JPH0422812Y2 - - Google Patents
Info
- Publication number
- JPH0422812Y2 JPH0422812Y2 JP1986015228U JP1522886U JPH0422812Y2 JP H0422812 Y2 JPH0422812 Y2 JP H0422812Y2 JP 1986015228 U JP1986015228 U JP 1986015228U JP 1522886 U JP1522886 U JP 1522886U JP H0422812 Y2 JPH0422812 Y2 JP H0422812Y2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- filter
- nitrogen oxides
- catalyst
- titanium oxide
- 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
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Catalysts (AREA)
- Chimneys And Flues (AREA)
- Incineration Of Waste (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は排ガス処理用触媒フイルターに関し、
特にボイラ、デイーゼル、都市ごみ焼却炉、焼結
炉などの窒素酸化物除去排ガス処理設備に用いら
れるものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a catalytic filter for exhaust gas treatment.
In particular, it is used in nitrogen oxide removal exhaust gas treatment equipment such as boilers, diesel engines, municipal waste incinerators, and sintering furnaces.
従来、上述した窒素酸化物除去用排ガス処理設
備から排出される窒素酸化物を除去し、かつばい
じんを捕集するためには次のように行なう。即
ち、ハニカムまたはペレツト状単体に触媒活性体
を担持した触媒を使つて、反応材としてNH3を
注入し、窒素酸化物を除去する。そして、ばいじ
んは電気集塵機又はバグフイルターにより捕集す
るシステムをとつている。
Conventionally, in order to remove nitrogen oxides and collect soot and dust discharged from the above-mentioned exhaust gas treatment equipment for removing nitrogen oxides, the following procedure is carried out. That is, using a catalyst in which a catalytic active material is supported on a honeycomb or pellet-like single body, NH 3 is injected as a reaction material to remove nitrogen oxides. A system is in place to collect soot and dust using an electrostatic precipitator or bag filter.
しかしながら、従来の排ガス処理用触媒フイル
ターによれば、排ガス中の窒素酸化物とばいじん
を除去するためには、各々の除去を目的に、触媒
及び集塵機能を別々に備えた設備を必要としてい
た。
However, according to the conventional catalyst filter for exhaust gas treatment, in order to remove nitrogen oxides and soot and dust from the exhaust gas, equipment with separate catalyst and dust collection functions is required for the purpose of removing each.
本考案は上記事情に鑑みてなされたもので、触
媒機能と集塵機能の両機能を具備し、もつて従来
のように前記両機能を別々に備えた設備を必要と
せずに窒素酸化物とばいじんを同時に除去可能な
排ガス処理用触媒フイルターを提供することを目
的とする。 The present invention was developed in view of the above circumstances, and has both a catalytic function and a dust collection function, and eliminates the need for separate equipment for both functions as in the past. An object of the present invention is to provide a catalyst filter for exhaust gas treatment that can simultaneously remove the following:
本考案は、多孔質セラミツクスからなる筒状の
フイルターの外周面に溶射法により多孔性の酸化
チタン層を形成し、かつ前記酸化チタン層に含浸
法によつて窒素酸化物除去用の触媒活性体を担持
したことを特徴とし、もつて従来のように触媒機
能と集塵機能を別々に備えた設備を必要とせず
に、同時に窒素酸化物とばいじんを除去しようと
したものである。
In the present invention, a porous titanium oxide layer is formed on the outer peripheral surface of a cylindrical filter made of porous ceramics by a thermal spraying method, and a catalytic active layer for removing nitrogen oxides is added to the titanium oxide layer by an impregnation method. It is characterized by supporting nitrogen oxides and removes nitrogen oxides and soot and dust at the same time, without requiring equipment with separate catalytic and dust collection functions as in the past.
本考案によれば、フイルター本体を多孔質セラ
ミツクスから構成することにより、排ガス中のば
いじんを集塵する。なお、集塵されて、フイルタ
ー本体に堆積したばいじんは、通常逆洗操作によ
り払い落す。また、窒素酸化物はフイルター本体
の表面に形成した触媒層により除去する。
According to the present invention, the filter body is made of porous ceramics to collect soot and dust in the exhaust gas. Incidentally, the collected dust that accumulates on the filter body is usually brushed off by backwashing. Further, nitrogen oxides are removed by a catalyst layer formed on the surface of the filter body.
以下、本考案の一実施例を第１図及び第２図を
参照して説明する。ここで、第１図は本考案に係
る排ガス処理用触媒フイルターの外観図、第２図
は第１図を縦方向に切断した部分断面図である。
An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Here, FIG. 1 is an external view of a catalytic filter for exhaust gas treatment according to the present invention, and FIG. 2 is a partial cross-sectional view of FIG. 1 taken in the longitudinal direction.
図中の１は、多孔質セラミツクスからなる筒状
のフイルター本体である。ここで、前記多孔質セ
ラミツクスとしては、例えばコージライト、ムラ
イト、ジルコニア、アルミナ、シリカ、炭化珪
素、窒化珪素、サイアロンなどが挙げられる。前
記フイルター本体１の表面上には、触媒層２が形
成されている。ここで、触媒層２は、溶射法によ
つて前記フイルター本体１の表面上に形成された
厚さ0.1〜30mmの多孔性の酸化チタン（TiO2）層
と、この酸化チタン層内に含浸法によつて担持し
た触媒活性体とから成る。なお、図中において、
G1は窒素酸化物とばいじんと反応剤NH3を含む
原ガスであり、G2はフイルター本体１を通過し
た処理されたクリーンなガスである。 1 in the figure is a cylindrical filter body made of porous ceramics. Here, examples of the porous ceramics include cordierite, mullite, zirconia, alumina, silica, silicon carbide, silicon nitride, and sialon. A catalyst layer 2 is formed on the surface of the filter body 1. Here, the catalyst layer 2 includes a porous titanium oxide (TiO 2 ) layer with a thickness of 0.1 to 30 mm formed on the surface of the filter body 1 by a thermal spraying method, and a porous titanium oxide (TiO 2 ) layer formed in the titanium oxide layer by an impregnation method. It consists of a catalytic active material supported by a catalyst. In addition, in the figure,
G 1 is the raw gas containing nitrogen oxides, soot, and reactant NH 3 , and G 2 is the treated clean gas that has passed through the filter body 1 .
第３図は、上記構造のフイルターの調整工程を
示したものである。即ち、まずフイルター本体１
を基材にし、その上に溶射法によつて多孔性の酸
化チタン層を形成し（工程１）、次に触媒活性体
の出発原料を水溶液のかたちで含浸させる（工程
２）。つづいて、含浸を終了したものを乾燥（工
程３）、焼成（工程４）することにより、触媒フ
イルターが出来上がる。 FIG. 3 shows the adjustment process of the filter having the above structure. That is, first, the filter body 1
is used as a base material, a porous titanium oxide layer is formed thereon by a thermal spraying method (step 1), and then a starting material for a catalyst active material is impregnated in the form of an aqueous solution (step 2). Subsequently, the impregnated product is dried (step 3) and fired (step 4) to complete a catalyst filter.
上記実施例によれば、多孔質セラミツクスから
なるフイルター本体１の表面上に、酸化チタン層
及び該チタン層内に担持した触媒活性体からなる
触媒層２を形成した構造となつているため、排ガ
ス中のばいじんは多孔質セラミツクスで集塵し、
窒素酸化物は触媒層２により除去できる。なお、
集塵された多孔質セラミツクスに堆積したばいじ
んは、逆洗操作により払い落す。 According to the above embodiment, the catalyst layer 2 consisting of a titanium oxide layer and a catalytic active substance supported in the titanium layer is formed on the surface of the filter body 1 made of porous ceramics, so that exhaust gas The dust inside is collected by porous ceramics,
Nitrogen oxides can be removed by the catalyst layer 2. In addition,
The dust deposited on the collected porous ceramics is removed by backwashing.
以上詳述した如く本考案によれば、従来のよう
に触媒機能と集塵機能を別々に備えた設備を必要
とせずに、排ガス中の窒素酸化物とばいじんの両
者を同時に除去可能な排ガス処理用触媒フイルタ
ーを提供できる。
As detailed above, the present invention provides an exhaust gas treatment system that can simultaneously remove both nitrogen oxides and soot from exhaust gas, without requiring separate equipment with catalytic and dust collection functions as in the past. Catalytic filters can be provided.
第１図は本考案の一実施例に係る排ガス処理用
触媒フイルターの外観図、第２図は第１図を縦方
向に切断した部分断面図、第３図は本考案に係る
排ガス処理用触媒フイルターの調整工程を湿した
図である。
１……フイルター本体、２……触媒層。
FIG. 1 is an external view of a catalyst filter for exhaust gas treatment according to an embodiment of the present invention, FIG. 2 is a partial sectional view of FIG. 1 taken in the longitudinal direction, and FIG. 3 is a catalyst for exhaust gas treatment according to the present invention. It is a diagram illustrating the filter adjustment process. 1... Filter body, 2... Catalyst layer.
Claims (1)
本体の外周面に溶射法により多孔性の酸化チタン
層を形成し、 かつ前記酸化チタン層に含浸法によつて窒素酸
化物除去用の触媒活性体を担持したことを特徴と
する排ガス処理用触媒フイルター。[Claims for Utility Model Registration] A porous titanium oxide layer is formed on the outer peripheral surface of a cylindrical filter body made of porous ceramics by a thermal spraying method, and nitrogen oxides are removed from the titanium oxide layer by an impregnation method. A catalytic filter for exhaust gas treatment, characterized in that it supports a catalytic active material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986015228U JPH0422812Y2 (en) | 1986-02-05 | 1986-02-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986015228U JPH0422812Y2 (en) | 1986-02-05 | 1986-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62130724U JPS62130724U (en) | 1987-08-18 |
| JPH0422812Y2 true JPH0422812Y2 (en) | 1992-05-26 |
Family
ID=30805966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986015228U Expired JPH0422812Y2 (en) | 1986-02-05 | 1986-02-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422812Y2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5520641A (en) * | 1978-07-31 | 1980-02-14 | Mitsubishi Heavy Ind Ltd | Catalyst composition |
| JPS5730551A (en) * | 1980-07-29 | 1982-02-18 | Ngk Spark Plug Co Ltd | Honeycomb-type catalyst for cleaning exhaust gas |
| DE3101026A1 (en) * | 1981-01-15 | 1982-08-26 | Engelhard Kali-Chemie Autocat Gmbh, 3000 Hannover | BIFUNCTIONAL FILTER FOR TREATING EXHAUST GAS |
| JPH0655251B2 (en) * | 1985-05-20 | 1994-07-27 | 旭硝子株式会社 | Dust removal purifier |
-
1986
- 1986-02-05 JP JP1986015228U patent/JPH0422812Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62130724U (en) | 1987-08-18 |
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