Heat pump distillation

Details Heat pump distillation Heat pump distillation

2011-08-23

2011-08-23

Manoharan, Virginia (Department: 1771)

Distillation: apparatus

Apparatus

Systems

C062S238500, C062S238700, C062S324100, C062S510000, C159S024200, C159S046000, C202S155000, C202S158000, C202S172000, C202S176000, C202S182000

Reexamination Certificate

active

08002952

ABSTRACT:
A distillation column is disclosed with a folded design. The column includes a plurality of rectification zones and corresponding stripping zones Each rectification zone is linked to a heat pump or a stage of a heat pump. Overhead vapor from the top rectification zone is compressed and used to heat bottoms liquid from the bottom stripping zone. Similarly, overhead vapor from the middle rectification zone is compressed and used to heat liquid from a middle stripping zone and overhead from a lower rectification zone is compressed and used to heat liquid taken from the uppermost or top stripping zone. A single multiple stage heat pump compressor may be utilized as opposed to a plurality of heat pumps Because the heat exchanger from each rectification-stripping zone pair has a lower duty, economical stab-in heat exchangers may be utilized.

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