A review on biomass ignition: Fundamental characteristics, measurements, and predictions

Mularski, Jakub; Li, Jun

doi:10.1016/j.fuel.2023.127526

Cited by 15 publications

(2 citation statements)

References 216 publications

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“…As biomass is composed primarily of 'current' carbon (i.e. carbon extracted from the atmosphere during a plant’s lifetime), the process is close to carbon-neutral 4 . The combustion of biomass typically emits significant amounts of carbonaceous particulate matter (PM; also referred to as soot) 5 .…”

Section: Introductionmentioning

confidence: 99%

Enhancing soot oxidation using microtextured surfaces

Oren,

McTaggart-Cowan,

Khan

2024

Sci Rep

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Biomass combustion provides energy needs for millions of people worldwide. However, soot accumulation on the combustors’ walls significantly reduces heat transfer efficiency. Herein, we demonstrate how microtextured surfaces minimize soot accumulation by enhancing soot oxidation. We investigate soot layers from the combustion of paraffin wax as a model for wood-based soot, and find that randomly microtextured glass obtained by sandblasting shows a 71% reduction in the time taken to oxidize 90% of surface soot coverage when compared to smooth glass at 530 °C. We also study grooved microtextures fabricated via laser ablation and find that grooves with widths between 15 and 50 µm enhance soot oxidation, while the expedited advantage is lost when the groove width is 85 µm. X-ray photoelectron spectroscopy validates the superior extent of soot removal on microtextures down to a sub-nanometer length-scale. The high density of sharp features such as peaks and edges on microtextures, and the conformality of the soot layer to the microtextures contribute to increased soot oxidation. We also demonstrate enhanced soot oxidation on microtextured stainless steel, the principal material of construction in biomass combustors. Microtextured surfaces that facilitate soot oxidation upon contact could significantly improve performance and longevity in various combustion applications.

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Section: Introductionmentioning

confidence: 99%

Enhancing soot oxidation using microtextured surfaces

Oren,

McTaggart-Cowan,

Khan

2024

Sci Rep

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“…And the biomass utilization consists of combustion, thermochemical conversion, and biochemical conversion [6,7]. The combustion biomass combustion process utilizes the heat in the biomass through simple incineration, while its thermal efficiency is low, resulting in energy waste [8][9][10]. And the biochemical conversion is the degradation of organic matter in biomass by microorganisms and its transformation into a more valuable fuel or biofuel [11,12].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Simulation and Experimental Study of Fluidization Characteristics of a Bubbling Fluidized Bed in Biomass Gasification

Gao,

Zhu,

Fang

et al. 2024

Energies

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Traditional fossil energy sources still dominate the world energy structure. And fully utilizing biomass is a viable approach for energy transition. A bubbling fluidized bed has better heat and mass transfer, while particle agglomeration limits the development of its industrial application. In this paper, two-phase flow characteristics of a bubbling fluidized bed are investigated by combining numerical simulations and fluidized bed gasification experiments. Numerical simulations found that the bed fluidization height reached twice the initial fluidization height at the 0.054 m initial fluidization height with uniform particle distribution. Fluidized bed gasification experiments found that syngas yield increased with increasing temperature. The carbon conversion efficiency reached 79.3% and the effective gas production was 0.64 m3/kg at 850 °C. In addition, when the water vapor concentration reached 15%, the carbon conversion efficiency and effective gas production reached the maximum values of 86.01% and 0.81 m3/kg, respectively.

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