Method and apparatus for regenerating activated carbon containing an adsorbed volatile organic absorbate
Patent
·
OSTI ID:6452878
A method is described for regenerating spent activated carbon containing adsorbed volatile organic adsorbate comprising: establishing a confined downwardly moving bed of activated carbon; adding spent carbon to the top of said bed; introducing superheated steam into the bottom of said bed in contact with said carbon; recovering exit gas including predominantly superheated steam and volatilized adsorbate from the top of said bed; circulating a portion of said exit gas through a superheater and compressor to the bottom of said bed; withdrawing a portion of said exit gas through a cooler to condense steam and volatile adsorbate; continuously circulating superheated steam in a closed loop through said downwardly moving bed, said compressor and said superheater; recovering partially regenerated activated carbon containing residual volatile adsorbate from the bottom of said bed.
- Assignee:
- Tigg Corp., Pittsburgh, PA (United States)
- Patent Number(s):
- A; US 5230872
- Application Number:
- PPN: US 7-749946
- OSTI ID:
- 6452878
- Country of Publication:
- United States
- Language:
- English
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