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Heat exchanger made of composite materials

A composite material, heat exchanger technology, applied in the direction of heat exchanger type, indirect heat exchanger, heat exchange equipment, etc., can solve the problems of low pressure resistance, poor corrosion resistance, low temperature resistance, etc.

Inactive Publication Date: 2010-06-16
李士贤 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the existing shell and tube heat exchangers, such as low pressure resistance, low temperature resistance, and poor corrosion resistance, and provide a heat exchanger made of composite materials.

Method used

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  • Heat exchanger made of composite materials
  • Heat exchanger made of composite materials
  • Heat exchanger made of composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the tube-and-tube heat exchanger includes a shell 1 , heat exchange tubes 2 arranged in the shell 1 , tube sheets 3 arranged at both ends of the heat exchange tubes 2 , and seal heads 4 arranged outside the tube sheet 3 .

[0023] The shell 1 (including the connecting pipe) can be made of polypropylene (PP), carbon steel or carbon steel shell inner layer sprayed with F46 depending on the service conditions. If the inner layer of the carbon steel shell is sprayed with F46, the shell side of the heat exchange can also be used under the conditions of strong corrosive media, temperature ≤ 200 ° C, and pressure ≤ 0.5 MPa.

[0024] The tube sheet 3 is made of polytetrafluoroethylene (F4).

[0025] The sealing head 4 can be made of metal or polypropylene. If the tube side medium is highly corrosive and the temperature is high (≤200°C), carbon steel heads are used, and polyperfluoroethylene propylene (F46) is sprayed on the inner surface of the carb...

Embodiment 2

[0031] This embodiment is basically the same as Embodiment 1, and the only difference lies in the composition of the materials used to make the heat exchange tube 2 . The material components in this embodiment, in terms of mass percentage, are: polyperfluoroethylene propylene accounts for 54 wt%, graphite accounts for 45 wt%, and titanate accounts for 1 wt%.

Embodiment 3

[0033] This embodiment is basically the same as Embodiment 1, and the only difference lies in the composition of the materials used to make the heat exchange tube 2 . The material components in this embodiment are, in terms of mass percentages, respectively: polyperfluoroethylene propylene accounts for 50 wt%, graphite accounts for 49.5 wt%, and titanate accounts for 0.5 wt%.

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Abstract

The invention discloses a heat exchanger, in particular to a heat exchanger made of composite materials. The heat exchanger comprises a shell, a heat exchanging tube, a tube sheet and an end socket, wherein, the shell is made of polypropylene or carbon steel; the heat exchanging tube is arranged in the shell and is made of graphite modified F46; the tube sheet is arranged at two ends of the heat exchanging tube and is made of polytetrafluoroethylene; and the end socket is arranged at the outer side of the tube sheet and is made of the carbon steel. Fluorinated ethylene propylene is sprayed on the surface of the inner side of the end socket. The heat exchanger of the invention has excellent corrosion resistance, higher temperature tolerance, higher service pressure (the tube stroke is less than or equal to 1MPa, and the shell stroke is less than or equal to 0.5MPa), has wide application field and lower manufacture cost, and can be accepted by the majority of users.

Description

technical field [0001] The invention is a heat exchanger, specifically a heat exchanger made of composite materials. Background technique [0002] Heat exchangers, also known as heat exchangers, are widely used in many industrial fields such as chemical industry, metallurgy, and pharmaceuticals. Due to the different temperature, pressure and medium used, the heat exchanger should be made of different materials. At present, the materials for making heat exchangers mainly include carbon steel, stainless steel, titanium, aluminum, lead, copper, glass, plastic, graphite, etc. [0003] There are many structural types of heat exchangers, such as shell and tube type, spray type, spiral plate type, flat plate type and so on. Among them, the shell and tube type has the largest application, accounting for about 40% of the heat exchanger application. [0004] Although there are many kinds of shell and tube heat exchangers made of different materials, they have certain limitations in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F21/00F28D7/10
Inventor 李士贤顾友良
Owner 李士贤