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Honeycomb Ceramics

Honeycomb Ceramics

Honeycomb Ceramic Regenerator

中文链接:蜂窝陶瓷蓄热体

Physical and Chemical Properties

Index

Unit

Aluminium Oxide

Dense Alumina

Porous Cordierite

Dense Cordierite

Porous Mullite

Corundun Mullite

Al2O3

%

55~65

55~65

28~38

28~38

60~70

70~80

SiO2

%

25~35

25~35

45~55

50~60

25~35

15~25

MgO

%

1~5

3~5

12~14

5~10

0~1

0~2

Fe2O3+TiO2

%

3~5

2~4

 

 

 

1~3

Others

%

<5

<5

<5

<5

<5

<5

Density

g/cm3

2.0±0.2

2.4~2.7

1.7~2.0

2.1~2.5

2.0~2.5

2.3~2.7

Coefficient of heat expansion

10-6/K-1

≤5

≤5

≤3

≤3.5

≤5

≤6

Specific Heat Capacity

J/Kg·K

900-1150

1000~1150

900-1150

900-1100

1000~1150

1100~1300

Thermal Conductivity

20~1000

1.52.0

1.5~2.5

1.2~1.8

1.5~2.5

1.52.0

1.52.0

Impact Thermal Resistance

/min

≥300

≥300

≥350

≥300

≥350

≥300

Max.Working Temp

1350

1350

1320

1320

1450

1550

Water absorption

%

≤20

≤1

15~25

≤1

15~25

15~25

1. Honeycomb Ceramic Regenerator for HTAC

In the early 1990s in regenerative burners, the rise of high temperature oxygen-depleted combustion technology, also known as High Temperature Air Combustion (HTAC) technology, generally received an effect such as 30% energy saving, output increased by 20%, NOx emissions well below the environmental protection standard. Honeycomb ceramic regenerator is a key component in the HTAC technology, widely used in steel, machinery, building materials, petrochemicals, non-ferrous metal smelting and other industries such as heating furnace, hot-blast furnace, heat treatment furnace, cracking furnace, roasting furnace, forging furnace, radiant tube burner, melting furnace, soaking furnace, bell furnace, oil gas boiler furnace, etc.

Ceramic honeycomb has many advantages such as small size, light weight, large surface area, high refractoriness, high heat capacity, low air flow resistance loss, and so on. Compared with regenerative ball, honeycomb ceramic is more difficult to plug straight airflow path; honeycomb ceramic regenerative chamber volume also significantly reduced, a sufficient amount of burners can be arranged to meet the needs of the thermal load. Honeycomb ceramic can guarantee temperature uniformity, rapid heat transfer, low oxygen combustion, significantly reducing oxidation loss and NOx gases generated, significantly improving environmental protection and energy-saving effect.

Influencing factors about honeycomb ceramic regenerator heat transfer performance: honeycomb body pore size and wall thickness; honeycomb body length; reversal time; gas flow rate; material properties of the honeycomb body; air feeding efficiency, etc.

Honeycomb ceramic regenerators developed by Yuanying avoid the common shortcomings of honeycomb ceramic regenerator on the market, very suitable for used under HTAC conditions. It has high temperature resistance, good thermal shock resistance, corrosion resistance, high strength, big heat storage capacity, good thermal conductivity and other significant advantages, greatly improved energy efficiency and service life.

  Honeycomb ceramic regenerators       Honeycomb ceramic regenerator       Honeycomb ceramics       Regenerators

2. Honeycomb Ceramic Regenerator for RTO/RCO

RTO (Regenerative Thermal Oxidizer), its principle is that the organic exhaust gas is heated to 760 degrees Celsius, and then the VOC oxidized and decomposed into carbon dioxide and water. Oxidation generated high temperature gas stored heat in the honeycomb ceramic regenerator for heating the subsequent entering organic exhaust gas, thus saving fuel consumption for heating exhaust gas. Its exhaust gas decomposition efficiency is more than 99%, and heat recovery efficiency is more than 95%. RTO main structure consists of combustion chamber, ceramic regenerator and switching valve.

Yuanying ceramic honeycomb has good thermal stability, good crack resistance, low pressure loss, low thermal expansion coefficient, high water absorption, good corrosion resistance, big surface area, and so on. It is very suitable for used as heat storage material in regenerative incinerator, and has been widely used in RTO/RCO devices at home and abroad.

3. Materials and Specifications

Materials: alumina, cordierite, mullite-cordierite, mullite, corundum-mullite, zirconia mullite, silicon carbide composite material, aluminum titanate, spodumene, silicon nitride, spinel, ect.

Holes type: circular, square, rectangular, hexagonal holes, triangular, etc.

Specifications: 100x100x100, 100x150x150, 150x100x100, 150x150x150, 150x150x300, 200x100x100mm

Honeycomb Ceramic Catalyst Carrier

中文链接:蜂窝陶瓷触媒载体

Physical and Chemical Properties

Items

Unit

Parameters

Chemical Composition

SiO2

%

49~51

Al2O3

33~35

MgO

13~14

Wall thickness

100 CPSI

mm

0.43

200 CPSI

0.32

300 CPSI

0.3

400 CPSI

0.18

600 CPSI

0.15

Compressive Strength

A-axis

MPa

≥16

B-axis

≥3

C-axis

≥0.15

Water Absorption

%

25±2

Coefficient of Thermal Expansion

10-6/k-1

0.8-2.0

Thermal Shock Resisitance

≥550

Aperture Ratio

%

≥70%

Maximum Operating Temperature

≥1370

Softening Temperature

≥1410

Bulk Density

kg/l

0.43-0.75

Yuanying honeycomb ceramic catalyst carrier has many advantages such as great geometric surface area, low exhaust resistance, low volume density, high compressive strength, stable chemical properties, rapid heating and thin pore walls. Common carrier material is cordierite, its service temperature up to 1300 ℃, wall thickness up to 0.15mm, number of holes up to 600 cells / square inch

Catalyst Carrier      Catalyst Carrier      Honeycomb Ceramic Catalyst Carrier      Honeycomb Ceramic Catalyst Carrier

Honeycomb ceramic catalyst carrier mainly used to remove poisonous gases, such as car and motorcycle exhaust gas purification; boiler flue gas denitration (NOx); chemicals, paint, thermal power and other industries waste gas purification; home cooking process "smoke " purification.

Ceramic honeycomb important application is used as catalyst carrier in automobile exhaust purifier. Its wall surface coated with precious metals platinum, palladium, rhodium that can make exhaust gas and catalyst contact area more than 2000m2, allowing exhaust gas and precious metals have enough chance for atom collisions that produce an effective chemical reaction. Ceramic honeycomb can improve catalyst performance, reducing volume of catalyst, reducing amount of precious metal, improving efficiency of chemical reaction.

Yuanying ceramic honeycomb main advantages:

Meet Euro Ⅳ standard and Europe Ⅴ; large specific surface area; small thermal expansion coefficient; good thermal shock resistance; good cold start performance; low ignition temperature, heating up fast; small gas resistance; thin hole wall; small backpressure; high compressive strength; high conversion efficiency; long service life. 

Honeycomb ceramic filters

中文链接:蜂窝陶瓷过滤片

Honeycomb ceramic filters used new ceramic materials and high-quality high-density straight hole mesh structure, its inner wall has a natural chemical adsorption (affinity) capability to the oxide, can adsorb impurities in metal liquid and filter particles smaller than the pore size. Straight hole designed can ensure strength and thermal shock resistance, keep flow and strength in balance, rectify the metal melt, reduce vortex, prevent air bubbles generated, make the turbulent flow of molten metal into a steady laminar flow, to ensure smooth and continuous casting, and ensure smooth filling. Honeycomb ceramic filter can simplify casting system, reducing casting porosity, significantly improve casting metallurgical structure, mechanical properties, surface quality and percent of pass, extending its service life.

Honeycomb Ceramics Filter  Honeycomb Ceramics Filters  filters  Ceramic filters

Yuanying honeycomb ceramic filter has large specific surface area, high strength, good thermal shock resistance, strong anti-metal flow impact ability, not falling dregs, not broken, good filter effects, good chemical stability and dimensional precision.

Materials: cordierite, mullite, cordierite / mullite, mullite / zirconia, high alumina, silicon carbide.

Hole type: triangular hole, round hole, square hole

Honeycomb ceramic filters widely used in metallurgy, casting industry such as gray iron, ductile iron, aluminum, aluminum alloy, copper, stainless steel and other products.

Infrared Ceramic Combustion Plate

中文链接:红外线陶瓷燃烧板

Infrared Combustion Plate  Infrared Ceramic Combustion Plates  Infrared Ceramic Plate  Infrared Ceramic Plates

Infrared ceramic combustion plate is the core component of the gas infrared heaters, on its 65 * 45mm area on evenly arranged thousands flame paths, flame path wall coated with high quality combustion catalyst. When sufficient pressure gas goes into the flame paths of the ceramic combustion plate, it premixes with air and fully burns fiercely in the flame paths, the combustion plate showing hot state, but the surface is no flame and smoke. The heat generated by the combustion to the object cores by the way of infrared radiation, which ensures heating effectiveness and efficiency and reduces the emission of CH, NOx, CO (reduced by more than 70%) and other harmful gases. Infrared burner for heating, drying, insulating, warming, barbecuing, there are no phenomenon of "carbon deposition", outdoor good anti-wind speed ability, easy to install, high efficiency and energy saving, cost reduction one above half. It has been widely used in industrial paint, printing and dyeing, food and other industries.

Yuanying infrared ceramic combustion plate has a strong resistance to abrupt changes in temperature, high temperature resistance (1200oC), high mechanical strength, large specific surface area, good thermal shock resistance, good dimensional accuracy, no deformation for long-term use, no carbon deposition and no blockage in flame paths, etc.

Infrared Ceramic Combustion Plate Infrared Ceramic Plate Ceramic Combustion Plate

Shape: oblong, square, round, diamond, irregular shape

Size: Φ50mm-300mm

Hole type: round, square, hexagonal, triangular

Hole density: 150-500cpsi

Items

Unit

Index

Water absorption rate

%

50.4

Open porosity

%

61

Specific Gravity

g/cm3

0.6-0.9

Thermal Expansion Coefficient

10-6/K-1

1.5-3.0

Softening Temperature

oC

1280

Surface Temperature

oC

1000-1200

CO Release

%

0.006

NOx Release

%

5ppm

Material

 

Cordierite