Numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel production
Currently, there is a growing interest in various alternative energy sources due to the global energy scenario and rising crude oil prices. Renewable sources of energy like biomass can be exploited to produce energy-rich syngas. The biomass gasification process converts energy-rich solid fuel into s...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
|
| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X22006657 |
| _version_ | 1811206553798180864 |
|---|---|
| author | J. Manu Vasudeva Madav |
| author_facet | J. Manu Vasudeva Madav |
| author_sort | J. Manu |
| collection | DOAJ |
| description | Currently, there is a growing interest in various alternative energy sources due to the global energy scenario and rising crude oil prices. Renewable sources of energy like biomass can be exploited to produce energy-rich syngas. The biomass gasification process converts energy-rich solid fuel into syngas by partial combustion. In the present study, rice husk gasification using steam and, a mixture of steam and CO2 at temperatures ranging from 650°C to 750 °C and steam to biomass ratio of 0.5–2 is studied. Steam gasification enhances hydrogen production, and mixing with CO2 helps optimizing the H2/CO ratio. The study uses the Euler-Euler method in combination with kinetic theory granular of flow which is modeled using the computational fluid dynamics approach implementing user-defined functions for heterogeneous char reactions. The increased particle diameter harms the gasification performance due to the lower heating value of the syngas. As the steam to biomass ratio is increased, there is a positive effect on syngas quality, while temperature has a negative effect. The addition of CO2 increases the CO conversion in the syngas. The heterogeneous reaction rate vanishes close to zero after a height of 0.4 m, where all solid carbon is consumed. |
| first_indexed | 2024-04-12T03:49:03Z |
| format | Article |
| id | doaj.art-dac2c6c762334e1a9c7a26f4d6befcd3 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-12T03:49:03Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-dac2c6c762334e1a9c7a26f4d6befcd32022-12-22T03:49:02ZengElsevierCase Studies in Thermal Engineering2214-157X2022-11-0139102429Numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel productionJ. Manu0Vasudeva Madav1National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, IndiaCorresponding author.; National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, IndiaCurrently, there is a growing interest in various alternative energy sources due to the global energy scenario and rising crude oil prices. Renewable sources of energy like biomass can be exploited to produce energy-rich syngas. The biomass gasification process converts energy-rich solid fuel into syngas by partial combustion. In the present study, rice husk gasification using steam and, a mixture of steam and CO2 at temperatures ranging from 650°C to 750 °C and steam to biomass ratio of 0.5–2 is studied. Steam gasification enhances hydrogen production, and mixing with CO2 helps optimizing the H2/CO ratio. The study uses the Euler-Euler method in combination with kinetic theory granular of flow which is modeled using the computational fluid dynamics approach implementing user-defined functions for heterogeneous char reactions. The increased particle diameter harms the gasification performance due to the lower heating value of the syngas. As the steam to biomass ratio is increased, there is a positive effect on syngas quality, while temperature has a negative effect. The addition of CO2 increases the CO conversion in the syngas. The heterogeneous reaction rate vanishes close to zero after a height of 0.4 m, where all solid carbon is consumed.http://www.sciencedirect.com/science/article/pii/S2214157X22006657Biomass gasificationFluidized bedComputational fluid dynamicsBiofuelRenewable energy |
| spellingShingle | J. Manu Vasudeva Madav Numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel production Case Studies in Thermal Engineering Biomass gasification Fluidized bed Computational fluid dynamics Biofuel Renewable energy |
| title | Numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel production |
| title_full | Numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel production |
| title_fullStr | Numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel production |
| title_full_unstemmed | Numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel production |
| title_short | Numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel production |
| title_sort | numerical modeling of rice husk gasification in fluidized bed gasifier for sustainable biofuel production |
| topic | Biomass gasification Fluidized bed Computational fluid dynamics Biofuel Renewable energy |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X22006657 |
| work_keys_str_mv | AT jmanu numericalmodelingofricehuskgasificationinfluidizedbedgasifierforsustainablebiofuelproduction AT vasudevamadav numericalmodelingofricehuskgasificationinfluidizedbedgasifierforsustainablebiofuelproduction |