On the forming mechanism of the cleaning airflow of pulse-jet fabric filters

Cai, Ji-Ying; Wang, Hao; Zhang, Cong; Yu, Jiaqi; Wang, Ting

doi:10.1080/10962247.2017.1311967

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…Several methods have been introduced for cleaning surfaces from dust and most of these methods require external power sources, such as compressed air 25 , mechanical brushing 26 , water pump 27 , etc. In addition, self-cleaning of surfaces via water droplet rolling/sliding still requires external power for removing dust from surfaces; however, external power required for self-cleaning remains less than those of other cleaning processes.…”

Section: Resultsmentioning

confidence: 99%

“…This significantly reduces the dust adhesion and eases dust mitigation under the gravitational influence. However, the methods developed for dust mitigation such as compressed air blowing 25 or liquid jet cleaning 27 or droplet rolling 4 require large facilities and clean water, which may be difficult to obtain in regions where the clean water sources are limited. Since hydrofluoric acid is ready available at low cost, adopting hydrofluoric acid treatment on dust particles can ease the additional power requirements for dust mitigation from surfaces.…”

Section: Resultsmentioning

confidence: 99%

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Adhesion characteristics of solution treated environmental dust

Adukwu

Yilbaş

Jalilov

et al. 2020

Sci Rep

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Environmental dust is modified towards self-cleaning applications under the gravitational influence. Dust particles are collected in the local area of Dammam in Saudi Arabia and they are treated with a dilute hydrofluoric acid solution. The changes in chemical and adhesion characteristics of the dust particles prior and after the solution treatment are analyzed. Force of adhesion and work required to remove dust from hydrophobic and hydrophilic glass surfaces are assessed, separately, for solution treated and collected dust. We show that aqueous hydrofluoric acid solution treatment modifies some dust components while causing the formation of submicron cracks and nano/submicron porous/pillars like textures on the dust particles. The texture generated on dust surfaces after the solution treatment has a great influence on dust adhesion characteristics. Hence, the solution treated dust particles result in lower adhesion on hydrophobic and hydrophilic glass surfaces as compared to that of untreated dust. The gravitational force enables to remove solution treated dust from inclined glass surfaces, which becomes more apparent for hydrophobic surfaces. Climate change causes increased cycles of dust storms and dust settlement on surfaces, especially in urban areas, significantly influences the urban life in terms of agriculture 1 , health 2 , renewable energy harvesting 3 , etc. Mitigation of dust from surfaces becomes one of the recent challenges and, particularly, dust removal from energy harvesting device surfaces becomes necessary towards sustaining device performance. Using the gravitational influence only removing dust from surfaces becomes fruitful. The inclination of the surface can create the gravitational influence while causing dust particles displacement on the surface 4. However, frictional and adhesion forces (such as van der Walls forces) between the particles and the surface generate a retardation effect on the motion of dust particles along the inclined surface. Since the dust particle size varies and large size particles can cause avalanche influence on the remaining small size dust particles while enhancing dust motion on the surface 4. However, some compounds in the dust particles, such as alkaline and alkaline earth metal compounds, do not satisfy the stoichiometric elemental ratio 5 ; hence, this causes ionic forces to be created on the particle surface while contributing to the interfacial force between the dust and inclined surfaces. This also enhances the pinning effect of the dust particles on the inclined surface. However, lowering surface energies of both the dust particles and the inclined surface, via chemical modification, can reduce the interfacial attraction between both surfaces. Therefore, investigation of dust particles removal from inclined surfaces with and without chemical modifications becomes essential for dust cleaning applications under the gravitational influence. Dust composes of several elements and compounds, which depend on the geomorphologic structure of the landscapes 5. S...

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Section: Resultsmentioning

confidence: 99%