| 摘要 |
This invention relates to the process of solvent regeneration of activated carbon, specifically to a number of processing improvements that result in increased extent of regeneration, decreased regeneration cycle time, reduced solvent recovery requirement and/or reduced equipment complexity for the overall process. These improvements expand the utility of the solvent regeneration technology to vapor-phase carbons and allow improved efficiency using water-immiscible solvents in the regeneration of all applications of activated carbon. The improvements focus on the conditions and sequence of events that result in the replacement of the initial fluid in the carbon's internal pores with solvent at the start of the solvent regeneration process. This invention provides for the transport of regenerating solvent as vapor into the internal pores of the activated carbon, thereby allowing the solvent to condense inside the carbon pores and efficiently surrounding with solvent the adsorbates contained on the surface of the internal pores of the carbon. The creation and exploitation of the vapor transport pathway into the carbon pores for there generating solvent results in an improvement in the efficiency and effectiveness of the flooding of the carbon pores with solvent, enhancing the overall solvent regeneration process.
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