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Removal of Corrosive Sulfur from Insulating Oils by Natural Sorbent and Liquid-Liquid.

SYSNO ASEP	0477159
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Removal of Corrosive Sulfur from Insulating Oils by Natural Sorbent and Liquid-Liquid.
Author(s)	Matějková, Martina (UCHP-M)_{RID, ORCID, SAI} Kaštánek, František (UCHP-M)_{RID, SAI, ORCID} Maléterová, Ywetta (UCHP-M)_{RID, ORCID, SAI} Kužílek, V. (CZ) Košanová, L. (CZ) Šolcová, Olga (UCHP-M)_{RID, ORCID, SAI}
Source Title	IEEE Transactions on Dielectrics and Electrical Insulation - ISSN 1070-9878 Roč. 24, č. 4 (2017), s. 2383-2389
Number of pages	7 s.
Language	eng - English
Country	US - United States
Keywords	oil insulation ; sorption ; bentonite
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
OECD category	Chemical process engineering
R&D Projects	TA04020151 GA TA ČR - Technology Agency of the Czech Republic (TA ČR)
Institutional support	UCHP-M - RVO:67985858
UT WOS	000411003700051
EID SCOPUS	85029786423
DOI	10.1109/TDEI.2017.006660
Annotation	Prevention of energy transformer failures by removing so-called corrosive sulfur from insulation oil belongs to the most important tasks. This article is focused on finding an effective way suitable for decontamination of mineral insulation oils containing sulfur compounds together with regeneration of the insulation oils. Two methods were suggested and optimized, sorption technique on the newly suggested natural sorbents, bentonites, and liquid-liquid extraction with subsequent sorption. The effectiveness of proposed methods was compared with the common technique of filtration through a layer of commercially available Fuller’s earth. The real insulation oil from transformers with relatively high content of dibenzyl disulfide - 71.6 mg kg-1 was applied in all tests. Both suggested methods revealed a high efficiency of a corrosive sulfur removal and both bentonites possessed significantly better sorption properties than the commercial regenerated Fuller’s earth. Moreover, technological characteristics of regenerated oils by both methods met all requirements of the standards no. CSN EN 60422 and their properties corresponded to the new electro-insulation oils.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2018

Number of the records: 1