A hybrid filter system has been developed as an air pollution control device that closely integrates electrostatic precipitation (ESP) and fabric filter technologies into a durable, cost-effective device that produces superior filtration results. Its design uses a synergy between these two technologies whereby the filter bags are able to operate at high air-to-cloth (A/C) ratios than conventional pulse jet fabric filters.
Electrostatic precipitators have been used in many industries; several examples are cement, steel, aluminum, copper, ceramic, tile, petrochemical and power plant. An electrostatic precipitator is a large, industrial emission-control unit. They can handle large gas volumes with a wide range of inlet temperatures, pressures, dust volumes, and acid gas conditions.
Fabric dust collectors are commonly known as bagfilters and Baghouses are the most efficient and cost effective dust collector models. Dust enters the fabric filter compartment. Larger particles drop out while smaller dust particles collect on filter Bags.
The primary function of a cyclone is to separate dust from a gas stream. After separation, the dust discharges out the bottom of the cyclone and air discharges through the top exhaust. Cyclones (or centrifugal collectors) create a ‘cyclonic’ or centrifugal force, similar to water going down a drain, to separate dust from the polluted air stream.
The conditioning tower is used to reduce the temperature and to increase the moisture level of the gas, before it is passed through the dedusting equipment. It is called a conditioning tower because it conditions the hot gas, thus making it more suitable for the dedusting equipment to extract dust from it.