Refining Used Lubricating Oils

Re-refining Used Lubricating Oils
Free download. Book file PDF easily for everyone and every device. You can download and read online Refining Used Lubricating Oils file PDF Book only if you are registered here. And also you can download or read online all Book PDF file that related with Refining Used Lubricating Oils book. Happy reading Refining Used Lubricating Oils Bookeveryone. Download file Free Book PDF Refining Used Lubricating Oils at Complete PDF Library. This Book have some digital formats such us :paperbook, ebook, kindle, epub, fb2 and another formats. Here is The CompletePDF Book Library. It's free to register here to get Book file PDF Refining Used Lubricating Oils Pocket Guide.

Barman, , Jane V.

Recommended For You

Thomas, , Anil K. Mehrotra, , R.

SENER used oil re-refining process

Paul Philp. Petroleum and Coal.

Log in to Wiley Online Library

Analytical Chemistry , 69 12 , Journal of Cleaner Production , , Dan Moldovanu, Florin Mariasiu. Kannan, C. Analyzing the characteristics of fuel extracted by catalytic conversion of waste engine oil. Barbara J. Oil Recycling. Vertical profile, source apportionment, and toxicity of PAHs in sediment cores of a wharf near the coal-based steel refining industrial zone in Kaohsiung, Taiwan. Environmental Science and Pollution Research , 23 5 , Anthony Kasozi.

Catalytic microwave pyrolysis of waste engine oil using metallic pyrolysis char. Applied Catalysis B: Environmental , , Aburas, A.

Refining Used Lubricating Oils

Bafail, A. Petroleum Science and Technology , 33 2 , Production of hydrogen and light hydrocarbons as a potential gaseous fuel from microwave-heated pyrolysis of waste automotive engine oil. International Journal of Hydrogen Energy , 37 6 , Microwave-heated pyrolysis of waste automotive engine oil: Influence of operation parameters on the yield, composition, and fuel properties of pyrolysis oil. Fuel , 92 1 , Characteristics of gas and residues produced from electric arc pyrolysis of waste lubricating oil.

Waste Management , 30 7 , Dennis Brinkman, Barbara Parry. Used Oil Recycling and Environmental Considerations.

Mustafa Balat. Journal of the Chinese Chemical Society , 53 2 , Teresa Rauckyte, Douglas J.

Footer Menu - Mobile

Hargreaves, Zenon Pawlak. Determination of heavy metals and volatile aromatic compounds in used engine oils and sludges. Fuel , 85 4 , Dennis W.

  • Love and Forgiveness for a More Just World (Religion, Culture, and Public Life).
  • Footer Menu - Mobile.
  • Britain and the Ruhr Crisis;
  • Biomolecular Structure and Function.
  • Oil Re-Refining | Used Oil Recycling | Safety-Kleen.

Brinkman, Barbara J. Recycling, Oil. Behaviour of different industrial waste oils in a pyrolysis process: metals distribution and valuable products. The unit was first flushed with nitrogen to remove air, and then kept for 4 hours under a hydrogen gas pressure of 5 bars to check any leakage. The liquid feed and the hydrogen gas streams were injected under pressure at the top of the reactor, both cross the different zones of the reactor in down-flow direction.

Determination of the optimum pressure for high oil recovery The experiment was carried out by the evaporator apparatus. After each experiment, the apparatus were washed with n-hexane solvent in order to remove any contaminants that accumulated in the column, condenser and vacuum lines. The n-hexane washed the contaminants and accumulated them at the bottom of the still pot where they can be removed.

After washing, all connections and joints were re-lubricated, and prepared for the next experiment. The evaporator operation variable that was studied was: Vacuum pressure: 4 and 8mbars.

  1. Phonics Exposed: Understanding and Resisting Systematic Direct Intense Phonics Instruction?
  2. Main navigation;
  3. Understanding Mental Retardation (Understanding Health and Sickness Series).
  4. Description.
  5. Refining Used Lubricating Oils | Taylor & Francis Group?
  6. Exponential Functionals of Brownian Motion and Related Processes (Springer Finance / Springer Finance Lecture Notes).

The first experiment at 4 mbar was considered the best dehydration condition. The presence of excessive water contamination will affect the viscosity of the oil and this may give rise to emulsion formation and can also lead to gear tooth and bearing problems.

Footer Menu - Mobile

The oil recovery and ash reduction for the same ratio are better than that obtained for solvent to oil ratio of and Solvent to oil ratio vs. There was increasing of sulphur removal at high reaction temperature as shown in Fig. Pour point - This decrease in pour point is because of degradations of additives, which were present in fresh oil as pour point depressants. These results show that the refining method is comparatively better than other methods used in the past.

Specific gravity - The value of specific gravity of used engine oil is slightly above that of fresh oil. It could be lower or higher than fresh engine oil depending on the nature and type of contaminations. Viscosity - The decrease in viscosity of used oil value is attributed to the removal of aromatic contents that are normally responsible for the high viscosity value. The result of the viscosity test shows that, the used lube oil has lost most of its viscosity due to contamination. However, refining has restored most of its viscosity. This can be attributed to possible conversion of contaminants by hydrogenation and their removal.

This means that solvent to oil ratio has an impact on the oil recovered and has to be optimised in order to recover the highest amount of oil possible.

Re-refining Used Lubricating Oils — American Carbon Registry

Table 5: SPSS analysis on the effect of residence time on sulphur removal Beta value for temperature is 0. This means that both variables have an impact on the sulphur removal with residence time having a negative one implying that the smaller the residence time the higher the sulphur content removed. On the basis of experimental work, it was found that this method effectively removed contaminants from used lubricating base oil and returned the oil to a quality essentially equivalent to oils produced by fresh lube oil stocks.

The results have clearly showed that during purification of fuel oil, the sulphur content as major impurity is significantly reduced. Also, there is improvement in viscosity, specific gravity, pour and flash points. This has shown that aromatics, carbon residues, and ash of the oil have been reduced. Therefore, it is possible to refine used lubricating oil. Equipment Design Agitated thin film evaporator spreads a thin layer or film of liquid on one side of a metallic wall, with heat supplied to the other side.

It has a vertical cylinder where the feed material is distributed to the inner surface. As the liquid flows downward, axially arranged blades distribute the liquid as a thin film, which is constantly mixed. Because of low pressure drop during gas flow inside the evaporator the boiling temperature of liquid, which is evaporated, depends only on its composition and does not depend on liquid position in the evaporator. Fig 3: Agitated thin film evaporator 2D drawings Chemical engineering design for the agitated thin film evaporator Table 6 below shows the chemical engineering design parameters for the ATFE.

Table 7: Agitator design summary Agitator Number required 1 No. A Proportional Integral PI controller was used. Thermocouples were used as sensing elements and were implemented in the control architecture. At this temperature only base oil is in gas form. The flow rate of steam is manipulated to control the temperature of the process fluid.

A combination of feedback and feed-forward control schemes was used to ensure good results. Feed forward scheme was achieved by measuring the inlet temperature of oil and sending the information to the PI controller. The transmitter converts the reading from the thermocouple to a standard signal and transmits it to the PI controller. PI control uses an algorithm that is proportional to the difference between a set point SP and a process variable PV which in this case is temperature, and integral time-function algorithms, which provide a continuous-control process output to meet the desired set point.

The PI controllers sends a correcting signal to a converter which converts the correction signal to pneumatic signal and send it to an actuator. If the temperature is too hot, the control valve was adjusted to decrease steam flow rate. If the temperature is too low the valve is adjusted to increase steam flow rate, thus increasing the amount of heat exchanged and temperature of the process fluid increases.

Rerefining of used oils — a review of commercial processes

They are less expensive than most comparable types. New Password. Presently, there are three lubricant refineries in the country with a total installed capacity of , tonnes. Go to top. Please review our Terms and Conditions of Use and check box below to share full-text version of article. The authors describe the basic steps of used oil treatment including dehydration, distillation or solvent extraction, and finishing. Pair your accounts.

Pressure is controlled as it affects relative volatility, temperature difference as well as process safety. A vacuum pump is installed to maintain the vacuum system needed. If there is an excessive increase in pressure the bypass valve opens and releases pressure. The control loop is given in the Fig 4 below.

Navigation menu

Summary. Used lubricating oil is a valuable resource. However, it must be re- refined mainly due to the accumulation of physical and chemical contaminants in . The manufacture of lubricating oil is the most energy-intensive process in a crude oil refinery, and used lubricating oils are often burned in industrial or.

These parameters if slightly adjusted using additives results in refined lubricating oil grade Refining of used lubricating oils promotes sustainable development since it deals with chemical waste management and disposal. Adams, M. Prediction of oil yield from oil shale minerals using diffuse reflectance infrared Fourier transform spectroscopy, Fuel 84 14—15 , p, — Andre, H. The Canadian J.

Coulson, J. Guthrie, U. Petroleum Products Handbook. Haj Assad, M. Mathematical modelling of falling liquid film evaporation process, International journal of refrigeration, Vol. Perry, R.