JPH10263339A - Ceramic filter - Google Patents
Ceramic filterInfo
- Publication number
- JPH10263339A JPH10263339A JP6849397A JP6849397A JPH10263339A JP H10263339 A JPH10263339 A JP H10263339A JP 6849397 A JP6849397 A JP 6849397A JP 6849397 A JP6849397 A JP 6849397A JP H10263339 A JPH10263339 A JP H10263339A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- resistant inorganic
- ceramic filter
- inorganic fiber
- tubular molded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガス中、特に高温
のガス中に含まれる粉塵を、高温の状態のまま濾過する
ためのセラミックフィルターに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic filter for filtering dust contained in a gas, particularly a high-temperature gas, in a high-temperature state.
【０００２】[0002]
【従来の技術】濾過効率の観点から、高温のガスを冷却
しないで濾過できるフィルターの開発が試みられてい
る。このフィルターは耐熱無機繊維の成形体により構成
されるもので、例えば特開平３−６５２０８号公報で
は、アルミナおよび／またはジルコンを含有した繊維と
コロイドシリカ及び少なくとも一種の有機結合材、少な
くとも一種の有機開膠質剤を含むスリップを成形した濾
過カートリッジが開示されている。また、特開平４−１
１４７０９号公報には、耐火セラミックファイバーを水
性のスラリのセラミックバインダーとともに真空成形
し、これを熱処理して得られた骨格部材をアルミナゲル
で被覆し、高温で焼成するフィルタ要素の製造方法が記
載されている。さらに、実開昭６２−１２３２１９号公
報には、シリカとアルミナ混合物を繊維化する際に発生
する粒径４４μｍ以上の粒状物を４０重量％以上含み、
残部がシリカ・アルミナ質の繊維状物と無機質と有機質
の一種の補強材からなる耐熱フィルターが記載されてい
る。2. Description of the Related Art From the viewpoint of filtration efficiency, attempts have been made to develop a filter capable of filtering hot gas without cooling. This filter is made of a molded article of heat-resistant inorganic fiber. For example, in Japanese Patent Application Laid-Open No. 3-65208, a fiber containing alumina and / or zircon, colloidal silica and at least one kind of organic binder, at least one kind of organic binder are disclosed. Disclosed is a filtration cartridge formed from a slip containing a colloidal agent. Also, Japanese Patent Application Laid-Open No. 4-1
No. 14,709 discloses a method for producing a filter element in which a refractory ceramic fiber is vacuum-formed together with an aqueous slurry ceramic binder, and a skeleton member obtained by heat-treating the resultant is coated with alumina gel and fired at a high temperature. ing. Further, Japanese Utility Model Application Laid-Open No. 63-123219 discloses that 40% by weight or more of particulate matter having a particle size of 44 μm or more generated when fiberizing a mixture of silica and alumina is contained.
A heat-resistant filter is described in which the remainder consists of a silica-alumina fibrous material and one of inorganic and organic reinforcing materials.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記に
挙げたフィルターは、捕集した粉塵により目詰りを生じ
やすく、早期に圧力損失が高くなり、通気路の確保が難
しいものとなる。このため、フィルター１単位当たりの
捕集量が少ない他、目詰り毎の再生操作（例えば、振動
による振い落としや洗浄等）や、交換作業を頻繁に行わ
なければならない欠点があった。However, in the above-mentioned filters, clogging is apt to occur due to collected dust, pressure loss is increased early, and it is difficult to secure a ventilation path. For this reason, in addition to the small amount of collection per unit of filter, there are drawbacks that a regeneration operation for each clogging (for example, shaking off or washing by vibration) and a replacement operation must be performed frequently.
【０００４】本発明は、以上の問題点に鑑みなされたも
のであって、その目的は、１０００℃程度までの高温ガ
ス中における粉塵や固体物の濾過に好適であって、かつ
捕集量が多く、圧力損失が小さく、捕集効率の高いセラ
ミックフィルターを提供するものである。The present invention has been made in view of the above problems, and has as its object to be suitable for filtering dust and solid matter in a high-temperature gas up to about 1000 ° C. In many cases, the present invention provides a ceramic filter having a small pressure loss and high collection efficiency.
【０００５】[0005]
【課題を解決するための手段】上記の目的は、本発明
の、耐熱無機繊維を無機バインダーで結合し、一端を封
止した形状に成形してなる嵩密度０．１５〜１．０ｇ／
ｃｍ3 の管状成形体中に、耐熱無機繊維ペーパーを装入
したことを特徴とするセラミックフィルターにより達成
される。上記セラミックフィルターにおいて、（１）管
状成形体および／または耐熱無機繊維ペーパーの耐熱無
機繊維が、（Ａ）４０〜５５重量％のＳｉＯ2 と４５〜
６０重量％のＡｌ2 Ｏ3 からなる、もしくは（Ｂ）前記
（Ａ）に２０重量％以下のＺｒＯ2 を含有してなる（但
し、合計で１００重量％を越えない）非晶質のセラミッ
クファイバーであること、（２）耐熱無機繊維ペーパー
が、所定ピッチで山折りと谷折りとを繰返して展開する
側面を有する円筒状物であり、かつ前記側面の山折り線
が管状成形体の内周壁に接触するように該管状成形体中
に装入されること、（３）耐熱無機繊維ペーパーが耐熱
無機繊維を有機バインダーまたは無機バインダーで結合
して形成されていることが好ましい。SUMMARY OF THE INVENTION It is an object of the present invention to provide a bulk density of 0.15 to 1.0 g / g, which is obtained by bonding heat-resistant inorganic fibers with an inorganic binder and forming one end thereof into a sealed shape.
This is achieved by a ceramic filter characterized in that a heat-resistant inorganic fiber paper is charged in a tubular molded product of cm 3 . In the ceramic filter, (1) the heat-resistant inorganic fibers of the tubular molded body and / or the heat-resistant inorganic fiber paper are (A) 40 to 55% by weight of SiO 2 and 45 to 45% by weight.
Amorphous ceramic fiber comprising 60% by weight of Al 2 O 3 or (B) containing not more than 20% by weight of ZrO 2 in (A) (but not exceeding 100% by weight in total) (2) The heat-resistant inorganic fiber paper is a cylindrical material having a side surface on which the mountain fold and the valley fold are repeatedly developed at a predetermined pitch and developed, and the mountain fold line on the side surface is an inner peripheral wall of the tubular molded body. (3) It is preferable that the heat-resistant inorganic fiber paper is formed by bonding heat-resistant inorganic fibers with an organic binder or an inorganic binder.
【０００６】本発明のセラミックフィルターにおいて
は、高温ガスは耐熱無機繊維ペーパーと接触またはこれ
を通過しつつ、管状成形体を通過するため、粉塵の捕集
効率が高く、またフィルター全体としての圧力損失の増
加が抑えられる。更に、耐熱無機繊維をＳｉＯ2 、Ａｌ
2 Ｏ3 及びＺｒＯ2 からなる非晶質のセラミックファイ
バーとすることにより、粉塵の捕集効率をより高めるこ
とができる。これは、Ａｌ2 Ｏ3 はその表面電荷がプラ
スに帯電しやすく、一方ＳｉＯ2及びＺｒＯ2 はマイナ
スに荷電し易いという特性を有するため、粉塵の荷電状
態に係わらず粉塵を静電的に吸着でき、それにより捕集
効率が高められるものと考えられる。また、耐熱無機繊
維ペーパーが折畳板状の側面を有する円筒状物とし、か
つその山折り線が管状成形体の内周壁に接触するように
該管状成形体中に装入されることにより、耐熱無機繊維
ペーパーの濾過面積が大きくなり捕集効率が高まるとと
もに、耐熱無機繊維ペーパーの管状成形体内での不要な
動きが抑えられ、耐熱無機繊維ペーパーの保護ととも
に、圧力損失の増加を抑える。また、耐熱無機繊維ペー
パーは、耐熱無機繊維を有機バインダーまたは無機バイ
ンダーで結合して形成されるが、有機バインダーは高温
で消失するため、高温時に形状保持するために無機バイ
ンダーを添加することが好ましいが、高温ガスの風速が
小さい場合、あるいは有機バインダーが耐えられる温度
範囲のガスであれば、有機バインダーのみでも可能であ
り、ガス温度に応じた選択ができる。In the ceramic filter of the present invention, the high-temperature gas passes through the tubular molded body while being in contact with or passing through the heat-resistant inorganic fiber paper, so that the dust collection efficiency is high and the pressure loss of the filter as a whole is high. Increase is suppressed. Further, heat-resistant inorganic fibers are made of SiO 2 , Al
By using an amorphous ceramic fiber made of 2 O 3 and ZrO 2 , dust collection efficiency can be further improved. This is because Al 2 O 3 has the property that its surface charge is easily positively charged, whereas SiO 2 and ZrO 2 are easily charged negatively, so that dust is electrostatically adsorbed regardless of the charged state of the dust. It is thought that the collection efficiency can be improved thereby. Further, by forming the heat-resistant inorganic fiber paper into a cylindrical body having a folded plate-like side surface, and being inserted into the tubular molded body so that the mountain fold line contacts the inner peripheral wall of the tubular molded body, The filtration area of the heat-resistant inorganic fiber paper is increased to increase the collection efficiency, and unnecessary movement of the heat-resistant inorganic fiber paper in the tubular molded body is suppressed, and protection of the heat-resistant inorganic fiber paper and increase in pressure loss are suppressed. Further, the heat-resistant inorganic fiber paper is formed by bonding the heat-resistant inorganic fiber with an organic binder or an inorganic binder.However, since the organic binder disappears at a high temperature, it is preferable to add an inorganic binder to maintain the shape at a high temperature. However, if the wind speed of the high-temperature gas is low, or if the gas is within a temperature range that the organic binder can withstand, the organic binder alone can be used, and selection can be made according to the gas temperature.
【０００７】[0007]
【発明の実施の形態】以下、本発明の好ましい実施の形
態を、添付図面を参照して詳細に説明する。図１に示す
ように、本発明のセラミックフィルター１は、一端が封
止され、他端開口部周縁に図示しない濾過装置筺体に対
する取付用のフランジ２ａを形成した耐熱無機質繊維か
らなる管状成形体２と、この管状成形体２の内部に装入
される耐熱無機繊維ペーパー３とから構成される。Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIG. 1, a ceramic filter 1 of the present invention has a tubular molded body 2 made of a heat-resistant inorganic fiber having one end sealed and a flange 2a for attachment to a filter device housing (not shown) formed around the opening at the other end. And a heat-resistant inorganic fiber paper 3 inserted into the tubular molded body 2.
【０００８】管状成形体２を構成する耐熱無機繊維と、
耐熱無機繊維ペーパー３を構成する耐熱無機繊維とは、
それぞれ異なっていてもよいし、同一であってもよい。
両者に共通して特に好ましい耐熱無機繊維は、（Ａ）４
０〜５５重量％のＳｉＯ2 と４５〜６０重量％のＡｌ2
Ｏ3 からなる、もしくは（Ｂ）前記（Ａ）に２０重量％
以下のＺｒＯ2 を含有してなる（但し、合計で１００重
量％を越えない）非晶質のセラミックファイバーであ
る。Ａｌ2 Ｏ3 はその表面電荷がプラスに帯電しやす
く、一方ＳｉＯ2 及びＺｒＯ 2 はマイナスに荷電し易い
という特性を有するため、粉塵の荷電状態に係わらず粉
塵を捕集できる。A heat-resistant inorganic fiber constituting the tubular molded body 2;
The heat-resistant inorganic fibers constituting the heat-resistant inorganic fiber paper 3 are as follows.
Each may be different or the same.
Particularly preferred heat-resistant inorganic fibers common to both are (A) 4
0-55% by weight SiOTwoAnd 45-60% by weight of AlTwo
OThreeOr (B) 20% by weight of (A)
The following ZrOTwo(However, a total of 100
%) (Amorphous ceramic fiber)
You. AlTwoOThreeHas a positive surface charge
On the other hand, SiOTwoAnd ZrO TwoIs easily negatively charged
Irrespective of the charge state of the dust
Dust can be collected.
【０００９】管状成形体２の成形密度は、嵩密度０．１
５〜１．０ｇ／ｃｍ3 が好適である。嵩密度が０．１５
ｇ／ｃｍ3 未満では、強度が低く、濾過の際のガス圧に
耐えるのが困難となる。その逆に嵩密度が１．０ｇ／ｃ
ｍ3 を超えると、繊維間の隙間（目開き）が小さ過ぎて
圧力損失が大きくなるとともに、剛性が高くなる結果、
熱膨張や前記濾過装置筺体との歪みに敏感になり、割れ
などが発生しやすくなる。特に好ましい嵩密度は、０．
２〜０．５ｇ／ｃｍ3 の範囲である。この管状成形体２
は、上記耐熱無機繊維を適当な無機バインダーと混合
し、得られたスラリーを真空吸引成形した後、乾燥する
ことにより得られる。[0009] The molding density of the tubular molded body 2 is 0.1
5 to 1.0 g / cm 3 is preferred. Bulk density is 0.15
If it is less than g / cm 3 , the strength will be low and it will be difficult to withstand the gas pressure during filtration. Conversely, the bulk density is 1.0 g / c
Beyond m 3, the gaps between the fibers (mesh) is too small with pressure loss increases, the stiffness increases result,
It becomes sensitive to thermal expansion and distortion with the filter device housing, and cracks and the like are likely to occur. A particularly preferred bulk density is 0.1.
It is in the range of 2 to 0.5 g / cm 3 . This tubular molded body 2
Can be obtained by mixing the above heat-resistant inorganic fiber with an appropriate inorganic binder, subjecting the resulting slurry to vacuum suction molding, and then drying.
【００１０】耐熱無機繊維ペーパー３は、上記の耐熱無
機繊維に有機バインダーまたは無機バインダー、開膠
剤、凝集剤等を加えた水溶性スラリーを抄造し、乾燥し
て紙状にする公知の抄造方法によって製造される。な
お、使用するバインダーは、有機バインダーは高温で消
失するため、高温時における形状保持性を確保するため
に無機バインダーの方が好ましいが、高温ガスの風速が
小さい場合、あるいは温度が低い場合等では必ずしも無
機バインダーを使用しなくとも良く、使用温度域などに
よって適宜選択できる。有機バインダーを使用すること
により、例えばペーパーの強度が増し、加工が容易とな
る等の効果が得られる。そして抄造後、耐熱無機繊維ペ
ーパー３は、図１に示すように、所定ピッチで山折り、
谷折りを繰返してなる折畳板状物とされ、円筒状に丸め
られる。その時の円筒径は、図３に示すように、外周部
の各山折り線が管状成形体２の内周壁に接触する程度の
径に設定される。これにより、濾過面積の拡大ととも
に、耐熱無機繊維ペーパー３の管状成形体２内での不要
な動きが抑えられ、耐熱無機繊維ペーパー３を保護す
る。また、この円筒状に加工された耐熱無機繊維ペーパ
ー３は底部が開放されているため、セラミックフィルタ
ー全体としての圧力損失の上昇を招くことは殆ど無い。The heat-resistant inorganic fiber paper 3 is prepared by forming a water-soluble slurry obtained by adding an organic binder or an inorganic binder, a coagulant, a flocculant, etc. to the heat-resistant inorganic fiber described above, and drying the slurry to form a paper. Manufactured. In addition, the binder to be used, since the organic binder disappears at a high temperature, an inorganic binder is preferable in order to ensure shape retention at a high temperature, but when the wind speed of the high-temperature gas is small, or when the temperature is low, etc. It is not always necessary to use an inorganic binder, and it can be appropriately selected depending on a use temperature range and the like. By using an organic binder, for example, effects such as an increase in paper strength and an easy processing can be obtained. Then, after papermaking, the heat-resistant inorganic fiber paper 3 is mountain-folded at a predetermined pitch as shown in FIG.
It is made into a folded plate-like material obtained by repeating valley folding, and is rounded into a cylindrical shape. The diameter of the cylinder at that time is set to such a degree that each mountain fold line on the outer peripheral portion contacts the inner peripheral wall of the tubular molded body 2 as shown in FIG. Accordingly, the unnecessary area of the heat-resistant inorganic fiber paper 3 in the tubular molded body 2 is suppressed, and the heat-resistant inorganic fiber paper 3 is protected. Further, since the bottom of the heat-resistant inorganic fiber paper 3 processed into a cylindrical shape is open, the pressure loss of the entire ceramic filter hardly increases.
【００１１】本発明のセラミックフィルター１は、図２
に示すように、上記管状成形体２内に耐熱無機繊維ペー
パー３を装入して構成される。そして、図２の矢印に示
す如く高温ガスを管状成形体２の開口部より流入させる
と、流入ガスの一部は耐熱無機繊維ペーパー３の内周面
（管状成形体２の軸線側）と接触して、その一部はその
まま管状成形体２の封止側端部へと流下し、残部は耐熱
無機繊維ペーパー３を通過して管状成形体２へと至る。
また、流入ガスの残分は管状成形体２と耐熱無機繊維ペ
ーパー３との空間に送られて耐熱無機繊維ペーパー３の
外周面（管状成形体２の内周壁側）と接触して、その一
部は管状成形体２の封止側端部へと流下し、管状成形体
２を通過する。その間に高温ガス中に含まれる粉塵は、
耐熱無機繊維ペーパー３あるいは管状成形体２を通過す
ることによる通常の濾過作用に加えて、静電的吸着作用
によっても捕集されるため、捕集効率が増加する。The ceramic filter 1 according to the present invention is shown in FIG.
As shown in (1), a heat-resistant inorganic fiber paper 3 is inserted into the tubular molded body 2. When the high-temperature gas flows through the opening of the tubular molded body 2 as shown by the arrow in FIG. 2, a part of the inflowing gas comes into contact with the inner peripheral surface of the heat-resistant inorganic fiber paper 3 (on the axis of the tubular molded body 2). Then, a part thereof flows down to the sealing-side end of the tubular molded body 2 as it is, and the remainder passes through the heat-resistant inorganic fiber paper 3 and reaches the tubular molded body 2.
Further, the residue of the inflow gas is sent to the space between the tubular molded body 2 and the heat-resistant inorganic fiber paper 3 and comes into contact with the outer peripheral surface of the heat-resistant inorganic fiber paper 3 (the inner peripheral wall side of the tubular molded body 2). The part flows down to the sealed end of the tubular molded body 2 and passes through the tubular molded body 2. During that time, the dust contained in the hot gas is
In addition to the usual filtration action by passing through the heat-resistant inorganic fiber paper 3 or the tubular molded body 2, the collection is also performed by the electrostatic adsorption action, so that the collection efficiency increases.
【００１２】以下、本発明のセラミックフィルターに関
して実施例及び比較例を挙げて更に説明する。但し、本
発明は実施例のみに限定されるものではない。 （実施例１）４９重量％のＡｌ2 Ｏ3 及び５１重量％の
ＳｉＯ2 からなる非晶質のセラミックファイバー（ニチ
アス（株）製「ファインレックス１３００」）１００重
量部を、コロイダルシリカ（日産化学（株）製「スノー
テックス４０」）５０重量部と少量のポリアクリルアミ
ド系凝集剤とともに水中に分散し、真空吸引後乾燥して
内径２５ｍｍ、肉厚５ｍｍ、長さ９００ｍｍで、その一
端が閉じた略図１に示す形状の管状成形体を作製した。
この管状成形体の嵩密度は、０．２４ｇ／ｃｍ 3 であっ
た。また、上記「ファインレックス１３００」１００重
量部、上記「スノーテックス４０」１０重量部、α化澱
粉１５重量部と少量のポリアクリルアミド系凝集剤を水
中に分散し、抄造して厚さ０．３ｍｍの耐熱無機繊維ペ
ーパーを作製した。次いで抄造したペーパーを８００ｍ
ｍ幅に切断し、図１に示す如く１０ｍｍピッチで折り加
工を施し、７山長さで切断し、両端解放の円筒とし、こ
れを管状成形体に装入してセラミックフィルターを完成
した。このセラミックフィルターは、２．４ｍ3 ／ｈ・
本の風量の時、２．５ｍｍＡｑの圧力損失を示した。こ
のセラミックフィルターにタルクの微粉を混入した空気
を流通させ、タルク微粉の捕集量を測定したところ、圧
力損失が３２ｍｍＡｑを示した時点で４１ｇを捕集して
いた。また、ジオクチルフタレートを使用した捕集効率
試験では、０．３μｍの粒径で９９．２％の高い捕集効
率を示した。また、６００〜７００℃の温度で使用後も
セラミックフィルターに曲りや割れなどの異常を生じな
かった。Hereinafter, the ceramic filter of the present invention will be described.
Examples and comparative examples will be further described. However, the book
The invention is not limited only to the embodiments. (Example 1) 49% by weight of AlTwoOThreeAnd 51% by weight
SiOTwoAmorphous ceramic fiber (Nichi
As Co., Ltd. "Fine Rex 1300") 100 weight
Amount of colloidal silica (Nissan Chemical Co., Ltd. “Snow
Tex 40 ") 50 parts by weight and a small amount of polyacrylamide
Disperse in water with a coagulant
25mm inner diameter, 5mm wall thickness, 900mm length
A tubular molded body having the shape shown in FIG. 1 having a closed end was produced.
The bulk density of this tubular molded body is 0.24 g / cm ThreeSo
Was. In addition, the above “Fine Rex 1300” 100
Parts, 10 parts by weight of "Snowtex 40", pregelatinized
Powder 15 parts by weight and a small amount of polyacrylamide-based flocculant
Dispersed in paper, made into paper and heat-resistant inorganic fiber paper with a thickness of 0.3 mm
A paper was produced. Next, the paper made 800m
Cut to m width and folded at 10mm pitch as shown in Figure 1
And cut it into 7 mountain lengths to form a cylinder with both ends open.
This is charged into a tubular molded body to complete the ceramic filter
did. This ceramic filter is 2.4mThree/ H ・
At the air volume of the book, a pressure loss of 2.5 mmAq was exhibited. This
Air with fine talc powder mixed in ceramic filter
And the amount of collected talc fines was measured.
When the power loss showed 32 mmAq, 41 g was collected and
Was. In addition, collection efficiency using dioctyl phthalate
In the test, a high collection efficiency of 99.2% at a particle size of 0.3 μm
Rate. Also, after using at a temperature of 600-700 ° C
Do not cause abnormalities such as bending or cracking of the ceramic filter.
won.
【００１３】（比較例１）実施例１と同様に作製した管
状成形体のみを実施例１と同様の測定方法によって試験
した結果、２．４ｍ3 ／ｈ・本の風量の時、２．５ｍｍ
Ａｑの圧力損失を示し、タルク混入試験では圧損３２ｍ
ｍＡｑの時点での捕集量は９ｇであり、その捕集効率は
９８．２％であった。従って、実施例１では比較例１に
比べ捕集効率が高く、耐熱無機繊維ペーパー装入による
捕集効率向上を確認した。また、耐熱無機繊維ペーパー
を挿入することによる圧力損失増加も認められなかっ
た。(Comparative Example 1) Only a tubular molded body produced in the same manner as in Example 1 was tested by the same measuring method as in Example 1, and as a result, when the air flow rate was 2.4 m 3 / h · book, 2.5 mm
The pressure loss of Aq is shown.
The collection amount at the time of mAq was 9 g, and the collection efficiency was 98.2%. Therefore, in Example 1, the collection efficiency was higher than in Comparative Example 1, and it was confirmed that the collection efficiency was improved by charging the heat-resistant inorganic fiber paper. Also, no increase in pressure loss due to the insertion of the heat-resistant inorganic fiber paper was observed.
【００１４】（実施例２）３３重量％のＡｌ2 Ｏ3 、５
１重量％のＳｉＯ2 、１６重量％のＺｒＯ2 の組成から
なる非晶質のセラミックファイバー（ニチアス（株）製
「ファインレックス１４００」）１００重量部と、上記
「スノーテックス４０」６０重量部と少量のポリアクリ
ルアミド系凝集剤を使用して実施例１と同様にして管状
成形体を作製した。この管状成形体の嵩密度は、０．２
１ｇ／ｃｍ3 であった。また、実施例１で抄造されたペ
ーパーにアルミナゾル（日産化学（株）製「ＡＳ−５２
０」）を重量比で８０％含浸させ、乾燥した後１０ｍｍ
ピッチで折り加工を施した７山長さの円筒状物を管状成
形体に挿入してセラミックフィルターを完成した。この
セラミックフィルターに実施例１と同様な試験を実施し
たところ、２．４ｍ3 ／ｈ・本の風量の時、２ｍｍＡｑ
の圧力損失を示し、圧損３３ｍｍＡｑの時点で４５ｇの
捕集量、捕集効率９７．６％を示した。なお、実施例２
で使用した「ファインレックス１４００」は実施例１の
「ファインレックス１３００」よりも繊維が太く、長い
ため、圧力損失がより小さくなり、捕集効率も下がった
ものと見られる。Example 2 33% by weight of Al 2 O 3 , 5
1 wt% of SiO 2, 16 wt% of the amorphous ceramic fiber having the composition of ZrO 2 (Nichias Co., Ltd., "Fine Rex 1400") and 100 parts by weight, the "Snowtex 40" and 60 parts by weight A tubular molded body was produced in the same manner as in Example 1 using a small amount of a polyacrylamide-based flocculant. The bulk density of this tubular molded body is 0.2
It was 1 g / cm 3 . In addition, alumina sol (“AS-52” manufactured by Nissan Chemical Industries, Ltd.) was added to the paper made in Example 1.
0 ") is impregnated with 80% by weight, dried and 10 mm
A cylindrical material having a length of seven peaks, which was folded at a pitch, was inserted into a tubular molded body to complete a ceramic filter. When a test similar to that of Example 1 was performed on this ceramic filter, when the air flow rate was 2.4 m 3 / h · book, 2 mmAq
At a pressure loss of 33 mmAq, a collection amount of 45 g and a collection efficiency of 97.6%. Example 2
"Fine Rex 1400" used in "1" has thicker fibers and a longer fiber than "Fine Rex 1300" of Example 1, so that the pressure loss is smaller and the collection efficiency is considered to be lower.
【００１５】（比較例２）実施例２と同様に作製した管
状成形体のみを実施例１と同様の測定方法によって試験
した結果、２．４ｍ3 ／ｈ・本の風量の時、２ｍｍＡｑ
の圧力損失を示し、タルク混入試験では圧損３３ｍｍＡ
ｑの時点での捕集量は１１ｇであり、その捕集効率は９
７．２％であった。従って、実施例２においても比較例
２に比べて捕集効率が高く、耐熱無機繊維ペーパーによ
る捕集効率向上を確認し、また圧力損失の増加も少ない
ことを確認した。(Comparative Example 2) Only a tubular molded body produced in the same manner as in Example 2 was tested by the same measuring method as in Example 1, and as a result, when the air flow rate was 2.4 m 3 / h · book, 2 mmAq
The pressure loss was 33 mmA in the talc mixing test.
The amount collected at the time point q is 11 g, and the collection efficiency is 9 g.
7.2%. Therefore, also in Example 2, the collection efficiency was higher than that of Comparative Example 2, and it was confirmed that the collection efficiency was improved by the heat-resistant inorganic fiber paper, and that the increase in pressure loss was small.
【００１６】[0016]
【発明の効果】以上の説明により明らかなように、本発
明によるセラミックフィルターにあっては、高温のガス
中に含まれる粉塵の捕集効率が高く、捕集量が多くな
り、しかも圧力損失も小さいものとなる。従って、本発
明のセラミックフィルターでは、従来の高温用フィルタ
ーに比べて再生、交換などのメンテナンス周期が長くな
り、それ故、産業用燃焼炉、焼却炉、自動車の排ガス等
の高温用のフィルターとして好適となる。As is apparent from the above description, in the ceramic filter according to the present invention, the efficiency of collecting dust contained in high-temperature gas is high, the amount of dust collected is large, and the pressure loss is low. It will be small. Therefore, in the ceramic filter of the present invention, the maintenance cycle such as regeneration and replacement becomes longer than that of the conventional high temperature filter, and therefore, it is suitable as a high temperature filter for industrial combustion furnaces, incinerators, exhaust gas from automobiles, and the like. Becomes
【図１】本発明のセラミックフィルターの一部断面分解
斜視図である。FIG. 1 is a partial cross-sectional exploded perspective view of a ceramic filter of the present invention.
【図２】本発明のセラミックフィルターの組立状態を示
す斜視図である。FIG. 2 is a perspective view showing an assembled state of the ceramic filter of the present invention.
【図３】図２のＡ−Ａ線における断面図である。FIG. 3 is a cross-sectional view taken along line AA of FIG.
１ セラミックフィルター ２ 筒状成形体 ３ 耐熱無機繊維ペーパー DESCRIPTION OF SYMBOLS 1 Ceramic filter 2 Cylindrical molded object 3 Heat-resistant inorganic fiber paper
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐々木 章 神奈川県横浜市神奈川区松見町４−1000 (72)発明者 巾嶋 正 長野県上高井郡小布施町押羽707 (72)発明者 荒井 隆男 長野県長野市大字若槻東条８−４ ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akira Sasaki 4-1000 Matsumicho, Kanagawa-ku, Yokohama-shi, Kanagawa-ken 8-4 Wakatsuki Tojo, Nagano City, Nagano Prefecture
Claims (4)
し、一端を封止した形状に成形してなる嵩密度０．１５
〜１．０ｇ／ｃｍ3 の管状成形体中に、耐熱無機繊維ペ
ーパーを装入したことを特徴とするセラミックフィルタ
ー。1. A bulk density of 0.15 formed by bonding heat-resistant inorganic fibers with an inorganic binder and forming one end into a sealed shape.
A ceramic filter, wherein heat-resistant inorganic fiber paper is charged in a tubular molded product of about 1.0 g / cm 3 .
ペーパーの耐熱無機繊維が、（Ａ）４０〜５５重量％の
ＳｉＯ2 と４５〜６０重量％のＡｌ2 Ｏ3 からなる、も
しくは（Ｂ）前記（Ａ）に２０重量％以下のＺｒＯ2 を
含有してなる（但し、合計で１００重量％を越えない）
非晶質のセラミックファイバーであることを特徴とする
請求項１記載のセラミックフィルター。2. The heat-resistant inorganic fiber of the tubular molded article and / or the heat-resistant inorganic fiber paper comprises (A) 40 to 55% by weight of SiO 2 and 45 to 60% by weight of Al 2 O 3 , or (B) (A) contains 20% by weight or less of ZrO 2 (however, the total does not exceed 100% by weight)
The ceramic filter according to claim 1, wherein the ceramic filter is an amorphous ceramic fiber.
山折りと谷折りとを繰返して展開する側面を有する円筒
状物であり、かつ前記側面の山折り線が管状成形体の内
周壁に接触するように該管状成形体中に装入されること
を特徴とする請求項１または２記載のセラミックフィル
ター。3. The heat-resistant inorganic fiber paper is a cylindrical material having a side surface on which a mountain fold and a valley fold are repeatedly developed at a predetermined pitch, and the mountain fold line of the side surface contacts an inner peripheral wall of the tubular molded body. The ceramic filter according to claim 1, wherein the ceramic filter is inserted into the tubular molded body so as to perform the operation.
を有機バインダーまたは無機バインダーで結合して形成
されていることを特徴とする請求項１、２、３の何れか
一項記載のセラミックフィルター。4. The ceramic filter according to claim 1, wherein the heat-resistant inorganic fiber paper is formed by bonding heat-resistant inorganic fibers with an organic binder or an inorganic binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06849397A JP3332786B2 (en) | 1997-03-21 | 1997-03-21 | Ceramic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06849397A JP3332786B2 (en) | 1997-03-21 | 1997-03-21 | Ceramic filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10263339A true JPH10263339A (en) | 1998-10-06 |
| JP3332786B2 JP3332786B2 (en) | 2002-10-07 |
Family
ID=13375283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06849397A Expired - Fee Related JP3332786B2 (en) | 1997-03-21 | 1997-03-21 | Ceramic filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3332786B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045807A (en) * | 2011-10-12 | 2013-04-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Vacuum circulation degassing insert tube |
| CN110038368A (en) * | 2019-04-17 | 2019-07-23 | 合肥合意环保科技工程有限公司 | A kind of ceramic fibre chimney filter, preparation method and pressurization suction molding machine |
| CN110694353A (en) * | 2019-10-17 | 2020-01-17 | 中国科学院过程工程研究所 | Ceramic fiber catalytic filter element and integrated preparation method thereof |
-
1997
- 1997-03-21 JP JP06849397A patent/JP3332786B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045807A (en) * | 2011-10-12 | 2013-04-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Vacuum circulation degassing insert tube |
| CN110038368A (en) * | 2019-04-17 | 2019-07-23 | 合肥合意环保科技工程有限公司 | A kind of ceramic fibre chimney filter, preparation method and pressurization suction molding machine |
| CN110694353A (en) * | 2019-10-17 | 2020-01-17 | 中国科学院过程工程研究所 | Ceramic fiber catalytic filter element and integrated preparation method thereof |
| CN110694353B (en) * | 2019-10-17 | 2020-11-27 | 中国科学院过程工程研究所 | Ceramic fiber catalytic filter element and integrated preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3332786B2 (en) | 2002-10-07 |
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