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Ceramic material, ceramic heat exchange tube as well as preparation method thereof and ceramic reboiler

A technology of ceramic materials and heat exchange tubes, which is applied in the field of heat exchange equipment, can solve the problems of short service life and high replacement frequency of reboilers, and achieve the effects of avoiding leakage, strong corrosion resistance, and fast heat conduction

Inactive Publication Date: 2015-04-22
GONGYI RONGHUA CERAMIC HEAT EXCHANGER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a ceramic material to solve the problems of short service life and high replacement frequency of the reboiler due to corrosion and leakage of heat exchange tubes and tube sheets

Method used

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  • Ceramic material, ceramic heat exchange tube as well as preparation method thereof and ceramic reboiler
  • Ceramic material, ceramic heat exchange tube as well as preparation method thereof and ceramic reboiler
  • Ceramic material, ceramic heat exchange tube as well as preparation method thereof and ceramic reboiler

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Experimental program
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Effect test

Embodiment 1

[0037] The ceramic material in this embodiment is composed of the following components in mass percentage: 5% metallic silicon, 70% silicon carbide, 14% silicon dioxide, 10% bonded clay, and 1% lignin.

[0038] The ceramic heat exchange tube of this embodiment is mainly made of the following raw materials in mass percentage: 5% of metal silicon powder of 800 mesh, 70% of silicon carbide powder of 800 mesh, 14% of silicon dioxide powder of 325 mesh, and 10% of bonded clay of 160 mesh , lignin 1%.

[0039] The preparation method of the ceramic heat exchange tube of this embodiment comprises the following steps:

[0040] 1) Take the metal silicon powder, silicon carbide powder, silicon dioxide powder, and bonded clay in the formula and add them to the ball mill, and add 30% of the total mass of the above powders (metal silicon powder, silicon carbide powder, silicon dioxide powder, and bonded clay) water, mixed and ground for 10 hours to obtain a mixed slurry, which was put into...

Embodiment 2

[0046] The ceramic material in this embodiment is composed of the following components in mass percentage: 8% metallic silicon, 66.8% silicon carbide, 10% silicon dioxide, 15% bonded clay, and 0.2% lignin.

[0047] The ceramic heat exchange tube of this embodiment is mainly made of the following raw materials in mass percentage: 5% of metal silicon powder of 1000 mesh, 70% of silicon carbide powder of 900 mesh, 14% of silicon dioxide powder of 325 mesh, and 10% of bonded clay of 170 mesh , lignin 1%.

[0048] The preparation method of the ceramic heat exchange tube of this embodiment comprises the following steps:

[0049] 1) Take the metal silicon powder, silicon carbide powder, silicon dioxide powder, and bonded clay in the formula and put them into the ball mill, and add 32% of the total mass of the above powders (metal silicon powder, silicon carbide powder, silicon dioxide powder, and bonded clay) water, mixed and ground for 11 hours to obtain a mixed slurry, which was p...

Embodiment 3

[0055] The ceramic material of this embodiment is composed of the following components in mass percentage: 10% of metal silicon, 60% of silicon carbide, 15% of silicon dioxide, 12% of bonded clay, and 0.5% of lignin.

[0056] The ceramic heat exchange tube of this embodiment is mainly made of the following raw materials in mass percentage: 900 mesh metal silicon powder 5%, 1000 mesh silicon carbide powder 70%, 325 mesh silicon dioxide powder 14%, 180 mesh bonded clay 10% , lignin 1%.

[0057] The preparation method of the ceramic heat exchange tube of this embodiment comprises the following steps:

[0058] 1) Take the metal silicon powder, silicon carbide powder, silicon dioxide powder, and bonded clay in the formula and add them to the ball mill, and add 35% of the total mass of the above powders (metal silicon powder, silicon carbide powder, silicon dioxide powder, and bonded clay) water, mixed and ground for 12 hours to obtain a mixed slurry, which was put into the slurry ...

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Abstract

The invention discloses a ceramic material, a ceramic heat exchange tube as well as a preparation method and a ceramic reboiler. The ceramic material comprises the following components in percentage by mass: 5-10% of metallic silicon, 60-70% of silicon carbide, 10-15% of silicon dioxide, 10-15% of binding clay and 0.2-1% of lignin. The ceramic heat exchange tube disclosed by the invention has normal temperature compression strength of 35-50MPa, can resist a pressure of 0.7-0.9MPa under the working condition that the temperature is lower than 300 DEG C and heating oil flows in the tube, cannot have a seepage condition, is strong in corrosion resistance, and has good corrosion resistance to high-temperature gases and liquid of hydrochloric acid, sulfuric acid and the like; silicon dioxide is used for forming an enamel layer to seal air holes, thereby solving the problem of seepage of a common SiC material; and the ceramic heat exchange tube has the advantages of high-temperature resistance, quick heat conduction, corrosion resistance and seepage resistance, is durable in various environments, and is long in service life and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of heat exchange equipment, and specifically relates to a ceramic material, and also relates to a ceramic heat exchange tube, a preparation method thereof, and a ceramic reboiler using the ceramic heat exchange tube. Background technique [0002] A reboiler (also called a reboiler) is a special heat exchanger capable of exchanging heat while vaporizing a liquid. The reboiler is often used together with the fractionation tower. The material expands or even vaporizes when heated in the reboiler, and the density becomes smaller, thus leaving the vaporization space and returning to the tower smoothly; The phase falls to the bottom of the column, thus completing the fractional distillation. [0003] At present, most of the reboilers used are metal reboilers. The heat exchange tubes and tube sheets are made of ordinary metal materials. There is a large risk of leakage; some heat exchange tubes and tube sheet mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/565C04B35/622F28F21/04
Inventor 翟延军
Owner GONGYI RONGHUA CERAMIC HEAT EXCHANGER
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