JPH02180772A - Perforated fiber ceramic body and exhaust gas filter with this utilized therefor - Google Patents
Perforated fiber ceramic body and exhaust gas filter with this utilized thereforInfo
- Publication number
- JPH02180772A JPH02180772A JP21403388A JP21403388A JPH02180772A JP H02180772 A JPH02180772 A JP H02180772A JP 21403388 A JP21403388 A JP 21403388A JP 21403388 A JP21403388 A JP 21403388A JP H02180772 A JPH02180772 A JP H02180772A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- filter
- pts
- exhaust gas
- ceramic
- 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.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 59
- 239000000919 ceramic Substances 0.000 title claims abstract description 25
- 229910000323 aluminium silicate Inorganic materials 0.000 claims abstract description 23
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 23
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims description 5
- 239000004927 clay Substances 0.000 abstract description 9
- 239000000725 suspension Substances 0.000 abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011230 binding agent Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- HEHRHMRHPUNLIR-UHFFFAOYSA-N aluminum;hydroxy-[hydroxy(oxo)silyl]oxy-oxosilane;lithium Chemical compound [Li].[Al].O[Si](=O)O[Si](O)=O.O[Si](=O)O[Si](O)=O HEHRHMRHPUNLIR-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000839 emulsion Substances 0.000 abstract description 2
- 229910052670 petalite Inorganic materials 0.000 abstract description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract description 2
- 229920002554 vinyl polymer Polymers 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 3
- 230000003311 flocculating effect Effects 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 238000007865 diluting Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- 230000008646 thermal stress Effects 0.000 description 9
- 230000008929 regeneration Effects 0.000 description 6
- 238000011069 regeneration method Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012784 inorganic fiber Substances 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000010586 diagram Methods 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
- 238000010304 firing Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 240000008881 Oenanthe javanica Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2082—Other inorganic materials, e.g. ceramics the material being filamentary or fibrous
- B01D39/2086—Other inorganic materials, e.g. ceramics the material being filamentary or fibrous sintered or bonded by inorganic agents
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は排ガスを浄化するフィルタ、特にディーゼル排
ガス中に含まれるパーティキュレート（スス）を除去し
、フィルタの再生を繰り返し安全に行い得るディーゼル
排ガスフィルタ用の繊維セラミックス多孔体とそれを用
いた排ガスフィルタに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a filter for purifying exhaust gas, particularly for a diesel exhaust gas filter that removes particulates (soot) contained in diesel exhaust gas and allows safe repeated filter regeneration. This invention relates to a fiber ceramic porous body and an exhaust gas filter using the same.
従来の技術
ディーゼルエンジンの排ガスフィルタとして、無機質繊
維であるアルミノシリケート繊維をセラミック原料粉末
で焼結させた繊維セラミックをハニカム形状のフィルタ
として用いるものが特公昭６２−５６７７１号公報で知
られている。この従来技術では、無機質繊維としてアル
ミノシリケート繊維、セラミック原料粉末として本節粘
土、ペタライト粉末から抄紙法によって得られるシート
をハニカムフィルタ形状に成型して焼成することで無機
質繊維とセラミック原料粉末を焼結し、複合化している
。BACKGROUND OF THE INVENTION As an exhaust gas filter for a diesel engine, a honeycomb-shaped filter using a fiber ceramic obtained by sintering inorganic aluminosilicate fibers with ceramic raw material powder is known from Japanese Patent Publication No. 56771/1983. In this conventional technology, a sheet obtained by a papermaking method from aluminosilicate fiber as the inorganic fiber, Honbushi clay as the ceramic raw material powder, and petalite powder is formed into a honeycomb filter shape and fired, thereby sintering the inorganic fiber and the ceramic raw material powder. , has become complex.
発明が解決しようとする課題
ディーゼルエンジンに含まれるパーティキュレートを一
定量濾過したフィルタは、フィルタ上でパーティキュレ
ートを焼却して再生（リジェネレーション）される。こ
のリジェネレーションには最近、バーナの燃焼ガスを用
いてフィルタ上のパーティキュレートを加熱し、焼却す
る方法が検討されている。この燃焼ガスでフィルタを加
熱した場合、フィルタの横断面内の燃焼ガスが十分に流
れる部分はほぼ均一な温度を示すが、ガスが流れに（い
部分、特に外周部分で急激に低くなる温度勾配が生じる
。その結果、最外周に大きな熱応力が発生してクラック
を生じ、フィルタを破壊する場合があった。Problems to be Solved by the Invention A filter that has filtered a certain amount of particulates contained in a diesel engine is regenerated by incinerating the particulates on the filter. Recently, a method of heating and incinerating particulates on a filter using combustion gas from a burner has been considered for this regeneration. When a filter is heated with this combustion gas, the temperature is almost uniform in the cross section of the filter where the combustion gas flows sufficiently, but the temperature gradient drops sharply in the areas where the gas does not flow, especially in the outer periphery. As a result, large thermal stress occurs on the outermost periphery, causing cracks and sometimes destroying the filter.
即ち、リジェネレーション時にフィルタの外周付近に発
生する温度勾配によって発生する熱応力が、外周壁で最
大となり、外周壁の強度を上まわるためクラックを生じ
ているのである。That is, the thermal stress generated by the temperature gradient generated near the outer periphery of the filter during regeneration reaches its maximum at the outer peripheral wall, and exceeds the strength of the outer peripheral wall, resulting in cracks.
アルミノシリケート繊維は、初期のアモルファス状態を
保っているときには１００ｋｇ／ｍｍ２を超える引っ張
り強度を有しているが、１０００℃以上の加熱によって
ムライト結晶を晶出するにともなって強度は低下する。Aluminosilicate fibers have a tensile strength of more than 100 kg/mm 2 when maintained in their initial amorphous state, but the strength decreases as mullite crystals are crystallized by heating to 1000° C. or higher.
このアルミノシリケート繊維と、セラミック原料粉末を
焼結させて得られる繊維セラミックも同様の挙動を示す
。この強度の低下によって、フィルタはりジェネレーシ
ョン時の熱応力に耐えられずにクラックを発生していた
。A fiber ceramic obtained by sintering this aluminosilicate fiber and ceramic raw material powder also exhibits similar behavior. Due to this decrease in strength, the filter beam could not withstand the thermal stress during generation and cracks occurred.
本発明はこの問題点を、加熱によって強度の変化しない
セラミック繊維を複合させることで、材料の強度向上を
図って解決することを目的とする。The present invention aims to solve this problem by improving the strength of the material by combining ceramic fibers whose strength does not change with heating.
課題を解決するための手段
アルミノシリケート繊維と、アルミナ繊維と、セラミッ
ク原料粉末とを互いに焼結させて繊維セラミック多孔体
とする。Means for Solving the Problems Aluminosilicate fibers, alumina fibers, and ceramic raw material powder are sintered together to form a fiber ceramic porous body.
作用
上記の構成によれば、アルミノシリケート繊維に加えて
、加熱後も強度の変化しないアルミナ繊維を用いてとも
に焼結させ無機質繊維の複合化することにより、多孔性
を保ちつつ強度を向上させることができる。これによっ
て、例えば排ガスフィルタを構成した場合、リジェネレ
ーション時にフィルタ内に発生する温度勾配で生じる熱
応力に十分耐え、クラックの発生を防止することができ
る。Effect According to the above structure, in addition to aluminosilicate fibers, alumina fibers whose strength does not change even after heating are used and are sintered together to form a composite of inorganic fibers, thereby improving strength while maintaining porosity. Can be done. As a result, when an exhaust gas filter is configured, for example, it is possible to sufficiently withstand thermal stress caused by a temperature gradient generated within the filter during regeneration, and to prevent the occurrence of cracks.
実施例 以下に本発明の実施例を図面を参照して説明する。Example Embodiments of the present invention will be described below with reference to the drawings.
実施例１
平均繊維径が約３μｍで、０．１〜１０ｍ５の長さにチ
ョップしたアルミノシリケート繊維と、同様に、繊維径
約３μｍで長さ０．１〜１０聰のアルミナ繊維を用いた
。このアルミノシリケート繊維１２重量部、アルミナ繊
維３重量部を水１０００重量部に、十分に分散させて懸
濁させた。Example 1 Aluminosilicate fibers having an average fiber diameter of about 3 μm and chopped into a length of 0.1 to 10 m5 and alumina fibers having a fiber diameter of about 3 μm and a length of 0.1 to 10 m were similarly used. 12 parts by weight of this aluminosilicate fiber and 3 parts by weight of alumina fiber were sufficiently dispersed and suspended in 1000 parts by weight of water.
一方、セラミック原料粉末としてセリサイト粘土１０重
量部を水５０重量部に懸濁させた。この繊維懸濁液とベ
タライト粘土懸濁液を撹拌しつつ混合した。次に有機質
結合剤として酢酸ビニル−アクリル共重合エマルジョン
溶液を１重量部加えて十分に撹拌混合させたのち、塩化
アルミニウム溶液を添加して水酸化ナトリウム溶液で中
和して水酸化アルミニウムコロイドを生成させた。この
コロイドでアルミノシリケート繊維、アルミナ繊維、粘
土、有機質結合剤を互いに凝集させた。次に、高分子凝
集剤を添加して凝集を完結させた。On the other hand, 10 parts by weight of sericite clay as a ceramic raw material powder was suspended in 50 parts by weight of water. This fiber suspension and Betalite clay suspension were mixed with stirring. Next, 1 part by weight of vinyl acetate-acrylic copolymer emulsion solution was added as an organic binder and stirred and mixed thoroughly. After that, aluminum chloride solution was added and neutralized with sodium hydroxide solution to produce aluminum hydroxide colloid. I let it happen. This colloid coagulated the aluminosilicate fibers, alumina fibers, clay, and organic binder with each other. Next, a polymer flocculant was added to complete the flocculation.
こうして得られた凝集懸濁液を水で３０００重量部に希
釈したのち、通常の抄紙機で抄造してシートを作成した
。The agglomerated suspension thus obtained was diluted with water to 3000 parts by weight, and then made into a sheet using an ordinary paper machine.
このシートを所定の形状に成形して、電気炉中１２５０
℃で焼成してフィルタ材料が得られる。This sheet was molded into a predetermined shape and placed in an electric furnace for 1250 min.
A filter material is obtained by firing at ℃.
また、別に準備した鋳込み成形型に、上記の凝集懸濁液
を注入して得られる成形品を同様に１２５０℃で焼成す
る方法でも、任意のフィルタ材料が得られる。Alternatively, any filter material can be obtained by similarly firing the molded product obtained by injecting the above-mentioned agglomerated suspension into a separately prepared casting mold at 1250°C.
このフィルタ材料の引っ張り強度は、アルミノシリケー
ト繊維のみを用いた場合の５倍を有していた。また、気
孔率、空気の通過抵抗ともに従来のものとほぼ同じであ
った。The tensile strength of this filter material was five times that of aluminosilicate fibers alone. Furthermore, both the porosity and the air passage resistance were almost the same as those of the conventional one.
実施例２
実施例１で得られたシートを部分し、一方を歯車形状の
二本のロールをもつコルゲートマシンを用い、コルゲー
ト状に成形するとともに、粉砕したアルミノシリケート
繊維と、アルミナ繊維と、セリサイト粘土をポリビニル
アルコールでペースト状にしたプラグ原料をコルゲート
の一端に注入しつつ、粉砕したアルミノシリケート繊維
と、アルミナ繊維と、セリサイト粘土を澱粉糊とポリビ
ニルアルコールで混練して得られる接着剤をコルゲート
頂部に塗布して他方の平板状シートを貼付ける。ここで
得られた段ポール形状の成形体のコルゲート頂部に上記
接着剤を塗布するとともに、上記プラグ原料をもう一方
の端部に注入して円筒状に巻き上げてハニカム形状の成
形体を得た。この成形体はハニカムセルの一端がプラグ
原料で封止され他端で開放し、隣接するセルでは他端が
同じくプラグ原料で封止された構造を持つ。これを電気
炉中１２５０℃に昇温して２時間加熱焼成すると有機物
は焼失し、アルミノシリケート繊維、アルミナ繊維、セ
リサイト粘土は互いに焼結してセラミック°化した繊維
セラミックハニカム構造のフィルタが得られた。Example 2 The sheet obtained in Example 1 was cut into parts, one of which was formed into a corrugate shape using a corrugate machine with two gear-shaped rolls, and crushed aluminosilicate fibers, alumina fibers, and seri While injecting a plug material made of site clay into a paste form with polyvinyl alcohol into one end of the corrugate, an adhesive obtained by kneading crushed aluminosilicate fibers, alumina fibers, and sericite clay with starch paste and polyvinyl alcohol is added. Apply it to the top of the corrugated gate and attach the other flat sheet. The above adhesive was applied to the top of the corrugate of the thus obtained corrugated pole-shaped molded body, and the plug raw material was injected into the other end and rolled up into a cylindrical shape to obtain a honeycomb-shaped molded body. This formed body has a structure in which one end of the honeycomb cell is sealed with a plug material and the other end is open, and the other end of an adjacent cell is also sealed with a plug material. When this is heated to 1250°C in an electric furnace and fired for 2 hours, the organic matter is burnt out, and the aluminosilicate fiber, alumina fiber, and sericite clay are sintered together to form a ceramic filter with a fiber-ceramic honeycomb structure. It was done.
本実施例で得られたフィルタ１を第１図に示す。２は出
口側がプラグ３で封止されたセルで、４は入口側がプラ
グ３で封止され出口側に開口したセルである。A filter 1 obtained in this example is shown in FIG. 2 is a cell whose outlet side is sealed with a plug 3, and 4 is a cell whose inlet side is sealed with a plug 3 and opened to the outlet side.
得られたフィルタ１をディーゼルエンジンの排気系に第
２図に示すような構成で配設した。エンジン倒の排気管
５に三方バルブ６を設け、バルブ６の出口を一方はフィ
ルタ１に、他方はフィルタ１を迂回してフィルタ１後方
の排気管７に接続されたバイパス８に連通させている。The obtained filter 1 was installed in the exhaust system of a diesel engine in the configuration shown in FIG. A three-way valve 6 is provided in the exhaust pipe 5 on the side of the engine, and one outlet of the valve 6 communicates with the filter 1 and the other outlet communicates with a bypass 8 that bypasses the filter 1 and is connected to the exhaust pipe 7 behind the filter 1. .
また、フィルタ１は外周を断熱性に優れたクツション材
９で覆ってケース１０に収納されている。ケース１０の
フィルタ１前方には燃焼室１１を有するバーナ１２が取
り付けられている。まず、排気管５がフィルタ１に連通
するようにバルブ６をセットしディーゼルエンジンを運
転してフィルタ１にパーティキュレートを一定量堆積さ
せた。次にバルブ６を切り替えて排ガスをバイパス８に
流し、バーナ１２に点火して得られる高温度のガスを過
剰の空気とともにフィルタ１に送ってフィルタ１を加熱
してパーティキュレートを酸化焼却した。この時のフィ
ルタ１内部の温度分布を測定した結果を第３図に示す。Further, the filter 1 is housed in a case 10 with its outer periphery covered with a cushion material 9 having excellent heat insulation properties. A burner 12 having a combustion chamber 11 is attached to the front of the filter 1 of the case 10. First, the valve 6 was set so that the exhaust pipe 5 communicated with the filter 1, and the diesel engine was operated to deposit a certain amount of particulates on the filter 1. Next, the valve 6 was switched to allow the exhaust gas to flow through the bypass 8, and the burner 12 was ignited to send the resulting high-temperature gas together with excess air to the filter 1 to heat the filter 1 and oxidize and incinerate the particulates. The results of measuring the temperature distribution inside the filter 1 at this time are shown in FIG.
この図で明らかなように、フィルタ外周で温度が急激に
低下し、温度勾配が著しく大きいことが判かる。この著
しい温度勾配のためにフィルタ内部には熱応力が発生し
、フィルタ外周で最大となって外周部にクラックを発生
する場合があった。As is clear from this figure, the temperature rapidly decreases around the outer periphery of the filter, and it can be seen that the temperature gradient is extremely large. This significant temperature gradient generates thermal stress inside the filter, which reaches its maximum at the outer periphery of the filter and may cause cracks at the outer periphery.
しかるに、本発明のアルミナ繊維を複合したフィルタを
用いた場合、リジェネレーションの繰り返し、また、第
３図に示したより大きな温度勾配を実験として加えても
クラックはまったく観察されなかった。これは、アルミ
ナ繊維を複合したことによって本フィルタ材料の引っ張
り強度が、外周にかかる熱応力に十分に耐え得るものと
なったためである。即ち、アルミノシリケート繊維がア
モルファス状態で高強度を有し、加熱によって結晶化す
るに従って強度の著しい低下を招いていたのに対して、
アルミナ繊維は当初から結晶した状態で高強度を有して
おり、焼結させるための加熱に対しても強度の低下を生
じることはないのである。However, when the alumina fiber composite filter of the present invention was used, no cracks were observed even after repeated regeneration and when a larger temperature gradient as shown in FIG. 3 was applied as an experiment. This is because the tensile strength of the present filter material is sufficient to withstand thermal stress applied to the outer periphery due to the composite of alumina fibers. In other words, aluminosilicate fibers have high strength in an amorphous state, but as they crystallize by heating, their strength significantly decreases.
Alumina fibers have high strength from the beginning in their crystallized state, and their strength does not decrease even when heated for sintering.
一方、従来のアルミノシリケート繊維のみからなるフィ
ルタにもクラックを発生しないものがあることから、ア
ルミノシリケート繊維からなる材料の強度と発生する熱
応力がほぼ等しい状態にあることがわかる。従って、ア
ルミナ繊維を複合した本発明の材料を用いて構成したフ
ィルタは、引っ張り強度が５倍になっていることがら、
クラックを生じさせる熱応力に対して５倍の安全率を有
していることがわかる。On the other hand, since some conventional filters made only of aluminosilicate fibers do not generate cracks, it can be seen that the strength of the material made of aluminosilicate fibers and the generated thermal stress are approximately equal. Therefore, a filter constructed using the material of the present invention, which is a composite of alumina fibers, has five times the tensile strength.
It can be seen that it has a safety factor of 5 times against thermal stress that causes cracks.
アルミナ繊維はアルミノシリケート繊維、セラミック原
料粉末と反応して一部ムライトに変化して焼結すること
でアルミノシリケート繊維の接合を補強しているのであ
る。Alumina fibers react with aluminosilicate fibers and ceramic raw material powder, partially converting into mullite and sintering, thereby reinforcing the bond of aluminosilicate fibers.
発明の効果
本発明によれば、アルミノシリケート繊維と、アルミナ
繊維と、セラミック原料粉末とを焼結結合させて複合化
することにより、高強度とすることができ、フィルタと
して用いたときに発生する温度勾配による熱応力に抗す
ることかでき、その結果、クラックによるフィルタの破
壊を未然に防ぐ効果を有する。Effects of the Invention According to the present invention, by sintering and combining aluminosilicate fibers, alumina fibers, and ceramic raw material powder, it is possible to obtain high strength, which reduces the problem that occurs when used as a filter. It can withstand thermal stress caused by temperature gradients, and as a result, it has the effect of preventing damage to the filter due to cracks.
第１図は本発明の°フィルタ材料を用いて構成した排ガ
スフィルタの一実施例を示す斜視図、第２図は第１図の
排ガスフィルタをディーゼルエンジンの排ガス系に設置
した装置の概略構成図、第３図は第２図に示した装置で
リジェネレーションを行ったときのフィルタ内部の温度
分布を示した図である。
１・・・フィルタ、２．４・・・セル。
代理人の氏名 弁理士 粟野重孝 ほか１名第
２図
１２バーナ
ｈＩｐＪ３図
１事件の表示
昭和６３年特許願第２１４０３３号
発明の名称
繊維セラばツク多孔体及びそれを用いた排ガスフィルタ
補正をする者
事件との関係 特 許 出 願
大佐 所 大阪府門真市大字門真１００６番地名 称
（５８２）松下電器産業株式会社代表者 谷
井 昭 雄Fig. 1 is a perspective view showing an embodiment of an exhaust gas filter constructed using the filter material of the present invention, and Fig. 2 is a schematic configuration diagram of a device in which the exhaust gas filter of Fig. 1 is installed in the exhaust gas system of a diesel engine. , FIG. 3 is a diagram showing the temperature distribution inside the filter when regeneration is performed with the apparatus shown in FIG. 2. 1...filter, 2.4...cell. Name of agent: Patent attorney Shigetaka Awano and one other person Fig. 2 12 Burner hIpJ 3 Fig. 1 Display of the case Patent application No. 214033 of 1988 Name of the invention Fiber ceramic porous body and person who corrects exhaust gas filter using the same Relationship to incident Patent application
Colonel Tokoro 1006 Oaza Kadoma, Kadoma City, Osaka Name (582) Matsushita Electric Industrial Co., Ltd. Representative Tani
Akio I
Claims (3)
ラミック原料粉末とを互いに焼結させて構成したことを
特徴とする繊維セラミック多孔体。(1) A fiber ceramic porous body characterized by being constructed by sintering aluminosilicate fibers, alumina fibers, and ceramic raw material powder.
ラミック原料粉末とを互いに焼結させて構成してなる繊
維セラミック多孔体からなり、ハニカム形状であって、
セル端部を交互に閉塞してなる排ガスフィルタ。(2) A fiber ceramic porous body formed by mutually sintering aluminosilicate fibers, alumina fibers, and ceramic raw material powder, and having a honeycomb shape,
An exhaust gas filter with alternately closed cell ends.
させて複合化した繊維セラミック多孔体で構成した特許
請求の範囲第２項記載の排ガスフィルタ。(3) The exhaust gas filter according to claim 2, wherein at least the outer periphery of the filter is made of a fiber ceramic porous body made of a composite material made by sintering alumina fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21403388A JPH02180772A (en) | 1988-08-29 | 1988-08-29 | Perforated fiber ceramic body and exhaust gas filter with this utilized therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21403388A JPH02180772A (en) | 1988-08-29 | 1988-08-29 | Perforated fiber ceramic body and exhaust gas filter with this utilized therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02180772A true JPH02180772A (en) | 1990-07-13 |
Family
ID=16649164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21403388A Pending JPH02180772A (en) | 1988-08-29 | 1988-08-29 | Perforated fiber ceramic body and exhaust gas filter with this utilized therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02180772A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05306614A (en) * | 1992-04-28 | 1993-11-19 | Matsushita Electric Ind Co Ltd | Exhaust gas filter and manufacture thereof |
| KR100733918B1 (en) * | 2004-12-30 | 2007-07-02 | 주식회사 엘지화학 | Method for preparing of ceramic paper and ceramic paper using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111153A (en) * | 1984-06-26 | 1986-01-18 | Matsushita Electric Ind Co Ltd | Structural body for depositing catalyst |
| JPS61164823A (en) * | 1985-01-18 | 1986-07-25 | 松下電器産業株式会社 | Manufacture of fiber ceramic honeycomb structure |
| JPS62132524A (en) * | 1985-12-03 | 1987-06-15 | Matsushita Electric Ind Co Ltd | Exhaust gas filter |
-
1988
- 1988-08-29 JP JP21403388A patent/JPH02180772A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111153A (en) * | 1984-06-26 | 1986-01-18 | Matsushita Electric Ind Co Ltd | Structural body for depositing catalyst |
| JPS61164823A (en) * | 1985-01-18 | 1986-07-25 | 松下電器産業株式会社 | Manufacture of fiber ceramic honeycomb structure |
| JPS62132524A (en) * | 1985-12-03 | 1987-06-15 | Matsushita Electric Ind Co Ltd | Exhaust gas filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05306614A (en) * | 1992-04-28 | 1993-11-19 | Matsushita Electric Ind Co Ltd | Exhaust gas filter and manufacture thereof |
| KR100733918B1 (en) * | 2004-12-30 | 2007-07-02 | 주식회사 엘지화학 | Method for preparing of ceramic paper and ceramic paper using the same |
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