JPS6014081Y2 - Vertical furnace flue tube fluidized bed boiler - Google Patents

Description

【考案の詳細な説明】 この考案は流動層ボイラに係り、−特に装置を小型に形
威でき、かつ熱効率を高める流動層ボイラに関する。[Detailed Description of the Invention] This invention relates to a fluidized bed boiler, and more particularly to a fluidized bed boiler that can be made compact and has high thermal efficiency.

流動層内部に伝熱管を有する流動層ボイラは流動層の上
部に木管を配置したものと、竪形の炉筒煙管を配置した
ものとの二種の形式に大別される。Fluidized bed boilers that have heat transfer tubes inside the fluidized bed are roughly divided into two types: those with wood pipes placed above the fluidized bed, and those with vertical smoke tubes.

このうち竪形炉筒煙管を配置したものは蒸発量が１０ｒ
／ ｈ以下の比較的小容量のものに適しており、従って
小型軽量で設置面積が小さいことが必要である。Of these, the one with a vertical furnace and smoke pipe has an evaporation rate of 10 r.
It is suitable for a relatively small capacity of less than /h, and therefore needs to be small, lightweight, and have a small installation area.

第１図は従来の竪形炉筒煙管式の流動層ボイラを示す。FIG. 1 shows a conventional vertical furnace and smoke tube type fluidized bed boiler.

流動層１７の空塔部には炉筒１６が連設してあり、この
炉筒１６とボイラ本体１の間には缶水Ｗが収容されてい
る。A furnace cylinder 16 is connected to the empty tower portion of the fluidized bed 17, and canned water W is accommodated between the furnace cylinder 16 and the boiler body 1.

２はボイラ本体上部に配置した気水分離器であり、この
気水分離器２をボイラ本体に組み込んである結果、缶水
Ｗの水面１４上に一定の高さｈの蒸気室３を形威しであ
る。Reference numeral 2 denotes a steam-water separator placed at the top of the boiler body. As a result of incorporating the steam-water separator 2 into the boiler body, a steam chamber 3 of a constant height h is formed above the water surface 14 of the canned water W. It is.

このためボイラ本体自体がこの蒸気室の分だけ大型とな
り、竪形炉筒煙管ボイラの利点が失われることになる。As a result, the boiler itself becomes larger by the size of the steam chamber, and the advantages of the vertical fire tube boiler are lost.

また煙管６の一部が蒸気室３に突出することになり、熱
伝達率の悪い蒸気とのみ熱交換を行うため熱効率が悪化
するという問題もある。Further, a part of the smoke pipe 6 protrudes into the steam chamber 3, and heat exchange is performed only with steam having a poor heat transfer coefficient, resulting in a problem of poor thermal efficiency.

この考案の目的は上述した従来技術の欠屯をなくし、小
型かつ熱効率の高い整形炉筒煙管式流動層ボイラを提供
することにある。The purpose of this invention is to eliminate the deficiencies of the prior art described above and to provide a shaped furnace tube smoke tube type fluidized bed boiler which is small in size and has high thermal efficiency.

要するにこの考案はボイラ本体の外部に気水分離器を有
するボイラドラムを配置し、これによりボイラ本体内の
蒸気室を廃してボイラ本体を小型化し、かつ煙管全体が
缶水と接触するよう構成して熱効率を高めたものである
。In short, this idea places a boiler drum with a steam-water separator outside the boiler body, thereby eliminating the steam chamber inside the boiler body, downsizing the boiler body, and making the entire smoke pipe come into contact with canned water. This increases thermal efficiency.

以下この考案の実施例を図面により説明する。Examples of this invention will be described below with reference to the drawings.

第２図において、流動層空塔部に接続して配置した炉筒
１６とボイラ本体１の間の空間には缶水Ｗが収容されて
おり、この缶木部に全体が位置するよう、つまり缶水Ｗ
に全体が接触するよう複数本の煙管６が缶木部に配置し
である。In FIG. 2, canned water W is stored in the space between the boiler body 1 and the furnace tube 16, which is connected to the fluidized bed cavity, and is arranged so that the entire can is located in the wooden part of the can. Canned water W
A plurality of smoke pipes 6 are arranged on the wood of the can so that they are in full contact with each other.

１２はボイラ本体外部に配置したボイラドラムであって
、内部には気水分離器２ａが配置しである。Reference numeral 12 denotes a boiler drum placed outside the boiler main body, and a steam/water separator 2a is placed inside.

７ａはこのボイラドラム１２と煙管６を配置した缶木部
とを接続する上昇管、７ｂは流動層１７内に配置した層
内伝熱管１５とボイラドラム１２とを接続する上昇管で
ある。7a is a rising pipe that connects the boiler drum 12 and the wood of the can in which the smoke tube 6 is arranged, and 7b is a rising pipe that connects the boiler drum 12 and the intrabed heat exchanger tube 15 arranged in the fluidized bed 17.

以上の如く構成することによって第１図に示すＡ部が不
必要となりこの分だけボイラの高さが減少する。By configuring as described above, the section A shown in FIG. 1 becomes unnecessary, and the height of the boiler is reduced by this amount.

次にこのボイラ装置の作動を説明すると、多孔板１８か
ら供給される流動化空気により内部の媒体は流動化して
流動層１７を形成すると共に燃料供給口５から投入した
燃料を燃焼する。Next, the operation of this boiler device will be described. The internal medium is fluidized by the fluidized air supplied from the perforated plate 18 to form a fluidized bed 17, and the fuel input from the fuel supply port 5 is combusted.

（燃焼灰は灰出口１０から外部に排出される。(The combustion ash is discharged to the outside from the ash outlet 10.

）これにより層内伝熱管１５内の給水は加熱され、発生
した気水混合物は上昇管７ｂを経てボイラドラム１２に
至る。) As a result, the water supply in the intralayer heat exchanger tube 15 is heated, and the generated steam-water mixture reaches the boiler drum 12 via the riser tube 7b.

一方高温の燃焼ガスＧは流動層空塔部から炉筒１６に至
り前記缶水Ｗを加熱し、さらに煙室１３を経て煙管６に
流入する。On the other hand, the high-temperature combustion gas G reaches the furnace tube 16 from the fluidized bed cavity, heats the canned water W, and further flows into the smoke pipe 6 via the smoke chamber 13.

この煙管配置部においてさらに缶水と熱交換した後排ガ
ス出口１４から外部に排出される。After further heat exchange with the can water in this smoke pipe arrangement part, the exhaust gas is discharged to the outside from the exhaust gas outlet 14.

一方加熱された気水混合物は上昇管７ａを経てボイラド
ラム１２に至る。On the other hand, the heated steam/water mixture reaches the boiler drum 12 via the riser pipe 7a.

ボイラドラム１２に流入した気水混合物は気水分離器２
ａにより分離され、蒸気Ｓとして外部に送出される一方
、飽和水は下降管１１により缶水収容空間の下部に戻さ
れる。The steam and water mixture that has flowed into the boiler drum 12 is transferred to the steam and water separator 2.
The saturated water is separated by a and sent to the outside as steam S, while the saturated water is returned to the lower part of the canned water storage space by the downcomer pipe 11.

この考案は以上の如く構威しであるので、ボイラ本体内
に蒸気室を形成する必要がなく装置全体を小型に形成で
き、かつ煙管郡全体で缶水と熱交換を行うため熱効率を
高めることができるという効果を奏する。Since this invention is structured as described above, it is not necessary to form a steam chamber in the boiler main body, and the entire device can be made compact, and the heat exchange with canned water is performed throughout the pipe group, increasing thermal efficiency. It has the effect of being able to.

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

第１図は従来の竪形炉筒煙管流動層ボイラの断面図、第
２図はこの考案に係る竪形炉筒煙管流動層ボイラの断面
図である。 １・・・・・・ボイラ本体、２ａ・・・・・・気水分離
器、６・・・・・・煙管、７ａ、７ｂ・・・・・・上昇
管、１１・・・・・・下降管、１２・・・・・・ボイラ
ドラム、１３・・・・・・煙道、１５・・・・・・層内
伝熱管、１６・・・・・・炉筒、１７・・・・・・流動
層。FIG. 1 is a cross-sectional view of a conventional vertical flue-tube fluidized bed boiler, and FIG. 2 is a cross-sectional view of a vertical flue-tube fluidized bed boiler according to this invention. 1... Boiler main body, 2a... Steam water separator, 6... Fire pipe, 7a, 7b... Rising pipe, 11... Descending pipe, 12... Boiler drum, 13... Flue duct, 15... Inner layer heat transfer tube, 16... Furnace tube, 17... ...Fluidized bed.

Claims (1)

【実用新案登録請求の範囲】 １ 流動層上部に竪形の炉筒と、煙道を介してこの炉筒
と接続する煙管とを配置し、この炉筒と煙管により缶水
を加熱するものにおいて、煙管全体を缶木部に浸漬配置
し、ボイラ本体外部には気水分離器を持つボイラドラム
を配置し、このボイラドラムとボイラ本体の缶木部を上
昇管および下降管で接続した竪形炉筒煙管流動層ボイラ
。 ２ 実用新案登録請求の範囲第１項記載の竪形炉筒煙管
流動層ボイラにおいて、流動層部に層内伝熱管を配置し
、この層内伝熱管と前記ボイラドラムとを上昇管で接続
したもの。[Scope of Claim for Utility Model Registration] 1. A vertical furnace tube and a smoke tube connected to the furnace tube through a flue are arranged above the fluidized bed, and canned water is heated by the furnace tube and smoke tube. , the entire smoke pipe is immersed in the can wood, a boiler drum with a steam and water separator is placed outside the boiler body, and this boiler drum and the can wood of the boiler body are connected by a riser pipe and a descender pipe. Fluidized bed boiler with flue and smoke tube. 2 Utility Model Registration Claim In the vertical furnace smoke tube fluidized bed boiler described in claim 1, an intrabed heat exchanger tube is arranged in the fluidized bed portion, and the intrabed heat exchanger tube and the boiler drum are connected by a riser tube. thing.