A right-angle plate-fin heat exchanger for condensing non-azeotropic multi-component mixtures

Abstract

The invention provides a plate-fin type heat exchanger for non-zaeotropic multicomponent mixture condensation. The plate-fin type heat exchanger comprises plates which are parallel to one another, fins are arranged between the plates, the fins comprise perpendicular parts perpendicular to the plates, spikes are machined on the perpendicular parts in a stamping mode, and therefore fluid at the two sides of the perpendicular parts is communicated through holes formed in the perpendicular parts in a stamping mode; the spikes extend outwards from the perpendicular parts in the flow direction of a mixture. By means of the novel plate-fin type heat exchanged used for the non-azeotropic multicomponent mixture condensation, the problem of the condensation of multicomponent mixed media with different boiling points is solved, the heat exchange efficiency is improved, and flow resistance of the fluid is reduced.

Description

technical field [0001] The invention belongs to the field of heat exchangers, in particular to a heat exchanger used for condensation of mixed media with different boiling points, and belongs to the field of F28D heat exchangers. Background technique [0002] Condensation of mixed media with different boiling points is natural gas liquefaction (the main components are methane with a boiling point of -162°C, ethane with a boiling point of -88°C, propane with a boiling point of -42°C, etc.), air separation, mixed refrigerant refrigeration, petroleum or waste plastic cracking, biomass The main process of gas production and other industries. to reduce the process This kind of production process hopes to cool and precipitate components with different boiling points step by step according to the temperature level. The same refrigerant or product also exchanges heat in different temperature ranges. Therefore, the condensing equipment is required to facilitate the simultaneous hea...

AI Technical Summary

Problems solved by technology

Existing studies on condensation heat transfer of non-azeotropic mixed media focus more on the working conditions containing a non-condensable gas, and adopt measures such as low grooves and artificial roughness surfaces to reduce the average liquid film thickness when pure components condense Measures that have been proven to be effective are sometimes ineffective in the presence of noncondensable gases

, while the condensation heat transfer process and mechanism in the natural gas liquefaction and petroleum cracking industries are more complicated, the condensation process usually contains more than two kinds of non-condensable gases, and the heat transfer situation is more complicated

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