CN1320664A - High-temp protecting paint for furnace tubes - Google Patents
High-temp protecting paint for furnace tubes Download PDFInfo
- Publication number
- CN1320664A CN1320664A CN 01110665 CN01110665A CN1320664A CN 1320664 A CN1320664 A CN 1320664A CN 01110665 CN01110665 CN 01110665 CN 01110665 A CN01110665 A CN 01110665A CN 1320664 A CN1320664 A CN 1320664A
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- parts
- temp
- furnace tubes
- kaolin
- stanley
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Abstract
A high-temp paint for protecting furnace tubes is prepared from powdered kyanite, cobalt oxide, silicon nitride, zirconium oxide, rare-earth, kaolinite, etc through mixing them in efficient inorganic binder. Its advantages are high antiwear and high-temp resistance, high adhesion, thermal conductivity and chemical stability, and long service life (3 years or longer).
Description
The present invention relates to a kind of high-temp protecting paint for furnace tubes, relate to a kind of composite coating that is mixed with the prescription uniqueness that forms by multiple inorganics and nonmetallic wear-resistant material specifically.
At present, the water wall tube metal that is arranged in the furnace flame central section in the boiler contacts the high temperature corrosion that water wall tube can take place with the sulfur contained high temoperature flue gas; When using the more coal of component contents such as K, Na, S, the K in the black dirt
2SO
4And Na
2SO
4SO is being arranged
3Flue gas in can and the effect of superheater tube sub-surface ferric oxide form metal composite vitriol K
2Fe (SO
4)
3And Na
3Fe (SO
4)
3This complex vitriolate is fused into liquid state in 550-71 ℃ of scope, intensive corrodibility is arranged, and corrosion is the most serious when wall temperature is 600-700 ℃.For a long time both at home and abroad all in this way to solve the problem of research, the technology of comparative maturity exist again cost height, wear-resisting time short, under user mode problem such as constructional difficulties.My company and the joint study of how tame institution of higher learning through failure many times, are invented out HTEE series non-type high-temp protecting paint for furnace tubes finally for many years, have solved a great problem of this long-term puzzlement power industry.
The object of the present invention is to provide a kind of is a kind of high-temp protecting paint for furnace tubes that high-wearing feature and chemical stability are arranged of raw material by multiple inorganics and nonmetallic wear-resistant material; it is coated in the boiler tube surface and can avoids flue gas to contact with the direct of boiler tube steel; thereby effectively prevent above-mentioned corrosion; play the effect of protection boiler tube; thereby, can be widely used in the industries such as electric power, metallurgy, oil, chemical fertilizer, chemical industry to meet the need of market.
The object of the present invention is achieved like this: it is made up of aquamaine stone flour, cobalt oxide, Stanley stone, silicon nitride, zirconium white, rare earth and kaolin, form through in the efficient inorganic tackiness agent, being mixed with, it is characterized in that it is a kind of high-temp protecting paint for furnace tubes that is prepared from by the following weight proportion raw material; Aquamaine stone flour 8-12 part cobalt oxide 8-12 part Stanley stone 4-6 part silicon nitride 18-22 part zirconium white 23-27 part rare earth 18-22 part kaolin 8-12 part.
Wherein the weight proportion of preferred raw material is; 10 parts of 20 parts of kaolin of 25 parts of rare earths of 20 parts of zirconium whites of 5 parts of silicon nitrides of 10 parts of Stanley stones of 10 parts of cobalt oxides of aquamaine stone flour.
Wherein, the efficient inorganic tackiness agent is that 85 phosphoric acid and aluminium hydroxide are heated to 100 ℃ and form.
The present invention compared with prior art, and is wear-resistant, and 5-20 μ m flying dust 100m/s washes away 10000 no noticeable wears; High temperature resistant, life-time service does not have softening under 1800 ℃ of high temperature; Heat conductivility is good, and its thermal conductivity and Cr5Mo are suitable, and linear expansivity is suitable with the 20# steel; Chemical property is stable, under normal temperature or the high temperature not can with coal, oil, gas generation chemical reaction; Cohesive force is strong, and the magnetization protective layer that forms after temperature surpasses 500 ℃ does not have be full of cracks, obscission; Long service life, technical guarantee work-ing life is 3 years, actually uses 4 years no changes; Coat-thickness requires to reach 2mm-3mm according to the Party A.
Further specify the present invention below in conjunction with embodiment
The present invention is made up of aquamaine stone flour, cobalt oxide, Stanley stone, silicon nitride, zirconium white, rare earth and kaolin.
Embodiment 1
Take by weighing aquamaine stone flour 10kg, cobalt oxide 10kg, Stanley stone 5kg, silicon nitride 10kg, zirconium white 25kg, rare earth 20kg and kaolin 10kg.Stir with the dilution of commercial three aluminum hydride viscose binders and to be muddy and promptly to get a kind of high-temp protecting paint for furnace tubes.Its main technical details is: unit weight 3000kg/m3; 4-6Mpa under compressive strength sclerosis back 12-15Mpa, the maximum operating temperature; 2100 ℃ of refractoriness; 1800 ℃ of maximum operating temperatures; Linear expansivity 11.5 * 10-61/K; Thermal conductivity 33.5W/m.K; Remaining linear shrinkage ratio 0.0007 (1400 ℃, 2h).
Constructional method: remove matrix surface rusty stain, floating dust, oxide skin etc., expose the metal true qualities, will be mixed into the coating of gelationus powder and tackiness agent before smearing by a certain percentage, thickness is on request smeared once shaped by hand and is got final product.The normal temperature maintenance just can heat up by the boiler heating curve subsequently to surface drying, reaches 500 ℃ and just can form rigid shell.Attention: can only stir 30 minutes usage quantity at every turn, can not vibrate after the construction for the first time, soak, sharply heat up.
Claims (2)
1, a kind of high-temp protecting paint for furnace tubes, it is made up of aquamaine stone flour, cobalt oxide, Stanley stone, silicon nitride, zirconium white, rare earth and kaolin, form through in the efficient inorganic tackiness agent, being mixed with, it is characterized in that it is a kind of high-temp protecting paint for furnace tubes that is prepared from by the following weight proportion raw material; Aquamaine stone flour 8-12 part cobalt oxide 8-12 part Stanley stone 4-6 part silicon nitride 18-22 part zirconium white 23-27 part rare earth 18-22 part kaolin 8-12 part.
2, a kind of high temperature abrasion material according to claim 1 is characterized in that the weight proportion of raw material is; 10 parts of 20 parts of kaolin of 25 parts of rare earths of 20 parts of zirconium whites of 5 parts of silicon nitrides of 10 parts of Stanley stones of 10 parts of cobalt oxides of aquamaine stone flour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01110665 CN1320664A (en) | 2001-04-16 | 2001-04-16 | High-temp protecting paint for furnace tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01110665 CN1320664A (en) | 2001-04-16 | 2001-04-16 | High-temp protecting paint for furnace tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1320664A true CN1320664A (en) | 2001-11-07 |
Family
ID=4658742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01110665 Pending CN1320664A (en) | 2001-04-16 | 2001-04-16 | High-temp protecting paint for furnace tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1320664A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277474A (en) * | 2011-08-08 | 2011-12-14 | 河南三兴热能技术有限公司 | Heat treatment metal workpiece surface antioxidation coating |
| CN102775164A (en) * | 2012-07-30 | 2012-11-14 | 北京法耳迈特科技有限责任公司 | Energy-saving modified coating and preparation method for boiler water cooled wall |
-
2001
- 2001-04-16 CN CN 01110665 patent/CN1320664A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277474A (en) * | 2011-08-08 | 2011-12-14 | 河南三兴热能技术有限公司 | Heat treatment metal workpiece surface antioxidation coating |
| CN102775164A (en) * | 2012-07-30 | 2012-11-14 | 北京法耳迈特科技有限责任公司 | Energy-saving modified coating and preparation method for boiler water cooled wall |
| CN102775164B (en) * | 2012-07-30 | 2015-04-01 | 北京中电联发科技有限公司 | Energy-saving modified coating and preparation method for boiler water cooled wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zeng Hongyuan Document name: Deemed as a notice of withdrawal |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |