A mathematical model of biomass downdraft gasification with an integrated pyrolysis model

Trninić, Marta; Stojiljković, Dragoslava; Manić, Nebojša; Skreiberg, Øyvind; Wang, Liang; Jovović, Aleksandar

doi:10.1016/j.fuel.2019.116867

Cited by 35 publications

(13 citation statements)

References 44 publications

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“…The heating value of the producer gas drops when the moisture content of the producer gas is increased to generate the heat necessary to maintain the target temperature, which is in good agreement with the results of Trninić et al. 33. More energy is required to eliminate the higher moisture content, which is never regained.…”

Section: Resultssupporting

confidence: 90%

Kinetic Modeling of Biomass Gasification in the Reduction Zone Using Various Gasification Agents

2022

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The depletion of fossil fuels and global warming have incentivized research into alternative and ecologically benign fuels. Among the most promising options being investigated is the production of hydrogen from biomass. This work investigated the kinetic modeling of the reduction zone for hydrogen production from a wide range of biomass types and conducted a theoretical comparison between various gasification agents (air, steam, and air/steam). The proposed model helps to ascertain the best biomass and agent for attaining the highest hydrogen yield and the lowest environmental contamination in terms of detrimental CO 2 emissions. The results show that steam gasification of plastic provides the highest hydrogen yield and that rubber could be considered the most environmentally friendly biomass.

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Section: Resultssupporting

confidence: 90%

Kinetic Modeling of Biomass Gasification in the Reduction Zone Using Various Gasification Agents

2022

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“…Distribution of products specified according to the original ultimate and proximate compositions of each biomass; yields and stoichiometric coefficients of the reactions in the Pyrolysis process are estimated using a methodology [3] based on second-order equations for the temperature.…”

Section: Pyrolysis Productsmentioning

confidence: 99%

Modeling and Simulation of Biomass Pyrolysis and Gasification Processes

Maldonado

Lenzi

Gomes

et al. 2022

22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, Energy and Clean Technologies, VOL 22, ISS

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For many years, oil derivatives, natural coal, and natural gas were used and still are, as primary energy supply due to their calorific potential, and their great availability on the planet. However, the utilization of these feedstocks causes greenhouse effects and helped in global warming, creating a general concern about this issue, and leading to the creation of urgent measures to overcome these problems. Hence, guidelines and public policies were granted to guarantee the reduction of emissions and increase the portion of renewable sources in the energy system production, namely the use of biofuels produced from waste biomass such as straw, stover, husks, and shells. Thermochemical processes can convert biomass sources into energy and/or fuels with a high heating value through high-temperature treatments. It comprises combustion, pyrolysis and gasification, which can be employed together or separated, depending on the need. The product of gasification is Synthesis Gas, comprehended mainly by hydrogen gas and carbon monoxide, which can be used posteriorly to produce electric energy. In this process, many parameters as temperature, pressure, gasifying agent, biomass composition, gasifier configuration, etc, influence the final composition of the gas. A challenge to show the feasibility of Syngas production is trying to know the conversion yields and its composition to evaluate the efficiency of the process. Simulating Software helps in this task, bringing real processes closer to virtual ones. Through UniSim Design software, this work main objective is the creation and implementation of a hybrid model (Kinetic and Equilibrium approaches) able to predict the lignocellulosic biomass gasification products for Downdraft and Updraft gasifiers, using different sources such as olive and corn agricultural wastes, and grape bagasse residue from wine culture.

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“…Energy from biomass can be considered an environmentally friendly and renewable energy sources [1]. Biomass energy has a huge potential to come out with the world's energy demand while without increasing the environmental problems.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Rich Product Gas from Air–Steam Gasification of Indian Biomasses with Waste Engine Oil as Binder

Sharma¹,

Gupta²,

Pandey

2022

Waste Biomass Valor

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Present study concerns with the production of H2 rich product gas by thermochemical energy conversion having biomass gasification as a route for the four biomasses i.e., Kasai Saw Dust, Lemon Grass, Wheat Straw and Pigeon Pea Seed Coat. The biomasses are from the family of woody biomass, grasses, agricultural waste and food process industry wastes. Waste engine oil as an additive is used, which also acts as a binder. Air gasification and Air-steam gasification is applied and compared for product gas composition, hydrogen yield and other performance parameters like lower heating value, energy yield. Product gas constituents, hydrogen production is examined with different steam to biomass ratio (S/B ratio) and equivalence ratio. The equivalence ratio varies from 0.20-0.40 and the steam to biomass ratio varies between 0-4. The waster engine oil is mixed with the biomasses with different percentage of 5 and 10 wt%. For enhancement of feedstock quality palletization process is applied. The H2 yield is greatly affected by the equivalence ratio. Results show maximum H2 production and higher calorific value of product gas at an air to fuel of 0.26 for all the biomass pallets. Also, the S/B ratio observed as important aspect for hydrogen enrichment. Hydrogen yield is maximum at 2.4 steam to biomass ratio. This study considers the rarely studied Indian biomasses with waste engine oil as an additive for hydrogen-rich product gas production and will be beneficial for small scale hydrogen-rich syngas production considering the central Indian region originated biomasses. Statement of Novelty (SON):Research work belongs to eco-friendly use of rarely studied Indian biomass pallets. Equivalence air to fuel ratio (E/R ratio), steam to biomass ratio (S/B ratio) and waste engine oil as additive have been considered to upgrade H2 content and Calorific Value (CV) of the product gas. Novelty of work include use of waste engine oil as additive to make biomass pallets.

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A mathematical model of biomass downdraft gasification with an integrated pyrolysis model

Cited by 35 publications

References 44 publications

Kinetic Modeling of Biomass Gasification in the Reduction Zone Using Various Gasification Agents

Kinetic Modeling of Biomass Gasification in the Reduction Zone Using Various Gasification Agents

Modeling and Simulation of Biomass Pyrolysis and Gasification Processes

Hydrogen Rich Product Gas from Air–Steam Gasification of Indian Biomasses with Waste Engine Oil as Binder

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