JPS6356814B2 - - Google Patents
Info
- Publication number
- JPS6356814B2 JPS6356814B2 JP15966981A JP15966981A JPS6356814B2 JP S6356814 B2 JPS6356814 B2 JP S6356814B2 JP 15966981 A JP15966981 A JP 15966981A JP 15966981 A JP15966981 A JP 15966981A JP S6356814 B2 JPS6356814 B2 JP S6356814B2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- silicon carbide
- carbon particles
- resistance
- fine carbon
- 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.)
- Expired
Links
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 9
- 239000002759 woven fabric Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 19
- 229910052799 carbon Inorganic materials 0.000 description 19
- 239000002245 particle Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 241000264877 Hippospongia communis Species 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Materials (AREA)
Description
【発明の詳細な説明】
本発明は炭化珪素繊維を用いた可燃物燃焼除去
用フイルターに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter for removing combustibles by combustion using silicon carbide fibers.
最近、ヂーゼルエンジンより発生するカーボン
微粒が社会衛生上の公害問題となつた。これら微
粒カーボン、油煙など、不完全燃焼の際発生する
可燃性物質の除去フイルターとしては、ハニカム
状やペレツト状触媒、触媒性金網などが使用さ
れ、また濾過の際濾過物に残留したカーボンを除
去するのには発熱可能なフイルターが用いられ、
そのため通電により発熱する金属ワイヤーメツシ
ユやヒーターをうめこんだハニカム等が使用され
てきた。然しハニカム状触媒は除去効率が悪く、
一旦カーボンによる被毒を受けると取りはずして
加熱等で再生しなければならない。またハニカム
触媒もペレツト触媒も振動に弱くヂーゼルエンジ
ン等振動の大きいエンジン等に使用されると破壊
飛散の危険が大きく、一方金属ワイヤーメツシユ
は耐酸性が低いため腐食により寿命が短く、ハニ
カム埋込みヒーターは熱効率が悪い難があつた。 Recently, carbon particles generated by diesel engines have become a public health pollution problem. Honeycomb-shaped or pellet-shaped catalysts, catalytic wire mesh, etc. are used as filters to remove combustible substances such as fine carbon particles and oil smoke that are generated during incomplete combustion.They also remove carbon remaining in the filtrate during filtration. A filter that generates heat is used to
For this reason, metal wire meshes that generate heat when energized or honeycombs embedded with heaters have been used. However, honeycomb-shaped catalysts have poor removal efficiency;
Once poisoned by carbon, it must be removed and regenerated by heating, etc. In addition, both honeycomb catalysts and pellet catalysts are weak against vibrations, and when used in engines with large vibrations such as diesel engines, there is a high risk of breakage and scattering.On the other hand, metal wire mesh has low acid resistance and therefore has a short lifespan due to corrosion. had the problem of poor thermal efficiency.
本発明はこれを改良するためになされたもの
で、フエルト状または織布状に成形された炭化珪
素繊維成形体で、両端部に金属化処理された電極
部分を有することを特徴とする可燃物燃焼除去用
炭化珪素繊維フイルターを提供するもので、柔軟
で耐熱性が大きく通気性が大でフイルターとして
十分な性能を有し、電極間に通電すれば付着カー
ボン等の導電性によつて発熱性をもち、カーボン
の微粒を燃焼除去できるものである。 The present invention has been made to improve this, and is a combustible material characterized by being a silicon carbide fiber molded body shaped into a felt or woven fabric, and having electrode portions metallized at both ends. This product provides a silicon carbide fiber filter for combustion removal.It is flexible, has high heat resistance, has high air permeability, and has sufficient performance as a filter.When electricity is passed between the electrodes, it generates heat due to the conductivity of the attached carbon etc. It has the ability to burn and remove fine carbon particles.
こゝで炭化珪素繊維フイルターは、市販の炭化
珪素繊維を、気孔率30〜50％のフエルト状、織布
状、クロス状等に織りまたは成形したものでよ
い。この成形体の両端に金属化処理を行うことが
必要で、この具体的な方法は、Si単独またはSi10
〜90重量％、残部Fe、Ni、Coの少なく共２種以
上の混合物とからなる組成物の粉末を含むペース
トを塗付し、非酸化性雰囲気で1100〜1800℃で焼
成するもので、既に特願昭55−184793号として出
願済みのものである。これにより設定した電極に
70Vの電圧を印加した場合、微粒カーボンが付着
する前の状態では電気抵抗が約1KΩある。併し
これをヂーゼルエンジンの排気マフラーに取り付
けると微粒カーボンが濾過されると共にフイルタ
ーには多量の微粒カーボンが付着し導電性かつ発
熱性をもち、カーボンの燃焼除去が可能となるも
のである。 The silicon carbide fiber filter may be one obtained by weaving or molding commercially available silicon carbide fibers into a felt, woven cloth, or cloth shape having a porosity of 30 to 50%. It is necessary to perform metallization treatment on both ends of this molded body.
A paste containing a powder of a composition consisting of ~90% by weight and a mixture of at least two or more of Fe, Ni, and Co with the balance is applied and fired at 1100 to 1800°C in a non-oxidizing atmosphere. This has already been filed as Japanese Patent Application No. 184793/1983. This allows the set electrode to
When a voltage of 70V is applied, the electrical resistance is approximately 1KΩ before fine carbon particles are attached. However, when this is attached to the exhaust muffler of a diesel engine, fine carbon particles are filtered out, and a large amount of fine carbon particles adhere to the filter, making it conductive and heat generating, making it possible to burn and remove the carbon.
以下実施例により説明する。 This will be explained below using examples.
実施例 １
平均直径12μ、密度2.5ｇ／cm3からなる市販の炭
化珪素繊維の厚さ0.25mmの織布を200mm×100mmの
長方形に切断し、端面を仕上げ20枚重ねて厚さ５
mmのフイルターとした。この両端にSi70％、
Fe15％、Ni15％を含む混合粉末のペーストをつ
け乾燥後1250℃、２時間真空中で珪化処理し、さ
らにその上に銀ペーストを塗付し800℃で熱処理
し電極とした。この電極をSUS410のステンレス
板ではさみこみ抵抗を測つたところ800Ωであつ
た。ころ斜視図を第１図に示す。１は炭化珪素フ
イルター、２は金属化された電極部、３はステン
レス板、４はステンレス板を止めるボルトであ
る。このフイルターを図示しないステンレス金網
で補強し直接噴射式5000℃のヂーゼルエンジンの
マフラーに取り付け、100Km−６モードの走行を
行つた後、カーボン微粒が付着した状態で抵抗を
測定すると１Ωとなり電極間に24V印加すると10
秒でフイルターの温度は1000℃となり、排気ガス
が酸素過剰の状態で微粒カーボンは焼き切れ、使
用前の炭化珪素の状態になつた。これは云うまで
もなくフイルターに付着したカーボンが、電極間
の電気抵抗を下げたため、通電が可能となり微粒
カーボンが発熱燃焼したものである。また本来カ
ーボンが燃焼すると共にフイルタ−の抵抗が大き
くなり、電気導電がなくなり、そこで燃焼が停止
する筈であるが、全ての微粒カーボンが順調に燃
焼したのは、このフイルターに使用した炭化珪素
繊維の熱伝導率が高いためであると考えられる。
なお、完全に燃焼後は自動的に電流は停止し十分
な安全性を有する。Example 1 A 0.25 mm thick woven fabric made of commercially available silicon carbide fibers with an average diameter of 12 μm and a density of 2.5 g/cm 3 was cut into a 200 mm x 100 mm rectangle, the end faces were finished, and 20 sheets were stacked to a thickness of 5 mm.
mm filter. Si70% on both ends,
A paste of mixed powder containing 15% Fe and 15% Ni was applied, dried, and then silicified at 1250°C for 2 hours in a vacuum. Silver paste was then applied on top and heat treated at 800°C to form an electrode. When this electrode was sandwiched between SUS410 stainless steel plates and the resistance was measured, it was 800Ω. A perspective view of the roller is shown in Fig. 1. 1 is a silicon carbide filter, 2 is a metallized electrode part, 3 is a stainless steel plate, and 4 is a bolt for fixing the stainless steel plate. This filter was reinforced with a stainless wire mesh (not shown) and attached to the muffler of a direct injection type 5000℃ diesel engine, and after running for 100km in 6 mode, the resistance was measured with carbon particles attached and it was 1Ω between the electrodes. 10 when 24V is applied
In seconds, the temperature of the filter reached 1000 degrees Celsius, and the exhaust gas was in an excess of oxygen, burning off the fine carbon particles and turning them into silicon carbide before use. Needless to say, this is because the carbon adhering to the filter lowers the electrical resistance between the electrodes, allowing current to flow and burning the fine carbon particles. In addition, as carbon burns, the resistance of the filter increases, electrical conductivity disappears, and combustion should stop at that point, but the reason why all the fine carbon particles burned smoothly was because of the silicon carbide fibers used in this filter. This is thought to be due to its high thermal conductivity.
Furthermore, after complete combustion, the current automatically stops, providing sufficient safety.
なお、別にフイルター間の抵抗を検知する回路
を設定することにより、フイルターに一定量の微
粒カーボンが付着した場合には、その抵抗値を検
知し自動的に通電し、微粒カーボンを焼ききるこ
とも可能である。 In addition, by setting up a separate circuit that detects the resistance between the filters, if a certain amount of fine carbon adheres to the filter, the resistance value will be detected and the power will be automatically applied to burn off the fine carbon. It is possible.
また、この実施例では電極形成部にSi−Fe−
Ni系組成物を用いたが、本発明はこれにこだわ
るものではなく、Si単味等でも金属化できるもの
ならどんな方法でも有利に利用できる。また、用
途もヂーゼルエンジンの排気ガス中の微粒カーボ
ンの除去にこだわることなく、石炭、ゴミ、重油
等燃焼の際のスゝ、油煙等の燃焼除去にも応用で
き産業上の利用価値の大きいものである。 In addition, in this example, the electrode forming part is Si-Fe-
Although a Ni-based composition was used, the present invention is not limited to this, and any method that can metalize even Si alone can be advantageously used. In addition, the application is not limited to the removal of particulate carbon in the exhaust gas of diesel engines, but can also be applied to the combustion removal of smoke, oil smoke, etc. when burning coal, garbage, heavy oil, etc., and has great industrial value. It is.
第１図は本発明の一例を示す斜視図である。 FIG. 1 is a perspective view showing an example of the present invention.
Claims (1)
素繊維成形体で、両端部に金属化処理された電極
部分を有することを特徴とする可燃物燃焼除去用
炭化珪素繊維フイルター。1. A silicon carbide fiber filter for burning and removing combustibles, which is a silicon carbide fiber molded body shaped into a felt or woven fabric, and has metalized electrode portions at both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56159669A JPS5861814A (en) | 1981-10-07 | 1981-10-07 | Silicon carbide fiber filter for burning and removing combustible material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56159669A JPS5861814A (en) | 1981-10-07 | 1981-10-07 | Silicon carbide fiber filter for burning and removing combustible material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5861814A JPS5861814A (en) | 1983-04-13 |
| JPS6356814B2 true JPS6356814B2 (en) | 1988-11-09 |
Family
ID=15698744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56159669A Granted JPS5861814A (en) | 1981-10-07 | 1981-10-07 | Silicon carbide fiber filter for burning and removing combustible material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5861814A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332555A (en) * | 2019-07-08 | 2019-10-15 | 湖北科谱瑞环境资源科技有限公司 | A kind of monoblock type catalytic combustion device for organic waste gases |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0623532B2 (en) * | 1985-04-30 | 1994-03-30 | トヨタ自動車株式会社 | Filter for collecting Patty quilts |
| JPH0257121U (en) * | 1988-10-14 | 1990-04-25 | ||
| JP2002047070A (en) * | 2000-07-31 | 2002-02-12 | Ibiden Co Ltd | Ceramics structure |
| KR20040029665A (en) * | 2002-10-02 | 2004-04-08 | 이재춘 | ELECTRICALLY HEATABLE FIBROUS Si/SiC PARTICULATE FILTER MEDIA AND METHOD OF MAKING SAME |
-
1981
- 1981-10-07 JP JP56159669A patent/JPS5861814A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332555A (en) * | 2019-07-08 | 2019-10-15 | 湖北科谱瑞环境资源科技有限公司 | A kind of monoblock type catalytic combustion device for organic waste gases |
| CN110332555B (en) * | 2019-07-08 | 2021-12-14 | 湖北科谱瑞环境资源科技有限公司 | Integral organic waste gas catalytic combustion device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5861814A (en) | 1983-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3000750B2 (en) | Self-heating filter | |
| DE160482T1 (en) | CATALYTIC EXHAUST FILTER FOR PARTICLES OF A DIESEL ENGINE. | |
| JPH06257422A (en) | Particulate trap for diesel engine | |
| JPH01304022A (en) | Honeycobm-shape filter | |
| JPS58143817A (en) | Filter apparatus for removing combustible fine particle | |
| EP0504422B1 (en) | Self-heating filter | |
| JPS6356814B2 (en) | ||
| JPH0985028A (en) | Filter for treating carbon particle in exhaust gas and carbon particle device using the filter | |
| JPS6239247B2 (en) | ||
| JPH07127434A (en) | Diesel particulate filter | |
| JPH0985027A (en) | Filter for treating carbon particle in exhaust gas and carbon particle device using the filter | |
| JPS58119317A (en) | Filter device for removal of combustible fine particles | |
| JP3561950B2 (en) | Porous ceramic and method for producing the same | |
| JPH07136435A (en) | Filter for exhaust gas purifying apparatus and production thereof | |
| JP2009011921A (en) | Diesel exhaust gas purifying filter | |
| JPH08100630A (en) | Spherical electric conductor charging type particulate collecting filter | |
| JPH0643805B2 (en) | Exhaust gas filter | |
| JPH0610649A (en) | Filter for exhaust gas emission control | |
| JPS6235854Y2 (en) | ||
| JPH01244110A (en) | Device and method for removing combustible discharged substance for internal combustion engine | |
| JPS6157223A (en) | Filter for collecting diesel particulate | |
| JPS5881421A (en) | Ceramic honeycomb filter | |
| JPS5884017A (en) | Filter made of fibrous silicon carbide used for removing combustible matter by combustion | |
| JPS58202014A (en) | Apparatus for purifying fine particles in exhaust gas of internal-combustion engine | |
| JPH0649136B2 (en) | Exhaust gas filter |