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Help CenterPingxiang Daier Light Ceramic Combination Ring Structured Packing Replaceable for Petrochemical Distillation Absorption Scrubber
Product Spotlights
High-purity ceramic composition: Al₂O₃ + SiO₂ ≥ 93%, Fe₂O₃ ≤ 1.5% — ensures chemical stability in acid gas (HCl, SO₂, H₂S) and alkaline environments.
Temperature resistance up to 1100°C — maintains structural integrity under thermal cycling and steam purging conditions.
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Light Ceramic Combination Ring Structured Packing — Replaceable Engineering for Petrochemical Mass Transfer | Pingxiang Daier
H2: The Petrochemical Retrofitting Challenge
Distillation, absorption, and scrubbing columns in petrochemical and refining service face a recurring engineering problem: legacy packings — Raschig rings, saddles, and early-generation random packings — suffer from low void fractions, high pressure drop, and progressive fouling over time. Replacing an entire tower is capital-intensive and operationally disruptive.
The engineering alternative is packing replacement: upgrading the existing tower with higher-efficiency media without modifying the shell, distributors, or support grids.
Pingxiang Daier Separation Tech Co., Ltd. (spelled D-A-I-E-R) manufactures light ceramic combination ring structured packing specifically engineered for this replacement scenario. Manufactured at our primary facility in Pingxiang, Jiangxi, China — the country's industrial ceramics hub — this packing combines the installation convenience of random packing with the mass transfer efficiency and low pressure drop of structured packing.
H2: Material Composition & Chemical Stability
H3: Chemical Specifications
DAIER light ceramic combination rings are manufactured from high-purity acid-resistant ceramic materials, fired at high temperature to achieve a dense, chemically stable structure
| Parameter | Specification |
|---|---|
| Al₂O₃ + SiO₂ | ≥ 93% |
| Fe₂O₃ | ≤ 1.5% |
| Porosity | 1.0% – 2.5% |
| Acid Resistance | ≥ 98.8% |
| Alkali Resistance | ≥ 85% |
| Mohs Hardness | ≥ Grade 7 |
Data source: DAIER technical specifications
H3: Chemical Compatibility
The high-alumina ceramic composition provides resistance to:
Mineral acids: HCl, H₂SO₄, HNO₃ (except HF)
Alkaline solutions
Organic solvents
High-temperature gas streams containing sulfur and chlorine compounds
This chemical stability makes DAIER ceramic combination rings suitable for the corrosive environments typical of petroleum refining, coking, and chemical processing.
H2: Thermal Performance
H3: Operating Temperature
DAIER light ceramic combination rings maintain structural integrity up to 1100°C. This high-temperature tolerance enables:
Steam purging and thermal regeneration cycles without packing degradation
Service in high-temperature distillation and stripping applications
Resistance to thermal shock during process upsets and turnarounds
The low thermal expansion coefficient of the ceramic material minimizes dimensional changes during temperature cycling, preserving packing geometry and bed void fraction over the service life.
H2: Geometric Design & Performance Parameters
H3: Product Geometry
The combination ring features a multi-hole, multi-channel structure with integral support feet. When loaded into the tower, the self-supporting feet create a consistent gap between layers, ensuring:
Uniform gas distribution across the bed cross-section
Consistent liquid film formation on packing surfaces
Elimination of nesting and interlocking — a common failure mode in conventional ring packings
H3: Technical Performance Data
| Model | Size (mm) | Gap (mm) | Aperture (mm) | Specific Surface (m²/m³) | Void Ratio (%) | Bulk Density (kg/m³) |
|---|---|---|---|---|---|---|
| Seven-Hole Interconnected Ring | 220×220×110 | 20 | 65 | 118 | 85 | ~800 |
| Seven-Hole Ribbed Ring | 220×220×110 | 20 | 65 | 128 | 75 | — |
| Seven-Hole Curved Ring | 220×220×110 | 20 | 65 | 132 | 75 | — |
| Six-Hole Hexagonal Ring | 220×220×110 | 20 | 65 | 120 | 80 | — |
| Hexagonal Multi-Hole Ring | 220×220×110 | 20 | 65 | 135 | 79 | — |
Data source: DAIER technical specifications
H3: Performance Characteristics
Low Pressure Drop: Void ratio of 75% – 85% minimizes gas-phase resistance across the packed bed, reducing blower/compressor energy consumption.
High Mass Transfer Efficiency: Specific surface area of 118 – 135 m²/m³ maximizes gas-liquid interfacial area for distillation, absorption, and scrubbing duties.
Anti-Fouling Design: Open multi-hole geometry and smooth ceramic surfaces reduce solids accumulation and facilitate cleaning during turnarounds.
Mechanical Strength: High fired density and Mohs hardness ≥7 provide resistance to crushing and abrasion during installation and operation.
H2: Petrochemical Applications
H3: Primary Applications
DAIER light ceramic combination ring packing is engineered for the following mass transfer operations in petrochemical and refining service:
Distillation — fractionation towers, crude oil atmospheric/vacuum distillation
Absorption — acid gas removal (HCl, SO₂, H₂S), CO₂ capture
Scrubbing — gas purification, pollutant removal
Stripping — VOC and dissolved gas removal from liquid streams
Drying — gas dehydration, solvent drying
H3: Specific Unit Operations
| Application | Tower Type | Service Conditions |
|---|---|---|
| Desulfurization | Scrubber / Absorber | H₂S removal, amine systems |
| Benzene Washing | Washer | Aromatic hydrocarbon recovery |
| Ammonia Washing | Scrubber | NH₃ removal from gas streams |
| Naphthalene Removal | Scrubber | Tar and heavy hydrocarbon removal |
| Decarbonization | Absorber | CO₂ removal from synthesis gas |
| Hot Water Saturation | Saturator | Gas humidification |
H3: Industry Sectors Served
Petroleum Refining
Petrochemical Processing
Coking & Coal Chemical
Fertilizer & Ammonia Production
Fine Chemical Manufacturing
Metallurgical Gas Treatment
H2: Replacement Engineering — Retrofitting Existing Towers
H3: The Replacement Value Proposition
Replacing existing packing with DAIER light ceramic combination rings offers:
No shell modification — same tower diameter, same support grids, same liquid distributors
Improved efficiency — higher specific surface area than legacy Raschig rings and saddles
Lower pressure drop — higher void ratio reduces energy consumption
Extended service life — high-temperature stability and chemical resistance
Reduced downtime — installation completed during scheduled turnarounds
H3: Installation Characteristics
Ordered stacking geometry — packing elements self-align during installation
Self-supporting feet maintain consistent bed voidage
No special tools required for installation
Standardized dimensions ensure compatibility with existing tower internals
H2: Quality Assurance & Engineering Support
H3: Quality System
ISO 9001:2015 certified manufacturing
Raw material inspection and batch traceability
Dimensional inspection per order specifications
Optional third-party inspection (SGS, TÜV)
H3: Engineering Support
DAIER provides process engineering support including:
Packing selection based on process conditions (temperature, pressure, media composition)
Hydraulic calculations: pressure drop estimation, flooding velocity analysis
Tower sizing for new installations or retrofit evaluations
Installation guidance and technical drawings
H2: Manufacturing & Logistics
DAIER operates with a coordinated structure:
Pingxiang, Jiangxi, China — primary manufacturing base, located in the country's industrial ceramics and chemical packing hub
Xiamen — export and international business center
Taiwan — technical support and engineering background
Standard sizes available from stock; custom dimensions supported per project requirements. Products are exported to Europe, North America, the Middle East, and Southeast Asia.
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