Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite ceramic burner and manufacturing method thereof

A technology of composite ceramics and burners, which is applied in the direction of combustion methods, burners, and burners for burning powder fuels. Small size, good thermal shock resistance, and guaranteed reliability

Pending Publication Date: 2021-09-28
NANTONG GAOXIN ANTIWEAR MATERIALS TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] a) Since the concentrator receives high-temperature radiation in the furnace, the steel structure is easily deformed, resulting in a large area of ​​alumina ceramic sheets falling off;
[0004] b) During operation, after the burner is tempered, the alumina tiles will collapse and break after being subjected to instantaneous high temperature due to their poor thermal shock resistance
[0005] The above two situations will cause the concentrator to lose its application function, affect the operation of the boiler, and even cause a shutdown accident
In general, power plants have to spend a lot of money for maintenance every year, and the maintenance cost remains high, which is a problem that plagues power plants

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A composite ceramic burner of the present invention is prepared from a composite ceramic material; the composite ceramic material is composed of the following components according to mass percentage: 65% silicon carbide, 15% brown corundum, 10% aluminate cement, high temperature resistant 5% stainless steel fiber, 5% auxiliary materials (including water reducer, accelerator and silica powder, etc.). Silicon carbide contains 50% of silicon carbide particles with a particle size of 0-1mm, 30% of silicon carbide particles of 1-3mm, 15% of silicon carbide particles of 3-5mm, and 10% of fine powder of 300 mesh.

[0035] Composite ceramic burners are prepared by the following steps:

[0036] 1) Raw material preparation: prepare silicon carbide, brown corundum powder, aluminate cement, high temperature resistant stainless steel fiber and auxiliary materials in proportion;

[0037] 2) Calculate the weight of the concentrator, weigh and mix silicon carbide, brown corundum, and ...

Embodiment 2

[0045] A composite ceramic burner of the present invention is prepared from a composite ceramic material; the composite ceramic material is composed of the following components according to mass percentage: 55% silicon carbide, 20% brown corundum, 15% aluminate cement, high temperature resistant Stainless steel fiber 5% and accessories 5%. Silicon carbide contains 50% of silicon carbide particles with a particle size of 0-1mm, 30% of silicon carbide particles of 1-3mm, 15% of silicon carbide particles of 3-5mm, and 10% of fine powder of 300 mesh.

[0046] Composite ceramic burners are prepared by the following steps:

[0047] 1) Raw material preparation: prepare silicon carbide, brown corundum powder, aluminate cement, high temperature resistant stainless steel fiber and auxiliary materials in proportion;

[0048] 2) Calculate the weight of the concentrator, weigh and mix silicon carbide, brown corundum, and aluminate cement in proportion, then pour it into the mixer, add wat...

Embodiment 3

[0056] A composite ceramic burner of the present invention is prepared from a composite ceramic material; the composite ceramic material is composed of the following components according to mass percentage: 60% silicon carbide, 12% brown corundum, 12% aluminate cement, high temperature resistant 8% stainless steel fiber, 8% auxiliary materials (including water reducer, accelerator and silica powder). Silicon carbide contains 50% of silicon carbide particles with a particle size of 0-1mm, 30% of silicon carbide particles of 1-3mm, 15% of silicon carbide particles of 3-5mm, and 10% of fine powder of 300 mesh.

[0057] Composite ceramic burners are prepared by the following steps:

[0058] 1) Raw material preparation: prepare silicon carbide, brown corundum powder, aluminate cement, high temperature resistant stainless steel fiber and auxiliary materials in proportion;

[0059] 2) Calculate the weight of the concentrator, weigh and mix silicon carbide, brown corundum, and alumin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a composite ceramic burner and a manufacturing method thereof. The manufacturing method comprises the following steps that silicon carbide, brown fused alumina powder and aluminate cement are weighed and mixed according to the proportion and then poured into a blender mixer, 4%-6% of water is added, high-temperature stainless steel fibers are added after stirring is conducted till the mixture is in a lake shape, and stirring and discharging are conducted; a guide plate and an outer frame of a pulverized coal concentrator are separately poured, demolding treatment is conducted 12 hours later at the normal temperature, and after demolding, the guide plate and the outer frame are placed for 2 days to be dried in the shade; the demolded blank is placed in a drying room at 75-85 DEG C for 2 days; the dried guide plate and outer frame blanks are put into a heat treatment furnace to be sintered; the sintered guide plate is inserted into the sintered outer frame to be assembled, and the whole concentrator is formed after inorganic glue is adopted for gluing. The composite ceramic burner produced through the method is resistant to high temperature, free of deformation, resistant to abrasion and good in thermal shock resistance, and the reliability in the using process is guaranteed.

Description

technical field [0001] The invention relates to the technical field of burners, in particular to a composite ceramic burner and a manufacturing method thereof. Background technique [0002] In coal-fired power plants, there is a four-corner tangential burner. Before the pulverized coal enters the boiler for combustion, it is separated from thick and thin by a concentrator to reduce the emission of nitrogen oxides. However, the traditional production method of this kind of concentrator is to use steel plates for the outer frame, and use alumina ceramic tiles for the inner lining. This process has the following problems in terms of usage: [0003] a) Since the concentrator receives high-temperature radiation in the furnace, the steel structure is easily deformed, resulting in a large area of ​​alumina ceramic sheets falling off; [0004] b) During operation, after the burner is tempered, the alumina tiles will collapse and break after being subjected to instantaneous high tem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00C04B35/565C04B35/622C04B35/64C04B35/66B28B11/24B28B13/02B28B13/06
CPCF23D1/00C04B35/66C04B35/565C04B35/622C04B35/64B28B13/02B28B13/06B28B11/243C04B2235/3217C04B2235/5216C04B2235/96C04B2235/9607
Inventor 钱兵吴贞林张文志
Owner NANTONG GAOXIN ANTIWEAR MATERIALS TECH CO LTD