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Titanium tube for coil-tube heat exchanger

A heat exchanger and coil type technology, which is applied in the field of titanium tubes for coil heat exchangers, can solve the problems of unsatisfactory surface finish and achieve excellent anti-oxidation and good surface finish

Inactive Publication Date: 2018-01-23
CHANGSHU OUDI PIPE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing titanium tubes for coil heat exchangers include the main body of the titanium tube, but the anti-oxidation, abrasion resistance, corrosion resistance, heat resistance, cold resistance, and weather resistance of the titanium tube body need to be improved, and the surface finish is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A titanium tube for a coil heat exchanger, which includes a titanium tube body, the titanium tube body is passivated, and the passivation process includes the following steps:

[0026] 1) Put 1-2 parts by weight of polyoxyethylene ether, 0.7 parts by weight of sodium molybdate, 0.6 parts by weight of calcium borate, 1.1 parts by weight of tetraacetylethylenediamine, and 1.7 parts by weight of sodium oleoyl amino acid into 25 parts by weight of deionized water , stir evenly;

[0027] 2) Add 0.9 parts by weight of silicon-calcium powder, 1.3 parts by weight of hydroxyethyl cellulose, 2.1 parts by weight of sulfated castor oil, 1.5 parts by weight of morpholine borate, and 1.3 parts by weight of benzotriazole, and continue stirring until fully Mix evenly to obtain a passivation treatment solution;

[0028] 3) Put the main body of the titanium tube into the passivation treatment solution for passivation treatment, the treatment temperature is 50°C, and the treatment time i...

Embodiment 2

[0030] A titanium tube for a coil heat exchanger, which includes a titanium tube body, the titanium tube body is passivated, and the passivation process includes the following steps:

[0031] 1) Put 1 part by weight of polyoxyethylene ether, 0.7 parts by weight of sodium molybdate, 0.6 parts by weight of calcium borate, 1.1 parts by weight of tetraacetylethylenediamine, and 1.7 parts by weight of sodium oleoyl amino acid into 25 parts by weight of deionized water, and stir Uniform;

[0032] 2) Add 0.9 parts by weight of silicon-calcium powder, 1.3 parts by weight of hydroxyethyl cellulose, 2.1 parts by weight of sulfated castor oil, 1.5 parts by weight of morpholine borate, and 1.3 parts by weight of benzotriazole, and continue stirring until fully Mix evenly to obtain a passivation treatment solution;

[0033] 3) Put the main body of the titanium tube into the passivation treatment solution for passivation treatment, the treatment temperature is 50°C, and the treatment time ...

Embodiment 3

[0035] A titanium tube for a coil heat exchanger, which includes a titanium tube body, the titanium tube body is passivated, and the passivation process includes the following steps:

[0036] 1) Put 2 parts by weight of polyoxyethylene ether, 0.7 parts by weight of sodium molybdate, 0.6 parts by weight of calcium borate, 1.1 parts by weight of tetraacetylethylenediamine, and 1.7 parts by weight of sodium oleoylamino acid into 25 parts by weight of deionized water, and stir Uniform;

[0037] 2) Add 0.9 parts by weight of silicon-calcium powder, 1.3 parts by weight of hydroxyethyl cellulose, 2.1 parts by weight of sulfated castor oil, 1.5 parts by weight of morpholine borate, and 1.3 parts by weight of benzotriazole, and continue stirring until fully Mix evenly to obtain a passivation treatment solution;

[0038] 3) Put the main body of the titanium tube into the passivation treatment solution for passivation treatment, the treatment temperature is 50°C, and the treatment time ...

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PUM

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Abstract

The invention discloses a titanium tube for a coil-tube heat exchanger. The titanium tube comprises a titanium tube body, and the titanium tube body is subject to passivating treatment. The passivating treatment comprises the following steps: (1) sequentially putting 1-2 parts by weight of polyoxyethylene ether, 0.7 part by weight of sodium molybdate, 0.6 part by weight of calcium borate, 1.1 parts by weight of tetraacetylethylenediamine, and 1.7 parts by weight of oleoyl amino acid sodium into 25 parts by weight of deionized water, and stirring uniformly; (2) then, sequentially putting 0.9 part by weight of silicate-calcium powder, 1.3 parts by weight of hydroxyethyl cellulose, 2.1 parts by weight of sulfated castor oil, 1.5 parts by weight of boric acid morpholine and 1.3 parts by weightof benzotriazole, and continuing to stir till all the substances are sufficiently and uniformly mixed, so as to obtain a passivating treatment solution; and (3) putting the titanium tube body in thepassivating treatment solution for 30 seconds' passivating treatment at 50 DEG C, and taking out the treated titanium tube body for drying. As the titanium tube body of the titanium tube disclosed bythe invention is subject to passivating treatment, the properties of the titanium tube body are good and the surface smoothness of the titanium tube body is high.

Description

technical field [0001] The invention relates to a titanium tube for a coil heat exchanger. Background technique [0002] The existing titanium tubes for coil heat exchangers include the main body of the titanium tube, but the anti-oxidation, abrasion resistance, corrosion resistance, heat resistance, cold resistance, and weather resistance of the titanium tube body need to be improved, and the surface finish is not ideal. Contents of the invention [0003] The purpose of the present invention is to provide a titanium tube for coil heat exchanger, the main body of the titanium tube is passivated, and a uniform passivation protective film is formed on the surface, which has excellent oxidation resistance, abrasion resistance, corrosion resistance and heat resistance. , cold resistance, weather resistance, and good surface finish. [0004] In order to achieve the above object, the technical solution of the present invention is to design a titanium tube for a coil heat exchan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/68F28F19/02F28F21/08
Inventor 王昱丰
Owner CHANGSHU OUDI PIPE IND CO LTD
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