JP3937307B2 - Combustion chamber structure in thermal storage combustion equipment - Google Patents

Combustion chamber structure in thermal storage combustion equipment Download PDF

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JP3937307B2
JP3937307B2 JP2002041339A JP2002041339A JP3937307B2 JP 3937307 B2 JP3937307 B2 JP 3937307B2 JP 2002041339 A JP2002041339 A JP 2002041339A JP 2002041339 A JP2002041339 A JP 2002041339A JP 3937307 B2 JP3937307 B2 JP 3937307B2
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combustion chamber
combustion
heat storage
stirring plates
partition
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JP2003240223A (en
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和彦 北洞
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新東工業株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、未処理ガスの供給流路および処理済ガスの排気流路となる蓄熱室を仕切り壁をもって並列に仕切ると共に各蓄熱室の上部を共通の燃焼室により連通接続した蓄熱燃焼装置における燃焼室構造に関する。
【0002】
【従来の技術】
従来、上記のような蓄熱式燃焼装置においてガス分解効率を向上させるための1つの方法に、燃焼温度域の時間を如何に長く取るかということがある。そのための対策として燃焼室の容積を大きくして滞留時間を長くする方法が採られてきた。
【0003】
【発明が解決しようとする課題】
しかし、燃焼室の容積を大きくするということは、装置全体が大きくなることになってしまい、それだけで製作コストが高くなることになる。また、蓄熱燃焼装置ではバ−ナを用いて燃焼室内の温度を上げるようにしており、そのためバ−ナのある1個所から熱が出るので燃焼室内で温度分布ができやすくなる。温度分布ができてしまうと分解効率の低下につながり、どの場所で温度制御をするか難しくなる。
【0004】
本発明は上記の問題に鑑みて成されたもので、ガスの燃焼室内通過時間を長くし、かつ温度分布の不均一を無くすことができ、その結果ガス分解効率を向上させることができ、これにより製作コストの低減や装置の省スペ−ス化ができる蓄熱燃焼装置における燃焼室構造を提供することを目的とする。
【0005】
【課題を解決するための手段】
上記の目的を達成するために本発明の蓄熱燃焼装置における燃焼室構造は、未処理ガスの供給通路および処理ガスの排気通路となる蓄熱室を仕切り壁をもって並列に仕切ると共に各燃焼室の上部を共通の燃焼室により連通接続した蓄熱燃焼装置における燃焼室構造であって、前記燃焼室内における前記各仕切り壁の上方に、ほぼ垂直状態を成して、該燃焼室を左右に仕切る4枚一組の撹拌板を四方に向けて固定配設し、一組の撹拌板のうち前後方向へ向かう2枚の撹拌板は、手前から見たとき中心で相互に交差して2個の上部分および下部分がそれぞれ30〜90度の角度を形成し、また、上下方向へ向かう2枚の撹拌板は、下から見たとき中心で相互に交差して、前後方向へ向かう2枚の前記撹拌板の存在しない2個の左部分および右部分がそれぞれ50〜150度の角度を形成することを特徴とする。
【0006】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて詳しく説明する。図1は本発明に係る蓄熱燃焼装置の一部切欠きの全体構成図を、また図2は図1の右側面図を示す。さらに図3は撹拌板の取付け詳細図である。
【0007】
仕切り壁1、1により左右に仕切られて3つの蓄熱室2、2、2が並列に立設した状態にされ、その内部には、蓄熱体3がそれぞれ充填されている。各蓄熱室2、2、2の上部には、図示されないバ−ナを設けた共通の燃焼室4が連通接続され、各蓄熱室2、2、2の下部には未処理ガスの供給ダンパ5及び処理済ガスの排気ダンパ6がそれぞれ連通されている。
【0008】
また前記燃焼室4内における各仕切り壁1の上方には、図1に示すように、ほぼ垂直状態を成して、燃焼室4を左右に仕切る4枚一組の撹拌板7、7、7、7が四方向(上下前後)に向けて固定配設されており、一組の撹拌板7、7、7、7はそれぞれ角度をもって取り付けられている。
【0009】
なお、一組の撹拌板7、7、7、7の取付け角度は、図3に示すように、A−A矢視(ハ)、B−B矢視(ロ)、C−C矢視(ニ)にて示している角度R1〜R3である。これらの角度は、燃焼室4内を通過するガスを効率良く撹拌するものであり、試験及びシュミレーションを繰り返し行い、次のような範囲が好適であると認められた。すなわち、R1:15〜45度、R2:15〜45度、R3:50〜150度が好適であった。
換言すると、図1において、一組の撹拌板7、7、7、7のうち前後方向へ向かう2枚の撹拌板7、7は、手前から見たとき中心で相互に交差して2個の上部分および下部分がそれぞれ30〜90度の角度を形成し、また、上下方向へ向かう2枚の撹拌板7、7は、下から見たとき中心で相互に交差して、前後方向へ向かう2枚の前記撹拌板7、7の存在しない2個の左部分および右部分がそれぞれ50〜150度の角度を形成するようになっている。
【0010】
このように構成されたものは、各供給ダンパ5及び各排気ダンパ6の開閉制御により未処理ガスを蓄熱室2、2、2のいずれか1つの下方から導入させて蓄熱体3により予備加熱させた後、燃焼室4に供給して加熱処理し、残りの蓄熱室2、2のいずれか1つの上方から蓄熱体3内に流れ下方の排気ダンパ6を介して排気されるものである。
【0011】
なお上記のようにして燃焼室4内に導入されたガスは、4枚の撹拌板7、7、7、7の間を通過することにより効率よく撹拌され、温度分布ができにくくなり、また滞留時間も長くなることが判明した。
【0012】
【発明の効果】
本発明は上記の説明から明らかなように、燃焼室内において、各仕切り壁の上位に該燃焼室を左右に仕切る4〜8枚の撹拌板を四方向に向けて固定配設すると共に各撹拌板をそれぞれ角度をもって取り付けた燃焼室構造としたからガス流れが効率よく撹拌され、温度分布ができにくくなり、ガスの滞留時間も長くなり、ガス分解効率が大幅に向上し、大型の燃焼室にしなくてもよくなり、製作コストの低減に役立つ等優れた効果を有する。
【図面の簡単な説明】
【図1】本発明に係る蓄熱燃焼装置の一部切欠きの全体構成図である。
【図2】図1の右側面図である。
【図3】燃焼室内の撹拌板取付けを示す詳細図(イ)(ロ)(ハ)(ニ)である。
【符号の説明】
1 仕切り壁
2 蓄熱室
3 蓄熱体
4 燃焼室
5 供給ダンパ
6 排気ダンパ
7 撹拌板
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to combustion in a heat storage combustion apparatus in which a heat storage chamber serving as an untreated gas supply passage and a treated gas exhaust passage is partitioned in parallel with a partition wall and the upper portions of the heat storage chambers are connected in communication by a common combustion chamber. It relates to the room structure.
[0002]
[Prior art]
Conventionally, one method for improving gas decomposition efficiency in the above-described regenerative combustion apparatus is how long the combustion temperature range is taken. As a countermeasure for this, a method of enlarging the residence time by increasing the volume of the combustion chamber has been adopted.
[0003]
[Problems to be solved by the invention]
However, increasing the volume of the combustion chamber results in an increase in the size of the entire apparatus, which alone increases the manufacturing cost. Further, in the heat storage combustion apparatus, the temperature in the combustion chamber is raised by using a burner, so that heat is generated from one place where the burner is present, so that the temperature distribution is easily made in the combustion chamber. If the temperature distribution is made, the decomposition efficiency is lowered and it becomes difficult to control the temperature at which location.
[0004]
The present invention has been made in view of the above problems, and can extend the passage time of gas in the combustion chamber and eliminate uneven temperature distribution. As a result, gas decomposition efficiency can be improved. An object of the present invention is to provide a combustion chamber structure in a heat storage combustion apparatus that can reduce the manufacturing cost and save the space of the apparatus.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the combustion chamber structure in the heat storage combustion apparatus of the present invention has a partition wall for partitioning the heat storage chamber serving as the supply passage for the untreated gas and the exhaust passage for the treatment gas in parallel, and the upper portion of each combustion chamber. Combustion chamber structure in a heat storage combustion apparatus connected in communication by a common combustion chamber, and a set of four partitions that form a substantially vertical state above each partition wall in the combustion chamber and partition the combustion chamber to the left and right The two stirring plates facing the front-rear direction of the pair of stirring plates cross each other at the center when viewed from the front, and the two upper portions and the lower Each part forms an angle of 30 to 90 degrees, and the two stirring plates heading in the up-down direction intersect each other at the center when viewed from below, and the two stirring plates heading in the front-rear direction Two left and right parts that do not exist Respectively and forming an angle of 50 to 150 degrees.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall configuration diagram of a partly cutout of a heat storage combustion apparatus according to the present invention, and FIG. FIG. 3 is a detailed view of the stirring plate attached.
[0007]
The heat storage chambers 2, 2, 2 are erected in parallel by partitioning left and right by the partition walls 1, 1, and the heat storage bodies 3 are filled therein. A common combustion chamber 4 provided with a burner (not shown) is connected to the upper part of each of the heat storage chambers 2, 2, 2, and an untreated gas supply damper 5 is connected to the lower part of each of the heat storage chambers 2, 2, 2. And the exhaust damper 6 of processed gas is connected, respectively.
[0008]
Also, above each partition wall 1 in the combustion chamber 4 , as shown in FIG. 1, a set of four stirring plates 7, 7 , 7 that form a substantially vertical state and partition the combustion chamber 4 left and right. , 7 are fixedly arranged in four directions (up and down, front and back ), and the set of stirring plates 7, 7, 7, and 7 are respectively attached at angles.
[0009]
In addition, as shown in FIG. 3, the mounting angle of a set of stirring plates 7, 7, 7, and 7 is as indicated by arrows A-A (C) , B-B (B) , and C-C ( is the angle R1~R3 which is indicated by two). These angles are for stirring the gas passing through the combustion chamber 4 efficiently, the test and the simulation were repeated, and the following ranges were found to be suitable. That is, R1: 15 to 45 degrees, R2: 15 to 45 degrees, and R3: 50 to 150 degrees were suitable.
In other words, in FIG. 1, the two stirring plates 7, 7 heading in the front-rear direction among the pair of stirring plates 7, 7, 7, 7 cross each other at the center when viewed from the front, and The upper part and the lower part each form an angle of 30 to 90 degrees, and the two stirring plates 7 and 7 directed in the vertical direction intersect with each other at the center when viewed from below, and proceed in the front-rear direction. Two left portions and right portions where the two stirring plates 7 and 7 do not exist each form an angle of 50 to 150 degrees.
[0010]
In this configuration, untreated gas is introduced from below one of the heat storage chambers 2, 2, 2 by opening / closing control of each supply damper 5 and each exhaust damper 6 and preheated by the heat storage body 3. After that, it is supplied to the combustion chamber 4 for heat treatment, flows into the heat storage body 3 from above any one of the remaining heat storage chambers 2 and 2 and is exhausted through the exhaust damper 6 below.
[0011]
In addition, the gas introduced into the combustion chamber 4 as described above is efficiently stirred by passing between the four stirring plates 7, 7, 7, and 7, so that the temperature distribution is difficult to occur and the gas is retained. It turns out that the time is also long.
[0012]
【The invention's effect】
As apparent from the above description, in the present invention, in the combustion chamber, 4 to 8 stirring plates for partitioning the combustion chamber left and right are fixedly arranged in four directions above the partition walls, and each stirring plate is disposed. Since the combustion chamber structure is mounted at an angle, the gas flow is efficiently stirred, the temperature distribution becomes difficult, the residence time of the gas is prolonged, the gas decomposition efficiency is greatly improved, and the large combustion chamber is not required. It has an excellent effect such as helping to reduce the manufacturing cost.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a partly cutout of a heat storage combustion apparatus according to the present invention.
FIG. 2 is a right side view of FIG.
FIGS. 3A and 3B are detailed views (a), (b), (c), and (d) showing the installation of the stirring plate in the combustion chamber.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Partition wall 2 Thermal storage chamber 3 Thermal storage body 4 Combustion chamber 5 Supply damper 6 Exhaust damper 7 Stirring plate

Claims (1)

  1. 未処理ガスの供給通路および処理ガスの排気通路となる蓄熱室を仕切り壁をもって並列に仕切ると共に各燃焼室の上部を共通の燃焼室により連通接続した蓄熱燃焼装置における燃焼室構造であって、
    前記燃焼室(4)内における前記各仕切り壁(1)の上方に、ほぼ垂直状態を成して、該燃焼室(4)を左右に仕切る4枚一組の撹拌板(7、7、7、7)を四方に向けて固定配設し、一組の撹拌板(7、7、7、7)のうち前後方向へ向かう2枚の撹拌板(7、7)は、手前から見たとき中心で相互に交差して2個の上部分および下部分がそれぞれ30〜90度の角度を形成し、また、上下方向へ向かう2枚の撹拌板(7、7)は、下から見たとき中心で相互に交差して、前後方向へ向かう2枚の前記撹拌板(7、7)の存在しない2個の左部分および右部分がそれぞれ50〜150度の角度を形成することを特徴とする蓄熱燃焼装置における燃焼室構造。
    A combustion chamber structure in a heat storage combustion apparatus in which a heat storage chamber serving as an untreated gas supply passage and a processing gas exhaust passage is partitioned in parallel with a partition wall and the upper part of each combustion chamber is connected in communication with a common combustion chamber,
    Above each partition wall (1) in the combustion chamber (4), a set of four stirring plates (7, 7, 7) that form a substantially vertical state and partition the combustion chamber (4) left and right. 7) are fixedly arranged in four directions, and the two stirring plates (7, 7) heading in the front-rear direction among the pair of stirring plates (7, 7, 7, 7) are viewed from the front. The two upper and lower portions intersect each other at the center to form an angle of 30 to 90 degrees, and the two stirring plates (7, 7) directed in the vertical direction are viewed from below. Two left portions and right portions that do not have the two stirring plates (7, 7) that cross each other at the center and go in the front-rear direction form an angle of 50 to 150 degrees, respectively. Combustion chamber structure in a heat storage combustion device.
JP2002041339A 2002-02-19 2002-02-19 Combustion chamber structure in thermal storage combustion equipment Active JP3937307B2 (en)

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JP2007205609A (en) * 2006-01-31 2007-08-16 Kobelco Eco-Solutions Co Ltd Heat storage type deodorizing device
US9726373B2 (en) 2013-03-25 2017-08-08 Sintokogio, Ltd. Heat storage type waste gas purification apparatus

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