ESP Proposal for Treatment Exhaust from Textile Stenter Machine

We present this project about our Boton Air Electrostatic Precipitator ESP for treatment Exhaust gas generated by the stenter machine or Ram machine with high efficiency more than 95%. And our ESP also can collect textile auxiliary oil from the smoke during the purification process.

Stenter machine is the key equipment for textile dyeing and finishing process. The temperature is relatively high during the fabric heat setting process, so it will generate large amounts of high-temperature exhaust in stenter frame that contains lots of pollutants such as organic oil, dye, dyeing auxiliaries etc. Therefore, it will cause great air and odor pollution and being harmful to worker’s health as well as the people living near by factory. A filtration system to collect smoke from stenter lines is necessary.


We will take a textile factory for example will be as follow:


Factory condition:

CAPACITY: 20.000 m3/h


OVEN TEMP: 180-200℃


ELECTRICITY:  380 V/ 50 Hz



In General, the temperature inside the oven is about 180-200℃, and the temperature of the fumes that come from the duct to our ESP system is about 140-150℃. So before entering into our ESP filter, a heat exchanger device need to be installed for cooling the exhaust temperature down to about 40℃. Therefore, auxiliary devices such as cooling tower and water pump are also needed for heat exchanger working. Finally, the smoke will be filtered by the ESP host and oil will be collected.


Choosing the installation site

As shown in the above, the installation site is outside of the factory. If no space, it can be installed on the roof of the factory or on the top of the tenter machine.


Working Principle

The electrostatic filtering principle is to capture the smoke particles to make them charged by electrons emitted by the negative needle in high voltage electric field, and the anions generated by the electrons collisions with the air molecules each other, and then the smoke particles will stick to the positive cylinder and become oil.


Select A Suitable Electrostatic Precipitator model


  1. Heat exchanger model selection

Our company adopts the most cost savings water cooled heat exchanger. This design needs one cooling tower, an independent water pump for supporting water.

  -Heat Exchanger Parameters

According to the needed water calculation, we choose the model as follow:


Model HED 2.8
Body carbon steel plate
heat exchange tube plate carbon steel
Resistance(P a) 400
Cooling temperature(℃) 140→40
Water supply flow (m3/h) 150
Water supply temperature(℃) ≦33℃
Color Grey


  1. Industrial Electrostatic Precipitator Model Selection


According to the practical airflow is 20000m3/h, selecting a model of IESP 2.4 industrial electrostatic precipitator for better efficiency.


-Industrial Electrostatic Precipitator Parameter

-Electrostatic Host


Model IESP 2.4
Body carbon steel plate
Electrostatic filtering cell materials Stainless steel
Sizes (mm)(L*W*H) 3840*1975*1790
Resistance(P a) 400
Voltage 14KV
Current <60mA
Fire extinguishing system Automatic fire system
Efficiency Rate 95%
Color Grey


-Control Panel


Model IESP 2.4
Material Carbon steel plate
Power 380V 50Hz
Rated Power(KW) ≤6
Color Grey


  1. Auxiliary equipment selection

Our company can provide the parameters about auxiliary equipment including the fan, cooling tower and water pump. And the Buyer should be responsible for buy the auxiliary equipment.


Project Case