This DB-series batch distillation platform is configured for characterized waste engine oil. The confirmed equipment-table range is 5-8 or 8-10 tonnes per day, with a reference oil yield of 80-90% and gross equipment weights of 55 or 60 tonnes. Actual fractions, product quality, heating duty and pressure configuration require feed analysis and a signed process specification; a vacuum stage is not promised unless it is included in that project specification.
How an Atmospheric Vacuum Waste Engine Oil Distillation Plant Works
- Direct catalytic distillation - waste oil is pumped into the processor and catalytically heated to vaporize the oil.
- Vapor reforming and fractionation - the vapor reacts with catalysts, condenses, and is fractionated into base fuel oil.
- Fuel oil refinement - the base oil passes through sedimentation, filtration, chemical treatment and additive blending.
- Self-powered gas recycling - purified non-condensable gas is returned to fuel the processor burner, saving about 30% of energy.
- Emission-controlled flue gas treatment - alkali spray neutralization and an adsorption tower clean the flue gas before discharge (configured for project-specific emission-control requirements).
The atmospheric section first removes light impurities; the vacuum section then fractionates the main components under negative pressure at low temperature, avoiding high-temperature cracking and preserving base-oil quality. A catalyst system breaks down impurity molecular chains to cut residual sulfur and chlorine, while PLC control adjusts temperature, pressure and liquid level in real time - with remote control and data recording.
Models and Specifications
| Model | DB-8 | DB-10 |
|---|---|---|
| Capacity | 5-8 t/day | 8-10 t/day |
| Furnace size | Φ2500 × 8800 × 18 mm | Φ2500 × 11000 × 18 mm |
| Gross weight | 55 t | 60 t |
| Working power | 20-30 kW | 20-30 kW |
| Reference oil yield* | 80-90% | 80-90% |
| Heating method | Direct heat / hot air | Direct heat / hot air |
| Working type | Batch | Batch |
| Source-table pressure | Normal pressure | Normal pressure |
| Noise target | ≤85 dB | ≤85 dB |
| Shipping | 1×FR + 2×40' HQ | 1×FR + 2×40' HQ |
Both models are batch-type, horizontal static designs with circulating-water cooling. The source table lists normal pressure; any vacuum-stage configuration must be confirmed in the signed process specification. Installation footprint is approximately 35 m × 20 m, with 1-2 operators per shift.
Expected Output Fractions
- Recovered base oil (80-90% reference) - light and heavy components separated via precise temperature control.
- By-product combustible gas - separated and reused for heating, saving about 30-40% of fuel costs.
Key Equipment Features
- Multi-stage distillation tower with precise temperature control for an 80-90% reference base-oil recovery rate.
- Atmospheric + vacuum synergy: vacuum low-temperature fractionation avoids high-temperature cracking.
- Low-temperature catalytic cracking removes residual sulfur and chlorine for higher purity.
- Advanced decolorization for lighter, cleaner base oil.
- PLC intelligent control with real-time monitoring and remote operation.
- Premium output quality - strict process control for consistent fuel oil to be tested against the buyer's required product specification.
- Efficient heating and maintenance - rapid non-stick heating walls minimize cleaning downtime.
- Triple-layer safety - submerged arc welding + ultrasonic NDT + dual alarm system.
- High-yield condensing system - enhanced cooling boosts oil output and extends service life.
- Centralized automation - control desk monitors the full production line in real time.
Atmospheric & Vacuum vs Atmospheric Distillation
| Atmospheric & Vacuum (this line) | Atmospheric | |
|---|---|---|
| Pressure | Atmospheric + vacuum stages | Normal pressure only |
| Vacuum pump | Required | Not required |
| Structure | Multi-stage tower | Simpler structure, easier maintenance |
| Best for | Higher-grade fractionation, sulfur/chlorine removal | Primary processing, lower operating cost |
Choose atmospheric & vacuum when you need a higher base-oil recovery rate and sulfur/chlorine removal; choose atmospheric for a simpler, lower-cost primary treatment.
Frequently Asked Questions
- How does the distillation process work? Engine oil is distilled into base oil.
- What feedstock can this plant process? Waste lubricants such as engine oil and gear oil.
- What is the recovery rate? 80-90% reference base oil recovery.
- What is the delivery time? The delivery schedule and departure port are confirmed in the commercial quotation.
- What payment methods do you accept? Mainly T/T; other methods on request.
- Are you a factory or a trading company? We operate our own factory in Shangqiu City, Henan Province, China.
- What warranty and after-sales support do you provide? About 1 year (negotiable), with replacement parts, maintenance support and on-site installation by our engineers - support scope defined in the supply contract.
- What information do I need for a quote? Raw material type, daily processing capacity and project location.
Get a Configuration Quote
Send your feedstock type, daily volume and project location, and a Pyrojin engineer will prepare a matching line configuration, layout and investment estimate.
Equipment and project images
