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A kind of high-radiation ceramic coating for heating furnace tube and its preparation and application method

A technology for ceramic coatings and heating furnaces, applied in reflective/signal coatings, anti-corrosion coatings, coatings, etc., can solve the problems of high energy consumption and short service life, achieve high emissivity, improve service life, and increase heat transfer. Effect

Inactive Publication Date: 2017-06-20
马麟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a high-radiation ceramic coating for heating furnace tubes, which solves the problems of short service life and high energy consumption of coatings for heating furnace tubes in the prior art

Method used

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  • A kind of high-radiation ceramic coating for heating furnace tube and its preparation and application method
  • A kind of high-radiation ceramic coating for heating furnace tube and its preparation and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The invention relates to a high-radiation ceramic coating for heating furnace tubes, which includes component A and component B, component A is a mixture of metal oxides, accounting for 30% of the total amount of the two components; component B is a high temperature resistant adhesive , accounting for 70% of the total.

[0037] Component A is specifically cobalt trioxide, aluminum oxide, manganese dioxide and copper oxide; cobalt trioxide accounts for 25% of the total amount of component A, and aluminum oxide accounts for 10% of the total amount of component A. Manganese dioxide accounts for 30% of the total amount of component A, and copper oxide accounts for 35% of the total amount of component A.

[0038] Component B specifically includes silica sol and additives, wherein silica sol is specifically a 20% aqueous solution of silicon dioxide, and additives specifically include thickeners, anti-sedimentation agents and wetting agents, and additives account for the total...

Embodiment 2

[0040] The invention relates to a high-radiation ceramic coating for heating furnace tubes, which includes component A and component B, component A is a mixture of metal oxides, accounting for 35% of the total amount of the two components; component B is a high temperature resistant adhesive , accounting for 65% of the total.

[0041] Component A is specifically cobalt trioxide, aluminum oxide, manganese dioxide and copper oxide; cobalt trioxide accounts for 35% of the total amount of component A, and aluminum oxide accounts for 20% of the total amount of component A. Manganese dioxide accounts for 20% of the total amount of component A, and copper oxide accounts for 25% of the total amount of component A.

[0042] Component B specifically includes silica sol and additives, wherein silica sol is specifically a 25% silicon dioxide aqueous solution, and additives specifically include thickeners, anti-sedimentation agents and wetting agents, and additives account for the total am...

Embodiment 3

[0044] The invention relates to a high-radiation ceramic coating for heating furnace tubes, which includes component A and component B, component A is a mixture of metal oxides, accounting for 32% of the total amount of the two components; component B is a high temperature resistant adhesive , accounting for 68% of the total.

[0045] Component A is specifically cobalt trioxide, aluminum oxide, manganese dioxide and copper oxide; cobalt trioxide accounts for 28% of the total amount of component A, and aluminum oxide accounts for 18% of the total amount of component A. Manganese dioxide accounts for 24% of the total amount of component A, and copper oxide accounts for 30% of the total amount of component A.

[0046] Component B specifically includes silica sol and additives, wherein silica sol is specifically a 22% silicon dioxide aqueous solution, and additives specifically include thickeners, anti-settling agents and wetting agents, and additives account for the total amount ...

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Abstract

The invention discloses a high radiant ceramic coating for a heating furnace tube as well as a preparation method and a using method thereof. The high radiant ceramic coating for the heating furnace tube comprises a component A and a component B, wherein the component A is a metallic oxide mixture which is 30-35% of the total amount and the component B is a temperature resistant bonder which is 65-70% of the total amount. The high radiant ceramic coating provided by the invention has the functions of anti-high temperature oxidation and anticorrosion, prolongs the service life of the furnace tube, increases the heat transfer on the surface of the furnace tube, increases the heat exchange efficiency, reduces the fuel consumption of the heating furnace and reaches the energy saving purpose; under the condition of not changing the device structure, the high radiant ceramic coating reinforces the radiative transfer, is few in investment, rapid in effect, simple in construction and good for industrial popularization.

Description

technical field [0001] The invention relates to the field of ceramic coatings, in particular to a high-radiation ceramic coating for heating furnace tubes and its preparation and use methods. Background technique [0002] There are nearly one million industrial heating furnaces in my country, and the utilization rate of heat energy is 10-20 percentage points lower than that of foreign countries. In particular, medium and high-temperature heating furnaces are key energy-consuming consumers, and energy conservation and emission reduction are urgently needed. The heat transfer method of medium and high temperature heating furnaces is mainly radiation heat transfer. In the past, high radiation materials such as silicon carbide were used as the main body to prepare coatings. Industrial applications have shown that such coatings are easily oxidized at high temperatures and eroded by alkaline slag. Although it has been improved by adding antioxidants and adopting thin film technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/12C09D5/08C09D5/33B05D7/14B05D3/00B05D3/04
CPCY02P20/10
Inventor 马麟
Owner 马麟
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