REFINING USED ENGINE MOBIL OIL PRESENTED BY KHALIL HAIDER
TABLE OF CONTENT Introduction of used engine mobile oil Safety health and environment Source of collection Storage tank Distillation process Acid treatment Bleaching process Filter press Quality
INTRODUCTION OF MOBIL OIL Used engine oil, often referred to simply as used motor oil, is a byproduct of the engine lubrication process in vehicles and machinery. This oil becomes “used” or “black” when it has served its purpose of lubricating engine components, during which it collects dirt, metal particles, water, fuel residues, and other contaminants. Proper management and recycling of used black engine oil are critical due to its potential environmental hazards and its ability to be re-refined for further use.
USED ENGINE MOBIL OIL
SAFETY HEALTH AND ENVIRONMENT Important safety rules in the workplace Follow the dress code. Safety helmet Eye protection Protective gloves Protective footwear Safety shoes
Types of PPE’s
SOURCE OF COLLECTION Automotive service centers Industrial machinery and equipment Agriculture sector
STORAGE TANK Capacity: 15 ton Storage tank: The used oil is stored in approved containers, typically made of metal or high-density plastic, that are leak-proof and resistant to chemical reactions. These containers are often labeled to indicate they contain hazardous materials.
STORAGE TANK
DISTILLATION PROCESS Temperature: 320 o C –360 o C Distillation process: Distillation columns are used to separate oil into its various components based on their boiling points. The pre-treated oil is heated in a distillation unit. The heat causes the oil to vaporize, separating it into different fractions based on their boiling points. Work on distillation columns involves heating the oil to separate it into fractions such as gasoline, diesel, and heavy fuel oil. Heat the dehydrated oil to around 320-360°C in a distillation column. Separate the oil into different fractions based on boiling points. The main fractions include : Kerosene Diesel petrol
Distillation
ACID TREATMENT Neutralizer Temperature: 70°C to 90°C Purpose: After acid treatment, the oil is neutralized using an alkaline substance (like lime or sodium hydroxide) to neutralize any remaining acid and to help remove acidic compounds and unwanted by-products
Neutralizer
Bleaching process Temperature: 225 °C Bleaching Process: Treat the oil with bleaching agents such as activated clay or activated carbon to remove any remaining impurities, color, and odors. This step helps to improve the quality and appearance of the refined oil.
FILTER PRESS Working Process: Slurry Feeding: The slurry is fed into the filter press . Filtration : The liquid passes through filter cloths, while solid particles are retained to form a cake . Cake Formation: Over time, a thick layer of solid (filter cake) builds up on the cloth, while the liquid (filtrate) is collected. Discharge: Once filtration is complete, the solid cake is removed, and the process can be repeated.
QUALITY Test the refined oil for key parameters such as viscosity, flash point, total acid number (TAN), total base number (TBN), and contaminant levels. Ensure the refined oil meets the required standards and specifications.