JPH0396519U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

図面は本考案による流動層燃焼ボイラの実施例
を示すもので、第１図は燃焼室構造を示す縦断面
図、第２図は燃焼室底面に設けた１次空気吹き出
しノズル取付部の一部拡大側面図、第３図は従来
の流動層燃焼ボイラの構造概略を示す側面図であ
る。 ２０……燃焼室、２０ａ……下部円筒部、２０
ｂ……テーパ部、２０ｃ……上部円筒部、２１…
…１次空気吹き出しノズル、２２……水室、２３
……耐火材、２４……１次空気室、２５……補助
バーナ、２６……２次空気吹き出し口、２７……
リサイクル燃料の供給口、２８……固形燃料フイ
ーダ。 The drawings show an embodiment of the fluidized bed combustion boiler according to the present invention. Fig. 1 is a longitudinal sectional view showing the combustion chamber structure, and Fig. 2 is a part of the primary air blowing nozzle mounting part provided on the bottom of the combustion chamber. FIG. 3 is an enlarged side view showing a schematic structure of a conventional fluidized bed combustion boiler. 20... Combustion chamber, 20a... Lower cylindrical part, 20
b...Tapered part, 20c... Upper cylindrical part, 21...
...Primary air blowing nozzle, 22...Water chamber, 23
...Refractory material, 24...Primary air chamber, 25...Auxiliary burner, 26...Secondary air outlet, 27...
Recycled fuel supply port, 28...Solid fuel feeder.

Claims (1)

【実用新案登録請求の範囲】 (1) 円筒形胴体の内側底部に、点火用オイルバ
ーナを装備した流動層燃焼による燃焼室を設け、
その上部水室内に燃焼室に連通する複数の煙管を
設けてなる流動層燃焼ボイラにおいて、 前記燃焼室は、前記円筒形胴体の形成する水室
に囲まれた下部円筒部とテーパ部と上部円筒部か
らなる漏斗状を呈する燃焼室に構成し、燃焼室の
底面には、複数の１次空気吹き出しノズルに設け
、中間周壁部には２次空気の吹き出し口を設け、
さらに前記下部円筒部と上部円筒部の周壁は、そ
れぞれ耐火材をもつて内張り構造に構成したこと
を特徴とする流動層燃焼ボイラの燃焼室。 (2) 前記上部円筒部の耐火材による内張り周壁
の厚さは、下部円筒部の耐火材による内張り厚さ
よりも肉薄であることを特徴とする請求項１記載
の流動層燃焼ボイラの燃焼室。[Scope of Claim for Utility Model Registration] (1) A combustion chamber for fluidized bed combustion equipped with an oil burner for ignition is provided at the inner bottom of the cylindrical body,
In a fluidized bed combustion boiler comprising a plurality of smoke pipes communicating with a combustion chamber in its upper water chamber, the combustion chamber includes a lower cylindrical part surrounded by a water chamber formed by the cylindrical body, a tapered part, and an upper cylindrical part. A plurality of primary air blowing nozzles are provided on the bottom of the combustion chamber, and a secondary air blowing port is provided on the intermediate peripheral wall.
Furthermore, the combustion chamber of the fluidized bed combustion boiler is characterized in that the peripheral walls of the lower cylindrical portion and the upper cylindrical portion are each lined with a refractory material. (2) The combustion chamber of a fluidized bed combustion boiler according to claim 1, wherein the thickness of the peripheral wall lined with refractory material in the upper cylindrical portion is thinner than the thickness of the lining made of refractory material in the lower cylindrical portion.