Vertical falling-film heat exchanger outside pipe

A heat exchanger and falling film technology, applied in the field of new vertical falling film heat exchangers outside the tube, can solve the problems of low heat exchange effect and uneven film distribution, reduce mass transfer resistance, uniform liquid film, and ensure high efficiency The effect of heat and mass transfer effects

Active Publication Date: 2011-08-17
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing falling film heat exchangers such as uneven film distribution and low heat transf

Method used

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  • Vertical falling-film heat exchanger outside pipe
  • Vertical falling-film heat exchanger outside pipe
  • Vertical falling-film heat exchanger outside pipe

Examples

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Embodiment

[0028] see figure 1 As shown, a vertical falling film heat exchanger outside the tube includes a heat exchanger shell 11, a support frame 3 is arranged outside the middle part of the heat exchanger shell 11, and a strengthening exchanging frame is vertically arranged inside the heat exchanger shell 11. The heat tube bundle 2, the bottom of the heat exchanger shell 11 is connected with the lower chamber 16 of the tube side through the flange 15, the bottom of the lower chamber 16 of the tube side is provided with a base 17, and the lower chamber 16 of the tube side is connected with the strengthening exchange The heat source / cold source inlet 1 connected by the heat pipe bundle 2 is connected with a solution outlet 14 on the lower side of the heat exchanger shell 11; The upper cavity 7 is provided with a heat source / cooler outlet 8 communicating with the enhanced heat exchange tube bundle 2, and the upper part of the heat exchanger shell 11 is provided with a solution inlet 10 ...

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Abstract

The invention discloses a vertical falling-film heat exchanger outside a pipe, which comprises a heat exchanger shell, a reinforced heatexchange tube bundle, a film distributing device, a tube pass accommodating chamber, sight glasses, a fluid inlet and outlet pipeline and the like. The double-layer film distributing device is arranged at the top of a heat exchanger; and a fluid flows down uniformly along the outer wall of a pipe in a film shape through the film distributing device to take away heat of another fluid in a heat exchange tube or transfer the heat to another fluid in the heat exchange tube so as to realize heat exchange of two different fluids. Because a tangential-flow liquid introducing manner and the unique double-layer film distributing device are adopted for the heat exchanger, the problems of nonuniform film distribution, low effective heat exchange area and the like of the traditional falling-film heat exchanger are solved. By adopting the device, the mass transfer resistance of the fluid can be effectively reduced, the heat transfer and mass transfer capacities of the heat exchanger are remarkably improved, and the device can be widely applied to the industries, such as chemical industry, thermotechnical industry, light industry, food, pharmacy, metallurgy, sea water desalination and the like.

Description

technical field [0001] The invention relates to a new type of vertical falling film heat exchanger outside the tube, which is suitable for the heat and mass transfer process of heat exchange medium with various components, and can be applied to chemical industry, thermal industry, light industry, food, pharmaceutical, metallurgy and seawater desalination etc. Background technique [0002] In recent years, with the improvement of society's requirements for energy saving, various chemical and refrigeration equipment have higher and higher requirements for heat exchangers. As an efficient heat exchange device, falling film heat exchanger is widely used in evaporation, distillation and condensation equipment. The existing falling film heat exchangers are generally based on horizontal tube falling film, plate type falling film and vertical tube falling film. Falling film heat exchangers with these structures often have uneven film distribution, uneven film thickness or thermal i...

Claims

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Application Information

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IPC IPC(8): F28D3/02F28D3/04F28F25/02
Inventor 龚宇烈马伟斌邱泽正骆超卜宪标
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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