The Technical Challenge of Diesel Supply Chain Contamination
In modern industrial diesel supply chains—ranging from refineries and logistics hubs to terminal storage—fuel quality is consistently threatened by three primary contaminants: mechanical particulate matter (weld slag, rust, dust), precipitated gums (oxidation products), and residual moisture. Traditional filtration often relies on disposable fiberglass or paper media. While these may meet basic standards, they frequently suffer from “bypass” under pressure fluctuations or premature clogging when facing soft gums, leading to unstable output quality and high operational expenses (OPEX).
For Tier 4 and Stage V high-pressure common rail (HPCR) engines, maintaining an ISO 4406 14/12/9 cleanliness level is not a luxury but a requirement to prevent injector wear and sticking.
JY-DL60: A Technical Alternative for Bulk Fuel Purification
The JY-DL60 is a high-flow industrial filtration system designed to process 40–60 t/h of diesel in a single pass. Unlike conventional depth filtration, the JY-DL60 utilizes an “Out-to-In” dead-end filtration mechanism. This ensures that 100% of the raw fuel is forced through the membrane layer, eliminating bypass risks and ensuring consistent output quality.
1. Core Component: The Modified Tubular Membrane
The system is built around JINGYUAN’s polymer rigid composite membrane. These membranes feature asymmetric gradient pores designed for a dual-action “screening + adsorption” effect.
- Physical Interception: The rigid structure maintains fixed pore sizes even under pressure fluctuations, accurately capturing particles down to 2–20 µm.
- Adsorption of Gums: The three-dimensional labyrinth structure utilizes surface energy to physically adsorb soft gums and oil sludge that typically penetrate or blind traditional media.
2. Phase Separation for Water Removal
Diesel contamination often involves “micro-water” or free moisture, which accelerates oxidation and corrosion. The JY-DL60 membrane surface is modified to be oleophilic and hydrophobic. By utilizing the difference in interfacial free energy, the system intercepts water droplets and allows them to settle naturally for drainage, achieving water removal without the need for heating or chemical additives.
Operational Efficiency: The Gas Pulse Regeneration Logic
A significant limitation of traditional bulk filters is the requirement for frequent element replacement, which adds to hazardous waste disposal costs. The JY-DL60 addresses this through a nitrogen pulse backwash system.
- Mechanism: When the differential pressure reaches a set limit (typically around 0.5 MPa), a 0.4–0.6 MPa compressed gas pulse is triggered from the inside out.
- Result: This instantaneous burst dislodges the filter cake from the outer surface of the membrane, restoring flux to over 95% of its initial state.
- Longevity: This regeneration cycle allows a single set of membrane elements to remain in service for 2–3 years, effectively transitioning the system to a “zero-consumable” operational model.
Strategic Application Scenarios
The JY-DL60 system is engineered for integration across the diesel supply chain:
- Refineries & Blending: Intercepting weld slag and catalyst powder post-hydrogenation or pre-filling.
- Logistics & Terminals: Real-time purification during rail or tanker unloading, matching standard loading arm flow rates without increasing wait times.
- Critical Reserves: Periodic “fuel polishing” for strategic oil depots, data centers, and power plants to counter long-term fuel degradation.