Hydrogen production from sorption-enhanced steam methane reforming chemical-looping

Abstract

Abstract Conventionally, hydrogen is produced from steam methane reforming of which methane is reformed into syngas (H 2 /CO) and carbon dioxide as a by-product. However, high energy requirement is a drawback of this technique. This work aims to improve hydrogen production efficiency by focusing on the development of intensified process, named sorption-enhanced steam methane reforming chemical looping. The use of mixed metal oxide, NiO/CuO, as oxygen carrier and calcium oxide as CO 2 sorbent were examined with different amount usages. Process performances were studied through thermodynamic analysis via process simulation using Aspen Plus program. The results showed that the reforming temperature of 500-650°C provides a maximum hydrogen yield of 84% using NiO:CuO = 0.8:0.2.