Patent ID: 6682714
Filing Date: 2004-01-27
Classification: C01B,Y02E

Abstract:
A method for the production of hydrogen gas, comprising the steps of:a) generating a reducing gas; b) generating steam; c) contacting said reducing gas with a first metal oxide in a first reaction zone to reduce said first metal oxide to a first metal; d) contacting said steam with a second metal in a second reaction zone to oxidize said second metal to a second metal oxide and form a first hydrogen gas stream; e) extracting said first hydrogen gas stream from said second reaction zone; f) contacting said reducing gas with said second metal oxide in said second reaction zone to reduce said second metal oxide to said second metal; g) contacting said steam with said first metal in said first reaction zone to oxidize said first metal to said first metal oxide and form a second hydrogen gas stream; and h) extracting said second hydrogen gas stream from said first reaction zone, wherein at least one of said first and second metals is in a molten state and said steam contacting step comprises contacting said metal in a molten state with steam by infecting steam into said molten metal.