Efficiency characteristic of electrostatic dust precipitation using solar energy

In this paper, solar photovoltaic technology and electrostatic dust removal technology are combined to design a solar electrostatic precipitator, and its operation effect and dust removal performance are studied. Starting from optimizing the structure of the dust precipitator, the electrode structure of the dust precipitator was improved, the area of dust collector per unit volume was increased, and the dust removal efficiency was improved. By changing different working conditions, different solubility, different voltage, and different dust removal efficiency. Finally, compared the dust removal efficiency of the finned tubular and snowflake dust precipitator. The results show that the snowflake dust precipitator works stably in sunny and cloudy weather, and the dust removal effect is the highest, followed by dry powder, and the cement dust removal effect is the worst. It is determined that the change of voltage within the set range has little influence on the dust removal efficiency, and the dust concentration has a great influence on the dust removal efficiency.

Development of the Tunnel Wet Dust Precipitator and Testing

The tunnel wet dust precipitator (TWDP) is designed and applied to the underground mine tunnel dust control. The TWDP is a modular design with the disc which the radiant fine stainless-steel filament and nozzle. Discs are used in serial in axial direction in the TWDP to lift the collection efficiency, and discs are parallel in a section to enlarge the volumetric flow rate. The TWDP, which is connected with the local fan, is mounted at the discharging mine platform, and the experiment is conducted for its performance testing. Results show that the collection efficiency for respirable dust is above 80%.

Finite Element Analysis on Large-Scale Electrical Dust Precipitator Steel Structures

Based on the construction features of the steel structures of a type of electrical dust precipitator, a finite element model is established with large-scale finite element analysis software ANSYS, and the structure stress and displacement of the model under all sorts of loads are analyzed with the frontal solution method. The results indicate that analysis is relatively accurate, the finite element model and the analysis method is appropriate. The result can be further used for optimization design of the electrical precipitator steel structures.

A Potential Precipitating Apparatus and its Performance Measuring

A new apparatus which is the disc with the radiant fine stainless-steel filament is potential removal of dust apparatus by the analysis of dust removal. To evaluate its performance of dust removal, the experimental installation is built, the dust collection efficiency under dry and wet condition, the pressure drop, is measured in the experimental platform. It is also designed the wet dust precipitator and applied to the control of dust in mine tunnel. Results show that the disc is better dust collection efficiency under wet condition than under dry condition, the respirable dust collection efficiency is more than 80 percent averagely, and its pressure drop is also lower. Though these measures are initial, it is convincing that the disc can served as a part of precipitator by optimum design.

Analysis and Optimal Design on Electrical Dust Precipitator Steel Structures

By using the finite element analysis software ANSYS, this article presented the structure stress and displacement of a type of electrical dust precipitator on a variety of loads effect, after the main steel structures of the model was built according to the frontal solution method, optimization design of model's main steel structures had been done. The modeling and the computational Method has been proved the reasonableness of precision, and can be further used for structure analysis and so it has reference value for optimization design of other electrical precipitator steel structures.

Removal of Particulate Matter in a Tubular Wet Electrostatic Precipitator Using a Water Collection Electrode

As one of the effective control devices of air pollutants, the wet electrostatic precipitator (ESP) is an effective technique to eliminate acid mist and fine particles that are re-entrained in a collection electrode. However, its collection efficiency can deteriorate, as its operation is subject to water-induced corrosion of the collection electrode. To overcome this drawback, we modified the wet ESP system with the installation of a PVC dust precipitator wherein water is supplied as a replacement of the collection electrode. With this modification, we were able to construct a compact wet ESP with a small specific collection area (SCA, 0.83 m2/(m3/min)) that can acquire a high collection efficiency of fine particles (99.7%).

AN AIR-FILTER HOOD FOR THE CONTROL OF LEPIDOPTERAN SCALES

A hood incorporating a removable air filter and an electrostatic dust precipitator reduced the numbers of air-borne scales around laboratory workers handling insects, thereby reducing the occupational hazard of allergic reactions. The hood is mobile and easy to maintain. Construction details are provided.