Abrasion-resistant prefabricated part with high heat shock-resistant property for dry quenching coke tank and preparation method thereof

A technology of prefabricated parts and coke, which is applied in the field of prefabricated parts with high thermal shock resistance and wear resistance for CDQ coke tanks and prefabricated parts for coking equipment, which can solve the problems of poor shock resistance and high cost of stainless steel materials. High, heat-resistant cast iron with high hardness, etc., to achieve the effects of excellent shock resistance, extended service life, and good wear resistance

Pending Publication Date: 2019-10-01
SHANDONG LUMING HIGH TEMPERATURE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, stainless steel has the disadvantages of high cost and difficult processing, and heat-resistant cast iron has problems such as high hardness, high brittleness, and poor resistance to shock and heat.
Medium chromium cast steel quenching tank lining has the problem of weak thermal conductivity

Method used

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  • Abrasion-resistant prefabricated part with high heat shock-resistant property for dry quenching coke tank and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A prefabricated part with high thermal shock resistance and wear resistance for CDQ coke tanks, which is prepared from the following raw materials in parts by weight:

[0037] Silicon carbide whiskers 20 parts;

[0038] 40 parts of alumina-based homogeneous material;

[0039] 5 parts of silicon dioxide micropowder;

[0040] 1 part of water;

[0041] 0.2 part of polycarboxylate superplasticizer;

[0042] α-Al 2 o 3 15 parts of powder;

[0043] MoSi 2 8 servings of powder.

[0044] The silicon carbide whiskers described herein have a diameter of 0.1-2um, a length of 20-300um, and a powdery appearance.

[0045] The content of aluminum chloride in the bauxite-based homogeneous material mentioned therein is 88wt%, and the bauxite ore green body with 75wt% aluminum chloride content is fired at 1500°C for 4 hours, and the bulk density after firing is 2.92g·cm -3 .

[0046] The particle size of the silicon dioxide micropowder is 50-100nm.

[0047] α-Al described in ...

Embodiment 2

[0054] A prefabricated part with high thermal shock resistance and wear resistance for CDQ coke tanks, which is prepared from the following raw materials in parts by weight:

[0055] Silicon carbide whiskers 25 parts;

[0056] 50 parts of alumina-based homogeneous materials;

[0057] 8 parts of silicon dioxide micropowder;

[0058] 2 parts of water;

[0059] 0.3 part of polycarboxylate superplasticizer;

[0060] α-Al 2 o 3 18 parts of powder;

[0061] MoSi 2 Powder 10 parts.

[0062] The silicon carbide whiskers described herein have a diameter of 0.1-2um, a length of 20-300um, and a powdery appearance.

[0063] The content of aluminum chloride in the bauxite-based homogeneous material mentioned therein is 88wt%, and the bauxite green body with 75wt% aluminum chloride content is fired at 1550°C for 4 hours, and the bulk density after firing is 2.98g·cm -3 .

[0064] The particle size of the silicon dioxide micropowder is 50-100nm.

[0065] α-Al described in 2 o 3...

Embodiment 3

[0072] A prefabricated part with high thermal shock resistance and wear resistance for CDQ coke tanks, which is prepared from the following raw materials in parts by weight:

[0073] Silicon carbide whiskers 28 parts;

[0074] 53 parts of alumina-based homogeneous materials;

[0075] 8 parts of silicon dioxide micropowder;

[0076] 2 parts of water;

[0077] 0.5 part of polycarboxylate superplasticizer;

[0078] α-Al 2 o 3 19 parts of powder;

[0079] MoSi 2 Powder 11 parts.

[0080] The silicon carbide whiskers described herein have a diameter of 0.1-2um, a length of 20-300um, and a powdery appearance.

[0081] The content of aluminum chloride in the bauxite-based homogeneous material mentioned therein is 88wt%, and the bauxite ore green body with 75wt% aluminum chloride content is fired at 1570 ° C for 4 hours, and the bulk density after firing is 3.32g·cm -3 .

[0082] The particle size of the silicon dioxide micropowder is 50-100nm.

[0083] α-Al described in ...

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Abstract

The invention relates to an abrasion-resistant prefabricated part with high heat shock-resistant property for a dry quenching coke tank, and belongs to the field of high temperature-resistant materials. The abrasion-resistant prefabricated part with high heat shock-resistant property for the dry quenching coke tank is characterized in that silicon carbide whiskers, bauxite-based homogenized material and silicon dioxide micropowder are used as base materials, and the surface is sprayed with alpha-Al2O3 (aluminum oxide) and MoSi2 (molybdenum disilicide) powders, so that the prepared abrasion-resistant prefabricated part has the high temperature-resistant property, corrosion-resistant property, abrasion-resistant property and heat shock-resistant property, and also has excellent cold shock and heat shock-resistant property. The abrasion-resistant prefabricated part with high heat shock-resistant property for the dry quenching coke tank has the advantages that by using the silicon carbidewhiskers, the abrasion-resistant property is good, the toughness is high, and the heat conduction coefficient is higher; by compounding with the alpha-Al2O3 and MoSi2 powders, the coating tissue is dense, the tendency of phase change is little, the high-temperature mechanical property is excellent, the corrosion-resistant property is good, and the heat shock-resistant property is excellent; the preparation technology is simple and convenient, the installation and updating are convenient, and the abrasion-resistant prefabricated part is suitable for scale production.

Description

technical field [0001] The invention relates to a prefabricated part for coking equipment, in particular to a prefabricated part with high thermal shock resistance and wear resistance for dry quenching coke tanks and a preparation method thereof, belonging to the field of high temperature resistant materials. Background technique [0002] CDQ is a very important link in the coking process. CDQ is dry coke quenching, which refers to the production process of cooling red coke with recycled inert gas in a closed system and recovering coke waste heat. No pollutants are discharged during the process, realizing energy saving and environmental protection. It has greater advantages than traditional wet coke quenching in terms of improving coke quality, recycling energy and protecting the environment. [0003] The main body of CDQ mainly includes two parts: CDQ furnace and waste heat boiler. The coke tank is one of the important red coke transportation equipment in CDQ furnace. The...

Claims

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Application Information

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IPC IPC(8): C04B30/02C10B39/02C04B41/65C04B111/20C04B111/28
CPCC04B30/02C04B41/65C04B41/009C04B41/5071C10B39/02C04B2111/28C04B2111/2038C04B2201/32C04B2201/50C04B14/383C04B14/303C04B14/06C04B24/24C04B41/5031C04B41/4545
Inventor 傅修文王秀李畅
Owner SHANDONG LUMING HIGH TEMPERATURE MATERIAL TECH
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