furnace body and blows the fuel into the furnace body; a raw material chute which is connected to the side portion of the furnace body and charges a cement raw material; and a bleed air conduit which is connected to the side portion of the furnace body and introduces bleed air into the furnace body. In a cross section perpendicular to the central axis of the furnace body, an extension line of the central axis of the bleed air conduit is shifted from a diameter line of the furnace body, and a ratio (S/R) of a distance S between the diameter line of the furnace body in parallel with the central axis of the bleed air conduit and an inner wall surface at a farthest position of the bleed air conduit, and an internal radius R of the furnace body is set at 0.50 or more and 0.91 or less.SELECTED DRAWING: Figure 1
【課題】 流動仮焼炉出口における未燃焼率を低減させることができ、燃料に燃焼性の悪い石炭やオイルコークスを使用してもプレヒータでの閉塞を防止しつつ十分な仮焼を行うことが可能な流動仮焼炉を提供する。【解決手段】 流動仮焼炉は、上下方向に沿う中心軸を有する筒状に形成され、流動化空気を内部に吹き込むための流動化空気吹込口を底部に有する炉体と、炉体の側部に接続され、炉体内に燃料を吹き込む燃料吹込ラインと、炉体の側部に接続され、セメント原料を投入する原料シュートと、炉体の側部に接続され、炉体内に抽気空気を導入する抽気導管とを備え、炉体の中心軸と直交する横断面において、抽気導管の中心軸の延長線が、炉体の直径線からずれており、抽気導管の中心軸に平行な炉体の直径線から抽気導管の最も離れた位置の内壁面までの距離Ｓと炉体の内半径Ｒとの比率（Ｓ／Ｒ）が０．５０以上０．９１以下に設定されている。【選択図】 図１
FLUIDIZED CALCINATION FURNACE
PROBLEM TO BE SOLVED: To provide a fluidized calcination furnace which can reduce an uncombusted rate in an outlet of the fluidized calcination furnace, and can perform sufficient calcination while preventing clogging in a preheater even when coal and oil coke having poor combustibility are used in fuel.SOLUTION: A fluidized calcination furnace includes: a furnace body which is formed into a cylindrical shape having a central axis in a vertical direction and has a fluidized air blowing port for blowing fluidized air to the inside in the bottom thereof; a fuel blowing line which is connected to the side portion of the furnace body and blows the fuel into the furnace body; a raw material chute which is connected to the side portion of the furnace body and charges a cement raw material; and a bleed air conduit which is connected to the side portion of the furnace body and introduces bleed air into the furnace body. In a cross section perpendicular to the central axis of the furnace body, an extension line of the central axis of the bleed air conduit is shifted from a diameter line of the furnace body, and a ratio (S/R) of a distance S between the diameter line of the furnace body in parallel with the central axis of the bleed air conduit and an inner wall surface at a farthest position of the bleed air conduit, and an internal radius R of the furnace body is set at 0.50 or more and 0.91 or less.SELECTED DRAWING: Figure 1
【課題】 流動仮焼炉出口における未燃焼率を低減させることができ、燃料に燃焼性の悪い石炭やオイルコークスを使用してもプレヒータでの閉塞を防止しつつ十分な仮焼を行うことが可能な流動仮焼炉を提供する。【解決手段】 流動仮焼炉は、上下方向に沿う中心軸を有する筒状に形成され、流動化空気を内部に吹き込むための流動化空気吹込口を底部に有する炉体と、炉体の側部に接続され、炉体内に燃料を吹き込む燃料吹込ラインと、炉体の側部に接続され、セメント原料を投入する原料シュートと、炉体の側部に接続され、炉体内に抽気空気を導入する抽気導管とを備え、炉体の中心軸と直交する横断面において、抽気導管の中心軸の延長線が、炉体の直径線からずれており、抽気導管の中心軸に平行な炉体の直径線から抽気導管の最も離れた位置の内壁面までの距離Ｓと炉体の内半径Ｒとの比率（Ｓ／Ｒ）が０．５０以上０．９１以下に設定されている。【選択図】 図１
FLUIDIZED CALCINATION FURNACE
流動仮焼炉
WANG JUNZHU (Autor:in) / TAKAYAMA YOSHINORI (Autor:in)
25.08.2016
Patent
Elektronische Ressource
Japanisch
GYPSUM CALCINATION FURNACE AND GYPSUM CALCINATION METHOD
| Europäisches Patentamt | 2016
GYPSUM CALCINATION FURNACE AND GYPSUM CALCINATION METHOD
| Europäisches Patentamt | 2016