Gas separation: processes – Solid sorption – Including reduction of pressure
Patent
1998-05-15
1999-09-28
Spitzer, Robert
Gas separation: processes
Solid sorption
Including reduction of pressure
95106, 95143, B01D 5304
Patent
active
059581093
ABSTRACT:
Organic solvents are removed from air by adsorption on fixed beds of activated carbon. Each carbon bed is periodically regenerated by heating it in two distinct steps and then by cooling it in two steps with a circulated inert gas stream. During the first step of heating a portion of the water is removed from the inert gas by molecular sieves or preferably by chilling the inert gas to below 10.degree. C. In a second step of heating the essentially water-free liquid solvent is recovered by chilling the inert gas. The first step of cooling of a bed is overlapping with the first step of heating of another bed. The hot gas leaving the cooled bed is used to heat the other bed. Between the two stages of heating the bed is put on "hold" till the final cooling step of another bed is completed.
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Spitzer Robert
Striker Michael J.
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