I. Introduction : Our company use the composite rare earth catalyst which is produced by our company to coat ceramic honeycomb used in industrial waste gas treatment.That can achieve the purpose of the exhaust gas in Treatment compliance and the available trace precious metals ( palladium, platinum, rhodium )in emissions standards.
Products have the characteristics of large specific surface area , small resistance loss , low coefficient of thermal expansion ,and high water absorption , good crack resistance. Which have been widely used in domestic RTO, RCO devices. My company for the gas treatment (RTO, RCO) in different technical requirements , develop and produce a variety of materials , size of honeycomb ceramic products.
Our new material honeycomb ceramic products won the State Science and Technology and other five ministries jointly issued the 2000 new product certification , over the years the series batch exported to USA, Germany, Korea, Japan and other developed countries. Our company has a sequence according to European and American standard cellular ceramic filler materials to produce a variety of ceramic honeycomb .
2.product characteristics :1 Hole thin wall, large specific surface area
2 Backpressure small , high compressive strength
3 Water absorption stable
4 Size standardized, easy to package
5 Small thermal expansion coefficient
5 Good thermal shock resistance, thermal shock resistance and thermal
6 With the active ingredient and a variety of catalysts good matching
7 Cold start performance, low ignition temperature , heating up fast, small air resistance, high conversion efficien
3. the product application : Widely used in the chemical industry , automotive paint and toxic gas purification mining industry , chemical industry tower packing , contact combustion, heat transfer system of industrial waste gas treatment, and wastewater treatment , petrochemical refining, air drying , contact burning, the far-infrared stove metal liquid filtration. Our company can according to customer specifications and require to produce a variety of products.
4.
the physical and chemical properties :Physical properties:
Name |
Unit |
Stoneware |
Cordierite |
Mullite cordierite |
Mullite |
Proportion |
g/cm3
|
2.4-3.0 |
2.4-2.48 |
2.3 |
2.1 |
Coefficient of thermal expansion |
(20--1000ºC)10-6ºC-1
|
1.3-3.5 |
1.3-3.5 |
2.4-4.0 |
6.2 |
Specific heat |
(20--1000ºC)J/kgK |
850-1200 |
800-1200 |
850-1100 |
850-1050 |
Thermal conductivity |
(20--1000ºC)W/mk |
1.2-2.0 |
1.5-2.5 |
1.5-2.3 |
1.4-2.0 |
Thermal shock |
0K/Min
|
250 |
250 |
250 |
350 |
The maximum operating temperature |
ºC |
1350 |
1300 |
1350 |
1400 |
Acid resistance |
% |
>99 |
>99 |
>99 |
>99 |
Alkali |
% |
>85 |
>85 |
>85 |
>85 |
Water absorption |
Wt% |
22±5 |
21±5 |
20±5 |
20±5 |
Chemical properties :
name |
Stoneware |
Cordierite |
Mullite cordierite |
Mullite |
SiO2
|
41.0-45.0 |
46-48 |
29-30 |
27-28 |
Al2O3
|
34.0-37.0 |
34-37 |
68-69 |
70-71 |
MgO |
5.0-7.0 |
7.00-7.50 |
-- |
-- |
Na2O+ K2O+CaO
|
1.2-1.4 |
2.50-2.90 |
0.70-0.90 |
0.80-1.20 |
Fe2O3
|
1.3-1.5 |
0.70-0.90 |
0.50-0.70 |
0.50-0.70 |
TiO2+BaO
|
0.20-0.25 |
0.30-0.40 |
-- |
-- |
5.Customer visiting