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High-temperature resistant absorption enhancement nano coating and preparation method thereof

A technology of enhanced absorption and nano-coating, applied in the direction of radiation-absorbing coatings and coatings, can solve problems such as unstable performance, low blackness of metal process pipelines, and low emissivity of coatings, and achieve excellent thermal shock resistance, Guarantees the effect of long-term stability and high normal emissivity

Active Publication Date: 2012-09-19
上海乐恒石油化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, in heating furnaces used in petrochemical, thermal power plants, etc., the blackness of the metal process pipeline surface in the furnace is between 0.3-0.6. Due to the high temperature in these heating furnaces, heat is mainly transferred by radiation heat transfer. Metal process The blackness of the pipeline itself is low, which affects the heat absorption efficiency; and the metal is easily oxidized and coked under the long-term erosion of the high temperature and flue gas in the furnace, which affects the absorption of heat. This is also the reason why the average thermal efficiency of domestic furnaces is currently low. reason
[0004] In recent years, the application of high-temperature resistant and enhanced absorption nano-coatings in kilns has been widely recognized. The layer cracks and falls off, which affects the use effect and service life
On the other hand, some current coatings have low emissivity or unstable performance at high temperatures, and the problem of performance attenuation occurs in a short period of time, and the actual benefits of the application are not ideal

Method used

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  • High-temperature resistant absorption enhancement nano coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Coating composition ratio:

[0018] 6 parts of titanium dioxide, 0.8 parts of iron oxide, 9 parts of zinc oxide, 4 parts of manganese dioxide, 4 parts of chromium trioxide, 6 parts of cesium oxide, 4 parts of magnesium oxide, 3 parts of calcium carbonate, 10 parts of metallic silver, phosphorus pentoxide 12 parts, 3 parts of luminescent powder, 3.5 parts of light stabilizer, 3 parts of photoinitiator, 4 parts of ultraviolet absorber, 3.5 parts of antioxidant, 11 parts of cobalt oxide, 4 parts of tungsten gold powder, 3 parts of silicon powder, 3 parts of barium powder , Potassium 0.9, dispersant 0.3, nano-ceramic 2 parts, wherein the particle size of each solid component is not less than 850 mesh.

[0019] The paint is prepared according to the proportion of the formula, and the product is obtained after grinding, soaking, heating reaction, stirring, mixing, filtering, sampling, and testing.

[0020] Thermal shock stability: according to JB / T 3648.1-1994 standard, unde...

Embodiment 2

[0027] Coating composition ratio:

[0028] 7 parts of titanium dioxide, 0.8 parts of iron oxide, 10 parts of zinc oxide, 3 parts of manganese dioxide, 5 parts of chromium trioxide, 5.5 parts of cesium oxide, 4.5 parts of magnesium oxide, 3 parts of calcium carbonate, 11 parts of metallic silver, phosphorus pentoxide 10 parts, 3 parts of luminescent powder, 2.5 parts of light stabilizer, 4 parts of photoinitiator, 3 parts of ultraviolet absorber, 3.5 parts of antioxidant, 12 parts of cobalt oxide, 3.5 parts of tungsten gold powder, 3.5 parts of silicon powder, 2.5 parts of barium powder , Potassium 0.9, dispersant 0.8, nano-ceramics 1 part, wherein the particle size of each solid component is not less than 850 mesh.

[0029] The ingredients are listed according to the proportion of the formula, and the product is obtained after grinding, soaking, heating reaction, stirring, mixing, filtering, sampling, and testing.

[0030] Thermal shock stability: according to JB / T 3648.1-199...

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Abstract

The invention provides a high-temperature resistant absorption enhancement nano coating and a preparation method and application thereof. The coating comprises metallic stuffing, metal oxides, nano ceramic, oxidant and adhesive. The coating is characterized in that the metallic stuffing comprises metallic silver, tungsten powder, barium powder and potassium; the metal oxides comprise titanium dioxide, ferric oxide, zinc oxide, manganese dioxide, chromium trioxide, cesium oxide and magnesium oxide; the adhesive comprises phosphate and silicate; and the oxidant is aluminum oxide. The preparation method comprises the following steps of: proportioning according to the proportion of the coating components, polishing, soaking, heating, reacting, stirring, mixing and filtering.

Description

technical field [0001] The invention belongs to the field of inorganic coatings, in particular to a high-temperature-resistant enhanced-absorption nano coating coated on metal process pipelines and a preparation method thereof. Background technique [0002] Industrial furnaces are the largest energy consumers in my country, accounting for about 25-40% of the total energy consumption, while the average thermal efficiency of furnaces is only about 30%. Low thermal efficiency of industrial furnaces is a common problem at home and abroad. High temperature resistant and enhanced absorption nano coatings As an energy-saving new technology in the kiln, coating on the metal process pipeline in the kiln can effectively improve the blackness of the surface of the metal process pipeline, strengthen the absorption of radiant heat by the metal process pipeline, and make full use of energy. In order to achieve the purpose of energy saving. [0003] Generally, in heating furnaces used in pe...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/32
Inventor 张春雨
Owner 上海乐恒石油化工集团有限公司
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