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Filtration in Chemical Processing

Filtration is critical in many processing steps. Filters are cost-effective for particle removal and clarification, filtering water used in the process, protecting liquid solutions in tanks and for protecting the final product's quality. See below for brief descriptions of how filters can help you, and follow the links for more detailed application information.

The schematic below shows some basic filtration steps in a chemical processing system. The filtration applications in areas from raw materials to container washing are briefly described below. You can find more about each in our application pages.

Common Filtration Steps in Chemical Processing

Particle Filtration and Clarification

Removing particles, whether visible or sub-micron sized, is a key step in protecting the quality of your entire process. Two places for targeting the removal of particles are at the introduction of raw ingredients, and after the mixer/reactor. Particle filtration and clarification are most often designed to prepare the solution for greater purification, which means that the particle filters are protecting more costly and critical downstream processes, including additional filtration. Though only one filter housing is shown in the schematic, multiple filters may be needed to remove particles or other contaminants and protect process efficiency and product quality.

Particulate or crystal removal can be performed by depth filter media or may require more complex membrane filters for sub-micron sized contaminants. See our application page for more information on what media might work for you.

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Final Filtration

The most critical filtration process in any chemical manufacturing operation is the filtration of final product. Whether to assure that the product is free from visible particles, or to prevent bacterial contamination of key solutions, filtration is the key to finished product quality.

Depth filters are used for visible particulate and sediment removal. Membrane filters are most often used to remove bacteria and smaller particulates. The filters chosen must, obviously, be compatible with the product, remove the target contaminants, and not adversely affect the final product. Click through to the application page for more information.


Water Filtration

Water treatment is a part of almost all chemical processes. The water quality required varies depending on the stage of the process and the intended use of the water – whether as part of the final product or for washing containers. No matter the quality required, reaching and maintaining that quality is more complex than simply installing a filter or even a reverse osmosis and deionization system.

Filters are used for a wide array of applications in water filtration. From removing chlorine and visible particles from municipal water to helping turn river water to ultrapure water, filters help your treatment system reliably deliver the quality of water you need. Visit our application page for more information on how filters may help you.

Tank Venting & Process Gases

Filling and emptying tanks of liquid also causes the air in the tank to have to either exit or enter it. Filters can block potential environmental contaminants from getting into the tank, meaning that anything from dust to bacteria can be kept away from your product and your processes and product quality can be protected.

Filtration of process gases can also protect product quality by removing particulates that may cause defects. Filters may be used in gas distribution or at the point-of-use to maintain high quality and insure against system upsets.

For both tank vent applications and gas filtration, using filter products made with either depth media or hydrophobic membranes can help assure cost effective operation and product purity. Look at our application page to find more information.

To estimate the number of filters you will need for your application, use our unique sizing tools.

Contact Critical Process Filtration to learn how we can evaluate your facility and recommend cost effective filtration that will safeguard chemical quality.