| 摘要 |
<p>The recuperation of blast furnace gas, in which the gases from the blast furnace are recovered, the carbon dioxide present in the gas is at least partially withdrawn during a first stage of carbon dioxide purification in a manner to create a blast furnace gas poor in carbon dioxide, the gas being either re-injected into the blast furnace, or recuperated and sent towards another point of use, after purification. After this first stage of carbon dioxide purification, it is provided with a second stage of purification of a substantial quantity of the nitrogen contained in the gas, in a manner to recuperate an enriched gas, before re-injection or recuperation to another point of use, for which the nitrogen content is less than 10 % by volume and preferably less than 5 % vol.</p> |
