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HTAC high temperature air combustion technology is mainly used in heating furnaces, aluminum melting furnaces, heat treatment furnaces and other industrial kilns in the steel, non-ferrous metals, machinery and other industries.

Category: Heat storage Ceramic

Tag：High Temperature Air Combustion

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HTAC high temperature air combustion technology is mainly used in heating furnaces, aluminum melting furnaces, heat treatment furnaces and other industrial kilns in the steel, non-ferrous metals, machinery and other industries.

HTAC High Temperature Air Combustion--Platinum Rare Earth Catalyst for Organic Waste Gas

Details

HTAC high temperature air combustion technology is mainly used in heating furnaces, aluminum melting furnaces, heat treatment furnaces and other industrial kilns in the steel, non-ferrous metals, machinery and other industries. The honeycomb ceramic heat storage body is installed for heat exchange. While saving 20~50% of gas consumption, it can also greatly reduce NOx emissions and reduce combustion noise, achieving the dual effects of energy saving and environmental protection. Common honeycomb ceramic heat storage body specifications are 150×100×100, 100×100×100, the hole shape is generally hexagonal, a small amount of square holes and round holes are used, and the hole width is generally 3-12 mm. When in use, a layer of baffle bricks with length of 150-800mm, width of 100-400mm, a thickness of 100-120mm, and an aperture of about φ13 is generally installed in front of the ceramic to block the high temperature flame ejected from the furnace and prevent the flame from directly scouring the ceramic. The materials of heat storage bodies generally include mullite, mullite-cordierite synthesis, (zirconium) corundum mullite, corundum, silicon carbide, etc. Our ceramics have been optimized and upgraded in terms of material, particle grading, density, and process while ensuring that they meet the requirements of national industry standards. The thermal shock resistance and slag resistance of ceramics have been greatly improved, and the service life exceeds the level of peers.                 

Chemical Composition


 Material Composition

Mullite

Corundum Mullite

Mullite-Cordierite

SiO₂ (%)

28~33

25~30

35~45

Al₂O₃ (%)

60~65

65~70

45~55

ZrO₂ (%)

2~3

2~3

1~2

Fe₂O₃ (%)

≤1.5

≤1.5

≤1.5

K₂O+Na₂O etc.(%)

≤5

≤5

≤5


Specifications And Sizes


Number

Specification
Sizes

Quantity of
Channels(pcs)

Inscribed circle diameter(mm)

Wall Thickness
(mm)

Void Section
(%)

Specific Surface
Area(m²/m³)

Apparent
Density

(g/cm³)

1

100×100×100

28×24

3

1

52.38

738

0.9-1.0

2

150×100×100

41×24

3

1

51.13

715

0.9-1.0

3

100×100×100

26×22

3.5

1

60.64

733

0.85-0.95

4

150×100×100

39×22

3.5

1

60.64

727

0.85-0.95

5

100×100×100

23×20

4

1

61.00

650

0.8-0.9

6

150×100×100

35×20

4

1

64.69

680

0.8-0.9

7

100×100×100

18×16

5

1.2

62.49

539

0.8-0.9

8

150×100×100

28×16

5

1.2

64.81

551

0.8-0.9

9

100×100×100

15×13

6

1.5

60.65

445

0.8-0.9

10

150×100×100

22×13

6

1.5

59.30

429

0.8-0.9

11

100×100×100

24×24

3

1

52.00

730

0.9-1

12

150×100×100

36×24

3

1

52.00

730

0.9-1

13

100×100×100

15×13

Φ6

1.5

55.11

407

0.9-1


Remarks


The sum of two incomplete hexagonal holes is about 80%, which can be calculated as one hole. With the same hole diameter and wall thickness, different arrangement and combination methods of mold holes will result in slightly different opening rates and specific surface areas. During the use of the mold, wear will occur, the inner wall thickness will become thicker, the specific surface area and opening rate will be decreased, and the weight of the product will be increased.



Physical Properties


 Material

Performance

Mullite

Corundum Mullite

Mullite-Cordierite

Material Density(g/cm³)

2.0~2.3

2.1~2.4

1.8~2.2

Bulk Density(g/cm³)

0.8~1.1

0.8~1.1

0.6~0.7

Coefficient of Thermal Expansion(RT-800℃)(×10⁻⁶ ℃¹)

≤5.5

≤6.5

≤3

Specific Heat Capacity(J/kg ·k)

950~1150

950~1150

850~1050

Thermal Conductivity(20-1000℃)(w/m.k)

1.5~2.0

1.5~2.0

1.3~1.8

Thermal Shock Temperature(℃)

≥350

≥350

≥400

Load Softening Temperature(0.1MPa)(℃)

1450

1500

1350

Water Absorption(%)

15~20

15~20

15~20

Compressive Strength (C-axis Direction)(MPa)

≥12

≥12

≥10

Compressive Strength(A.B Axis Direction)(MPa)

≥2

≥2

≥1.5



Baffle Brick(Fire Block)


Material

Performance

Mullite

Corundum Mullite

Mullite-Cordierite

Al₂O₃ (%)


≥65


≥70


≥80

Bulk Density(g/cm³)

≥1.4

≥1.5

≥1.6

Coefficient of Thermal Expansion(×10⁻℃-)(RT-800℃)

≤5.5

≤6

≤9

Max.Operating Temperature(℃)

1450

1500

1600 




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