Reforming exchanger with integrated shift conversion

摘要

Reforming exchangers for syngas production are provided. The reforming exchangers can have a shell-and-tube configuration and include a shift catalyst on the shell side of the exchanger to reduce a carbon monoxide concentration in a shell side product gas mixture. Processes for forming syngas using the reforming exchangers are also provided.

主权项

1. A syngas reforming exchanger, comprising:
a vessel comprising an elongated shell having a first end and a second end; a shell side fluid inlet adjacent the first end for receiving a hot gas feed; a tube side fluid inlet adjacent the second end for receiving a reactant feed gas; a shell side fluid outlet fluidly isolated from the tube side fluid inlet by a tube sheet adjacent the second end for discharging a reduced carbon monoxide product gas mixture; a tube bundle comprising a plurality of tubes that contain a reforming catalyst, wherein the tubes have an inlet end secured to the tube sheet for receiving the reactant feed gas and an outlet end adjacent the shell side fluid inlet for discharging a reformed product gas into the hot gas feed to form a gas mixture; and one or more shift catalysts for converting carbon monoxide to carbon dioxide in the gas mixture to produce the reduced carbon monoxide product gas mixture, wherein the shift catalyst is contained on the shell side and is in contact with the tubes outer walls, and wherein the portion of the tubes concurrent with the shift catalyst is void of the reforming catalyst.