IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0520950
(1974-11-04)
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| 우선권정보 |
JA-0055241 (1972-06-02) |
|
발명자
/ 주소 |
- Kawagoshi Hiroshi (Hitachi JA) Takeuchi Masato (Katsuta JA) Nakajima Fumito (Hitachi JA)
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| 출원인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
20 인용 특허 :
0 |
초록
▼
A process for steam reforming of hydrocarbons utilizing a catalyst comprising at least 3% by weight, preferably 10, to 30% by weight of nickel per weight of the catalyst, at least 2 mg-atoms of silver per 100 g of the catalyst; if necessary at least one of rare earth elements such as lanthanum, ceri
A process for steam reforming of hydrocarbons utilizing a catalyst comprising at least 3% by weight, preferably 10, to 30% by weight of nickel per weight of the catalyst, at least 2 mg-atoms of silver per 100 g of the catalyst; if necessary at least one of rare earth elements such as lanthanum, cerium, yttrium, praseodimium, neodimium, or a mixture of rare earth elements in an atomic ratio of the rare earth elements to silver of 10 or less, preferably 0.2 to 2.0; and a heat-resistant oxide carrier such as alumina, silica, magnesia, titania, zirconia, beryllia or thoria.
대표청구항
▼
In a process for steam reforming gaseous hydrocarbons selected from the group consisting of methane, liquefied natural gas, liquefied petroleum gas, butane, hexane, petroleum light distillates, naphtha and off-gas from processes utilizing various hydrocarbons as feeds, wherein the hydrocarbons are p
In a process for steam reforming gaseous hydrocarbons selected from the group consisting of methane, liquefied natural gas, liquefied petroleum gas, butane, hexane, petroleum light distillates, naphtha and off-gas from processes utilizing various hydrocarbons as feeds, wherein the hydrocarbons are passed in a gaseous state through a catalyst together with steam at an elevated temperature under pressure whereby the hydrocarbons are subjected to a steam reforming reaction wherein the resulting product gas consists mainly of hydrogen, carbon monoxide, carbon dioxide, methane and steam with the relationship among these product components being represented by the following equilibrium equations: CH4 +H2O�3H2 CO +H2O�2 +H2 the improvement wherein when said off-gas is the feed, said off-gas comprises paraffinic hydrocarbons and up to about 15% by volume of olefinic hydrocarbons and wherein said catalyst consists essentially of from 3% to 30% by weight of nickel in terms of NiO, based on the catalyst, at least 2 mg-atoms of silver per 100 gram of the catalyst, at least one rare earth element in an atomic ratio of the rare earth element to silver of 0.2 to 10, and a heat-resistant carrier, the elevated temperature being from 350 to 900°C. and the pressure being from 1 to 50 kg/cm2.
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