JPS5828902A - Fluid bed boiler - Google Patents
Fluid bed boilerInfo
- Publication number
- JPS5828902A JPS5828902A JP12639781A JP12639781A JPS5828902A JP S5828902 A JPS5828902 A JP S5828902A JP 12639781 A JP12639781 A JP 12639781A JP 12639781 A JP12639781 A JP 12639781A JP S5828902 A JPS5828902 A JP S5828902A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized bed
- air
- boiler
- combustion
- floor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は流動床ボイラの構造に関するものである。従来
流動床ボイラの流動媒体として珪砂、石灰石などの不活
性材料が使用されているが、本発明は特に公害防止上、
ＮＯｘ“化合物の排出値の低減を計る上に効果を発揮す
る二段燃焼式流動床ボイラな提案するもので、ボイラの
容量を増大してもなおかつ効率よく良好な二段燃焼が達
成されるような流動床ボイラを提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a fluidized bed boiler. Conventionally, inert materials such as silica sand and limestone have been used as fluid media in fluidized bed boilers, but the present invention is particularly effective for preventing pollution.
We are proposing a two-stage combustion fluidized bed boiler that is effective in reducing the emission value of NOx compounds, so that even if the boiler capacity is increased, efficient and good two-stage combustion can be achieved. This provides a fluidized bed boiler.
特に本発明は大容量用に立体的に−み重ねたいわゆるス
タック方式の流動床ボイラにおいて、二段燃焼用の２次
燃焼空気の導入空気孔を一階上の流動層°ベッド下側の
ｊｌＩを利用して設けたことを特徴とするものである。In particular, the present invention provides a so-called stack type fluidized bed boiler for large capacity, in which the secondary combustion air for two-stage combustion is introduced into the fluidized bed one floor above the fluidized bed. It is characterized by being provided using the.
先ず従来の二段ｔ１１焼用流動床ボイラの概要について
＃１１ＷＪにより説明すると、ボイラの流動層ベッド（
４）下部の５１１１（２＞から１次空気を、空気分散板
（３）を通してボイラ（１）内の流動層に吹き込んで流
動層を浮遊させ燃焼物を燃焼する。この場合、流動層内
でＮＯＸが発生するのを抑制するために理論空気比以下
の１次空気量を送給するために不完全燃焼ガスが発生す
る。この不完全＊＊ガスを完全燃焼させるため必要な２
次燃焼空気を二段燃焼用空気孔（５）より送給する。こ
の空気孔（５）の位置は流動層ベッド（４）のフリーボ
ード部の最適位鐙とするものであるが、この場合台ベッ
ド自体で二段燃焼を完結させるには二段燃焼用空気孔（
５）をとフて各ベッドでのフリーボード高さを充分高く
とる必要があり、ボイラ全体として＾さが高くなる欠点
があり、２次空気の貫通力に限界があるので充分な燃焼
室＾さがとれず良好な二段燃焼がむずかしくなる。First, an overview of the conventional two-stage T11 fluidized bed boiler will be explained by #11WJ.
4) Primary air from the lower part 5111 (2>) is blown into the fluidized bed in the boiler (1) through the air distribution plate (3) to suspend the fluidized bed and burn the combustion materials. Incomplete combustion gas is generated because the amount of primary air below the stoichiometric air ratio is supplied to suppress the generation of NOX.
The next combustion air is fed through the two-stage combustion air hole (5). The position of this air hole (5) is the optimum position of the stirrup in the freeboard part of the fluidized bed (4), but in this case, in order to complete the two-stage combustion in the platform bed itself, (
5), it is necessary to make the freeboard height sufficiently high in each bed, which has the disadvantage that the height of the boiler as a whole becomes high, and there is a limit to the penetration power of secondary air, so there is a sufficient combustion chamber. This makes it difficult to achieve good two-stage combustion.
本発明はこれら欠点を克服したものであって本発明の実
施例を図によって説明すると、第２図に示すものは、全
体は一つのボイラであるが、流動−ベッド（４）を三層
設け、各流°動層ベッド（４）の下にはそれぞれ風箱（
２，）を設は送風機（６）によつて各流動層ベッド（４
）下側□のそれｆれのｍ１ｌｌｉ（２）に空気を送給す
る。The present invention overcomes these drawbacks, and an embodiment of the present invention will be explained with reference to the drawings. The one shown in Fig. 2 is a single boiler as a whole, but three layers of fluidized beds (4) are provided. , a wind box (
2,) is installed in each fluidized bed (4) by means of a blower (6).
) Air is supplied to m1lli(2) on the lower side □.
（３）は空気分散板である。今−階をａ、二階をｂ１三
階を０１というサフィックスをつけて表わすと、−階の
流動層囲壁の上に風箱（２ｂ）があり二階の流動層囲壁
の上には風箱（２Ｃ）があり、燃焼室を三層に構成する
。−階の流動層ベッド（４ａ）には風箱（２ａ）が、二
階の流動層ベッド（４ｂ）には風箱（２ｂ）が又三階の
流動層ベッド（４Ｃ）には風箱（２Ｃ）があって各空気
分散板（３）を介して空気は各ベッド下側の風格より各
階の流動層に送られ燃焼物を燃焼する。−階の燃焼室に
対する２次燃焼空気は二階の風箱（２ｂ）に設けた二段
燃焼用空気孔（５ａ）より、また二階の燃焼室に対する
二次燃焼空気は三階の風格（２Ｃ）に設けた二段燃焼用
空気孔（５ｂ）より噴出するように構成する。空気孔（
５ａ ） （５ｂ ）はそれぞれ風箱（２ｂ ）
（２ｃ ）の壁面に開口して一段燃焼用空気の一部を二
段燃焼用空気に利用するものである。(3) is an air distribution plate. If the current floor is represented by the suffix a, the second floor is b, and the third floor is 01, there is a wind box (2b) on the fluidized bed wall on the - floor, and a wind box (2c) on the fluidized bed wall on the second floor. ), and the combustion chamber is composed of three layers. There is a wind box (2a) on the fluidized bed (4a) on the - floor, a wind box (2b) on the fluidized bed (4b) on the second floor, and a wind box (2c) on the fluidized bed (4C) on the third floor. ), and the air is sent from the windshield below each bed to the fluidized bed on each floor via each air distribution plate (3) to combust the combustible materials. - Secondary combustion air for the combustion chamber on the second floor is supplied from the two-stage combustion air hole (5a) provided in the wind box (2b) on the second floor, and secondary combustion air for the combustion chamber on the second floor is supplied from the wind box (2C) on the third floor. It is configured so that the air is ejected from a two-stage combustion air hole (5b) provided in the. Air hole (
5a) (5b) are each wind box (2b)
(2c) is opened in the wall surface and a part of the air for the first stage combustion is used as the air for the second stage combustion.
他の実施例を示す第３図は一階及び二階に流動層ベッド
（４ａ ） （４ｂ ）を有するもので二段燃焼用空
気孔（５）は二階の流動層ベッド（４ｂ）用の風箱（２
ｂ）の壁面に開口しているが、二段燃焼用ファン（７）
を別途有するもので、風箱（２）内に空気管寄（８）を
ボイラの巾方向に設けて複数のノズルによって燃焼室内
に均一に２次燃焼用空気を送給し１次燃焼用空気と別の
系統としたものである。FIG. 3 showing another embodiment has fluidized bed beds (4a) (4b) on the first and second floors, and the air holes (5) for two-stage combustion are used as air boxes for the fluidized bed (4b) on the second floor. (2
b) Although it is open on the wall, there is a two-stage combustion fan (7)
An air header (8) is installed in the wind box (2) in the width direction of the boiler, and multiple nozzles are used to uniformly feed secondary combustion air into the combustion chamber. It is a different system.
このように本発明は燃焼室を立体的に積み重ねたいわゆ
るスタック方式の流動床ボイラにおいて、二段燃焼用の
２次燃焼空気の導入空気口を一階上の流動層ベッド下側
の風箱を利用して設けたことを特徴とする流動床ボイラ
であるので、第１図の如く単（流動床ボイラの流動床面
積を多くとるた゛めにスタック方式の構造にしたもので
なく、−階上の流動層ベッド下側のＭｌを利用して２次
燃焼用空気口（５）を設けたので充分な燃焼室がとれ二
段燃焼が良好に行なわれ、特にボイラ巾方向に充分な２
次空気導入孔が配置できる利点があり、そのために燃焼
ガスとの良好な混合が促進されると共に共通流路部での
ガスの滞留時間が充分とれるので、ＮＯｘ排出値の低減
を目的とした効果的なボイラとすることができる。In this way, the present invention provides a so-called stack-type fluidized bed boiler in which combustion chambers are stacked three-dimensionally. Since this is a fluidized bed boiler characterized by the fact that Since the secondary combustion air port (5) is provided using the Ml at the bottom of the fluidized bed bed, a sufficient combustion chamber is created and two-stage combustion is performed well.
It has the advantage of being able to arrange secondary air inlet holes, which promotes good mixing with combustion gas and provides sufficient residence time for the gas in the common flow path, which is effective in reducing NOx emissions. It can be used as a boiler.
第１図は流動床ボイラを説明する側断面図、第２図、第
３図は共に本発明の実施態様を示す流動床ボイラの側断
面図である。
１・・・ボイラ、 ２’（２ａ 、 ２ｂ 、 ２０
） −・・風箱、３・・・空気分散板、
４ （４ａ １４ｂ 、 ４ｃ ）・・・流動■ベット
、５ （５ａ 、 ５ｂ ）・・・二段燃焼用空気孔、
６・・・ファン、 ７・・・ファン、 ８・・・空気管
寄。
手続補正書（刃側
昭和５７年’２ Ｑ ３ Ｌｌ
ｌ、事件の表示 昭和５６ 年 特 許 願第１２６８
９７号２、発明の名称 流動床ボイラ
３、補Ｗをする者事件との関係 特 許 出願人代表
者 長谷用謙浩
４、 代 理 人 〒６５０
７・ 補正０内容 別紙の通シ補正します。。FIG. 1 is a side sectional view illustrating a fluidized bed boiler, and FIGS. 2 and 3 are side sectional views of a fluidized bed boiler showing embodiments of the present invention. 1... Boiler, 2' (2a, 2b, 20
) -... Wind box, 3... Air distribution plate, 4 (4a 14b, 4c)... Flow bed, 5 (5a, 5b)... Air hole for two-stage combustion,
6...Fan, 7...Fan, 8...Air pipe header. Procedural amendment (Blade side 1982'2 Q 3 Ll l, case description 1981 Patent Application No. 1268)
No. 97 No. 2, Title of the invention: Fluidized bed boiler 3, Relationship with the supplementary W case Patent Representative: Kenhiro Haseyo 4, Agent: 〒650 7・Amendment 0 Contents: I will amend the attached document. . .
Claims (1)
ック方式の流動床ボイラにおいて、二段燃焼用の２次ｍ
ｍ空気の導入空気孔を一階上の流動層ベッド下側の風箱
を利用して設けたことを特徴とする流動床ボイラ。In a so-called stack-type fluidized bed boiler in which combustion chambers with fluidized bed beds are stacked, a secondary m
A fluidized bed boiler characterized in that an air introduction hole for introducing m air is provided using a wind box below a fluidized bed bed one floor above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12639781A JPS5828902A (en) | 1981-08-12 | 1981-08-12 | Fluid bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12639781A JPS5828902A (en) | 1981-08-12 | 1981-08-12 | Fluid bed boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5828902A true JPS5828902A (en) | 1983-02-21 |
| JPS6141366B2 JPS6141366B2 (en) | 1986-09-13 |
Family
ID=14934131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12639781A Granted JPS5828902A (en) | 1981-08-12 | 1981-08-12 | Fluid bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828902A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63127254U (en) * | 1987-02-09 | 1988-08-19 |
-
1981
- 1981-08-12 JP JP12639781A patent/JPS5828902A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6141366B2 (en) | 1986-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02157034A (en) | Rapid fluidized bed reactor and operation method thereof | |
| US5103773A (en) | Fluid bed furnace | |
| JP2657867B2 (en) | Fluid bed combustion apparatus and method with multiple furnace sections | |
| US5678497A (en) | Apparatus for distributing secondary air into a large scale circulating fluidized bed | |
| JPS5828902A (en) | Fluid bed boiler | |
| US7331313B2 (en) | Continuous steam generator with circulating atmospheric fluidised-bed combustion | |
| JP3664837B2 (en) | Pulverized fuel combustion burner | |
| JP2732028B2 (en) | Fluidized bed reactor | |
| EP0224027B1 (en) | Method for operating a fluidized bed combustion | |
| JPH01260207A (en) | Waste material incinerator | |
| JPS6137956Y2 (en) | ||
| JP2930232B2 (en) | Fluidized bed heat recovery apparatus and operation method thereof | |
| JPS6160322B2 (en) | ||
| JPH0449449Y2 (en) | ||
| JPS5960106A (en) | Low nox burning device | |
| JPS62213601A (en) | Multiple circulation combustion boiler | |
| JP2895061B2 (en) | Combustion method for boiler combustion device | |
| JP2937737B2 (en) | Fluidized bed combustion method and apparatus with partial combustion | |
| JPH0120490Y2 (en) | ||
| JPH0532673B2 (en) | ||
| JPS59157406A (en) | Process for preventing generation of nox in triple-stage combustion | |
| JPS6022242B2 (en) | Fluidized bed combustion equipment | |
| JPH0263123B2 (en) | ||
| JPH0419290Y2 (en) | ||
| JPS6122102A (en) | Fluidized-bed combustion boiler |