Sulfur removal of gas oil using ultrasound-assisted catalytic oxidative process and study of its optimum conditions
Ultrasound-assisted oxidative desulfurization process (UAOD) was applied to reduce sulfur compounds of gas oil containing various types of sulfur content. The environmental regulation requires a very deep desulfurization to eliminate the sulfur compounds. UAOD is a promising technology with lower op...
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| Published in: | The Korean journal of chemical engineering Vol. 30; no. 9; pp. 1751 - 1759 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Boston
Springer US
01-09-2013
한국화학공학회 |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Ultrasound-assisted oxidative desulfurization process (UAOD) was applied to reduce sulfur compounds of gas oil containing various types of sulfur content. The environmental regulation requires a very deep desulfurization to eliminate the sulfur compounds. UAOD is a promising technology with lower operating cost and higher safety and environmental protection. For the first time the typical phase transfer agent (tetraoctyl-ammonium-bromide) was replaced with isobutanol because using isobutanol is much more economical than TOAB, imposing no contamination. The reaction was carried out at optimal point with various temperatures, in single-, two- and three step-procedures, investigating the effect of gradual increase of H
2
O
2
and TOAB being used instead of isobutanol. Total sulfur concentration in oil phase was analyzed by ASTM-D3120 method. The highest removal of about 90% for gas oil containing 9,500 mg/kg of sulfur was achieved in three-steps during 17 minutes of process at 62±2 °C when 180.3 mmol of H
2
O
2
was used and extraction carried out by methanol. |
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| Bibliography: | G704-000406.2013.30.9.011 |
| ISSN: | 0256-1115 1975-7220 |
| DOI: | 10.1007/s11814-013-0097-5 |