Energetic analysis of gasification of biomass by partial oxidation in supercritical water

Guan, Qingqing; Wei, Chaohai; Chai, Xin‐Sheng; Ning, Ping; Tian, Senlin; Gu, Junjie; Chen, Qiuling; Miao, Rongrong

doi:10.1016/j.cjche.2014.10.001

Cited by 24 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the perspective of the process design, a high ratio of water-to-lignin resulted in a lower likelihood of char formation by reducing the effective concentration of repolymerizable species at any point during the experiments, though if the concentration of lignin was too low, it could result in an unreasonably big reactor for a specific gas output. The degree of endothermicity of the overall process was also strongly dependent on the ratio of lignin-to-water, with high lignin concentrations allowing for breaking even in terms of the energy spent [53], though no specific reports for energy efficiency were found for lignin gasification in super-critical water conditions.…”

Section: Lignin Gasification In Water or Steammentioning

confidence: 99%

Lignin Gasification: Current and Future Viability

2022

View full text Add to dashboard Cite

The consumption of fossil fuels is one of the main drivers of climate change. Lignin derived from biomass is a carbon-neutral raw feedstock, and its conversion into fuels is gaining much attention. The gasification of biomass aims to transform heterogeneous feedstocks into syngas and heat that could be used for various purposes. Lignin is a biomass feedstock of special interest due to its particular properties and its ability to be obtained in abundant quantities as a side product from the paper pulp industry as well as the growing cellulosic ethanol industry. This review explores the existing works regarding lignin gasification from different perspectives and compares the results obtained with other existing thermochemical processes, in addition to providing a perspective on the long-term fate of gasification as a technology compared to other emerging technologies. The analysis indicates that while lignin gasification may grow in importance in the near future due to increased interest in hydrogen production, its potential in emerging applications indicates that lignin may be too valuable to be used purely for energy generation purposes, and applications that take advantage of its inherent chemical compounds are expected to take priority in the long-term.

show abstract

Section: Lignin Gasification In Water or Steammentioning

confidence: 99%

Lignin Gasification: Current and Future Viability

2022

View full text Add to dashboard Cite

show abstract

“…For instance, a classical and complete approach on energetic evaluation has been proposed by Marias et al [14]. The same kind of work have been conducted by Guan et al [15] for partial oxidation of biomass. However, these works are dedicated only to the gasification reactor and not to the complete system up to the production of the final useful gas.…”

Section: Introductionmentioning

confidence: 97%

Process simulation and energetic analysis of different supercritical water gasification systems for the valorisation of biomass

Ondze

Ferrasse

Boutin

et al. 2018

The Journal of Supercritical Fluids

View full text Add to dashboard Cite

The energetic efficiency for the supercritical gasification of biomass is studied for three cases: hydrogen and methane production, heat and electricity cogeneration. Experimental results from the gasification of glucose are used to represent the gasifier. The other unit operations are simulated using the software ProsimPlus through thermodynamic equilibrium calculations. Simulations are conducted at different pressure, temperature and initial biomass concentration. The energetic and exergetic yields are calculated, as well as the minimum heat requirement estimated from a pinch analysis. All the results are then exploited to determine optimal conditions for two systems: adiabatic and isothermal. The optimal temperature ranges from 584 to 626°C, whereas the optimal initial concentration ranges from 51 to 87 g L −1. The system giving the best result in term of global energetic optimisation is methane production in isothermal conditions, followed by methane production in adiabatic conditions. The optimal energy efficiencies are 94% and 91% respectively.

show abstract

“…Partial oxidation-this also operates under high temperature, includes CO2 emission, is adapted for only few molecules, and requires a high amount of oxygen. The H2 yield is estimated to be around 16-140 g/kg feedstock [107,108].…”

mentioning

confidence: 99%

A Critical Review of Renewable Hydrogen Production Methods: Factors Affecting Their Scale-Up and Its Role in Future Energy Generation

Nutakor²,

et al. 2022

View full text Add to dashboard Cite

An increase in human activities and population growth have significantly increased the world’s energy demands. The major source of energy for the world today is from fossil fuels, which are polluting and degrading the environment due to the emission of greenhouse gases. Hydrogen is an identified efficient energy carrier and can be obtained through renewable and non-renewable sources. An overview of renewable sources of hydrogen production which focuses on water splitting (electrolysis, thermolysis, and photolysis) and biomass (biological and thermochemical) mechanisms is presented in this study. The limitations associated with these mechanisms are discussed. The study also looks at some critical factors that hinders the scaling up of the hydrogen economy globally. Key among these factors are issues relating to the absence of a value chain for clean hydrogen, storage and transportation of hydrogen, high cost of production, lack of international standards, and risks in investment. The study ends with some future research recommendations for researchers to help enhance the technical efficiencies of some production mechanisms, and policy direction to governments to reduce investment risks in the sector to scale the hydrogen economy up.

show abstract

Energetic analysis of gasification of biomass by partial oxidation in supercritical water

Cited by 24 publications

References 30 publications

Lignin Gasification: Current and Future Viability

Lignin Gasification: Current and Future Viability

Process simulation and energetic analysis of different supercritical water gasification systems for the valorisation of biomass

A Critical Review of Renewable Hydrogen Production Methods: Factors Affecting Their Scale-Up and Its Role in Future Energy Generation

Contact Info

Product

Resources

About