Axial convective reformer

C - Chemistry – Metallurgy – 01 – B

Patent

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Details

C01B 3/38 (2006.01) C01B 3/02 (2006.01) F22B 1/02 (2006.01)

Patent

CA 2550062

A steam/hydrocarbon reformer employing a conventional radiantly heated first reformer section and a flue-gas heated second reformer section is disclosed. The second reformer section comprises catalyst-containing tubes for partially reforming a hydrocarbon stream. The catalyst-containing tubes in the second reformer section are disposed in a conduit for conveying flue gas from the first reformer section, thereby receiving heat from the flue gases. The flue gases flow either cocurrent or countercurrent to the process gas in the catalyst-containing tubes in the second reformer section. The partially reformed hydrocarbon stream from the second reformer section is fed to the catalyst-containing tubes in the first reformer section thereby producing a hydrogen-rich synthesis gas.

La présente description porte sur un reformeur à vapeur/hydrocarbures composé d'une première section de reformage traditionnelle chauffée par rayonnement et d'une seconde section de reformage chauffée par des gaz de carneau. La seconde section de reformage comporte des tubes renfermant un convertisseur catalytique pour le reformage partiel d'un courant d'hydrocarbures. Les tubes renfermant le convertisseur catalytique de la seconde section sont disposés dans un conduit pour l'acheminement des gaz de carneau provenant de la première section et reçoivent donc la chaleur des gaz de carneau. Les gaz de carneau s'écoulent soit à cocourant, soit à contre- courant par rapport au gaz de procédé dans les tubes renfermant le convertisseur catalytique, dans la seconde section de reformage. Le courant d'hydrocarbures partiellement reformé provenant de la seconde section est acheminé vers les tubes, dans la première section de reformage, ce qui a pour effet de produire un gaz de synthèse riche en hydrogène.

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