JPH08178564A - Honeycomb heat storage unit - Google Patents
Honeycomb heat storage unitInfo
- Publication number
- JPH08178564A JPH08178564A JP32209494A JP32209494A JPH08178564A JP H08178564 A JPH08178564 A JP H08178564A JP 32209494 A JP32209494 A JP 32209494A JP 32209494 A JP32209494 A JP 32209494A JP H08178564 A JPH08178564 A JP H08178564A
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb
- heat storage
- exhaust gas
- storage body
- honeycomb structure
- 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
- 238000005338 heat storage Methods 0.000 title claims abstract description 61
- 239000007789 gas Substances 0.000 claims abstract description 71
- 239000000919 ceramic Substances 0.000 claims abstract description 31
- 239000002918 waste heat Substances 0.000 claims abstract description 7
- 230000007797 corrosion Effects 0.000 claims description 11
- 238000005260 corrosion Methods 0.000 claims description 11
- 229910052878 cordierite Inorganic materials 0.000 claims description 9
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical group [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000002411 adverse Effects 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
Landscapes
- Air Supply (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数のセラミックスハ
ニカム構造体を組み合わせてなり、貫通孔に排ガスと被
加熱ガスとを交互に通過させて排ガス中の廃熱を回収す
るハニカム状蓄熱体に関し、特に高温および腐食性の排
ガスに対して好適に使用できるハニカム状蓄熱体に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb heat storage body which is composed of a plurality of ceramic honeycomb structures and which allows exhaust gas and heated gas to alternately pass through through holes to recover waste heat in the exhaust gas. In particular, the present invention relates to a honeycomb heat storage body that can be suitably used for high temperature and corrosive exhaust gas.
【０００２】[0002]
【従来の技術】従来、鉄鋼炉、アルミ溶解炉、ガラス溶
解炉のような一般産業用に用いられる燃焼加熱炉におい
て、燃焼ガスの廃熱を利用し、燃焼用空気を予熱して熱
効率を高めるために使用される蓄熱体としては、特開昭
５８−２６０３６号公報に記載の如くセラミック球を利
用するもの、または特開平４−２５１１９０号公報に記
載の如くハニカム状の構造体を利用するもの等が知られ
ていた。2. Description of the Related Art Conventionally, in combustion heating furnaces used for general industries such as steel furnaces, aluminum melting furnaces and glass melting furnaces, waste heat of combustion gas is used to preheat combustion air to improve thermal efficiency. As a heat storage material used for this purpose, a ceramic sphere as described in JP-A-58-26036 or a honeycomb-shaped structure as described in JP-A-4-251190 is used. Etc were known.
【０００３】上述した従来の蓄熱体では、まず高温の燃
焼排ガスと球状またはハニカム状の蓄熱体とを接触させ
て蓄熱体中に燃焼排ガスの熱を蓄熱させ、次に低温の被
加熱ガスと蓄熱した蓄熱体とを接触させて被加熱ガスを
加熱することにより、燃焼排ガスの廃熱を効率よく利用
している。In the above conventional heat storage body, first, the high temperature combustion exhaust gas and the spherical or honeycomb heat storage body are brought into contact with each other to store the heat of the combustion exhaust gas in the heat storage body, and then the low temperature heated gas and the heat storage body. The waste heat of the combustion exhaust gas is efficiently used by heating the gas to be heated by bringing it into contact with the heat storage body.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述し
た蓄熱体のうち、セラミック球を使用する場合には、セ
ラミック球の通気抵抗が大きくなりセラミック球と通気
ガスとの接触面積が小さいため、効果的に熱交換を行う
ことができず、蓄熱体を大きな構成とする必要がある問
題があった。一方、蓄熱体をハニカム状とした場合、体
積に比し幾何学的比表面積が大きいため、コンパクトな
大きさで効果的な熱交換を行うことができる。しかしな
がら、従来のハニカム構造体は単一のハニカム構造体か
ら構成されているため、耐熱衝撃性の点および耐腐食性
の点で問題があった。However, when the ceramic spheres are used among the above-mentioned heat storage bodies, the ventilation resistance of the ceramic spheres increases and the contact area between the ceramic spheres and the ventilation gas is small, which is effective. However, there is a problem in that the heat storage cannot be performed and the heat storage body needs to have a large structure. On the other hand, when the heat storage body has a honeycomb shape, the geometric specific surface area is larger than the volume, so that the heat exchange can be effectively performed in a compact size. However, since the conventional honeycomb structure is composed of a single honeycomb structure, there is a problem in terms of thermal shock resistance and corrosion resistance.
【０００５】上述した耐熱衝撃性および耐腐食性の問題
を解消するために、複数のハニカム構造体を組み合わせ
てなり、貫通孔に排ガスと被加熱ガスとを交互に通過さ
せて排ガス中の廃熱を回収するハニカム状蓄熱体も提案
されている。しかしながら、このハニカム状蓄熱体は、
複数の直方体形状のハニカム構造体を単に積み重ねて構
成することが多いため、ハニカム構造体中を流れる排ガ
スの速度が例えば１０ｍ／ｓのような速度となると、ハ
ニカム構造体の一部が脱落したりハニカム構造体が振動
を受け破損する恐れがある問題があった。また、熱衝撃
や腐食により破損する可能性もあり、ハニカム構造体が
破損した場合は、破損したハニカム構造体の破片が燃焼
室に飛び込み製品に悪影響を与えたり、ハニカム構造体
の貫通孔を塞ぎ圧損を上昇させてハニカム状蓄熱体に悪
影響を与える問題もあった。In order to solve the above-mentioned problems of thermal shock resistance and corrosion resistance, a plurality of honeycomb structures are combined, and exhaust gas and heated gas are alternately passed through the through-holes to dissipate waste heat in the exhaust gas. A honeycomb-shaped heat storage body for recovering is also proposed. However, this honeycomb heat storage body,
Since it is often the case that a plurality of rectangular parallelepiped honeycomb structures are simply stacked, when the velocity of the exhaust gas flowing through the honeycomb structure reaches a velocity of, for example, 10 m / s, a part of the honeycomb structure may drop off. There is a problem that the honeycomb structure may be damaged by vibration. Also, there is a possibility of damage due to thermal shock or corrosion, and when the honeycomb structure is damaged, the broken pieces of the honeycomb structure jump into the combustion chamber and adversely affect the product, or block the through holes of the honeycomb structure. There is also a problem that the pressure loss is increased and the honeycomb heat storage body is adversely affected.
【０００６】本発明の目的は上述した課題を解消して、
排ガスによるハニカム構造体の脱落がなく、また万一ハ
ニカム構造体が破損しても製品への悪影響のないハニカ
ム状蓄熱体を提供しようとするものである。The object of the present invention is to solve the above problems,
An object of the present invention is to provide a honeycomb-shaped heat storage body which does not drop out of the honeycomb structure due to exhaust gas and has no adverse effect on the product even if the honeycomb structure is damaged.
【０００７】[0007]
【課題を解決するための手段】本発明のハニカム状蓄熱
体は、複数のハニカム構造体を組み合わせてなり、貫通
孔に排ガスと被加熱ガスとを交互に通過させて排ガス中
の廃熱を回収するハニカム状蓄熱体において、ハニカム
構造体を固定するセラミックス製外囲いを設けることを
特徴とするものである。The honeycomb heat storage body of the present invention is formed by combining a plurality of honeycomb structures, and exhaust gas and heated gas are alternately passed through the through holes to recover waste heat in the exhaust gas. In the above-mentioned honeycomb heat storage body, a ceramic enclosure for fixing the honeycomb structure is provided.
【０００８】[0008]
【作用】上述した構成において、組み合わせて構成した
複数のハニカム構造体の外周に設けたセラミックス製外
囲いが、複数のハニカム構造体を所定の位置に固定す
る。そのため、排ガスの流速が速くてもハニカム構造体
の脱落はない。また、ハニカム構造体の一部が破損して
もハニカム状蓄熱体としての形状を保つことができ、ハ
ニカム構造体の破片が燃焼室へ飛び込んだり貫通孔を塞
いだりすることも防止できる。In the above-mentioned structure, the ceramic enclosure provided on the outer circumference of the plurality of honeycomb structures constructed in combination fixes the plurality of honeycomb structures at predetermined positions. Therefore, the honeycomb structure does not fall off even if the flow velocity of the exhaust gas is high. Further, even if a part of the honeycomb structure is damaged, the shape of the honeycomb heat storage body can be maintained, and it is possible to prevent fragments of the honeycomb structure from jumping into the combustion chamber or blocking the through holes.
【０００９】なお、外囲いをセラミックス製と限定した
のは、ハニカム状蓄熱体が曝される排ガスは高温かつ腐
食性の排ガスであることが多いため、耐熱性および耐腐
食性を有するセラミックスから構成することが有効なた
めである。また、セラミックス製外囲いの形状は特に限
定するものでないが、板状のセラミックスを並べたも
の、一体型の枠を枠を重ねたもの、角柱を積み重ねたも
のを使用することが有効である。さらに、外囲いのセラ
ミックスの材質としては、ハニカム状蓄熱体の使用温
度、使用条件によって異なるが、ＳｉＣ、コージェライ
ト、Ｓｉ含浸ＳｉＣを用いることが好ましく、中でもＳ
ｉ含浸ＳｉＣは熱伝導率が優れているため温度分布がつ
きづらく十分な耐熱衝撃性を得ることができるためさら
に好ましい。また、Ｓｉ含浸ＳｉＣは耐食性に優れてい
るため、腐食性ガスの多い所でも十分使用に耐える。The outer enclosure is limited to ceramics because the exhaust gas to which the honeycomb-shaped heat storage body is exposed is often high-temperature and corrosive exhaust gas. This is because it is effective. The shape of the ceramic enclosure is not particularly limited, but it is effective to use plate-shaped ceramics arranged side by side, a frame in which integral frames are stacked, or a stack of prisms. Further, as the material of the ceramics of the outer enclosure, although SiC, cordierite, or Si-impregnated SiC is preferably used, among them, S, although it depends on the operating temperature and operating conditions of the honeycomb heat storage body.
Since i-impregnated SiC has excellent thermal conductivity, it is more preferable because the temperature distribution hardly occurs and sufficient thermal shock resistance can be obtained. In addition, since Si-impregnated SiC has excellent corrosion resistance, it can be sufficiently used even in a place where there are many corrosive gases.
【００１０】さらに、組み合わせて構成した複数のハニ
カム構造体の構成についても本発明では特に限定するも
のでないが、少なくとも高温の排ガスに接する面の外周
部分のハニカム構造体の形状が中心部分のハニカム構造
体の形状よりも小さい構成をとると、耐熱性が向上し好
ましいとともに、高温の排ガスに接する側を耐腐食性セ
ラミックスからなるハニカム構造体で構成するととも
に、低温の被加熱ガスに接する側を主結晶相がコージェ
ライトからなるハニカム構造体で構成すると、耐腐食性
が向上し好ましい。Further, the structure of a plurality of honeycomb structures constructed by combining them is not particularly limited in the present invention, but at least the outer peripheral part of the surface in contact with the high temperature exhaust gas has a central part in the shape of the honeycomb structure. It is preferable to have a structure smaller than the shape of the body because the heat resistance is improved, and the side in contact with high temperature exhaust gas is composed of a honeycomb structure made of corrosion resistant ceramics, and the side in contact with low temperature heated gas is mainly It is preferable to use a honeycomb structure having a crystal phase of cordierite because the corrosion resistance is improved.
【００１１】[0011]
【実施例】図１は本発明のハニカム状蓄熱体の一例の構
成を示す図であり、図１（ａ）はハニカム状蓄熱体１の
排ガス流通部１ａの一例の構成を示し、図１（ｂ）はハ
ニカム状蓄熱体１の一例の構成を示している。まず、ハ
ニカム状蓄熱体１の排ガス流通部１ａは、図１（ａ）に
示すように、直方体形状のハニカム構造体２を、一方向
に貫通孔３から構成される流路が揃うように積み重ねて
構成されている。各ハニカム構造体２は、主結晶相がア
ルミナ、ジルコニア、ムライト、ＳｉＣ、Ｓｉ3 Ｎ4 、
コージェライト、アルミニウムチタネートから選ばれた
一つの材料からなると好ましい。また、図１（ｂ）に示
すように、ハニカム状蓄熱体１は、排ガス流通部１ａの
外周にハニカム構造体２を固定するセラミックス製外囲
い５を設けて構成している。EXAMPLE FIG. 1 is a diagram showing an example of the configuration of a honeycomb heat storage body of the present invention, and FIG. 1 (a) shows an example of the configuration of an exhaust gas flow section 1a of the honeycomb heat storage body 1, and FIG. b) shows an example of the configuration of the honeycomb heat storage body 1. First, as shown in FIG. 1 (a), the exhaust gas flow portion 1 a of the honeycomb heat storage body 1 is formed by stacking rectangular parallelepiped honeycomb structures 2 in such a manner that the flow passages including the through holes 3 are aligned in one direction. Is configured. The main crystal phase of each honeycomb structure 2 is alumina, zirconia, mullite, SiC, Si 3 N 4 ,
It is preferably made of one material selected from cordierite and aluminum titanate. Further, as shown in FIG. 1B, the honeycomb heat storage body 1 is configured by providing a ceramic enclosure 5 for fixing the honeycomb structure 2 on the outer periphery of the exhaust gas circulation portion 1a.
【００１２】図２〜図５はそれぞれ図１に示すハニカム
状蓄熱体１の排ガス流通部１ａの外周に設ける外囲い５
の一例の構成を示す図である。図２に示す例では、バス
ケット１１内に小型のセラミックス板１２を複数はめ込
んで外囲い５を構成している。セラミックス板１２の高
さは、排ガス流通部１ａの高さとほぼ同じ高さに構成す
るとともに、セラミックス板１２の幅は、複数のセラミ
ックス板１２を並べて排ガス流通部１ａの各辺の幅とな
るよう構成している。図３に示す例では、一体型のセラ
ミックス製の枠１３を積み重ねて外囲い５を構成してい
る。枠１３の高さは、複数の枠１３を積み重ねて排ガス
流通部１ａの高さとほぼ同じ高さとなるよう構成してい
る。また、枠１３は一体型であるため、積み重ねるだけ
で外囲い５を形成できる。2 to 5 are outer enclosures 5 provided on the outer periphery of the exhaust gas circulation portion 1a of the honeycomb heat storage body 1 shown in FIG. 1, respectively.
It is a figure which shows the structure of an example. In the example shown in FIG. 2, a plurality of small ceramic plates 12 are fitted in the basket 11 to form the outer enclosure 5. The height of the ceramics plate 12 is configured to be substantially the same as the height of the exhaust gas circulation portion 1a, and the width of the ceramics plate 12 is such that a plurality of ceramics plates 12 are arranged side by side to each side of the exhaust gas circulation portion 1a. I am configuring. In the example shown in FIG. 3, the outer enclosure 5 is configured by stacking the integral ceramic frames 13. The height of the frame 13 is configured such that a plurality of frames 13 are stacked and the height is substantially the same as the height of the exhaust gas circulation portion 1a. Further, since the frame 13 is an integral type, the outer enclosure 5 can be formed simply by stacking the frames.
【００１３】図４に示す例では、止め具１４でセラミッ
クス板１５を固定して枠を形成し、この枠を積み重ねて
外囲い５を形成している。止め具１４は、図４（ｂ）に
その一例を示すように、Ｌ字形の止め具本体２１にＬ字
形の溝部２２を形成して構成している。そのため、Ｌ字
形の溝部２２の一辺に一方のセラミックス板１５を差し
込み、他方の辺に他方のセラミックス板１５を差し込む
ことで、外囲い５を形成できる。図５に示す例では、両
端に穴１６を開けた角柱１７を井桁形状に組み、穴１６
に棒１８を差し込むことで外囲い５を構成している。本
例では、外囲い５が排ガス流通部１ａの外周全体に形成
することができないが、複数のハニカム構造体２からな
る排ガス流通部１を固定するには十分であり、本願発明
の外囲い５となりうる。In the example shown in FIG. 4, the ceramic plate 15 is fixed by the stoppers 14 to form a frame, and the frames are stacked to form the outer enclosure 5. The stopper 14 is configured by forming an L-shaped groove portion 22 in an L-shaped stopper main body 21 as shown in an example in FIG. 4B. Therefore, the outer enclosure 5 can be formed by inserting one ceramic plate 15 into one side of the L-shaped groove portion 22 and inserting the other ceramic plate 15 into the other side. In the example shown in FIG. 5, the prisms 17 having holes 16 at both ends are assembled in a cross beam shape to form holes 16
The outer enclosure 5 is configured by inserting the rod 18 into the. In this example, the outer enclosure 5 cannot be formed on the entire outer periphery of the exhaust gas circulation portion 1a, but it is sufficient to fix the exhaust gas circulation portion 1 composed of the plurality of honeycomb structures 2, and the outer enclosure 5 of the present invention. Can be.
【００１４】図２〜図５に示すいずれの外囲い５も、そ
の内部の空間に図１に示す構成の排ガス流通部１ａを設
けることで、本発明のハニカム状蓄熱体を構成してい
る。また、外囲い５はセラミックスから構成され、セラ
ミックスの材質としてはＳｉＣ、コージェライト、Ｓｉ
含浸ＳｉＣを用いることが好ましく、中でもＳｉ含浸Ｓ
ｉＣを使用することがさらに好ましい。このように外囲
い５をセラミックスで構成することで、外囲い５自体に
耐熱性、耐腐食性を持たすことができ、それにより高温
の排ガスや腐食性の排ガス中でも本発明のハニカム状蓄
熱体を使用することができる。なお、外囲い５のセラミ
ックスの材質は、ハニカム状蓄熱体の使用温度や使用条
件に応じて使い分けることが好ましい。その使い分け
は、以下の表１を参照して行うことが好ましい。Each of the outer enclosures 5 shown in FIGS. 2 to 5 is provided with the exhaust gas circulation portion 1a having the configuration shown in FIG. 1 in the inner space thereof to form the honeycomb heat storage body of the present invention. The outer enclosure 5 is made of ceramics, and the material of the ceramics is SiC, cordierite, Si.
It is preferable to use impregnated SiC, especially Si-impregnated S
It is further preferred to use iC. By constructing the outer enclosure 5 with ceramics in this way, the outer enclosure 5 itself can be provided with heat resistance and corrosion resistance, whereby the honeycomb heat storage body of the present invention can be used even in high-temperature exhaust gas and corrosive exhaust gas. Can be used. The ceramic material of the outer enclosure 5 is preferably selected according to the operating temperature and operating conditions of the honeycomb heat storage body. The proper use is preferably made with reference to Table 1 below.
【００１５】[0015]
【表１】 [Table 1]
【００１６】本発明の最大の特徴は、ハニカム状蓄熱体
１を複数のハニカム構造体２を組み合わせて好ましくは
積み重ねて構成される排ガス流通部１ａの外周に所定の
外囲い５を設けたことであり、ハニカム構造体２の構成
はどのようであっても良いが、以下の構成をとると耐熱
性、耐腐食性の点でさらに好ましい。The greatest feature of the present invention is that a predetermined outer enclosure 5 is provided on the outer periphery of the exhaust gas flow section 1a which is formed by combining a plurality of honeycomb heat storage bodies 1 in combination with a plurality of honeycomb heat storage bodies 2. The honeycomb structure 2 may have any structure, but the following structure is more preferable in terms of heat resistance and corrosion resistance.
【００１７】図６は本発明のハニカム状蓄熱体１の排ガ
ス流通部１ａの好適例を示す図である。図６に示す例に
おいて、ハニカム状蓄熱体１の排ガス流通部１ａは、中
心部分３２とこの中心部分３２の外周全体に形成された
外周部分３３とから構成されている。中心部分３２は、
例えばコージェライトからなる直方体形状のハニカム構
造体３４を、一方向に貫通孔３５から構成される流路が
揃うよう複数個積み重ねて構成されている。外周部分３
３は、中心部分３２のハニカム構造体３４の形状よりも
小さい形状を有し、中心部分３２と同じように一方向に
貫通孔３７から構成される流路が揃うよう複数個積み重
ねて構成されている。図６に示す構成の排ガス流通部１
ａでは、特に耐熱性を良好にすることができる。FIG. 6 is a diagram showing a preferred example of the exhaust gas circulation portion 1a of the honeycomb heat storage body 1 of the present invention. In the example shown in FIG. 6, the exhaust gas circulation portion 1a of the honeycomb heat storage body 1 is composed of a central portion 32 and an outer peripheral portion 33 formed on the entire outer periphery of the central portion 32. The central portion 32 is
For example, a plurality of rectangular parallelepiped honeycomb structures 34 made of cordierite are stacked so that the channels formed by the through holes 35 are aligned in one direction. Outer part 3
3 has a shape smaller than the shape of the honeycomb structure 34 of the central portion 32, and is formed by stacking a plurality of channels so that the flow passages composed of the through holes 37 are aligned in one direction like the central portion 32. There is. Exhaust gas distribution unit 1 having the configuration shown in FIG.
With a, heat resistance can be particularly improved.
【００１８】図７は本発明のハニカム状蓄熱体１の排ガ
ス流通部１ａの他の好適例を示す図である。図７に示す
例において、ハニカム状蓄熱体１の排ガス流通部１ａ
は、主結晶相がアルミナ、ジルコニア、ムライト、Ｓｉ
Ｃ、Ｓｉ3 Ｎ4 から選ばれた一つの材料からなる直方体
形状の耐腐食性ハニカム構造体４２と、主結晶相がコー
ジェライトからなる直方体形状のコージェライトハニカ
ム構造体４３とを、一方向に貫通孔４４から構成される
流路が揃うように積み重ねて構成されている。図７に示
す構成の排ガス流通部１ａでは、特に耐腐食性を良好に
することができる。FIG. 7 is a view showing another preferred example of the exhaust gas flow section 1a of the honeycomb heat storage body 1 of the present invention. In the example shown in FIG. 7, the exhaust gas flow portion 1a of the honeycomb heat storage body 1
Has a main crystal phase of alumina, zirconia, mullite, Si
A rectangular parallelepiped-shaped corrosion-resistant honeycomb structure 42 made of one material selected from C and Si 3 N 4 and a rectangular parallelepiped-shaped cordierite honeycomb structure 43 having a main crystal phase of cordierite in one direction. The through-holes 44 are stacked so that the flow paths are aligned. In the exhaust gas flow section 1a having the configuration shown in FIG. 7, the corrosion resistance can be particularly improved.
【００１９】図８は本発明のハニカム状蓄熱体を使用し
た熱交換体を燃焼加熱炉の燃焼室に設置した例を示す図
である。図８に示す例において、５１は燃焼室、５２−
１、５２−２は本発明のハニカム状蓄熱体、５３−１、
５３−２はハニカム状蓄熱体５２−１、５２−２から構
成される熱交換体、５４−１、５４−２は熱交換体５３
−１、５３−２に設けた燃料投入口である。図８に示す
例において、２個の熱交換体５３−１、５３−２を設け
たのは、一方が高温の排ガスを流すことにより蓄熱を行
っているとき、同時に他方が低温の被加熱ガスを加熱で
きるよう構成して、熱交換を効率的に行うためである。FIG. 8 is a diagram showing an example in which a heat exchange element using the honeycomb heat storage element of the present invention is installed in the combustion chamber of a combustion heating furnace. In the example shown in FIG. 8, 51 is a combustion chamber, 52-
1, 52-2 are honeycomb heat storage bodies of the present invention, 53-1,
53-2 is a heat exchange body composed of honeycomb heat storage bodies 52-1 and 52-2, and 54-1 and 54-2 are heat exchange bodies 53.
-1, 53-2 are the fuel inlets. In the example shown in FIG. 8, the two heat exchangers 53-1 and 53-2 are provided because one of them is storing heat by flowing a high temperature exhaust gas, and the other is a low temperature heated gas. This is because heat can be efficiently exchanged by being configured to be able to heat.
【００２０】図８に示す例では、まず、図中矢印で示し
たように、予めハニカム状蓄熱体５２−１に蓄熱した熱
交換体５３−１に被加熱ガスである空気を供給すると同
時に燃料投入口５４−１から燃料を投入するとともに、
熱交換体５３−２には燃焼室５１内の高温の排ガスを通
過させる。この状態で、空気は予熱され燃料とともに燃
焼室５１へ供給されるとともに、熱交換体５３−２のハ
ニカム状蓄熱体５２−２は蓄熱される。In the example shown in FIG. 8, first, as indicated by the arrow in the figure, air as a gas to be heated is supplied to the heat exchange element 53-1 which has previously stored heat in the honeycomb heat storage element 52-1 and at the same time fuel is supplied. While charging fuel from the charging port 54-1,
The high temperature exhaust gas in the combustion chamber 51 is passed through the heat exchanger 53-2. In this state, the air is preheated and supplied to the combustion chamber 51 together with the fuel, and the honeycomb heat storage body 52-2 of the heat exchange body 53-2 stores heat.
【００２１】次に、ガスの流れを切り換えて、図中矢印
と反対方向にガスを流れるようにして、熱交換体５３−
２に被加熱ガスである空気を流し燃料投入口２４−２か
ら燃料を投入するとともに、熱交換体５３−２には燃焼
室５１内の高温の排ガスを通過させる。以上の工程を連
続的に繰り返すことにより、熱交換を行うことができ
る。Next, by switching the flow of gas so that the gas flows in the direction opposite to the arrow in the figure, the heat exchanger 53-
Air as a gas to be heated is caused to flow through 2 to feed the fuel from the fuel inlet 24-2, and the high temperature exhaust gas in the combustion chamber 51 is passed through the heat exchanger 53-2. Heat exchange can be performed by continuously repeating the above steps.
【００２２】[0022]
【発明の効果】以上の説明から明らかなように、本発明
によれば、組み合わせて構成した複数のハニカム構造体
の外周にセラミックス製外囲いを設けたため、複数のハ
ニカム構造体を所定の位置に固定でき、排ガスの流速が
速くてもハニカム構造体の脱落はない。また、ハニカム
構造体の一部が破損してもハニカム状蓄熱体としての形
状を保つことができ、ハニカム構造体の破片が燃焼室へ
飛び込んだり貫通孔を塞いだりすることも防止できる。As is apparent from the above description, according to the present invention, since the ceramic enclosure is provided on the outer periphery of the plurality of honeycomb structures formed by combining the plurality of honeycomb structures, the plurality of honeycomb structures are arranged at predetermined positions. The honeycomb structure can be fixed and the honeycomb structure does not fall off even if the flow rate of the exhaust gas is high. Further, even if a part of the honeycomb structure is damaged, the shape of the honeycomb heat storage body can be maintained, and it is possible to prevent fragments of the honeycomb structure from jumping into the combustion chamber or blocking the through holes.
【図１】本発明のハニカム状蓄熱体の排ガス流通部の一
例の構成を示す図である。FIG. 1 is a diagram showing a configuration of an example of an exhaust gas circulation portion of a honeycomb heat storage body of the present invention.
【図２】図１に示すハニカム状蓄熱体の排ガス流通部の
外周に設ける外囲いの一例の構成を示す図である。[Fig. 2] Fig. 2 is a diagram showing a configuration of an example of an outer enclosure provided on the outer periphery of an exhaust gas circulation portion of the honeycomb heat storage body shown in Fig. 1.
【図３】図１に示すハニカム状蓄熱体の排ガス流通部の
外周に設ける外囲いの他の例の構成を示す図である。[Fig. 3] Fig. 3 is a diagram showing the configuration of another example of the outer enclosure provided on the outer periphery of the exhaust gas circulation portion of the honeycomb heat storage body shown in Fig. 1.
【図４】図１に示すハニカム状蓄熱体の排ガス流通部の
外周に設ける外囲いのさらに他の例の構成を示す図であ
る。[Fig. 4] Fig. 4 is a view showing the configuration of still another example of the outer enclosure provided on the outer periphery of the exhaust gas circulation portion of the honeycomb heat storage body shown in Fig. 1.
【図５】図１に示すハニカム状蓄熱体の排ガス流通部の
外周に設ける外囲いのさらに他の例の構成を示す図であ
る。[Fig. 5] Fig. 5 is a view showing the configuration of still another example of the outer enclosure provided on the outer periphery of the exhaust gas circulation portion of the honeycomb heat storage body shown in Fig. 1.
【図６】本発明のハニカム状蓄熱体の排ガス流通部の好
適例を示す図である。[Fig. 6] Fig. 6 is a diagram showing a preferred example of an exhaust gas flow section of the honeycomb heat storage body of the present invention.
【図７】本発明のハニカム状蓄熱体の排ガス流通部の他
の好適例を示す図である。[Fig. 7] Fig. 7 is a diagram showing another preferred example of the exhaust gas circulation portion of the honeycomb heat storage body of the present invention.
【図８】本発明のハニカム状蓄熱体を使用した熱交換体
を燃焼加熱炉の燃焼室に設置した例を示す図である。[Fig. 8] Fig. 8 is a view showing an example in which a heat exchanger using the honeycomb heat storage body of the present invention is installed in a combustion chamber of a combustion heating furnace.
１ ハニカム状蓄熱体、１ａ 排ガス流通部、２ ハニ
カム構造体、３ 貫通孔、５ 外囲いDESCRIPTION OF SYMBOLS 1 Honeycomb heat storage body, 1a Exhaust gas flow section, 2 Honeycomb structure, 3 Through holes, 5 Enclosure
Claims (6)
り、貫通孔に排ガスと被加熱ガスとを交互に通過させて
排ガス中の廃熱を回収するハニカム状蓄熱体において、
ハニカム構造体を固定するセラミックス製外囲いを設け
ることを特徴とするハニカム状蓄熱体。1. A honeycomb heat storage body comprising a combination of a plurality of honeycomb structures, wherein exhaust gas and heated gas are alternately passed through the through holes to recover waste heat in the exhaust gas,
A honeycomb heat storage body, characterized in that a ceramic enclosure for fixing the honeycomb structure is provided.
ねて使用する請求項１記載のハニカム状蓄熱体。2. The honeycomb heat storage body according to claim 1, wherein the honeycomb structures are used by being stacked in a through hole direction.
部分のハニカム構造体の形状が中心部分のハニカム構造
体の形状よりも小さいことを特徴とする請求項１または
２記載のハニカム状蓄熱体。3. The honeycomb heat storage body according to claim 1, wherein the shape of the honeycomb structure at least on the outer peripheral portion of the surface in contact with the high-temperature exhaust gas is smaller than the shape of the central portion of the honeycomb structure.
ックスからなるハニカム構造体で構成するとともに、低
温の被加熱ガスに接する側を主結晶相がコージェライト
からなるハニカム構造体で構成した請求項１または２記
載のハニカム状蓄熱体。4. A honeycomb structure made of a corrosion-resistant ceramic on the side in contact with high-temperature exhaust gas, and a honeycomb structure whose main crystal phase is cordierite on the side in contact with a low-temperature heated gas. Item 2. The honeycomb-shaped heat storage body according to Item 1 or 2.
ージェライト、Ｓｉ含浸ＳｉＣの少なくとも１つを主結
晶相とする材料から構成される請求項１〜４のいずれか
１項に記載のハニカム状蓄熱体。5. The honeycomb shape according to any one of claims 1 to 4, wherein the ceramic enclosure is made of a material having at least one of SiC, cordierite and Si-impregnated SiC as a main crystal phase. Heat storage body.
体を並べたもの、一体型の枠を重ねたもの、角柱を積み
重ねたもののいずれかである請求項１〜４のいずれか１
項に記載のハニカム状蓄熱体。6. The ceramic enclosure as claimed in claim 1, wherein the shape of the ceramic enclosure is one in which plate-like bodies are arranged, one in which integral frames are stacked, and one in which prisms are stacked.
Item 2. A honeycomb heat storage body according to item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32209494A JP2738657B2 (en) | 1994-12-26 | 1994-12-26 | Honeycomb regenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32209494A JP2738657B2 (en) | 1994-12-26 | 1994-12-26 | Honeycomb regenerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08178564A true JPH08178564A (en) | 1996-07-12 |
| JP2738657B2 JP2738657B2 (en) | 1998-04-08 |
Family
ID=18139855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32209494A Expired - Fee Related JP2738657B2 (en) | 1994-12-26 | 1994-12-26 | Honeycomb regenerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2738657B2 (en) |
-
1994
- 1994-12-26 JP JP32209494A patent/JP2738657B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2738657B2 (en) | 1998-04-08 |
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