CN102182878A - Novel corrosion-resistant composite tube - Google Patents
Novel corrosion-resistant composite tube Download PDFInfo
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- CN102182878A CN102182878A CN 201110114137 CN201110114137A CN102182878A CN 102182878 A CN102182878 A CN 102182878A CN 201110114137 CN201110114137 CN 201110114137 CN 201110114137 A CN201110114137 A CN 201110114137A CN 102182878 A CN102182878 A CN 102182878A
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- enamel coating
- coating
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- film layer
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Abstract
The invention provides a novel corrosion-resistant composite tube, which comprises a tube body, and is characterized in that: an enamel coating is coated on the surface of the tube body; and a fluoroplastic thin film layer is coated on the surface of the enamel coating. The invention has the advantages that: due to the enamel coating and the plastic coating, dual effective protection can be realized; the plastic layer particularly can effectively prevent corrosive gases, such as hydrofluoric acid and/or sulfuric acid, and the enamel coating below the plastic layer can be prevented from being damaged; and corrosive substances which can pass through the plastic layer to diffuse can be effectively blocked by the enamel coating; therefore, a steel pipeline below the enamel coating can be prevented from being corroded, and the influence on heat exchange efficiency of a tube bundle is low.
Description
Technical field
The present invention relates to a kind of anticorrosion composite pipe that is used to make heater.
Background technique
Present heat-exchange device is used for etchant gas and moves, and generally adopts plate type heat exchanger and regenerative heat exchanger.The steel pipe bundle that is used for heat exchanger components is made the following three kinds of methods that adopt usually:
First kind, the steel pipe bundle of heat exchanger components surface plating enamel.Though enamel coating can be resisted most of composition in the corrosive fume, also can be had highly acid chemical substance and be destroyed, as the etching acid of sulfuric acid and/or condensation.
Second kind, adopt on the steel pipe bundle of heat exchanger components surface and to add the thin plastic pellicle of last layer, must adopt fluorine-containing plastics when particularly temperature reaches 250 ℃, though the plastic coating on steel surface can be resisted the acidic materials that exist in the smog, but also there is shortcoming, for example these materials of water and carbon dioxide can permeate by plastics, then arrive the steel surface, condensation then, thus the steel top layer is corroded.
The third, adopt the tube bank of pure plastic production to carry out heat exchange, adopt the plastics of fluoride when especially temperature reaches 250 ℃, because the mechanical strength of plastics is low, in order to guarantee the crushing resistance of pipeline, must increase the wall thickness of pipeline, but will influence the heat exchange efficiency of tube bank like this, and the price of fluoroplastic is very expensive.
Therefore, above-mentioned three kinds of methods heat exchanger pipe bundle structure of making can't make the corrosion flue gas therein reliably, operation safely.
Summary of the invention
The purpose of this invention is to provide a kind of tube bank that is used to make heat exchanger that can effectively resist the corrosion flue gas.
In order to achieve the above object, technological scheme of the present invention has provided a kind of novel anticorrosion composite pipe, comprises body, it is characterized in that, in the surface-coated of body one deck enamel coating is arranged, and in the surface-coated of enamel coating one deck fluorine plastic film layer is arranged.
Further, the layer thickness of described enamel coating and described fluorine plastic film layer is all at 2 microns to 0.7 millimeter.
Described enamel coating is made by PFA or PTFE.
Advantage of the present invention is: can realize dual effective protection by enamel and these two coatings of plastics.Plastic layer especially can effectively stop subversive gas, as etching acid and/or sulfuric acid, prevents that following enamel coating is destroyed.And can pass the corrosive material of plastic layer diffusion, and but can be stopped by enamel coating effectively, be positioned at following steel pipeline and be not corroded with regard to protecting like this.Little to the heat exchange efficiency influence of tube bank simultaneously.
Description of drawings
Fig. 1 is a kind of novel anticorrosion composite pipe structural representation provided by the invention.
Embodiment
For the present invention is become apparent, now with a preferred embodiment, and conjunction with figs. is described in detail below.
As shown in Figure 1, be a kind of novel anticorrosion composite pipe provided by the invention, comprise that body 1 has one deck enamel coating 2 in the surface-coated of body 1, one deck fluorine plastic film layer 3 is arranged in the surface-coated of enamel coating 2.Wherein, the layer thickness of enamel coating 2 and fluorine plastic film layer 3 is all at 2 microns to 0.7 millimeter.
In the present invention, scribble enamel coating 2 and fluorine plastic film layer 3 simultaneously on body 1 surface.When the material of these two coatings overlapped each other use like this, the acidic materials that spread by 3 infiltration of fluorine plastic film layer can not cause corrosion to enamel coating 2, and can produce the material of corrosion to enamel coating 2, can not pass through 3 diffusion of fluorine plastic film layer.These two coatings are attached to the outside of steel pipeline because have only its top layer can with have rodent gas and contact.In contrast, the internal surface of steel pipe bundle does not need barrier coating, because its internal circulation is that the non-corrosiveness medium is for example as water or water vapour.
Material as enamel coating 2 can adopt the enamel coating material that is similar to the glass proterties commonly used.As silica sand or feldspar, diboron trioxide, phosphorus pentoxide, aluminium sesquioxide, PBO etc. perhaps can improve it at metal surface adhesion based on the cobalt/cobalt oxide or the enamel coating of nickel oxide simultaneously.
The material of fluorine plastic film layer 3 is selected acid resistance and resistant to elevated temperatures plastics.
Be coated with at steel pipe top layer enameling and should avoid pore as far as possible.When making steel pipe, at first be coated with, subsequently the plastic covering layer with enamel coating.
The layer thickness of enamel coating 2 and fluorine plastic film layer 3 all arrives in about 0.7 millimeter this scope at several microns.Two coatings also can be same bed thickness.The layer thickness of enamel coating 2 can be extremely thin, because it is only as the corrosion resistance coating.
Claims (3)
1. a novel anticorrosion composite pipe comprises body (1), it is characterized in that, in the surface-coated of body (1) one deck enamel coating (2) is arranged, and in the surface-coated of enamel coating (2) one deck fluorine plastic film layer (3) is arranged.
2. a kind of novel anticorrosion composite pipe as claimed in claim 1 is characterized in that, the layer thickness of described enamel coating (2) and described fluorine plastic film layer (3) is all at 2 microns to 0.7 millimeter.
3. a kind of novel anticorrosion composite pipe as claimed in claim 1 is characterized in that described enamel coating (2) is made by PFA or PTFE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110114137 CN102182878A (en) | 2011-05-04 | 2011-05-04 | Novel corrosion-resistant composite tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110114137 CN102182878A (en) | 2011-05-04 | 2011-05-04 | Novel corrosion-resistant composite tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102182878A true CN102182878A (en) | 2011-09-14 |
Family
ID=44569141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110114137 Pending CN102182878A (en) | 2011-05-04 | 2011-05-04 | Novel corrosion-resistant composite tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102182878A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775759A (en) * | 2012-10-19 | 2014-05-07 | 株式会社富士金 | Pipe joint |
| CN104209251A (en) * | 2014-08-19 | 2014-12-17 | 南京正源搪瓷设备制造有限公司 | Manufacturing method for fluorine plastic injection outside glass lining workpiece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2408341Y (en) * | 2000-03-27 | 2000-11-29 | 顾太章 | Steel super long enamelled anti-corrosion pipeline |
| CN2465020Y (en) * | 2001-01-22 | 2001-12-12 | 宋煌 | Enamelled pipe |
| CN2511087Y (en) * | 2001-10-15 | 2002-09-11 | 张若海 | Corrosion-resisting adhesive-resisting electric-heating tube |
| DE10307098B3 (en) * | 2003-02-19 | 2004-02-19 | Plasticon Germany Gmbh | Composite heat exchange pipe has a metal pipe and a heat-conductive substance between an enamel cladding and a plastics mantle in a structure which withstands corrosion and pressure and high temperatures |
| CN201462238U (en) * | 2009-04-10 | 2010-05-12 | 王莘 | Interior porcelain enamel steel butt welding pipe fitting |
| CN202032237U (en) * | 2011-05-04 | 2011-11-09 | 上海瑞亚安环保设备有限公司 | Novel corrosion-preventing composite pipe |
-
2011
- 2011-05-04 CN CN 201110114137 patent/CN102182878A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2408341Y (en) * | 2000-03-27 | 2000-11-29 | 顾太章 | Steel super long enamelled anti-corrosion pipeline |
| CN2465020Y (en) * | 2001-01-22 | 2001-12-12 | 宋煌 | Enamelled pipe |
| CN2511087Y (en) * | 2001-10-15 | 2002-09-11 | 张若海 | Corrosion-resisting adhesive-resisting electric-heating tube |
| DE10307098B3 (en) * | 2003-02-19 | 2004-02-19 | Plasticon Germany Gmbh | Composite heat exchange pipe has a metal pipe and a heat-conductive substance between an enamel cladding and a plastics mantle in a structure which withstands corrosion and pressure and high temperatures |
| CN201462238U (en) * | 2009-04-10 | 2010-05-12 | 王莘 | Interior porcelain enamel steel butt welding pipe fitting |
| CN202032237U (en) * | 2011-05-04 | 2011-11-09 | 上海瑞亚安环保设备有限公司 | Novel corrosion-preventing composite pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775759A (en) * | 2012-10-19 | 2014-05-07 | 株式会社富士金 | Pipe joint |
| CN104209251A (en) * | 2014-08-19 | 2014-12-17 | 南京正源搪瓷设备制造有限公司 | Manufacturing method for fluorine plastic injection outside glass lining workpiece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110914 |