Computer simulation for assessment of electrostatic hazards in filling operations with powder

Ohsawa, A.

doi:10.1016/s0032-5910(03)00162-1

Cited by 37 publications

(16 citation statements)

References 16 publications

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“…When handled in air, the surfaces become triboelectrically charged and various phenomena occur; for instance, the charged particles in pneumatic transport lines or in fluidized beds experience electrostatic forces, and tend to adhere to the walls (Joseph and Klinzing, 1983;Nifuku et al, 1989;Adhiwidjaja et al, 2000;Guardiola et al, 1996;Yao et al, 2004). If the particles are excessively charged, an electrostatic discharge will occur, which can pose a risk of fire and explosion hazards (Jones and King, 1991;Ohsawa, 2003;Nifuku and Katoh, 2003). On the other hand, electrostatic forces can control the motion of charged particles; thus, many applications have been developed (Mazumder, 1999), e.g.…”

Section: Introductionmentioning

confidence: 99%

Triboelectric charging of powders: A review

Matsusaka

Maruyama

Matsuyama

et al. 2010

Chemical Engineering Science

518

336

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Particles are often electrostatically charged by frictional contact during powder-handling operations. This phenomenon is called 'triboelectric charging' or 'contact electrification'. The charged particles cause problems such as particle deposition and adhesion. In addition, if particles are excessively charged, an electrostatic discharge may occur, which can pose a risk of fire and explosion hazards; thus, to mitigate the adverse effects, it is important to elucidate the underlying triboelectric charging mechanisms. The electrostatics is, on the other hand, very useful in a number of applications that have been developed using the principles. In this review, the basic concepts and theories of charge transfer between solid surfaces are summarized, and chemical factors depending on materials and environmental effects are described. To theoretically analyze the process of particle charging, relevant models are discussed. Using the models, particle charging by repeated impacts on a wall is formulated. To experimentally evaluate particle charging, measurement and characterization methods are outlined. Furthermore, important applications and computer simulations are described.

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Section: Introductionmentioning

confidence: 99%

Triboelectric charging of powders: A review

Matsusaka

Maruyama

Matsuyama

et al. 2010

Chemical Engineering Science

518

336

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“…There is a lot of research work done on dust explosion (Holbrow & Tyldesley, 2003;Siwek, 1996) and electrostatic hazards (Glor, 2003;Ohsawa, 2003) in dryer and other solid storage equipment units. However, these scenarios are not yet subject of SREST method.…”

Section: Hot Discharging 6 Dust Explosionmentioning

confidence: 99%

Assessment of chemical process hazards in early design stages

Shah

Fischer

Hungerbühler

2005

Journal of Loss Prevention in the Process Industries

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“…Tribo electrostatic charging has numerous applications concerning electrophotography [1], electrostatic powder coating [2,3], drugs delivery and pharmaceutical application [2,[4][5][6], fire hazard and safety [7,8] and particulate separation. Tribo electrostatic separation has gained considerable attention in recent years in the field of mineral processing [9][10][11][12], coal preparation [13][14][15][16][17][18][19][20] and recycling industries [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%