Solutions / A Northwest Petrochemical Enterprise Gasoline/Diesel Dispatch Purification
Refinery & Oil Depot
A Northwest Petrochemical Enterprise Gasoline/Diesel Dispatch Purification
Refinery Dispatch Quality Control
Key outcomes
- Stable Dispatch Pass Rate: Dispatched fuel stably meets standards, reducing terminal return risk
- Efficient Loading Capability: 60m³/h flow rate ensures fast filling of tanker trucks, with no queuing backlog
- Dual-Media Compatibility: Diesel and gasoline customized by type, ensuring targeted purification for different media
Case Study
Stage 1 · Customer Problem
📋 Customer Problem
A Northwest petrochemical enterprise supplying finished fuel to regional distributors faces strict internal control standards for National VI and above emission compliance. At the dispatch stage, multiple quality control pressures converge:
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Secondary Contamination
Finished fuel carries trace rust and impurities during long-distance pipeline transport and storage tank settling, affecting final delivery quality.
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Loading Efficiency Bottleneck
Large shipping volume requires 60m³/h high flow while maintaining filtration precision. Excessive pressure drop extends loading time.
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Gasoline Safety Requirements
Gasoline's strong volatility and flammability demand high sealing performance and explosion-proof safety, with strict static discharge requirements.
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High-Standard Quality Control
To stand out in market competition, fuel must achieve "visually transparent, free of visible impurities" state for all downstream customers.
Stage 2 · Fuel Analysis · NEW
🔬 Fuel Analysis
Fuel sampling at the loading bay revealed contamination from pipeline transport and storage tank settling:
| Metric | Before Treatment | After Treatment | Improvement |
|---|
| ISO 4406 Cleanliness (Diesel) | ~21/19/16 | 14/12/9 | 3-4 levels ↑ |
| ISO 4406 Cleanliness (Gasoline) | ~20/18/15 | 13/11/8 | 3-4 levels ↑ |
| Free Water (ppm) | ~100 | ≤50 | 50% ↓ |
| Visual Appearance | Trace impurities visible | Visually transparent | — |
| Static Accumulation (Gasoline) | Risk present | Zero accumulation | Eliminated |
Values are representative based on refinery dispatch conditions (long-distance pipeline, storage tank settling). Dual-media testing confirmed both diesel and gasoline meet National VI cleanliness requirements after treatment.
Stage 3 · Solution
🛠️ Solution & System Configuration
Jingyuan customized 4 sets of 60m³/h high-standard dispatch purification units with dual-media customization for gasoline and diesel:
Diesel Membrane
Polymer Rigid Composite, 5 μm nominal
Gasoline Filter
Anti-static material, micron-level interception
β Value
≥200 at rated pore size
Skid Design
Full stainless steel, anti-corrosion housing
Regeneration
Gas-pulse regeneration (brief 5-15 min safety pause)
Safety Rating
Flameproof electrical, Class 1 explosion-proof
Monitoring
Intelligent pressure monitoring system
Key design decisions: Diesel uses oleophilic-hydrophobic membrane for particulate interception with synergistic water removal. Gasoline uses special anti-static filter material to intercept micron-level solids without charge accumulation. The heavy-duty skid with flameproof electrical cabinets and safety grounding devices complies with petrochemical Class 1 explosion-proof zone standards.
Stage 4 · Results
📈 Quantified Results
14/12/9
ISO Cleanliness (Diesel)
100%
National VI Compliance
| Metric | Before | After | Improvement |
|---|
| Quality Control Level | Standard-compliant production | Precision quality control | Level upgrade |
| Diesel ISO Cleanliness | ~21/19/16 | 14/12/9 | 3-4 levels ↑ |
| Gasoline Static Risk | Risk present | Zero accumulation | Eliminated |
| Downstream Complaints | Occasional impurity reports | Significantly reduced | ~90% ↓ |
| Per-Vehicle Loading Time | Extended by pressure drop | Smooth 60m³/h operation | — |
The operation marks the enterprise's upgrade from "standard-compliant production" to "precision quality control." The 60m³/h flow rate ensures smooth loading bay operation, with per-vehicle fueling efficiency effectively improved. Downstream customer complaints due to fuel impurities have been significantly reduced.
Stage 5 · Lessons Learned · NEW
💡 Lessons Learned
✅
Key Success Factor
Dual-media customization was the critical decision. Using different filtration technologies for gasoline (anti-static) and diesel (oleophilic-hydrophobic membrane) addressed the unique safety requirements of each fuel type, ensuring both compliance and performance simultaneously.
⚠️
Common Pitfall
Refineries often use the same filtration system for gasoline and diesel, ignoring gasoline's static discharge risk. In Class 1 explosion-proof zones, this creates serious safety hazards. Standard cartridges also fail under high-flow dispatch conditions, causing quality lapses between replacements.
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Replication Advice
Directly applicable to all refineries with National VI and above emission standard commitments. The 4-set parallel configuration can be adapted for refineries with 100-200m³/h total dispatch capacity. The dual-media approach is essential for any facility handling both gasoline and diesel simultaneously.
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Customer feedback
Dispatch quality is our last line of defense. Jingyuan's 60m³/h units allow us to maintain higher cleanliness standards for both gasoline and diesel without sacrificing logistics speed. This is a robust and reliable system that aligns with our refinery's safety and efficiency requirements.
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