JPH0243465Y2 - - Google Patents
Info
- Publication number
- JPH0243465Y2 JPH0243465Y2 JP5015786U JP5015786U JPH0243465Y2 JP H0243465 Y2 JPH0243465 Y2 JP H0243465Y2 JP 5015786 U JP5015786 U JP 5015786U JP 5015786 U JP5015786 U JP 5015786U JP H0243465 Y2 JPH0243465 Y2 JP H0243465Y2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- heat
- filter
- temperature exhaust
- resistant
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 239000012210 heat-resistant fiber Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 16
- 238000011001 backwashing Methods 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 239000000428 dust Substances 0.000 description 8
- 150000001805 chlorine compounds Chemical class 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 7
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 235000005074 zinc chloride Nutrition 0.000 description 3
- 239000011592 zinc chloride Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 1
- 239000004110 Zinc silicate Substances 0.000 description 1
- -1 alumina fibers Chemical compound 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は重金属の塩化物等を含有する高温排ガ
ス中のダストをフイルタの目詰りを生ずることな
く確実に捕集することができる逆洗可能な高温排
ガス浄化用フイルタ装置に関するものである。[Detailed description of the invention] (Field of industrial application) This invention is capable of backwashing, which can reliably collect dust in high-temperature exhaust gas containing heavy metal chlorides, etc., without clogging the filter. The present invention relates to a filter device for purifying high-temperature exhaust gas.
（従来の技術）
高温排ガス中のダストを捕集するためのフイル
タ装置としては、焼結金属フイルタやセラミツク
フイルタが用いられており、特に腐食性の成分を
含むガスを浄化するためには、実公昭53−43997、
実公昭55−42104号公報に示されるようにセラミ
ツク質の微細粒子をガラス結合剤等により焼結さ
せたセラミツクフイルタが広く用いられている。
また、これらのセラミツクフイルタの表面に珪藻
土、アスベスト粉、シリカガラス繊維等をプリコ
ートして目詰りを防止するとともに逆洗ができる
ようにすることも知られている。ところがこれら
の従来の高温排ガス浄化用フイルタ装置は、高温
排ガス中に重金属の塩化物や硫酸塩が含まれてい
る場合には目詰りし易い欠点があることが指摘さ
れており、しかも一旦目詰りを生ずると逆洗によ
つて目詰りを除去することが困難であつた。(Prior art) Sintered metal filters and ceramic filters are used as filter devices to collect dust in high-temperature exhaust gas. Kosho 53-43997,
As shown in Japanese Utility Model Publication No. 55-42104, ceramic filters in which fine ceramic particles are sintered with a glass binder or the like are widely used.
It is also known to precoat the surface of these ceramic filters with diatomaceous earth, asbestos powder, silica glass fiber, etc. to prevent clogging and to enable backwashing. However, it has been pointed out that these conventional filter devices for high-temperature exhaust gas purification have the disadvantage of being easily clogged when the high-temperature exhaust gas contains heavy metal chlorides or sulfates, and furthermore, once clogged, When this occurs, it is difficult to remove the clogging by backwashing.
（考案が解決しようとする問題点）
本考案は上記のような従来の問題点を解決し
て、重金属の塩化物等が含まれている高温の排ガ
ス中のダストをフイルタの目詰りを生ずることな
く確実に捕集することができ、また逆洗によるフ
イルタ表面からのダストの除去が可能な高温排ガ
ス浄化用フイルタ装置を目的として完成されたも
のである。(Problems to be solved by the invention) This invention solves the above-mentioned conventional problems, and eliminates the problem of filter clogging by dust in high-temperature exhaust gas containing heavy metal chlorides, etc. This was completed with the aim of creating a filter device for purifying high-temperature exhaust gas that can reliably collect dust without any dust and can also remove dust from the filter surface by backwashing.
（問題点を解決するための手段）
本考案者は上記のような従来の問題点について
研究を重ねた結果、高温排ガス中に重金属の塩化
物、特に塩化亜鉛が含まれている場合にはフイル
タの成分である二酸化珪素と反応して珪酸亜鉛を
生じ、これが目詰りの原因となるとともに強固な
層を形成して逆洗を困難化させ、また耐熱性の無
機質濾過助剤でプリコートを施しても、濾過助剤
中の二酸化珪素との間で同様の反応を生ずること
を究明した。本考案はかかる知見に基づいて完成
されたものであり、浄化室内を排ガス導入室と排
ガス排出室とに区画する支持板に耐熱性多孔体か
らなるフイルタ支持体を配設し、排ガス導入室側
には耐熱繊維の供給装置を設けてフイルタ支持体
の外表面にこの耐熱繊維の供給装置から供給され
た二酸化珪素を含まない耐熱繊維の集合体からな
る濾過層を付着させるとともに、排ガス排出室に
はこの濾過層をフイルタ支持体から除去するため
の逆洗装置を設けたことを特徴とするものであ
る。(Means for solving the problem) As a result of repeated research on the conventional problems mentioned above, the inventor of the present invention has found that when high-temperature exhaust gas contains heavy metal chlorides, especially zinc chloride, filter It reacts with silicon dioxide, which is a component of the filter, to produce zinc silicate, which causes clogging and forms a strong layer that makes backwashing difficult. It was also discovered that a similar reaction occurs with silicon dioxide in filter aids. The present invention was completed based on this knowledge, and a filter support made of a heat-resistant porous material is disposed on the support plate that divides the purification chamber into an exhaust gas introduction chamber and an exhaust gas discharge chamber, and the exhaust gas introduction chamber side A heat-resistant fiber supply device is installed in the filter support, and a filtration layer made of an aggregate of heat-resistant fibers that do not contain silicon dioxide is attached to the outer surface of the filter support. is characterized in that it is provided with a backwashing device for removing this filtration layer from the filter support.
（実施例）
次に本考案を図示の実施例について詳細に説明
すると、第１図において１は浄化室、２は該浄化
室１を排ガス導入室３と排ガス排出室４とに区画
する支持板、５は支持板２に透設された取付孔に
首部を支持されて取付けられたフイルタ支持体で
ある。フイルタ支持体５は耐熱性と通気性のある
耐熱性多孔体からなるものであり、金網状のもの
やパンチングメタルのような多孔板状のものを用
いるほか、焼結金属フイルタやセラミツクフイル
タのようなそれ自体がフイルタ機能を持つもので
あつてよい。浄化室１の排ガス導入室３側には耐
熱繊維をガス流に同伴させて供給する供給装置６
が設けられており、アルミナ、ジルコニア、チタ
ニア、炭化珪素等からなる二酸化珪素を含まない
耐熱繊維を供給してフイルタ支持体５の表面に耐
熱繊維の集合体からなる濾過層７を付着させてい
る。耐熱繊維としては繊維径が１〜10μｍ、繊維
長20〜200μｍのものが相互の絡み合いにより強
固な集合体を形成するとともに捕集性能を向上さ
せるために好ましい。またその集合体からなる濾
過層７は層厚500〜5000μｍ、気孔率80％以上と
することが好ましい。なお８は排ガス排出室４側
に設けられた一般的な加圧逆気流型あるいはパル
スジエツト逆気流型の逆洗装置である。(Embodiment) Next, the present invention will be explained in detail with reference to the illustrated embodiment. In FIG. , 5 is a filter support whose neck is supported in a mounting hole formed through the support plate 2 and is mounted. The filter support 5 is made of a heat-resistant porous material with heat resistance and air permeability, and in addition to using a wire mesh-like material or a perforated plate-like material such as punched metal, it may also be made of a sintered metal filter or a ceramic filter. The filter itself may have a filter function. On the exhaust gas introduction chamber 3 side of the purification chamber 1, there is a supply device 6 for supplying heat-resistant fibers along with the gas flow.
is provided, and heat-resistant fibers containing no silicon dioxide made of alumina, zirconia, titania, silicon carbide, etc. are supplied, and a filtration layer 7 made of an aggregate of heat-resistant fibers is attached to the surface of the filter support 5. . As the heat-resistant fibers, those having a fiber diameter of 1 to 10 μm and a fiber length of 20 to 200 μm are preferable because they form a strong aggregate due to mutual entanglement and improve collection performance. Further, it is preferable that the filtration layer 7 made of the aggregate has a layer thickness of 500 to 5000 μm and a porosity of 80% or more. Reference numeral 8 denotes a general pressurized backflow type or pulse jet backflow type backwashing device provided on the exhaust gas discharge chamber 4 side.
（作用）
このように構成されたものは、先ず耐熱繊維の
供給装置６からアルミナ繊維のような二酸化珪素
を含まない耐熱繊維をガス流に同伴させて排ガス
導入室３内へ供給するとともに排ガス排出室４内
のガスを吸引することにより、耐熱多孔体からな
るフイルタ支持体５の外表面に耐熱繊維の集合体
からなる濾過層７を形成した状態で使用されるも
のである。そして高温排ガスを排ガス供給室３か
ら供給し、フイルタ支持体５の外表面に形成され
た濾過層７によつて高温排ガス中のダストを捕集
させ、浄化されたガスを排ガス排出室４から排出
させることは従来と同様である。しかし本考案の
ものは耐熱性多孔体からなるフイルタ支持体５の
外表面に二酸化珪素を含まない耐熱繊維の集合体
からなる濾過層７を付着させたものであるから、
500℃を越える高温の排ガスをそのまま処理する
ことができることは勿論、高温排ガス中に塩化亜
鉛のような重金属の塩化物が含まれている場合に
も化学反応を生ずることなくダストは濾過層７の
表面で確実に捕集される。従つて重金属の塩化物
はフイルタ支持体５の内部にまで侵入することは
ないので、これらによる目詰りもほとんど発生し
ない。また長期間の使用により濾過層７の圧力損
失が次第に増加してきた場合には排ガス排出室４
に設けられた逆洗装置８から圧縮空気を噴出させ
て逆洗を行えば、従来のような強固な化合物が形
成されていない濾過層７を容易にフイルタ支持体
５の表面から剥離させることができ、その後再び
供給装置６から耐熱繊維を供給して新しい濾過層
７を形成すれば、濾過能力を容易に回復させるこ
とができる。(Function) In the device configured as described above, first, heat-resistant fibers that do not contain silicon dioxide, such as alumina fibers, are supplied from the heat-resistant fiber supply device 6 into the exhaust gas introduction chamber 3 along with the gas flow, and the exhaust gas is discharged. By suctioning the gas in the chamber 4, a filtration layer 7 made of an aggregate of heat-resistant fibers is formed on the outer surface of a filter support 5 made of a heat-resistant porous material. Then, high-temperature exhaust gas is supplied from the exhaust gas supply chamber 3, dust in the high-temperature exhaust gas is collected by the filtration layer 7 formed on the outer surface of the filter support 5, and the purified gas is discharged from the exhaust gas discharge chamber 4. This is the same as before. However, in the present invention, a filtration layer 7 made of an aggregate of heat-resistant fibers that does not contain silicon dioxide is attached to the outer surface of a filter support 5 made of a heat-resistant porous material.
Not only can high-temperature exhaust gas exceeding 500°C be treated as is, but even if the high-temperature exhaust gas contains chlorides of heavy metals such as zinc chloride, the dust can be removed from the filtration layer 7 without causing a chemical reaction. Reliably collected on the surface. Therefore, heavy metal chlorides do not penetrate into the inside of the filter support 5, so clogging due to them hardly occurs. In addition, if the pressure loss of the filtration layer 7 gradually increases due to long-term use, the exhaust gas discharge chamber 4
If backwashing is performed by blowing out compressed air from a backwashing device 8 provided in If the heat-resistant fibers are then supplied from the supply device 6 again to form a new filtration layer 7, the filtration ability can be easily restored.
（考案の効果）
本考案は以上の説明からも明らかなように、フ
イルタ支持体の外表面に耐熱繊維の供給装置から
供給された二酸化珪素を含まない耐熱繊維の集合
体からなる濾過層を付着させることにより、従来
の高温排ガス浄化用フイルタ装置においては短時
間で目詰りを生ずるために処理することができな
かつた重金属の塩化物等を含有する高温排ガスを
も目詰りを生ずることなく浄化することができ、
また逆洗によつて容易に濾過能力の回復を図るこ
とができるものである。このように本考案は高温
排ガスを冷却することなく直接浄化することがで
き、特に塩化亜鉛のような目詰りを生じさせ易い
物質を含有する焼却炉排ガスの浄化に好適なもの
である。よつて本考案は従来の問題点を解消した
高温排ガス浄化用フイルタ装置として、その実用
価値は極めて大きいものである。(Effect of the invention) As is clear from the above explanation, the present invention attaches a filtration layer made of an aggregate of heat-resistant fibers containing no silicon dioxide supplied from a heat-resistant fiber supply device to the outer surface of the filter support. By doing so, high-temperature exhaust gas containing heavy metal chlorides, etc., which could not be treated with conventional filter devices for high-temperature exhaust gas purification due to clogging in a short period of time, can be purified without clogging. It is possible,
Furthermore, the filtration ability can be easily restored by backwashing. As described above, the present invention can directly purify high-temperature exhaust gas without cooling it, and is particularly suitable for purifying incinerator exhaust gas that contains substances that easily cause clogging, such as zinc chloride. Therefore, the present invention has extremely great practical value as a filter device for purifying high-temperature exhaust gas that solves the problems of the conventional method.
第１図は本考案の実施例を示す断面図である。
１：浄化室、２：支持板、３：排ガス導入室、
４：排ガス排出室、５：フイルタ支持体、６：供
給装置、７：濾過層、８：逆洗装置。
FIG. 1 is a sectional view showing an embodiment of the present invention. 1: Purification chamber, 2: Support plate, 3: Exhaust gas introduction chamber,
4: Exhaust gas discharge chamber, 5: Filter support, 6: Supply device, 7: Filter layer, 8: Backwash device.
Claims (1)
４とに区画する支持板２に耐熱性多孔体からな
るフイルタ支持体５を配設し、排ガス導入室３
側には耐熱繊維の供給装置６を設けてフイルタ
支持板５の外表面にこの耐熱繊維の供給装置６
から供給された二酸化珪素を含まない耐熱繊維
の集合体からなる濾過層７を付着させるととも
に、排ガス排出室４にはこの濾過層７をフイル
タ支持板５から除去するための逆洗装置８を設
けたことを特徴とする高温排ガス浄化用フイル
タ装置。 ２ 耐熱繊維が二酸化珪素を含まないアルミナ、
ジルコニア、チタニア、又は炭化珪素の繊維で
ある実用新案登録請求の範囲第１項記載の高温
排ガス浄化用フイルタ装置。 ３ 耐熱繊維が繊維径１〜10μｍ、繊維長が20〜
200μｍのものである実用新案登録請求の範囲
第１項又は第２項記載の高温排ガス浄化用フイ
ルタ装置。 ４ フイルタ支持体５がセラミツク質の多孔体か
らなるものである実用新案登録請求の範囲第１
項又は第２項又は第３項記載の高温排ガス浄化
用フイルタ装置。 ５ 濾過層７が層厚500〜5000μｍ、気孔率80％
以上のものである実用新案登録請求の範囲第１
項又は第２項又は第３項又は第４項記載の高温
排ガス浄化用フイルタ装置。[Scope of Claim for Utility Model Registration] 1. A filter support 5 made of a heat-resistant porous material is disposed on a support plate 2 that divides the purification chamber 1 into an exhaust gas introduction chamber 3 and an exhaust gas discharge chamber 4, and the exhaust gas introduction chamber 3
A heat-resistant fiber supply device 6 is provided on the side, and a heat-resistant fiber supply device 6 is provided on the outer surface of the filter support plate 5.
A filtration layer 7 made of an aggregate of heat-resistant fibers containing no silicon dioxide supplied from the exhaust gas discharge chamber 4 is attached, and a backwashing device 8 is provided in the exhaust gas discharge chamber 4 to remove this filtration layer 7 from the filter support plate 5. A filter device for purifying high-temperature exhaust gas characterized by: 2 Alumina whose heat-resistant fibers do not contain silicon dioxide,
The filter device for purifying high-temperature exhaust gas according to claim 1, which is a fiber of zirconia, titania, or silicon carbide. 3 The heat-resistant fiber has a fiber diameter of 1 to 10 μm and a fiber length of 20 to 20 μm.
A filter device for purifying high-temperature exhaust gas according to claim 1 or 2 of the utility model registration claim, which has a diameter of 200 μm. 4 Utility model registration claim 1, in which the filter support 5 is made of a porous ceramic material
The filter device for purifying high-temperature exhaust gas according to item 1 or 2 or 3. 5 Filtration layer 7 has a layer thickness of 500 to 5000 μm and a porosity of 80%
Scope of Claims for Utility Model Registration
The filter device for purifying high-temperature exhaust gas according to item 1 or 2 or 3 or 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5015786U JPH0243465Y2 (en) | 1986-04-03 | 1986-04-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5015786U JPH0243465Y2 (en) | 1986-04-03 | 1986-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62164918U JPS62164918U (en) | 1987-10-20 |
| JPH0243465Y2 true JPH0243465Y2 (en) | 1990-11-19 |
Family
ID=30873253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5015786U Expired JPH0243465Y2 (en) | 1986-04-03 | 1986-04-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243465Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009273995A (en) * | 2008-05-13 | 2009-11-26 | Tokyo Electric Power Co Inc:The | Method for removing asbestos dust and dust removing apparatus |
-
1986
- 1986-04-03 JP JP5015786U patent/JPH0243465Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62164918U (en) | 1987-10-20 |
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