A Detailed Look at Waste Oil Purification, waste lubricating oil purification and recovery.
In modern society, the problem of waste and used materials is gaining awareness, due to media attention and industry focus.
In ancient times most waste was “natural”, excluding the “alien picnic” theory, but these days, most waste comes from artificial sources, with industrial waste being a large part of it.
Focusing specifically on waste oil disposal, admittedly, this non-biodegradable product is often neglected in terms of recycling due to the cost of the operation. When businesses look for methods of waste oil disposal, they do not always take into consideration safety or even legal issues of the method. At times, news about oil dumps into the sea or into landfills is more common than advertising of waste oil regeneration.
Statistically, about 4.84 million tons of lube materials were used in the EU in 2013 (65% automotive and 35% industrial oil). In Europe in general, about 25% of oil is disposed of, 75% is collected, of which 25% is regenerated, 49% is used as fuel and only 1% is destroyed entirely.
This data appears to demonstrate that a comprehensive decision on waste oil recycling has been made. A quarter of the oil is purified and regenerated. Such recycling, being a safe process, results in a product which is not inferior to original oil.
Beside the ability to restore used oil, this process allows to cut expenses on purchasing new oil, making investment into oil purification systems viable. The process is also environmentally friendly, a factor increasingly important in modern times.
The process of used oil processing can be roughly divided into five stages. The first is to remove particulate matter from the oil by filtration. This measure is largely preventive for new oil, protecting industrial machinery from contaminants, which may enter with the oil after transportation. In a comprehensive oil purification process, filtration is only the first preparatory stage.
The second stage is to heat the oil to remove water, one of the main factors of oil’s aging. Free or solved water causes oil oxidation and will cause corrosion or oxidation of internal components of the equipment.
The chemical stage involves using coagulants to precipitate contaminants and remove the sediment. It is also possible to use adsorbents which can capture the remaining moisture or contaminants.
The fourth stage is focused on removing gasoline from the oil which is an environmental requirement.
The fifth and final stage is vacuum and heating the oil to remove gases and moisture along with all remaining contaminants.
The finished product, clarified and regeneration oil, can be resold in the market or reused. The problem of oil disposal is solved, and the business receives a pure product with excellent quality.