JPS60175547A - Catalytic combustion device - Google Patents
Catalytic combustion deviceInfo
- Publication number
- JPS60175547A JPS60175547A JP59030816A JP3081684A JPS60175547A JP S60175547 A JPS60175547 A JP S60175547A JP 59030816 A JP59030816 A JP 59030816A JP 3081684 A JP3081684 A JP 3081684A JP S60175547 A JPS60175547 A JP S60175547A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- molded
- platinum group
- mat
- metal
- 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.)
- Pending
Links
- 238000007084 catalytic combustion reaction Methods 0.000 title abstract 2
- 239000003054 catalyst Substances 0.000 claims abstract description 33
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 6
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 6
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 239000003779 heat-resistant material Substances 0.000 claims abstract description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 5
- 150000003624 transition metals Chemical class 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 4
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000006260 foam Substances 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 4
- 230000003197 catalytic effect Effects 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 239000003513 alkali Substances 0.000 claims 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims 1
- 229910052863 mullite Inorganic materials 0.000 claims 1
- 229910052703 rhodium Inorganic materials 0.000 claims 1
- 239000010948 rhodium Substances 0.000 claims 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- -1 La or Cl Chemical class 0.000 abstract description 7
- 150000002910 rare earth metals Chemical class 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- 101100495270 Caenorhabditis elegans cdc-26 gene Proteins 0.000 description 5
- 230000010718 Oxidation Activity Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は天燃ガス、プロパンガス等の比較的軽質な炭化
水素ガスを触媒マット上で触媒燃焼させその時に発生す
る熱を家庭用あるいは小規模の工場等の暖房源として利
用する比較的小型の触媒燃焼器の触媒マットに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention catalytically combusts relatively light hydrocarbon gas such as natural gas or propane gas on a catalytic mat, and the heat generated at that time can be used for household or small-scale This invention relates to a catalyst mat for a relatively small catalytic combustor used as a heating source in factories and the like.
従来例の構成とその問題点
一般に炭化水素を空気の存在下、炭酸ガスと水蒸気に完
全酸化させる酸化触媒の活性については白金、パラジウ
ム等の白金族を担持したものが、最も活性が高いとされ
てきた。しかしながら白金族はコストが高い許シでなく
耐熱性にも問題がある。即ち５００℃以上の温度で使用
した場合、金属の粒子径が増大し、活性が劣化するとい
う問題があった０このため、助触媒の添加、担体の改良
等の工夫がなされてきたが、十分な効果を得ていない。Structures of conventional examples and their problems In general, it is said that the activity of oxidation catalysts that completely oxidize hydrocarbons into carbon dioxide gas and water vapor in the presence of air is highest in catalysts that support platinum group metals such as platinum and palladium. It's here. However, platinum group metals are expensive and have problems in heat resistance. In other words, when used at temperatures above 500°C, there is a problem that the metal particle size increases and the activity deteriorates.To solve this problem, efforts have been made to add co-catalysts and improve carriers, but these efforts have not been sufficient. I am not getting any good results.
発明の目的
本発明の目的は比較的コストの安い、金属酸化物を用い
て高活性でかつ耐熱性のある触媒マットを提供すること
にある。OBJECTS OF THE INVENTION It is an object of the present invention to provide a highly active and heat-resistant catalyst mat using metal oxides, which is relatively inexpensive.
発明の構成 この目的を達成するだめに本発明はアルミナ。Composition of the invention To achieve this objective, the present invention uses alumina.
コージライト等の無機耐熱材料を発泡セラミック体であ
るセラミックフオームあるいはハニカムに成形したもの
に、ランタン、セリウム等の希土類。Inorganic heat-resistant materials such as cordierite formed into ceramic foam or honeycomb, and rare earths such as lanthanum and cerium.
コバルト、ニッケル等の遷移金属あるいはもし、必要で
あれば、少量の白金族をペロプスカイト構造をもつ複合
金属酸化物に成形したものを担持し、触媒マットとする
構成を取った。この結果、従来の白金族系触媒マットに
比較するとコストも安く、活性も高く、さらに耐熱性も
高いという非常に優れた触媒マットを得た。A structure was adopted in which transition metals such as cobalt and nickel, or, if necessary, a small amount of platinum group metals, formed into a composite metal oxide having a perovskite structure were supported to form a catalyst mat. As a result, an extremely superior catalyst mat was obtained, which was lower in cost, higher in activity, and more heat resistant than conventional platinum group catalyst mats.
実施例の説明 以下本発明の一実施例を図面に基づき説明する。Description of examples An embodiment of the present invention will be described below based on the drawings.
第１図に示すごとく、本実施例の触媒燃焼器本体ケース
１の前面には金網２及び背面バネ／Ｌ／３に保持された
触媒マット４及び発泡金属板５がある。As shown in FIG. 1, on the front side of the catalytic combustor body case 1 of this embodiment, there are a catalyst mat 4 and a foamed metal plate 5 held by a wire mesh 2 and a back spring /L/3.
さらに触媒マット４と発泡金属板５の間には加熱用ヒー
タ６が設置されている。触媒マット４は無機耐熱材料で
あるコージライトの発泡多孔体であるセラミックフオー
ムの上に、希土類であるランタン、セリウム及び遷移金
属であるコバ）Ｖ ）をペロプスカイト型の結晶構造を
持つ微粉末に作製したものをコロイダルアルミナと共に
付着、焼成したものである。次に背面バネ／Ｉ／３は混
合器７と繋がっておシ、混合器７は送風用の空気ファン
８及びガスコック（９）を開閉することによシ制御され
るガスを送るガス供給管１０と繋がれている。Furthermore, a heater 6 is installed between the catalyst mat 4 and the foamed metal plate 5. Catalyst mat 4 is a ceramic foam made of cordierite, an inorganic heat-resistant material, and is made of rare earth elements such as lanthanum and cerium, and transition metals such as cobalt V), which are made into fine powders with a perovskite crystal structure. The prepared material was attached with colloidal alumina and fired. Next, the rear spring /I/3 is connected to a mixer 7, which is connected to an air fan 8 for blowing air and a gas supply pipe 10 for sending gas that is controlled by opening and closing a gas cock (9). It is connected to
次にその作用について述べる。Next, we will discuss its effect.
予め加熱用ヒータ６で触媒マット４を４００−ｊ５ｏ。Heat the catalyst mat 4 in advance at 400-j5o using the heater 6.
°Ｃ迄予熱する。予熱が完了すると電磁弁（図示せず）
の作用によシ、ガス供給管１０を通ってきたガスと空気
ファン８から送られてきた所定量の空気は混合管７にお
いて混合された後、背面パネル３の内部に供給される。Preheat to °C. When preheating is completed, the solenoid valve (not shown)
As a result, the gas passing through the gas supply pipe 10 and a predetermined amount of air sent from the air fan 8 are mixed in the mixing pipe 7 and then supplied to the inside of the back panel 3.
供給された混合ガスは発泡金属板５によシ均一に拡散さ
れた後、予熱された触媒マット４を通過する。この時に
混合ガスは水蒸気と伏酸ガスに完全に酸化される。この
時に発生する熱を暖房用として利用する。The supplied mixed gas is uniformly diffused through the foamed metal plate 5 and then passes through the preheated catalyst mat 4. At this time, the mixed gas is completely oxidized to water vapor and forcic acid gas. The heat generated at this time is used for heating purposes.
発明の効果
従来の白金系触媒及び本発明に用いたペロプスカイト触
媒を用いて天然ガスの主成分であるメタンの反応温度に
対する酸化活性をそれぞれ第２図。Effects of the Invention FIG. 2 shows the oxidation activity of methane, which is the main component of natural gas, with respect to the reaction temperature using a conventional platinum-based catalyst and a perovskite catalyst used in the present invention.
第３図に示した。第２図において、Ａはフレッシュな触
媒であシ、＾はＡを８５０°Ｃで５時間空気中で焼成し
たものである。図から明らかなように活性は非常に低下
している。一方、第３図は本発明に用いたペロブスカイ
ト触媒のメタンの酸化活性を示したものである。図から
明らかなように８５０ ’Ｃで５時間空気中で焼成した
Ｂは第２図のフレッシュなＡの触媒と同程度の活性を示
している・さらにＢ″は９５０℃で５時間空気中で焼成
したものであるが、その活性は、殆ど低下していない。It is shown in Figure 3. In FIG. 2, A is a fresh catalyst, and A is a catalyst calcined in air at 850° C. for 5 hours. As is clear from the figure, the activity has decreased significantly. On the other hand, FIG. 3 shows the methane oxidation activity of the perovskite catalyst used in the present invention. As is clear from the figure, B'', which was calcined in air at 850'C for 5 hours, shows the same level of activity as the fresh catalyst A in Figure 2.Furthermore, B'' was calcined in air at 950'C for 5 hours. Although it has been fired, its activity has hardly decreased.
以上のように本発明によるペロプスカイト構造をもつ触
媒マットは、活性、耐熱性共に優れ、従来、白金系の触
媒マットでは使用不能だった高温においても十分使用可
能である。この結果、燃焼量の可変中の広い触媒燃焼器
を作成する′ことができた。As described above, the catalyst mat having a perovskite structure according to the present invention has excellent activity and heat resistance, and can be used satisfactorily even at high temperatures where conventional platinum-based catalyst mats could not be used. As a result, we were able to create a wide catalytic combustor with variable combustion amount.
さらにコストについても、従来の白金系触媒に比較する
と大幅に低下することができた。Furthermore, the cost was significantly reduced compared to conventional platinum-based catalysts.
第１図は本発明の一実施例による触媒燃焼器の一部断面
斜視図第２図は従来の白金系触媒マットを用いた時のメ
タンの酸化活性を示す図、第３図は本発明におけるペロ
プスカイト触媒を用いた時のメタンの酸化活性を示す図
である。
４・・・・・・酸化触媒マット、６・・・・・・加熱用
ヒータ、８・・・・・・空気ファン。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
（３）
第２Ｎ
温浸（゛す
Ｃ５３図
ｉ讃Ｌ７Ｊ！ （’Ｃ〕FIG. 1 is a partial cross-sectional perspective view of a catalytic combustor according to an embodiment of the present invention. FIG. 2 is a diagram showing methane oxidation activity when a conventional platinum-based catalyst mat is used. FIG. 3 is a diagram showing methane oxidation activity when a perovskite catalyst is used. 4...Oxidation catalyst mat, 6...Heating heater, 8...Air fan. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
(3) 2nd N Digestion (C53 Figure i San L7J! ('C)
Claims (1)
の無機耐熱材料を多孔質に成型した触媒担体の上に結晶
構造がベロプヌカイト構造をもつ複合金属酸化物を０，
１〜３０重量パーセント担持したものを触媒マットとし
て用いた触媒燃焼器（２）ベロプヌカイト構造Ａ１−エ
Ａ’、 Ｂ １− ｙＢ’ｙ０３のうちＡはランタン、
セリウム等の希土類元素。 にはランタン、セリウム等の希土類もしくはアルカリ王
族から選択された元素であり、Ｂはコバルト、ニッケル
等の遷移金属元素から、Ｂはコバルト、ニッケル等の遷
移金属もしくは、白金、ロジウム等の白金族から選択さ
れた元素であシ、χ。 ｙはそれぞれ０〜０．９の特定の数値を有する複合金属
酸化物を触媒として用いた特許請求の範囲第１項記載の
触媒燃焼器。 （３）触媒担体として断面がハニカム構造をもつものあ
るいは、発泡セラミックであるセラミックフオームを用
いた特許請求の範囲第１項記載の触媒燃焼器。[Scope of Claims] (1) A composite metal oxide having a belopnukite crystal structure is coated on a catalyst carrier made of a porous inorganic heat-resistant material such as alumina, cordierite, mullite, or silica.
Catalytic combustor using 1 to 30% by weight of supported material as catalyst mat (2) Veropnukite structure A1-air A', B1-yB'y03, A is lanthanum,
Rare earth elements such as cerium. is an element selected from rare earths such as lanthanum and cerium or from the alkali royal family, B is a transition metal element such as cobalt and nickel, B is a transition metal such as cobalt and nickel, or an element selected from a platinum group such as platinum and rhodium. selected elements, χ. 2. The catalytic combustor according to claim 1, wherein a composite metal oxide in which each y has a specific numerical value of 0 to 0.9 is used as a catalyst. (3) The catalytic combustor according to claim 1, wherein a catalyst carrier having a honeycomb structure in cross section or a ceramic foam made of foamed ceramic is used as the catalyst carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59030816A JPS60175547A (en) | 1984-02-21 | 1984-02-21 | Catalytic combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59030816A JPS60175547A (en) | 1984-02-21 | 1984-02-21 | Catalytic combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60175547A true JPS60175547A (en) | 1985-09-09 |
Family
ID=12314218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59030816A Pending JPS60175547A (en) | 1984-02-21 | 1984-02-21 | Catalytic combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60175547A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60235639A (en) * | 1984-05-07 | 1985-11-22 | Matsushita Electric Ind Co Ltd | Oxidation catalyst for catalytic combustion |
| JPS6111149A (en) * | 1984-06-28 | 1986-01-18 | Matsushita Electric Ind Co Ltd | Oxidizing catalyst |
| EP0468127A2 (en) * | 1990-07-26 | 1992-01-29 | Peking University | Perovskite-type rare earth complex oxide combustion catalysts |
| CN109382085A (en) * | 2018-11-13 | 2019-02-26 | 内蒙古科技大学 | Rare Earth Mine foamed ceramics catalyst and its preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4961727A (en) * | 1972-10-13 | 1974-06-14 | ||
| JPS5570326A (en) * | 1978-11-20 | 1980-05-27 | Matsushita Electric Ind Co Ltd | Catalyst with heater |
| JPS5728902A (en) * | 1980-07-25 | 1982-02-16 | Sanyo Electric Co Ltd | Catalytic combustion apparatus |
-
1984
- 1984-02-21 JP JP59030816A patent/JPS60175547A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4961727A (en) * | 1972-10-13 | 1974-06-14 | ||
| JPS5570326A (en) * | 1978-11-20 | 1980-05-27 | Matsushita Electric Ind Co Ltd | Catalyst with heater |
| JPS5728902A (en) * | 1980-07-25 | 1982-02-16 | Sanyo Electric Co Ltd | Catalytic combustion apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60235639A (en) * | 1984-05-07 | 1985-11-22 | Matsushita Electric Ind Co Ltd | Oxidation catalyst for catalytic combustion |
| JPS6111149A (en) * | 1984-06-28 | 1986-01-18 | Matsushita Electric Ind Co Ltd | Oxidizing catalyst |
| EP0468127A2 (en) * | 1990-07-26 | 1992-01-29 | Peking University | Perovskite-type rare earth complex oxide combustion catalysts |
| US5242881A (en) * | 1990-07-26 | 1993-09-07 | Peking University | Perovskite-type rare earth complex oxide combustion catalysts |
| US5443807A (en) * | 1990-07-26 | 1995-08-22 | Peking University | Conversion of carbon monoxide utilizing a perovskite-type rare earth complex oxide catalyst |
| CN109382085A (en) * | 2018-11-13 | 2019-02-26 | 内蒙古科技大学 | Rare Earth Mine foamed ceramics catalyst and its preparation method and application |
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