Intermediate reboiler for a methanol plant

Details Intermediate reboiler for a methanol plant Intermediate reboiler for a methanol plant

1993-06-18

1994-09-13

Manoharan, Virginia

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

202154, 202155, 202235, 203 25, 203 27, 203 78, 203 99, 203DIG9, 203DIG8, 203DIG19, 203DIG23, 568913, B01D 314

Patent

active

053465938

ABSTRACT:
A methanol refining column and method using an intermediate reboiler. Use of the intermediate reboiler reduces methanol production energy requirements. A side stream at or near a fusel oil takeoff point is heated in an intermediate reboiler by a low temperature heating medium (relative to a bottoms reboiler) and returned to the column at or near the fusel oil take-off tray. The take-off tray is operated at 85.degree.-110.degree. C., and 70-90 percent of the reboiler duty is supplied through the intermediate reboiler. The remaining heat load is supplied by a bottoms steam reboiler.

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Ognisty, 1993 A.L.Ch.E. Spring National Meeting, Paper No. 21a, Mar. 30, 1993.
Kaibel et al., Gas Separation and Purification, vol. 4, Jun. 1990, pp. 109-114.
Kaibel, International Chemical Engineering, vol. 32, No. 4, Oct. 1992, pp. 631-641.

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