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Product classification

Ring Shape Catalyst Carrier

Catalyst Carrier

This product was made from activated alumina and false monohydrate aluminum adhesive. It owns stable surface, good crushing strength, low abrasion, suitable pore shape, low impurity, good active component impregnation.

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Product Description

Alumina Raschig Ring Catalyst Carrier & Ceramic Support

Standard Shaped Catalyst Support Classic Cylindrical Geometry / High Void Fraction

Alumina Raschig Ring Catalyst Carrier (拉西环载体)

Name: Ring Shape Catalyst Carrier
SKU: 0

As the foundational benchmark of industrial packing and catalyst supports, the Raschig Ring features an equal height-to-diameter hollow cylindrical design. It delivers exceptional bed voidage, ultra-low fluid resistance, and dependable mechanical durability for heavy-duty fixed-bed chemical reactors.

Geometric Profile

Hollow Cylinder (OD = H)

BET Surface Area

100 – 240 m²/g

Bed Voidage

≥ 55% – 70%

Mechanical Strength

High Crush Resistance

Geometric Profile & Fluid Dynamics

Visualizing the classic hollow cylinder structure and its role in minimizing pressure drops.

Figure 1: Standard Cylindrical Raschig Ring Geometry (Outer Diameter equals Height)

Symmetric Hollow Cylinder (对称空心圆柱) 6mm – 50mm

The equal inner/outer dimensions ensure random packing creates uniform void channels, preventing gas-liquid channeling and sharply reducing system energy consumption.

Target Applications & Reactor Suitability

Trusted globally across petrochemical refining, gas sweetening, and environmental scrubbing units.

Refinery / Hydroprocessing

Hydrotreating & Hydrocracking

Widely utilized as base support layers or active catalyst carriers in massive fixed-bed reactors processing heavy petroleum fractions.

Prevents catalyst bed compaction
Accommodates high gas/liquid velocity
Resists high-temperature coking

Gas Processing / Synthesis

Gas Absorption & Stripping

Acts as an inert or active substrate in mass-transfer towers, acid gas removal units, and synthetic ammonia conversion loops.

Maximizes gas-liquid contact area
Stable against corrosive components
Lowers blower and pump loads

Environmental Protection

Catalytic Oxidation & Scrubbing

Deploys as an economic, durable carrier for VOC abatement units, thermal oxidizers, and industrial tail-gas treatment systems.

High thermal shock resistance
Long service life in harsh media
Cost-effective industrial scale-up

Technical Specifications (TDS Data)

Standard physical and chemical property benchmarks for Alumina Raschig Ring Carriers.

Technical Property	Standard Specification Range	Customization Options
Primary Alumina Phase	Alpha-Al₂O₃ / Gamma-Al₂O₃	High-purity inert Alpha grades available
Standard Dimensions (OD × H)	6×6 mm, 10×10 mm, 15×15 mm, 25×25 mm, 50×50 mm	Custom wall thicknesses & sizes
BET Surface Area	100 – 240 m²/g (Gamma) / < 1 m² (Alpha)	Tailored porosity per requirement
Pore Volume	0.40 – 0.65 mL/g	Optimized pore-size distribution
Single Particle Crush Strength	≥ 90 – 200 N (Size Dependent)	Heavy-duty reinforced variants
Bulk Density	0.60 – 0.90 g/mL	Calibrated for specific reactor weight
Al₂O₃ Purity	≥ 99.0 wt% (Inert) / ≥ 98.0 wt% (Active)	Low silica / low iron grades
Acid & Alkali Resistance	Excellent chemical inertness	Suitable for extreme pH conditions

Core Engineering Advantages

Why the Raschig Ring remains an enduring industry standard for fluid-bed operations.

1. Exceptional Bed Voidage

The open cylindrical geometry guarantees high void fractions (55%–70%), allowing smooth dual-phase fluid passage without flow restriction.

2. Minimal Pressure Drop (ΔP)

Drastically reduces frictional resistance across large-scale tower columns, saving substantial electrical and compression costs.

3. Structural Robustness

Balanced wall thickness and uniform radial distribution provide remarkable mechanical crushing strength against heavy bed loads.

4. High Thermal & Chemical Inertness

Extremely stable under extreme thermal swings and hostile chemical environments, preventing structural degradation or catalyst poisoning.

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