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Plate of corrosion-resistant plate heat exchanger and corrosion-resistant treatment method of plate

A technology for anti-corrosion treatment and heat exchangers, applied in heat exchange equipment, lighting and heating equipment, laminated components, etc., can solve problems such as corrosion, and achieve the effects of simple manufacturing, improved erosion resistance and stable performance

Active Publication Date: 2019-03-19
HEIMDALLR SHANGHAI ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a plate and a Its anti-corrosion treatment method

Method used

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  • Plate of corrosion-resistant plate heat exchanger and corrosion-resistant treatment method of plate
  • Plate of corrosion-resistant plate heat exchanger and corrosion-resistant treatment method of plate
  • Plate of corrosion-resistant plate heat exchanger and corrosion-resistant treatment method of plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A fluorine-sprayed anti-corrosion plate heat exchanger plate

[0045] (1) Surface pretreatment: pickling the newly pressed 304 stainless steel sheet with a thickness of 0.5 mm in an aqueous oxalic acid solution with a mass fraction of 40%, adding dodecylbenzenesulfonate with a concentration of 10g / L soaking and stirring in sodium phosphate aqueous solution, and after natural drying, the surface of the plate will appear glossy.

[0046] (2) Mix polyvinyl alcohol, ethanol, deionized water, xylene and talcum powder at a mass ratio of 30:40:5:15:10, put them in an oven, bake at 100°C for 180 minutes, and grind them into powder , use a sieve to filter the solid powder below 200-300 mesh, spray it on the surface of the pretreated plate by electrostatic powder spraying method, and dry it at room temperature. The specific parameters of electrostatic powder spraying are as follows: electrostatic voltage 65kV, air supply pressure 10pa , the electrical circuit entering the powder...

Embodiment 2

[0053] A fluorine-sprayed anti-corrosion plate heat exchanger plate

[0054] (1) Surface pretreatment: pickling the newly pressed 316L stainless steel sheet with a thickness of 0.5mm in an aqueous oxalic acid solution with a mass fraction of 50%, adding dodecylbenzenesulfonate with a concentration of 3g / L soaking and stirring in sodium phosphate aqueous solution, and after natural drying, the surface of the plate will appear glossy.

[0055] (2) Mix polyvinyl alcohol, ethanol, deionized water, xylene and talcum powder at a mass ratio of 30:50:5:5:10, put them in an oven, bake at 100°C for 180min, and grind them into powder , obtain solid powder below 200~300 meshes by sieve filtration, adopt electrostatic powder spraying method (parameters are the same as embodiment 1) to spray to the sheet surface after pretreatment, adopt GB1764-79 standard, lever micrometer method measures spraying thickness, spraying The thickness is 15 μm.

[0056] (3) Grind polytetrafluoroethylene into...

Embodiment 3

[0062] A fluorine-sprayed anti-corrosion plate heat exchanger plate

[0063] (1) Surface pretreatment: pickling the newly pressed 304 stainless steel sheet with a thickness of 0.6 mm in an aqueous oxalic acid solution with a mass fraction of 30%, adding dodecylbenzenesulfonate with a concentration of 5g / L soaking and stirring in sodium phosphate aqueous solution, and after natural drying, the surface of the plate will appear glossy.

[0064] (2) Mix polyvinyl alcohol, ethanol, deionized water, xylene and talcum powder at a mass ratio of 30:35:5:15:15, put them in an oven, bake at 100°C for 180 minutes, and grind them into powder , obtain solid powder below 200~300 meshes by sieve filtration, adopt electrostatic powder spraying method (parameters are the same as embodiment 1) to spray to the sheet surface after pretreatment, adopt GB1764-79 standard, lever micrometer method measures spraying thickness, spraying The thickness is 20 μm.

[0065] (3) Grind polytetrafluoroethylen...

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Abstract

The invention belongs to the technical field of corrosion resistance of plate heat exchangers, and provides a plate of a corrosion-resistant plate heat exchanger and a corrosion-resistant treatment method of the plate. A binding layer and a corrosion-resistant layer are sequentially sprayed on the surface of the plate; the binding layer is prepared from polyvinyl alcohol, xylene and talcum powder,wherein the mass ratio of the polyvinyl alcohol to the xylene to the talcum powder is 30:(5 to 10):(10 to 15). According to the corrosion-resistant plate heat exchanger, the surface of the plate andthe surface corrosion-resistant layer are tightly bound by the binding layer, so that the plate has the excellent property of acid-alkali corrosion resistance. The corrosion-resistant treatment methodhas the characteristics that the material price is low, manufacturing is easy and the property is stable.

Description

technical field [0001] The invention relates to a plate of an anti-corrosion plate heat exchanger and an anti-corrosion treatment method thereof. Background technique [0002] At present, plate heat exchangers have been widely used in shipbuilding industry, paper industry, construction industry, food processing plants, printing and dyeing industry, heating ventilation and air conditioning, pharmaceutical industry, electric power industry, steel industry and other industries. Plate heat exchangers It has the characteristics of high heat transfer efficiency, small heat loss, small resistance, small footprint, easy maintenance and low investment. As plate heat exchangers are used more and more widely in industry, the requirements for plate heat exchangers are getting higher and higher, especially in chemical companies and steel environmental protection industries, the medium in contact with plate heat exchangers is highly corrosive , Ordinary 304 stainless steel can no longer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F3/00F28F19/04
CPCF28F3/00F28F19/04
Inventor 赵怀超白亮马元
Owner HEIMDALLR SHANGHAI ENERGY SAVING TECH
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