Nanocomposite and nanocomposite furnace tube

A nano-composite material and nano-composite technology, applied in the field of nano-composite furnace tubes, can solve the problems of reducing service life, high-temperature corrosion of furnace tubes, and reducing thermal efficiency, etc., and achieve the effects of preventing coking and heat resistance, saving energy, and simple construction technology

Active Publication Date: 2014-08-06
CHAOYANG ATT ELECTRIC POWER ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production and operation of small boilers, large power plant boilers, and petroleum and petrochemical heating furnaces in China, the furnace tubes are often in high temperature, high pressure or medium pressure, and acid or alkali harsh working environments, so high temperature corrosion and contamination of furnace tubes are common. Problems such as slagging not only greatly reduce the thermal efficiency, lose a lot of energy, but also shorten the service life, and there are also potential safety hazards

Method used

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  • Nanocomposite and nanocomposite furnace tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1 A nanocomposite material and nanocomposite furnace tube

[0010] (1) Composition of nanocomposites

[0011]

[0012] Water glass is used as the adhesive in this embodiment, and water-soluble acrylic resin, styrene-acrylic emulsion or water-soluble silicone resin can also be used.

[0013] (2) Nano composite furnace tube

[0014] The preparation method is as follows: 1) treating the surface of the furnace tube to a certain roughness;

[0015] 2) According to the above proportioning ratio, the nanocomposite material is mixed evenly;

[0016] 3) The nanocomposite material is sprayed onto the surface of the furnace tube, and the thickness is checked with a thickness gauge, which is no more than 30-55 microns;

[0017] 4) Burning the sprayed furnace tube at 500° C. for 2-3 hours to obtain a furnace tube covered with nanocomposite material.

[0018] (3) Effect experiment

[0019] It is used in a heat-conducting oil furnace in a chemical plant. The furnace te...

Embodiment 2

[0020] Example 2 A nanocomposite material and nanocomposite furnace tube

[0021] (1) Composition of nanocomposites

[0022]

[0023] In this embodiment, water-soluble acrylic resin is used as the adhesive, and water glass, styrene-acrylic emulsion or water-soluble silicone resin can also be used.

[0024] (2) Nano composite furnace tube

[0025] The preparation method is as follows: with embodiment 1.

[0026] (3) Effect experiment

[0027] In a power plant in Xinjiang, the units with ordinary furnace tubes suffered serious corrosion, serious contamination and slagging, and decreased energy efficiency and output. After adopting the nanocomposite material furnace tube of the present invention, the furnace temperature was 1300°C, the output was increased by 5%, and coal was saved by 3 %, after one year of operation, there is no contamination and slagging problem, which improves the operating safety of the unit.

Embodiment 3

[0028] Example 3 A nanocomposite material and nanocomposite furnace tube

[0029] (1) Composition of nanocomposites

[0030]

[0031] In this embodiment, the adhesive is styrene-acrylic emulsion, and water glass, water-soluble acrylic resin or water-soluble silicone resin can also be used.

[0032] (2) Nano composite furnace tube

[0033] The preparation method is as follows: with embodiment 1.

[0034] (3) Effect experiment

[0035] The steam injection furnace of a special oil station in PetroChina, the unit with ordinary furnace tubes, has serious coking, increased thermal resistance, and decreased. After adopting the nanocomposite material furnace tube of the present invention, the furnace temperature is 1000 ° C, the output is increased, and the coal saving rate is 8.3%. , After 2 years of operation, no coking problem occurs, saving a lot of fuel.

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Abstract

The invention relates to a nanocomposite and a nanocomposite furnace tube. The nanocomposite is used for solving the problems of high-temperature corrosion, wear resistance, sticking pollution and slag formation resistance and low heat transfer efficiency of the furnace tube. According to the technical scheme, the designed nanocomposite prepared from different proportions of a binder, borax, silicon dioxide, zinc oxide, zirconium oxide, cerium oxide, aluminum oxide, magnesium oxide, calcium oxide, silicon phosphate, titanium oxide, silicon nitride and silicon carbide is sprayed on the common furnace tube, and the common furnace tube is fired by heating to 500 DEG C so as to form the composite furnace tube. The nanocomposite and the nanocomposite furnace tube have the advantages that a construction process is simple and easy to operate, the combination degree of the nanocomposite and the furnace tube is high, the nanocomposite furnace tube has strong thermal shock resistance and high temperature corrosion resistance and is free of pollution and slag formation and high in emissivity, and energy sources are saved. The nanocomposite can be widely applied to the furnace tubes of bath boilers heated by fire coal, fuel oil, gas and biomass, small and medium-sized industrial boilers, petroleum and petrochemical boilers, power station boilers and heating furnaces.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a nanocomposite furnace tube applied to boiler furnace tubes. Background technique [0002] In the production and operation of small boilers, large power plant boilers, and petroleum and petrochemical heating furnaces in China, the furnace tubes are often in high temperature, high pressure or medium pressure, and acid or alkali harsh working environments, so high temperature corrosion and contamination of furnace tubes are common. Problems such as slagging not only greatly reduce thermal efficiency, lose a lot of energy, but also reduce service life, and there are also potential safety hazards. Contents of the invention [0003] The purpose of the present invention is to provide a nanocomposite material, which can greatly improve the high temperature corrosion resistance and anti-contamination and slagging ability of the furnace tube after spraying it on the conve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/02C09D133/00C09D125/14C09D183/00C09D7/12C09D5/08C09D5/16
CPCY02P20/10
Inventor 刘华军
Owner CHAOYANG ATT ELECTRIC POWER ENERGY SAVING TECH
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