Effect of Temperature on the Hydrotreatment of Sewage Sludge-Derived Pyrolysis Oil and Behavior of Ni-Based Catalyst
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Catalysts
ISSN: 2073-4344
|
| Output data |
Year: 2020,
Volume: 10,
Number: 11,
Article number
: 1273,
Pages count
: 27
DOI:
10.3390/catal10111273
|
| Tags |
Hydrotreatment; Nickel-phosphide catalyst; Pyrolysis oil; Sewage sludge |
| Authors |
Alekseeva (Bykova) Maria V.
1,2
,
Bulavchenko Olga A.
1,2
,
Saraev Andrey A.
1,2
,
Kremneva Anna M.
1
,
Shashkov Mikhail V.
1,2
,
Zaikina Olesya O.
1
,
Gulyaeva Yuliya K.
1
,
Grachev Andrey N.
3
,
Kikhtyanin Oleg
4
,
Kubička David
4
,
Yakovlev Vadim A.
1,2
|
| Affiliations |
| 1 |
Federal Research Center Boreskov Institute of Catalysis SB RAS, Pr. Akad. Lavrentieva, 5, 630090 Novosibirsk, Russia
|
| 2 |
Department of Natural Sciences, Novosibirsk State University, Pirogova Str., 2, 630090 Novosibirsk, Russia
|
| 3 |
Department of Chemical Technology of Wood, Kazan National Research Technological University, K. Marksa Str., 68, 420015 Kazan, Russia
|
| 4 |
Department of Petroleum Technology and Alternative Fuels, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
|
|
Funding (1)
|
1
|
Russian Foundation for Basic Research
Czech Science Foundation
|
19-53-26005 / 20-28086J
|
The high-energy potential of wastewater sewage sludge (SS) produced in large amounts around the world makes it an attractive feedstock for fuels and energy sectors. Thermochemical valorization relying on pyrolysis of SS followed by hydrotreatment of pyrolysis oil (Py-SS) might even allow the integration of SS into existing oil refineries. In the present study, catalytic hydrotreatment of Py-SS was performed over a NiCuMo-P-SiO2 catalyst in a batch reactor at temperatures in the range of 200–390◦C. Due to sulfur presence in the feed, the increasing reaction temperature induced in situ transformation of metallic Ni into Ni3S2 in the catalyst. In contrast, the Ni3P active phase possessed remarkable stability even at the harshest reaction conditions. The oxygen content in the reaction products was decreased by 59%, while up to 52% of N and 89% of S were removed at 390◦C. The content of free fatty acids was greatly reduced by their conversion to n-alkanes, while the larger amount of volatile aromatics was generated from high molecular mass compounds. The quality of oil-derived products greatly changed at elevated temperatures, providing strong evidence of effective upgrading via decarboxy(ny)lation, hydrogenation, and hydrocracking transformations. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.