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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0298875 (1989-01-18) |
발명자 / 주소 |
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출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 311 인용 특허 : 3 |
A process for methanol production includes preparing a hydrogen containing synthesis gas by autothermally reforming a hydrocarbonaceous feed, such as a hydrocarbon feed, with oxygen and steam in an autothermal reformer utilizing a first, monolithic catalyst having a palladium and platinum containing
A process for methanol production includes preparing a hydrogen containing synthesis gas by autothermally reforming a hydrocarbonaceous feed, such as a hydrocarbon feed, with oxygen and steam in an autothermal reformer utilizing a first, monolithic catalyst having a palladium and platinum containing catalyst therein, and a second, platinum group metal steam reforming catalyst. The autothermal reformer provides a relatively simple and compact reactor within which a wide variety of hydrocarbonaceous feeds, from heavy hydrocarbon feedstocks to natural gas, may be utilized for producing methanol synthesis gas, which is advantageously carried out at an elevated pressure. By controlling H2O to carbon and O2 to carbon feed ratios, a given feed can be autothermally reformed to yield a synthesis gas of desired ratio of 1 H2 to (2CO+3CO2) for methanol production.
A process for the production of methanol from a hydrocarbonaceous feed, comprising the steps of: (a) preheating an inlet stream comprising a hydrocarbonaceous feed, H2O, and oxygen to a preheat temperature sufficiently high to initiate catalytic oxidation of said feed as defined below; (b) introduci
A process for the production of methanol from a hydrocarbonaceous feed, comprising the steps of: (a) preheating an inlet stream comprising a hydrocarbonaceous feed, H2O, and oxygen to a preheat temperature sufficiently high to initiate catalytic oxidation of said feed as defined below; (b) introducing the preheated inlet stream into a first catalyst zone comprising a monolithic body having a plurality of gas flow passages extending therethrough and having a catalytically effective amount of palladium and platinum catalytic components dispersed therein, the amounts of feed, H2O, and oxygen introduced into said first catalyst zone being controlled to maintain is said inlet stream an H2O to C ratio of from about 0.5 to 3 and an O2 to c ratio of from about 0.35 to 0.65; (c) contacting the preheated inlet stream within said first catalyst zone with said palladium and platinum catalytic components to initiate and sustain therein catalytic oxidation of said feed to produce hydrogen and carbon oxides therefrom the temperature of at least about 250°F. (139°C.) greater than the ignition temperature of said inlet stream, and oxidizing in said first catalyst zone a quantity, less than all, of said feed, which quantity is sufficient to heat such first zone effluent to an elevated temperature high enough to catalytically steam reform, within a second catalyst zone defined below, hydrocarbon remaining is such first zone effluent without supplying external heat thereto; (d) passing the first zone effluent, while still at an elevated temperature, from said first catalyst zone to a second catalyst zone containing a platinum group metal steam reforming catalyst therein, and contacting the first zone effluent is said second catalyst zone with said reforming catalyst to react hydrocarbons therein with H2O to produce hydrogen and carbon oxides therefrom; (e) withdrawing the effluent of said second catalyst zone as said hydrogen-rich synthesis gas and cooling said synthesis gas; (f) passing said synthesis gas from step (e) to a methanol synthesis loop to react the hydrogen with carbon oxides thereof over a methanol synthesis catalyst at methanol synthesis conditions; and (g) withdrawing methanol as product from said methanol synthesis loop.
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