초록 ▼

A process, especially a PSA or TSA process, for purifying a gas containing at least carbon dioxide (CO2) as impurity, in which the carbon dioxide is adsorbed on an adsorbent comprising particles of activated alumina. According to this process, the activated alumina has a specific surface area of bet

A process, especially a PSA or TSA process, for purifying a gas containing at least carbon dioxide (CO2) as impurity, in which the carbon dioxide is adsorbed on an adsorbent comprising particles of activated alumina. According to this process, the activated alumina has a specific surface area of between 200 m2/g and 299 m2/g and contains at least 80% aluminum oxide (Al2O3), silicon oxide (SiO2), iron oxide (Fe2O3) and from 0.001% to 7.25% of at least one oxide of at least one alkali or alkaline-earth metal, such as sodium and potassium oxides. According to the invention, the gas stream to be purified is air or a synthesis gas.

대표청구항 ▼

1. Process for purifying a gas stream containing at least carbon dioxide (CO2) as impurity, which comprises: adsorbing at least some of the carbon dioxide (CO2) on at least one adsorbent; said adsorbent comprising particles of at least one activated alumina having a specific surface area of between

1. Process for purifying a gas stream containing at least carbon dioxide (CO2) as impurity, which comprises: adsorbing at least some of the carbon dioxide (CO2) on at least one adsorbent; said adsorbent comprising particles of at least one activated alumina having a specific surface area of between 200 m2/g and 299 m2/g; and said activated alumina containing:at least 80% aluminum oxide (Al2O3); silicon oxide (SiO2); iron oxide (Fe2O3); and from 0.001% to 7.25% of at least one oxide of at least one alkali or alkaline-earth metal.