A novel bipolar electrostatic ionizer for charged polypropylene granules used in a pneumatic powder transport facility

Choi, Kwangseok; Mogami, Tomofumi; Suzuki, Toshisada; Yamaguma, Mizuki

doi:10.1016/j.jlp.2016.01.010

Cited by 11 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This previous work provided an effective method for studying dielectric discharging. T. Suzuki et al described the mechanism of the electrification of particles via numerical approaches [19] and experimentally investigated the electrostatic discharging [20,21]. An electrostatic ionizer with a modeling test device was developed to measure the charge-neutralizing current.…”

Section: Introductionmentioning

confidence: 99%

Charge Characteristics of Dielectric Particle Swarm Involving Comprehensive Electrostatic Information

Feng,

Shen,

Wang

et al. 2023

Micromachines

View full text Add to dashboard Cite

The triboelectrification effect caused by dynamic contact between particles is an issue for explosions caused by electrostatic discharging (ESD) in the triboelectric nanogenerators (TENGs) for powering the flexible and wearable sensors. The electrostatic strength of dielectric particles (surface charge density, surface potential, electric field, etc.) is essential to evaluate the level of ESD risk. Those differential electrostatic characteristics concerned with unhomogenized swarmed particles cannot be offered via in-current employed-joint COMSOL 6.1 simulation, in which the discrete charged dielectric particles are mistakenly regarded as continuous ones. In this paper, the hybrid discrete element method (EDEM tool) associated with programming in COMSOL Multiphysics 6.1 with MATLAB R2023a was employed to obtain the electrostatic information of the triboelectric dielectric particle swarm. We revealed that the high-accuracy strengths of electric potential and electric field inside particle warm are crucial to evaluating ESD risk. The calculated electrostatic characteristics differ from the grid method and continuous method in the surface potential and electric field. This EDEM-based simulation method is significant for microcosmic understanding and the assessment of the ESD risk in TENGs.

show abstract

Section: Introductionmentioning

confidence: 99%

Charge Characteristics of Dielectric Particle Swarm Involving Comprehensive Electrostatic Information

Feng,

Shen,

Wang

et al. 2023

Micromachines

View full text Add to dashboard Cite

show abstract

“…In terms of powder static elimination, Choi et al (2016) has developed a new type of bipolar electrostatic ionizer that can reduce the specific charge of the powder by 85%. Choi et al (2013) has developed a new type of AC electrostatic ionizer, the specific charge obtained by the AC electrostatic ionizer is about 1/8 of that without an AC ionizer.…”

Section: Introductionmentioning

confidence: 99%

Analysis of static electricity generation and elimination in the process of food powder screw feeding

Shen

Wang

et al. 2022

J Food Process Engineering

View full text Add to dashboard Cite

The static electricity in the powder can easily cause poor packaging accuracy, incomplete heat‐sealing of the packaging bag and certain safety hazards. Therefore, the electrostatic generation and elimination of wheat flour and wheat starch were studied in the process of powder screw feeding. Firstly, taking powder particle size, screw speed and conveying distance as influencing factors, the law of static electricity generation in the process of powder screw conveying is studied. Then, an adjustable DC power supply and an ion fan were used to apply voltage and ion wind during the powder screw feeding process to study the elimination of powder static electricity. The research results show that the electrostatic charge of wheat flour and wheat starch is positive. The greater the screw speed, the more severe the powder collision and friction, and the greater the increase in powder charge‐to‐mass ratio. The larger the conveying distance, the greater the increase in the powder‐to‐mass ratio, and when the conveying distance reaches 5200 mm, the experimental powder‐to‐mass ratio tends to be stable. The gain and loss of the charge of wheat starch with small particle size is obviously greater than that of wheat flour with large particle size. The ability and stability of adding ion wind at the outlet of the screw feeder to eliminate static electricity are obviously stronger than the ability and stability of adding voltage to eliminate static electricity. Practical applications The static electricity generated in the process of screw conveying and feeding causes trouble to the packaging weighing, packaging sealing and safety production of powder. Therefore, this paper studies the electric characteristics of food powder in the process of screw transportation and the influence of various factors on the electrostatic generation law, and also through experiments to compare the two methods of electrostatic elimination. This study provides ideas and references for reducing the generation and elimination of static electricity in the process of screw transportation of food powder, so as to improve the packaging accuracy, packaging quality and reduce safety risks in actual industrial production.

show abstract

Multiobjective optimization of an ionizer nozzle structure based on RSM and CFD

Zhang,

Li,

et al. 2024

Struct Multidisc Optim

View full text Add to dashboard Cite

A novel bipolar electrostatic ionizer for charged polypropylene granules used in a pneumatic powder transport facility

Cited by 11 publications

References 7 publications

Charge Characteristics of Dielectric Particle Swarm Involving Comprehensive Electrostatic Information

Charge Characteristics of Dielectric Particle Swarm Involving Comprehensive Electrostatic Information

Analysis of static electricity generation and elimination in the process of food powder screw feeding

Multiobjective optimization of an ionizer nozzle structure based on RSM and CFD

Contact Info

Product

Resources

About