Dust Collection


SMART™ ESP System                                     

                                   - The Most Effecient ESP System 

Our senior scientists and engineers have spent nearly 30 years in the research and development of electrostatic precipitation (ESP), starting from early 1980s. 

We have upgraded our ESP system, SMART™ ESP System, based on a new design approach incorporating the latest technological innovation in order to achieve high collection efficiency and cost effectiveness. 

Traditional ESP design uses empirical values of particle migration velocity or the value obtained simply by dividing the theoretical migration velocity by a factor of 2, based on particle mass mean diameter, totally disregarding the particles themselves. SMART™ ESP Systems employ a novel design approach focusing on particle size and size distribution and gas quality as well. 

SMART™ ESP Systems address the issue of how to utilize a single particle diameter to represent polydisperse particles in terms of theoretical migration velocity. This is a breakthrough in understanding deposition of all size of particles along a precipitator. 

A new concept of net particle migration velocity, according to the traditional effective migration velocity of particles, has been developed to describe the effect of gas flow quality or uniformity on particle deposition. We have also created a new flow scattering plate to reduce pressure drop and generate a better gas flow profile and consequently achieve higher collection efficiency. 

This innovation also involves the engineering consideration of the effect of particle size and size distribution on corona current, collecting electric field along the precipitator first time. This process can only be achieved after the average particle theoretical migration velocity is obtained as mentioned above. 

To challenge an increase on the electrical field in the vicinity of the collection plates and high resistivity particles, we have applied the latest pulse power generator. This technology has been shown to reduce averagely 30% of dust escaped compared with conventional ones. 

With SMART™ ESP Systems, the design accuracy of precipitators on each practical case can be improved, with a significant saving of up to 25% and the collection efficiency of up to 99.9%. 

This innovation also presents an ideal solution of diagnosing and upgrading old precipitators which have experienced poor performances of dust collection. 

For more information, please contact our Technology Division

EWSS™ Electrostatic Wet Scrubber System                                     

                                   - The Most Effective Wet Scrubber System 

Billinton Group's senior scientists and engineers have dedicated many years to the research and development of effective wet scrubbers. 

In Billinton's Electrostatic Wet Scrubber Systems (EWSS™), countless micro droplets and particles move continuously in relation to each other. As they approach several microns of distance, electrical attraction causes the particulate to be attracted to enter the droplets. This means that collector water droplets are delivered to the particulate in a way that has never been accomplished before. This function is critical in understanding the performance of EWSS™.  EWSS™ spraying system produces droplets with 40~100 µm in diameter by varying atomizing air pressures, liquid flow rates, and spraying nozzle diameters, producing a significant amount of charge on droplets at a voltage of about 1,000 volts. As droplets will have the same polar charges, they repel each other to achieve the smallest possible droplets. 

EWSS™ offers various performance advantages controlling submicron particulate. It requires less than 10 cm of pressure drop. By contrast, Venturi systems typically require 100cm to 160cm of pressure drop. This advantage is a major contributor to EWSS™'s low operating costs. The applied voltage for electrostatic precipitators is over 10 times greater than EWSS™ systems. 

Another distinguishing advantage of the EWSS™ is its ability to remove acid fumes and gases, such as SO2, Cl2 and NH3, and particulate (including submicron particulate) simultaneously. In practical terms, this presents management with the ability to eliminate the maintenance and labor costs associated with packed towers. 

EWSS™ can also work without the necessity of towers. This is particularly suitable for industries with limited space where larger amount of dust is produced, or for places of materials crushing, feed openings, belt conveyors.

 EWSS™ has been shown to be 99.9% efficient in the collection of all types of particulate from 0.1 to 100 microns, and 90%+ efficient in the removal of fumes and gases with merely tap water. As the droplets are highly charged with small sizes, the volume of liquid circulation is low. This results in a less energy consumption and a low operation cost. 

EWSS™ is quite suitable to for dealing with cases of gas volumes less than 20,000m3/h. For those ones of gas volumes larger than 20,000m3/h, please refer to our CFS™ FGD System. 

For more information, please contact our Technology Division.