Coffee Pulp Gasification for Syngas Obtention and Methane Production Simulation Using Ni Catalysts Supported on Al2O3 and ZrO2 in a Packed Bed Reactor
Abstract
:1. Introduction
2. State of the Art
2.1. Syngas from Biomass as a Raw Material for the Methanation Catalytic Process
2.2. Catalytic Methane Production
2.3. Ni/ZrO2 Catalyst
2.4. Commercial Ni/Al2O3 Catalyst
3. Results and Discussion
3.1. Biomass Chemical Composition
3.2. Syngas Description
3.3. Catalytic Simulation of Methanation
4. Materials and Methods
4.1. Elemental Analysis
4.2. Gasification Experimental System
4.3. Mathematical Model for the Methanation Catalytic Packed Bed Reactor Simulation
- Negligible radial diffusion: concentration and temperature profiles were assumed to be constants, which led to a one-dimensional model.
- Constant radial speed.
- Temperature and pressure profiles in the catalyst were assumed to be constants (homogeneous catalytic particles).
- As in [13], the mechanisms related to catalyst deactivation, such as sulfur poisoning or carbon formation via the Boudouard reaction, were not taken into consideration or disregarded in the present study.
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Sample Availability
References
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Catalyst | Ea (kJ mol−1) | α | β | A (L g−1 h−1) |
---|---|---|---|---|
Ni/ZrO2-P | 93.61 | 0.65 | 0.29 | 2.48 × 1010 |
Ni/ZrO2-C | 93.12 | 0.44 | 0.54 | 6.93 × 109 |
Parameter | KCO | KH2O | KCO2 | KH2 |
---|---|---|---|---|
Q (KJ/mol) | 40.6 | 14.5 | 9.72 | 52.0 |
Ko (bar−1) | 2.39 × 10−3 | 6.09 × 10−1 | 1.07 | 5.2 × 10−5 |
Parameter | kCO2,meth | kRWGS | kCO,meth |
---|---|---|---|
Ea (KJ/mol) | 110 | 97.1 | 97.3 |
ko (mol/min·g) | 1.14 × 108 | 1.78 × 106 | 2.23 × 108 |
N | C | H | O | S |
---|---|---|---|---|
2.53% | 44.07% | 5.93% | 47.47% | 0.00% |
Steam/Biomass (S/B) Ratio | S/B 0.5 | S/B 1.0 | ||
---|---|---|---|---|
Temperature (°C) | 700 | 800 | 700 | 800 |
Hydrogen (%) | 48.46 | 46.51 | 54.41 | 50.19 |
Methane (%) | 0.27 | 0.23 | 0.25 | 0.09 |
Carbon monoxide (%) | 24.21 | 44.06 | 18.87 | 37.81 |
Carbon dioxide (%) | 25.05 | 7.68 | 24.81 | 11.39 |
Ethane (%) | 0.14 | 0.02 | 0.07 | 0.03 |
Ethylene (%) | 1.03 | 0.80 | 0.59 | 0.09 |
Propane (%) | 0.74 | 0.39 | 0.82 | 0.37 |
H2S (%) | 0.1 | 0.31 | 0.18 | 0.03 |
H2/CO2 ratio | 1.93 | 6.06 | 2.19 | 4.41 |
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Aristizábal-Alzate, C.E.; Dongil, A.B.; Romero-Sáez, M. Coffee Pulp Gasification for Syngas Obtention and Methane Production Simulation Using Ni Catalysts Supported on Al2O3 and ZrO2 in a Packed Bed Reactor. Molecules 2023, 28, 7026. https://doi.org/10.3390/molecules28207026
Aristizábal-Alzate CE, Dongil AB, Romero-Sáez M. Coffee Pulp Gasification for Syngas Obtention and Methane Production Simulation Using Ni Catalysts Supported on Al2O3 and ZrO2 in a Packed Bed Reactor. Molecules. 2023; 28(20):7026. https://doi.org/10.3390/molecules28207026
Chicago/Turabian StyleAristizábal-Alzate, Carlos Esteban, Ana Belén Dongil, and Manuel Romero-Sáez. 2023. "Coffee Pulp Gasification for Syngas Obtention and Methane Production Simulation Using Ni Catalysts Supported on Al2O3 and ZrO2 in a Packed Bed Reactor" Molecules 28, no. 20: 7026. https://doi.org/10.3390/molecules28207026