Concentrating evaporators – Multiple effects
Patent
1974-12-06
1976-05-25
Yudkoff, Norman
Concentrating evaporators
Multiple effects
159 20R, 159 47R, 426386, 426387, B01D 126, A23F 300, A23F 500
Patent
active
039590674
ABSTRACT:
In the process for the concentration of volatiles-bearing products by a low-temperature, short-time, multi-effect evaporation method, a forward feed of the product and vapor occurs so that at least from a given stage of evaporation, each subsequent stage of evaporation is carried out at a lower temperature. The volatile constituents, removed with the vapor from one or more effects and subsequently condensed and recovered, are combined with the partially concentrated product before a final stage or stages of evaporation at a temperature lower than that at which they were originally distilled off. Thus a more highly volatile fraction is again removed with the vapor in the said final stage or stages of evaporation.
REFERENCES:
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patent: 2796120 (1957-06-01), Lockman et al.
patent: 2888982 (1959-06-01), Ramen
patent: 2941590 (1960-06-01), Rosenblad
patent: 3061448 (1962-10-01), Majonnier et al.
patent: 3065085 (1962-11-01), Chirico
patent: 3117877 (1964-01-01), Byer et al.
Sofer J.
The A.P.V. Company Limited
Yudkoff Norman
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