TY  - CONF
AU  - Ilić, Vesna
AU  - Šaponjic, Zoran
AU  - Mihailović, Darka
AU  - Molina, Ricardo
AU  - Jovančić, Petar
AU  - Nedeljković
AU  - Bokorov, Miloš
AU  - Radetić, Maja
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6521
PB  - Srpsko hemijsko društvo
C3  - 47. Savetovanje Srpskog Hemijskog Društva, Beograd, 21. 03. 2009.
T1  - Ispitivanje morfologije i hemijske strukture PA i PES vlakana modifikovanih korona pražnjenjem na atmosferskom pritisku
EP  - 229
SP  - 226
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6521
ER  - 

@conference{
author = "Ilić, Vesna and Šaponjic, Zoran and Mihailović, Darka and Molina, Ricardo and Jovančić, Petar and Nedeljković and Bokorov, Miloš and Radetić, Maja",
year = "2009",
publisher = "Srpsko hemijsko društvo",
journal = "47. Savetovanje Srpskog Hemijskog Društva, Beograd, 21. 03. 2009.",
title = "Ispitivanje morfologije i hemijske strukture PA i PES vlakana modifikovanih korona pražnjenjem na atmosferskom pritisku",
pages = "229-226",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6521"
}

Ilić, V., Šaponjic, Z., Mihailović, D., Molina, R., Jovančić, P., Nedeljković, Bokorov, M.,& Radetić, M.. (2009). Ispitivanje morfologije i hemijske strukture PA i PES vlakana modifikovanih korona pražnjenjem na atmosferskom pritisku. in 47. Savetovanje Srpskog Hemijskog Društva, Beograd, 21. 03. 2009.
Srpsko hemijsko društvo., 226-229.
https://hdl.handle.net/21.15107/rcub_technorep_6521

Ilić V, Šaponjic Z, Mihailović D, Molina R, Jovančić P, Nedeljković, Bokorov M, Radetić M. Ispitivanje morfologije i hemijske strukture PA i PES vlakana modifikovanih korona pražnjenjem na atmosferskom pritisku. in 47. Savetovanje Srpskog Hemijskog Društva, Beograd, 21. 03. 2009.. 2009;:226-229.
https://hdl.handle.net/21.15107/rcub_technorep_6521 .

Ilić, Vesna, Šaponjic, Zoran, Mihailović, Darka, Molina, Ricardo, Jovančić, Petar, Nedeljković, Bokorov, Miloš, Radetić, Maja, "Ispitivanje morfologije i hemijske strukture PA i PES vlakana modifikovanih korona pražnjenjem na atmosferskom pritisku" in 47. Savetovanje Srpskog Hemijskog Društva, Beograd, 21. 03. 2009. (2009):226-229,
https://hdl.handle.net/21.15107/rcub_technorep_6521 .

TY  - JOUR
AU  - Lukić, Jelena
AU  - Radin, Vesna
AU  - Bokorov, Miloš
AU  - Orlović, Aleksandar
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1205
AB  - In recent years copper sulphide formation in transformer windings has been recognized as one significant risk factor for operation of power transformers, due to number of failures which have occurred as a consequence of copper sulphide formation. Since sulphur compounds present in the insulating oil are recognized as the cause for copper sulphide formation, and in order to lower the risk of transformers failures, one of the possible solutions is removal corrosive sulphur from the oil, i.e. corrosive oils refining. In this paper the results obtained using selective liquid-liquid extraction process to remove the potentially corrosive and corrosive sulfur compounds from the oil are presented. Liquid -liquid extraction processes were widely used in petroleum industry in virgin base oil refining and waste oil re-refining to decrease aromatic content of the vacuum gas oil fractions and/or to remove other impurities from selected refinery streams. Selective liquid-liquid extraction (SLLE) process was developed and optimized for corrosive sulfur compounds extraction in insulating oils. Besides extraction of potentially corrosive sulfur species this process is highly efficient in used and waste oil re-refining. Amounts of co-solvent used in SLLE were finely tuned to increase selectivity for extraction of sulfur compounds in balance with application oil properties (electrical properties and oxidation stability). Solvent mass ratios were balanced according to polarity figures and surface tension properties. Other important process parameters: operating temperatures, number of cycles, solvents dosages were all optimized to achieve highest performance characteristics. Optimization of the process parameters in terms of extraction yield was performed in order to balance the oxidation stability of re-refined oils.
PB  - 42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008
T2  - 42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008
T1  - Refining of corrosive insulating oils by selective liquid-liquid extraction process
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1205
ER  - 

@article{
author = "Lukić, Jelena and Radin, Vesna and Bokorov, Miloš and Orlović, Aleksandar",
year = "2008",
abstract = "In recent years copper sulphide formation in transformer windings has been recognized as one significant risk factor for operation of power transformers, due to number of failures which have occurred as a consequence of copper sulphide formation. Since sulphur compounds present in the insulating oil are recognized as the cause for copper sulphide formation, and in order to lower the risk of transformers failures, one of the possible solutions is removal corrosive sulphur from the oil, i.e. corrosive oils refining. In this paper the results obtained using selective liquid-liquid extraction process to remove the potentially corrosive and corrosive sulfur compounds from the oil are presented. Liquid -liquid extraction processes were widely used in petroleum industry in virgin base oil refining and waste oil re-refining to decrease aromatic content of the vacuum gas oil fractions and/or to remove other impurities from selected refinery streams. Selective liquid-liquid extraction (SLLE) process was developed and optimized for corrosive sulfur compounds extraction in insulating oils. Besides extraction of potentially corrosive sulfur species this process is highly efficient in used and waste oil re-refining. Amounts of co-solvent used in SLLE were finely tuned to increase selectivity for extraction of sulfur compounds in balance with application oil properties (electrical properties and oxidation stability). Solvent mass ratios were balanced according to polarity figures and surface tension properties. Other important process parameters: operating temperatures, number of cycles, solvents dosages were all optimized to achieve highest performance characteristics. Optimization of the process parameters in terms of extraction yield was performed in order to balance the oxidation stability of re-refined oils.",
publisher = "42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008",
journal = "42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008",
title = "Refining of corrosive insulating oils by selective liquid-liquid extraction process",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1205"
}

Lukić, J., Radin, V., Bokorov, M.,& Orlović, A.. (2008). Refining of corrosive insulating oils by selective liquid-liquid extraction process. in 42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008
42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008..
https://hdl.handle.net/21.15107/rcub_technorep_1205

Lukić J, Radin V, Bokorov M, Orlović A. Refining of corrosive insulating oils by selective liquid-liquid extraction process. in 42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008. 2008;.
https://hdl.handle.net/21.15107/rcub_technorep_1205 .

Lukić, Jelena, Radin, Vesna, Bokorov, Miloš, Orlović, Aleksandar, "Refining of corrosive insulating oils by selective liquid-liquid extraction process" in 42nd International Conference on Large High Voltage Electric Systems 2008, CIGRE 2008 (2008),
https://hdl.handle.net/21.15107/rcub_technorep_1205 .