How to recycle waste mineral oil? Take you to understand its "oil yet new" regeneration journey

March 27, 2024

How to recycle waste mineral oil? Take you to understand its "oil yet new" regeneration journey

You know what? Mineral oil is the most widely used chemical substances in the world, the production of waste mineral oil almost involves the various industries of the national economy, 1 ton of waste mineral oil can pollute 1 million tons of drinking water, China's annual waste mineral oil production total of about 30 million tons, and maintain a growth rate of 3%, while the waste mineral oil in the metamorphic part of less than 10%.

What is waste mineral oil?

Waste mineral oil refers to the mineral oil extracted and refined from petroleum, coal and oil shale, which has changed its original physical and chemical properties due to impurity pollution, oxidation and heat in the process of exploitation, processing and use, and can no longer be used.

These are mainly from the oil sludge and oil feet produced by oil extraction and refining, motor vehicle maintenance and mechanical processing and manufacturing replacement oil, hydraulic oil and mineral oil storage process produced precipitates, the main components include C15-C36 alkanes, polycyclic aromatic hydrocarbons (PAHs), olefin, benzene series, phenols and so on.

According to the National Hazardous Waste List, waste mineral oil is classified as hazardous waste and is numbered HW08.

The comprehensive utilization of waste mineral oil is of great significance to alleviate the shortage of resources and the shortage of oil products in our country, improve the utilization rate of existing resources and protect the ecological environment.

Next, let's reveal the "rebirth" experience of waste mineral oil

How to recycle waste mineral oil?

(1) Transshipment into the factory

After the waste mineral oil is transferred into the factory, the meter verifies the material information according to the on-board transfer list, records the source of the material, packaging method, material weight, vehicle information, etc., and prints it into documents. The hazardous waste information is uploaded to the intelligent environmental protection operation management platform to achieve all-round and dead-end supervision.

(2) Initial oil products

In order to preliminarily determine the proportion of waste mineral oil and water residue and ensure that the oil is in accordance with the contract, the technical specialist makes a preliminary judgment of the oil in the main way of "seeing" and "smelling".

see

By looking at the color of the waste mineral oil.

Black: The main products are heavy oil, coal tar, burning oil, used diesel oil and so on.

Dark red or dark red: generally used hydraulic oil, Gear Oil, turbine oil, etc.

Slight yellow: kerosene, transformer oil, volatile oil, etc.

smell

Each waste oil has some specific odor, such as the used waste liquid pressure oil has a rust taste, gear oil has a sulfur taste, and freezing oil has an amine taste.

(3) warehousing inspection

Before the waste mineral oil is stored, in order to ensure that it meets the basic requirements and standards for storage, the quality inspector shall analyze and inspect it, and the inspection items generally include density, viscosity, moisture, flash point, chroma, acid value, etc. When the product is found to be inconsistent with the disposal standard requirements during the inspection process, the price will be re-negotiated or returned in accordance with the relevant provisions.

(4) Production and treatment

The waste mineral oil is first removed by the filter, the coarse mechanical impurities are removed, and then most of the moisture and fine mechanical impurities are removed by the centrifuge, so that the moisture content in the raw oil is reduced to less than 2%, and then it is raised to a certain temperature (about 105 degrees Celsius) by the preheater, and then it is entered into the drying and deodorizing tower. In the vacuum state in the tower (pressure of about 6000 pa) filling, further remove the water in the raw material and odor of low-boiling substances, which water and low-boiling substances through the distilled air away. The final remaining component is distilled short range to separate the Base Oil from the heavy impurity component.

After the above pretreatment, the waste mineral oil is processed by thin film distillation and two-stage short-range distillation system to form recycled base oil, light fuel oil and heavy fuel oil, realizing the transformation of harm into benefit and waste into treasure.

Author:

Mr. James

E-mail:

sales@cn-lubricantadditive.com

Phone/WhatsApp:

+86 13783582233