Patent ID: 8273139
Filing Date: 2012-09-25
Classification: B01J,C01B,C01C,Y02P

Abstract:
1. A process for producing syngas, comprising: partially oxidizing a first hydrocarbon in the presence of an oxidant and one or more first catalysts at conditions sufficient to partially combust a portion of the first hydrocarbon to provide carbon dioxide, non-combusted first hydrocarbon, and heat; reforming at least a portion of the non-combusted first hydrocarbon in the presence of at least a portion of the heat generated in the partial oxidation step and the one or more first catalysts in a catalytic partial oxidation (CPOX) reactor to provide a first syngas comprising hydrogen, carbon monoxide, and carbon dioxide; indirectly exchanging heat from the first syngas to a second hydrocarbon to reform at least a portion of the second hydrocarbon in the presence of steam and one or more second catalysts to provide a second syngas comprising hydrogen, carbon monoxide, and carbon dioxide; and reacting at least a portion of the carbon monoxide in the first syngas, the second syngas, or a mixture thereof to carbon dioxide to provide a converted syngas comprising 5% mol dry basis or less carbon monoxide, wherein the first syngas, upon exiting the CPOX reactor and prior to any further treatment or mixing, comprises from about 30% mol dry basis to about 70% mol dry basis hydrogen, from about 5% mol dry basis to about 35% mol dry basis carbon monoxide, and from about 5% mol dry basis to about 25% mol dry basis carbon dioxide.