Research output: Contribution to journal › Article › peer-review
Three-step macrokinetic model of butane and propane steam conversion to methane-rich gas. / Uskov, S. I.; Shigarov, A. B.; Potemkin, D. I. et al.
In: International Journal of Chemical Kinetics, Vol. 51, No. 10, 10.2019, p. 731-735.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Three-step macrokinetic model of butane and propane steam conversion to methane-rich gas
AU - Uskov, S. I.
AU - Shigarov, A. B.
AU - Potemkin, D. I.
AU - Snytnikov, P. V.
AU - Kirillov, V. A.
AU - Sobyanin, V. A.
N1 - Publisher Copyright: © 2019 Wiley Periodicals, Inc.
PY - 2019/10
Y1 - 2019/10
N2 - 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.
AB - 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.
KW - associated petroleum gas
KW - butane
KW - flare gas
KW - kinetic study
KW - mathematical simulation
KW - methane production
KW - nickel catalyst
KW - propane
KW - steam reforming
KW - ETHANE
KW - HYDROGENOLYSIS
KW - HYDROCARBONS
KW - KINETICS
UR - http://www.scopus.com/inward/record.url?scp=85067394512&partnerID=8YFLogxK
U2 - 10.1002/kin.21304
DO - 10.1002/kin.21304
M3 - Article
AN - SCOPUS:85067394512
VL - 51
SP - 731
EP - 735
JO - International Journal of Chemical Kinetics
JF - International Journal of Chemical Kinetics
SN - 0538-8066
IS - 10
ER -
ID: 20641101