Supercritical Water desulfurization of crude oil
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2014.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2014
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| Online Access: | http://hdl.handle.net/1721.1/88904 |
| _version_ | 1826201898733010944 |
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| author | Kida, Yuko |
| author2 | William H. Green. |
| author_facet | William H. Green. Kida, Yuko |
| author_sort | Kida, Yuko |
| collection | MIT |
| description | Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2014. |
| first_indexed | 2024-09-23T11:58:37Z |
| format | Thesis |
| id | mit-1721.1/88904 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T11:58:37Z |
| publishDate | 2014 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/889042019-04-10T14:35:22Z Supercritical Water desulfurization of crude oil SCW desulfurization of crude oil Kida, Yuko William H. Green. Massachusetts Institute of Technology. Department of Chemical Engineering. Massachusetts Institute of Technology. Department of Chemical Engineering. Chemical Engineering. Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 2014. Cataloged from PDF version of thesis. Includes bibliographical references. Supercritical Water (SCW) desulfurization was investigated for both model sulfur compounds and Arab Heavy crude. In part 1, the reactions of alkyl sulfides in SCW were studied. During hexyl sulfide decomposition in SCW, pentane and CO+CO₂ were detected in addition to the expected six-carbon products. A multi-step reaction sequence for hexyl sulfide reacting with SCW is proposed which explains the surprising products. Intermediate studies were performed to confirm that the key intermediate hexanal forms and rapidly decomposes to pentane and CO. In part 2, Arab Heavy crude was treated with SCW and analyzed with comprehensive gas chromatography (GCxGC) coupled with two detectors, sulfur chemiluminescence detector (SCD) and a flame ionization detector (FID). SCD is a sulfur specific detector that allowed detailed analysis of the reactions that occur during SCW treatment of real fuel mixtures. It was shown that SCW treatment had two effects on sulfur compounds: cracking of heavy sulfur compounds into smaller compounds, mainly benzothiophenes (BT) and dibenziophenes (DBT), and cracking of long alkyl chains on these BTs and DBTs causing a shift to lower molecular weight BTs and DBTs. SCW was found to be ineffective in breaking the stable aromatic rings of these thiophenic compounds. Work in this thesis shed light into molecular level reactions during SCW treatment rather than changes in bulk properties which are often reported in work in the field of SCW desulfurization. by Yuko Kida. Ph. D. 2014-08-19T17:36:39Z 2014-08-19T17:36:39Z 2014 2014 Thesis http://hdl.handle.net/1721.1/88904 883661237 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 105 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Chemical Engineering. Kida, Yuko Supercritical Water desulfurization of crude oil |
| title | Supercritical Water desulfurization of crude oil |
| title_full | Supercritical Water desulfurization of crude oil |
| title_fullStr | Supercritical Water desulfurization of crude oil |
| title_full_unstemmed | Supercritical Water desulfurization of crude oil |
| title_short | Supercritical Water desulfurization of crude oil |
| title_sort | supercritical water desulfurization of crude oil |
| topic | Chemical Engineering. |
| url | http://hdl.handle.net/1721.1/88904 |
| work_keys_str_mv | AT kidayuko supercriticalwaterdesulfurizationofcrudeoil AT kidayuko scwdesulfurizationofcrudeoil |