Review of Electrostatic Precipitator Device for Reduce of Diesel Engine Particulate Matter

Abstract

In the last few decades, electrostatic precipitators (ESP) have been modernized and many new methods have been implemented to increase in term of cleaning efficiency for particles in the sub micrometer size range. An electrical force has been implemented to increase the collection efficiency for removing particulate matter (PM) in the diesel engine. Based on results of particle properties and health effects studies, measurement systems are being discussed. This paper reviews the works that have been done in term of fundamental of ESP and electrical properties of ESP. The concept of ESP is ESPs only give electrostatic force to the particle. Thus, the gasses are not directly to the ESP and will results comparatively lower pressure drop. Therefore, the cost can be lowered down than the other filtration systems such as cyclonic and mechanical filtration. ESP In order to accumulate the charge by the particles, several factors will be taken into account such as particle size, dielectric constant and residence time in ESP. Also there are two type charging mechanism which are diffusion and field charging. The result of study is ESP can archive 99 percent of removal efficiency for a certain type of particulate.

A High Electrical Field Effect to Ultrafine Particle Filter Performance on Motor Vehicle Exhaust

“…Diffusion charging and field charging are the types of charging mechanisms [15]. The Brownian equation was used to calculate the motion of particles.…”

“…These phenomena are called diffusion charging. The diffusion can be estimated based the equation as below [15]:…”

“…We assume that particles with higher diameter have higher potential to collide when the particles fill the gap of the filter. Large particles are potentially impacted by an electric field [15]. The emission temperature does not affect efficiency.…”

Reducing of industrial atmospheric emissions using electrocyclone

“…Cyclones are high-performance but are ineffective for trapping micron particles [4]. Electrofilters are effective for particles PM2.5 but are high costly [5,6]. Many researchers have attempted to combine two or even three types of gas cleaning devices in a single unit to improve the performance of its operation [7,8].…”

Regeneration of Sooty Surface Using Nanosecond Pulsed Dielectric Barrier Discharge

“…In particular, the electrostatic precipitation is considered as the most promising technology for the collection of ultrafine particles emitted from diesel engines [8][9][10][11][12]. However, it should be cleaned or regenerated periodically to maintain its performance.…”