JP2001173946A - Regenerative burner - Google Patents
Regenerative burnerInfo
- Publication number
- JP2001173946A JP2001173946A JP35869599A JP35869599A JP2001173946A JP 2001173946 A JP2001173946 A JP 2001173946A JP 35869599 A JP35869599 A JP 35869599A JP 35869599 A JP35869599 A JP 35869599A JP 2001173946 A JP2001173946 A JP 2001173946A
- Authority
- JP
- Japan
- Prior art keywords
- combustion air
- heat storage
- flow
- storage body
- burner
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Air Supply (AREA)
- Gas Burners (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、蓄熱体の寿命の長
期化を図ることができるリジェネバーナに関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative burner capable of extending the life of a heat storage body.
【０００２】[0002]
【従来の技術】従来から、加熱炉や燃焼炉等の燃焼装置
には省エネルギを図ることを目的として、炉内で燃焼し
た排ガスの熱を回収するとともに、燃焼用空気を加熱す
るようバーナタイル内に蓄熱体を設けたリジェネバーナ
が知られている。この場合、前記蓄熱体としては、セラ
ミックやステンレス等の耐熱性金属をハニカム状にした
ものが通常用いられている。2. Description of the Related Art Conventionally, in order to save energy in a combustion apparatus such as a heating furnace or a combustion furnace, a burner tile is used to recover heat of exhaust gas burned in the furnace and heat combustion air. A regenerative burner in which a heat storage body is provided is known. In this case, as the heat storage body, a heat-resistant metal such as ceramic or stainless steel in a honeycomb shape is generally used.
【０００３】このうち、蓄熱体として耐熱性金属を用い
たものは、セラミックに比べて軽量化および大型化が可
能である、破壊強度が優れている、薄いため圧力損失が
少ない等の種々の利点を有しているものの、耐熱温度に
限界があるため使用温度条件に制限（約１０００℃以
下）があった。また、耐熱温度を越えて使用していると
熱変形や熱破壊して短期間で交換しなければならないと
いう問題点もあった。更には、耐熱温度近傍で使用して
いる場合でも、蓄熱体の外周部の熱損傷が激しく想定し
た使用期間を確保することができないという問題点もあ
った。Among them, those using a heat-resistant metal as a heat storage element have various advantages such as being lighter and larger than ceramics, having excellent breaking strength, and being low in pressure loss due to being thin. However, there is a limit in the operating temperature conditions (about 1000 ° C. or less) due to the limitation of the heat resistant temperature. In addition, there is also a problem that when used at a temperature exceeding the heat-resistant temperature, it must be replaced in a short period of time due to thermal deformation or thermal destruction. Furthermore, even when the heat storage body is used near the heat-resistant temperature, there is a problem that the thermal damage to the outer peripheral portion of the heat storage body is severe and the expected use period cannot be secured.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記のような
従来の問題点を解決して、軽量化および大型化が可能で
破壊強度にも優れ、また圧力損失も少ないことは勿論の
こと、使用温度に制限がなく、しかも蓄熱体の熱変形や
熱破壊を生じることなく長期間にわたって継続使用する
ことができるリジェネバーナを提供することを目的とし
て完成されたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and can be reduced in weight and size, has excellent breaking strength, and has a small pressure loss. The object of the present invention is to provide a regenerative burner which can be used continuously for a long period of time without any limitation on the use temperature and without causing thermal deformation or thermal destruction of the heat storage body.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明のリジェネバーナは、燃焼炉のバー
ナタイル内に耐熱性金属からなるハニカム状の蓄熱体を
設けたリジェネバーナにおいて、蓄熱体へ流入する燃焼
用空気が蓄熱体の中心部に比べて外周部へ多く流入する
ように燃焼用空気流入量の径方向流量分配を制御する流
量制御手段を設けたことを特徴とするものである。Means for Solving the Problems A regenerative burner according to the present invention, which has been made to solve the above-mentioned problems, is a regenerative burner in which a honeycomb-shaped heat storage body made of a heat-resistant metal is provided in a burner tile of a combustion furnace. A flow control means for controlling a radial flow rate distribution of the inflow of combustion air such that a larger amount of combustion air flowing into the heat storage body flows into the outer periphery than in the center of the heat storage body. It is.
【０００６】また前記流量制御手段が、蓄熱体へ供給さ
れる燃焼用空気の流路内に、蓄熱体の径方向に同心円状
の仕切りが設置されて蓄熱体の中心部に続く流路と蓄熱
体の外周部に続く流路の複数の流路に分割されていると
ともに、それぞれの流路内へ独立して燃焼用空気が流入
するよう構成されており、外周側の流路内へより多くの
燃焼用空気を流入することによって、燃焼用空気が蓄熱
体の中心部に比べ外周部へ多く流入するように燃焼用空
気流入量の径方向流量分配を制御しているものを請求項
２に係る発明とする。The flow rate control means is provided with a concentric partition in a radial direction of the heat storage element in a flow path of the combustion air supplied to the heat storage element. It is divided into a plurality of flow paths of the flow path following the outer periphery of the body, and it is configured such that combustion air flows into each flow path independently, so that more air flows into the outer flow path. The radial flow rate distribution of the combustion air inflow is controlled such that the combustion air flows into the outer periphery of the heat storage body more than the center by flowing the combustion air. It is such an invention.
【０００７】また前記流量制御手段が、蓄熱体へ供給さ
れる燃焼用空気の流路内に設置される流量制御板であ
り、該流量制御板により中心部を流通する燃焼用空気が
外周部に向け流れ方向を変化するよう構成されており、
外周側の流路内へより多くの燃焼用空気を流入すること
によって、燃焼用空気が蓄熱体中心部に比べて外周部へ
多く流入するように燃焼用空気流入量の径方向流量分配
を制御しているものを請求項３に係る発明とする。The flow rate control means is a flow rate control plate provided in a flow path of combustion air supplied to the regenerator, and the flow rate control plate causes the combustion air flowing through the central portion to flow to the outer peripheral portion. It is configured to change the flow direction toward
Controlling the radial flow rate distribution of combustion air inflow so that more combustion air flows into the outer circumference than from the heat storage center by flowing more combustion air into the outer flow path What is done is the invention according to claim 3.
【０００８】[0008]
【発明の実施の形態】以下に、図面を参照しつつ本発明
の好ましい実施の形態を示す。図面は、製鉄工場におけ
る溶鉄鍋（例えば取鍋）の内張り耐火物の乾燥加熱、ま
たは受鋼前、受銑前の予熱加熱に用いられる溶鉄鍋予熱
・乾燥設備に組み込まれる切り換え式のリジェネバーナ
を示すものである。図において、１は炉壁のバーナタイ
ル２０内に取り付けられたバーナ本体であり、このバー
ナ本体１は先端を炉内へ臨ませた燃料ノズル２と、該燃
料ノズル２を覆うバーナ外筒３からなり、前記燃料ノズ
ル２の前方部はバーナタイル２０内に装着したステンレ
スに代表される耐熱性金属からなるハニカム状の蓄熱体
４に挿入した状態となっている。この蓄熱体４は、炉内
で燃焼した排ガスの熱をバーナ外筒３より排出する際に
加熱されて蓄熱し、一方、バルブを切り換えてバーナ外
筒３より燃焼用空気を炉内へ送り込む際には蓄熱したエ
ネルギにより燃焼用空気を予熱してバーナの燃焼効率を
向上させることにより、省エネルギを図るものである。
なお、ここでいう切り換え式のリジェネバーナとは、炉
の対角線方向に一対のバーナを設置し、一方を燃焼状態
とし他方を排ガスの排出状態として一定時間燃焼した
後、今度は燃焼状態と排ガスの排出状態を交代して一定
時間燃焼し、これを交互に切り換えて行うタイプのもの
であり、図１は、その一対のうちの片側を示すものであ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. The drawing shows the switchable regenerative burner incorporated in the preheating and drying equipment of the molten iron pan used for drying and heating the refractory lining of a molten iron pan (eg, a ladle) in a steel mill, or for preheating before receiving steel and before receiving iron. It is shown. In the figure, reference numeral 1 denotes a burner main body mounted in a burner tile 20 of a furnace wall. The burner main body 1 includes a fuel nozzle 2 having a tip facing the furnace and a burner outer cylinder 3 covering the fuel nozzle 2. The front part of the fuel nozzle 2 is inserted into a honeycomb-shaped heat storage body 4 made of a heat-resistant metal typified by stainless steel and mounted in the burner tile 20. The heat storage body 4 is heated when the heat of the exhaust gas burned in the furnace is discharged from the burner outer cylinder 3 and stores the heat. On the other hand, when the valve is switched, the combustion air is sent from the burner outer cylinder 3 into the furnace. In this method, the combustion air is preheated by the stored energy to improve the combustion efficiency of the burner, thereby saving energy.
In addition, the switchable regenerative burner here means a pair of burners installed in the diagonal direction of the furnace, one of which is in a combustion state, and the other is in a state of exhaust gas discharge, and burns for a certain period of time. This is a type in which the discharge state is changed and combustion is performed for a fixed time, and this is alternately switched. FIG. 1 shows one side of the pair.
【０００９】そして、本発明においては蓄熱体４へ流入
する燃焼用空気が蓄熱体４の中心部に比べて外周部へ多
く流入するように燃焼用空気流入量の径方向流量分配を
制御する流量制御手段を設けた点に特徴的構成を有して
いる。これは、本発明者らが研究した結果、排ガスが蓄
熱体４に対しては外周部に多く流入して中心部に比べ昇
温しやすく、そのため外周部の方から酸化や熱変形が生
じ寿命を短くする要因となっており、また機械的にも外
周部は中心部に比べて周が長いため熱膨張代が大きくそ
れだけ変形する要素が大きい要因となっているというこ
とを究明した結果に基づくものである。従って、低温度
の燃焼用空気をバーナに流入させる際に、熱的な損傷を
受けやすい蓄熱体４の外周部を中心部に比べてより多く
の燃焼用空気が流入するようにすることで冷却効果を高
め、蓄熱体全体に均等に熱負荷が加わるようにし、従来
のような外周部における局部的な熱的損傷の発生を回避
して耐久性の向上を図るのである。In the present invention, the flow rate for controlling the radial flow rate distribution of the combustion air inflow so that the combustion air flowing into the regenerator 4 flows more into the outer periphery than the center of the regenerator 4. It has a characteristic configuration in that control means is provided. As a result of the research conducted by the present inventors, it has been found that the exhaust gas flows into the heat storage body 4 in a large amount into the outer peripheral portion and is more likely to be heated than the central portion. It is based on the results of research that the outer circumference is mechanically longer than the center, so the thermal expansion allowance is large and the element that deforms is large. Things. Therefore, when the low-temperature combustion air is caused to flow into the burner, cooling is performed by allowing more combustion air to flow into the outer peripheral portion of the heat storage body 4 which is easily thermally damaged as compared with the central portion. The effect is enhanced so that a thermal load is evenly applied to the entire heat storage body, and the occurrence of local thermal damage in the outer peripheral portion as in the related art is avoided to improve durability.
【００１０】前記流量制御手段として、図１のもので
は、蓄熱体４へ供給される燃焼用空気の流路内に、蓄熱
体の径方向に同心円状の仕切り５が設置されて蓄熱体４
の中心部に続く流路６ａと蓄熱体４の外周部に続く流路
６ｂの二つの流路に分割されているとともに、それぞれ
の流路内へ独立して燃焼用空気が流入するよう構成され
ており、外周側の流路６ｂ内へより多くの燃焼用空気を
流入することによって、燃焼用空気が蓄熱体４の中心部
に比べ外周部へ多く流入するように燃焼用空気流入量の
径方向流量分配を制御している。なお、前記流路６ａ、
６ｂにはそれぞれ燃焼用空気の流入量を調整するための
ダンパ７ａ、７ｂが設けられ、該ダンパ７ａ、７ｂの開
度を調整することによって燃焼用空気の流入量を任意に
変化させるよう構成してあり、図１(b) に示されるよう
に、ダンパ７ｂを全開としダンパ７ａを約半開とするこ
とで蓄熱体４の外周部へより多くの燃焼用空気を流入
し、冷却効果を高めている。As the flow rate control means, in FIG. 1, a partition 5 which is concentric in the radial direction of the heat storage element is provided in the flow path of the combustion air supplied to the heat storage element 4.
Is divided into two flow paths, a flow path 6a following the center of the heat storage body 4 and a flow path 6b following the outer periphery of the heat storage body 4, and is configured such that combustion air flows into each flow path independently. By flowing more combustion air into the flow path 6b on the outer peripheral side, the diameter of the combustion air inflow amount is set so that the combustion air flows into the outer peripheral portion more than the central portion of the heat storage body 4. Controls directional flow distribution. The flow path 6a,
6b are provided with dampers 7a, 7b for adjusting the inflow of combustion air, respectively, and by adjusting the degree of opening of the dampers 7a, 7b, the inflow of combustion air is arbitrarily changed. As shown in FIG. 1 (b), when the damper 7b is fully opened and the damper 7a is approximately half-opened, more combustion air flows into the outer periphery of the heat storage body 4 to enhance the cooling effect. I have.
【００１１】また、以上は切り換え式のリジェネバーナ
の場合について説明したが、セルフ型のリジェネバーナ
についても同様に適用することができる。セルフ型のリ
ジェネバーナとは、図２に示されるように、蓄熱体の後
端に接続する燃焼用空気供給ダクトをバーナ軸の周方向
に連続的あるいは間欠的に回転移動させることで、燃焼
用空気をダクトより蓄熱体の蓄熱された部位を経由して
予熱空気を供給するとともに、燃焼用空気の通過により
蓄熱体の抜熱された部位には高温排ガスが通過して蓄熱
するという一連の動作により１本のバーナで燃焼用空気
の予熱と蓄熱が可能なタイプのバーナをいう。In the above, the case of the switching type regenerative burner has been described. However, the present invention can be similarly applied to a self-type regenerative burner. As shown in FIG. 2, a self-type regenerative burner is a combustion air supply duct connected to the rear end of a heat storage body that is rotated continuously or intermittently in the circumferential direction of a burner shaft. A series of operations in which preheated air is supplied from the duct through the heat storage unit through the heat storage unit, and high-temperature exhaust gas passes through the heat storage unit where heat is removed by the passage of combustion air. Means a type of burner capable of preheating and storing heat of combustion air with one burner.
【００１２】具体的には図２に示されるように、バーナ
本体１は先端を炉内へ臨ませた燃料ノズル２の周囲に耐
熱性金属からなる蓄熱体４を炉壁のバーナタイル２０内
に組み込む形で設け、この蓄熱体４の後端に隣接してバ
ーナ外筒３の燃焼用空気供給口１１に連通するダクト１
２を燃料ノズル２の周方向に回転自在に設けるととも
に、バーナ外筒３に排ガス吸引口１３を設けるように構
成されている。そして、燃焼加熱に際しては、燃料ノズ
ル２の燃料供給口１４から燃料を燃料ノズル２の先端へ
供給すると同時に、燃焼用空気供給口１１からダクト５
へ燃焼用空気を供給し蓄熱体４を通過させ予熱して、燃
料ノズル２の先端へ供給することで燃料を燃焼し燃焼ガ
スを溶鉄鍋内（炉内）へ噴射し内張り耐火物を加熱す
る。一方、加熱後の溶鉄鍋内（炉内）の高温排ガス（燃
焼ガス）は、蓄熱体２の燃焼用空気通過部以外の部位を
通過して、その部位を蓄熱した後、排ガス吸引口１３よ
り外部へ放散する。次いで、ダクト１２をモータ１５で
駆動しバーナ軸を中心として周方向に回転し、蓄熱体４
の蓄熱部位に回転移動しつつ燃焼用空気をダクト１２か
ら蓄熱体４を通過させ常時安定した予熱空気を燃料ノズ
ル２へ供給するとともに、燃焼用空気の予熱により抜熱
された蓄熱部位には高温排ガスが通過して蓄熱する。以
上のように連続的あるいは間歇的にダクト５を回転さ
せ、蓄熱体４へ蓄えられた熱エネルギにより燃焼用空気
を予熱してバーナの燃焼効率を向上させることにより、
省エネルギを図るよう構成されている。Specifically, as shown in FIG. 2, the burner main body 1 has a heat storage body 4 made of a heat-resistant metal around a fuel nozzle 2 having a tip facing the inside of a furnace. A duct 1 which is provided in a built-in manner and communicates with the combustion air supply port 11 of the burner outer cylinder 3 adjacent to the rear end of the heat storage body 4
2 is provided so as to be rotatable in the circumferential direction of the fuel nozzle 2, and an exhaust gas suction port 13 is provided in the burner outer cylinder 3. At the time of combustion heating, fuel is supplied from the fuel supply port 14 of the fuel nozzle 2 to the tip of the fuel nozzle 2, and at the same time, the combustion air supply port 11 is
The combustion air is supplied to the fuel nozzle 4 and preheated by passing through the regenerator 4, and supplied to the tip of the fuel nozzle 2 to burn the fuel, inject the combustion gas into the molten iron pot (furnace), and heat the lining refractory. . On the other hand, the high-temperature exhaust gas (combustion gas) in the molten iron pot (inside the furnace) after heating passes through a portion of the regenerator 2 other than the combustion air passage portion, and after storing that portion, passes through the exhaust gas suction port 13. Dissipate outside. Next, the duct 12 is driven by the motor 15 to rotate in the circumferential direction about the burner axis, and
The combustion air passes through the regenerator 4 from the duct 12 while rotating and moving to the heat storage portion, and constantly stable preheated air is supplied to the fuel nozzle 2. The exhaust gas passes and stores heat. As described above, by continuously or intermittently rotating the duct 5 and preheating the combustion air with the heat energy stored in the heat storage body 4 to improve the combustion efficiency of the burner,
It is configured to save energy.
【００１３】そして、流量制御手段として、蓄熱体４へ
供給される燃焼用空気の流路１２ａ内に流量制御板１５
が設置されており、該流量制御板１５により中心部を流
通する燃焼用空気が外周部に向け流れ方向を変化するよ
う構成され、外周側の流路内へより多くの燃焼用空気を
流入することによって、燃焼用空気が蓄熱体中心部に比
べて外周部へ多く流入するように燃焼用空気流入量の径
方向流量分配を制御するものとなっている。As a flow control means, a flow control plate 15 is provided in the flow path 12a of the combustion air supplied to the heat storage unit 4.
The flow control plate 15 is configured to change the flow direction of the combustion air flowing through the central portion toward the outer peripheral portion, so that more combustion air flows into the outer peripheral flow path. Thus, the radial flow rate distribution of the inflow of combustion air is controlled so that the combustion air flows into the outer peripheral portion more than the central portion of the regenerator.
【００１４】以上のように構成したものは、蓄熱体４が
炉内で燃焼した排ガスの熱をバーナ外筒３より排出する
際に加熱されて蓄熱し、一方、バーナ外筒３を回転して
バーナ外筒３より燃焼用空気を炉内へ送り込む際には蓄
熱したエネルギにより燃焼用空気を予熱してバーナの燃
焼効率を向上させることにより、省エネルギを図りつつ
運転される点は従来のこの種のリジェネバーナと基本的
に同じである。そして本発明では、前記蓄熱体４へ流入
する燃焼用空気が蓄熱体４の中心部に比べて外周部へ多
く流入するように燃焼用空気流入量の径方向流量分配を
制御する流量制御手段が設けられているため、従来のよ
うに蓄熱体４の外周部のみが局部的に昇温することがな
い。即ち、蓄熱体４は排ガスの流通時には外周部のみが
局部的に昇温することとなるが、低温度の燃焼用空気を
流入する時には流量制御手段の作用で燃焼用空気は蓄熱
体４の中心部に比べて外周部へ多く流入するようにな
り、外周部の冷却が促進されることとなって、蓄熱体全
体が均等な温度分布なる。この結果、従来のように外周
部のみが局部的に昇温せず熱的損傷の発生も的確に回避
することができ、蓄熱体４の大幅な耐久性の向上が図ら
れることとなる。なお、本発明者らの実験によれば、継
続使用期間を５年以上保証することができ、従来に比べ
て約１０倍の寿命が得られることが確認できた。With the above-described structure, the heat storage body 4 is heated and stored when the heat of the exhaust gas burned in the furnace is discharged from the burner outer cylinder 3, while the heat storage body 4 rotates the burner outer cylinder 3. When the combustion air is sent from the burner outer cylinder 3 into the furnace, the combustion air is preheated by the stored energy to improve the combustion efficiency of the burner. It is basically the same as the seed regenerative burner. In the present invention, the flow rate control means for controlling the radial flow rate distribution of the combustion air inflow so that the combustion air flowing into the heat storage body 4 flows into the outer peripheral portion more than the central portion of the heat storage body 4 is provided. Since it is provided, only the outer peripheral portion of the heat storage body 4 does not locally rise in temperature as in the related art. In other words, only the outer peripheral portion of the regenerator 4 is locally heated when the exhaust gas flows, but when the low-temperature combustion air flows in, the combustion air flows to the center of the regenerator 4 by the action of the flow rate control means. As a result, more heat flows into the outer peripheral portion than in the portion, and cooling of the outer peripheral portion is promoted, so that the entire heat storage body has a uniform temperature distribution. As a result, unlike the related art, only the outer peripheral portion does not locally rise in temperature, and the occurrence of thermal damage can be accurately avoided, so that the durability of the heat storage body 4 is greatly improved. According to experiments by the present inventors, it has been confirmed that a continuous use period of 5 years or more can be guaranteed, and a life that is about 10 times as long as that of the related art can be obtained.
【００１５】[0015]
【実施例】燃料ガスとしてコークス炉ガスを用いる発熱
量４４５０kcal/m3(Normal) の切り換え式のリジェネバ
ーナを取鍋の内張り耐火物の乾燥加熱用バーナに用いて
寿命の測定を行った結果を表１に示す。バーナの基本的
な設計は図２に示すとおりであり、燃料ガス流量は５０
０m3(Normal)/h、空気比は１．３とした。また、転炉内
雰囲気の平均温度は１１００℃、蓄熱体吸引排ガスの平
均温度は１０００±５０℃、蓄熱体通過後排ガスの平均
温度（初期値）は３００℃とした。また、ハニカム状の
蓄熱体の設計条件は下記のとおりである。 材 質 ：ＳＵＳ４３０ 箔厚み ：５０μm メッシュ：１００セル／inch2 外 径 ：７８０mm 内 径 ：３８０mm 長 さ ：１５０mm また、流量制御板５は長さ（Ｌ）が７０mm、燃焼用空気
の流入時における流量制御板５の開き角度（θ）は３０
°に設定した。なお、蓄熱体の耐久性を評価する一つの
指標として、蓄熱体前後の熱間圧力損失値で評価し、初
期の熱間圧力損失値の約５倍の値を蓄熱体の耐熱限界と
した。EXAMPLE The life of a switchable regenerative burner with a heating value of 4450 kcal / m 3 (Normal) using coke oven gas as fuel gas was measured using a burner for drying and heating the refractory lining of a ladle. It is shown in Table 1. The basic design of the burner is as shown in FIG.
0 m 3 (Normal) / h, and the air ratio was 1.3. The average temperature of the atmosphere in the converter was 1100 ° C., the average temperature of the exhaust gas from the heat storage material was 1000 ± 50 ° C., and the average temperature (initial value) of the exhaust gas after passing through the heat storage material was 300 ° C. The design conditions of the honeycomb-shaped heat storage body are as follows. Material: SUS430 Foil thickness: 50 μm Mesh: 100 cells / inch 2 Outer diameter: 780 mm Inner diameter: 380 mm Length: 150 mm In addition, the flow control plate 5 has a length (L) of 70 mm, and a flow rate at the time of inflow of combustion air. The opening angle (θ) of the control plate 5 is 30
°. As one index for evaluating the durability of the heat storage body, the heat pressure loss value before and after the heat storage body was evaluated, and a value about 5 times the initial hot pressure loss value was set as the heat resistance limit of the heat storage body.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【発明の効果】以上の説明からも明らかなように、本発
明は軽量化および大型化が可能で破壊強度にも優れ、ま
た圧力損失も少ないことは勿論のこと、使用温度に制限
がなく、しかも蓄熱体の熱変形や熱破壊を生じることな
く長期間にわたって継続使用することができるものであ
る。よって本発明は従来の問題点を一掃したリジェネバ
ーナとして、産業の発展に寄与するところは極めて大で
ある。As is apparent from the above description, the present invention can be reduced in weight and size, has excellent breaking strength, has a small pressure loss, and has no limitation on the operating temperature. Moreover, it can be used continuously for a long period of time without causing thermal deformation or thermal destruction of the heat storage body. Therefore, the present invention greatly contributes to industrial development as a regenerative burner that has eliminated the conventional problems.
【図１】本発明の実施の形態を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】その他の実施の形態を示す断面図である。FIG. 2 is a cross-sectional view showing another embodiment.
１ バーナ本体 ２ 燃料ノズル ３ バーナ外筒 ４ 蓄熱体 ５ 同心円状の仕切り 6a 蓄熱体の中心部に続く流路 6b 蓄熱体の外周部に続く流路 15 流量制御板 20 バーナタイル DESCRIPTION OF SYMBOLS 1 Burner main body 2 Fuel nozzle 3 Burner outer cylinder 4 Heat storage body 5 Concentric partition 6a Flow path following the center of heat storage body 6b Flow path following the outer periphery of heat storage body 15 Flow control plate 20 Burner tile
Claims (3)
らなるハニカム状の蓄熱体を設けたリジェネバーナにお
いて、蓄熱体へ流入する燃焼用空気が蓄熱体の中心部に
比べて外周部へ多く流入するように燃焼用空気流入量の
径方向流量分配を制御する流量制御手段を設けたことを
特徴とするリジェネバーナ。In a regenerative burner in which a honeycomb-shaped heat storage body made of a heat-resistant metal is provided in a burner tile of a combustion furnace, more combustion air flows into the heat storage body toward an outer peripheral portion than a central portion of the heat storage body. A regenerative burner provided with a flow control means for controlling a radial flow distribution of a combustion air inflow amount so as to flow.
焼用空気の流路内に、蓄熱体の径方向に同心円状の仕切
りが設置されて蓄熱体の中心部に続く流路と蓄熱体の外
周部に続く流路の複数の流路に分割されているととも
に、それぞれの流路内へ独立して燃焼用空気が流入する
よう構成されており、外周側の流路内へより多くの燃焼
用空気を流入することによって、燃焼用空気が蓄熱体の
中心部に比べ外周部へ多く流入するように燃焼用空気流
入量の径方向流量分配を制御している請求項１に記載の
リジェネバーナ。2. A flow control device comprising: a flow path for combustion air supplied to a heat storage element; a concentric partition arranged in a radial direction of the heat storage element; It is divided into a plurality of flow paths of the flow path following the outer periphery of the body, and it is configured such that combustion air flows into each flow path independently, so that more air flows into the outer flow path. The radial flow rate distribution of the combustion air inflow is controlled such that the combustion air flows into the outer peripheral portion of the heat storage body more than the central portion by flowing the combustion air. Regenerating burner.
焼用空気の流路内に設置される流量制御板であり、該流
量制御板により中心部を流通する燃焼用空気が外周部に
向け流れ方向を変化するよう構成されており、外周側の
流路内へより多くの燃焼用空気を流入することによっ
て、燃焼用空気が蓄熱体中心部に比べて外周部へ多く流
入するように燃焼用空気流入量の径方向流量分配を制御
している請求項１に記載のリジェネバーナ。3. The flow rate control means is a flow rate control plate installed in a flow path of combustion air supplied to the regenerator, and the flow rate control plate causes the combustion air flowing through the central portion to flow to the outer peripheral portion. It is configured to change the flow direction toward the outside, so that more combustion air flows into the outer peripheral portion than the central portion of the regenerator by flowing more combustion air into the outer flow path. The regenerative burner according to claim 1, wherein a radial flow rate distribution of the combustion air inflow is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35869599A JP3721032B2 (en) | 1999-12-17 | 1999-12-17 | Regenerative burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35869599A JP3721032B2 (en) | 1999-12-17 | 1999-12-17 | Regenerative burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001173946A true JP2001173946A (en) | 2001-06-29 |
| JP3721032B2 JP3721032B2 (en) | 2005-11-30 |
Family
ID=18460641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35869599A Expired - Fee Related JP3721032B2 (en) | 1999-12-17 | 1999-12-17 | Regenerative burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3721032B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019526026A (en) * | 2016-07-08 | 2019-09-12 | ノヴァ ケミカルズ（アンテルナショナル）ソシエテ アノニム | Metal burner tile |
-
1999
- 1999-12-17 JP JP35869599A patent/JP3721032B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019526026A (en) * | 2016-07-08 | 2019-09-12 | ノヴァ ケミカルズ（アンテルナショナル）ソシエテ アノニム | Metal burner tile |
| JP2019527332A (en) * | 2016-07-08 | 2019-09-26 | ノヴァ ケミカルズ（アンテルナショナル）ソシエテ アノニム | Metal burner components |
| US11885489B2 (en) | 2016-07-08 | 2024-01-30 | Nova Chemicals (International) S.A. | Metallic burner tiles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3721032B2 (en) | 2005-11-30 |
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