Removal of corrosive sulfur from insulating oil with adsorption method

Author

Wan, T. ; Feng, B. ; Zhou, Z. ; Qian, H. ; Gong, S.K.

Author_Institution

Hunan Electr. Power Corp. Res. Inst., Changsha, China

Volume

22

Issue

6

fYear

2015

fDate

12/1/2015 12:00:00 AM

Firstpage

3321

Lastpage

3326

Abstract

Corrosive sulfur has been found in numerous mineral insulating oils. Adsorption is a promising method to remove the corrosive sulfur in insulating oil. In this paper, three types of adsorbents, CeY, CuY, and AgY, were prepared with liquid-phase ion exchange. The adsorbents were characterized by X-ray fluorescence, X-ray photoelectron spectroscopy, BET analysis, thermo-gravimetric/differential scanning calorimetry and X-ray diffraction. The results showed that active ions, Ce, Cu, and Ag, had highly decentralized into the lattice location of zeolites and occupied the cationic position. The adsorbents achieved good adsorption effect toward dibenzyl disulfide and dodecyl mercaptan through π complexation of Cu, Ag, and Ce cations in zeolites with sulfide.

Keywords

X-ray diffraction; X-ray fluorescence analysis; adsorption; cerium compounds; copper compounds; corrosion; differential scanning calorimetry; insulating oils; silver compounds; sulphur; zeolites; AgY; BET analysis; CeY; CuY; X-ray diffraction; X-ray fluorescence; X-ray photoelectron spectroscopy; adsorption method; cationic position; cations; corrosive sulfur removal; dibenzyl disulfide; dodecyl mercaptan; lattice location; mineral insulating oils; thermo-gravimetric/differential scanning calorimetry; zeolites; Adsorption; Compounds; Copper; Corrosion; Minerals; Sulfur; X-ray diffraction; Corrosive sulfur; Dibenzyl disulfide (DBDS); adsorption; dimethyl sulfoxide; dodecyl mercaptan; mineral oil; silicone oil; transformers; zeolite;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2015.005309

Filename

7367527