JP2643467B2 - Catalytic reactor - Google Patents
Catalytic reactorInfo
- Publication number
- JP2643467B2 JP2643467B2 JP1210924A JP21092489A JP2643467B2 JP 2643467 B2 JP2643467 B2 JP 2643467B2 JP 1210924 A JP1210924 A JP 1210924A JP 21092489 A JP21092489 A JP 21092489A JP 2643467 B2 JP2643467 B2 JP 2643467B2
- Authority
- JP
- Japan
- Prior art keywords
- microwave
- catalyst
- magnetron
- catalyst body
- microwave absorbing
- 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
Landscapes
- Control Of High-Frequency Heating Circuits (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Catalysts (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明はガス状物質を触媒反応により別のガス状物質
に転換する触媒反応装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a catalytic reactor for converting a gaseous substance into another gaseous substance by a catalytic reaction.
従来の技術 従来のこの種の触媒反応装置は第２図に示すように、
反応管１内に触媒２を配設し、外部熱源３により触媒体
２を一定温度に加熱し、ガス状物質４を別のガス状物質
５に転換するように構成されており、触媒体２の細孔６
の中をガス状物質４が通過する時、触媒反応が起こるよ
うになっていた。触媒体２は第２図ｂに示すようなハニ
カム状の断面構造をしており、細孔６の壁に触媒層８が
担持されている。2. Description of the Related Art As shown in FIG.
A catalyst 2 is provided in a reaction tube 1, and the catalyst 2 is heated to a constant temperature by an external heat source 3 to convert a gaseous substance 4 into another gaseous substance 5. Pores 6
When the gaseous substance 4 passes through the inside, a catalytic reaction has occurred. The catalyst body 2 has a honeycomb-shaped cross-sectional structure as shown in FIG. 2B, and a catalyst layer 8 is supported on the walls of the pores 6.
発明が解決しようとする課題 しかしながら上記のような構成では、触媒体を外部熱
源により加熱するためエネルギー損失が大きいという問
題点を有していた。Problems to be Solved by the Invention However, the above configuration has a problem that energy loss is large because the catalyst body is heated by the external heat source.
本発明はかかる従来の問題を解決するもので、エネル
ギー損失の少ない触媒反応装置を提供することを目的と
する。The present invention solves such a conventional problem, and an object of the present invention is to provide a catalytic reaction device with less energy loss.
課題を解決するための手段 上記課題点を解決するために本発明の触媒反応装置
は、アルミナ、ムライト、コージェライトの群から選ば
れた非マイクロ波吸収材料からなるハニカム構造体の細
孔内壁に炭化けい素、酸化亜鉛、遷移金属酸化物の群か
ら選ばれたマイクロ波吸収層を設け、前記マイクロ波吸
収層の表面に触媒層を設けた触媒体を、マグネトロン、
１組の温度検出素子、マグネトロン出力制御回路を配設
したマイクロ波空洞共振器内に配設した構造を備えたも
のである。Means for Solving the Problems In order to solve the above-mentioned problems, the catalytic reactor of the present invention is provided on the inner wall of the pores of the honeycomb structure made of a non-microwave absorbing material selected from the group consisting of alumina, mullite and cordierite. Silicon carbide, zinc oxide, provided a microwave absorbing layer selected from the group of transition metal oxide, a catalyst body provided with a catalyst layer on the surface of the microwave absorbing layer, magnetron,
It has a structure in which a set of a temperature detecting element and a magnetron output control circuit are provided in a microwave cavity resonator.
作用 本発明は上記した構成によってマグネトロンで発生し
たマイクロ波はハニカム構造体のマイクロ波吸収層に吸
収され、触媒層温度を上昇させる。内部に触媒体を配設
したマイクロ波空洞共振器にはマグネトロン、１組の温
度検出素子とマグネトロン出力制御回路を連結配設する
ことにより、触媒体の温度を一定に保持する。すなわち
触媒体の入口と出口のガス温度を１組の温度検出素子に
より測定しながらマグネトロンおよびマグネトロン出力
制御回路を動作させて触媒体の温度を一定に保持するも
のである。According to the present invention, the microwave generated by the magnetron according to the above configuration is absorbed by the microwave absorbing layer of the honeycomb structure, and the temperature of the catalyst layer is increased. The temperature of the catalyst body is kept constant by connecting a magnetron, a set of temperature detecting elements and a magnetron output control circuit to the microwave cavity having a catalyst body disposed therein. That is, the magnetron and the magnetron output control circuit are operated while the gas temperatures at the inlet and outlet of the catalyst body are measured by a set of temperature detecting elements, and the temperature of the catalyst body is kept constant.
実施例 以下、本発明の実施例を添付図面にもとづいて説明す
る。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
第１図ａにおいて９は内径41mm、外径43mm、長さ120m
mのステンレス製マイクロ波空洞共振器であり、その内
部に触媒体10、前記触媒体の前後にマイクロ波遮蔽用金
網11、前記金網の外側に温度検出素子12を配設し、空洞
共振器９に接してマグネトロン13、前記マグネトロンに
接続してマグネトロン出力制御回路14を配設し、同回路
はは温度検出素子12と接続されている。前記触媒体10の
断面は第２図ｂに示すようにムライトからなる非マイク
ロ波吸収材料で構成した直径40mm、長さ80mm、90セル/i
n2のハニカム構造体15の細孔15aの内壁に酸化亜鉛ウイ
スカーからなるマイクロ波吸収層16を設け、その表面に
酸化セリウム触媒層17が設けられている。酸化セリウム
は150℃以上になると一酸化炭素を酸化して炭酸ガスに
転換する触媒作用を示す。前記触媒体をマイクロ波で15
0℃に加熱するためには100Wの高周波出力でよく、立上
り時間も５秒であった。本触媒反応装置に一酸化炭素濃
度１％の空気バランスガス４を空間速度5000h-1で流す
と出口からは一酸化炭素を含まない反応ガス５が排出し
た。比較のため第２図に示す外部加熱式の従来装置で本
実施例と同じ立上り時間、同じ保持温度とするために
は、初期の３秒間は1KW、その後は400Wの電力が必要で
あった。In FIG. 1a, 9 is an inner diameter of 41 mm, an outer diameter of 43 mm, and a length of 120 m.
m, a microwave cavity resonator made of stainless steel, inside which a catalyst body 10, a wire netting 11 for microwave shielding before and after the catalyst body, and a temperature detecting element 12 outside the wire mesh are provided. And a magnetron output control circuit 14 connected to the magnetron. The circuit is connected to the temperature detecting element 12. As shown in FIG. 2b, the cross section of the catalyst body 10 was composed of a non-microwave absorbing material made of mullite, having a diameter of 40 mm, a length of 80 mm, and 90 cells / i.
The microwave absorbing layer 16 made from the inner wall to the zinc oxide whiskers of the pores 15a of the honeycomb structure 15 of n 2 is provided, cerium oxide catalyst layer 17 is provided on the surface thereof. Cerium oxide has a catalytic action of oxidizing carbon monoxide and converting it to carbon dioxide gas at 150 ° C. or higher. The catalyst is microwaved to 15
In order to heat to 0 ° C., a high-frequency output of 100 W was sufficient, and the rise time was 5 seconds. When an air balance gas 4 having a carbon monoxide concentration of 1% was passed through the catalytic reactor at a space velocity of 5000 h -1 , a reaction gas 5 containing no carbon monoxide was discharged from the outlet. For comparison, in order to obtain the same rise time and the same holding temperature as those of the present embodiment in the conventional apparatus of the external heating type shown in FIG. 2, 1 KW was required for the first three seconds and 400 W thereafter.
次に本発明の他の実施例を第１図を用いて説明する。
前記実施例と相異する点はムライトハニカムの代わりに
アルミナハニカム、酸化亜鉛ウイスカー、マイクロ波吸
収層の代わりに炭素けい素からなるマイクロは波吸収層
を設け、その表面に酸化セリウム、酸化マンガン、酸化
銅からなる複合ペロブスカイト構造触媒層を設けた点で
ある。前記触媒は200℃以上になるとプロピレンなどの
炭化水素を酸化して炭酸ガスと水に転換する触媒作用を
示す。Next, another embodiment of the present invention will be described with reference to FIG.
The difference from the above embodiment is that instead of the mullite honeycomb, an alumina honeycomb, a zinc oxide whisker, a microwave made of carbon silicon instead of a microwave absorption layer is provided with a wave absorption layer, and cerium oxide, manganese oxide, The point is that a catalyst layer having a composite perovskite structure made of copper oxide is provided. The catalyst has a catalytic action of oxidizing hydrocarbons such as propylene at a temperature of 200 ° C. or higher and converting the hydrocarbons into carbon dioxide and water.
前記触媒体をマイクロ波で200℃に加熱するためには1
50Wの高周波出力でよく、立上り時間も７秒であった。
本触媒反応装置にプロピレン濃度１％の空気バランスガ
スを空間速度5000h-1で流すと出口からはプロピレンを
含まない反応ガスが排出した。比較のため第２図に示す
外部加熱式の従来装置で本実施例と同じ立上り時間、同
じ保持温度とするためには、初期の５秒間は1.5KW、そ
の後は700Wの電力が必要であった。To heat the catalyst body to 200 ° C by microwave, 1
A high-frequency output of 50 W was sufficient, and the rise time was 7 seconds.
When an air balance gas having a propylene concentration of 1% was passed through the present catalytic reactor at a space velocity of 5000 h -1 , a reaction gas containing no propylene was discharged from the outlet. For comparison, in order to obtain the same rise time and the same holding temperature as the present embodiment in the conventional external heating type apparatus shown in FIG. 2, 1.5 KW for the first 5 seconds and 700 W thereafter were required. .
発明の効果 以上のように本発明の触媒反応装置によれば次の効果
が得られる。Effects of the Invention As described above, according to the catalytic reaction device of the present invention, the following effects can be obtained.
（１） 非マイクロ波吸収材料からなるハニカム構造体
の細孔内壁にマイクロ波吸収層を設けた構成としている
ので従来と比較すると低エネルギーで短時間に昇温でき
る触媒反応装置ができるという効果がある。(1) Since a honeycomb structure made of a non-microwave absorbing material has a structure in which a microwave absorbing layer is provided on the inner wall of the pores, a catalytic reaction device capable of raising the temperature in a short time with lower energy as compared with the related art can be obtained. is there.
（２） マイクロ波空洞共振器内に１組の温度検出素子
を配設し、前記素子に連結してマグネトロン出力制御回
路、前記回路にマグネトロンを連結して配設する構成と
しているので、入口ガス温度と出口ガス温度の差より化
学反応速度（従って触媒体温度）の制御ができるという
効果がある。(2) A set of temperature detecting elements is provided in the microwave cavity resonator, and a magnetron output control circuit is connected to the element, and a magnetron is connected to the circuit and provided. There is an effect that the chemical reaction rate (accordingly, the temperature of the catalyst body) can be controlled based on the difference between the temperature and the outlet gas temperature.
第１図ａおよびｂは本発明の実施例における触媒反応装
置および触媒体の各断面図、第２図ａおよびｂは従来の
触媒反応装置および触媒体の各断面図である。 ９……マイクロ波空洞共振器、10……触媒体、11……温
度検出素子、12……マイクロ波遮蔽用金網、13……マグ
ネトロン、14……マイクロ波出力制御回路、15……非マ
イクロ波吸収ハニカム構造体、16……マイクロ波吸収
層、17……触媒層。FIGS. 1a and 1b are sectional views of a catalytic reactor and a catalyst body according to an embodiment of the present invention, and FIGS. 2a and 2b are sectional views of a conventional catalytic reactor and a catalyst body. 9: microwave cavity resonator, 10: catalyst body, 11: temperature detecting element, 12: wire netting for microwave shielding, 13: magnetron, 14: microwave output control circuit, 15: non-micro Wave absorbing honeycomb structure, 16: microwave absorbing layer, 17: catalyst layer.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松本 郁夫 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭50−18374（ＪＰ，Ａ) ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ikuo Matsumoto 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-50-18374 (JP, A)
Claims (1)
から選ばれた非マイクロ波吸収材料からなるハニカム構
造体の細孔内壁に炭化けい素、酸化亜鉛、遷移金属酸化
物の群から選ばれたマイクロ波吸収層を設け、前記マイ
クロ波吸収層表面に触媒層を設けた触媒体を、内部に１
組のマイクロ波遮断用金網および前記金網の外側に１組
の温度検出素子、外部にマグネトロンおよびマイクロ波
出力制御回路を配設したマイクロ波空洞共振器内に配設
した触媒反応装置。1. A honeycomb structure made of a non-microwave absorbing material selected from the group consisting of alumina, mullite, and cordierite has a microstructure selected from the group consisting of silicon carbide, zinc oxide, and transition metal oxide on the inner wall of pores of a honeycomb structure. A catalyst body provided with a microwave absorbing layer and a catalyst layer provided on the surface of the microwave absorbing layer,
A catalytic reaction device disposed in a microwave cavity having a set of microwave shielding wire netting, a set of temperature detecting elements outside the wire netting, and a magnetron and a microwave output control circuit outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1210924A JP2643467B2 (en) | 1989-08-16 | 1989-08-16 | Catalytic reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1210924A JP2643467B2 (en) | 1989-08-16 | 1989-08-16 | Catalytic reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374082A JPH0374082A (en) | 1991-03-28 |
| JP2643467B2 true JP2643467B2 (en) | 1997-08-20 |
Family
ID=16597332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1210924A Expired - Fee Related JP2643467B2 (en) | 1989-08-16 | 1989-08-16 | Catalytic reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2643467B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210220839A1 (en) * | 2018-10-26 | 2021-07-22 | Fuji Electric Co., Ltd. | Electric dust collector |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009110245A1 (en) * | 2008-03-05 | 2009-09-11 | マイクロ波環境化学株式会社 | Microwave chemical reaction device and reaction method using said device |
| JP2013043456A (en) * | 2011-08-22 | 2013-03-04 | Takumi:Kk | Heating unit of heating device for vehicle |
| WO2014136456A1 (en) * | 2013-03-07 | 2014-09-12 | 国立大学法人東京工業大学 | Complex-heating method and device, catalytic reaction device, catalytic unit, and manufacturing method therefor |
| KR101707043B1 (en) * | 2016-06-24 | 2017-02-16 | 이정식 | Soft-boiled roaster using perforated drum |
-
1989
- 1989-08-16 JP JP1210924A patent/JP2643467B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210220839A1 (en) * | 2018-10-26 | 2021-07-22 | Fuji Electric Co., Ltd. | Electric dust collector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0374082A (en) | 1991-03-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |