Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By contact with solid sorbent
Patent
1988-02-11
1990-02-06
Garvin, Patrick P.
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By contact with solid sorbent
208310Z, 208208R, 585820, 585822, C07C 712, C10G 1700
Patent
active
048990167
ABSTRACT:
Organic feedstocks containing at least one impurity component which is more strongly adsorbed on molecular sieve adsorbents than the host feedstock are purified of the said impurity by passage in the liquid phase through a fixed bed of the adsorbent whereby the impurity is selectively adsorbed and the purified feedstock recovered in unusually high yield by a novel bed regeneration procedure involving the use of a portion of the purified feedstock in the vapor phase to countercurrently remove the liquid held in the bed void space, a relatively non-sorbable purge gas to sequentially displace the purified feedstock vapor from the bed followed by a displacement of the non-sorbable purge gas from the bed void space using another portion of the purified feedstock in the vapor phase, and finally cooling and refilling the bed in a direction cocurrent with the flow of feedstock into the bed during the adsorption purification stage with a portion of the purified feedstock in the liquid phase.
REFERENCES:
patent: 3274099 (1966-09-01), Broughton
patent: 3360582 (1967-12-01), Mattox
patent: 3654144 (1972-04-01), Collins
patent: 4433195 (1984-02-01), Kulprathipanja
patent: 4795545 (1989-01-01), Scmidt
Clark Keith R.
Richman Philip
Garvin Patrick P.
Irzinski E. D.
McBride Thomas K.
UOP
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