JP3270076B2 - Method and apparatus for producing plate catalyst - Google Patents
Method and apparatus for producing plate catalystInfo
- Publication number
- JP3270076B2 JP3270076B2 JP24614191A JP24614191A JP3270076B2 JP 3270076 B2 JP3270076 B2 JP 3270076B2 JP 24614191 A JP24614191 A JP 24614191A JP 24614191 A JP24614191 A JP 24614191A JP 3270076 B2 JP3270076 B2 JP 3270076B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- rolls
- sheet
- roll
- plate
- 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 - Fee Related
Links
- 239000003054 catalyst Substances 0.000 title claims description 79
- 238000000034 method Methods 0.000 title description 12
- 239000002759 woven fabric Substances 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 239000012784 inorganic fiber Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000012210 heat-resistant fiber Substances 0.000 description 11
- 239000004809 Teflon Substances 0.000 description 9
- 229920006362 Teflon® Polymers 0.000 description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000000835 fiber Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は板状触媒の製造方法およ
び装置に係り、特に無機繊維織布に触媒成分を担持させ
た板状触媒の製造方法および装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a plate catalyst, and more particularly to a method and an apparatus for producing a plate catalyst in which a catalyst component is supported on a woven inorganic fiber fabric.
【０００２】[0002]
【従来の技術】ボイラなどの燃焼装置から排出される燃
焼排ガス中の窒素酸化物を除去する方法としてアンモニ
ア接触還元法が広く採用されている。これに使用する窒
素酸化物除去用触媒（以下脱硝触媒という）には種々の
特性が要求される。2. Description of the Related Art An ammonia catalytic reduction method is widely used as a method for removing nitrogen oxides in combustion exhaust gas discharged from a combustion device such as a boiler. Various characteristics are required for the nitrogen oxide removing catalyst (hereinafter, referred to as a denitration catalyst) used for this.
【０００３】一つの特性として低ダスト堆積性があげら
れる。この特性は排ガス中に含有するダストが脱硝触媒
層に堆積すると圧力損失が増大して排ガスが流れにくく
なるとともに触媒の有効接触面積が減少するのでダスト
を堆積しにくくする必要がある。これを実現するために
形状が種々検討され、現在では板状触媒や、蜂の巣形状
のハニカム触媒が多用されている。このうち板状触媒を
多量生産する方法として図３、図４に示す製造装置によ
りエキスパンドメタル基板（ステンレスなどの金属薄板
を金網状に加工したもの）７に触媒ペーストを上下塗布
ロール４，４′を用いて塗布する方法がある（特願昭５
４−１０３１０４号）。One characteristic is low dust accumulation. This property requires that when dust contained in the exhaust gas accumulates on the denitration catalyst layer, the pressure loss increases and the exhaust gas becomes difficult to flow, and the effective contact area of the catalyst decreases. In order to realize this, various shapes have been studied. At present, a plate catalyst or a honeycomb catalyst having a honeycomb shape are frequently used. Among them, as a method of mass-producing a plate-like catalyst, a catalyst paste is applied to an expanded metal substrate (a metal thin plate made of stainless steel or the like into a metal mesh) 7 using upper and lower application rolls 4, 4 'by a manufacturing apparatus shown in FIGS. (Japanese Patent Application No. Sho 5)
4-103104).
【０００４】図３は模式図であり図４は斜視図を示す。
上塗布ロール４、下塗布ロール４′は矢印の方向に回転
し、触媒ペーストが塗布ロールに付着するのを防止する
ためのポリエチレン製または紙製の上シート３、下シー
ト３′を介してエキスパンドメタル基板７の上に触媒ペ
ースト１を置いて上塗布ロール４と下塗布ロール４′の
間を通過させて板状触媒８を得る方法である。上下シー
トにはさまれた基板と触媒ペーストがロール間を通過す
る時にロールから圧力を受け触媒ペーストは基板上面は
もちろん基板下面にも網目を通して伸展され塗布される
ことになる。図５〜６は、上下シート３、３′の間に、
無機繊維からなる上、下耐熱繊維織布をはさみ、上下織
布の間に触媒ペースト１を供給しつつ、上下塗布ロール
４、４′の間を通過させて触媒を塗布する従来技術を示
す。FIG. 3 is a schematic view and FIG. 4 is a perspective view.
The upper coating roll 4 and the lower coating roll 4 'rotate in the direction of the arrows, and are expanded via a polyethylene or paper upper sheet 3 and a lower sheet 3' for preventing the catalyst paste from adhering to the coating roll. This is a method in which a catalyst paste 1 is placed on a metal substrate 7 and passed between an upper coating roll 4 and a lower coating roll 4 ′ to obtain a plate-like catalyst 8. When the substrate and the catalyst paste sandwiched between the upper and lower sheets pass between the rolls, the catalyst paste receives pressure from the rolls, and the catalyst paste is spread and applied to the upper surface of the substrate as well as the lower surface of the substrate through the mesh. FIGS. 5 and 6 show that between the upper and lower sheets 3, 3 ',
A conventional technique in which an upper and lower heat-resistant fiber woven fabric made of inorganic fibers is sandwiched between the upper and lower woven fabrics, and the catalyst is applied by passing the catalyst paste 1 between the upper and lower application rolls 4 and 4 '.
【０００５】[0005]
【発明が解決しようとする課題】上記従来技術は、エキ
スパンドメタル基板、または無機繊維織布基板に触媒ペ
ーストを塗布する方法としては非常に有利な方法である
が、上下に付着防止シートを必要とし、そのシートも繰
返して使用することができないため、シートの購入費
用、処分費用が必要である。またシートに付着した触媒
成分は粘着性の強い性状なのではがすことも困難であ
り、高価な触媒成分を無駄に捨てていることになり問題
点の一つであった。また、触媒を塗布する基板に無機ガ
ラス繊維を網目状に織った織布を採用する場合、織布の
単位面積当りの触媒塗布量が少ない場合は、図７ａのよ
うに触媒は網目状繊維間隙を埋めてはいるが、繊維上で
は付着量がほとんどないか、少量付着しているにすぎな
い。この場合は、付着防止シートと触媒とのハガレがき
れいにできる。The above prior art is a very advantageous method for applying a catalyst paste to an expanded metal substrate or a woven inorganic fiber substrate, but requires an adhesion prevention sheet at the top and bottom. Since the sheet cannot be used repeatedly, the cost of purchasing and disposing of the sheet is required. Further, since the catalyst component attached to the sheet has a strong adhesive property, it is difficult to remove the catalyst component, and the expensive catalyst component is wasted. In addition, when a woven fabric in which inorganic glass fibers are woven in a mesh shape is used for the substrate to which the catalyst is applied, and when the amount of the catalyst applied per unit area of the woven fabric is small, the catalyst is not connected to the mesh fibers as shown in FIG. , But little or no adhesion on the fiber. In this case, peeling between the anti-adhesion sheet and the catalyst can be cleaned.
【０００６】一方、触媒塗布量が多い場合は、板状触媒
表面には網目状繊維部分はほとんど存在せず、この場合
は付着防止シートと触媒とのハガレが悪く連続製造する
ことができない。そこで触媒塗布量を前記２つの場合の
中間程度とした場合は、無機繊維網状体の繊維の交叉点
部分のみが触媒が付着していない状態となる。この場合
を図７のｂに示す。この場合も触媒のハガレはやや悪
い。触媒活性の点からみると、図７ａの触媒では脱硝性
能が低く、他の２つの場合は触媒性能が高い。したがっ
て、連続的に製造する場合は触媒担持量を少なくして活
性の点を我慢するという問題があった。On the other hand, when the applied amount of the catalyst is large, there is almost no net-like fiber portion on the surface of the plate-shaped catalyst. Therefore, when the applied amount of the catalyst is about the middle between the above two cases, only the intersections of the fibers of the inorganic fiber network have no catalyst attached. This case is shown in FIG. Also in this case, peeling of the catalyst is somewhat bad. In terms of catalytic activity, the catalyst of FIG. 7a has low denitration performance, and the other two cases have high catalyst performance. Therefore, in the case of continuous production, there is a problem that the amount of supported catalyst is reduced and the activity point is tolerated.
【０００７】本発明の目的は、上記した従来技術の問題
点を改善するためになされたもので、上側のシート３を
不要とし、上側シートについてのシートの繰出し、巻取
り機構も不要として機械装置を簡略化して、同等以上の
塗布性能が得られる板状触媒の製造方法および装置を提
供することにある。。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and eliminates the need for the upper sheet 3 and eliminates the need for a sheet feeding and winding mechanism for the upper sheet. To provide a method and an apparatus for producing a plate-like catalyst, which can achieve the same or higher coating performance. .
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
本願の第１の発明は、一対の加圧塗布ロールの間を無機
繊維織布からなる基板と触媒ペーストよりなる素材を通
過させて、基板に触媒ペーストを塗布する板状触媒の製
造方法において、上記ロールのうち一方はフッ素樹脂を
コーティングしたロール、他方はフッ素樹脂をコーティ
ングしないロールを用い、かつ、フッ素樹脂をコーティ
ングしないロールと前記素材の間には付着防止用シート
を介在させ、フッ素樹脂コーティングロールと素材の間
には付着防止用シートを介在させないで、上記素材を上
記ロールの間を通過させて基板に触媒ペーストを塗布す
ることを特徴とする板状触媒の製造方法に関する。Means for Solving the Problems To achieve the above object, a first invention of the present application is to pass a substrate made of an inorganic fiber woven fabric and a material made of a catalyst paste between a pair of pressure applying rolls, In the method for producing a plate-like catalyst for applying a catalyst paste to a substrate, one of the rolls uses a fluororesin-coated roll, the other uses a non-fluororesin-coated roll, and the non-fluororesin-coated roll and the material Applying a catalyst paste to the substrate by passing the material between the rolls without interposing an anti-adhesion sheet between the rolls and the fluororesin coating roll and the material without the interposition of an anti-adhesion sheet. And a method for producing a plate catalyst.
【０００９】第２の発明は、上記第１の発明において、
一対の加圧塗布ロールと、両塗布ロールの間に無機繊維
織布からなる基板と触媒ペーストよりなる素材を供給す
る装置とを備えた板状触媒の製造装置において、フッ素
樹脂コーティングロールと同樹脂コーティングなしのロ
ールにて前記一対の加圧ロールを構成し、かつ、前記素
材供給装置をフッ素樹脂コーティングなしのロールと前
記素材との間にのみ付着防止用シートを介在させてロー
ル間を通過させる構成としたことを特徴とする板状触媒
の製造装置に関する。[0009] The second invention is the above-mentioned first invention, wherein:
In a plate-shaped catalyst manufacturing apparatus having a pair of pressure application rolls and a device for supplying a substrate made of an inorganic fiber woven fabric and a catalyst paste between the two application rolls, a fluororesin coating roll and the same resin are used. The uncoated rolls constitute the pair of pressure rolls, and the material supply device is passed between the rolls with only an adhesion preventing sheet interposed between the rolls without the fluororesin coating and the material. The present invention relates to an apparatus for producing a plate-shaped catalyst, wherein the apparatus has a configuration.
【００１０】[0010]
【実施例】本発明で使用する上部塗布ロールを図８に示
す。ステンレス製の円筒状ロールの表面を仕上度３度程
度に仕上げたものに、フッ素樹脂（商品名テフロン）シ
ートを貼付したものである。フッ素樹脂シートは、ガラ
ス繊維織布にフッ素樹脂を含浸し、焼成したものを片面
に表面処理を施し、シリコーン系感圧粘着剤を均一に塗
布・焼付けた粘着テープであり、非粘着性、耐薬品性、
耐熱性、機械的特性に優れている。ステンレスロールに
上記シートの粘着剤を塗布した面を接着して塗布ロール
を完成させる。脱硝触媒には酸性を呈するものが多く使
用されるので、耐薬品性を有するシートを接着した本発
明の塗布ロールは好適である。FIG. 8 shows an upper coating roll used in the present invention. It is obtained by applying a fluororesin (trade name: Teflon) sheet to a stainless steel cylindrical roll whose surface is finished to a finish degree of about 3 degrees. Fluororesin sheet is an adhesive tape made by impregnating a woven glass fiber fabric with a fluororesin, baking it, applying a surface treatment to one side, and uniformly applying and baking a silicone pressure-sensitive adhesive. Chemical properties,
Excellent heat resistance and mechanical properties. The application roll is completed by bonding the surface of the sheet on which the adhesive has been applied to the stainless steel roll. Since many acidic denitration catalysts are used, the coating roll of the present invention to which a sheet having chemical resistance is adhered is preferable.
【００１１】本発明で使用する塗布ロールを用いて触媒
ペーストを耐熱繊維織布よりなる基板に塗布する際、下
部に介したシートおよび上部の塗布ロールに貼ったテフ
ロンシートに耐熱繊維織布が最初に接触し、つぎに織布
の繊維と繊維の間から押出された触媒ペーストがシート
およびテフロンシートに接触する。このためペーストの
粘着性が高くてもシートと触媒とのはがれ、テフロンシ
ートと触媒とのはがれがきれいで塗布直後、簡単にはが
すことができ作業性の向上に貢献する。シートまたはテ
フロンシートへの触媒ペーストの付着部分が制限されて
いる分だけ板状触媒表面部に基板を構成する無機繊維が
露出している構成となる。下ロールを上ロールと同様に
テフロンシートを貼った構造とすると塗布時テフロンシ
ート表面と織布の表面との間で滑りを生じ、塗布不可能
となる現象を生ずる。When the catalyst paste is applied to a substrate made of a heat-resistant fiber woven fabric using the application roll used in the present invention, the heat-resistant fiber woven fabric is first applied to a sheet placed under the lower portion and a Teflon sheet stuck to the upper application roll. Then, the catalyst paste extruded from between the fibers of the woven fabric comes into contact with the sheet and the Teflon sheet. For this reason, even if the paste has high adhesiveness, the sheet and the catalyst are peeled off, and the Teflon sheet and the catalyst are peeled cleanly and can be easily peeled off immediately after application, contributing to an improvement in workability. The structure is such that the inorganic fibers constituting the substrate are exposed on the surface of the plate-shaped catalyst by an amount corresponding to the limited portion of the catalyst paste adhering to the sheet or the Teflon sheet. If the lower roll has a structure in which a Teflon sheet is stuck in the same manner as the upper roll, slippage occurs between the surface of the Teflon sheet and the surface of the woven fabric at the time of application, which causes a phenomenon that the application becomes impossible.
【００１２】本構成の下部の付着防止シートは織布を引
っ張りながらスムーズに一対のロールから引き出す効果
を有しており、上側テフロンロール、下側付着防止シー
トという本発明の構成が最もよいことが判明している。
本発明になる脱硝触媒の製造方法においては、ガラス繊
維、セラミック繊維等の無機繊維紡糸を織って網状物ま
たは織布としたものを触媒組成物担持用の基板として使
用する。図１に本発明により塗布する状況の模式図、図
２に斜視図を示す。２、２′は上、下の耐熱繊維織布で
ある。上下塗布ロール４、４′は矢印の方向へ回転し、
耐熱繊維織布は繰り出され、触媒ペースト１は耐熱繊維
織布２′の上に配置される。下側の耐熱繊維織布の下側
には、付着防止用シート３′が配置され一対のロールの
間に送給される。下塗布ロール４′は、下側のシート
３′で保護され、上塗布ロール４はテフロンシート９で
被覆されている。下側のシート３′の上に、下側の耐熱
繊維織布、その上に触媒ペースト１、その上に上側の耐
熱繊維織布を配して、テフロンシート９を貼った上塗布
ロール４とステンレス製の下塗布ロール４′の一対のロ
ールの間で塗布、圧着、矢印の方向へ回転、連続塗布す
る板状触媒の製造方法である。The lower anti-adhesion sheet of the present construction has an effect of smoothly pulling out the woven fabric from the pair of rolls while pulling the woven fabric. It is known.
In the method for producing a denitration catalyst according to the present invention, a mesh or woven fabric obtained by weaving inorganic fiber spun such as glass fiber or ceramic fiber is used as a substrate for supporting the catalyst composition. FIG. 1 is a schematic view showing the situation of application according to the present invention, and FIG. 2 is a perspective view. 2, 2 'are upper and lower heat-resistant fiber woven fabrics. The upper and lower application rolls 4, 4 'rotate in the direction of the arrow,
The heat-resistant fiber woven fabric is unwound, and the catalyst paste 1 is placed on the heat-resistant fiber woven fabric 2 '. An adhesion preventing sheet 3 'is arranged below the lower heat-resistant fiber woven fabric and fed between a pair of rolls. The lower coating roll 4 ′ is protected by a lower sheet 3 ′, and the upper coating roll 4 is covered with a Teflon sheet 9. On the lower sheet 3 ', a lower heat-resistant fiber woven fabric, a catalyst paste 1 thereon, and an upper heat-resistant fiber woven fabric thereon, and an upper application roll 4 on which a Teflon sheet 9 is stuck. This is a method for producing a plate-shaped catalyst in which coating, pressure bonding, rotation in the direction of the arrow, and continuous coating are performed between a pair of stainless steel lower coating rolls 4 '.
【００１３】板状触媒はこの塗布ロールにより塗布した
後に所定寸法に切断、成形されて乾燥後、４００〜６０
０℃で１〜２Ｈｒの焼成を受けて板状触媒となる。チタ
ン酸化物、モリブデン酸化物、バナジウム酸化物をチタ
ン、モリブデン、バナジウムの割合が、原子比で９２：
５：３となるように調整したものにアルミナシリケート
繊維バルクを重量比で１５％加え、水を加えて混練、調
整したペーストを本発明の製造方法にて耐熱繊維織布基
板に塗布して乾燥後、５５０℃で２時間焼成して脱硝触
媒を製造した。得られた板状触媒の窒素酸化物除去率
（記号Ｂ）の測定結果を図９に示す。脱硝率は３００
℃、３５０℃、４００℃で測定した。また参考として本
触媒の引張強度、曲げ強度、細孔容積、比表面積を図１
０に示す。また、比較例として図５、図６に示す塗布方
法すなわち特開平３−９４８３９号公報に開示された方
法で製作した板状触媒の脱硝率の結果（記号Ａ）を図９
に併記した。脱硝率を測定した時のガス組成は、ＮＯ；
２００ＰＰＭ、ＳＯ 2 ；５００ＰＰＭ、Ｏ2 ；３％、Ｎ
Ｈ3 ；２４０ＰＰＭ、ＣＯ2 ；１２％、Ｈ2 Ｏ；１２
％、ＡＶ；５１である。[0013] The plate-like catalyst was applied by this application roll.
After cutting to a predetermined size, forming and drying, 400 to 60
After being calcined at 0 ° C. for 1 to 2 hours, it becomes a plate catalyst. Chita
Oxide, molybdenum oxide, and vanadium oxide
, Molybdenum, and vanadium have an atomic ratio of 92:
Alumina silicate on the one adjusted to 5: 3
Add 15% by weight of fiber bulk, add water, knead and adjust
The prepared paste is heat-resistant fiber woven fabric based on the production method of the present invention.
Apply to plate, dry and bake at 550 ° C for 2 hours to remove NOx
A medium was produced. Nitrogen oxide removal rate of the obtained plate catalyst
The measurement result of (symbol B) is shown in FIG. DeNOx rate is 300
It measured at 350 degreeC, 400 degreeC. Also book for reference
Fig. 1 shows the tensile strength, bending strength, pore volume and specific surface area of the catalyst.
0 is shown. As a comparative example, the application method shown in FIGS.
The method disclosed in JP-A-3-94839.
FIG. 9 shows the results (symbol A) of the denitration rate of the plate-shaped catalyst manufactured by the method of FIG.
It was also described in. The gas composition when the denitration rate was measured was NO;
200PPM, SO Two; 500PPM, OTwo3%, N
HThree240 PPM, COTwo; 12%, HTwoO; 12
%, AV; 51.
【００１４】[0014]
【発明の効果】本発明によれば上側の付着防止シートが
不要となるため、シートの繰出装置、巻き取り装置がな
くなり塗布装置が単純となり、また使用済み付着防止シ
ートの処分が従来の半分ですみ、経費の低減はもちろ
ん、産廃の量が半分となる効果がある。According to the present invention, since the upper anti-adhesion sheet is not required, there is no need for a sheet feeding device and a winding device, so that the application device is simplified, and the disposal of the used anti-adhesion sheet is half of the conventional one. This has the effect of reducing costs and of halving the amount of industrial waste.
【図１】、FIG.
【図２】図１および図２は、本発明になる板状触媒の製
造装置の模式図および説明図である。FIGS. 1 and 2 are a schematic diagram and an explanatory diagram of an apparatus for producing a plate catalyst according to the present invention.
【図３】、FIG.
【図４】図３および図４は、ステンレス製のエキスパン
ドメタル基板に触媒を塗布する従来技術の説明図であ
る。FIGS. 3 and 4 are explanatory views of a conventional technique for applying a catalyst to an expanded metal substrate made of stainless steel.
【図５】、FIG.
【図６】図５および図６は、無機繊維織布に触媒を塗布
する従来技術の説明図である。FIGS. 5 and 6 are explanatory views of a conventional technique for applying a catalyst to a woven inorganic fiber fabric.
【図７】図７は、無機繊維織布への触媒塗布量の多少に
よる板状触媒の表面状態を示す図である。FIG. 7 is a diagram showing a surface state of a plate-like catalyst depending on the amount of a catalyst applied to an inorganic fiber woven fabric.
【図８】図８は、本発明で使用する上部塗布ロールの説
明図である。FIG. 8 is an explanatory diagram of an upper application roll used in the present invention.
【図９】図９は、実施例および比較例で得られた脱硝触
媒の脱硝率を比較して示す図である。FIG. 9 is a diagram showing a comparison between the denitration rates of the denitration catalysts obtained in Examples and Comparative Examples.
【図１０】図１０は、実施例および比較例で得られた脱
硝触媒の特性を比較して示す図である。FIG. 10 is a graph showing the characteristics of denitration catalysts obtained in Examples and Comparative Examples in comparison.
１…触媒ペースト、２、２′…上下耐熱繊維織布、３、
３′…上下シート、４、４′…上下塗布ロール、５、
５′…上下巻取りシート、６…板状触媒、７…エキスパ
ンドメタル、８…フッ素樹脂シート。1 ... catalyst paste, 2 '... upper and lower heat resistant fiber woven fabric, 3,
3 ': upper and lower sheets, 4, 4': upper and lower application rolls, 5,
5 ': Upper and lower winding sheets, 6: Plate catalyst, 7: Expanded metal, 8: Fluororesin sheet.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石田 信義 広島県豊田郡安芸津町風早3300番地 バ ブコック日立株式会社 安芸津分工場内 (72)発明者 植松 隆 広島県豊田郡安芸津町風早3300番地 バ ブコック日立株式会社 安芸津分工場内 (56)参考文献 特開 平１−258745（ＪＰ，Ａ) 特開 平２−174941（ＪＰ，Ａ) 特開 平３−65246（ＪＰ，Ａ) 特開 平２−307533（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B01J 21/00 - 38/74 B01D 53/86,53/94 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuyoshi Ishida 3300, Kazahaya, Akizu-cho, Toyota-gun, Hiroshima Prefecture Inside the Akitsu branch plant of Hitachi, Ltd. (56) References JP-A-1-258745 (JP, A) JP-A-2-174494 (JP, A) JP-A-3-65246 (JP, A) JP-A-2- 307533 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B01J 21/00-38/74 B01D 53 / 86,53 / 94
Claims (2)
布からなる基板と触媒ペーストよりなる素材を通過させ
て、基板に触媒ペーストを塗布する板状触媒の製造方法
において、上記ロールのうち一方はフッ素樹脂をコーテ
ィングしたロール、他方はフッ素樹脂をコーティングし
ないロールを用い、かつ、フッ素樹脂をコーティングし
ないロールと前記素材の間には付着防止用シートを介在
させ、フッ素樹脂コーティングロールと素材の間には付
着防止用シートを介在させないで、上記素材を上記ロー
ルの間を通過させて基板に触媒ペーストを塗布すること
を特徴とする板状触媒の製造方法。In a method for producing a plate-like catalyst, a substrate made of inorganic fiber woven fabric and a material made of a catalyst paste are passed between a pair of pressure application rolls to apply a catalyst paste to the substrate. One of the rolls is coated with a fluororesin, the other is a roll not coated with a fluororesin, and an anti-adhesion sheet is interposed between the roll not coated with the fluororesin and the material. A method for producing a plate-shaped catalyst, comprising applying a catalyst paste to a substrate by passing the material between the rolls without interposing an adhesion preventing sheet therebetween.
の間に無機繊維織布からなる基板と触媒ペーストよりな
る素材を供給する装置とを備えた板状触媒の製造装置に
おいて、フッ素樹脂コーティングロールと同樹脂コーテ
ィングなしのロールにて前記一対の加圧ロールを構成
し、かつ、前記素材供給装置をフッ素樹脂コーティング
なしのロールと前記素材との間にのみ付着防止用シート
を介在させてロール間を通過させる構成としたことを特
徴とする板状触媒の製造装置。2. An apparatus for producing a plate-shaped catalyst, comprising: a pair of pressure application rolls; and a device for supplying a substrate made of an inorganic fiber woven fabric and a material made of a catalyst paste between the two application rolls. The pair of pressure rolls are composed of a coating roll and a roll without the same resin coating, and the material supply device is provided with an adhesion preventing sheet only between the roll and the material without the fluororesin coating. An apparatus for producing a plate-shaped catalyst, wherein the apparatus is configured to pass between rolls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24614191A JP3270076B2 (en) | 1991-09-25 | 1991-09-25 | Method and apparatus for producing plate catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24614191A JP3270076B2 (en) | 1991-09-25 | 1991-09-25 | Method and apparatus for producing plate catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0576777A JPH0576777A (en) | 1993-03-30 |
| JP3270076B2 true JP3270076B2 (en) | 2002-04-02 |
Family
ID=17144096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24614191A Expired - Fee Related JP3270076B2 (en) | 1991-09-25 | 1991-09-25 | Method and apparatus for producing plate catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3270076B2 (en) |
-
1991
- 1991-09-25 JP JP24614191A patent/JP3270076B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0576777A (en) | 1993-03-30 |
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