Heat integrated distillation column

Details Heat integrated distillation column Heat integrated distillation column

1996-04-24

1998-07-21

Bhat, Nina

Distillation: apparatus

Apparatus

Systems

202158, 202160, 202235, 202237, 203 73, 203 77, B01D 302

Patent

active

057830479

ABSTRACT:
A monotube or multitube 2 is coupled to a body shell 1 via tube plates 3a and 3b at both ends, so that a tube interior 4 and a tube exterior 5 of the monotube or multitube 2 are isolated from each other. A difference is made in operating pressure between the tube interior 4 and the tube exterior 5, so that one of the tube interior 4 and the tube exterior 5 is used as a lower-pressure column and the other is used as a higher-pressure column. A wall of the tube is used as a heat transfer surface, so that heat is transferred from the higher pressure side (higher temperature side) to the lower pressure side (lower temperature side). Monotubes or multitubes 2 having different diameters are connected to each other via a reducer 20, so that a monotube or multitube 2 whose diameters are varied stepwise is disposed between the tube plates 3a and 3b at the upper and lower ends, thereby increasing the column cross-sectional area as moving from the top to the bottom of the column in the enriching section (tube interior) 4, and decreasing the column cross-sectional area as moving from the top to the bottom of the column in the stripping section (tube exterior) 5.

REFERENCES:
patent: 2117337 (1938-05-01), Lobl et al.
patent: 2556186 (1951-06-01), Hegenbarth
patent: 3227630 (1966-01-01), Beckman
patent: 3242970 (1966-03-01), Schmole
patent: 4025398 (1977-05-01), Haselden
patent: 4234391 (1980-11-01), Seader
patent: 5246541 (1993-09-01), Ryham
patent: 5250151 (1993-10-01), Huercanos
patent: 5432952 (1995-07-01), Stout

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