ESP - Electrostatic Precipitator

MDSJ AIR ENGINEERING’s ESP (Electrostatic Precipitator) is a device that utilizes electric charge to remove specific substances (solid particles or liquid droplets) from the air or other gases in chimneys. The precipitator operates by applying energy only to the collected particulate matter without significant resistance to the flow of gases. Electrostatic precipitators are generally designed for the recovery of valuable industrial process materials and are also used for the removal of harmful particulate matter from waste gases, particularly in industrial facilities and power generation stations, for air pollution control.

How ESP - Electrostatic Precipitator​ Works?

MDSJ AIR ENGINEERING’s electrostatic precipitators operate by electrostatically charging particles in the gas flow. The charged particles are attracted to plates or other collection electrodes and are deposited onto them. The purified air is then discharged from the precipitator through an outlet to the atmosphere. When sufficient particles have accumulated in the collection devices, they are shaken off by mechanical vibrators. The particles, which can be wet or dry, fall into a hopper beneath the unit, and a conveyor system retrieves them for disposal or recycling. Precipitators are commonly used in conjunction with denitrification units and scrubbers that remove nitrogen oxides or other devices that remove sulfur dioxide.


Regardless of the application, the MDSJ AIR ENGINEERING latest dry ESP design provides many benefits including:

MDSJ AIR Engineering ESP

Electrostatic precipitators are important filters in the process of cleaning high-temperature flue gases, particularly in reducing particulate pollution, including particles of approximately 1 micron in size, and some precipitators can remove particles as small as 0.1 microns in diameter. They are capable of handling large volumes of gas at various temperatures and flow rates by removing solid particles or liquid droplets. In terms of capacity, our production ranges from 10,000 m³/h to 1,000,000 m³/h.

Why MDSJ AIR Engineering ESP?

Electrostatic precipitator technologies ensure proven reliability, reduced operating and maintenance costs, and maximum particulate removal efficiency.

Designed projects, quality components, our spare parts, and after-sales services help existing ESPs operate efficiently and effectively.

At MDSJ AIR ENGINEERING, we have extensive experience in ESP technologies and installations in a wide range of applications, including energy generation, waste-to-energy, cement, chemical, oil, gas, pulp and paper, and metals/steel, among others.

Electrostatic Precipitator ESP Filter is always individually designed for each project and customized according to customer requirements.

ESP - Electrostatic Precipitator​ Desing Features

The design of an ESP precipitator consists of a series of fine vertical wires and a series of large flat vertical metal electrode plates. The plates are spaced apart, typically ranging from 2 cm to about 18 cm, depending on the application. The gas flow moves horizontally between the wires and along the arrangement of the plates. To remove impurities from the gas stream, a negative voltage of several thousand volts is applied between the wires and plates.

MDSJ AIR Engineering ESP Precipitators Operation Parameters

Some electrostatic precipitators are designed to work with specific temperature and humidity characteristics of gas flows. Dry electrostatic precipitators operate above the dew point of the gas flow to remove foreign matter such as smoke and dust. In contrast, wet electrostatic precipitators work with saturated airflow at 100% relative humidity. Wet precipitators are commonly used to remove liquid droplets, including oil, resin, tar, and sulfuric acid mist, from gas flows in industrial environments. They are applied in places where gases are moisture-laden, contain combustible particles, or have particles that can be adhesive.