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Fluoroplastic-steel air preheater with anti-corrosive and anti-blockage functions

An air preheater and preheater technology, applied in heat exchanger shells, heat exchange equipment, lighting and heating equipment, etc., can solve problems affecting working life and heat exchange performance, ash and slagging, low temperature corrosion, etc. , to achieve the effect of solving flue gas condensation, improving operation cycle and preventing low temperature corrosion

Inactive Publication Date: 2016-03-16
衢州佰强新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a fluorine-plastic steel air preheater with anti-corrosion and anti-blocking functions, which can improve the problems existing in the prior art, and can solve the problems of low-temperature corrosion, ash staining and slagging that are prone to occur in traditional steel air preheaters At the same time, it overcomes the disadvantages of fluoroplastic tubes in general plastic heat exchangers, which are prone to vibration and deformation under the action of flue gas erosion due to the thin wall of the tube, which affects the working life and heat transfer performance. It can prevent air preheating Low-temperature corrosion of the device, and the fluoroplastic tube bundle can maintain the original design shape under the scouring of the flue gas, and it is not easy to shake and deform

Method used

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  • Fluoroplastic-steel air preheater with anti-corrosive and anti-blockage functions
  • Fluoroplastic-steel air preheater with anti-corrosive and anti-blockage functions
  • Fluoroplastic-steel air preheater with anti-corrosive and anti-blockage functions

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Effect test

Embodiment 1

[0043] Such as Figure 1-5 As shown, a fluorine-plastic steel air preheater with anti-corrosion and anti-blocking functions includes a number of fluorine-plastic steel pipes 101 arranged in parallel at intervals and two tube sheets 102 respectively arranged at both ends of the fluorine-plastic steel pipe 101. The fluorine-plastic steel The tube 101 is made of a fluoroplastic tube coated with a stainless steel tube. The two ends of the fluoroplastic steel tube 101 are respectively fixedly connected to the tube plate 102 through the tube expansion process. The side wall of the fluoroplastic steel tube 101 faces the preheater Smoke inlet.

[0044] In the present invention, fluorine-plastic coated stainless steel tubes are used to make fluorine-plastic steel tubes, and the fluoroplastics have excellent performances of anti-corrosion and anti-clogging dust on the flue gas side, while the use of stainless steel tubes on the air side can not only enhance the heat transfer performance...

Embodiment 2

[0048] This embodiment is based on Embodiment 1. Preferably, the fluoroplastic tube is made of graphite-added fluoroplastic. Fluoroplastics are made of graphite-added fluoroplastics with high thermal conductivity. This material not only maintains the advantages of general fluoroplastics, such as low adhesion, corrosion resistance, wear resistance, etc., but also has higher thermal conductivity than general fluoroplastics. With high thermal conductivity, it can be made into fluoroplastic tubes with thicker walls, which overcomes the shortcomings of common fluoroplastic tubes, which are easy to shake and deform due to flue gas erosion due to their thin walls, which affects the life of the equipment and the heat exchange effect.

Embodiment 3

[0050] In order to improve the strength and impact resistance of the overall structure, in this embodiment, preferably, brace tubes 103 are arranged between the tube sheets 102, and the two ends of the brace tubes 103 are respectively fixedly connected to the on the tube sheet 102. By setting the brace tube, it can connect and support the two tube sheets, and at the same time support the fluoroplastic steel tube, making the overall structure more stable.

[0051] In this embodiment, preferably, the cross-section of the tube plate 102 is a rectangular structure, and the two ends of the stay tube 103 are respectively fixedly connected to the top corners and the centerlines of the four sides of the two tube plates 102 .

[0052] Further preferably, in this embodiment, in order to prevent the stretching tube from affecting the heat exchange effect of the fluoroplastic steel pipe, preferably, the stretching tube 103 and the fluoroplastic steel pipe 101 are arranged parallel to each...

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Abstract

The invention discloses a fluoroplastic-steel air preheater with anti-corrosive and anti-blockage functions. The fluoroplastic-steel air preheater comprises a plurality of fluoroplastic-steel tubes which are arranged at intervals in parallel and tube plates arranged at the two ends of each fluoroplastic-steel tube respectively, wherein each fluoroplastic-steel tube is produced by coating a fluoroplastic tube with a stainless steel tube; the two ends of each fluoroplastic-steel tube are fixedly connected to the corresponding tube plates through a tube expansion process respectively; and the sidewall of each fluoroplastic-steel tube faces a preheater smoke inlet. The fluoroplastic-steel air preheater disclosed by the invention can solve the easily-caused problems of low-temperature corrosion, ash attachment and slag formation, and the like of the traditional steel air preheaters, and overcomes the defect that fluoroplastic tubes are liable to generate jiggle deformation to influence working life and heat exchange performance under a smoke scouring action due to too thin tube walls in common plastic heat exchangers; and low-temperature corrosion of the air preheater can be prevented, and the fluoroplastic tube bundles can keep the original design shape and are not liable to generate jiggle deformation under the smoke scouring.

Description

technical field [0001] The invention relates to a fluorine-plastic steel air preheater with anti-corrosion and anti-blocking functions, which is used for the replacement and replacement of the last-stage air preheaters at the tails of power plant boilers and various industrial boilers. Background technique [0002] Statistics show that by the end of 2013, my country's annual coal consumption reached 2.475 billion tons of standard coal, oil consumption reached 690 million tons of standard coal, and natural gas consumption reached 217.5 million tons of standard coal. The huge energy consumption puts the entire society and the natural environment under enormous pressure. At the same time, the issue of global climate change has also been put on the political agenda of various countries. In recent years, the issue of carbon emissions in major countries in the world has been Become the main focus of public opinion, the essence of carbon emissions is the issue of energy consumption. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L15/00F28F21/00F28F9/00
CPCF23L15/00F28F9/005F28F21/00F28F2225/00F28F2255/06Y02E20/34
Inventor 朱云峰胡亚才李军俞保云孙志坚余正勇李建平何新建陈屹东
Owner 衢州佰强新材料科技有限公司
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