Methods for using a catalyst preburner in fuel processing...

C - Chemistry – Metallurgy – 01 – B

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C01B 3/02 (2006.01) C01B 3/26 (2006.01) C01B 3/34 (2006.01)

Patent

CA 2671466

Methods of using a catalyst preburner upstream of a catalyst burner, such as an anode tailgas oxidizer (ATO), in fuel processing applications. The methods prepare a hydrogen containing gas mixture which can be effectively combusted in a single ATO. The catalyst preburner will convert raw fuels into a gas mixture including hydrogen. This hydrogen containing gas mixture then mixes with the required air flow and anode tailgas and off-gas from a pressure swing adsorption unit before being introduced into the catalyst burner. The methods address the start-ups needs of an ATO as well as the requirement that an ATO be able to burn both liquid and gas fuels in a single unit.

L'invention concerne des procédés d'utilisation d'un pré-brûleur catalytique en amont d'un brûleur catalytique, tel qu'un oxydant de gaz résiduaire anodique (ATO), dans des applications de traitement de combustible. Les procédés préparent un mélange de gaz contenant de l'hydrogène qui peut être brûlé de manière efficace dans un ATO unique. Le pré-brûleur catalytique convertit les combustibles bruts en un mélange de gaz comprenant l'hydrogène. Ce mélange de gaz contenant de l'hydrogène est ensuite mélangé à l'écoulement d'air nécessaire, ainsi qu'au gaz résiduaire anodique et au gaz de dégagement à partir d'une unité d'adsorption modulée en pression, avant d'être introduit dans le brûleur catalytique. Les procédés répondent aux besoins initiaux d'un ATO, et s'assurent qu'un ATO soit en mesure de brûler à la fois les combustibles liquides et gazeux dans une unité unique.

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