Characterizing early stage sub-micron particle formation during pulverized coal combustion in a flat flame burner

Khatri, Dishant; Gopan, Akshay; Yang, Zhiwei; Adeosun, Adewale; Axelbaum, Richard L.

doi:10.1016/j.fuel.2019.115995

Cited by 20 publications

(3 citation statements)

References 28 publications

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“…Apart from typically chained or sintered soot agglomerates, the soot particles covered with an electron-beam sensitive amorphous surface and the complex mixed aggregates consisting of various types of particles were also observed for MKW. In a combustion system with the coexistence of organic hydrocarbon precursors and vaporized inorganic species, there was a high probability of forming the externally mixed or doped particles containing probably graphite soot, organic matter and inorganic elements at the same time [60,[75][76][77]. As a result, there might be a decrease of ultrafine particles and an increase of larger accumulation particles as indicated in Fig.…”

Section: Pm Size Distribution and Concentrationmentioning

confidence: 99%

Particulate emissions from a modern wood stove – Influence of KCl

Lin

Glarborg

2021

Renewable Energy

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Section: Pm Size Distribution and Concentrationmentioning

confidence: 99%

Particulate emissions from a modern wood stove – Influence of KCl

Lin

Glarborg

2021

Renewable Energy

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“…The mass proportion of small particles (<0.10 mm) increases with the increase in gas pressure, suggesting that the micronization effect is enhanced. The literature states that the micronization effect is related to the complexity of coal-gas two-phase flow (Khatri et al, 2019). The increase in the mass proportion of small particles means that a higher gas pressure during CGB not only causes more damage, but also a more complicated two-phase flow that results in more collision and friction between coal fragments during ejection.…”

Section: Effect Of Gas Pressure On Outburst Intensitymentioning

confidence: 99%

A Testing Apparatus for Gas-Driven Coal and Gas Outbursts and its Application

et al. 2022

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In this study, a multi-physics coal and gas outburst experimental apparatus is developed to allow investigating the gas-driven mechanism behind the disaster caused by coal and gas outbursts in tectonic regions. The apparatus can simulate the coal and gas outbursts under different initial geo-stresses, gas pressures and temperatures. By integrating acoustic emission sensors in the holes on axial platens, acoustic signals from coal samples during the whole test can be monitored. A series of testability experiments were conducted on the developed apparatus to verify its performance. The damage characteristics and outburst occurrence of raw coal under different gas pressures were experimentally studied and that provided a more complete theoretical basis for coal and gas outburst. The degree of fragmentation of coal samples and the mass proportion distributions of the outburst pulverized coal after outbursts under different gas pressures were analyzed, as a reference for exploring the evolutionary characteristics of coal and gas outburst with gas-driven action.

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“…Air pollution is related to emissions, a major green technology issue affecting everyone in many countries. Air pollution is also related to the emission sources, such as biomass burning 1,2) , industrial combustion process 3) , coal combustion [4][5][6] , and fuel combustion [7][8][9] . These emissions are divided into particulate and gaseous emissions.…”

Section: Introductionmentioning

confidence: 99%

A Gravimetry-Based Fine Particle Concentration Measurement System for Humid Environment Using Graphene Oxide Layer

Budianto,

Wirawan,

Ramadian Ridho Illahi

et al. 2023

Evergreen

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Recent studies have developed fine particle measurement systems using many methods. However, most of them are high-cost and unsuitable for harsh conditions. This study introduces a portable fine particle concentration system based on a gravimetry principle for air quality measurement in a highly humid environment. This study used a bare QCM (Q1) and graphene oxidecoated QCM (Q2) as the fine particle sensors. All sensors were installed inside a sensor box and tested at two different humidity levels: 75% (normal humidity) and 95% (high humidity). The sensors were tested using fine particle emissions (diameter 0.01 -2.5 µm) emitted from several combustion sources (three biomass samples). A handheld particle concentration measurement device was used as the comparator for the measurement system. The results show that the uncoated QCM has a lower frequency response than the GO-coated QCM. The bare QCM does not show significant accuracy and linearity. As expected, the coated QCM performs better than the uncoated QCM, where the peak accuracies of the coated QCM are 98% and 99% for normal and high humidities. The linearity and sensitivity levels of the coated QCM are 95-99% and 0.59 -1.76 Hz m 3 ug -1 . These performances confirm the reliability and ability of the developed system using GO layer and QCM to be employed as a fine particle emission sensing device in a humid environment.

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Characterizing early stage sub-micron particle formation during pulverized coal combustion in a flat flame burner

Cited by 20 publications

References 28 publications

Particulate emissions from a modern wood stove – Influence of KCl

Particulate emissions from a modern wood stove – Influence of KCl

A Testing Apparatus for Gas-Driven Coal and Gas Outbursts and its Application

A Gravimetry-Based Fine Particle Concentration Measurement System for Humid Environment Using Graphene Oxide Layer

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