Method and apparatus for regenerating activated carbon containin

Details Method and apparatus for regenerating activated carbon containin Method and apparatus for regenerating activated carbon containin

1991-08-26

1993-07-27

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Means separating or dissolving a material constituent

422144, 422145, 422216, 422232, 422234, 422235, 55 59, 55 60, 122 4D, 502 55, B01D 1102, B01D 5300, B01J 800, B01J 2034

Patent

active

052308723

ABSTRACT:
Activated carbon regeneration is carried out in a downwardly moving bed with superheated steam moving upwardly through the bed. The superheated steam is maintained in a closed loop which comprises the steam treatment vessel, a steam pump and a steam superheater. The superheated steam is supplied at low pressure (e.g. less than about 10 psig) and provides the heat for volatilizing water and desorbed organic volatiles. The resulting dry, partially regenerated activated carbon may be re-used directly, but preferably is treated in a vacuum chamber to remove residual water and additional adsorbate.

REFERENCES:
patent: 1522480 (1925-01-01), Allen
patent: 1836301 (1931-12-01), Bechthold
patent: 2844516 (1958-07-01), Berg
patent: 4971606 (1990-11-01), Sircar et al.
patent: 4980325 (1990-12-01), Sechrist

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