초록 ▼

The invention is a reboiler-condenser which increases the efficiency of heat transfer between boiling and condensing fluids, such as oxygen and nitrogen in air separation or similar cryogenic applications. The exchanger is built up from individual plates, the opposite sides of which have enhanced co

The invention is a reboiler-condenser which increases the efficiency of heat transfer between boiling and condensing fluids, such as oxygen and nitrogen in air separation or similar cryogenic applications. The exchanger is built up from individual plates, the opposite sides of which have enhanced condensing and boiling surfaces. The condensing channels are inclined slightly downward so that condensate can be removed at many elevations in the exchanger.

대표청구항 ▼

A heat exchanger for reboiler-condenser service which comprises: a plurality of plates of a thermally conductive material; with said plates having substantially horizontal and vertical edges and, on opposite sides of each plate, means for condensate film thinning and means for promoting boiling, res

A heat exchanger for reboiler-condenser service which comprises: a plurality of plates of a thermally conductive material; with said plates having substantially horizontal and vertical edges and, on opposite sides of each plate, means for condensate film thinning and means for promoting boiling, respectively; said sheets assembled in a stack, with the means for condensate film thinning of each pair of plates facing each other and the means for promoting boiling of each pair of plates facing each other, with a plurality of interposing support bars, thereby defining between successive plates respective flow passages; said support bars between each pair of plates with the means for condensate film thinning facing each other extending between the vertical edges of each said pair of plates and being inclined from horizontal thereby defining downward sloping condensing channels and providing a primary means for drainage of condensate, and said support bars between each pair of plates with the means for promoting boiling facing each other being vertical thereby defining vertical boiling channels; means for joining said support bars and plates; first means for closing the horizontal edges between alternating pairs of plates with the means for condensate film thinning facing each other; and second means for closing vertical edges between alternating pairs of plates with the means for promoting boiling facing each other.