Product Name: Electrostatic precipitator / ESP in cement plants
Dust Collecting Rate: ≥99.5
Weight: 4500 ~ 6900 kg
Equipment Resistance: ﹤ 400 Pa
Air Volume: 2460 ~ 11000 m3/h
Condition: Brand new
Electrostatic precipitators (ESP) are industrial gas cleaning devices that could remove dusts and harmful particles from exhaust gases.
With over 20 years of experience in manufacturing dust collectors, our ESP projects can be found in cement plants, grinding units, thermal power plants, mines, steel plants, brick plants, and other industrial facilities. Our professional team will always try our best to tailor the most suitable electrostatic precipitator solution for your business! Request a quote for our latest prices!
AGICO ESP Features
Electrostatic precipitators and pulse jet bag filters are the two most commonly used dust collecting equipment in cement plants. They are both efficient dust collectors each has its own pros and cons. Compared to pulse jet bag filters, electrostatic precipitators have the following features:
- Low energy consumption. Different from other types of dust collectors, the separation force of an electrostatic precipitator directly acts on the particles, rather than on the airflow as a whole, which makes the energy consumption of electrostatic precipitators very low, only 0.2 ~ 0.4kwh/1000m3.
- Weak resistance. The dust-laden air enters the electrostatic precipitator with a low flow rate, and it does not collide with other objects, so the gas resistance is very weak. The pressure loss of an ESP is generally around 200Pa, which is only 1 / 5 ~ 1 / 8 of that of a bag filter.
- High & stable dust collection efficiency. The dust collection efficiency of ESPs with 4 or more electric fields can reach 99.9%. Moreover, it does not decrease much after a long-time operation, which is very stable.
- Large gas processing capacity. With more and more large machines are used in cement plants, the requirements of flue gas treatment capacity in cement production are also increasing. And the ESP has the largest gas processing capacity among its peers.
- Wide application range. ESPs can process the flue gas with the maximum temperature not exceeding 400℃.
- Highly automated operation & stable performance. ESPs are highly automated machines, and they have few parts moving during the dust removal process, thus they can work steadily for a long time without much maintenance.
- Compared with other types of dust collectors, ESPs have larger sizes, occupy larger areas, and have higher prices.
- ESPs are very sensitive to the electrical resistivity of the processing dust. They prefer the resistivity of the dust to be within 104 ~ 1012ohm/cm, or their dust removal efficiency will drop drastically.
AGICO supplies a variety of models of ESP dust collectors. Our latest ESP design delivers high dust collecting efficiency and stable performance under long-term operation.
|Air Volume (m3/h)||2460~4100||3000~5000||3480~5800||4500~7500||5520~9200||6600~11000|
|Air Velocity (m/s)||0.6~0.8||0.6~0.8||0.6~1.0||0.6~1.0||0.6~1.0||0.6~1.0|
|Equipment Resistance (Pa)||﹤400||﹤400||﹤400||﹤400||﹤400||﹤400|
|Dust Collecting Rate (%)||≥99.5||≥99.5||≥99.5||≥99.5||≥99.5||≥99.5|
Application of ESP in Cement Plants
The cement production process emits a large quantity of dust-laden exhaust gases. If these gases are not properly treated, they will heavily pollute our atmosphere.
The main exhaust gas emission sources in a cement plant include the raw material crusher, the rotary kiln, the cyclone preheater tower, the cement mill, and the coal mill. Electrostatic precipitators are often adopted in these places to help control air pollution.
ESP Working Principle
The core part of an electrostatic precipitator consists of a row of thin vertical wires (cathode wires) and a stack of large flat vertical metal plates (anode plates).
The cathode wires are charged with high voltage DC electricity and form a high voltage electric field between the cathode wires and the grounded anode plates. When the dust-laden airflow passes through the electric field, the gas is ionized due to corona discharge at the cathode.
At this time, the negatively charged gas ions will move towards the positive plates under the action of the electric field force, and collide with the dust particles and negatively charge them in this process.
The charged dust particles also move to the anode under the action of the electric field force. When they reach the anode, they will release the electrons they carry and deposit on the anode plates, so the gas is cleaned and is discharged from the ESP.
When there are too many dust particles deposited on the dust collecting plates, the mechanical rappers in the dust collector will shake them off by rapping the dust collecting plates. The dust particles finally fall into the hopper and discharged out by conveying devices.