Effects of Tar Hydrocracking on Subsequent Carbonization Full article
| Journal |
Petroleum Chemistry
ISSN: 0965-5441 , E-ISSN: 1531-8532 |
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| Output data | Year: 2022, Volume: 62, Number: 10, Pages: 1204–1210 Pages count : 7 DOI: 10.1134/s0965544122100061 | ||
| Tags | oil tar, hydrocracking, carbonization, carbon nanofibers, nickel catalysts | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 17-73-30032 |
Abstract:
The study investigated thermal carbonization of oil tar in comparison with tar carbonization over a Ni/Sibunit catalyst at 450–600°C. The addition of Ni/Sibunit to the tar slightly enhanced the yield of coke. However, various sulfur compounds released during tar carbonization interact with metallic nickel to form nickel sulfide, thus rapidly deactivating the catalyst in carbonization that occurs by the carbide-cycle mechanism. To suppress the deactivation of 8%Ni/Sibunit under the impact of sulfur compounds, we hydrocracked the tar sample prior to feeding it to the carbonization. The tar hydrocracking was carried out in a flow-type reactor with a fixed bed of sulfided Ni–Mo/Al2O3 catalyst in a hydrogen atmosphere (the other reaction conditions included 16.0 MPa, 420°C, LHSV 0.5 h–1, and a hydrogen/feed ratio of 2000 v/v). The hydrocracking appreciably reduced the content of sulfur and nitrogen in the liquid product. In the presence of 8%Ni/Sibunit, the carbonization of the liquid tar hydrocracking product enhanced the yield of coke compared to that in the thermal carbonization. The catalytic carbonization was found to change the carbon morphology. Specifically, in the 8%Ni/Sibunit addition case, carbon nanofibers 15–40 nm in diameter were detected. In addition to the carbon nanofibers, the formation of amorphous carbon sheets was observed.
Cite:
Chesnokov V.V.
, Dik P.P.
, Chichkan A.S.
, Parmon V.N.
Effects of Tar Hydrocracking on Subsequent Carbonization
Petroleum Chemistry. 2022. V.62. N10. P.1204–1210. DOI: 10.1134/s0965544122100061 WOS Scopus РИНЦ AN OpenAlex
Effects of Tar Hydrocracking on Subsequent Carbonization
Petroleum Chemistry. 2022. V.62. N10. P.1204–1210. DOI: 10.1134/s0965544122100061 WOS Scopus РИНЦ AN OpenAlex
Original:
Чесноков В.В.
, Дик П.П.
, Чичкань А.С.
, Пармон В.Н.
Влияние гидрокрекинга гудрона на последующий процесс его коксования
Нефтехимия. 2022. Т.62. №6. С.942-949. DOI: 10.31857/S0028242122060168 РИНЦ OpenAlex
Влияние гидрокрекинга гудрона на последующий процесс его коксования
Нефтехимия. 2022. Т.62. №6. С.942-949. DOI: 10.31857/S0028242122060168 РИНЦ OpenAlex
Dates:
| Submitted: | Apr 1, 2022 |
| Published print: | Oct 1, 2022 |
| Accepted: | Nov 11, 2022 |
| Published online: | Dec 9, 2022 |
Identifiers:
| Web of science: | WOS:000896508600001 |
| Scopus: | 2-s2.0-85143596881 |
| Elibrary: | 50328642 |
| Chemical Abstracts: | 2022:3086623 |
| OpenAlex: | W4311981808 |
Citing:
| DB | Citing |
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| Elibrary | 1 |