METHOD FOR PRODUCING BLUE HYDROGEN
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United States of America
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Issued Date -
Jan 9, 2025
app pub date -
Nov 22, 2022
filing date -
Nov 22, 2022
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Abstract
The present invention pertains to a method for producing blue hydrogen, the method including the steps of: obtaining a mixed gas containing hydrogen and carbon dioxide by performing a water gas shift (WGS) process with a product obtained through a steam methane reforming (SMR) process using natural gas and steam; preparing an aqueous sodium carbonate solution or an aqueous sodium hydroxide solution in a dissolving tank; performing a bicarbonate reaction by introducing the mixed gas into a carbonation reactor together with the aqueous sodium carbonate solution or the aqueous sodium hydroxide solution; obtaining high-purity hydrogen gas from the carbonation reactor; and obtaining sodium bicarbonate from downstream of the carbonation reactor.
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