JPH05103983A - Catalytic structure using ag as substrate - Google Patents
Catalytic structure using ag as substrateInfo
- Publication number
- JPH05103983A JPH05103983A JP3296382A JP29638291A JPH05103983A JP H05103983 A JPH05103983 A JP H05103983A JP 3296382 A JP3296382 A JP 3296382A JP 29638291 A JP29638291 A JP 29638291A JP H05103983 A JPH05103983 A JP H05103983A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- temperature
- catalytic structure
- substrate
- combustion
- 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
Landscapes
- Catalysts (AREA)
- Gas Burners (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガスタービン、ボイラ
等に使われる燃料ガス燃焼用の触媒構成体として、より
低温の触媒入口ガス温度で燃料ガスの燃焼を行うことの
できるＡｇを基体とする触媒構成体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a catalyst composition for fuel gas combustion used in gas turbines, boilers, etc., which uses Ag as a base material capable of combustion of fuel gas at a lower catalyst inlet gas temperature. The present invention relates to a catalyst structure.
【０００２】[0002]
【従来の技術】従来、ガスタービン、ボイラ等に使われ
る燃料ガス燃焼用の触媒構成体としては、ハニカム状コ
ージライトやステンレス鋼系ハニカムなどを基体とし、
担体、触媒とからなるものが使用されているが、その熱
容量が大きいことや熱伝導性が低いことなどから、燃料
ガスの燃焼時、触媒構成体を予備加熱により触媒入口温
度を平均 400〜 500℃に加熱しなければならず、甚だ煩
わしかった。2. Description of the Related Art Conventionally, as a catalyst constituent for fuel gas combustion used in a gas turbine, a boiler, etc., a honeycomb cordierite or a stainless steel type honeycomb is used as a base,
A carrier and a catalyst are used, but due to their large heat capacity and low thermal conductivity, the catalyst inlet temperature is averaged between 400 and 500 by preheating the catalyst structure during combustion of fuel gas. It had to be heated to ℃, which was very troublesome.
【０００３】[0003]
【発明が解決しようとする課題】そこで本発明は、触媒
構成体を予備加熱することなく、低い触媒入口ガス温度
で燃料ガスを燃焼できるようにしたＡｇを基体とする触
媒構成体を提供しようとするものである。SUMMARY OF THE INVENTION Therefore, the present invention intends to provide an Ag-based catalyst structure capable of burning fuel gas at a low catalyst inlet gas temperature without preheating the catalyst structure. To do.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
の本発明のＡｇを基体とする触媒構成体は、Ａｇを基体
とし、担体、触媒とからなるものである。担体として
は、Al2O3 、ZrO2、 Al2O3−SiO2、ZrO2−SiO2、バリウ
ムヘキサアルミネートのいずれかが好ましい。また、触
媒としては、Ｐｄ、Ｐｔ、Ｐｄ−Ｐｔのいずれかが好ま
しい。The Ag-based catalyst composition of the present invention for solving the above-mentioned problems comprises Ag as a base, and a carrier and a catalyst. As the carrier, any of Al 2 O 3 , ZrO 2 , Al 2 O 3 —SiO 2 , ZrO 2 —SiO 2 , and barium hexaaluminate is preferable. The catalyst is preferably Pd, Pt, or Pd-Pt.
【０００５】[0005]
【作用】上記構成の触媒構成体は、熱伝導性の高いＡｇ
を基体としているので、ガスタービン、ボイラ等の燃料
ガス燃焼用に使った際、触媒構成体の後方の燃料ガスの
燃焼熱が効率良く前方へ伝わる。従って、低い触媒入口
ガス温度で燃料ガスを燃焼できる。The catalytic structure having the above structure is made of Ag having high thermal conductivity.
Since it is used as a base, when used for combustion of fuel gas in a gas turbine, a boiler, etc., the combustion heat of the fuel gas behind the catalyst structure is efficiently transferred to the front. Therefore, the fuel gas can be burned at a low catalyst inlet gas temperature.
【０００６】[0006]
【実施例】本発明のＡｇを基体とする触媒構成体の一実
施例を従来例と比較して説明すると、実施例のＰｄ／ A
l2O3／Ａｇ（Ｐｄ 0.2ｇ／cm2 、 Al2O3 2.3ｇ／cm2)よ
りなる触媒構成体と従来例のＰｄ／ Al2O3／ステンレス
鋼（Ｐｄ 0.2ｇ／cm2 、Al2O3 2.3ｇ／cm2)よりなる触
媒構成体とを、Ｆ（燃料）／Ａ（空気）比0.02体積％の
条件でメタンを燃料とした着火テストを行った処、実施
例の触媒構成体の触媒入口温度と触媒出口温度は図１に
示すグラフの通りで、従来例の触媒構成体の触媒入口温
度と触媒出口温度は図２に示すグラフの通りであり、実
施例の触媒構成体によると燃料であるメタンは触媒入口
ガス温度 350℃で着火し、従来例の触媒構成体によると
燃料であるメタンは触媒入口ガス温度 430℃で着火し
た。EXAMPLE An example of the Ag-based catalyst composition of the present invention will be described in comparison with a conventional example. Pd / A of the example
A catalyst constituent composed of l 2 O 3 / Ag (Pd 0.2 g / cm 2 , Al 2 O 3 2.3 g / cm 2 ) and a conventional Pd / Al 2 O 3 / stainless steel (Pd 0.2 g / cm 2 , A catalyst constituent consisting of Al 2 O 3 2.3 g / cm 2 ) was subjected to an ignition test using methane as a fuel under the condition of an F (fuel) / A (air) ratio of 0.02% by volume. The catalyst inlet temperature and the catalyst outlet temperature of the constituents are as shown in the graph shown in FIG. 1, and the catalyst inlet temperature and the catalyst outlet temperature of the conventional catalyst constituent are as shown in the graph shown in FIG. According to the body, methane as fuel was ignited at a catalyst inlet gas temperature of 350 ° C, and according to the conventional catalyst constituent, methane was ignited at a catalyst inlet gas temperature of 430 ° C.
【０００７】このように従来例の触媒構成体によると触
媒入口温度を 430℃まで上げなければ着火しなかった
が、実施例の触媒構成体によると着火温度を 350℃まで
引き下げることができた。As described above, according to the catalyst structure of the conventional example, ignition did not occur unless the catalyst inlet temperature was raised to 430 ° C., but with the catalyst structure of the example, the ignition temperature could be lowered to 350 ° C.
【０００８】[0008]
【発明の効果】以上の通り本発明のＡｇを基体とする触
媒構成体によれば、従来よりも低い触媒入口ガス温度で
燃料ガスを燃焼できるので、触媒構成体を予備加熱する
必要がない。As described above, according to the Ag-based catalyst composition of the present invention, the fuel gas can be burned at a catalyst inlet gas temperature lower than that of the prior art, so that it is not necessary to preheat the catalyst composition.
【図１】本発明によるＡｇを基体とする触媒構成体のメ
タン燃焼時の触媒入口温度と触媒出口温度を示すグラフ
である。FIG. 1 is a graph showing the catalyst inlet temperature and the catalyst outlet temperature during methane combustion of a catalyst constituent body based on Ag according to the present invention.
【図２】従来の触媒構成体のメタン燃焼時の触媒入口温
度と触媒出口温度を示すグラフである。FIG. 2 is a graph showing a catalyst inlet temperature and a catalyst outlet temperature during methane combustion of a conventional catalyst structure.
Claims (3)
Ａｇを基体とする触媒構成体。1. A catalyst composition comprising Ag as a base and an Ag base comprising a carrier and a catalyst.
O2−SiO2、バリウムヘキサアルミネートのいずれかであ
ることを特徴とする請求項１記載のＡｇを基体とする触
媒構成体。2. The carrier is Al 2 O 3 , ZrO 2 , Al 2 O 3 —SiO 2 , Zr.
The catalyst constituent based on Ag according to claim 1, which is one of O 2 —SiO 2 and barium hexaaluminate.
かである請求項１又は請求項２記載のＡｇを基体とする
触媒構成体。3. The Ag-based catalyst composition according to claim 1 or 2, wherein the catalyst is any one of Pd, Pt, and Pd-Pt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3296382A JPH05103983A (en) | 1991-10-16 | 1991-10-16 | Catalytic structure using ag as substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3296382A JPH05103983A (en) | 1991-10-16 | 1991-10-16 | Catalytic structure using ag as substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05103983A true JPH05103983A (en) | 1993-04-27 |
Family
ID=17832826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3296382A Pending JPH05103983A (en) | 1991-10-16 | 1991-10-16 | Catalytic structure using ag as substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05103983A (en) |
-
1991
- 1991-10-16 JP JP3296382A patent/JPH05103983A/en active Pending
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