If your oil is not listed
These cases are grouped by oil and by failure mode. Describe the condition and it can be judged against these records: vacuum, membrane, centrifugal or electrostatic.
All cases
Steel Industry · 2020
Phosphate-ester fire-resistant oil — captive power station
The measured index came back down to 26, inside limit.
Steel Industry · 2020
Oil-film bearing oil — steel mill
200 litres of water came out on the day it was started; after a second ingress, over a tonne was drawn off across six days.
Steel Industry
Hydraulic oil emulsified by water ingress — steel plant, south-west China
One pass on the nano-screening unit brought the contaminated oil to NAS 7.
Steel Industry
Fatty-acid-ester fire-resistant fluid held at 800 ppm — steel plant, north-east China
Chronic water ingress had emulsified the fluid year after year. After treatment, water content held at 800 ppm.
Power Generation
No.46 turbine oil with a leaking shaft seal — power station
A damaged shaft seal admitted 20 kg of water a day. The oil was treated online, without taking the unit down.
Steel Industry
Contaminated gear oil brought back to reuse standard — steel plant, Shandong
Gear oil contamination was causing repeated equipment failure. Deep purification restored it to the reuse standard.
Petrochemical
Lithium film production oil — decolourising regeneration
Run through the decolourising system, the oil met the purification and regeneration target.
Collected waste engine oil — decolourising regeneration
Service-station engine oil collected by a waste-oil processor was regenerated to the expected standard.
Construction Machinery
Hydraulic station far above the contamination limit — crankshaft manufacturer
The station was reading far outside its limit. After treatment the measured figure came back at NAS 6.
Construction Machinery
Vacuum pump oil changed out repeatedly — domestic appliance manufacturer
Water content was over limit often enough that the oil was replaced again and again. Treatment reached NAS 3 and 39 ppm.
Steel Industry
2.2 tonnes of water separated in a single day — oil-film bearing oil, south-west China
Mobil 525 oil-film bearing oil took in a large volume of water. The unit separated 2.2 tonnes within one day.
11
Service cases on record, each with an instrument reading
66.7 → 26
Varnish index of phosphate-ester fire-resistant fluid, before and after purification
NAS 3 / 39 ppm
Cleanliness and water content of vacuum pump oil after treatment
2.2 t
Water separated out of oil-film bearing oil in a single day
One day, 2.2 tonnes of water
Mobil 525 oil-film bearing oil at a southwest steel plant had taken on a large amount of water. With nano-screening purification equipment, 2.2 tonnes of water were separated out within a single day.
Grouped by the oil that failed
Sorted by the fluid they started with. The tag on each one is the reading the instrument gave once the oil had been through the machine.
NAS 7 / NAS 6
Hydraulic oil
A south-west steel plant emulsified its hydraulic oil and reached NAS 7 in one pass. A crankshaft producer came back to NAS 6.
Online treatment
Turbine oil
A power plant No.46 turbine oil, emulsified by ingress through a failed shaft seal, handled online as the record states.
66.7 → 26 · 800 ppm
Fire-resistant fluid
Phosphate-ester and fatty-acid-ester fluids: a varnish index taken from 66.7 down to 26, and water held at 800 ppm to the production standard.
200 L · 2.2 t
Oil-film bearing oil
Two steel plants, two very different readings: 200 litres separated on the day a unit was commissioned, and 2.2 tonnes in a day at another.
Reuse standard
Gear oil
Contaminated gear oil that had been causing repeated failures, brought by deep purification up to the reuse standard the customer set.
NAS 3 / 39 ppm
Vacuum pump oil and waste oil
Vacuum pump oil repeatedly over the water limit at an appliance manufacturer, back to NAS 3 and 39 ppm. Collected waste engine oil put through a decolourisation system for regeneration.
Where they ran
The industries behind the records.
01
Steel captive power station
02
Steel oil-film bearings
03
Power plant turbine units
04
Lithium film production
05
Appliance manufacturing
06
Crankshaft manufacturing
07
Waste oil disposal and recycling
The questions we are asked most
These come up on almost every enquiry, whatever the industry.
The same oil, different results at different plants. Why?
Because the outcome depends on the ingress rate, the duty cycle and the target — not on the oil name alone. Two plants running the same grade can need different machines and different treatment intervals.
Which machine handled a given case?
Each record names the treatment, not the model. Equipment is configured per application, so flow rate, power and dimensions follow from the oil, the ingress rate and the target reading.
What do you need to judge our case?
Oil type and viscosity, where the water or particulate is coming from and how fast, the reading you have now, and the reading you need. With those four the case can be placed against the records above.
Where do the numbers come from?
Each figure is the instrument reading taken on site at the end of treatment: a cleanliness class to ISO 4406, a water content, a varnish index, or a volume of water separated out. They are reported as measured, without recalculation or rounding.
Does this apply to our industry?
These records cover steel, power generation, lithium film, appliances, crankshaft manufacturing and waste-oil disposal. Send the oil type, viscosity, ingress situation, current reading and target, and the route can be judged against the same yardstick.
