| dc.description.abstract | The demand in energy consumption has grown significantly since the Industrial
Revolution. The major source for power generation has mainly based on coal, and will likely
to remain the domination in the foreseeable future because of its economical attractiveness.
However, the environmental impact of the product in flue gas has attracted more and more
attention. Power companies are starting to apply pollution-controlling subsystems in order to
reach environment requirements.
Regarding some research studying a different kind of granular bed filter, combined with
electrostatic enhancement to improve collection efficiency of fine particles, this research
considers a similar approach. By introducing a second-stage filter (Candle Filter) connecting
with the current granular bed filter, a compound filtration system is developed. The system is
aimed to improve the collection efficiency of PM2.5 particulates under various conditions, which
is considered as a shortage of granular bed filters.
By experiment approach, this research studies the filtration results of the compound system
under different parameters, such as experiment temperature, mass flow rate of the filter media,
etc. The mechanism by which the particulates be removed has also been discussed. The
experiment results show a 95.47% collection efficiency for a dust flow with a concentration of
12000 ppmw, lowering the mean diameter of the particulate from 53.52 μm to PM2.5. | en_US |