High-Efficiency Coalescing Pressure Deoiler: Less Space, Higher Efficiency, Lower O&M for Oily Wastewater Treatment
For petrochemical and refining companies, oily wastewater treatment is not only an environmental necessity but also a very real line in the cost ledger. Bulky equipment drives up land costs; long retention times mean low treatment efficiency; heavy manual operation pushes O&M expenses higher. SINOKLE's high-efficiency coalescing pressure deoiler sets out from exactly thiscost ledger to help companies save space, raise efficiency and cut O&M costs.
What Value It Delivers
Less Space: CFD - optimised design makes the unit small yet powerful
The unit adopts a bidirectional flow design and, with the help of CFD (computational fluid dynamics) optimises the internal flow field, achieving a sound flow layout inside the deoiler and substantially reducing vessel size while improving separation efficiency. Combined with high-efficiency coalescing internals, oil droplets grow larger and retention time shortens, so the unit is smaller and more compact overall and can significantly cut the footprint and civil works investment of the wastewater treatment system.
Higher Efficiency: Coalescing Technology Makes Oil-Water Separation fast and clean
The product comprehensively applies Stokes principles and coalescing (coarse-graining) technology, drawing on advanced overseas technology and ideas for optimisation and improvement; it is a patented SINOKLE product. The high-efficiency coalescing internals make fine oil droplets merge and grow rapidly, greatly shortening droplet retention time and markedly improving oil-water separation efficiency, creating favourable influent conditions for downstream process stages.
Lower O&M: Fully Automatic, Enclosed and Pressurised steady and economical
Fully automatic control keeps the unit running smoothly and is easy to operate, reducing manual intervention and O&M costs; the enclosed pressurised deoiling design runs sealed and under pressure, is safe and reliable with no risk of gas leakage, and adapts to complex conditions such as electric desalting effluent and tank-farm black water, ensuring long-term stable operation of the system.
Project Cases: A Vote of Confidence from the PetroChina System
The high-efficiency coalescing pressure deoiler has been deployed in a number of PetroChina projects, often combined with CDFU swirl dissolved-air flotation to form a complete process chain:
· An oily wastewater treatment project at a PetroChina crude oil storage depot, coalescing pressure deoiler + CDFU, capacity 50 m³/h, 2026.
· A deoiling skid project for electric desalting effluent at the atmospheric-vacuum unit of PetroChina Yunnan Petrochemical, coalescing pressure deoiler + + CDFU, capacity 105 m³/h, Kunming, Yunnan, 2025.
· An electric desalting wastewater and tank-farm black water treatment project at PetroChina Urumqi Petrochemical, coalescing pressure deoiler + + CDFU (two-stage), capacity 150 m³/h, Urumqi, Xinjiang, 2023.
· An electric desalting wastewater treatment project at a petrochemical company in Shandong, coalescing pressure deoiler + + CDFU, capacity 30 m³/h, Weifang, Shandong, 2025.
From crude oil storage depots to electric desalting effluent, spanning treatment capacities from 30 to 150 m³/h, and project after project testifies to the reliability and applicability of the product.
Conclusion
In oily wastewater treatment, choosing the right equipment saves real money. The high-efficiency coalescing pressure deoiler helps companies meet environmental standards while optimising system footprint and operating costs, delivering a win-win of treatment performance and economic benefit. SINOKLE's high-efficiency coalescing pressure deoiler answers industry demands with a smaller footprint, higher efficiency and lower O&M, and backs it with several typical projects in the PetroChina system - a reliable choice for oily wastewater treatment in refining and chemical enterprises.
