Open Access
ARTICLE
Spatio-Temporal Characteristics of Heat Transfer of Methanation in Fluidized Bed for Pyrolysis and Gasification Syngas of Organic Solid Waste
Danyang Shao1, Xiaojia Wang1,*, Delu Chen1, Fengxia An1,2
1
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy & Environment, Southeast
University, Nanjing, 210096, China
2
China Energy Science and Technology Research Institute Co., Ltd., Nanjing, 210023, China
* Corresponding Author: Xiaojia Wang. Email:
Journal of Renewable Materials 2023, 11(10), 3659-3680. https://doi.org/10.32604/jrm.2023.029220
Received 08 February 2023; Accepted 03 March 2023; Issue published 10 August 2023
Abstract
Methanation is an effective way to efficiently utilize product gas generated from the pyrolysis and gasification of
organic solid wastes. To deeply study the heat transfer and mass transfer mechanisms in the reactor, a successful
three-dimensional comprehensive model has been established. Multiphase flow behavior and heat transfer
mechanisms were investigated under reference working conditions. Temperature is determined by the heat release
of the reaction and the heat transfer of the gas-solid flow. The maximum temperature can reach 951 K where the
catalyst gathers. In the simulation, changes in the gas inlet velocity and catalyst flow rate were made to explore
their effects on CO conversion rate and temperature for optimization purposes. As the inlet gas velocity increases
from 2.78 to 4.79 m/s, the CO conversion rate decreases from 81.6% to 72.4%. However, more heat is removed
from the reactor, and the temperature rise increases from 78.03 to 113.49 K. When the catalyst flow rate is
increased from 7.18 to 17.96 kg/(m2
·s), the mass of the catalyst in the reactor is increased from 0.0019 to
0.0042 kg, and the CO conversion rate is increased from 66.8% to 81.5%. However, this increases the maximum
temperature in the reactor from 940.0 to 966.4 K.
Keywords
Cite This Article
Shao, D., Wang, X., Chen, D., An, F. (2023). Spatio-Temporal Characteristics of Heat Transfer of Methanation in Fluidized Bed for Pyrolysis and Gasification Syngas of Organic Solid Waste.
Journal of Renewable Materials, 11(10), 3659–3680.