JPH034337Y2 - - Google Patents
Info
- Publication number
- JPH034337Y2 JPH034337Y2 JP1689587U JP1689587U JPH034337Y2 JP H034337 Y2 JPH034337 Y2 JP H034337Y2 JP 1689587 U JP1689587 U JP 1689587U JP 1689587 U JP1689587 U JP 1689587U JP H034337 Y2 JPH034337 Y2 JP H034337Y2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- exhaust gas
- layer
- temperature exhaust
- filter aid
- 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
- 239000002245 particle Substances 0.000 claims description 17
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 28
- 238000011001 backwashing Methods 0.000 description 7
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 5
- 238000010574 gas phase reaction Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 150000001805 chlorine compounds Chemical class 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 239000011592 zinc chloride Substances 0.000 description 3
- 235000005074 zinc chloride Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- 150000003752 zinc compounds Chemical class 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004110 Zinc silicate Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012210 heat-resistant fiber Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は高温排ガス中の煤塵を目詰りを生ずる
ことなく効率的に捕集することができる高温排ガ
ス浄化用フイルタに関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a filter for purifying high-temperature exhaust gas that can efficiently collect soot and dust in high-temperature exhaust gas without causing clogging.
（従来の技術）
塩化水素、硫黄酸化物、重金属塩化物等を含む
高温排ガス中の煤塵を捕集するためのフイルタと
しては、例えば本出願人の出願に係る実開昭61−
64315号公報に示されたもの等が知られている。
この公報に記載のものは、多孔質のセラミツクフ
イルタの表面に耐熱繊維と無機質粒状物との混合
体をプリコートしたものであるが、その後の使用
実績によれば、排ガス中に亜鉛化合物が含有され
ている場合にはプリコート層中のシリカ成分と反
応して粘着性の強い珪酸亜塩が生成され、これが
バインダの役割を果して逆洗が困難となる欠点を
持つたことが明らかとなつた。またプリコート層
中にシリカ成分が含まれないようにした場合に
も、気相反応等により生成された微細な粒子を捕
集した場合にはセラミツクフイルタとプリコート
層との間の付着力が増大し、やはり逆洗性が損わ
れるという欠点を持つことが明らかとなつた。(Prior Art) As a filter for collecting soot and dust in high-temperature exhaust gas containing hydrogen chloride, sulfur oxides, heavy metal chlorides, etc., for example, the Utility Model Application Publication No. 1983-1999 filed by the present applicant is used.
The one shown in Publication No. 64315 is known.
The filter described in this publication is one in which the surface of a porous ceramic filter is precoated with a mixture of heat-resistant fibers and inorganic granules, but subsequent usage results indicate that zinc compounds are contained in the exhaust gas. It has become clear that in the case where the silica component in the precoat layer reacts with the silica component, a highly adhesive silicate subsalt is produced, which acts as a binder and has the disadvantage of making backwashing difficult. Furthermore, even if the precoat layer does not contain silica components, the adhesion between the ceramic filter and the precoat layer will increase if fine particles generated by gas phase reactions are collected. However, it has become clear that this method also has the disadvantage of impaired backwashing performance.
（考案が解決しようとする問題点）
本考案は上記したような従来の問題点を解決し
て、高温排ガス中に塩化亜鉛や気相反応等により
生成された10μm以下の微細な粒子が含まれてい
る場合やその他の溶融固着物質が含有されている
場合にも、フイルタとしての建全性を損うことな
く高い逆洗効果を維持し、長期間にわたり安定に
使用することができる高温排ガス浄化用フイルタ
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 possibility that fine particles of 10 μm or less produced by zinc chloride or gas phase reactions are contained in high-temperature exhaust gas. A high-temperature exhaust gas purification system that maintains high backwashing effects without compromising the integrity of the filter even when it contains other molten and fixed substances, and can be used stably for a long period of time. It was completed for the purpose of being a commercial filter.
（問題点を解決するための手段）
本考案は濾過助剤保持体の表面に、酸化鉄を主
成分とする内層と、シリカを含まない粒状又は不
定形のセラミツク粒子の外層とからなる濾過助剤
層を形成したことを特徴とするものである。(Means for Solving the Problems) The present invention provides a filter aid comprising an inner layer mainly composed of iron oxide and an outer layer of granular or amorphous ceramic particles that do not contain silica on the surface of the filter aid holder. It is characterized by having a layer of agent formed thereon.
（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、１はフイルタ室、２はその内部を排ガス
導入室３と排ガス排出室４とに区分するフイルタ
支持板であり、本考案の高温排ガス浄化用フイル
タはこのフイルタ支持板２に取付けられるもので
あるが、フイルタ支持板２と一体に形成されたも
のであつてもよい。(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. 1 is a filter chamber, 2 is a filter support plate that divides the inside into an exhaust gas introduction chamber 3 and an exhaust gas discharge chamber 4; Although the filter for purifying high-temperature exhaust gas is attached to this filter support plate 2, it may be formed integrally with the filter support plate 2.
本考案の高温排ガス浄化用フイルタは上述のよ
うに、濾過助剤保持体５とその表面にプリコート
された濾過助剤層６とからなるものである。濾過
助剤保持体５は金網あるいは多孔板のような多数
の貫通孔を有し濾過助剤を保持できるものであれ
ばよいが、バグフイルタ、金属焼結フイルタ、セ
ラミツクフイルタのようにそれ自体がフイルタと
しての機能を持つものであつてもよく、本実施例
では炭化珪素質のセラミツクフイルタが用いられ
ている。また濾過助剤層６は酸化鉄を主成分とす
る内層７と、セラミツク粒子からなる外層８とか
らなるもので、内層７は好ましくは平均粒径が１
〜20μm、層厚10〜500μmのFe2O3粒子からなる。
酸化鉄、特にFe2O3は物質に対する付着性が高い
ため、濾過助剤保持体５と濾過助剤層６とを安定
に結びつけ、衝撃に対する濾過助剤層６の保持性
を高めることができる。一方、外層８は好ましく
は平均粒径が10〜100μm、層厚100〜2500μmの、
シリカを含まないセラミツク粒子、例えばAl2O3
系の粒子からなるものである。アルミナは高温下
でも極めて安定であり排ガス中に亜鉛化合物が含
まれている場合にも反応しない性質を有する。し
かし平均粒径が10μm未満であると気相反応等に
より生成した非常に微細な粒子を捕集した場合に
逆洗性が悪くなる傾向にあるので、10μm以上の
粒径としておくことが好ましい。 As described above, the filter for purifying high-temperature exhaust gas of the present invention is composed of the filter aid holder 5 and the filter aid layer 6 pre-coated on the surface thereof. The filter aid holder 5 may be anything that has many through holes such as a wire mesh or a perforated plate and can hold the filter aid. In this embodiment, a ceramic filter made of silicon carbide is used. The filter aid layer 6 is composed of an inner layer 7 mainly composed of iron oxide and an outer layer 8 made of ceramic particles, and the inner layer 7 preferably has an average particle size of 1.
~20μm, consisting of Fe2O3 particles with a layer thickness of 10-500μm.
Since iron oxide, especially Fe 2 O 3 , has high adhesion to substances, it can stably bond the filter aid holder 5 and the filter aid layer 6 and improve the retention of the filter aid layer 6 against impact. . On the other hand, the outer layer 8 preferably has an average particle size of 10 to 100 μm and a layer thickness of 100 to 2500 μm.
Silica-free ceramic particles, e.g. Al 2 O 3
It consists of particles of the system. Alumina is extremely stable even at high temperatures and has the property of not reacting even when zinc compounds are contained in exhaust gas. However, if the average particle size is less than 10 μm, backwashing properties tend to deteriorate when very fine particles generated by gas phase reactions are collected, so it is preferable to set the particle size to 10 μm or more.
なおこのような濾過助剤層６を形成するため、
フイルタ室１の排ガス導入室３には濾過助剤供給
装置９が接続されており、また逆流により濾過助
剤層６を剥離させるために、排ガス排出室４の上
方には加圧逆気流型の逆流装置１０が接続されて
いる。濾過助剤供給装置９は上記のような濾過助
剤を排ガスに分散して同伴させる形式のものであ
ればよく、コンプレツサによる圧縮空気により濾
過助剤を供給する方式や粉体定量フイーダとエジ
エクタとの組合せにより濾過助剤を供給する方式
のものなどが用いられる。 Note that in order to form such a filter aid layer 6,
A filter aid supply device 9 is connected to the exhaust gas introduction chamber 3 of the filter chamber 1, and a pressurized reverse air flow type device is installed above the exhaust gas discharge chamber 4 in order to peel off the filter aid layer 6 by backflow. A backflow device 10 is connected. The filtration agent supply device 9 may be a format in which the filtration assistant as described above is dispersed and accompanied by the exhaust gas, and a method of supplying a filtration agent by compressed air by the compassa, a dedicated dedicated fuda and an Egiector. A system in which a filter aid is supplied by a combination of these methods is used.
（作用）
このように構成されたものは、図示のようにフ
イルタ室１の内部に取付けて高温排ガスの濾過に
用いられるもので、高温排ガス中の煤塵類は濾過
助剤層６によつて捕集され、浄化されたガス成分
のみが濾過助剤保持体５を通つて排ガス排出室４
に取出されることは従来のものと同様である。し
かし本考案の高温排ガス浄化用フイルタは酸化鉄
を主成分とする内層７とシリカを含まないセラミ
ツク粒子の外層８とからなる濾過助剤層６を備え
ているので、高温排ガス中に硫酸塩や塩化物のよ
うな低融点溶融物質が存在している場合にもこれ
らは粒状又は不定形のセラミツク粒子からなる外
層８によつて捕捉され、逆洗を行えば排ガス中の
物質との反応性に乏しいアルミナを主成分とする
外層８から確実に剥離して脱落し、フイルタ性能
を回復させることができる。また高温排ガス中に
塩化亜鉛が含まれている場合にも、本考案の高温
排ガス浄化用フイルタはシリカ成分を含有してい
ないので従来のように粘着性の強い珪酸亜鉛が形
成されることはなく、やはり逆洗を容易に行える
こととなる。更にまた高温排ガス中に気相反応等
によつて生じた微細な粒子が含まれている場合に
も、フアイバを含有せずしかもアルミナを主成分
とする外層８を備えた本考案の濾過助剤層６は剥
離性が損われることがない。(Function) The device configured in this way is installed inside the filter chamber 1 as shown in the figure and used for filtering high-temperature exhaust gas, and soot and dust in the high-temperature exhaust gas are captured by the filter aid layer 6. Only the collected and purified gas components pass through the filter aid holder 5 to the exhaust gas discharge chamber 4.
It is the same as the conventional one. However, the high-temperature exhaust gas purifying filter of the present invention is equipped with a filter aid layer 6 consisting of an inner layer 7 mainly composed of iron oxide and an outer layer 8 of ceramic particles that do not contain silica. Even if low-melting substances such as chlorides are present, they will be captured by the outer layer 8 made of granular or amorphous ceramic particles, and backwashing will reduce their reactivity with substances in the exhaust gas. It can be reliably peeled off and fallen off from the outer layer 8 whose main component is poor alumina, and the filter performance can be restored. Furthermore, even if the high-temperature exhaust gas contains zinc chloride, the high-temperature exhaust gas purifying filter of the present invention does not contain silica components, so there is no formation of highly sticky zinc silicate as in the case of conventional filters. After all, backwashing can be performed easily. Furthermore, even when the high-temperature exhaust gas contains fine particles generated by gas phase reactions, etc., the filter aid of the present invention, which does not contain fibers and has an outer layer 8 mainly composed of alumina, can be used. The releasability of layer 6 is not impaired.
（考案の効果）
本考案は以上の説明からも明らかなように、高
温ガスを冷却することなく直接浄化することがで
き、特に低融点物質、塩化亜鉛、気相反応等によ
る微細粒子を含有する高温排ガスに対しても逆洗
性を低下させることなく安定して使用できるもの
である。よつて本考案は焼却炉からの排ガスのよ
うに硫黄酸化物、重金属塩化物、硫酸塩等を含む
高温排ガスの浄化に好適なものとして、その実用
的価値は極めて大きいものである。(Effects of the invention) As is clear from the above explanation, the present invention can directly purify high-temperature gas without cooling it, and in particular contains low melting point substances, zinc chloride, fine particles caused by gas phase reactions, etc. It can be used stably even with high-temperature exhaust gas without reducing backwashing performance. Therefore, the present invention has extremely great practical value as it is suitable for purifying high-temperature exhaust gas containing sulfur oxides, heavy metal chlorides, sulfates, etc., such as exhaust gas from an incinerator.
図面は本考案の高温排ガス浄化用フイルタの使
用状態を示す断面図である。
５……濾過助剤保持体、６……濾過助剤層、７
……内層、８……外層。
The drawing is a cross-sectional view showing the state in which the high-temperature exhaust gas purifying filter of the present invention is used. 5... Filter aid holder, 6... Filter aid layer, 7
...Inner layer, 8...Outer layer.
Claims (1)
とする内層７と、シリカを含まない粒状又は不
定形のセラミツク粒子の外層８とからなる濾過
助剤層６を形成したことを特徴とする高温排ガ
ス浄化用フイルタ。 ２ 内層７が平均粒径１〜20μm、層厚10〜
500μmの酸化鉄粒子からなり、外層８が平均粒
径10〜100μm、層厚100〜2500μmのセラミツク
粒子層からな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。 ３ 酸化鉄がFe2O3であり、セラミツク粒子が
Al2O3系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。[Claims for Utility Model Registration] 1. A filter aid consisting of an inner layer 7 containing iron oxide as a main component and an outer layer 8 of granular or amorphous ceramic particles not containing silica on the surface of the filter aid holder 5. A filter for purifying high-temperature exhaust gas, characterized in that a layer 6 is formed. 2 Inner layer 7 has an average particle size of 1 to 20 μm and a layer thickness of 10 to 20 μm.
The filter for purifying high-temperature exhaust gas according to claim 1, which is a utility model registration, consisting of iron oxide particles of 500 μm, with the outer layer 8 comprising a ceramic particle layer with an average particle diameter of 10 to 100 μm and a layer thickness of 100 to 2,500 μm. 3 Iron oxide is Fe 2 O 3 , and ceramic particles are
A filter for purifying high-temperature exhaust gas according to claim 1 or 2, which is an Al 2 O 3 based filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1689587U JPH034337Y2 (en) | 1987-02-07 | 1987-02-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1689587U JPH034337Y2 (en) | 1987-02-07 | 1987-02-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63126013U JPS63126013U (en) | 1988-08-17 |
| JPH034337Y2 true JPH034337Y2 (en) | 1991-02-05 |
Family
ID=30809166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1689587U Expired JPH034337Y2 (en) | 1987-02-07 | 1987-02-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034337Y2 (en) |
-
1987
- 1987-02-07 JP JP1689587U patent/JPH034337Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63126013U (en) | 1988-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4749671A (en) | Exhaust gas cleaning catalyst and process for production thereof | |
| EP1458457B1 (en) | Filter element | |
| CA2001192A1 (en) | High temperature filter | |
| JP2009519814A (en) | Coated diesel exhaust filter with low pressure drop | |
| US8388898B2 (en) | Ceramic filter element | |
| JPWO2003082770A1 (en) | Silicon carbide based porous material and method for producing the same | |
| EP1952871A1 (en) | Honeycomb structural body and exhaust gas purifying device | |
| JPH08196830A (en) | Bag filter material | |
| US6837911B2 (en) | Ceramic-made filter and process for production thereof | |
| JPS62129146A (en) | Catalyst for purifying exhaust gas and its preparation | |
| JPH01168311A (en) | Filter for combustible fine particles and nitrogen oxides | |
| KR960700809A (en) | A porous material having selective adsorptivity and a production method | |
| US4042352A (en) | Method for the removal of the dusts from combustion exhaust gases | |
| JP2001523547A (en) | Equipment for purifying flue gas containing mercury | |
| JP2926187B2 (en) | Ceramic gas filter and method of manufacturing the same | |
| JP2001096112A5 (en) | ||
| JP4649587B2 (en) | Exhaust gas purification filter and collection method of particulate matter | |
| JP2002159859A (en) | Exhaust gas purification catalyst | |
| JPS63134028A (en) | Dry desulfurizing method | |
| JPS62106843A (en) | Catalyst for purifying exhaust gas and its preparation | |
| JPS6333615Y2 (en) | ||
| JPH0243465Y2 (en) | ||
| JP3134182B2 (en) | Exhaust gas treatment method | |
| JPS627448A (en) | Catalyst for purifying exhaust gas and its preparation | |
| JPH0649135B2 (en) | Exhaust gas treatment device |