JPS63240912A - Ceramic filter for dustcollecting from exhaust gas - Google Patents
Ceramic filter for dustcollecting from exhaust gasInfo
- Publication number
- JPS63240912A JPS63240912A JP7298187A JP7298187A JPS63240912A JP S63240912 A JPS63240912 A JP S63240912A JP 7298187 A JP7298187 A JP 7298187A JP 7298187 A JP7298187 A JP 7298187A JP S63240912 A JPS63240912 A JP S63240912A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- fine grain
- average pore
- pore diameter
- dust
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 33
- 239000011148 porous material Substances 0.000 claims abstract description 36
- 239000000428 dust Substances 0.000 claims description 46
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 4
- 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 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229910052863 mullite Inorganic materials 0.000 abstract description 2
- -1 cordielite Chemical compound 0.000 abstract 1
- WHOPEPSOPUIRQQ-UHFFFAOYSA-N oxoaluminum Chemical compound O1[Al]O[Al]1 WHOPEPSOPUIRQQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 22
- 239000010410 layer Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 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 compound [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 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、鉄鋼、全屈分野などのダスト含有排ガスおよ
び石炭ガス化ガスおよび重油・石炭燃焼排ガスなどから
ダストを集塵する集塵用セラミ・ンクフィルターに関す
るものである。Detailed Description of the Invention (Industrial Field of Application) The present invention provides a dust-collecting ceramic for collecting dust from dust-containing exhaust gas from steel and steel fields, coal gasification gas, and heavy oil/coal combustion exhaust gas.・This is related to link filters.
（従来の技術）
従来、ダスト含有排ガスや燃焼排ガス等の高温ガス中か
らダストを捕集するセラミックフィルターとしては単層
構造のセラミックフィルターが使用されているが、近年
特開昭６０−６１０１９号公報にあるように複層構造の
セラミンクフィルターが低圧損として注目されている。(Prior Art) Conventionally, a single-layer ceramic filter has been used as a ceramic filter to collect dust from high-temperature gases such as dust-containing exhaust gas and combustion exhaust gas, but recently Japanese Patent Laid-Open No. 60-61019 discloses a ceramic filter with a single layer structure. As shown in , multi-layered ceramic filters are attracting attention for their low pressure loss.
（発明が解決しようとする問題点）
一般に、排ガスは約１μｍ前後の粒径を有しまたダスト
を必ず含有しており、適切な構造を有するセラミックフ
ィルターを採用しない場合複層構造とは言えども集塵後
の圧力損失が大きくなったｊり、集塵効率が低いなどの
問題点が起きる。(Problems to be Solved by the Invention) In general, exhaust gas has a particle size of about 1 μm and always contains dust, and if a ceramic filter with an appropriate structure is not used, even if it has a multilayer structure, Problems arise such as increased pressure loss after dust collection and low dust collection efficiency.
例えば細粒部の平均細孔径が大きい場合ダストが細粒部
潔くまで侵入し、逆洗しても圧力１員失の増加があり実
用レベルの圧力損失以上になるとともに、更に集塵効率
が低いなどの問題点がある。For example, if the average pore diameter of the fine grain part is large, dust will penetrate into the fine grain part, and even if it is backwashed, there will be an increase in pressure loss, which will exceed the practical level of pressure loss, and the dust collection efficiency will further decrease. There are other problems.
一方、逆に細粒部の平均細孔径が非常に小さい場合ダス
トは組粒部表面で堆積するが、平均細孔径が小さいため
圧力損失は集塵するｎ（１でもすでに高いなどの問題点
がある。On the other hand, if the average pore diameter of the fine grain part is very small, dust will accumulate on the surface of the aggregate part, but because the average pore diameter is small, the pressure loss is already high. be.
本発明の目的は上述した不具合を罫消して、集塵後の圧
力損失の経時変化が小さいとともに集塵効率が高く実用
面で秀れた排ガス集塵用セラミックフィルターを提供し
ようとするものである。The purpose of the present invention is to eliminate the above-mentioned drawbacks and provide a ceramic filter for exhaust gas dust collection that has a small change in pressure loss after dust collection over time, has high dust collection efficiency, and is excellent in practical use. .
（問題点を解決するための手段）
本発明の排ガス集塵用セラミックフィルターは、セラミ
ック多孔体よりなる支持層の片側の表面に、平均細孔径
が１〜１０μｍで厚さが平均細孔径の少なくとも１０倍
以上の細粒部を備えたことを特徴とするものである。(Means for Solving the Problems) The ceramic filter for exhaust gas dust collection of the present invention has an average pore diameter of 1 to 10 μm and a thickness of at least at least the average pore diameter on one surface of a support layer made of a ceramic porous body. It is characterized by having a fine grain part that is 10 times or more larger.
（作 用）
上述した構成において、セラミック多孔体よりなる支持
層の片側の表面に細粒部を設けるとともに、この細粒部
の平均細孔径を１〜１０μｍ、厚さを平均細孔径の少な
くとも１０倍以上とすることにより、排ガス中の粒径１
μｍ前後のダスト分を低圧損かつ高い集塵効率で集塵す
ることができる。(Function) In the above structure, a fine grain part is provided on one surface of the support layer made of a porous ceramic body, and the fine grain part has an average pore diameter of 1 to 10 μm and a thickness of at least 10 μm of the average pore diameter. By increasing the particle size by more than twice as much, the particle size in the exhaust gas becomes
Dust around μm can be collected with low pressure loss and high dust collection efficiency.
なお、本発明で細粒部の平均細孔径を１〜１０μｍ、厚
さを平均細孔径の少なくとも１０倍以上としたのは以下
の理由による。In addition, the reason why the average pore diameter of the fine grain portion is set to 1 to 10 μm and the thickness is set to at least 10 times the average pore diameter in the present invention is as follows.
第２図に示すように、約１μｍ′のダスト含有排ガスの
ダスト侵入深さを調べたところ、ダスト侵入深さは細粒
部の平均細孔径が１０μｍまではその細粒部の平均細孔
径の約１０倍の深さまで侵入しており、１０μｍ以上で
は細粒部の平均細孔径の１０倍以上の深さまで侵入して
おり、次いで細粒部の平均細孔径が太き（なればなる程
更に奥深くまでダストが侵入することが解った。言い換
えれば、高い集塵効率及び低圧損を得る為の細粒部の必
要最小深さは第２図にて決めることができる。As shown in Figure 2, when the dust penetration depth of dust-containing exhaust gas of approximately 1 μm' was investigated, it was found that the dust penetration depth is smaller than the average pore diameter of the fine grain portion until the average pore diameter of the fine grain portion is 10 μm. It penetrates to a depth of about 10 times, and when it is 10 μm or more, it penetrates to a depth of more than 10 times the average pore diameter of the fine grain part, and then the average pore diameter of the fine grain part becomes thicker (the more It was found that dust penetrates deeply.In other words, the required minimum depth of the fine grain part to obtain high dust collection efficiency and low pressure loss can be determined from Figure 2.
また、第３図は第２図にて得られた細粒部必要最小厚さ
を有するセラミックフィルターを各細粒部の平均細孔径
を変えて作製し、それらについて初期圧力損失と集塵後
の圧力損失及び集塵効率を測定したものである。第３図
において、細粒部の平均細孔径が１０μｍ以上の場合は
初期圧力損失が低いけれども、集塵後の圧力損失は平均
細孔径が大きくなるに従い増大が激しい。これは、ダス
トが奥深くまで侵入する為逆洗を行っても回復が小さい
為である。また、集塵効率も低下が激しい。In addition, Figure 3 shows ceramic filters having the required minimum thickness of the fine grain part obtained in Figure 2, which were fabricated by changing the average pore diameter of each fine grain part, and the initial pressure loss and after dust collection. This is a measurement of pressure loss and dust collection efficiency. In FIG. 3, when the average pore diameter of the fine grain portion is 10 μm or more, the initial pressure loss is low, but the pressure loss after dust collection increases rapidly as the average pore diameter increases. This is because the dust penetrates deep and recovery is small even if backwashing is performed. Furthermore, the dust collection efficiency is also significantly reduced.
一方、細粒部の平均細孔径が１μｍ以下の場合集塵効率
は高いが、初期圧力損失が平均細孔径が小さくなるに従
い指数関数的に高くなり実用上問題である。On the other hand, when the average pore diameter of the fine particle portion is 1 μm or less, the dust collection efficiency is high, but the initial pressure loss increases exponentially as the average pore diameter becomes smaller, which is a practical problem.
以上のことから、通常要求される集塵後の圧、力１員失
が１０００１００Ｏ以下および集塵効率が９９．９％以
上の条件を満たすとともに初期圧力損失も低い範囲とし
て細粒部の平均細孔径を１〜１０μｍと規定した。また
、同様に細粒部の厚さは平均細孔部の１０倍以上と限定
した。厚さは好ましくは平均細孔径の１０〜８０倍がよ
い。Based on the above, the average fineness of the fine grain part is set as a range that satisfies the normally required conditions of pressure and force loss of 1000100 O or less and dust collection efficiency of 99.9% or more and that the initial pressure loss is low. The pore diameter was defined as 1 to 10 μm. Similarly, the thickness of the fine grain part was limited to 10 times or more the average pore part. The thickness is preferably 10 to 80 times the average pore diameter.
さらに、支持層を形成するセラミック多孔体の厚さは特
に限定するものではないが、５０〜２００μｍであると
好ましいのは、その平均細孔径と曲げ強さとの関係を示
す第４図から明らかなように、２００μｍ以下であれば
フィルターとしての曲げ強度が２００ ｋｇ／ｃｍ”を
超えるとともに、５０μｍ未満では全体の圧力損失が大
きくなりすぎるからである。Further, the thickness of the ceramic porous body forming the support layer is not particularly limited, but it is preferably 50 to 200 μm, as is clear from Figure 4, which shows the relationship between the average pore diameter and bending strength. If the thickness is 200 μm or less, the bending strength as a filter exceeds 200 kg/cm”, and if it is less than 50 μm, the overall pressure loss becomes too large.
（実施例）
第１図（ａ）、 （ｂ）、 （ｃ）はそれぞれ本発明の
排ガス集塵用セラミックフィルターの一実施例を示す部
分断面図である。第１図（ａ）に示す実施例では、セラ
ミック多孔体よりなる支持Ｎ１の表面に平均細孔径が１
〜１０μｍで厚さが平均細孔径の少なくとも１０倍以上
となるように細粒部２を設けて、本発明の排ガス集塵用
セラミックフィルター３を構成した例を示している。第
１図（ｂ）に示す実施例では、支持層１の表面の外側に
露出した粒子４の間に細粒部２を形成して排ガス集塵用
セラミックフィルター３を構成した例を示している。さ
らに、第１図（ｃ）に示す実施例では、支持層１と細粒
部２との間に平均細孔径が支持層１と細粒部２の平均細
孔径の中間の値である中間部５を設けて排ガス集塵用セ
ラミックフィルター３を構成した例を示している。
。(Example) FIGS. 1(a), 1(b), and 1(c) are partial sectional views showing an example of the ceramic filter for collecting exhaust gas dust of the present invention. In the embodiment shown in FIG. 1(a), the average pore diameter is 1 on the surface of the support N1 made of a ceramic porous body.
An example is shown in which the ceramic filter 3 for collecting exhaust gas dust of the present invention is constructed by providing the fine grain portion 2 so as to have a thickness of ~10 μm and at least 10 times the average pore diameter. The embodiment shown in FIG. 1(b) shows an example in which a fine particle portion 2 is formed between the particles 4 exposed on the outside of the surface of the support layer 1 to constitute a ceramic filter 3 for collecting exhaust gas dust. . Furthermore, in the embodiment shown in FIG. 1(c), there is an intermediate portion between the support layer 1 and the fine grain portion 2 in which the average pore diameter is an intermediate value between the average pore diameters of the support layer 1 and the fine grain portion 2. 5 is provided to configure a ceramic filter 3 for collecting exhaust gas dust.
.
また、細粒部２の位置はフィルター３の形状が円筒状の
場合はその外面又は内面のどちらかの面に形成してあれ
ばよい。さらに、フィルター３の強度の面から、支持Ｎ
１の平均細孔径は５０〜２００μｍ好ましくは８０〜１
５０μｍとしている。支持層、細粒部および中間部を構
成するセラミックスの材質としては、ＳｉＣ，Ａ ４２
２０：ｌ、 コージェライト、ジルコニア、ムライト
及びその複合体を使用すると好適である。Furthermore, when the filter 3 has a cylindrical shape, the fine grain portion 2 may be formed on either the outer surface or the inner surface. Furthermore, from the viewpoint of the strength of the filter 3, the support N
1 has an average pore diameter of 50 to 200 μm, preferably 80 to 1
It is set to 50 μm. The material of the ceramics constituting the support layer, the fine grain part and the intermediate part is SiC, A42
20:l, cordierite, zirconia, mullite and composites thereof are preferably used.
以下、実際の例について説明する。An actual example will be explained below.
裏立健
外径６０ｍｍ、内径４０ｍｍ、長さ３００ｍｍの円筒形
状であって、外周面に平均細孔径１００μｍの支持層と
平均細孔径５μｍで厚さ１００μｍの細粒部とを第１図
（ａ）に示すように形成したセラミックフィルターを準
備した。準備したセラミックフィルターにタストｅ度１
０ｇ／Ｎｍ’、ダスト平均粒径１μｍ、排ガス温度２０
０°Ｃの重油燃焼排ガスを、濾過速度６ｍ／分、排ガス
圧力２０００ｍｍ Ａ ｑの条件で流通して集塵試験を
行なった。なお、逆洗はＮ２ガスを５ｋｇ／ｃｍ２の圧
力で１０分に１回の間隔で１回当り０．５秒間実施した
。It has a cylindrical shape with an outer diameter of 60 mm, an inner diameter of 40 mm, and a length of 300 mm, and has a support layer with an average pore diameter of 100 μm on the outer peripheral surface and a fine grain part with an average pore diameter of 5 μm and a thickness of 100 μm on the outer peripheral surface. A ceramic filter formed as shown in ) was prepared. Tast e degree 1 on the prepared ceramic filter
0g/Nm', dust average particle size 1μm, exhaust gas temperature 20
A dust collection test was conducted by flowing heavy oil combustion exhaust gas at 0°C under conditions of a filtration rate of 6 m/min and an exhaust gas pressure of 2000 mm Aq. Note that backwashing was performed using N2 gas at a pressure of 5 kg/cm2 at intervals of once every 10 minutes for 0.5 seconds each time.
以上の条件で集塵試験を行なった結果、初期圧力損失は
１５０ｍｍＡｑに対し集塵開始１０００時間後でも圧力
損失は１０００１００Ｏで安定しており、集塵効率も９
９．９％であった。As a result of conducting a dust collection test under the above conditions, the initial pressure loss was 150 mmAq, but even after 1000 hours after the start of dust collection, the pressure loss was stable at 1000100 O, and the dust collection efficiency was 9.
It was 9.9%.
（発明の効果）
以上詳細に説明したところから明らがなように、本発明
の排ガス集塵用セラミックフィルターによれば、集塵後
の圧力損失の経時変化が小さいとともに集塵効率が高く
実用面で秀れた排ガス集塵用セラミックフィルターを得
ることができる。(Effects of the Invention) As is clear from the above detailed explanation, according to the ceramic filter for collecting exhaust gas dust of the present invention, the change in pressure loss over time after dust collection is small, and the dust collection efficiency is high enough for practical use. It is possible to obtain a ceramic filter for exhaust gas dust collection that is excellent in terms of both aspects.
第１図（ａ） 、 （ｂ） 、 （ｃ）はそれぞれ本発
明の排ガス集塵用セラミックフィルターの１実施例を示
す部分断面図、
第２図はダスト侵入深さと細粒部の平均細孔径との関係
を示すグラフ、
第３図は圧力損失及び集塵効率と細粒部の平均細孔径と
の関係を示すグラフ、
第４図はフィルターの曲げ強度と支持層の平均細孔径と
の関係を示すグラフである。
１・・・支持層
２・・・細粒部
３・・・セラミックフィルター
４・・・粒子
５・・・中間部
特許出願人 日本碍子株式会社
第１図
（ａ〕（ｂ） （ｃ＞
第３図Figures 1 (a), (b), and (c) are partial cross-sectional views showing one embodiment of the ceramic filter for collecting exhaust gas dust of the present invention, and Figure 2 shows the dust penetration depth and the average pore diameter of the fine particle portion. Figure 3 is a graph showing the relationship between pressure loss and dust collection efficiency and the average pore diameter of the fine particle part. Figure 4 is the relationship between the bending strength of the filter and the average pore diameter of the support layer. This is a graph showing. 1...Supporting layer 2...Fine particle portion 3...Ceramic filter 4...Particle 5...Intermediate portion Patent applicant Nippon Insulator Co., Ltd. Figure 1 (a) (b) (c> Figure 3
Claims (1)
平均細孔径が１〜１０μｍで厚さが平均細孔径の少なく
とも１０倍以上の細粒部を備えたことを特徴とする排ガ
ス集塵用セラミックフィルター。 ２、前記セラミック多孔体の平均細孔径が５０〜２００
μｍである特許請求の範囲第１項記載の排ガス集塵用セ
ラミックフィルター。[Claims] 1. On one surface of a support layer made of a ceramic porous body,
1. A ceramic filter for collecting dust from exhaust gas, characterized by having fine grain portions having an average pore diameter of 1 to 10 μm and a thickness of at least 10 times the average pore diameter. 2. The average pore diameter of the ceramic porous body is 50 to 200.
The ceramic filter for collecting exhaust gas dust according to claim 1, which has a diameter of μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7298187A JPS63240912A (en) | 1987-03-28 | 1987-03-28 | Ceramic filter for dustcollecting from exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7298187A JPS63240912A (en) | 1987-03-28 | 1987-03-28 | Ceramic filter for dustcollecting from exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63240912A true JPS63240912A (en) | 1988-10-06 |
Family
ID=13505074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7298187A Pending JPS63240912A (en) | 1987-03-28 | 1987-03-28 | Ceramic filter for dustcollecting from exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63240912A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073178A (en) * | 1989-04-07 | 1991-12-17 | Asahi Glass Company, Ltd. | Ceramic filter for a dust-containing gas and method for its production |
| US5198006A (en) * | 1989-04-07 | 1993-03-30 | Asahi Glass Company, Ltd. | Ceramic filter for a dust-containing gas and method for its production |
| US5545243A (en) * | 1993-12-15 | 1996-08-13 | Ngk Insulators, Ltd. | Porous ceramic honeycomb filter |
| WO2008136232A1 (en) * | 2007-04-27 | 2008-11-13 | Ngk Insulators, Ltd. | Honeycomb filter |
| JP2009172604A (en) * | 2009-03-26 | 2009-08-06 | Kyocera Corp | Ceramic filter and its manufacturing method |
| WO2010110011A1 (en) | 2009-03-26 | 2010-09-30 | 日本碍子株式会社 | Honeycomb filter and method for producing honeycomb filter |
| WO2011040554A1 (en) * | 2009-09-30 | 2011-04-07 | 住友大阪セメント株式会社 | Exhaust gas purification filter |
| JP2011189246A (en) * | 2010-03-12 | 2011-09-29 | Ngk Insulators Ltd | Honeycomb filter, and method of producing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4918326A (en) * | 1972-06-10 | 1974-02-18 | ||
| JPS6061019A (en) * | 1983-09-13 | 1985-04-08 | Asahi Glass Co Ltd | Ceramic filter for dust collection |
| JPS6372319A (en) * | 1986-09-12 | 1988-04-02 | Ebara Corp | Filter for use at high temperature |
-
1987
- 1987-03-28 JP JP7298187A patent/JPS63240912A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4918326A (en) * | 1972-06-10 | 1974-02-18 | ||
| JPS6061019A (en) * | 1983-09-13 | 1985-04-08 | Asahi Glass Co Ltd | Ceramic filter for dust collection |
| JPS6372319A (en) * | 1986-09-12 | 1988-04-02 | Ebara Corp | Filter for use at high temperature |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073178A (en) * | 1989-04-07 | 1991-12-17 | Asahi Glass Company, Ltd. | Ceramic filter for a dust-containing gas and method for its production |
| US5198006A (en) * | 1989-04-07 | 1993-03-30 | Asahi Glass Company, Ltd. | Ceramic filter for a dust-containing gas and method for its production |
| US5545243A (en) * | 1993-12-15 | 1996-08-13 | Ngk Insulators, Ltd. | Porous ceramic honeycomb filter |
| WO2008136232A1 (en) * | 2007-04-27 | 2008-11-13 | Ngk Insulators, Ltd. | Honeycomb filter |
| JP5616059B2 (en) * | 2007-04-27 | 2014-10-29 | 日本碍子株式会社 | Honeycomb filter |
| US8444739B2 (en) | 2007-04-27 | 2013-05-21 | Ngk Insulators, Ltd. | Honeycomb filter |
| WO2010110010A1 (en) | 2009-03-26 | 2010-09-30 | 日本碍子株式会社 | Honeycomb filter and method for producing honeycomb filter |
| WO2010110011A1 (en) | 2009-03-26 | 2010-09-30 | 日本碍子株式会社 | Honeycomb filter and method for producing honeycomb filter |
| US8470254B2 (en) | 2009-03-26 | 2013-06-25 | Ngk Insulators, Ltd. | Honeycomb filter and method for producing honeycomb filter |
| US8470255B2 (en) | 2009-03-26 | 2013-06-25 | Ngk Insulators, Ltd. | Honeycomb filter and method for producing honeycomb filter |
| JP2009172604A (en) * | 2009-03-26 | 2009-08-06 | Kyocera Corp | Ceramic filter and its manufacturing method |
| WO2011040554A1 (en) * | 2009-09-30 | 2011-04-07 | 住友大阪セメント株式会社 | Exhaust gas purification filter |
| JPWO2011040554A1 (en) * | 2009-09-30 | 2013-02-28 | 住友大阪セメント株式会社 | Exhaust gas purification filter |
| EP2484423A4 (en) * | 2009-09-30 | 2014-01-08 | Sumitomo Osaka Cement Co Ltd | Exhaust gas purifying filter |
| JP2011189246A (en) * | 2010-03-12 | 2011-09-29 | Ngk Insulators Ltd | Honeycomb filter, and method of producing the same |
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