PROCESS FOR REGENERATING ACTIVATED CARBON

摘要

The aim was to find a process making it possible for economically desorbing nickel and iron carbonyls bound to the activated carbon in the removal of carbonyl from gases containing a great deal of hydrogen sulphide. The regeneration of the invention takes place under normal pressure, in which, after the charged carbon has been rinsed with nitrogen, air is mixed with the stream of nitrogen in a temperature-controlled manner and this gas stream is replaced by one of pure air until no further heat development can be detected. The carbons are then rinsed with steam. The carbons are once more ready for use after a drying process with air followed by rendering inert with nitrogen. The activated carbon used for the absorptive separation of the carbonyls can be regenerated as often as desired, while both the adsorption capacity and quality remain unaltered.