The injection of sorbents upstream of a particulate control device is one of the most promising methods for controlling mercury emissions from coal-fired utility boilers with electrostatic precipitators and fabric filters. Studies carried out at the bench-, pilot-, and fullscale have shown that a wide variety of factors may influence the mercury removal effectiveness. These factors include merc...

Mercury (Hg) is a toxic air pollutant with coal-fired utility plants being the largest anthropogenic Hg emission source in the United States. The extent that Hg can be removed from power plants using conventional air pollution control devices (APCDs) is significantly affected by Hg speciation in flue gas. Oxidized Hg (Hg) is preferable to elemental Hg (Hg) in that Hg is less volatile and solubl...

The intention of this project is to attempt to update the critical review and cross section data compilation of Trajmar et al. [1] to account for measurements over the past 15 years. As in the original review the emphasis will be on both differential and integral cross section measurements at low to intermediate energies (meV-1000 eV) for elastic scattering, rotational, vibrational and electron...

Electric agglomeration is the process in which particles are charged in electric fields and coagulate, which is enhanced by electric force or turbulence. The collection efficiency of submicron particles is improved, which can be a solution to submicron particle abatement in traditional electrostatic precipitators (ESPs), by using a pre-charger to increase median particle diameter and realizing ...

The use of electrical corona discharge opens broad possibilities for effective development of electrostatic precipitators (ESPs). The object of the work is the study of the corona discharge in different gases at high temperature / high pressure (HT/HP) conditions. The studies are carried out in a HT/HP ionizer in the pure synthetic air, N2, He and He-synthetic air and He-N2 gas mixtures. Corona...

Air pollution in Jos, Nigeria, is concerning due to a variety of anthropogenic sources which expose residents possible respiratory health risks. Good emission source data and an understanding all elements connected air the foundation for successful abatement. The study established model crosswind-integrated concentrations by solving advection-diffusion equation using reducible irreducible techn...

Iron and steel manufacturing, especially the sintering process, is highly energy- pollution-intensive, responsible for substantial emissions of major air pollutants in China, including particulate matter (PM), sulfur dioxide (SO2), nitrogen oxides (NOx), which poses challenges to quality improvement country. In this study, we carried out a comprehensive analysis temporal spatial characteristic ...

Electrostatic precipitators (ESPs) are devices used in industry to eliminate polluting particles in gases. In order to supply them, an interface must be included between the three-phase main line and the required high DC voltage of tens of kilovolts. This paper describes an 80-kW power supply for such an application. Its structure is based on the series parallel resonant converter with a capaci...

Electrons produced in atmospheric pressure corona discharges are used for a ûariety of beneficial purposes including the destruction of gaseous contaminants, and surface treatment. In other applications, such as electrostatic precipitators and photocopiers, unintended reactions such as ozone production and deposition of silicon dioxide are detrimental. In both situations, a kinetic description ...