Product Description
Inert Alumina Ceramic Balls: Key Catalyst Support Properties
1. Functional Role in Catalysis
As catalyst carriers, inert alumina ceramic balls serve as critical structural components in chemical reactors by:
- Providing high surface area (typically 200-400 m²/g) for optimal catalyst dispersion
- Ensuring uniform fluid distribution to maximize reactant-catalyst contact
- Enhancing reaction selectivity through controlled pore geometry
2. Material Advantages
| Property |
Technical Benefit |
Performance Impact |
| High Porosity (40-60% void volume) |
Increases active catalyst loading |
Boosts conversion rates by 15-30% |
| Thermal Stability (≤1600°C) |
Maintains structure in exothermic reactions |
Prevents sintering-induced deactivation |
| Chemical Inertness (pH 1-14 resistant) |
Compatible with acidic/alkaline environments |
Extends catalyst lifespan |
3. Industrial Value Proposition
-
- Process Efficiency:
- Reduces diffusion limitations via tortuous pore channels
- Lowers pressure drop by 20-40% vs. random packing
- Economic Benefits:
- 50% longer replacement cycles than metal supports
- Minimal attrition loss (<0.1% per cycle)
-
4. Typical Specifications
-
- Composition: 99% α-Al2O3 (low Na/K impurities)
- Forms:
- Spheres (3-25mm diameter)
- Rings/honeycombs for structured beds
- Surface Treatments:
- Acid washing for ultra-clean applications
- Pore-size grading (10nm-5μm)
Application
nert Alumina Porcelain Balls: Critical Catalyst Support Applications
1. Primary Industrial Applications
-
- Petroleum refining (hydroprocessing reactors)
- Chemical processing (synthesis reactors)
- Fertilizer production (ammonia converters)
- Environmental protection (emission control systems)
2. Core Functional Properties
| Property |
Technical Specification |
Benefit |
| Mechanical Strength |
250-300 MPa crush strength |
Supports catalyst beds without deformation |
| Thermal Stability |
Stable up to 1600°C |
Maintains integrity in exothermic reactions |
| Chemical Resistance |
pH 1-14 compatibility |
Withstands corrosive process environments |
| Porosity |
30-50% void volume |
Optimizes fluid distribution |
3. Key Operational Roles
- Fluid Distribution:
- Creates uniform gas/liquid flow patterns
- Reduces channeling by 30-50% compared to unstructured beds
- Catalyst Protection:
- Absorbs mechanical impact from feed streams
- Prevents catalyst particle attrition
- Process Enhancement:
- Improves reactant-catalyst contact efficiency
- Maintains consistent pressure drop across reactor beds
4. Performance Advantages
- Extended Catalyst Life: Reduces replacement frequency by 40-60%
- Energy Efficiency: Lowers pressure drop by 20-35% versus random packing
- Process Stability: Maintains consistent flow distribution over long
- operating cycles
-
5. Technical Specifications
-
- Standard Sizes: 3mm-25mm diameter spheres
- Material Grades:
- Standard (92% Al2O3)
- High-purity (99% Al2O3) for corrosive applications
- Surface Characteristics:
- Smooth finish to minimize dust generation
- Controlled pore structure for optimal flow dynamics
| Name |
17%-19%ceramic ball |
| Component |
minimum content(%) |
max content(%) |
ordinary content(%) |
| Chemical Component |
AL203 |
17 |
19 |
18 |
| SiO2 |
70 |
77 |
74.9 |
| AL203+SiO2 |
90 |
94 |
93 |
| Fe203 |
/ |
1 |
0.5 |
| TiO2 |
/ |
0.5 |
0.46 |
| CaO |
/ |
0.5 |
0.42 |
| MgO |
/ |
0.5 |
0.38 |
| Na20 |
/ |
2 |
1.12 |
| K20 |
/ |
3.5 |
3.28 |
| leachable iron(%) |
|
≤0.1 |
|
| apparent porosity |
diameter≥10mm |
≤0.4 |
|
| diameter=6mm |
≤1.0 |
|
| diameter=3mm |
≤3.0 |
|
| water adsorption(%) |
acid fastness(%) |
alkali resistance(%) |
specific bulk weight
(g/cm3) |
Bulk density(kg/cm3) |
Moh's hardness |
| <2.0 |
>90 |
>85 |
1.3-1.35 |
2300 |
>6.5 |
heat conductivity coefficient
(w/m2.k) |
specific heat capacity
(J/kg.ºC) |
operation temp max(ºC) |
thermal expansivity (%) (500ºC) |
thermal shock resistance(500ºC
To cold water) |
| 0,9-1.0 |
628-837 |
1050 |
0.2 |
ten times |
| geometrical features |
Specification ( mm ) |
3 |
6 |
10 |
13 |
16 |
19 |
25 |
38 |
50 |
| Minimum compressive strength |
≥0.3 |
≥0.8 |
≥1.0 |
≥2.5 |
≥3.2 |
≥7.4 |
≥8.3 |
≥9.3 |
≥15.4 |
| Size |
Crush strength |
| Kg/particle |
KN/particle |
| 1/8''(3mm) |
>35 |
>0.35 |
| 1/4''(6mm) |
>60 |
>0.60 |
| 3/8''(10mm) |
>85 |
>0.85 |
| 1/2''(13mm) |
>185 |
>1.85 |
| 3/4''(19mm) |
>487 |
>4.87 |
| 1''(25mm) |
>850 |
>8.5 |
| 1-1/2''(38mm) |
>1200 |
>12 |
| 2''(50mm) |
>5600 |
>56 |
Detailed Photos
Inert alumina porcelain ball is widely used in petroleum,chemical industry,fertilizer,environmental protection industries,as the covering and supporting material of catalyst in reactor.its main function is to increase the distribution of gas or liquid,support and protect the active catalyst with low strength,at the same time buffer the impact of liquid and gas into the reactor on the catalyst,to protect the catalyst and improve the distribution of gas or liquid in the reactor.
The main function of inert alumina porcelain ball is to increase the distribution point of gas or liquid,support and protect the active catalyst with low strength.is characterized by high temperature and pressure resistance,low water absorption,stable chemical properties,can withstand the corrosion of acid,alkali and other organic solvents,and can withstand the temperature change in the production process.
Related products
Product Line
Packaging & Shipping
FAQ
Audited Supplier 
){kind=link}