scholarly journals Used Lubricating Oil Processing for Energy Recovery. I. Applied pyrolysis

2019 ◽  
Vol 70 (10) ◽  
pp. 3527-3531

Applied pyrolysis is used in this work as a treatment technique for hydrocarbon fraction recovery of used lubricating oils (ULO) with the aim of its further energetic valorisation. Applied pyrolysis bring also the advantage of a better management of metallic compounds that will be concentrated in the solid residue. In this work, technical parameters have been evaluated to establish their influence on the process evolution with the aim of identifying the adequate parameters for obtaining the maximum liquid fraction. It was found that, for an equilibrated energy balance, the final pyrolysis temperature should not exceed 460°C and the main parameter that affect the pyrolysis oil yield and its physical-chemical properties is the heating rate in the thermal range of decomposition. Activated Zeolites (HZSM-5 type) and Na2CO3 were used as catalysts. The catalysed pyrolysis tests were performed using direct contact between ULO and catalyst, the materials being mixed before processing. Experimental results showed that in non-catalysed pyrolysis an increasing heating rate is slightly reducing the yield of liquid fraction. On the other hand, by using catalysts, the liquid fraction is decreasing. Thus, the highest liquid ratio (81 wt.%) was obtained when the Na2CO3 is used and the process is run under a heating rate of 3-5°C/min. But then, the zeolite HZSM-5 is leading to the highest overall conversion, 95 wt.% at 15-17°C/min, and is positively influence the formation of gas fractions. Keywords: Used lubricating oil, pyrolysis, environment, energy

2019 ◽  
Vol 70 (10) ◽  
pp. 3527-3531
Author(s):  
Maria Paraschiv ◽  
Cristina Ciobanu ◽  
Radu Kuncser ◽  
Laurentiu Ilie ◽  
Malina Prisecaru ◽  
...  

Applied pyrolysis is used in this work as a treatment technique for hydrocarbon fraction recovery of used lubricating oils (ULO) with the aim of its further energetic valorisation. Applied pyrolysis bring also the advantage of a better management of metallic compounds that will be concentrated in the solid residue. In this work, technical parameters have been evaluated to establish their influence on the process evolution with the aim of identifying the adequate parameters for obtaining the maximum liquid fraction. It was found that, for an equilibrated energy balance, the final pyrolysis temperature should not exceed 460�C and the main parameter that affect the pyrolysis oil yield and its physical-chemical properties is the heating rate in the thermal range of decomposition. Activated Zeolites (HZSM-5 type) and Na2CO3 were used as catalysts. The catalysed pyrolysis tests were performed using direct contact between ULO and catalyst, the materials being mixed before processing. Experimental results showed that in non-catalysed pyrolysis an increasing heating rate is slightly reducing the yield of liquid fraction. On the other hand, by using catalysts, the liquid fraction is decreasing. Thus, the highest liquid ratio (81 wt.%) was obtained when the Na2CO3 is used and the process is run under a heating rate of 3-5�C/min. But then, the zeolite HZSM-5 is leading to the highest overall conversion, 95 wt.% at 15-17�C/min, and is positively influence the formation of gas fractions.


2019 ◽  
Vol 31 ◽  
pp. 339-346 ◽  
Author(s):  
Suppalerk Aramkitphotha ◽  
Harakhun Tanatavikorn ◽  
Chalermporn Yenyuak ◽  
Tharapong Vitidsant

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
O. P. Abioye ◽  
P. Agamuthu ◽  
A. R. Abdul Aziz

Soil and surface water contamination by used lubricating oil is a common occurrence in most developing countries. This has been shown to have harmful effects on the environment and human beings at large. Bioremediation can be an alternative green technology for remediation of such hydrocarbon-contaminated soil. Bioremediation of soil contaminated with 5% and 15% (w/w) used lubricating oil and amended with 10% brewery spent grain (BSG), banana skin (BS), and spent mushroom compost (SMC) was studied for a period of 84 days, under laboratory condition. At the end of 84 days, the highest percentage of oil biodegradation (92%) was recorded in soil contaminated with 5% used lubricating oil and amended with BSG, while only 55% of oil biodegradation was recorded in soil contaminated with 15% used lubricating oil and amended with BSG. Results of first-order kinetic model to determine the rate of biodegradation of used lubricating oil revealed that soil amended with BSG recorded the highest rate of oil biodegradation (0.4361 day−1) in 5% oil pollution, while BS amended soil recorded the highest rate of oil biodegradation (0.0556 day−1) in 15% oil pollution. The results of this study demonstrated the potential of BSG as a good substrate for enhanced remediation of hydrocarbon contaminated soil at low pollution concentration.


2020 ◽  
pp. 21-26
Author(s):  
E.H. Ahmadov ◽  

The paper studies the reduction rate of gas production in the wells of Bulla-deniz field drilled to VIII horizon. With this purpose, geological (reservoir properties, oil-gas saturation, net thickness, formation pressure and temperature, formation heterogeneity, multi-layer system, tectonic faults, physical-chemical properties of oil and gas etc.) and technological (well structure, measuring and transportation system, well operation regime, drilling technology etc.) conditions of formation were analyzed and the well model of VII and VIII horizons of Bulla-deniz field using these geological and technical parameters developed as well. For the estimation of impact of geological and technical aspects on production, sensitivity analysis was carried out on the models. The suggestions for elaboration of uncertainty of geological and technical parameters affecting production dynamics were developed. To reveal the reasons for production differences of the wells, it was proposed to install borehole manometers, to obtain the data on pressure recovery curves, drainage area, skin-effect impact, permeability and to develop a study plan of bottomhole zone with acid.


Fuel ◽  
2019 ◽  
Vol 239 ◽  
pp. 717-725 ◽  
Author(s):  
Yangchao Xia ◽  
Zili Yang ◽  
Rui Zhang ◽  
Yaowen Xing ◽  
Xiahui Gui

Author(s):  
Karen Hosomi Teramae ◽  
Mariana Lopes de Sousa ◽  
Dejanira de Fransceschi De Angelis ◽  
Ederio Dino Bidoia

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