Patent ID: 8496909
Filing Date: 2013-07-30
Classification: B01D,C01B,C10G,C10J,C10K,Y02C,Y02E,Y02P

Abstract:
1. A process for producing hydrogen comprising the steps of: gasifying a fuel into a raw synthesis gas comprising CO, hydrogen, steam, sulfur and halide contaminants in the form of H passing the raw synthesis gas through a water gas shift reactor (“WGSR”) into which reactivated calcium based sorbent is injected, the reactivated calcium based sorbent being converted to CaO, which reacts with the shifted gas to remove CO separating the solid-phase calcium-containing product from an enriched gaseous hydrogen product; regenerating the CaO by calcining the solid-phase calcium-containing product at a condition selected from the group consisting of: in the presence of steam, in the presence of CO reactivating the calcined CaO by hydrating it in the presence of at least one of: steam and water.