A high-efficiency slurry settling agent working through a dual "coagulation + flocculation" mechanism brings ash content from several thousand ppm down below 200ppm with only a trace dosage — leave low-value slurry disposal behind and unlock high-value conversion paths such as needle coke, carbon materials, and low-sulfur marine fuel
In heavy oil fluid catalytic cracking, the slurry oil produced accounts for about 5%-12% of feedstock oil and is rich in high-value aromatics — essentially "liquid gold." Yet because it contains large amounts of micron-scale catalyst powder (ash), its use is limited, it wears out equipment, and it sells cheap:
Traditional filtration and centrifugation methods struggle with micron-scale particles. Efficient ash removal is the key to unlocking slurry oil's value.
| Application | Ash Requirement |
|---|---|
| Needle coke feedstock | <100 ppm |
| Low-sulfur marine fuel blending (RMG grade) | Ash ≤0.10% (national standard) |
| Carbon material/carbon fiber feedstock | Deep purification, low ash |
| Rubber filler oil | Low ash |
| Recycle feed | Protects catalyst, prevents bed plugging |
Untreated slurry oil ash often reaches several thousand ppm — a "deashing" threshold stands between it and high-value applications.
Figures above are typical operating data; actual results vary with slurry properties and dosage — a free sample evaluation is recommended
The core agent uses a unique formulation (based on cationic surfactants, coagulants and special functional components), working through a dual "coagulation + flocculation" mechanism:
The formulation also stabilizes colloidal components, preventing harmful condensation during processing and storage — providing feedstock stability for producing uniform, high-quality needle coke or carbon materials — while offering a synergistic effect on removing some basic nitrogen compounds.
| Item | Value |
|---|---|
| Raw slurry ash | 0.690% (6900 ppm) |
| Treatment conditions | 500ppm dosage · 90℃ · 24h |
| Post-treatment ash | 0.028% (280 ppm) |
| Deashing rate | 93.3% |
Treated slurry oil has extremely low silicon and aluminum content, meeting high-standard marine fuel oil blending requirements directly and laying the groundwork for even higher-end applications. Deashing performance is uniform across samples from the top, middle and bottom of the settling tank, with a high clarified-oil yield.
Low-value fuel oil components are converted into high-value feedstock such as needle coke, carbon fiber, and rubber oil, multiplying added value; marine fuel blending can also command a premium from the quality improvement.
Reduces equipment wear and coking, lowering maintenance costs and downtime risk; protects downstream catalysts and extends their life when recycled.
Skid-mounted equipment means low investment and a short retrofit cycle; investment is typically recovered within a few months through slurry oil value uplift.
Reduces solid waste at the source and improves resource efficiency; full technical support from lab-scale validation through to stable industrial operation.
Send us a slurry oil sample and our lab will deliver measured deashing data and a tailored technical proposal, unlocking the hidden value sitting in your tank