UNKA ENGINEERINGEPC CONTRACTORUNKA ENGINEERING develops waste oil re-refining plants for used lubricating oils and compatible oily residues. Feed acceptance, dehydration, vacuum separation and finishing are selected from representative analysis, with configurations from 10 to 500 metric tonnes per day subject to the approved Design Basis.
Concept-level throughput equivalents for modular or field-erected waste-oil re-refining facilities. Final yield, utility consumption, metallurgy and performance guarantees require representative feed analysis and an approved Design Basis.
| Nominal Feed metric t/day | Indicative Liquid Volume m³/day | Approximate Equivalent bbl/day | Annual Feed Mass t/year | Annual Liquid Feed m³/year |
|---|---|---|---|---|
| 10 | 11.36 | 71 | 3,300 | 3,750 |
| 25 | 28.41 | 179 | 8,250 | 9,375 |
| 50 | 56.82 | 357 | 16,500 | 18,750 |
| 100 | 113.64 | 715 | 33,000 | 37,500 |
| 250 | 284.09 | 1,787 | 82,500 | 93,750 |
| 500 | 568.18 | 3,574 | 165,000 | 187,500 |
Conversion basis: indicative waste-oil density = 0.88 t/m³; 1 bbl = 0.158987 m³; therefore 1 metric ton is approximately 7.15 bbl. Annual throughput assumes 330 operating days. Actual volume and barrel equivalents vary with the approved feed density and temperature and are not contractual guarantees.
Segregated used-lubricating-oil receiving, sampling, laboratory acceptance, coarse/fine filtration, free-water separation and controlled feed blending. Halogens, PCBs, metals, ash and water are confirmed against the project feed specification before processing.
Dehydration and light-ends removal → vacuum distillation → thin/wiped-film evaporation → optional solvent extraction → solvent recovery → clay, adsorption or hydrotreating polishing selected by required base-oil quality.
Project-specific light, medium and heavy base-oil cuts; recoverable fuel/distillate fraction; asphaltic or heavy residue; separated water and light ends. Product cuts and yields are established from feed characterization and pilot or laboratory data.
Fuel, steam or thermal oil, cooling medium, electric power, instrument air, nitrogen, vacuum system, solvent storage/recovery, oily-water handling, tankage and loading interfaces are balanced for normal, start-up, shutdown and turndown cases.
Receiving, segregation, dehydration, light-ends removal, vacuum processing and finishing. The operating sequence, recycle paths, start-up/shutdown cases and normal/turndown behavior are defined before equipment finalization.
Feed reception, dehydrator, vacuum column/TFE, condensers, strippers, extraction equipment, final filters, blending manifold and product-transfer interface. Materials, design margins, maintainability, isolation, access, lifting and spare philosophy are coordinated with the approved operating cases.
Approved feed analysis, capacity, product targets, operating envelope, site data, utilities, logistics constraints and client battery limits.
Feed acceptance criteria, mass balance, PFD/P&ID, equipment design, emissions and residue-management documents. The package also includes line/equipment lists, relief and utility summaries, layouts or 3D interfaces, vendor-document requirements, inspection plans and commissioning inputs as applicable.
Process safeguarding, alarms/interlocks, relief and flare interfaces, fire and gas requirements, hazardous-area design, HAZOP/SIL actions and emergency shutdown philosophy.
Used motor oil and compatible industrial lubricant recovery. Capacity, product quality, consumption and emissions commitments are confirmed only after the representative feed and project Design Basis are approved.
ASME, API, NFPA, environmental permits and local waste rules. The contractual code basis is selected by destination and client specification. ASME/API/TEMA, EN/DIN and GOST/EAC requirements are not mixed without an approved code-equivalency and authority review.
ASME, API, NFPA, environmental permits and local waste rules.
Each process section is engineered from the approved feed characterization, required product specification, site utilities and contractual battery limits. Select a unit for its process principle, equipment, controls, deliverables and applicable standards.
Receiving, Segregation & Feed AcceptanceSeparate incoming used oils by source and contamination; sample, test, meter and route only accepted feed to dedicated tanks.OPEN UNIT PAGE →
Dehydration & Light-Ends RemovalControlled heating and flash separation remove free/emulsified water, gasoline-range material and volatile contaminants before vacuum service.OPEN UNIT PAGE →
Vacuum DistillationLow-pressure fractionation recovers lubricant-range distillates while limiting thermal degradation, coking and colour formation.OPEN UNIT PAGE →
Thin-Film EvaporationA wiped or thin-film evaporator minimizes residence time for heat-sensitive heavy oil and separates recoverable distillate from asphaltic residue.OPEN UNIT PAGE →
Selective Solvent ExtractionA selective polar solvent removes aromatics, oxidation products, additives, colour bodies and unstable compounds from the recovered oil fraction.OPEN UNIT PAGE →
Raffinate & Extract StrippingDedicated strippers recover solvent from both refined-oil and extract phases for closed-loop reuse and controlled residual solvent.OPEN UNIT PAGE →
Fine FiltrationDuplex, cartridge or pressure filtration removes suspended solids and protects downstream adsorbent beds and final product quality.OPEN UNIT PAGE →
Adsorptive PolishingActivated clay, carbon or tailored adsorbent treatment improves colour, odour, oxidation stability and trace-contaminant control.OPEN UNIT PAGE →
Product Finishing, Blending & Quality ReleaseRecovered base-oil cuts are metered, blended, finally filtered, sampled and released against approved viscosity, flash point, water, colour and cleanliness limits before battery-limit transfer.OPEN UNIT PAGE →