METHOD FOR REMOVING OXYGEN MOLECULE AND METHOD FOR PURIFYING CARBON MONOXIDE
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United States of America Patent
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Nov 30, 2023
app pub date -
Oct 6, 2021
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Oct 8, 2020
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Abstract
A method for removing an oxygen molecule from a carbon-monoxide-containing gas which includes removing water from a platinum catalyst by heat treating the platinum catalyst in a heat treatment vessel until the concentration of water contained in inert gas discharged from the heat treatment vessel after being supplied to the heat treatment vessel and used in the heat treatment is less than 1000 vol ppm; and bringing the carbon-monoxide-containing gas into contact with the platinum catalyst to remove an oxygen molecule from the carbon-monoxide-containing gas. Also disclosed is a step of removing carbon dioxide from gas after removing an oxygen molecule using a carbon dioxide adsorbent, as well as a pressure swing adsorption step of recovering carbon monoxide from gas after removing carbon dioxide by a pressure swing adsorption method, to obtain purified carbon monoxide having a purity of 99.95 vol % or more.
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