Transformer oil is an excellent insulator which is stable at high temperatures and also serves as a coolant. It also suppresses corona arcing and discharge. While disposal of transformer oil may cause environmental problems, reuse and recycling of the oil is considered as a better option to derive energy and value added products from waste substances besides minimizing disposal issues.
Benefits of waste oil recycling in transformers
Recycling of transformer oil in controlled facilities minimizes environmental and safety risks associated with disposal of Polychlorinated Biphenyls (PCBs) which are present in transformer oil. The reclamation process involves cleaning, drying and adsorption so that colour, acid and sludge are properly removed.
Efficiency of Hering WORP in recycling transformer oil
Hering waste oil recycling plant produces high quality base oil from used lube oil through non cracking evaporation type front-end treatment which is paired with Hering RCPS or AMPS polishing for output oils.
Against using 160 litres of crude oil to produce 2.5 litres of high quality lube oil, it is definitely a profitable move to use 4 litres of used oil to give the same results. Apart from effectually preparing quality oil, Hering WORP also has a small footprint with conversion costs which can add up to 3 times sales value of the oil, when it is processed. WORP waste oil recycling plant also refines used engine oil, spindle oils and waste turbine oils. After producing medium, high and low viscosity oil, the residue sludge is sold as asphalt extender thus adding to the profits procured from recycling waste transformer oil.
Hering employs its expansive knowledge to tailor ROI calculations according to client requirements and use the plant that fits the needs. The Hering WORP plants are classified by annual throughput, flow rate and footprint per square meter. Once completed, the back-end system or Hering RCPS improves colour, odour and sulphur content of the waste oil distillates and optimizes value of the output oil. Apart from removing unwanted chemical substances, it removes sulphur from 2000 PPM to 300 PPM in single pass and fulfills maximum refining standards of output oil.
The operating mode adapts to different input oil qualities where parallel mode operates in single pass while series mode works on triple pass. Client participation is encouraged in manufacture of WORP from engineering approval to start up.
Degradation of transformer oil
Transformer oil deteriorates quickly in high temperatures and moisture enhances ageing in the oil. Presence of other substances and metals degrades the oil. When subjected to thermal and electric stress in oxidizing atmosphere, the transformer oil loses stability and increases acidity finally producing mud. Transformer oil deterioration occurs due to development of internal pressure or due to frequent change in operating voltage levels.
When by-products of oil oxidation occur, the transformer’s paper insulation is severely affected. Such oxidation is boosted by heat, oxygen moisture and presence of metals like copper. Tests like dissolved gas in oil analysis, screen tests, water content, metal in oil and PCB content test, decipher the fitness of the oil and how far the oil has progressed towards the end of its service life.
Media contact
Company Name: Hering VPT
Contact Person: Detlev Bastek
Email: Send Email
Phone: +49 9831 8834666
Address: D-91550 Dinkelsbuhl,Ernst-Schenk-Str.10
Country: Germany
Website: http://www.hering-vpt.com/