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Method for manufacturing ceramic-based composite burners for field of coal chemical industry

A technology of composite materials and manufacturing methods, which is applied in the field of preparation of ceramic matrix composite material burners, can solve problems such as short service life of burners, and achieve the effects of strong adaptability, high hardness and long service life

Active Publication Date: 2016-05-11
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology

[0004] Aiming at the problem of short service life of the process burner in the field of coal chemical industry with traditional materials, the present invention develops a method for manufacturing a burner made of C / SiC ceramic matrix composite material in the field of coal chemical industry

Method used

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  • Method for manufacturing ceramic-based composite burners for field of coal chemical industry

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Embodiment Construction

[0023] The C / SiC ceramic matrix composite burner products in the coal chemical industry have the characteristics of complex inner and outer surface shapes, uneven wall thickness, and high requirements for inner surface roughness. The present invention adopts a new process preparation process to manufacture C / SiC ceramic matrix composite material burner products in the field of coal chemical industry. The specific process flow is as follows figure 1 shown.

[0024] The basic steps of the method for manufacturing a C / SiC ceramic matrix composite burner in the field of coal chemical industry are described in detail below:

[0025] ⑴Ceramic burner mandrel design and processing: Based on the design size of the burner product structure, graphite is used as the mandrel material, and the mandrel structure is designed under the premise of ensuring strength. For the convenience of later use, the mandrel adopts a split design structure , whose size is determined by the size of the burne...

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Abstract

The invention relates to a method for manufacturing ceramic-based composite burners for the field of coal chemical industry. The method includes: (1) design and machining of core moulds of ceramic burners; (2) structural design and shaping of prefabricated products of the ceramic burners; (3) preparation of interface layers of the prefabricated products of the ceramic burners; (4) densification of matrixes of the ceramic burners; (5) machining of the ceramic burners; (6) treatment of surface wear-resistant coatings of the ceramic burners. The method for manufacturing the ceramic-based composite burners for coal water slurry has the advantages of simple technical process, low cost and high rate of finished products. The burners manufactured according to the method have excellent erosion and abrasion resistance performance and are high in hardness, resistant to high temperature and high in toughness, and service lives of the burners are prolonged effectively.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to a preparation method of a ceramic matrix composite material burner in the field of coal chemical industry. Background technique [0002] At present, as far as the process burners in the field of coal chemical industry such as new coal and electricity are concerned, due to the high-pressure oxidizing gas flow under their working conditions, the high-hardness impurities such as yellow ore and quartz in the coal powder will cause severe erosion and wear on the nozzles. At the same time, the outer surface of the process burner is often subjected to a high temperature of more than 1200°C in the combustion furnace, while the inner surface is cooled by the normal temperature medium, resulting in a temperature difference between the inner and outer surfaces of the process burner reaching more than 1000°C, and the average temperature gradient reaching 30-40 ℃ / mm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/80C04B35/571
CPCC04B35/571C04B35/806C04B2235/48C04B2235/5248C04B2235/5256C04B2235/614C04B2235/616C04B2235/77
Inventor 杨晓辉白龙腾王毅郭春峰郑道道赵强靳国平
Owner XIAN AEROSPACE PROPULSION INST
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