WORP Series – Waste Oil Recycling Plant

The HERING WORP Waste oil recycling plants substantially add to your bottom line by producing high quality base oils from used lube oils through a non-cracking evaporation type front-end treatment coupled with our HERING RCPS for polishing the output oils.

When you consider that you need 160 litres of crude oil to produce 2½ litres of high quality lubricating oil but only 4 litres of used oil to produce the same 2½ litres of the same quality oil then it does not make sense to incinerate or otherwise dispose of used oil. The HERING WORP used oil re-refining system has a comparatively small footprint, generates much of its own fuel from the feedstock being processed and with conversion costs as low as US 10 cents per litre can add up to 3 times the sales value of the oil, once processed. These features combined with the comparatively low investment costs of this type of waste oil re-refining system and the high quality of the output base oils make the WORP from HERING VPT an excellent solution for your re-refining needs.

Non-Cracking Evaporator (NCE) technology converts waste oil into high value base oils

The WORP waste oil recycling plant from HERING VPT can run with any type of used lube oils as input – including, but not limited to, used engine oils, used spindle oils, waste turbine lube oils. After flash evaporating water and light ends from the waste oil, the residual hydrocarbon stream is smeared in a thin-film over a large surface area, under vacuum. By lowering the boiling point of the oil fractions, as they are subject to high vacuum, a number of cuts can be efficiently and economically separated and condensed, typically producing one medium viscosity base oil (~300N) or a low viscosity (~100N) and high viscosity (~500N) cut. The residue sludge can be sold as an asphalt extender, further increasing revenue from the processed waste. Base oil yields of 70% to 80% of the feedstock volume are typical, the balance is made up of water, light ends – which provide fuel for the NCE– and asphalt extender.

Further processing of the base oil using a HERING RCPS Reactivation Clay Polishing System stabilizes the oil against oxidation and improves odor of group I and group II base oils

The base oil produced by a standard evaporation system will usually darken with time, potentially reducing its resell value. In the HERING WORP Waste Oil Recycling System, the base oil is stabilized and polished to further enhance its properties. The HERING RCPS clay finishing system is the perfect solution for this, and, thus, an essential part of our waste oil recycling plant. The finishing treatment yields high quality group I & group II base oils while requiring moderate capital investments and producing low amounts of waste that can be directly disposed at a local landfill without pretreatment. This makes RCPS finishing stage of the HERING WORP Waste Oil Recycling Plant an excellent economic & environmental proposition, see our base oil finishing system section for more details.

HERING VPT offers all levels of technical, engineering and commercial support to specifically tailor a customized WORS waste oil recycling system to your needs

From day 1 HERING supports your organization through its wide-ranging knowledge. We are able to provide full commercial justifications, tailoring essential ROI calculations to your particular case. Together, we will find the right HERING WORP used oil re-refining plant which fits your needs perfectly. As an illustration of the range of HERING WORP used oil recycling plant sizes available, consider the following table. These are broadly considered to be low throughput, medium throughput and high throughput – intermediate flow rates are available, too, of course.

ThroughputAnnual Throughput (MT)Flow Rate (LPH)(GPH)Footprint (sqm)*
Low2,000 – 3,000250 (65)450

Medium12,000 – 15,0001,500 (400)850
High30,000 – 40,0004,000 (1,100)1,250
* of NCE and RCPS units only. No tanks farms, outbuildings or other civil engineering accoutrements are included

A large transport trucking company might easily generate over 200,000 litres of used oil per month. A Low throughput system could not only provide significant reductions on the lubricating oil bill but, subject to local regulations, could provide diesel fuel for the trucks. An RCPS designed for sulphur reduction will easily remove sulphur down to <300 PPM from typical waste engine oils. Medium throughout systems are typically sought after by regional oil recycling companies that wish to supply base oil to blenders (or use their own blending plant), polished and colour enhanced recycled lube minimizes the amount of brightstock needed. High throughput systems are typically used by national recyclers and those organizations with a large collection area.