Removal of Sulfur Compounds from Mineral Insulating Oils by Extractive Refining with N-Methyl-2-pyrrolidone
Само за регистроване кориснике
2012
Аутори
Lukić, Jelena M.Nikolić, Draginja
Mandić, Valentina
Glišić, Sandra
Antonović, Dušan
Orlović, Aleksandar
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Copper sulfide deposits in the insulation systems of power transformers decrease the dielectric properties of the insulation and therefore constitute a significant risk for the operation of power transformers. Disulfides, oxidized sulfur compounds, thiols, and elemental sulfur, which could be present in insulating oil, have been recognized as the sources of reactive sulfur responsible for copper sulfide formation. Selective liquid liquid extraction using N-methyl-2-pyrrolidone solvent was investigated for the purification of mineral insulating oils through the removal of compounds and precursors responsible for copper sulfide formation. The efficiency of the extraction process was evaluated using corrosive sulfur test IEC 62535, SEM/EDX measurements of paper before and after the IEC 62535 test, and measurements of the dibenzyl disulfide concentration in the oil using GC-ECD method. The oxidation stability of refined oils was evaluated using the IEC 61125 method. Precursors of copper su...lfide deposits were completely removed from different mineral oils as a result of purification by extraction with N-methyl-2-pyrrolidone and 1.0 wt % water as a cosolvent.
Извор:
Industrial & Engineering Chemistry Research, 2012, 51, 12, 4472-4477Издавач:
- Amer Chemical Soc, Washington
Финансирање / пројекти:
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
DOI: 10.1021/ie300450e
ISSN: 0888-5885
WoS: 000301968300002
Scopus: 2-s2.0-84859151769
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Lukić, Jelena M. AU - Nikolić, Draginja AU - Mandić, Valentina AU - Glišić, Sandra AU - Antonović, Dušan AU - Orlović, Aleksandar PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2205 AB - Copper sulfide deposits in the insulation systems of power transformers decrease the dielectric properties of the insulation and therefore constitute a significant risk for the operation of power transformers. Disulfides, oxidized sulfur compounds, thiols, and elemental sulfur, which could be present in insulating oil, have been recognized as the sources of reactive sulfur responsible for copper sulfide formation. Selective liquid liquid extraction using N-methyl-2-pyrrolidone solvent was investigated for the purification of mineral insulating oils through the removal of compounds and precursors responsible for copper sulfide formation. The efficiency of the extraction process was evaluated using corrosive sulfur test IEC 62535, SEM/EDX measurements of paper before and after the IEC 62535 test, and measurements of the dibenzyl disulfide concentration in the oil using GC-ECD method. The oxidation stability of refined oils was evaluated using the IEC 61125 method. Precursors of copper sulfide deposits were completely removed from different mineral oils as a result of purification by extraction with N-methyl-2-pyrrolidone and 1.0 wt % water as a cosolvent. PB - Amer Chemical Soc, Washington T2 - Industrial & Engineering Chemistry Research T1 - Removal of Sulfur Compounds from Mineral Insulating Oils by Extractive Refining with N-Methyl-2-pyrrolidone EP - 4477 IS - 12 SP - 4472 VL - 51 DO - 10.1021/ie300450e ER -
@article{ author = "Lukić, Jelena M. and Nikolić, Draginja and Mandić, Valentina and Glišić, Sandra and Antonović, Dušan and Orlović, Aleksandar", year = "2012", abstract = "Copper sulfide deposits in the insulation systems of power transformers decrease the dielectric properties of the insulation and therefore constitute a significant risk for the operation of power transformers. Disulfides, oxidized sulfur compounds, thiols, and elemental sulfur, which could be present in insulating oil, have been recognized as the sources of reactive sulfur responsible for copper sulfide formation. Selective liquid liquid extraction using N-methyl-2-pyrrolidone solvent was investigated for the purification of mineral insulating oils through the removal of compounds and precursors responsible for copper sulfide formation. The efficiency of the extraction process was evaluated using corrosive sulfur test IEC 62535, SEM/EDX measurements of paper before and after the IEC 62535 test, and measurements of the dibenzyl disulfide concentration in the oil using GC-ECD method. The oxidation stability of refined oils was evaluated using the IEC 61125 method. Precursors of copper sulfide deposits were completely removed from different mineral oils as a result of purification by extraction with N-methyl-2-pyrrolidone and 1.0 wt % water as a cosolvent.", publisher = "Amer Chemical Soc, Washington", journal = "Industrial & Engineering Chemistry Research", title = "Removal of Sulfur Compounds from Mineral Insulating Oils by Extractive Refining with N-Methyl-2-pyrrolidone", pages = "4477-4472", number = "12", volume = "51", doi = "10.1021/ie300450e" }
Lukić, J. M., Nikolić, D., Mandić, V., Glišić, S., Antonović, D.,& Orlović, A.. (2012). Removal of Sulfur Compounds from Mineral Insulating Oils by Extractive Refining with N-Methyl-2-pyrrolidone. in Industrial & Engineering Chemistry Research Amer Chemical Soc, Washington., 51(12), 4472-4477. https://doi.org/10.1021/ie300450e
Lukić JM, Nikolić D, Mandić V, Glišić S, Antonović D, Orlović A. Removal of Sulfur Compounds from Mineral Insulating Oils by Extractive Refining with N-Methyl-2-pyrrolidone. in Industrial & Engineering Chemistry Research. 2012;51(12):4472-4477. doi:10.1021/ie300450e .
Lukić, Jelena M., Nikolić, Draginja, Mandić, Valentina, Glišić, Sandra, Antonović, Dušan, Orlović, Aleksandar, "Removal of Sulfur Compounds from Mineral Insulating Oils by Extractive Refining with N-Methyl-2-pyrrolidone" in Industrial & Engineering Chemistry Research, 51, no. 12 (2012):4472-4477, https://doi.org/10.1021/ie300450e . .