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HOW TO PREVENT AIR POLLUTION IN PULP & PAPER INDUSTRY

MIST ELIMINATORS AND OTHER SOLUTIONS

The core business of pulp and paper industry is the production of pulp and paper/paperboard and all its related facilities (i.e. integrated or non-integrated mills).

Air pollution is an everyday challenge for pulp and paper industry, as several pollutants come out the production process.

Air pollutants are generated in different steps of the production process, including the pulping process, steam boilers operation, bleaching steps, and so on.

The most common pollutants generated by pulp and paper industry are: nitrogen oxides, sulfur compounds and particulate matter. VOC, fly ashes and dust are also part of the problem.

AWS CORPORATION, as a demister manufacturer, can help solve some of these air pollution problems in this specific industry.

Discover our solutions for Pulp & Paper applications:

TIDEVANESTM MIST ELIMINATORS

These lamellar demisters are made of zig-zag baffles that make the gas quickly change direction as it flows through the oriented baffles or blades. The liquid droplets, due to their momentum, impact on the baffles and are separated from the gas flow as they are unable to follow the gas streamlines.

TIDEVANETM lamellar filters collect essentially 100% of all liquid particles greater than 8 to 40 microns in diameter, depending on design parameters and operating conditions.

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Why are TIDEVANE demisters a great solution for Pulp & paper industry?

This type of equipment is used to purify the steam from black liquor particles in multi-stages evaporators.

Here below some examples of different demisters supplied to Pulp & Paper industries.

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HIGH-PRESSURE VESSEL WITH DEMISTERS

In the photos you can see the high-pressure vessels with demisters that are aimed at NCG removal from the cooled steam.

NCG (Non-Condensable Gases) are odorous compounds generated throughout the kraft pulping process, after gas cooling.

The high-pressure vessel helps eliminating these compounds in order to meet environmental requirements.

In a mill you can mainly find two different types of odorous compounds:

CNCG - Concentrated NCG when the mill generates small volume - high concentrated compounds.
DNCG - Diluted NCG when the mill generates high volumes – low concentrated compounds.
The AWS high-pressure vessel with demisters is a great solution to collect and eliminate the NCG compounds.

High-pressure vessel during construction.
As you can see from the photos, the lamellar demister is installed in the core of the vessel.

High-pressure vessel completed and ready for shipment!

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Choose AWS CORPORATION as your mist elimination manufacturer.
Don’t hesitate to contact us, we will be happy to suggest you the best solution for you!