Cement Kiln Exhaust Cleaning
A high-efficiency dry electrostatic precipitator (ESP) that removes particulate matter from cement kiln and clinker cooler exhaust. By charging dust particles and collecting them on plates, the ESP handles large gas volumes (37,000–353,000 m³/h) at temperatures up to 400°C with low pressure drop and long service life.
Product Overview
The electrostatic precipitator (ESP) is a heavy-duty, high-volume particulate control device widely used on cement kiln exhaust, clinker cooler exhaust, and other large gas streams. It removes dust by applying a high-voltage DC charge to discharge electrodes, which ionizes the gas and charges passing dust particles; the charged particles are then driven by the electric field toward collecting plates, where they adhere until mechanically removed by rapping.
ESPs are valued in cement plants for their ability to handle very large gas volumes (tens to hundreds of thousands of m³/h) at high temperatures (up to 400°C) with a low pressure drop and long, reliable service life. Unlike fabric filters, they have no bags to replace, making them economical for high-volume kiln and cooler applications where the dust loading is moderate and the target emission is 30–50 mg/Nm³.
LIMING Machinery manufactures dry ESPs with corrosion-resistant steel casings, robust discharge electrodes, rigid-frame collecting plates, and reliable electromagnetic or mechanical rapping systems. We supply genuine ESP electrodes and internal parts for the life of the equipment.
Key Benefits
Engineered for high-volume, high-temperature cement exhaust with low operating cost.
Handles exhaust gas up to 400°C without cooling — suitable for direct installation on hot kiln and cooler exhaust, eliminating the need for conditioning towers in some configurations.
Unlike fabric filters, the ESP offers an open gas path with minimal resistance, reducing induced-draft fan load and electrical consumption — a significant saving on large kiln exhaust volumes.
ESP internals (electrodes and collecting plates) last for years with only periodic rapping maintenance. No recurring bag-replacement cost — lowering lifetime operating expense versus a bag filter.
Modular field design scales from 37,000 to 353,000 m³/h. Multiple fields in series allow staged collection — first fields capture the bulk of dust, later fields polish to the target emission.
Technical Data
Select a model based on your exhaust gas volume and required emission target. LIMING can also customize the number of fields and plate height.
| Model | Air Volume (m³/h) | Fields | Plate Height (m) | Max Temp (°C) | Emission (mg/Nm³) |
|---|---|---|---|---|---|
| ESP-37 | 37,000 | 3 | 6 | 400 | ≤50 |
| ESP-60 | 60,000 | 3 | 7.5 | 400 | ≤50 |
| ESP-90 | 90,000 | 3 | 9 | 400 | ≤50 |
| ESP-120 | 120,000 | 4 | 10 | 400 | ≤50 |
| ESP-160 | 160,000 | 4 | 10 | 400 | ≤50 |
| ESP-200 | 200,000 | 4 | 12 | 400 | ≤50 |
| ESP-260 | 260,000 | 5 | 12 | 400 | ≤50 |
| ESP-300 | 300,000 | 5 | 14 | 400 | ≤50 |
| ESP-353 | 353,000 | 5 | 14 | 400 | ≤50 |
* Specifications are for reference only. Actual performance depends on gas properties, dust resistivity, and operating conditions. Contact LIMING for model selection.
How It Works
The electrostatic precipitator operates on the principle of electrostatic particle charging and collection. Dust-laden gas passes through a strong electric field established between discharge electrodes and collecting plates:
Frequently Asked Questions