Wet Electrostatic Precipitator (WESP) for Paper Mills

Product Overview

Our wet electrostatic precipitator for paper mills is a customized WESP system designed for pulp and paper production lines. It can be applied to alkali recovery boiler flue gas, power boiler exhaust, paper machine hood exhaust, white water exhaust, black liquor evaporation off-gas and related wet flue gas streams. The equipment is typically installed after cyclone separators, bag filters, spray towers, scrubbers or desulfurization systems to perform terminal deep purification of wet flue gas. It helps paper mills control fine alkali dust, PM2.5, acid mist, fiber mist, water droplets, aerosols and visible plume, supporting cleaner production and stricter particulate emission control.

The equipment adopts high-voltage electrostatic adsorption combined with wet flushing. Fine particles, mist droplets and aerosols are charged in the electric field, captured on the collecting electrode surface, and then washed away by circulating water. This wet cleaning method avoids mechanical rapping and reduces the risk of secondary dust emission, making it especially suitable for high-humidity, corrosive and sticky exhaust conditions commonly found in paper mill processes.

How It Works

• Gas ionization and particle charging: High-voltage DC power generates a strong electric field between the anode tubes and cathode wires, causing gas ionization and particle charging.

• Fine particle and mist collection: Charged alkali dust, PM2.5, acid mist, fiber mist, droplets and aerosols migrate to the collecting electrode and are captured on the electrode surface.

• Wet flushing cleaning: The flushing system forms a continuous water film to wash captured pollutants into the drain, preventing alkali salt accumulation, fiber adhesion and secondary dust.

• Deep polishing after pretreatment: When arranged after a bag filter, spray tower, scrubber or desulfurization system, the WESP further removes residual fine particles, mist droplets and aerosols from wet paper mill exhaust.

Key Features

• High removal efficiency for fine paper mill aerosols: effectively captures alkali dust, PM2.5, acid mist, fiber mist, droplets and aerosols from pulp and paper exhaust.

• No secondary dust emission: wet flushing replaces mechanical rapping, improving outlet cleanliness and operational stability.

• Strong adaptability to paper mill flue gas: suitable for alkali recovery boiler, power boiler, paper machine hood, white water exhaust and evaporation off-gas with high moisture and fluctuating working conditions.

• Stainless steel anode tube modules: anode modules, shell and internal components can be made from stainless steel or other corrosion-resistant materials according to flue gas properties.

• Flexible structural layout: available in vertical or horizontal type, with circular or square shell, and can be integrated with existing dust removal, desulfurization and waste gas treatment systems.

• Customized engineering supply: configured according to actual air volume, temperature, humidity, dust load and emission requirements.

Typical Applications

• Alkali recovery boiler flue gas polishing in pulp and paper mills

• Power boiler and biomass boiler exhaust treatment

• Paper machine hood and white water exhaust purification

• Black liquor evaporation and condensation off-gas treatment

• Deep purification after bag filter, spray tower, scrubber or desulfurization system

• Removal of alkali dust, PM2.5, acid mist, fiber mist, droplets and aerosols

• Visible plume reduction and exhaust polishing for paper mill environmental upgrading projects

Manufacturing & Customization

Wuxi Xinchangyuan Equipment Manufacturing Co., Ltd. manufactures stainless steel WESP modules and supporting components for industrial flue gas and exhaust treatment. The company’s capabilities include laser cutting, CNC shearing, CNC press brake forming, plate rolling, automatic welding and on-site assembly. Stainless steel anode tube modules, cathode systems, flushing systems and shell structures can be customized according to project air volume, installation space and process conditions, supporting both new paper mill lines and retrofit projects.

FAQ

Can the paper mill WESP be installed after an existing bag filter or desulfurization system?
Yes. It is commonly arranged after bag filters, spray towers, scrubbers or desulfurization systems to perform terminal deep purification of wet flue gas.

What pollutants can it remove?
It mainly removes fine alkali dust, PM2.5, acid mist, fiber mist, water droplets, aerosols and other condensable pollutants from wet paper mill exhaust.

What materials can be used?
Anode modules, shell and internal components can be made from stainless steel or other corrosion-resistant materials based on exhaust composition and customer requirements.

Is the equipment available in different structures?
Yes. It can be supplied in vertical or horizontal structure, with circular or square shell, and can be customized according to site conditions.

Tel：+86 13656199922

Phone：+86 13656199922

Email：wxxcysbzzyxgs@163.com

Address：35-3 Yanqiao Road, Yanqiao Street, Huishan District, Wuxi City, Jiangsu Province, China