A triangular spur plate-fin heat exchanger

Abstract

The invention provides a triangular plate-type fin for condensing a non-azeotropic multi-component mixture. The fin comprises slant parts. The ends of the adjacent slant parts are connected to form the vertex angle of a triangle, the bottom edge of the triangle is formed by the connecting line of the other ends of the adjacent slant parts, and the triangle is formed by the bottom edge and the adjacent slant parts. Protruding stabs are machined on the slant parts in a punched manner, and therefore fluid on the two sides of the slant parts is communicated through holes formed in the slant parts in a punched manner. The protruding stabs extend outwards from the slant parts in the flowing direction of the mixture. The invention provides the novel plate fin suitable for being used during condensing of the non-azeotropic multi-component mixture, and therefore condensing of different-boiling-point multi-component mixed media is achieved, the heat exchange efficiency can be improved, and the flow resistance of the fluid can be 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] The 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, cracking of petroleum or waste plastics, biomass The main process of gas production and other industries. In order to reduce the process In this type of production process, it is hoped that components with different boiling points will be precipitated by cooling step by step according to the temperature level, and the same refrigerant or product will also perform heat exchange in different temperature ranges. Therefore, condensing equi...

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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