How the cost of high-purity hydrogen is determined?

Abstract

Hydrogen is expected to be utilized as a next generation clean energy which does not emit CO₂ when combusted, although the hydrogen production cost is still high compared to that of existing energy. This article discusses how the cost of high-purity hydrogen is determined, focusing on midsized hydrogen production of 100-1,000 Nm³/h for the next two methods including hydrogen purification that is essential for high-purification: steam reforming methods, which is the widespread process, and DMR (direct methane reforming) which is attracting attention as future CO₂-free hydrogen production.