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Medium-temperature spray coating material for pipeline

A technology of spraying coatings and pipes, which is applied in the field of refractory materials, can solve the problems of difficult pouring construction methods, reduce transportation output, and increase fluid resistance, so as to improve adhesion rate, strength and oxidation resistance, improve thermal stability, and ensure The effect of smoothness

Inactive Publication Date: 2014-04-30
张婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to reduce fluid resistance, various fluid pipelines are generally cylindrical structures. It is difficult to use formwork and pouring construction methods for this structure. If bricklaying methods are used, various special-shaped bricks will be used, resulting in Construction costs and material costs will increase significantly
[0003] In addition, the existing medium-temperature pipeline spray coatings will cause different volume shrinkage during use, or cause uneven potholes inside the pipeline, which will increase the resistance of the transported fluid and reduce the output of the transport

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Use the ingredients in formula 1, stir evenly for 5 minutes, then spray and apply, and dry and harden naturally within 40 minutes; natural curing for 4 hours. This method can be sprayed quickly without formwork, and has good heat preservation effect, and is resistant to reducing atmosphere, and the cost is also low. After being used in the hot air pipeline, the inside of the pipeline is smooth, with good thermal stability and no cracks. Before using this material, the pipeline The temperature of the outer wall is 250°C. After using this product, the outer wall of the pipe is reduced to 45°C, and the effect is good.

Embodiment 2

[0044] Use the ingredients of formula 2, stir evenly for 5 minutes, then spray and apply, and dry and harden naturally within 30 minutes; natural curing for 3 hours. This method can be sprayed quickly without formwork, and has good heat preservation effect, and is resistant to reducing atmosphere, and the cost is also low. After being used in the hot air pipeline, the inside of the pipeline is smooth, with good thermal stability and no cracks. Before using this material, the pipeline The temperature of the outer wall is 250°C. After using this product, the outer wall of the pipe is reduced to 40°C, and the effect is good.

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PUM

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Abstract

The invention relates to a medium-temperature spray coating material for a pipeline, and belongs to the field of refractory materials. The spray coating material comprises the following components in parts by weight: 38-58 parts of micro-porous light mullite, 3-9 parts of kyanite, 10-20 parts of cement, 20-30 parts of flint clay powder, 5-8 parts of mud from Guangxi, 1-3 parts of CeO2 powder and 1-5 parts of zirconium oxide powder, as well as 0.4 part of paper fiber and 0.5-2 parts of silicon carbide whisker. The spray coating material can be quickly sprayed during use, and is not required to be specially maintained; through the compounding and proportioning of the components, the spray coating material which has a smooth and even surface, has no cracks on the surface, does not shrink, and is good in permeability, and excellent in thermal stability and thermal insulation property can be obtained.

Description

technical field [0001] The invention relates to a medium-temperature pipeline spray coating, which belongs to the field of refractory materials. Background technique [0002] Some pipelines for transporting fluids are required to withstand temperatures below 1200 degrees, and it is also necessary to ensure that the temperature of the transported fluids does not drop. At this time, the direct use of various heat-resistant steels will not only cause oxidation and corrosion of various heat-resistant steels and reduce the service life of the pipeline, but also cause a large amount of heat to be dissipated into the air, resulting in a decrease in the temperature of the fluid being transported, which will lead to a failure to comply with the requirements Fluid temperature mismatches cause production difficulties and waste energy. Therefore, in order to prevent pipeline erosion, a layer of insulation material is generally used. In addition, in order to reduce fluid resistance, va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 张婷
Owner 张婷