JPS6014939A - Combustion catalyst for gas turbine - Google Patents
Combustion catalyst for gas turbineInfo
- Publication number
- JPS6014939A JPS6014939A JP58121038A JP12103883A JPS6014939A JP S6014939 A JPS6014939 A JP S6014939A JP 58121038 A JP58121038 A JP 58121038A JP 12103883 A JP12103883 A JP 12103883A JP S6014939 A JPS6014939 A JP S6014939A
- Authority
- JP
- Japan
- Prior art keywords
- carrier layer
- catalyst
- combustion
- carrier
- alumina
- 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.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title claims description 53
- 238000002485 combustion reaction Methods 0.000 title claims description 24
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 14
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 7
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052705 radium Inorganic materials 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 17
- 239000000203 mixture Substances 0.000 abstract description 11
- 229910052763 palladium Inorganic materials 0.000 abstract description 11
- 239000002002 slurry Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 6
- 150000003839 salts Chemical class 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 3
- 238000005245 sintering Methods 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 30
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 23
- 239000007789 gas Substances 0.000 description 21
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 229910000510 noble metal Inorganic materials 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 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 description 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 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、ガスタービン用燃焼触媒に関し、更に詳しく
は、約３００〜１５００℃の温度範囲において、高活性
を有するガスタービン用燃焼触媒に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a combustion catalyst for a gas turbine, and more particularly to a combustion catalyst for a gas turbine that has high activity in a temperature range of about 300 to 1500°C.
近年、石油資源等の枯渇化に伴い、エネルギー資源を効
率的に使用するため、例えば、ガスタービン等において
は、できるだけ高温において燃料を燃焼させることが望
まれている。In recent years, with the depletion of petroleum resources and the like, in order to use energy resources efficiently, for example, in gas turbines and the like, it is desired to burn fuel at as high a temperature as possible.
しかしながら、従来の燃焼方法は、燃料と空気の混合物
を、ス／ｅ−クプラグ等を用いて着火して、気相燃焼せ
しめる方法であるため、燃焼器内には部分的に２０００
℃を超える高温部が存在することになる。そして、この
場合、高温部において、窒素酸化物（ＮＯ！ ”）が多
量に生成し、環境汚染等の問題を生ずることが知られて
いる。However, in the conventional combustion method, a mixture of fuel and air is ignited using a spark plug or the like to cause gas phase combustion.
There will be a high temperature area exceeding ℃. In this case, it is known that a large amount of nitrogen oxides (NO!'') are generated in the high temperature section, causing problems such as environmental pollution.
このような問題を解消するために、触媒を用いて燃料と
空気の混合物を燃焼せしめる触媒燃焼方式が提案されて
いる。この燃焼方式によれば、均一な燃焼が可能となシ
、且つ、ＮＯｘが生成しない上限温度である１５００℃
程度まで、燃焼温度を高めることができる。In order to solve these problems, a catalytic combustion method has been proposed in which a mixture of fuel and air is combusted using a catalyst. According to this combustion method, uniform combustion is possible and the upper limit temperature at which no NOx is generated is 1500°C.
The combustion temperature can be increased to a certain degree.
この触媒燃焼方式をガスタービンに適用する場合、用い
る燃焼触媒には相反する２つの特性が要求される。すな
わち、低温着火性と耐熱性である。When this catalytic combustion method is applied to a gas turbine, the combustion catalyst used is required to have two contradictory characteristics. That is, low-temperature ignitability and heat resistance.
現在実用されているガスタービンにおいて、燃焼用空気
は３００℃程度に予熱された後、圧縮送風機で燃焼器に
導入されている。そして、火炎燃焼した混合気は１２０
０℃程度に冷却された後タービン内へ送入される。従っ
て、ガスタービン燃焼器内に燃焼用触媒充填部を設置し
た場合、該燃焼触媒には３００℃程度の温度で燃料用ガ
スを着火させると共に、燃焼ガスによる１２００℃程度
の温度に耐えることが要求されることになる。In gas turbines currently in use, combustion air is preheated to about 300° C. and then introduced into the combustor using a compressor blower. And the mixture that burns in flame is 120
After being cooled to about 0°C, it is sent into the turbine. Therefore, when a combustion catalyst filling part is installed in a gas turbine combustor, the combustion catalyst is required to ignite the fuel gas at a temperature of about 300°C and to withstand a temperature of about 1200°C caused by the combustion gas. will be done.
このようなガスタービン用燃焼触媒としては、第１図に
例示したような構造の貴金属系触媒が知られている。す
なわち、一定の機械的強度を有するα−アルミナのよう
な耐熱性担体１の表面にγ−アルミナのような活性担体
の多孔質層２を設け、該担体層２の表面に各種の貴金属
の粒子３を１種又は２種以上浸漬法などによって付着・
担持せしめたものである。この場合、担体層２を設ける
に当シ、その材料に貴金属の触媒源を混合しこの混合物
で耐熱性担体１の表面を被覆してもよい。いずれにして
も、触媒能を有する貴金属は担体層２の表面に均一に担
持されるか又は一部を表面に露出した状態で担体層２に
均一に分散している。As such a combustion catalyst for a gas turbine, a noble metal catalyst having a structure as illustrated in FIG. 1 is known. That is, a porous layer 2 of an active carrier such as γ-alumina is provided on the surface of a heat-resistant carrier 1 such as α-alumina having a certain mechanical strength, and particles of various noble metals are provided on the surface of the carrier layer 2. 3 by one or more types of immersion method etc.
This is what I was made to carry. In this case, when providing the carrier layer 2, a noble metal catalyst source may be mixed with the material and the surface of the heat-resistant carrier 1 may be coated with this mixture. In any case, the noble metal having catalytic ability is uniformly supported on the surface of the carrier layer 2 or is uniformly dispersed in the carrier layer 2 with a portion thereof exposed on the surface.
とくに、この種の触媒においては、貴金属として白金（
ｐｔ）ｔノ＋ラジウム（ｐａ ）又はそれらの合金が多
用されている。とくにｐｔとＰｄを同時に混在した状態
で担持する触媒が知られている。In particular, this type of catalyst uses platinum (
pt) and radium (pa) or alloys thereof are frequently used. In particular, catalysts that support pt and Pd in a mixed state are known.
しかしながら、ＰｔとＰｄを混在して担持する触媒には
次のような問題がある。すなわち、低温から高温に至る
温度域全般に亘って高活性を示さないということである
。However, catalysts that support a mixture of Pt and Pd have the following problems. That is, it does not exhibit high activity over the entire temperature range from low to high temperatures.
したがって、このような触媒は、３００℃〜１５００℃
という広範囲な温度域においても高活性を必要とするよ
うなガスタービン用の燃焼触媒として必ずしも有効なも
のではない。Therefore, such a catalyst is suitable for temperatures between 300°C and 1500°C.
It is not necessarily effective as a combustion catalyst for gas turbines that require high activity even in such a wide temperature range.
本発明は、上記したような従来のガスタービン用燃焼触
媒における欠点を解消し、低温での着火性に優れ、３０
０〜１５００℃の温度域にあっても高活性テある新規な
構造のガスタービン用燃焼触媒の提供を目的とする。The present invention eliminates the drawbacks of conventional combustion catalysts for gas turbines as described above, has excellent ignition performance at low temperatures, and has a
An object of the present invention is to provide a combustion catalyst for a gas turbine having a novel structure that has high activity even in a temperature range of 0 to 1500°C.
本発明者らは、Ｐｔ 、 Ｐｄを担持する触媒における
上記した問題点を解決すべく鋭意研究を重ねた結果、天
然ガスを燃料にした場合、Ｐｄは６００℃以下の低温域
では優れた活性を示し、Ｐｔは６００℃以上の高温域で
は優れた活性を示すという事実を見出し、また、活性担
体層にｐｔとＰｄが混在する場合には、両者は相互に近
接して位置するので使用中に触媒中のｐｔとＰｄがそれ
ぞれ熱移動し遂にはＰｄよシ低温における活性の低いｐ
ｔ ／ｐａの合金を形成してしまうという事実を見出し
た。これらの事実から、活性担体層におけるｐｔとＰｄ
の存在形態を、混在した状態ではなく相互に隔離しあっ
た状態で存在させれば、使用中の合金化は起らず、それ
ぞれの活性が有効に利用できるとの着想を得、本発明の
ガスタービン用燃焼触媒を開発するに到った。The present inventors have conducted extensive research to solve the above-mentioned problems with catalysts supporting Pt and Pd, and have found that when natural gas is used as fuel, Pd has excellent activity at low temperatures below 600°C. They found that Pt exhibits excellent activity in the high temperature range of 600°C or higher, and also found that when Pt and Pd are mixed in the active carrier layer, they are located close to each other, so it is difficult to use during use. Pt and Pd in the catalyst transfer heat, and eventually Pd has lower activity at low temperatures than Pd.
It has been discovered that an alloy of t/pa is formed. From these facts, it is clear that pt and Pd in the active carrier layer
The present invention was developed based on the idea that if the forms of existence of the We have developed a combustion catalyst for gas turbines.
すなわち、本発明のガスタービン用燃焼触媒は、耐熱性
担体と、該担体の表面を被覆して形成される活性担体層
と、該担体層内又は表面に分散して担持される白金及び
・やラジウムの粒子とから成るガスタービン用燃焼触媒
において、該白金及びノ９ラジウムの粒子が、該担体層
内又は表面に混在して分散するのではなく、それぞれ別
個に層を成して存在していることを特徴とする。That is, the combustion catalyst for gas turbines of the present invention includes a heat-resistant carrier, an active carrier layer formed by coating the surface of the carrier, and platinum and/or etc. dispersed and supported within or on the carrier layer. In a gas turbine combustion catalyst consisting of radium particles, the platinum and radium particles are not mixed and dispersed in or on the carrier layer, but are present in separate layers. It is characterized by the presence of
本発明の触媒の１例を第２図に示す。図で１は耐熱性担
体である。本発明において使用される耐熱性担体は、１
５００℃程度の高温酸化性雰囲気中においても安定な性
質を有するものであればいかなるものでもよく、これら
の具体例としては、コージライト、ムライト、α−アル
ミナ、ジルコニアスピネル、チタニア等のセラミック製
担体等が挙げられる。担体の形状は、通常、触媒体とし
て使用されている形状であれば特（制限はなく、例えば
、ペレット状、）・ニカム状尋が挙げられる。An example of the catalyst of the present invention is shown in FIG. In the figure, 1 is a heat-resistant carrier. The heat-resistant carrier used in the present invention is 1
Any material may be used as long as it has stable properties even in a high-temperature oxidizing atmosphere of about 500°C, and specific examples thereof include ceramic supports such as cordierite, mullite, α-alumina, zirconia spinel, and titania. etc. The shape of the carrier is not particularly limited as long as it is in a shape normally used as a catalyst, such as pellets, nicum-like, etc.
２は、耐熱性担体１の表面を被覆して形成される活性担
体の層で、γ−アルミナ、α−アルミナ。2 is an active carrier layer formed by coating the surface of the heat-resistant carrier 1, which is γ-alumina and α-alumina.
ジルコニアなどの多孔質セラミックス又はこれに各種の
希土類を含有せしめて成る層であシ、本発明にあっては
特別に限定されるものではない。The present invention is not particularly limited to a layer made of porous ceramics such as zirconia or a layer made of porous ceramics containing various rare earth elements.
４．５はそれぞれＰｄ 、 Ｐｔの粒子である。本発明
にあっては、Ｐｄ ｌ Ｐｔが担体層２の表面に混在し
て存在するのではなく、各金属が担体ｌの表面垂直方向
にある間隔をおいていわば触媒表面に広がる層状に別々
に存在することを最大の特徴とする。4.5 are Pd and Pt particles, respectively. In the present invention, Pd l Pt is not present in a mixed manner on the surface of the carrier layer 2, but each metal is separately present in a layer-like manner spread over the catalyst surface at certain intervals in the direction perpendicular to the surface of the carrier l. Its greatest feature is that it exists.
活性担体層２へのＰｄ 、 Ｐｔの担持は次のようにし
て行なうことができる。第１の方法。まず、アルミナゾ
ル又はγ−アルミナなどの担体層の材料とＰｄあるいは
ＰｄＯの微粉又はＰｄの塩の微粉を混合し、この混合物
のスラリーで担体１の表面を被覆した後、乾燥して焼成
する。担体層が形成されそこにはＰｄ ４が担持される
。このとき用いるＰｄの塩としては、塩化パラジウム、
Ｐｄ（、ｔ２（ＮＨ５）２ ｒ（ＮＨ４）２ＰｄＣｔ４
． Ｐｄ（ＯＨ）２などをあげることができる。Pd and Pt can be supported on the active carrier layer 2 as follows. First method. First, a carrier layer material such as alumina sol or γ-alumina is mixed with fine powder of Pd or PdO or fine powder of Pd salt, and the surface of the carrier 1 is coated with a slurry of this mixture, and then dried and fired. A carrier layer is formed on which Pd 4 is supported. The Pd salts used at this time include palladium chloride,
Pd(,t2(NH5)2 r(NH4)2PdCt4
．． Examples include Pd(OH)2.
次に、との担体層の上を、Ｐｔあるいはｐｔｏの微粉又
はその塩の微粉とアルミナゾル又はγ−アルミナなどの
担体層の材料から成る混合物スラリーで被覆した後乾燥
して焼成する。用いるｐｔの塩としては、ヘキサクロロ
白金酸、塩化白金、テトラクロロ白金酸などをあげるこ
とができる。Next, the carrier layer is coated with a slurry of a mixture consisting of a fine powder of Pt or pto, or a fine powder of its salt, and a carrier layer material such as alumina sol or γ-alumina, and then dried and fired. Examples of the pt salt used include hexachloroplatinic acid, platinum chloride, and tetrachloroplatinic acid.
このようにして、第２図のように担体層２の内側にはＰ
ｄが担持され、それからある間隔をおいて外側にはｐｔ
が担持されている担体層が構成される。In this way, as shown in FIG.
d is carried, and then, at a certain interval, pt is carried on the outside.
A carrier layer on which is carried is constituted.
第２の方法。担体１の表面に例えばアルミナゾル、γ−
アルミナのスラリーのみを用いて活性担体層２を形成す
る。つぎに、これを所定濃度の例えば塩化パラジウム溶
液に浸漬して活性担体層２の表面にＰｄを担持させる。Second method. For example, alumina sol, γ-
The active carrier layer 2 is formed using only an alumina slurry. Next, this is immersed in, for example, a palladium chloride solution of a predetermined concentration, so that Pd is supported on the surface of the active carrier layer 2.
その後、この上に上記と同様にして再び活性担体層を形
成し、それを例えばヘキサクロロ白金酸溶液に浸漬して
ｐｔを第２の活性担体層に担持させる。かくして、担体
、第１の活性担体層、 Ｐｄ０層、第２の活性担体層。Thereafter, an active carrier layer is again formed on this in the same manner as above, and it is immersed in, for example, a hexachloroplatinic acid solution to support pt on the second active carrier layer. Thus, the carrier, the first active carrier layer, the Pd0 layer, the second active carrier layer.
ｐｔｏ層がそれぞれ所定の間隔を置いて形成される。PTO layers are formed at predetermined intervals.
すなわち、この場合もＰｄ 、 Ｐｔは互いに近接する
ことなく存在することになる。この場合、活性担体層は
多孔質なので内側のＰｄにも燃料と空気の混合気は接触
することができる。That is, in this case as well, Pd and Pt exist without being close to each other. In this case, since the active carrier layer is porous, the mixture of fuel and air can also come into contact with the Pd inside.
なお、２つの方法において、活性担体層へのＰｄ 、
Ｐｔの存在順序を逆にしても何ら不都合を生しないこと
はいうまでもない。In addition, in the two methods, Pd to the active carrier layer,
Needless to say, there is no problem even if the order of Pt is reversed.
（１）触媒の調製
アルミナゾルＺｏｏ、！９．硝酸セリウム７ｇ、塩化・
母ラジウム水溶液２０Ｉ！を適当量の水に分散させてス
ラ９−（Ｉ）を調製した。また、アルミナゾル１００）
Ｆ、硝酸セリウム７１１．ヘキサクロロ白金酸溶液１５
ｇを適当量の水に分散させてスラリ＝（■）を調製した
。(1) Preparation of catalyst Alumina sol Zoo! 9. 7g of cerium nitrate, chloride
Mother radium aqueous solution 20I! Sura 9-(I) was prepared by dispersing it in an appropriate amount of water. Also, alumina sol 100)
F, cerium nitrate 711. Hexachloroplatinic acid solution 15
A slurry (■) was prepared by dispersing g in an appropriate amount of water.
内径２５簡、長さ１５０＋ｍｎのコーノライト製のハニ
カム担体をスラリー（Ｉ）で被覆し、乾燥後１０００℃
で焼成した。更にこの上をスラリ＝（Ｉ［）で被覆し、
乾燥後１０００Ｃで焼成した。これを触媒Ａとした。A cornolite honeycomb carrier with an inner diameter of 25 mm and a length of 150+ mm was coated with slurry (I) and dried at 1000°C.
It was fired in Furthermore, coat this with slurry = (I[),
After drying, it was fired at 1000C. This was designated as catalyst A.
同様のハニカム担体をスラリー（Ｉ）で被覆し、乾燥後
１０００℃で焼成したものを触媒Ｂ１スラリー（■）で
被覆し乾燥後焼成したものを触媒ｃ１スラ’）−（Ｉ）
とスラリー（ＩＩ）を混合した混合スラリーで被覆し乾
燥後焼成したものを触媒りとしだ。A similar honeycomb carrier was coated with slurry (I), dried and calcined at 1000°C, then coated with catalyst B1 slurry (■), dried and calcined to form catalyst c1 slurry')-(I).
The catalyst was coated with a mixed slurry of and slurry (II), dried and calcined, and then used as a catalyst.
これら触媒のうち触媒Ａが本発明の触媒である。Among these catalysts, catalyst A is the catalyst of the present invention.
（２） 触媒の効果
以上４種類の触媒の中に、濃度３％のメタンガス流を入
口流速２０ｍ／＠ｅｅで流入し、各触媒温度におけるメ
タン転化率を測定した。その結果を第３図に示した。図
から明らかなように、触媒Ａ（曲線ａ）、触媒Ｄ（曲”
線ｄ）は低温域からメタン転化率が太き（５００℃以上
でガスは完全燃焼した。触媒Ｂ（曲線ｂ）は低温域から
メタンガスは転化するが、６００℃以上でも完全燃焼す
ることがない。触媒Ｃ（曲線Ｃ）は５００℃以下ではほ
とんどメタンを転化しないが６００℃以上で完全燃焼し
た。(2) Effects of catalyst A methane gas flow with a concentration of 3% was introduced into four types of catalysts at an inlet flow rate of 20 m/@ee, and the methane conversion rate at each catalyst temperature was measured. The results are shown in Figure 3. As is clear from the figure, catalyst A (curve a), catalyst D (curve “
Line d) indicates that the methane conversion rate is large from the low temperature range (gas was completely combusted at temperatures above 500°C. For catalyst B (curve b), methane gas is converted from the low temperature range, but complete combustion does not occur even above 600°C). Catalyst C (curve C) hardly converted methane at temperatures below 500°C, but completely burned at temperatures above 600°C.
次に、これら４種類の触媒を予め空気中で１０００’０
．３０時間加熱しておき、それを用いて上と同様の条件
でメタン転化率を測定した。その結果を第４図に示しだ
。触媒Ａ（曲線ａ／ ）は低温域からメタン転化率は高
く５２０℃以上で完全燃焼した。Next, these four types of catalysts were preliminarily heated at 1000'0 in air.
．． After heating for 30 hours, the methane conversion rate was measured under the same conditions as above. The results are shown in Figure 4. Catalyst A (curve a/ ) had a high methane conversion rate in the low temperature range and was completely combusted at 520°C or higher.
触媒Ｂ（曲線ｂ／）は低温域からメタンを転化するが６
００℃以上の高温域でもガスを完全燃焼させることはな
かった。触媒Ｃ（曲線Ｃ′）は５５０℃以下の低温域で
はほとんどメタンを転化しなかったが、６２０℃でガス
を完全燃焼させた。そして、触媒Ｄ（曲線ｄ′）は、第
３図の曲線ｄとは全く異なり、５４０℃の低温域ではほ
とんどメタンを転化することなく、６５０℃以上の高温
域ではじめてメタンを完全燃焼させた。Catalyst B (curve b/) converts methane from the low temperature range, but 6
Even at high temperatures of 00°C or higher, the gas was not completely combusted. Catalyst C (curve C') hardly converted methane at low temperatures below 550°C, but completely combusted the gas at 620°C. Catalyst D (curve d') is completely different from curve d in Figure 3; it converts almost no methane in the low temperature range of 540°C, and completely burns methane only in the high temperature range of 650°C or higher. .
本発明のガスタービン用燃焼触媒は、従来の貴金属系燃
焼触媒に比べて、低温着火性を保持し力から、その耐熱
性が大幅に向上したものである。The combustion catalyst for gas turbines of the present invention maintains low-temperature ignitability and has significantly improved heat resistance compared to conventional noble metal-based combustion catalysts.
従って、エネルギーの節約及び効率的利用が可能であり
、又、ＮＯｘ等を発生させることなく燃焼が可能である
ため、環境汚染等の問題を惹き起こすことがなく有用で
ある。Therefore, energy can be saved and used efficiently, and combustion can be performed without generating NOx or the like, so it is useful without causing problems such as environmental pollution.
第１図、第２図はそれぞれガスタービン用の燃焼触媒の
表面部分を模式的に表わす図で、第１図が従来のもの、
第２図が本発明のものである。
第３図は実施例の触媒の入口温度とメタン転化率の関係
図、第４図は実施例の触媒を空気中で１０００℃、３０
時間加熱した後における入口温度とメタン転化率の関係
図である。
１・・・耐熱性担体、２・・・活性担体層、３・・・貴
金属の粒子、４・・・Ｐｄ、５・・・Ｐｔ０第０図
第２回
第３目
き口ｊ匙、Ｌ （０ｃ）−
λＶ子炙 （０Ｃ）Figures 1 and 2 are diagrams schematically representing the surface portions of combustion catalysts for gas turbines, respectively; Figure 1 is a conventional one;
FIG. 2 shows the present invention. Fig. 3 is a diagram showing the relationship between the inlet temperature and methane conversion rate of the catalyst of the example, and Fig. 4 shows the relationship between the inlet temperature and the methane conversion rate of the catalyst of the example.
FIG. 2 is a diagram showing the relationship between inlet temperature and methane conversion rate after heating for a certain period of time. DESCRIPTION OF SYMBOLS 1...Heat-resistant carrier, 2...Active carrier layer, 3...Precious metal particles, 4...Pd, 5...Pt0 Figure 0 2nd 3rd opening spoon, L (0c) - λV Roasted (0C)
Claims (1)
担体層と、該担体層内又は表面に分散して担持される白
金及び・やラジウムの粒子とから成るガスタービン用燃
焼触媒において、 該白金及び・母ラジウムの粒子が、該担体層内又は表面
に混在して分散するのではなく、それぞれ別個に層を成
して存在していることを特徴とするガスタービン用燃焼
触媒。[Claims] Consisting of a heat-resistant carrier, an active carrier layer formed by coating the surface of the carrier, and particles of platinum and/or radium dispersed and supported within or on the carrier layer. The combustion catalyst for gas turbines is characterized in that the platinum and mother radium particles are not mixed and dispersed in or on the carrier layer, but are present in separate layers. Combustion catalyst for gas turbines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58121038A JPS6014939A (en) | 1983-07-05 | 1983-07-05 | Combustion catalyst for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58121038A JPS6014939A (en) | 1983-07-05 | 1983-07-05 | Combustion catalyst for gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6014939A true JPS6014939A (en) | 1985-01-25 |
| JPH0512021B2 JPH0512021B2 (en) | 1993-02-17 |
Family
ID=14801278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58121038A Granted JPS6014939A (en) | 1983-07-05 | 1983-07-05 | Combustion catalyst for gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6014939A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5248251A (en) * | 1990-11-26 | 1993-09-28 | Catalytica, Inc. | Graded palladium-containing partial combustion catalyst and a process for using it |
| US5250489A (en) * | 1990-11-26 | 1993-10-05 | Catalytica, Inc. | Catalyst structure having integral heat exchange |
| US5258349A (en) * | 1990-11-26 | 1993-11-02 | Catalytica, Inc. | Graded palladium-containing partial combustion catalyst |
| US5259754A (en) * | 1990-11-26 | 1993-11-09 | Catalytica, Inc. | Partial combustion catalyst of palladium on a zirconia support and a process for using it |
| US5281128A (en) * | 1990-11-26 | 1994-01-25 | Catalytica, Inc. | Multistage process for combusting fuel mixtures |
| US5425632A (en) * | 1990-11-26 | 1995-06-20 | Catalytica, Inc. | Process for burning combustible mixtures |
| US5511972A (en) * | 1990-11-26 | 1996-04-30 | Catalytica, Inc. | Catalyst structure for use in a partial combustion process |
| JP2007180018A (en) * | 2005-12-02 | 2007-07-12 | Mitsubishi Materials Corp | Porous titanium with small contact resistance and its manufacturing method |
-
1983
- 1983-07-05 JP JP58121038A patent/JPS6014939A/en active Granted
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5248251A (en) * | 1990-11-26 | 1993-09-28 | Catalytica, Inc. | Graded palladium-containing partial combustion catalyst and a process for using it |
| US5250489A (en) * | 1990-11-26 | 1993-10-05 | Catalytica, Inc. | Catalyst structure having integral heat exchange |
| US5258349A (en) * | 1990-11-26 | 1993-11-02 | Catalytica, Inc. | Graded palladium-containing partial combustion catalyst |
| US5259754A (en) * | 1990-11-26 | 1993-11-09 | Catalytica, Inc. | Partial combustion catalyst of palladium on a zirconia support and a process for using it |
| US5281128A (en) * | 1990-11-26 | 1994-01-25 | Catalytica, Inc. | Multistage process for combusting fuel mixtures |
| US5405260A (en) * | 1990-11-26 | 1995-04-11 | Catalytica, Inc. | Partial combustion catalyst of palladium on a zirconia support and a process for using it |
| US5425632A (en) * | 1990-11-26 | 1995-06-20 | Catalytica, Inc. | Process for burning combustible mixtures |
| US5511972A (en) * | 1990-11-26 | 1996-04-30 | Catalytica, Inc. | Catalyst structure for use in a partial combustion process |
| JP2007180018A (en) * | 2005-12-02 | 2007-07-12 | Mitsubishi Materials Corp | Porous titanium with small contact resistance and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0512021B2 (en) | 1993-02-17 |
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