Three-Step Macrokinetic Model of Butane and Propane Steam Conversion to Methane-Rich Gas
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
International Journal of Chemical Kinetics
ISSN: 0538-8066
, E-ISSN: 1097-4601
|
| Вых. Данные |
Год: 2019,
Том: 51,
Номер: 10,
Страницы: 731-735
Страниц
: 5
DOI:
10.1002/kin.21304
|
| Ключевые слова |
associated petroleum gas; butane; flare gas; kinetic study; mathematical simulation; methane production; nickel catalyst; propane; steam reforming |
| Авторы |
Uskov S.I.
1,2
,
Shigarov A.B.
1
,
Potemkin D.I.
1,2
,
Snytnikov P.V.
1,2
,
Kirillov V.A.
1,2
,
Sobyanin V.A.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
|
| 2 |
Novosibirsk State University, Novosibirsk, Russian Federation
|
|
Информация о финансировании (1)
|
1
|
Российский фонд фундаментальных исследований
|
18-29-24015 (АААА-А18-118111690010-7)
|
Low-temperature steam conversion (LTSC) of a methane-butane mixture (95% methane and 5% butane) into a methane-rich gas over an industrial Ni-based catalyst has been studied with the following reaction conditions: temperature 200–320°C, pressure 1 bar, gas hour space velocity 1200–3600 h–1, and steam to carbon ratio 0.64. A three-step macrokinetic model has been suggested based on the kinetic parameters found. The model includes the following reactions: (1) irreversible steam reforming; (2) CO2 methanation, which occurs in a quasi-equilibrium mode at temperatures above 260°C; (3) hydrogenolysis of propane and butane, which is essential at temperatures below 260°C. Steam reforming was shown to limit the overall reaction rate, whereas hydrogenolysis and CO2 methanation determined the product distribution in low- and high-temperature regions, respectively. Temperature dependencies of the product distribution for the LTSC of a model ternary methane-propane-butane mixture (85% methane, 10% propane, and 5% butane) have been successfully simulated using the three-step model suggested. © 2019 Wiley Periodicals, Inc.